CN111441724B

CN111441724B - An eccentric vibration generating device for a drilling rig sonic power head

Info

Publication number: CN111441724B
Application number: CN202010391887.7A
Authority: CN
Inventors: 潘云雨; 高翔; 潘俊
Original assignee: Liyang Southeast Machinery Co ltd
Current assignee: Liyang Southeast Machinery Co ltd
Priority date: 2020-05-11
Filing date: 2020-05-11
Publication date: 2024-12-06
Anticipated expiration: 2040-05-11
Also published as: CN111441724A

Abstract

The invention discloses an eccentric vibration generating device for a sonic power head of a drilling rig, and belongs to the field of sonic drilling rigs. The eccentric vibration generating device of the invention comprises a main frame, a spindle rotating mechanism and a spindle vibration mechanism, the spindle of the sonic power head is connected to the spindle hydraulic motor by a spline structure transmission, the spindle is rotatably installed in the spindle box, the spindle box is suspended in the main frame through a vibration isolator, two groups of eccentric vibration mechanisms are symmetrically arranged in the spindle box, and the two groups of eccentric vibration mechanisms are respectively placed on the left and right sides of the spindle, and high-frequency vibration is generated by the two groups of eccentric vibration mechanisms in the spindle box, the spindle rotation motion and vibration do not affect each other, the vibration inertia is small, and the vibration of the non-spindle axial direction is small, so that the excitation generated by the spindle is more stable, the vibration transmission efficiency is higher, and the structure of the sonic power head is more reasonable and compact, it is easy to ensure the installation position accuracy of the two groups of eccentric vibrator shafts, it is convenient for assembly and manufacturing, and the service life of the sonic power head is improved.

Description

Eccentric vibration generating device of acoustic wave power head of drilling machine

Technical Field

The invention relates to a power head of a drilling machine, in particular to an eccentric vibration generating device of a sound wave power head of the drilling machine.

Background

In the construction processes of oil fields, mineral exploration, rock-soil exploration, soil sampling and the like, a drilling machine is a common mechanical device for drilling soil and rock-soil. The acoustic wave power head for the drilling machine can generate up-and-down vibration to act on the drilling tool in the drilling process, and has the advantages of high drilling speed, high working efficiency, high fidelity of rock and soil samples, good construction safety, less environmental pollution and the like compared with the drilling machine in the traditional rotary drilling mode. When the acoustic power head drills, resonance energy is transmitted to the bit face through the drill string, and the drill string rotating at a low speed distributes the energy equally to the bit face. Since the vibration frequency belongs to a low mechanical wave vibration range, human hearing can be caused, and thus, the vibration frequency is called an "acoustic wave power head".

At present, most of existing sonic power heads adopt eccentric vibration structures, such as an 'acoustic vibration head for a sampling drilling machine' disclosed in Chinese patent No. ZL201020181134.5, an 'hydraulic ultrahigh frequency vibration power head' disclosed in Chinese patent No. ZL201210161963.0, an 'acoustic vibration power head and a tractor drilling machine using the same' disclosed in Chinese patent No. ZL201320272471.9, and an 'vibration drilling machine' disclosed in Chinese patent application No. 201711336710.1, wherein the sonic power head structures all adopt eccentric shafts (eccentric vibrators) to rotate at high speed to form high frequency vibration, and two ends of each eccentric shaft are supported by bearings. The vibration mode of the single eccentric shaft is like a 'hydraulic drive non-contact type audio head' disclosed in Chinese patent number ZL201420298462.1, and the mode has the advantages of simple structure, poor vibration stability, strong transverse vibration and the like, so that the practical application is reduced. The synchronous relative rotary vibration of the double eccentric vibrating blocks has better vibration stability, but the requirements on the motion synchronism and the symmetry of the left and right eccentric vibrating blocks are very high, once the motion of the two eccentric vibrating blocks is inconsistent, the vibration efficiency and the vibration stability are reduced, and the set exciting force is difficult to reach.

The existing eccentric vibration type acoustic wave power head is poor in structural design rationality, and due to errors in assembly and machining precision, the stability of self vibration of the acoustic wave power head is poor, and the vibration transmission efficiency is low. In addition, the existing eccentric vibration type acoustic wave power head does not fully consider the possible angle deflection of the main shaft in the actual working process, can not realize the adaptive deflection adjustment and correction of the main shaft, is also easy to influence the vibration stability of the acoustic wave power head, so that the damage of the power head is caused, and the service life of the power head is reduced.

Disclosure of Invention

1. Technical problem to be solved by the invention

The invention aims to overcome the defects of poor vibration stability, low vibration transmission efficiency and the like of a main shaft vibration generating device of the traditional eccentric vibration type acoustic wave power head, and provides the eccentric vibration generating device of the acoustic wave power head of a drilling machine, by adopting the technical scheme of the invention, the main shaft of the acoustic wave power head is in transmission connection with a main shaft hydraulic motor by adopting a spline structure, the main shaft is driven to rotate by the main shaft hydraulic motor, the main shaft is rotationally arranged in a main shaft box, the main shaft box is suspended in the main frame through the vibration isolator, the two groups of eccentric vibrating mechanisms are symmetrically arranged in the main shaft box, the two groups of eccentric vibrating mechanisms are respectively arranged at the left side and the right side of the main shaft, high-frequency vibration is generated by utilizing the two groups of eccentric vibrating mechanisms in the main shaft box, the vibration generated by the main shaft is less in the axial direction of the non-main shaft, the vibration excitation generated by the main shaft is more stable, the vibration transmission efficiency is higher, the structure of the sound wave power head is more reasonable and compact, the assembly and the manufacture are convenient, and the service life is long.

2. Technical proposal

In order to achieve the above purpose, the technical scheme provided by the invention is as follows:

The invention relates to an eccentric vibration generating device of a sound wave power head of a drilling machine, which comprises a main frame, a main shaft rotating mechanism and a main shaft vibrating mechanism, wherein:

the main shaft rotating mechanism comprises a main shaft hydraulic motor and a main shaft, the main shaft hydraulic motor is arranged at the upper part of the main frame, and an output shaft of the main shaft hydraulic motor is in transmission connection with the main shaft through a spline structure and is used for driving the main shaft to rotate and allowing the main shaft to move up and down;

The main shaft vibration mechanism comprises a main shaft box, a vibration isolator and two groups of eccentric vibration mechanisms which are symmetrically arranged, the main shaft box is mounted in the main frame in a suspending mode through the vibration isolator, a main shaft hole is formed in the center of the main shaft box, the main shaft is rotatably mounted in the main shaft hole through a main shaft bearing, the two groups of eccentric vibration mechanisms are symmetrically arranged in the main shaft box, the two groups of eccentric vibration mechanisms are respectively arranged on the left side and the right side of the main shaft, each group of eccentric vibration mechanism comprises an eccentric vibrator shaft and a vibration hydraulic motor, the eccentric vibrator shaft is mounted in an eccentric shaft cavity on the corresponding side of the main shaft box through a vibrator shaft bearing, the vibration hydraulic motor is mounted on one side of the main shaft box, an output shaft of the vibration hydraulic motor is in transmission connection with one end of the corresponding eccentric vibrator shaft, and the eccentric vibrator shafts of the two groups of eccentric vibration mechanisms are symmetrically arranged and rotationally synchronous and are opposite in rotation direction.

Still further, main shaft hydraulic motor pass through main shaft and rectify the mechanism and install in the upper portion of main frame, main shaft rectify the mechanism and include outer rocker and interior rocker, the both sides of outer rocker pass through outer pivot rotation and install on the bearing frame of rectifying on main frame upper portion, the both sides of interior rocker pass through the interior rotation of interior pivot and install in the inside of outer rocker, and leave the swing clearance between interior rocker and the outer rocker, main shaft hydraulic motor install on interior rocker, and the axis of rotation of outer rocker is mutually perpendicular with the axis of rotation of interior rocker.

