CN118706502A - A roadbed compaction detection sampling device and method for highway engineering - Google Patents

Abstract

The invention relates to the technical field of highway engineering, and discloses a roadbed compaction detection sampling device for highway engineering, comprising a chassis, a circular through groove being opened on the chassis, a first vertical pole being fixedly installed on the top of the chassis, and the roadbed compaction detection sampling device and method for highway engineering, by providing a rotatable supporting component, after a ring knife is inserted into the soil and a soil sample is taken out, one of the supporting components can be used to drag the bottom of the sample, and then the periphery of the soil sample can be rotationally cut by means of the function that the cutting component can rotate around the axis of a hydraulic telescopic rod, thereby realizing that part of the soil compressed by the contact with the ring knife after insertion is cut and separated during the rotation of the cutting component, so that the remaining soil sample can be taken out under normal conditions for compaction detection, thereby greatly improving the reliability of the sample result calculation of the detection sampling device.

Description

A roadbed compaction detection sampling device and method for highway engineering

Technical Field

The invention relates to the technical field of highway engineering, and in particular to a roadbed compaction detection sampling device and method for highway engineering.

Background Art

The roadbed compaction test of highway projects is one of the most critical indicators in the process of municipal road subgrade and pavement construction. It directly affects the quality control of engineering construction. The higher the compaction of the road, the greater its density, the better the overall performance, and the longer the service life of the road. Therefore, the roadbed compaction test of highway projects is crucial.

The existing compaction detection methods generally include sand filling method, ring knife method, core drilling method, etc. Among them, the ring knife method mainly involves inserting a ring knife into the roadbed soil to be detected to take samples, and then testing the volume and weight of the sampled soil, and then calculating the density of the sampled soil. In this way, by comparing it with the standard density, it is possible to know whether the compaction of the roadbed is qualified. However, the existing ring knife method sampling equipment has a simple structure and a single function. During the sampling process, the ring knife needs to be inserted into the soil, so the soil contained in the ring knife will be squeezed, thereby increasing the density of the part of the soil in contact with the ring knife, and the corresponding original soil volume becomes smaller under the squeezing of the ring knife, which will lead to inaccurate subsequent calculation results. At the same time, the existing detection sampling device cannot ensure that the soil around the sampling block will not loosen and fall during the transfer process after sampling, which will greatly affect the accuracy of the final calculation results.

To this end, we propose a roadbed compaction detection sampling device and method for highway engineering.

Summary of the invention

The present invention provides a roadbed compaction detection sampling device and method for highway engineering, which has the advantage of ensuring the accuracy of calculation results and solves the problems raised in the above-mentioned background technology.

The present invention provides the following technical scheme: a roadbed compaction detection sampling device for highway engineering, comprising a chassis, a circular through groove is provided on the chassis, a first vertical pole is fixedly installed on the top of the chassis, a supporting assembly is movably sleeved on the first vertical pole, an inflating device is fixedly installed on the top of the first vertical pole, a second vertical pole is fixedly installed on the top of the inflating device, a transverse hanging plate is arranged on the second vertical pole, a hydraulic telescopic rod is fixedly installed on the bottom end of the transverse hanging plate, a pressing assembly is fixedly installed on the bottom end of the hydraulic telescopic rod, a ring knife is movably installed on the bottom end of the pressing assembly, a straight air bag is embedded in the ring knife, an air outlet pipe is fixedly installed on the inflating device, a cutting assembly is movably installed on the supporting assembly, a lifting assembly is movably installed on the supporting assembly, and an air guide is fixedly installed on the ring knife;

The supporting assembly comprises a bottom supporting bracket, a limiting groove is provided on the bottom supporting bracket, a first motor is fixedly mounted on the upper surface of the bottom supporting bracket, a first gear is fixedly mounted on the output shaft of the first motor, a tray is fixedly mounted on the top end of the first motor, and a supporting plate is movably mounted on the end of the first motor;

The pressing assembly comprises a center disk, side rods are evenly fixedly installed on the circumferential side of the center disk, pressure sensors are fixedly installed on the lower surfaces of the side rods, and locking blocks are fixedly installed on the ends of the lower surfaces of the side rods;

