RU2649679C1 - Vibratory pile driver - Google Patents

Abstract

FIELD: machine building.

SUBSTANCE: invention relates to the field of machine building and can be used in construction for piling. Vibratory pile driver contains a body closed by the upper and lower covers, loading plates fixed in the lower part of the body, an electric motor fixed to the top cover and kinematically connected to vibration exciters, a head. Inside the body in an even number, in two rows, parallel to each other vibration exciters of unidirectional action are placed, the number of which is unlimited, each of which is a fixed flat gear with teeth on the end face facing the bottom cover, fixed inside to the body and having a central hole through which the subdivided shaft is passed, on the upper end of which a driven gear is fixed, which comes into engagement with a drive gear fixed to the shaft of the electric motor. Part of the subdivided shaft, referring to the corresponding vibration exciter, is formed integrally with a cross, on each of the four ends of which there is a single cylindrical gear with the possibility of free rotation, meshing with the teeth of the fixed gear and having counterweights. Counterweight of each subsequent gear is shifted relative to the previous gear by 90 degrees.

EFFECT: technical result consists in providing higher efficiency, lower energy consumption and time for piling.

1 cl, 7 dwg

Description

The present invention relates to the field of mechanical engineering and can be used in construction for immersion piles.

A known vibro-driver, comprising a housing, loading plates fixed in the lower part of the housing, an electric motor kinematically connected with vibration exciters installed inside the housing, a headgear.

/ P.S. Grinkevich, Construction Machines, ed. 3, M., Mechanical Engineering, 1975, p. 348, fig. 211 a /.

The disadvantages of the known vibrator are: the impact of the exciter on the electric motor, high energy costs, long piling times.

These shortcomings are due to the design of the vibrator.

It is also known vibration device for immersion piles, containing a vibration exciter with unbalanced shafts, connected to the working body by means of a hinge located at an equal distance from the unbalanced shafts. The hinge is located in the center parallel to the unbalanced shafts.

/ Aut. testimonial. No. 1150306, class E02D 7/18 /.

Known vibration device for ed. testimonial. No. 1150306, as the closest in technical essence and achieved useful result, taken as a prototype.

The disadvantages of the known vibration device adopted for the prototype are the same.

These disadvantages are due to the design of the vibrating device.

The present invention is to improve the technical characteristics of the vibrating device.

The technical result is ensured by the fact that in the vibro driver comprising a housing closed by upper and lower covers, loading plates fixed in the lower part of the housing, an electric motor mounted on the upper cover and kinematically connected to vibration exciters, the head cap according to the invention is arranged in an even amount inside the housing, in two rows, parallel to each other, unidirectional vibration exciters, the number of which is unlimited, each of which is a stationary flat gear with teeth on the end side facing the bottom cover, attached inside to the housing and having a central hole through which a composite shaft is passed, on the upper end of which a driven gear is fixed, engaged with the pinion gear mounted on the motor shaft, a part of the composite shaft related to the corresponding vibration exciter, made at the same time with a cross, on each of the four ends of which one cylindrical gear is installed with the possibility of free rotation, which are engaged with the teeth of the stationary gear and having a counterweight, and the counterweight of each subsequent gear is offset from the previous gear by 90 degrees.

The invention is illustrated by drawings, where:

in FIG. 1 shows a General view of the vibrator;

in FIG. 2 is a diagram of a drive of vibration exciters;

in FIG. 3 - sectional vibrator device;

in FIG. 4 - bottom view of the vibration exciter;

in FIG. 5 - scan stationary gear exciter and the location of the balances relative to each other;

in FIG. 6 - the trajectory of the balances of the vibration exciter;

in FIG. 7 is a diagram of creating a unilateral inertial centrifugal force on a vibration exciter.

The pile vibrator includes a housing 1 closed by upper 2 and lower 3 covers, loading plates 4 fixed in the lower part of housing 1, an electric motor 5 mounted on the upper cover 2 and kinematically connected to vibration exciters 6, a head cap 7. Inside the housing 1 are placed in an even number , in two rows, parallel to each other vibration exciters 6 unidirectional action, the number of which is not limited. All vibration exciters 6 are the same in design. Each vibration exciter 6 contains a fixed gear 8 with teeth on the front side facing the lower cover 3, attached to the housing 1 and having a central hole through which the composite shaft 9 is passed. Both parts of the composite shaft 9 have protrusions 10 on which the sleeve 11 is worn. On the upper part of the composite shaft 9, the driven gear 12 is fixed, which engages with the drive gear 13, mounted on the shaft of the electric motor 5. The part of the composite shaft 9 related to the corresponding vibration exciter 6 is made integral with the cross 14, on each of the four ends of which one cylindrical gear 15 is installed with the possibility of free rotation, engaging with the teeth of the stationary gear 8 and having counterweights 16. The counterweight 16 of each subsequent gear 15 is offset 90 degrees from the previous gear 15. The vibrator with its headgear 7 is put on the upper part of the pile 17 and secured by a device not shown in the drawing.

The vibrator operates as follows.

After installing the piles 17 on the base machine, securing the headgear 7 on it and bringing it to the place of driving, the electric motor 5 is turned on. In this case, the driving gear 13 rotates and drives the composite shafts 9 in the opposite directions through the driven gears 12. Together with the composite shafts 9, the crosses 14 and the cylindrical gears 15 rotate, which move along the teeth of the stationary gears 8. In this case, the counterweights 16 move along curved paths, as shown in FIG. 6. The resulting inertial centrifugal forces Fн act in the direction of the lower cover 3 and immerse the pile 17, and the forces Fв act in the opposite direction. Due to the fact that the balances 16 are installed with a shift of 90 degrees relative to each other (Fig. 5), the forces Fн and Фв act on them at different times. In FIG. 7 it can be seen that at each separate moment of time t (in Fig. 7 this is the distance between the longitudinal lines), the force Fin one of the balances 16 is balanced by one of the forces Fн, and the other two forces Fн are inertial centrifugal unidirectional forces acting on the pile 17 and forcing her plunge into the ground. Thus, when the electric motor 5 is continuously created, a unidirectional force is acting on the headgear 7.

The invention allows to achieve higher productivity, save energy, reduce the time for driving piles.

Claims (1)

A vibro-driver containing a housing closed by upper and lower covers, loading plates fixed in the lower part of the housing, an electric motor mounted on the upper cover and kinematically connected to vibration exciters, a headgear characterized in that the housing is arranged in an even amount, in two rows, in parallel exciters of unidirectional action, the number of which is unlimited, each of which is a stationary flat gear with teeth on the front side facing the bottom a lid attached internally to the housing and having a central hole through which a composite shaft is passed, on the upper end of which a driven gear is fixed that engages with a drive gear fixed to the motor shaft, the part of the composite shaft related to the corresponding vibration exciter is made integral with the cross , on each of the four ends of which one cylindrical gear is installed with the possibility of free rotation, engaging with the teeth of the stationary gear and having against oats, and the counterweight of each subsequent gear is offset from the previous gear by 90 degrees.

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