Furthermore, a gasket is sleeved on the inner rotating shaft, the gasket is positioned between the outer swinging frame and the inner swinging frame, a swinging gap is formed between the outer swinging frame and the inner swinging frame, and a shaft sleeve is further arranged between the outer rotating shaft and the deviation correcting bearing seat and between the inner rotating shaft and the outer swinging frame.

Still further, spline structure include integral key shaft and integral key shaft sleeve, the upper end of integral key shaft be connected with the output shaft of main shaft hydraulic motor through the shaft coupling, integral key shaft sleeve fixed mounting in the axle cavity of main shaft upper end, integral key shaft and integral key shaft sleeve pass through spline transmission and be connected, the integral key shaft outside between interior swing frame and the headstock still overlap and be equipped with the protection casing, the shaft coupling pass through the shaft coupling bearing and rotate and install in the central shaft hole of interior swing frame.

The lower end of the main shaft is also provided with a main shaft flange, the upper part of the main shaft hole of the main shaft box is also provided with an upper bearing cover, an elastic sealing ring is also arranged between the upper bearing cover and the outer wall of the main shaft, the lower part of the main shaft hole of the main shaft box is also provided with a lower end cover, the rear part of the main shaft flange is sleeved at the lower end of the main shaft, the lower bearing of the main shaft is positioned by utilizing the rear end face of the main shaft flange, and an elastic sealing ring is also arranged between the lower end cover and the outer wall of the main shaft flange.

Still further, two sets of eccentric vibrating mechanism's eccentric vibrator axle one end of keeping away from vibration hydraulic motor stretches out the headstock, and is connected through synchronous mechanism between two sets of eccentric vibrating mechanism's the eccentric vibrator axle, synchronous mechanism include first synchronous pulley, second synchronous pulley, switching-over band pulley, tensioning band pulley and hold-in range, first synchronous pulley install in the end that stretches out of a set of eccentric vibrator axle, second synchronous pulley install in the end that stretches out of another set of eccentric vibrator axle, switching-over band pulley and tensioning band pulley install on the headstock, the hold-in range be two-sided tooth hold-in range, the hold-in range winds in proper order between first synchronous pulley, switching-over band pulley, tensioning band pulley and second synchronous pulley.

Still further still have the intermediate pulley in the synchro mechanism, the intermediate pulley pass through intermediate pulley shaft rotation and install on the headstock, and still be equipped with the rotational speed sensor that is used for detecting eccentric vibrator axle rotational speed between intermediate pulley shaft and headstock, intermediate pulley and hold-in range mesh.

Furthermore, each group of eccentric vibrating mechanisms is provided with two eccentric vibrator shafts which are coaxially connected, the two coaxial eccentric vibrator shafts are axially connected through an opposite key, the eccentric blocks of the two eccentric vibrator shafts have the same phase, and two ends of the two eccentric vibrator shafts of the same group of eccentric vibrating mechanisms are arranged in corresponding side eccentric shaft cavities of the main shaft box through vibrator shaft bearings.

Further, the vibration isolator is a columnar rubber block, the columnar rubber block has a cross-sectional shape with a transverse dimension larger than a longitudinal dimension, and the longitudinal direction of the columnar rubber block is consistent with the vibration direction of the main shaft.

Further, the upper part and the lower part of the main frame are respectively provided with an upper buffer block and a lower buffer block corresponding to the upper end and the lower end of the main shaft box.

3. Advantageous effects

Compared with the prior art, the technical scheme provided by the invention has the following remarkable effects:

(1) The invention relates to an eccentric vibration generating device of a sound wave power head of a drilling machine, which comprises a main frame, a main shaft rotating mechanism and a main shaft vibrating mechanism, wherein a main shaft of the sound wave power head is in transmission connection with a main shaft hydraulic motor through a spline structure, the main shaft hydraulic motor drives the main shaft to rotate, the main shaft is rotationally arranged in a main shaft box, the main shaft box is suspended in the main frame through a vibration isolator, two groups of eccentric vibrating mechanisms are symmetrically arranged in the main shaft box and are respectively arranged at the left side and the right side of the main shaft, the two groups of eccentric vibrating mechanisms in the main shaft box are utilized to generate high-frequency vibration, the rotating motion and the vibration of the main shaft are not influenced mutually, parts of the eccentric vibrating mechanisms for driving the vibration are few, the vibration inertia is small, the vibration in the axial direction of the non-main shaft is small, so that the excitation generated by the main shaft is more stable, the vibration transmission efficiency is higher, the structure of the sound wave power head is more reasonable and compact, the installation position precision of the two groups of the eccentric vibrator shafts is easy to ensure, the assembly and the service life of the sound wave power head is prolonged;

(2) According to the eccentric vibration generating device of the acoustic power head of the drilling machine, the main shaft hydraulic motor is arranged at the upper part of the main frame through the main shaft deviation correcting mechanism, the main shaft deviation correcting mechanism comprises the outer swing frame and the inner swing frame, and the main shaft hydraulic motor is arranged on the inner swing frame, so that the main shaft can swing at a certain angle within the range of the main shaft deviation correcting mechanism, the adaptability of the actual operation of the acoustic power head is improved, the main shaft deviation correcting mechanism has a better supporting effect on the swing of the main shaft box, the deviation correcting and the correcting of the main shaft box are facilitated, and the working stability and the flexibility of the acoustic power head are further improved;

(3) The invention relates to an eccentric vibration generating device of a sound wave power head of a drilling machine, wherein a gasket is sleeved on an inner rotating shaft, and is positioned between an outer swinging frame and an inner swinging frame, and a swinging gap is formed between the outer swinging frame and the inner swinging frame;

(4) The spline structure of the eccentric vibration generating device of the acoustic power head of the drilling machine comprises a spline shaft and a spline shaft sleeve, wherein the upper end of the spline shaft is connected with an output shaft of a main shaft hydraulic motor through a coupling, the spline shaft sleeve is fixedly arranged in a shaft cavity at the upper end of the main shaft, and the spline shaft is connected with the spline shaft sleeve through spline transmission; meanwhile, the processing and manufacturing of parts are convenient, and the assembly is convenient and the precision is high;

(5) The invention relates to an eccentric vibration generating device of a sound wave power head of a drilling machine, wherein the upper end of a main shaft is supported in a main shaft hole of a main shaft box through a main shaft upper bearing, the lower end of the main shaft is supported in the main shaft hole of the main shaft box through two groups of main shaft lower bearings, and the two groups of main shaft lower bearings are positioned through shaft shoulders in the main shaft hole;

(6) According to the eccentric vibration generating device of the sound wave power head of the drilling machine, one ends of the eccentric vibrator shafts of the two groups of eccentric vibration mechanisms far away from the vibration hydraulic motor extend out of the spindle box, the eccentric vibrator shafts of the two groups of eccentric vibration mechanisms are connected through the synchronous mechanism, the synchronous mechanism adopts the synchronous belt mechanism, the rotation directions of the two groups of eccentric vibration mechanisms are opposite, the rotation speed and the vibration frequency are consistent through the synchronous belt, the vibration frequency deviation caused by the inconsistent rotation speed of the vibration hydraulic motor is further reduced, and the resonance stability and the reliability of the two groups of eccentric vibration mechanisms are improved;

(7) The invention relates to an eccentric vibration generating device of an acoustic wave power head of a drilling machine, wherein a synchronous mechanism of the device is also provided with a middle belt pulley, the middle belt pulley is rotatably arranged on a main shaft box through a middle belt pulley shaft, a rotating speed sensor for detecting the rotating speed of an eccentric vibrator shaft is also arranged between the middle belt pulley shaft and the main shaft box, the rotating speed sensor can be used for detecting the rotating speed of the eccentric vibration mechanism of the acoustic wave power head, visual data support is provided for the control of the drilling machine, and the control of the acoustic wave drilling machine is further facilitated;