The cutting assembly comprises an outer shell, a pushing airbag is installed at one end of the inner part of the outer shell, a push rod is fixedly installed at one end of the pushing airbag, a first spring is fixedly installed between the pushing airbag and the inner part of the outer shell, a sleeve block is fixedly installed on one side of the outer shell, a straight groove is opened at the inner bottom and top of the outer shell, a base plate is fixedly installed at the end of the push rod, a cutting knife is fixedly installed at the middle part of one side of the base plate, connecting rods are movably installed at both ends of the outer shell, a pressure roller is movably installed on the connecting rod, a positioning pin is fixedly installed at the top of the outer shell, a sleeve rod is movably sleeved on the positioning pin, the bottom end of the sleeve rod is fixedly connected to the top end of the base plate, a traction rod is movably installed at the end of the sleeve rod, an air guide tube is fixedly installed at the top of the outer shell, and a second spring is fixedly installed between the connecting rod and the outer part of the outer shell;

The lifting assembly includes a second motor and a positioning pole, a second gear is fixedly mounted on the output shaft of the second motor, a third gear is meshed on the second gear, a screw is fixedly mounted on the top end of the third gear, a stabilizing member is movably mounted on the top end of the screw, the top end of the stabilizing member is fixedly connected to the top end of the positioning pole, and a sleeve is fixedly mounted on the bottom end of the stabilizing member.

In a preferred embodiment, the number of the air outlet pipes is two and they are respectively connected with the cutting assembly and the air guide, the air guide is connected with the straight air bag, the number of the straight air bags is multiple and each adjacent straight air bag is connected, and the straight air bag is flush with the inner wall of the ring knife in the contracted state.

In a preferred embodiment, a threaded hole is provided at the top of the inflatable device, and the cross-hanging plate is detachably connected to the top of the second vertical pole by bolts. The cross-hanging plate can be slidably arranged on the second vertical pole, and a threaded hole corresponding to the position of the bolt is provided on the cross-hanging plate, and the threaded hole also corresponds to the position of the threaded hole on the inflatable device.

In a preferred embodiment, the diameter of the circular through groove on the chassis is greater than or equal to the outer diameter of the ring knife, and the first vertical rod is fixedly installed in the middle of one side of the circular through groove on the upper surface of the chassis.

In a preferred embodiment, the bottom support bracket is composed of two long rod parts arranged at an obtuse angle, the limit groove is located at the end where the two long rods intersect and is opened with the central axis of the first vertical rod as the axis, the end of the chassis located in the limit groove is fixedly installed, the first motor is arranged at the upper part of one of the bottom support brackets, a supporting short rod is arranged at the end of the bottom support bracket, the tray is fixedly installed on the supporting short rod, the supporting plate is movably sleeved on the supporting short rod at the end of one of the bottom support brackets, and a gear ring is provided on the outside of one end of the supporting plate sleeved on the short rod of the first motor, and the first gear is meshed with the gear ring at the end of the supporting plate.

In a preferred embodiment, the lower surface of the pressure sensor is arranged flush with the top of the ring knife, and the locking block is in a T-shaped structure and is inserted into the ring knife for movement.

In a preferred embodiment, the outer shell is movably installed at one end of the upper surface of the support plate, the two ends of the pushing airbag are respectively fixedly connected to the outer shell and the push rod, the middle part is a retractable part, the top and bottom ends of the pushing airbag are respectively movably arranged in the straight groove through the positioning pin shaft, the end of the push rod passes through the outer shell to the outside and is fixedly connected to the base plate, the cutting knife is inclined, and the sleeve block is movably sleeved on the lifting assembly.

In a preferred embodiment, the interior of the pressure roller is hollow and the side surfaces are evenly provided with straight air outlet grooves that are arranged through the hollow part. The top end of the pressure roller is sealed and fixedly connected to the air guide tube, the air guide tube is connected through the inside of the pushing airbag, the bottom end of the pushing airbag is sealed and connected through the air outlet pipe, the locating pin is located at the end where the cutting knife is located and is fixedly installed in the middle of the top of the outer shell, one end of the two traction rods are movably connected to the end of the sleeve rod, and the ends of the two traction rods connected to the sleeve rod are arranged with a tip structure pointing in the direction of the ring knife.

In a preferred embodiment, the second gear meshes with two third gears simultaneously, the screw is threadedly connected in the sleeve block, the positioning pole is slidably connected inside the sleeve block, and the sleeve plate is movably sleeved on the top end of the first pole.

A roadbed compaction detection sampling device for highway engineering, the specific use method is as follows:

S1. Rotate the supporting assembly as a whole to a position where the two trays do not overlap with the circular grooves on the chassis, then unscrew the bolts between the top of the second vertical pole and the cross-hanging plate, move the cross-hanging plate with the hydraulic telescopic rod, the pressing assembly and the ring knife downward, until the end of the cross-hanging plate fits against the top of the inflatable device, and then tighten the bolts again;

S2, start the hydraulic telescopic rod, the hydraulic telescopic rod extends to drive the ring knife to insert into the soil to sample the sample, after the sampling is completed, start the hydraulic telescopic rod again to move up, lift the soil sample, and then move the horizontal hanging plate to the top of the second vertical pole again and fix it with bolts;

S3, rotating the bottom support bracket so that the long rod at one end of the support plate is installed to the middle of the circular groove of the chassis, and then starting the hydraulic telescopic rod to move down until the soil sample is placed on the upper surface of the tray, and then starting the first motor, the first motor drives the first gear to rotate, and the first gear drives the support plate to rotate, thereby driving the cutting assembly to rotate around the sample for cutting, and the hydraulic telescopic rod starts to shrink when the cutting assembly needs to move up, slowly lifting the ring knife upward, and at the same time starting the inflation device, a part of the air pressure generated by the inflation device enters the air guide through the jacking assembly, and then enters the straight air bag to clamp the soil, and the other part enters the push air bag through the jacking assembly, pushing the air bag to expand and drive the push rod to move, thereby pushing the cutting knife to fit the side of the soil, and the sleeve rod moves under the drive of the base plate, and the traction rods on both sides drive the pressure rollers on both sides to rotate and shrink toward the middle, and then the pressure rollers also fit the soil surface, compacting the soil during the rotation process until the entire soil sample periphery is completely cut;

S4. The inflation device is closed first, and then the hydraulic telescopic rod is started to extend again, so that the ring knife is covered on the outside of the cut soil sample, and then the inflation device is started. The air pressure makes the straight airbag expand to clamp the soil sample, and then the supporting assembly is rotated to make the other tray rotate to the bottom of the soil sample, and then the hydraulic telescopic rod is closed to complete the removal of the cut soil from one tray, and then weigh it, and finally the compaction degree of the soil roadbed is calculated based on the volume and weight.

The present invention has the following beneficial effects:

1. The roadbed compaction detection sampling device and method for highway engineering is provided with a rotatable supporting component. After the ring cutter is inserted into the soil and the soil sample is taken out, one of the supporting components can be used to drag the bottom of the sample, and then the cutting component can be rotated around the axis of the hydraulic telescopic rod to perform rotational cutting on the periphery of the soil sample, thereby achieving that part of the soil compressed by the contact with the ring cutter after insertion is cut and separated during the rotation of the cutting component, so that the remaining soil sample can be taken out under normal conditions for compaction detection, thereby greatly improving the reliability of the sample result calculation of the detection sampling device.

2. The sampling device and method for detecting the compaction degree of roadbed in highway engineering are provided with an air-filling device, and two air outlet pipes are connected to the air-filling device, and the two air outlet pipes are respectively connected to the cutting assembly and the air guide member, so that the airflow generated by the air-filling device can be poured into the air guide member through the air outlet pipe, and then the pressing assembly embedded in the ring cutter is inflated and bulged, and the bulged pressing assembly can ensure the stability of the sample during the process of rotating cutting and moving upward of the cutting assembly, and after the cutting of the sample is completed, the pressing assembly can be bulged to clamp the sample, and then the supporting assembly is rotated to place it On the other hand, the airflow entering the cutting assembly can expand the push airbag and move the push rod, so that the pressure roller can gather to the middle with the movement of the push rod, and then ensure that the pressure roller can always roll on the surface of the soil sample with a certain pressure during the rotary cutting process, so as to achieve the compaction of the side of the soil sample after cutting, and avoid too much soil debris falling, which will lead to excessive errors in the subsequent weighing results. Since the volume is cut by the same cutting assembly with the same radius, the volume value is the same, so that a very accurate calculation result of the sample compaction degree can be obtained.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG1 is a schematic diagram of a three-dimensional structure of the present invention;