(8) According to the eccentric vibration generating device of the acoustic wave power head of the drilling machine, each group of eccentric vibration mechanisms is provided with two eccentric vibrator shafts which are coaxially connected, and the two eccentric vibrator shafts are axially connected through the opposite key, so that the manufacturing and assembly of the eccentric vibrator shafts are simple and convenient, the phase consistency of eccentric blocks of the two eccentric vibrator shafts can be ensured, the assembly precision of the eccentric vibration mechanisms is ensured, and the resonance stability of the acoustic wave power head is improved;

(9) According to the eccentric vibration generating device of the acoustic power head of the drilling machine, the vibration isolator is the columnar rubber block, the columnar rubber block has a cross section shape with the transverse dimension being larger than the longitudinal dimension, the longitudinal direction of the columnar rubber block is consistent with the vibration direction of the main shaft, and the vibration isolator with the structure has good elastic deformation performance in the vibration direction of the acoustic power head and also has strong supporting performance in the transverse direction, so that larger transverse displacement change is effectively prevented when the main shaft box vibrates, the vibration stability of the acoustic power head is improved, the transmission of the vibration of the main shaft box to the main frame is effectively prevented, and the vibration energy loss is reduced;

(10) According to the eccentric vibration generating device for the sound wave power head of the drilling machine, the upper part and the lower part of the main frame are respectively provided with the upper buffer block and the lower buffer block corresponding to the upper end and the lower end of the main shaft box, the buffer blocks are utilized to effectively prevent the main shaft box from being impacted on the main frame due to overlarge up-down movement amplitude, and the use stability and the safety of the sound wave power head are improved.

Drawings

FIG. 1 is a front view of a sonic power head of a drilling machine in accordance with the present invention;

FIG. 2 is a top view of a sonic power head of a drilling machine in accordance with the present invention;

FIG. 3 is a left side view of a sonic power head of a drilling machine in accordance with the present invention;

FIG. 4 is a schematic cross-sectional view of the structure of FIG. 2 in the direction A-A;

FIG. 5 is a schematic view of the cross-sectional structure in the direction B-B in FIG. 1;

FIG. 6 is a schematic cross-sectional view of the structure of FIG. 4 in the direction C-C;

FIG. 7 is a schematic cross-sectional view of the structure of FIG. 4 in the direction D-D;

FIG. 8 is a schematic cross-sectional view of the steps in the direction E-E of FIG. 4;

FIG. 9 is a schematic view of the structure of the S direction in FIG. 8;

FIG. 10 is a schematic view of the rotational cross-section in the direction F-F of FIG. 9;

FIG. 11 is a schematic cross-sectional view of the G-G direction of FIG. 9;

FIG. 12 is a schematic cross-sectional view of the H-H direction of FIG. 1;

Fig. 13 is a schematic diagram of a bearing cooling and lubrication system in a sonic power head of a drilling machine according to the present invention.

Reference numerals in the schematic drawings illustrate:

1. 1-1 parts of main frame, 1-2 parts of connecting arm, 1-3 parts of supporting seat, 1-4 parts of upper buffer block, 1-4 parts of lower buffer block, 1-5 parts of side cover plate, 1-6 parts of deviation correcting bearing seat;

2. 2-1 parts of a main shaft rotating mechanism, 2-2 parts of a main shaft hydraulic motor, 2-3 parts of a motor support, 2-4 parts of a coupling, 2-5 parts of a coupling bearing, 2-6 parts of a spline shaft, 2-7 parts of a spline shaft sleeve, 2-8 parts of a main shaft, a protective cover, 2-9 parts of a main shaft upper bearing, 2-10 parts of an upper bearing cover, 2-11 parts of a main shaft lower bearing, 2-12 parts of a lower end cover;

3. the device comprises a main shaft deviation correcting mechanism, a 3-1 outer swing frame, a 3-2 inner swing frame, a 3-3 outer rotating shaft, a 3-4 inner rotating shaft, a 3-5 gasket, a 3-6 shaft sleeve and a main shaft deviation correcting mechanism;

4. The device comprises a main shaft vibration mechanism, 4-1, a main shaft box, 4-1-1, a vibration isolator mounting seat, 4-2, a vibration isolator, 4-3, an eccentric shaft cavity, 4-4, an eccentric vibrator shaft, 4-5, a vibrator shaft bearing, 4-6, a double-insert key, 4-7, an oil spraying ring, 4-8, a rear bearing seat, 4-9, a front bearing seat, 4-10, a vibration hydraulic motor, 4-11, a first synchronous pulley, 4-12, a second synchronous pulley, 4-13, a middle pulley, 4-14, a reversing pulley, 4-15, a tensioning pulley, 4-16, a middle pulley shaft, 4-17, a rotating speed sensor, 4-18, a tensioning adjustment seat, 4-19, a synchronous belt, 4-20, a center bolt, 4-21, a fastening bolt, 4-22, a pulley mounting seat, 4-23, an oil duct, 4-24 and an oil nozzle;

5. a spindle flange; 6, installing a bracket, and 6-1, deflecting an oil cylinder;

7. The bearing cooling and lubricating system comprises, by weight, 7-1 parts of a bearing cooling and lubricating system, 7-2 parts of an oil inlet pipe, 7-3 parts of an oil return pipe, 7-3 parts of a first pressure switch sensor, 7-4 parts of a second pressure switch sensor, 7-5 parts of a main controller, 7-6 parts of a combined valve block, 7-7 parts of an oil suction pump, 7-8 parts of a high-pressure filter, 7-9 parts of an oil return filter, 7-10 parts of a cooling and oil supply pump, 7-11 parts of a second flow dividing valve, 7-12 parts of a first flow dividing valve, 7-13 parts of a supporting leg multi-way reversing valve, 7-14 parts of a hydraulic variable pump, 7-15 parts of a hydraulic and electric load sensitive proportional valve group and 8 parts of a synchronous mechanism.

Detailed Description

For a further understanding of the present invention, the present invention will be described in detail with reference to the drawings and examples.