FIG2 is an enlarged structural schematic diagram of point A in FIG1 of the present invention;

FIG3 is an enlarged structural schematic diagram of point B in FIG1 of the present invention;

FIG4 is a schematic diagram of a first partial three-dimensional structure of the present invention;

FIG5 is a schematic diagram of the three-dimensional structure of the pressing assembly of the present invention;

FIG6 is a schematic diagram of a second partial three-dimensional structure of the present invention;

FIG7 is a schematic diagram of a three-dimensional structure of a support assembly and a jacking assembly connected to each other according to the present invention;

FIG8 is a schematic diagram of a three-dimensional structure of a cutting assembly and a lifting assembly connected to a support plate according to the present invention;

FIG9 is a schematic diagram of the three-dimensional structure of the cutting assembly of the present invention;

FIG10 is a schematic diagram of a three-dimensional partial cross-sectional structure of a cutting assembly according to the present invention;

FIG. 11 is a schematic cross-sectional view of the cutting assembly of the present invention.

In the figure: 1, chassis; 2, supporting assembly; 21, bottom support bracket; 22, limit slot; 23, first motor; 24, first gear; 25, tray; 26, supporting plate; 3, first vertical pole; 4, inflating device; 5, second vertical pole; 6, horizontal hanging plate; 7, hydraulic telescopic rod; 8, pressing assembly; 81, center plate; 82, side rod; 83, pressure sensor; 84, locking block; 9, ring knife; 10, straight airbag; 11, air outlet pipe; 12, cutting assembly; 1201, outer shell; 1202, push airbag; 1203, Push rod; 1204, first spring; 1205, sleeve block; 1206, straight groove; 1207, base plate; 1208, cutting knife; 1209, connecting rod; 1210, pressure roller; 1211, positioning pin; 1212, sleeve rod; 1213, traction rod; 1214, air guide tube; 1215, second spring; 13, lifting assembly; 131, second motor; 132, positioning pole; 133, second gear; 134, third gear; 135, screw; 136, stabilizing member; 137, sleeve plate; 14, air guide member.

DETAILED DESCRIPTION

The technical solution of the present invention will be clearly and completely described below in conjunction with the accompanying drawings in the present invention. In addition, the forms of the various structures recorded in the following embodiments are only examples. The roadbed compaction detection sampling device and method for highway engineering involved in the present invention are not limited to the various structures recorded in the following embodiments. All other embodiments obtained by ordinary technicians in this field without making creative work belong to the scope of protection of the present invention.

Please refer to Figures 1-3, a roadbed compaction detection sampling device for highway engineering, including a chassis 1, a circular through groove is opened on the chassis 1, a first upright pole 3 is fixedly installed on the top of the chassis 1, a supporting assembly 2 is movably sleeved on the first upright pole 3, an inflating device 4 is fixedly installed on the top of the first upright pole 3, a second upright pole 5 is fixedly installed on the top of the inflating device 4, a cross-hanging plate 6 is arranged and installed on the second upright pole 5, a hydraulic telescopic rod 7 is fixedly installed on the bottom end of the cross-hanging plate 6, a pressing assembly 8 is fixedly installed on the bottom end of the hydraulic telescopic rod 7, a ring knife 9 is movably installed on the bottom end of the pressing assembly 8, a straight air bag 10 is embedded and installed in the ring knife 9, an air outlet pipe 11 is fixedly installed on the inflating device 4, a cutting assembly 12 is movably installed on the supporting assembly 2, a lifting assembly 13 is movably installed on the supporting assembly 2, and an air guide 14 is fixedly installed on the ring knife 9;

Compared with the prior art, the present application is provided with a rotatable supporting component 2. After the ring knife 9 is inserted into the soil and the soil sample is taken out, one of the supporting components 2 can be used to drag the bottom of the sample, and then the cutting component 12 can rotate around the axis of the hydraulic telescopic rod 7 to perform rotational cutting on the periphery of the soil sample, thereby achieving that part of the soil compressed by the contact with the ring knife 9 after insertion is cut and separated during the rotation of the cutting component 12, so that the remaining soil sample can be taken out under normal conditions for compaction detection, thereby greatly improving the reliability of the sample result calculation of the detection sampling device, and at the same time, an inflation device 4 is provided, and two air outlet pipes 11 are connected to the inflation device 4, and the two air outlet pipes 11 are respectively connected to the cutting component 12 and the air guide 14, so that the airflow generated by the inflation device 4 can be poured into the air guide 14 through the air outlet pipe 11, and then the downward pressing component 8 installed in the ring knife 9 can be embedded. Inflated, the inflated pressing component 8 can ensure the stability of the sample during the process of the cutting component 12 rotating and cutting and moving up, and after the cutting of the sample is completed, the pressing component 8 can be used to inflate the sample, and then the supporting component 2 can be rotated to place it on another platform for weighing. On the other hand, the airflow entering the cutting component 12 can push the airbag 1202 to expand and push the push rod 1203 to move, so that the pressure roller 1210 can gather to the middle with the movement of the push rod 1203, and then ensure that the pressure roller 1210 can always roll on the surface of the soil sample with a certain pressure during the rotating cutting process, so as to achieve the compaction of the side of the soil sample after cutting, avoid excessive soil debris falling and cause excessive errors in the subsequent weighing results, and the volume is the same because the same cutting component 12 is cut with the same radius, so the volume value is the same, so that a very accurate sample compaction calculation result can be obtained.

Please refer to Figures 1-6, a roadbed compaction detection sampling device for highway engineering includes an air outlet pipe 11, the number of the air outlet pipes 11 is two and they are respectively connected to the cutting assembly 12 and the air guide 14, the air guide 14 is connected to the straight air bag 10, the number of the straight air bag 10 is multiple and each adjacent straight air bag 10 is connected, and the straight air bag 10 is flush with the inner wall of the ring cutter 9 in the contracted state;

In this embodiment, it should be noted that when cutting the newly sampled soil sample, the expanded straight airbag 10 can be used to ensure the clamping effect of the sample, thereby preventing the soil sample from rotating during the rotational cutting process of the cutting component 12 and causing the cutting effect to deteriorate. At the same time, after the cutting is completed, the soil sample can be lifted by the clamping effect of the expanded straight airbag 10 to facilitate subsequent weighing.

Please refer to FIG1 , a sampling device for detecting the compaction degree of roadbed used in highway engineering, comprising an air filling device 4, a threaded hole is provided at the top of the air filling device 4, a cross hanging plate 6 is detachably connected to the top of the second vertical pole 5 by bolts, the cross hanging plate 6 can be slidably arranged on the second vertical pole 5, a threaded hole corresponding to the position of the bolt is provided on the cross hanging plate 6, and the threaded hole corresponds to the position of the threaded hole on the air filling device 4;

In this embodiment, it should be noted that when the ring knife 9 needs to be inserted into the soil for sampling, the cross-hanging plate 6 can be separated from the top of the second vertical pole 5, and then the cross-hanging plate 6 and the hydraulic telescopic rod 7 can be moved down to the top of the inflation device 4, and bolts can be installed between the cross-hanging plate 6 and the top of the inflation device 4. In this way, the extension of the hydraulic telescopic rod 7 can press the ring knife 9 down into the soil for soil sampling. After the sampling is completed, the cross-hanging plate 6 can be lifted to the top of the second vertical pole 5 and fixed, thereby completing the sampling process.

Please refer to FIG1 , a sampling device for detecting the compaction degree of roadbed used in highway engineering, comprising a chassis 1, a circular through groove on the chassis 1 having a diameter greater than or equal to the outer diameter of a ring cutter 9, and a first upright 3 fixedly installed at the middle of one side of the circular through groove on the upper surface of the chassis 1;

In this embodiment, it should be noted that when soil sampling is required, the ring knife 9 can be inserted into the soil through the circular groove on the chassis 1 for sampling, and in the subsequent process of rotating and cutting the sampled soil sample, the cut soil residues can fall directly into the sampling soil holes, thereby ensuring the use effect of the device.