Examples

Referring to fig. 1 to 5, an eccentric vibration generating device for a sonic power head of a drilling machine according to this embodiment includes a main frame 1, a main shaft rotating mechanism 2 and a main shaft vibrating mechanism 4, wherein the main frame 1 is used as a supporting member of the whole sonic power head for mounting the main shaft rotating mechanism 2 and the main shaft vibrating mechanism 4, the main shaft rotating mechanism 2 includes a main shaft hydraulic motor 2-1 and a main shaft 2-7, the main shaft hydraulic motor 2-1 is mounted on an upper portion of the main frame 1, and an output shaft of the main shaft hydraulic motor 2-1 is in transmission connection with the main shaft 2-7 by adopting a spline structure for driving the main shaft 2-7 to rotate and allowing the main shaft 2-7 to move up and down axially; the main shaft vibration mechanism 4 comprises a main shaft box 4-1, a vibration isolator 4-2 and two groups of eccentric vibration mechanisms which are symmetrically arranged, wherein the main shaft box 4-1 is arranged in the main frame 1 in a suspending way through the vibration isolator 4-2, a main shaft hole is arranged at the center of the main shaft box 4-1, the main shaft 2-7 is rotatably arranged in the main shaft hole through a main shaft bearing, the two groups of eccentric vibration mechanisms are symmetrically arranged in the main shaft box 4-1, the two groups of eccentric vibration mechanisms are respectively arranged at the left side and the right side of the main shaft 2-7, each group of eccentric vibration mechanism comprises an eccentric vibrator shaft 4-4 and a vibration hydraulic motor 4-10, the eccentric vibrator shaft 4-4 is arranged in an eccentric shaft cavity 4-3 at the corresponding side of the main shaft box 4-1 through a vibrator shaft bearing 4-5, the vibration hydraulic motor 4-10 is arranged at one side of the main shaft box 4-1, and an output shaft of the vibration hydraulic motor 4-10 is in transmission connection with one end of the corresponding eccentric vibrator shaft 4-4, the eccentric vibrator shafts 4-4 of the two groups of eccentric vibrating mechanisms are symmetrically arranged, and have synchronous rotation and opposite rotation directions. When the acoustic power head works, the main shaft hydraulic motor 2-1 drives the main shaft 2-7 to rotate through the spline structure, meanwhile, the vibration hydraulic motor 4-10 drives the two groups of eccentric vibrator shafts 4-4 to synchronously rotate to generate eccentric resonance in the vertical direction, so that the main shaft 2-7 can generate vertical high-frequency vibration while rotating, the vibration frequency is determined by the rotating speed of the vibration hydraulic motor 4-10, and the higher the rotating speed of the vibration hydraulic motor 4-10 is, the higher the vibration frequency of the acoustic power head is. In the structure, the main shaft 2-7 is in transmission connection with the main shaft hydraulic motor 2-1 by adopting a spline structure, the main shaft 2-7 is driven to rotate by the main shaft hydraulic motor 2-1, meanwhile, the main shaft 2-7 is rotatably arranged in the main shaft box 4-1, the main shaft box 4-1 is arranged in the main frame 1 in a suspended manner through the vibration isolator 4-2, two groups of eccentric vibrating mechanisms are symmetrically arranged in the main shaft box 4-1, the two groups of eccentric vibrating mechanisms are respectively arranged at the left side and the right side of the main shaft 2-7, the two groups of eccentric vibrating mechanisms in the main shaft box 4-1 are utilized to generate high-frequency vibration, the rotary motion and vibration of the main shaft 2-7 are not mutually influenced, the eccentric vibrating mechanisms drive fewer vibrating parts, the vibration inertia is small, the vibration in the axial direction of a non-main shaft is small, the vibration generated by the main shaft 2-7 is more stable, the vibration transmission efficiency is higher, the structure of the sound wave power head is more reasonable and compact, the mounting position precision of the two groups of the eccentric vibrating shafts 4-4 is easy to ensure, the assembly and the service life of the sound wave power head is prolonged.

Because the acoustic power head is in operation, the main shaft 2-7 is connected with other drilling tools for drilling, the linearity of drilling is difficult to ensure in the practical construction process, and the main shaft box 4-1 is suspended and mounted on the main frame 1 through the vibration isolator 4-2, so that the main shaft box 4-1 is allowed to swing at an angle in a certain range, and in order to adapt to proper swing of the main shaft 2-7 and inhibit the swing amplitude, a main shaft deviation correcting mechanism 3 is further arranged in the embodiment. As shown in fig. 4 and 7, the spindle hydraulic motor 2-1 is mounted on the upper portion of the main frame 1 through the spindle deviation rectifying mechanism 3, the spindle deviation rectifying mechanism 3 comprises an outer swinging frame 3-1 and an inner swinging frame 3-2, two sides of the outer swinging frame 3-1 are rotatably mounted on deviation rectifying bearing seats 1-6 on the upper portion of the main frame 1 through outer rotating shafts 3-3, two sides of the inner swinging frame 3-2 are rotatably mounted inside the outer swinging frame 3-1 through inner rotating shafts 3-4, a swinging gap is reserved between the inner swinging frame 3-2 and the outer swinging frame 3-1, the spindle hydraulic motor 2-1 is mounted on the inner swinging frame 3-2 through a motor support 2-2, and the rotating axis of the outer swinging frame 3-1 is perpendicular to the rotating axis of the inner swinging frame 3-2, so that the spindle 2-7 can swing at a certain angle in the range of the spindle deviation rectifying mechanism 3, the adaptability of the actual running of the sonic power head is improved, the spindle deviation rectifying mechanism 3 has a better supporting effect on the swinging of the spindle box 4-1, the spindle box is facilitated, and the stability of the sonic power head is further improved. Further, the gasket 3-5 is sleeved on the inner rotating shaft 3-4, the gasket 3-5 is positioned between the outer swinging frame 3-1 and the inner swinging frame 3-2, a swinging gap is formed between the outer swinging frame 3-1 and the inner swinging frame 3-2, and the shaft sleeve 3-6 is further arranged between the outer rotating shaft 3-3 and the deviation correcting bearing seat 1-6 and between the inner rotating shaft 3-4 and the outer swinging frame 3-1.

In this embodiment, as shown in fig. 4, the spline structure includes a spline shaft 2-5 and a spline shaft sleeve 2-6, the upper end of the spline shaft 2-5 is connected with the output shaft of the spindle hydraulic motor 2-1 through a coupling 2-3, the spline shaft sleeve 2-6 is fixedly mounted in a shaft cavity at the upper end of the spindle 2-7, the spline shaft 2-5 is connected with the spline shaft sleeve 2-6 through spline transmission, a protecting cover 2-8 is further sleeved on the outer side of the spline shaft 2-5 between the inner swing frame 3-2 and the spindle box 4-1, and the coupling 2-3 is rotatably mounted in a central shaft hole of the inner swing frame 3-2 through a coupling bearing 2-4. By adopting the spline structure, the spindle hydraulic motor 2-1 is convenient for transmitting the rotation torque to the spindle 2-7, the spindle 2-7 can flexibly and axially vibrate relative to the spindle hydraulic motor 2-1, the vibration of the spindle hydraulic motor 2-1 is reduced, the follow-up weight of the whole spindle vibration mechanism is smaller, the high-frequency vibration stability is improved, meanwhile, the processing and the manufacturing of parts are convenient, and the assembly convenience and the precision are high. In order to facilitate the installation of the spindle 2-7, the upper end of the spindle 2-7 is supported in the spindle shaft hole of the spindle box 4-1 through the spindle upper bearing 2-9, the lower end of the spindle 2-7 is supported in the spindle shaft hole of the spindle box 4-1 through two groups of spindle lower bearings 2-11, the two groups of spindle lower bearings 2-11 are positioned through the shaft shoulders in the spindle shaft hole, the lower end of the spindle 2-7 is also provided with the spindle flange 5, the upper part of the spindle shaft hole of the spindle box 4-1 is also provided with the upper bearing cover 2-10, an elastic sealing ring is further arranged between the upper bearing cover 2-10 and the outer wall of the spindle 2-7, the lower part of the spindle shaft hole of the spindle box 4-1 is also provided with the lower end cover 2-12, the rear part of the spindle flange 5 is sleeved at the lower end of the spindle 2-7, the rear end face of the spindle lower bearing 2-11 is positioned by utilizing the rear end face of the spindle flange 5, and the spindle 2-7 is also provided with the elastic sealing ring between the lower end cover 2-12 and the outer wall of the spindle flange 5.