Please refer to FIG. 1 and FIG. 7 , a sampling device for detecting the compaction degree of roadbed used in highway engineering includes a supporting assembly 2, the supporting assembly 2 includes a bottom supporting bracket 21, a limiting groove 22 is provided on the bottom supporting bracket 21, a first motor 23 is fixedly mounted on the upper surface of the bottom supporting bracket 21, a first gear 24 is fixedly mounted on the output shaft of the first motor 23, a tray 25 is fixedly mounted on the top end of the first motor 23, and a supporting plate 26 is movably mounted on the end of the first motor 23;

In the present embodiment, it should be noted that the bottom support bracket 21 is composed of two long rod parts arranged at an obtuse angle, the limiting groove 22 is located at the end where the two long rods intersect and is opened with the central axis of the first vertical rod 3 as the axis, and the end of the chassis 1 located in the limiting groove 22 is fixedly installed, the first motor 23 is arranged at the upper part of one of the bottom support brackets 21, and a supporting short rod is arranged at the end of the bottom support bracket 21. The tray 25 is fixedly installed on the supporting short rod, and the supporting plate 26 is movably sleeved on the supporting short rod at the end of one of the bottom support brackets 21. A gear ring is arranged on the outside of one end of the supporting plate 26 sleeved on the short rod of the first motor 23, and the first gear 24 is connected to the end of the supporting plate 26. The gear rings are meshed, so that the taken soil sample can be placed on the upper surface of the tray 25 installed with one end of the first motor 23, and then the first motor 23 can be used to drive the first gear 24 to rotate, and the first gear 24 will drive the supporting plate 26 to rotate, so that the cutting assembly 12 can be driven to rotate to cut the outer surface of the sampled soil, and the part of the soil squeezed when the ring knife 9 is pressed down to cut is cut off, thereby ensuring that the cut soil sample will not expand in volume when it is weighed after leaving the ring knife 9, and ensuring that the volume and weight can correspond, thereby eliminating the influence of the squeezed and compressed part of the soil on the subsequent compaction calculation results.

Please refer to FIG. 1 and FIG. 5 , a sampling device for detecting the compaction degree of roadbed used in highway engineering includes a pressing assembly 8, the pressing assembly 8 includes a center plate 81, side bars 82 are evenly fixedly installed on the side of the center plate 81, a pressure sensor 83 is fixedly installed on the lower surface of the side bar 82, and a locking block 84 is fixedly installed on the end of the lower surface of the side bar 82;

In this embodiment, it should be noted that the lower surface of the pressure sensor 83 is arranged flush with the top of the ring knife 9, and the locking block 84 is in a T-shaped structure and is inserted into the ring knife 9 for movement. In this way, during the downward pressing process, when the pressure sensor 83 contacts the soil surface, it will detect the pressure change. Only when the four pressure sensors 83 display the same pressure value at the same time can it be indicated that the ring knife 9 is vertically pressed down to cut into the soil. At this time, the final calculated result of the soil taken out is the accurate compaction result.

Please refer to Figures 8-11, a roadbed compaction detection sampling device for highway engineering, including a cutting assembly 12, the cutting assembly 12 includes an outer shell 1201, a pushing airbag 1202 is installed at one end of the inner part of the outer shell 1201, a push rod 1203 is fixedly installed at one end of the pushing airbag 1202, a first spring 1204 is fixedly installed between the pushing airbag 1202 and the inner part of the outer shell 1201, a sleeve block 1205 is fixedly installed on one side of the outer shell 1201, straight grooves 1206 are opened at the inner bottom and top of the outer shell 1201, a base plate 1207 is fixedly installed at the end of the push rod 1203, and the base plate 1207 is fixedly installed at the end of the push rod 1203. A cutting knife 1208 is fixedly installed in the middle of one side of 07, connecting rods 1209 are movably installed at both ends of the outer shell 1201, and a pressure roller 1210 is movably installed on the connecting rod 1209. A positioning pin 1211 is fixedly installed at the top of the outer shell 1201, and a sleeve rod 1212 is movably sleeved on the positioning pin 1211. The bottom end of the sleeve rod 1212 is fixedly connected to the top of the base plate 1207, and a traction rod 1213 is movably installed at the end of the sleeve rod 1212. An air guide tube 1214 is fixedly installed at the top of the outer shell 1201, and a second spring 1215 is fixedly installed between the connecting rod 1209 and the outside of the outer shell 1201;

In this embodiment, it should be noted that the outer shell 1201 is movably installed at one end of the upper surface of the supporting plate 26, and the two ends of the push airbag 1202 are respectively fixedly connected to the outer shell 1201 and the push rod 1203, and the middle part is a retractable part. The top and bottom ends of the push airbag 1202 are respectively movably arranged in the straight groove 1206 through the positioning pin shaft, and the end of the push rod 1203 passes through the outer shell 1201 to the outside and is fixedly connected to the base plate 1207. The cutting knife 1208 is inclined. The block 1205 is movably sleeved on the lifting assembly 13, the interior of the pressure roller 1210 is hollow and the side is evenly provided with straight air outlet grooves that are set through the hollow part, the top of the pressure roller 1210 is sealed and fixedly connected with the air guide pipe 1214, the air guide pipe 1214 is connected to the inside of the push airbag 1202, and the bottom of the push airbag 1202 is sealed and connected to the air outlet pipe 11, the positioning pin 1211 is located at the end where the cutting knife 1208 is located and is fixedly installed in the middle of the top of the outer shell 1201, and the two One end of the traction rod 1213 is movably connected to the end of the sleeve rod 1212, and the ends of the two traction rods 1213 connected to the sleeve rod 1212 are set with a tip structure pointing in the direction of the ring knife 9. In this way, when it is necessary to cut the soil sample, the air pressure generated by the inflation device 4 can push the airbag 1202 to expand, and then push the cutting knife 1208 to hit the side of the soil sample, and the first gear 24 at the bottom will drive the support plate 26 to rotate. In this way, the cutting knife 1208 is used to cut the soil during the rotation process, and the pressure rollers 1210 on both sides will press against the soil surface to compact the side of the soil after cutting. The airflow introduced synchronously inside can clean up the excess soil on the edge of the sample in time, and can also realize the timely cleaning of the pressure roller 1210 itself, to avoid too much soil sticking to it and affecting subsequent use, to avoid the loosening of the soil side due to cutting and the falling of excess soil residue, to ensure the integrity of the soil after cutting, and thus to ensure the accuracy of subsequent calculation results.

Please refer to FIG. 1 and FIG. 7 , a roadbed compaction detection sampling device for highway engineering includes a jacking assembly 13, the jacking assembly 13 includes a second motor 131 and a positioning pole 132, a second gear 133 is fixedly mounted on the output shaft of the second motor 131, a third gear 134 is meshed on the second gear 133, a screw rod 135 is fixedly mounted on the top of the third gear 134, a stabilizing member 136 is movably mounted on the top of the screw rod 135, the top of the stabilizing member 136 is fixedly connected to the top of the positioning pole 132, and a sleeve plate 137 is fixedly mounted on the bottom of the stabilizing member 136;

In this embodiment, it should be noted that the second gear 133 is meshed with the two third gears 134 at the same time, the screw 135 is threadedly connected to the sleeve block 1205, the positioning pole 132 is slidably connected to the inside of the sleeve block 1205, and the sleeve plate 137 is movably sleeved on the top of the first pole 3. In this way, when it is necessary to raise the height of the cutting assembly 12, the rotation of the second gear 133 can be used to drive the two third gears 134 to rotate, and then drive the sleeve block 1205 to move upward thereon while driving the screw 135 to rotate, so that the cutting assembly 12 can be driven to move upward as a whole, thereby ensuring that the device can complete the side cutting of the entire soil sample.