As shown in fig. 5, 8 and 9, in order to ensure the motion synchronism of the two sets of eccentric vibration mechanisms of the acoustic wave power head, in this embodiment, the eccentric vibrator shafts 4-4 of the two sets of eccentric vibration mechanisms extend out of the headstock 4-1 at the end away from the vibration hydraulic motor 4-10, and the eccentric vibrator shafts 4-4 of the two sets of eccentric vibration mechanisms are connected by the synchronization mechanism 8. The synchronous mechanism 8 comprises a first synchronous pulley 4-11, a second synchronous pulley 4-12, a reversing pulley 4-14, a tensioning pulley 4-15 and a synchronous belt 4-19, wherein the first synchronous pulley 4-11 is arranged at the extending end of one group of eccentric vibrator shafts 4-4, the second synchronous pulley 4-12 is arranged at the extending end of the other group of eccentric vibrator shafts 4-4, the reversing pulley 4-14 and the tensioning pulley 4-15 are arranged on a main shaft box 4-1, the synchronous belt 4-19 is a double-sided tooth synchronous belt, and the synchronous belt 4-19 is sequentially wound between the first synchronous pulley 4-11, the reversing pulley 4-14, the tensioning pulley 4-15 and the second synchronous pulley 4-12 (the winding direction of the synchronous belt 4-19 is shown in figure 9). After the synchronous belt 4-19 is changed in direction through the reversing belt pulley 4-14, the first synchronous belt pulley 4-11 and the second synchronous belt pulley 4-12 can synchronously rotate reversely, and the tensioning belt pulley 4-15 is used for tensioning the synchronous belt 4-19 to prevent the synchronous belt 4-19 from jumping. By adopting the synchronous mechanism 8, the synchronous belt is utilized to realize the opposite rotation directions, the consistence of the rotation speed and the vibration frequency of the two groups of eccentric vibration mechanisms, the vibration frequency deviation generated by the inconformity of the rotation speed of the vibration hydraulic motor is further reduced, and the resonance stability and the reliability of the two groups of eccentric vibration mechanisms are improved. In addition, the synchronizing mechanism 8 is also provided with a middle belt pulley 4-13, the middle belt pulley 4-13 is rotatably arranged on the main shaft box 4-1 through a middle belt pulley shaft 4-16, a rotating speed sensor 4-17 for detecting the rotating speed of the eccentric vibrator shaft 4-4 is also arranged between the middle belt pulley shaft 4-16 and the main shaft box 4-1, and the middle belt pulley 4-13 is meshed with the synchronizing belt 4-19. the middle belt pulley 4-13 is fixedly connected with the middle belt pulley shaft 4-16, the middle belt pulley shaft 4-16 is rotatably arranged on the spindle box 4-1 through a bearing, the rotation speed of the middle belt pulley 4-13 is detected through a rotation speed sensor 4-17, the rotation speed is the rotation speed of an eccentric vibration mechanism of the acoustic wave power head, visual data support is provided for control of a drilling machine, and further control of the acoustic wave drilling machine is facilitated. In order to intuitively reflect the rotational speed of the eccentric vibration mechanism, it is preferable that the diameters of the first timing pulley 4-11, the second timing pulley 4-12, and the intermediate pulley 4-13 are the same. In this embodiment, as shown in fig. 9 and 10, two tensioning pulleys 4-15 are arranged on the tensioning adjustment seat 4-18, the tensioning adjustment seat 4-18 is rotatably mounted on the spindle box 4-1 through a central bolt 4-20, a circular arc-shaped adjustment groove taking the axis of the central bolt 4-20 as the center of a circle is arranged on the tensioning adjustment seat 4-18, a fastening bolt 4-21 connected to the spindle box 4-1 is arranged in the circular arc-shaped adjustment groove, a synchronous belt 4-19 passes between the two tensioning pulleys 4-15, the tensioning adjustment seat 4-18 can rotate around the central bolt 4-20, so that the two tensioning pulleys 4-15 are driven to swing to tension the synchronous belt 4-19, the tensioning adjustment seat 4-18 is locked by the fastening bolt 4-21, the tensioning adjustment is convenient, the synchronous belt 4-19 is not easy to shake after being tensioned between the two tensioning pulleys 4-15, and the operation is more stable and reliable. Referring to fig. 11, the tensioning belt pulley 4-15 and the reversing belt pulley 4-14 are mounted on corresponding wheel shafts through bearings, the wheel shaft of the tensioning belt pulley 4-15 is fixed on the tensioning adjustment seat 4-18, and the wheel shaft of the reversing belt pulley 4-14 is fixed on the belt pulley mounting seat 4-22, so that the mounting is simpler and more convenient.

In this embodiment, the vibration isolator 4-2 is a columnar rubber block, the columnar rubber block has a cross-sectional shape with a transverse dimension larger than a longitudinal dimension, and the longitudinal direction of the columnar rubber block is consistent with the vibration direction of the spindle 2-7, as shown in fig. 6, the cross-sectional shape of the vibration isolator 4-2 can be elliptical or rectangular with two ends being semicircular, and the like, and has a cross-sectional shape with a transverse dimension larger than the longitudinal dimension, and the vibration isolator 4-2 adopting the structure has better elastic deformation performance in the vibration direction of the sound wave power head, has stronger supporting performance in the transverse direction, effectively prevents larger transverse displacement change when the spindle box vibrates, improves the vibration stability of the sound wave power head, effectively blocks the transmission of the vibration of the spindle box to the main frame, and reduces the vibration energy loss. The vibration isolator 4-2 is a wearing part, and in order to facilitate replacement of the vibration isolator 4-2, two ends of the vibration isolator 4-2 are fixedly connected with mounting flange structures respectively, two sides of the spindle box 4-1 are provided with vibration isolator mounting seats 4-1-1, one end of the vibration isolator 4-2 is fixed on the vibration isolator mounting seats 4-1-1, the other end of the vibration isolator is mounted on the side cover plate 1-5, and the side cover plate 1-5 is mounted on the main frame 1 through bolts, so that replacement of the vibration isolator 4-2 is facilitated. In order to prevent the main spindle box 4-1 from colliding with the main frame 1, an upper buffer block 1-3 and a lower buffer block 1-4 corresponding to the upper end and the lower end of the main spindle box 4-1 are respectively arranged at the upper part and the lower part of the main frame 1, and the upper buffer block 1-3 and the lower buffer block 1-4 can be rubber blocks and fixed on the inner side of the main frame 1 by bolts. The buffer block is utilized to effectively prevent the main spindle box 4-1 from being impacted on the main frame 1 due to overlarge up-down movement amplitude, so that the use stability and the safety of the acoustic wave power head are improved.

In order to further improve the vibration stability of the acoustic wave power head, as shown in fig. 5, preferably, each eccentric vibration mechanism has two eccentric vibrator shafts 4-4 coaxially connected, the two coaxial eccentric vibrator shafts 4-4 are axially connected through an opposite-inserting key 4-6, and the eccentric blocks of the two eccentric vibrator shafts 4-4 have the same phase, the opposite-inserting key 4-6 is that a waist-shaped boss (as shown in the cross section in fig. 4) is arranged at the shaft end of one eccentric vibrator shaft 4-4, and a waist-shaped groove is arranged at the shaft end of the other eccentric vibrator shaft 4-4, so that the two eccentric vibrator shafts 4-4 are inserted in each other through the waist-shaped boss and the waist-shaped groove during assembly, the axial torque transmission of the two eccentric vibrator shafts 4-4 is realized, and after the opposite-inserting key 4-6 is adopted, the eccentric blocks of the two eccentric vibrator shafts 4-4 are ensured to have the same phase, the eccentric blocks of the two eccentric vibrator shafts 4-4 are ensured to be consistent in phase, and the assembly precision of the eccentric vibrator shafts 4-4 is ensured, thereby improving the vibration stability of the acoustic wave power head. The eccentric vibrator shaft 4-4 may have an integral structure, and the cross section of the eccentric block may have a fan shape. Two ends of two eccentric vibrator shafts 4-4 of the same eccentric vibration mechanism are arranged in corresponding side eccentric shaft cavities 4-3 of a main shaft box 4-1 through vibrator shaft bearings 4-5, one group of vibrator shaft bearings 4-5 of one group of eccentric vibrator shafts 4-4 are arranged in the main shaft box 4-1 through rear bearing blocks 4-8, and one group of vibrator shaft bearings 4-5 of the other group of eccentric vibrator shafts 4-4 are arranged in the main shaft box 4-1 through front bearing blocks 4-9.

The higher the rotating speed of the vibrating hydraulic motor 4-10 is, the radial acting force generated by vibration needs to be born by the vibrator shaft bearing 4-5 of the eccentric vibrator shaft 4-4 in the high-speed rotating process, so that the performance requirement on the vibrator shaft bearing 4-5 is higher, and the vibrator shaft bearing 4-5 is also a main factor for restricting the high-frequency work of the existing sound wave power head. In order to solve the problems of the vibrator shaft bearing 4-5, the eccentric vibration generating device of the sound wave power head of the drilling machine further comprises a bearing cooling and lubricating system 7, wherein the bearing cooling and lubricating system 7 comprises an oil inlet pipe 7-1, an oil return pipe 7-2 and an oil spray nozzle 4-24, the oil spray nozzle 4-24 is arranged in the main shaft box 4-1, the oil spray direction faces the vibrator shaft bearing 4-5, the oil inlet pipe 7-1 is communicated with the oil spray nozzle 4-24, the oil return pipe 7-2 is connected with an oil return port on the main shaft box 4-1, the oil inlet pipe 7-1 and the oil return pipe 7-2 are respectively connected with a lubricating oil circulation control system, the lubricating oil circulation control system inputs lubricating oil into the sound wave power head through the oil inlet pipe 7-1, the lubricating oil is sprayed on the vibrator shaft bearing 4-5 through the oil spray nozzle 4-24, rapid cooling and lubricating of the bearing are achieved, and the lubricating oil in the sound wave power head returns to the lubricating oil circulation control system through the oil return pipe 7-2 for circulation use. The vibrator shaft bearing is cooled and lubricated by the lubricating oil through the lubricating oil circulation control system, the working temperature of the vibrator shaft bearing is greatly reduced, the working life of the bearing is prolonged, the performance requirement on the vibrator shaft bearing is reduced, the eccentric vibration type sound wave power head can work at a higher vibration frequency, and the working efficiency of the sound wave power head is further improved.

In order to ensure that lubricating oil is directly sprayed on the vibrator shaft bearings 4-5 to cool and lubricate the vibrator shaft bearings, in the embodiment, as shown in fig. 5, an oil spraying ring 4-7 is arranged between two groups of vibrator shaft bearings 4-5 corresponding to the connected ends of two eccentric vibrator shafts 4-4, a circle of annular oil channels communicated with an oil inlet pipe 7-1 is circumferentially arranged on the oil spraying ring 4-7, at least one oil spraying nozzle 4-24 communicated with the annular oil channels is respectively arranged on two end surfaces of the oil spraying ring 4-7, the annular oil channels and the inner wall of a main shaft box 4-1 form an oil supply oil channel, the oil inlet pipe 7-1 is communicated with the oil spraying nozzles 4-24 on the two end surfaces of the oil spraying ring 4-7 through the oil supply oil channels, so that lubricating oil can be sprayed on two groups of vibrator shaft bearings 4-5 on two sides, a back bearing seat 4-8 and a front bearing seat 4-9 which are close to the outer sides are respectively provided with an annular oil inlet pipe 7-1 (shown in fig. 12), and oil spraying nozzles 4-24 communicated with the oil inlet pipe 4-23 are respectively arranged on the inner end surfaces of the back bearing seat 4-8 and the front bearing seat 4-9, so that the lubricating oil can be quickly cooled on the two groups of the vibrator shaft bearings 4-7 through the oil spraying pipe 4-7. Referring to fig. 1 and 8, the oil inlet pipe 7-1 and the oil return pipe 7-2 are all provided with multiple paths, and in order to ensure the pipeline to be clean, the outer wall of the spindle box 4-1 is also provided with an oil inlet valve block and an oil return valve block, the oil inlet pipe 7-1 is connected to the oil inlet valve block, and the oil return pipe 7-2 is connected to the oil return valve block, so that the arrangement of the oil pipe pipeline is facilitated.

Referring to fig. 13, in this embodiment, the above-mentioned lubricating oil circulation control system includes a first pressure switch sensor 7-3, a second pressure switch sensor 7-4, a main controller 7-5, a combined valve block 7-6, an oil suction pump 7-7 and a cooling oil supply pump 7-10, wherein the main controller 7-5 can be a programmable intelligent controller, and a pressure regulating valve, a cooling oil supply pump and a control valve are integrated in the combined valve block 7-6, The throttle valve and the overflow valve are compact in structure, the pressure gauge is arranged at the valve port of the pressure regulating valve of the combined valve block 7-6, the oil pressure is convenient to observe, the cooling oil supply pump 7-10 is connected with the oil inlet of the combined valve block 7-6, the overflow port of the combined valve block 7-6 is connected to the cooling oil tank, the oil outlet of the combined valve block 7-6 is connected with the oil inlet pipe 7-1, the oil inlet pipe 7-1 is connected to the main shaft box 4-1 of the acoustic wave power head, the oil return pipe 7-2 is connected to the cooling oil tank through the oil suction pump 7-7, the first pressure switch sensor 7-3 and the second pressure switch sensor 7-4 are arranged in the pipeline of the oil inlet pipe 7-1, the first pressure switch sensor 7-3 and the second pressure switch sensor 7-4 are respectively electrically connected with the main controller 7-5, the hydraulic pressure control device is used for feeding back pressure information in the oil inlet pipe 7-1 to the main controller 7-5, the first pressure switch sensor 7-3 is a high pressure value, the second pressure switch sensor 7-4 is a low pressure value, a normal oil pressure threshold range is determined through the high and low pressure values of the first pressure switch sensor 7-3 and the second pressure switch sensor 7-4, for example, the highest pressure value of the first pressure switch sensor 7-3 can be set to be 45bar, the low pressure value of the second pressure switch sensor 7-4 can be set to be 15bar, the main controller 7-5 is electrically connected with the hydraulic load sensitive proportional valve group 7-15 for controlling the main shaft hydraulic motor 2-1 and the vibration hydraulic motor 4-10 of the sound wave power head, for controlling the operating states of the spindle hydraulic motor 2-1 and the vibration hydraulic motor 4-10 based on the pressure information fed back from the first pressure switch sensor 7-3 and the second pressure switch sensor 7-4. That is, when the oil pressure value in the oil inlet pipe 7-1 is within the threshold value range of the first pressure switch sensor 7-3 and the second pressure switch sensor 7-4, the main controller 7-5 controls the main shaft hydraulic motor 2-1 and the vibration hydraulic motor 4-10 of the acoustic wave power head to normally operate through the hydro-electric load sensitive proportional valve group 7-15, and when the oil pressure value in the oil inlet pipe 7-1 is higher than the maximum value of the first pressure switch sensor 7-3 or lower than the minimum value of the second pressure switch sensor 7-4, the lubricating oil supply circuit is abnormal, the main shaft box 4-1 of the acoustic wave power head possibly has no lubricating oil to cool and lubricate the bearing or has abnormal cooling lubricating oil flow, and at the moment, the main controller 7-5 controls the main shaft hydraulic motor 2-1 and the vibration hydraulic motor 4-10 to stop operating through the hydro-electric load sensitive proportional valve group 7-15, so that the acoustic wave power head is prevented from operating under the condition that the bearing is damaged due to poor cooling lubrication of the bearing, and the use safety and reliability of the acoustic wave power head are improved. In addition, in the lubricating oil circulation control system, a high-pressure filter 7-8 is further arranged in the pipeline of the oil inlet pipe 7-1, an oil return filter 7-9 is further arranged in the pipeline of the oil return pipe 7-2, impurities in cooling and lubricating media are effectively removed through the high-pressure filter 7-8 and the oil return filter 7-9, and the service time of cooling and lubricating oil is prolonged. Meanwhile, in order to improve the cooling effect of the bearing, a radiator is further arranged in a circulation loop of the lubricating oil circulation control system, the radiator can be a fin radiator or a cooling system arranged in a cooling oil tank, lubricating oil cools the vibrator shaft bearing 4-5 after being cooled by the radiator, and the cooling speed of the bearing is higher. In this embodiment, the oil suction pump 7-7 is a combination of a hydraulic motor and a pump, that is, the oil suction pump 7-7 is formed by combining two parts of the hydraulic motor and the pump, the oil outlet of the combined valve block 7-6 is connected with the oil inlet of the hydraulic motor in the oil suction pump 7-7, the oil outlet of the hydraulic motor in the oil suction pump 7-7 is connected with the oil inlet pipe 7-1 through the first shunt valve 7-12, and the shunt port of the first shunt valve 7-12 is connected with the cooling oil port of the vibration hydraulic motor 4-10. Specifically, the first diverter valve 7-12 preferably adopts an FLD series single-way stable diverter valve (model FLD 15-4), the oil outlet of the combined valve block 7-6 is connected to the oil inlet of the hydraulic motor in the oil suction pump 7-7 after passing through the high pressure filter 7-8, the oil suction pump 7-7 is driven to work, accumulated oil in the eccentric shaft cavity is sucked out, the oil outlet of the hydraulic motor of the oil suction pump 7-7 is connected to the oil inlet P of the first diverter valve 7-12, the steady flow port a of the first diverter valve 7-12 is connected with the oil inlet pipe 7-1, the diversion port B of the first diverter valve 7-12 is connected with the cooling oil port of the vibrating hydraulic motor 4-10 through an oil pipe, and the oil return port T of the first diverter valve 7-12 is connected with the oil tank. by adopting the oil way design, the cooling lubricating oil provided by the cooling oil supply pump 7-10 is used as the working power of the hydraulic motor of the oil suction pump 7-7, the hydraulic motor of the oil suction pump 7-7 can be driven to work for sucking oil while the vibrator shaft bearing 4-5 is subjected to oil injection lubrication and cooling, the synchronous progress of oil suction and oil return is ensured, the oil way design is ingenious and reasonable, the consistent and synchronous oil suction and oil return quantity of the cooling lubricating oil can be ensured by utilizing the pressure regulation and the flow regulation of the combined valve block 7-6, the oil way control is more convenient, and the cooling lubricating oil pump 7-10 and the oil suction pump 7-7 are matched, so that oil suction and oil return are synchronously carried out in the main shaft box 4-1 of the sound wave power head by the cooling lubricating oil medium, the eccentric shaft cavity is free from generating accumulated oil, the resistance to the rotary vibration of the eccentric vibrator shaft 4-4 is avoided, and the rotary vibration efficiency of the eccentric vibrator shaft 4-4 is ensured. meanwhile, as the vibrating hydraulic motor 4-10 rotates at a high speed, high temperature is generated in the vibrating hydraulic motor, one path of oil is input into the cooling oil port of the vibrating hydraulic motor 4-10 by using the flow dividing valve and used for cooling the vibrating hydraulic motor 4-10, the running temperature of the vibrating hydraulic motor 4-10 is reduced, and the working stability and the service life of the vibrating hydraulic motor are greatly improved.

The cooling lubricating oil of the vibrator shaft bearing 4-5 in the main shaft box 4-1 can be separated from the oil path of the supporting leg of the drilling machine, namely, as shown in fig. 13, the cooling oil supply pump 7-10 adopts a hydraulic gear pump which is respectively connected to the combined valve block 7-6 and the supporting leg multi-way reversing valve 7-13 through a second flow dividing valve 7-11, the second flow dividing valve 7-11 preferably adopts an FLD series single-way stable flow dividing valve (model is FLD-15B), the cooling oil supply pump 7-10 is connected with the oil inlet P of the second flow dividing valve 7-11, the steady flow port A of the second flow dividing valve 7-11 is connected with the oil inlet of the combined valve block 7-6, and the oil return port B of the second flow dividing valve 7-11 is connected to the supporting leg multi-way reversing valve 7-13 through an oil pipe for driving the supporting leg of the drilling machine to act. In addition, the hydraulic-electric load sensitive proportional valve group 7-15 is connected with the hydraulic variable pump 7-14, the hydraulic variable pump 7-14 supplies oil to the main shaft hydraulic motor 2-1 and the vibration hydraulic motor 4-10, the hydraulic-electric load sensitive proportional valve group 7-15 is also electrically connected with the electric control operation handle, the work of the acoustic wave power head can be operated through manual control, and oil drainage ports of the main shaft hydraulic motor 2-1 and the vibration hydraulic motor 4-10 are respectively connected to the oil return pipe 7-2. Other control circuits and hydraulic control systems of the acoustic wave power head are similar to those of the prior art, and will not be described herein. The vibrator shaft bearing is cooled and lubricated by the lubricating oil through the lubricating oil circulation control system, the working temperature of the vibrator shaft bearing is greatly reduced, the working life of the bearing is prolonged, the performance requirement on the vibrator shaft bearing is reduced, the eccentric vibration type sound wave power head can work at a higher vibration frequency, and the working efficiency of the sound wave power head is further improved. Experiments prove that the excitation frequency of the acoustic wave power head can reach 0-150 Hz, the maximum excitation force reaches 99KN@150Hz, and compared with the existing acoustic wave power head, the acoustic wave power head can efficiently work at higher excitation frequency.

In addition, as shown in fig. 2 and 3, in this embodiment, in order to facilitate angle adjustment of the acoustic power head, an acoustic power head swinging mechanism is further provided on the main frame 1, where the acoustic power head swinging mechanism includes a mounting bracket 6 and a yaw cylinder 6-1, the upper end of the mounting bracket 6 is hinged with a connecting arm 1-1 on the upper portion of the main frame 1, one end of the yaw cylinder 6-1 is hinged with the lower end of the mounting bracket 6, the other end is hinged with a supporting seat 1-2 on the main frame 1, and a hinge point of the mounting bracket 6 and the main frame 1, a hinge point of the yaw cylinder 6-1 and the mounting bracket 6, and a hinge point of the yaw cylinder 6-1 and the supporting seat 1-2 form a triangle structure, and rotation of the main frame 1 can be controlled by controlling telescopic movement of the yaw cylinder 6-1, so as to change the direction of the acoustic power head, and the acoustic power head swinging angle is convenient to control, and the structure is simple and stable.

According to the eccentric vibration generating device of the acoustic power head of the drilling machine, the spindle of the acoustic power head is in transmission connection with the spindle hydraulic motor through the spline structure, the spindle hydraulic motor drives the spindle to rotate, the spindle is rotatably arranged in the spindle box, the spindle box is suspended in the main frame through the vibration isolator, the two eccentric vibration mechanisms are symmetrically arranged in the spindle box and are respectively arranged at the left side and the right side of the spindle, the two eccentric vibration mechanisms in the spindle box are used for generating high-frequency vibration, the rotating motion and the vibration of the spindle are not influenced mutually, parts for driving the eccentric vibration mechanisms to vibrate are few, vibration inertia is small, vibration generated by the spindle is small, vibration excitation generated by the spindle is more stable, vibration transmission efficiency is higher, the acoustic power head structure is more reasonable and compact, the installation position precision of the two eccentric vibrator shafts is easy to ensure, the assembly and the manufacturing are convenient, and the service life of the acoustic power head is prolonged.

It will be understood that when an element is referred to as being "fixed to" another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention belongs. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention.

The invention and its embodiments have been described above schematically, without limitation, and the actual construction is not limited to this, as it is shown in the drawings, which are only one of the embodiments of the invention. Therefore, if one of ordinary skill in the art is informed by this disclosure, a structural manner and an embodiment similar to the technical scheme are not creatively devised without departing from the gist of the present invention, and all the structural manners and the embodiments belong to the protection scope of the present invention.

Claims

1. The utility model provides a drilling machine sound wave unit head eccentric vibration generating device, includes main frame (1), main shaft rotary mechanism (2) and main shaft vibration mechanism (4), its characterized in that:

The main shaft rotating mechanism (2) comprises a main shaft hydraulic motor (2-1) and a main shaft (2-7), the main shaft hydraulic motor (2-1) is arranged at the upper part of the main frame (1), an output shaft of the main shaft hydraulic motor (2-1) is in transmission connection with the main shaft (2-7) through a spline structure, the main shaft hydraulic motor (2-7) is used for driving the main shaft (2-7) to rotate and allow the main shaft (2-7) to axially move up and down, the main shaft hydraulic motor (2-1) is arranged at the upper part of the main frame (1) through a main shaft deviation rectifying mechanism (3), the main shaft deviation rectifying mechanism (3) comprises an outer swinging frame (3-1) and an inner swinging frame (3-2), two sides of the outer swinging frame (3-1) are rotatably arranged on deviation rectifying bearing seats (1-6) at the upper part of the main frame (1) through outer rotating shafts (3-3), two sides of the inner swinging frame (3-2) are rotatably arranged inside the outer swinging frame (3-1) through inner rotating shafts (3-4), a gap is reserved between the inner swinging frame (3-2) and the outer swinging frame (2-1), the rotation axis of the outer swinging frame (3-1) is vertical to the rotation axis of the inner swinging frame (3-2);

The main shaft vibration mechanism (4) comprises a main shaft box (4-1), vibration isolators (4-2) and two groups of eccentric vibration mechanisms which are symmetrically arranged, wherein the main shaft box (4-1) is arranged in the main frame (1) in a suspending mode through the vibration isolators (4-2), a main shaft hole is formed in the center of the main shaft box (4-1), the main shaft (2-7) is rotatably arranged in the main shaft hole through a main shaft bearing, the two groups of eccentric vibration mechanisms are symmetrically arranged in the main shaft box (4-1), the two groups of eccentric vibration mechanisms are respectively arranged on the left side and the right side of the main shaft (2-7), each group of eccentric vibration mechanisms comprises an eccentric vibrator shaft (4-4) and a vibration hydraulic motor (4-10), the eccentric vibrator shaft (4-4) is arranged in an eccentric shaft cavity (4-3) on the corresponding side of the main shaft box (4-1) through a vibrator shaft bearing, the vibration hydraulic motor (4-10) is arranged on one side of the main shaft box (4-1), and the output shaft (4-10) is in opposite rotation with the eccentric vibrator shaft (4-4), and the two groups of eccentric vibration mechanisms are in synchronous vibration and are in vibration mode.

2. The eccentric vibration generating device of the acoustic power head of the drilling machine is characterized in that a gasket (3-5) is sleeved on the inner rotating shaft (3-4), the gasket (3-5) is positioned between the outer swinging frame (3-1) and the inner swinging frame (3-2), a swinging gap is formed between the outer swinging frame (3-1) and the inner swinging frame (3-2), and a shaft sleeve (3-6) is further arranged between the outer rotating shaft (3-3) and the deviation rectifying bearing seat (1-6) and between the inner rotating shaft (3-4) and the outer swinging frame (3-1).

3. The device for generating eccentric vibration of the acoustic power head of the drilling machine according to claim 1, wherein the spline structure comprises a spline shaft (2-5) and a spline shaft sleeve (2-6), the upper end of the spline shaft (2-5) is connected with an output shaft of a main shaft hydraulic motor (2-1) through a coupling (2-3), the spline shaft sleeve (2-6) is fixedly arranged in a shaft cavity at the upper end of the main shaft (2-7), the spline shaft (2-5) is connected with the spline shaft sleeve (2-6) through spline transmission, a protective cover (2-8) is sleeved outside the spline shaft (2-5) between the inner swing frame (3-2) and the main shaft box (4-1), and the coupling (2-3) is rotatably arranged in a central shaft hole of the inner swing frame (3-2) through a coupling bearing (2-4).

4. The device for generating eccentric vibration of the acoustic power head of the drilling machine is characterized in that the upper end of the spindle (2-7) is supported in a spindle shaft hole of the spindle box (4-1) through a spindle upper bearing (2-9), the lower end of the spindle (2-7) is supported in the spindle shaft hole of the spindle box (4-1) through two groups of spindle lower bearings (2-11), the two groups of spindle lower bearings (2-11) are positioned through shaft shoulders in the spindle shaft hole, a spindle flange (5) is further arranged at the lower end of the spindle (2-7), an upper bearing cover (2-10) is further arranged at the upper part of the spindle shaft hole of the spindle box (4-1), an elastic sealing ring is further arranged between the upper bearing cover (2-10) and the outer wall of the spindle (2-7), a lower end cover (2-12) is further arranged at the lower part of the spindle shaft hole of the spindle box (4-1), the rear part of the spindle flange (5) is sleeved at the lower end of the spindle (2-7) through a shaft shoulder in the spindle shaft hole, and an elastic sealing ring is also arranged between the rear end face of the spindle flange (5) and the lower end cover (2-11).

5. The eccentric vibration generating device of the acoustic power head of the drilling machine according to any one of the claim 1 to 4, the method is characterized in that: one ends of the eccentric vibrator shafts (4-4) of the two groups of eccentric vibrating mechanisms, which are far away from the vibrating hydraulic motors (4-10), extend out of the main shaft box (4-1), and the eccentric vibrator shafts (4-4) of the two groups of eccentric vibrating mechanisms are connected through a synchronous mechanism (8), the synchronous mechanism (8) comprises a first synchronous belt wheel (4-11), a second synchronous belt wheel (4-12), a reversing belt wheel (4-14), a tensioning belt wheel (4-15) and a synchronous belt (4-19), the first synchronous belt wheel (4-11) is arranged at the extending end of a group of eccentric vibrator shafts (4-4), the second synchronous pulley (4-12) is arranged at the extending end of the other group of eccentric vibrator shafts (4-4), the reversing belt wheel (4-14) and the tensioning belt wheel (4-15) are arranged on the main shaft box (4-1), the synchronous belt (4-19) is a double-sided tooth synchronous belt, and the synchronous belt (4-19) is sequentially wound between the first synchronous belt wheel (4-11), the reversing belt wheel (4-14), the tensioning belt wheel (4-15) and the second synchronous belt wheel (4-12).

6. The device for generating eccentric vibration of the acoustic power head of the drilling machine according to claim 5, wherein the synchronizing mechanism (8) is further provided with a middle belt pulley (4-13), the middle belt pulley (4-13) is rotatably arranged on the main shaft box (4-1) through a middle belt pulley shaft (4-16), a rotating speed sensor (4-17) for detecting the rotating speed of the eccentric vibrator shaft (4-4) is further arranged between the middle belt pulley shaft (4-16) and the main shaft box (4-1), and the middle belt pulley (4-13) is meshed with the synchronous belt (4-19).

7. The device for generating the eccentric vibration of the acoustic power head of the drilling machine according to claim 5, wherein each eccentric vibration mechanism is provided with two eccentric vibrator shafts (4-4) which are coaxially connected, the two coaxial eccentric vibrator shafts (4-4) are axially connected through a butt-joint key (4-6), the eccentric blocks of the two eccentric vibrator shafts (4-4) have the same phase, and two ends of the two eccentric vibrator shafts (4-4) of the same eccentric vibration mechanism are arranged in corresponding side eccentric shaft cavities (4-3) of a main shaft box (4-1) through vibrator shaft bearings (4-5).

8. The device for generating eccentric vibration of acoustic power head of drilling machine according to claim 5, wherein the vibration isolator (4-2) is a columnar rubber block having a cross-sectional shape with a transverse dimension larger than a longitudinal dimension, and the longitudinal direction of the columnar rubber block is consistent with the vibration direction of the main shaft (2-7).

9. The device for generating eccentric vibration of acoustic power head of drilling machine according to claim 8, wherein the upper part and the lower part of the main frame (1) are respectively provided with an upper buffer block (1-3) and a lower buffer block (1-4) corresponding to the upper end and the lower end of the main shaft box (4-1).