A method for using a roadbed compaction detection sampling device for highway engineering, the specific steps are as follows:

S1. Rotate the supporting assembly 2 as a whole to a position where the two trays 25 do not overlap with the circular groove on the chassis 1, then unscrew the bolts between the top of the second vertical rod 5 and the cross hanging plate 6, move the cross hanging plate 6 with the hydraulic telescopic rod 7, the pressing assembly 8 and the ring knife 9 downward, until the end of the cross hanging plate 6 is attached to the top of the inflatable device 4, and then tighten the bolts again;

S2, start the hydraulic telescopic rod 7, the hydraulic telescopic rod 7 is extended to drive the ring knife 9 to insert into the soil to take samples, after the sampling is completed, start the hydraulic telescopic rod 7 again to move up, lift the soil sample, and then move the horizontal hanging plate 6 to the top of the second vertical pole 5 again and fix it with bolts;

S3, rotate the bottom support bracket 21 so that the long rod at one end of the support plate 26 is installed to the middle of the circular groove of the chassis 1, and then start the hydraulic telescopic rod 7 to move down until the soil sample is placed on the upper surface of the tray 25, and then start the first motor 23, the first motor 23 drives the first gear 24 to rotate, and the first gear 24 drives the support plate 26 to rotate, so that the cutting assembly 12 is driven to rotate around the sample for cutting, and the hydraulic telescopic rod 7 starts to retract when the cutting assembly 12 needs to move up, and the ring knife 9 is slowly lifted up, and at the same time, the inflation device 4 is also started, and part of the air pressure generated by the inflation device 4 is passed through the jacking The component 13 enters the air guide 14, and then enters the straight air bag 10 to clamp the soil, and the other part enters the pushing air bag 1202 through the jacking component 13, and the pushing air bag 1202 expands to drive the push rod 1203 to move, so that the cutting knife 1208 is pushed to fit the side of the soil, and the sleeve rod 1212 moves under the drive of the base plate 1207, and the traction rods 1213 on both sides drive the pressure rollers 1210 on both sides to rotate and shrink toward the middle, and then the pressure rollers 1210 also fit the soil surface, and compact the soil during the rotation process until the entire soil sample periphery is completely cut;

S4, the inflation device 4 is first closed, and then the hydraulic telescopic rod 7 is started to extend again, so that the ring knife 9 is covered on the outside of the cut soil sample, and then the inflation device 4 is started. The air pressure makes the straight airbag 10 expand to clamp the soil sample, and then the supporting component 2 is rotated to make the other tray 25 rotate to the bottom of the soil sample, and then the hydraulic telescopic rod 7 is closed to complete the removal of the cut soil from one tray 25, and then weigh it, and finally calculate the compaction degree of the soil roadbed according to the volume and weight.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims (10)

1. A roadbed compaction detection sampling device for highway engineering, comprising a chassis (1), characterized in that: a circular through groove is provided on the chassis (1), a first vertical pole (3) is fixedly installed on the top of the chassis (1), a supporting assembly (2) is movably sleeved on the first vertical pole (3), an inflating device (4) is fixedly installed on the top of the first vertical pole (3), a second vertical pole (5) is fixedly installed on the top of the inflating device (4), a cross hanging plate (6) is arranged on the second vertical pole (5), and the cross hanging plate (6) is A hydraulic telescopic rod (7) is fixedly installed at the bottom end of the hydraulic telescopic rod (7), a pressing assembly (8) is fixedly installed at the bottom end of the pressing assembly (8), a ring knife (9) is movably installed at the bottom end of the pressing assembly (8), a straight air bag (10) is embedded in the ring knife (9), an air outlet pipe (11) is fixedly installed on the inflation device (4), a cutting assembly (12) is movably installed on the supporting assembly (2), a lifting assembly (13) is movably installed on the supporting assembly (2), and an air guide (14) is fixedly installed on the ring knife (9); The support assembly (2) comprises a bottom support bracket (21), a limiting groove (22) is provided on the bottom support bracket (21), a first motor (23) is fixedly mounted on the upper surface of the bottom support bracket (21), a first gear (24) is fixedly mounted on the output shaft of the first motor (23), a tray (25) is fixedly mounted on the top end of the first motor (23), and a support plate (26) is movably mounted on the end of the first motor (23); The pressing assembly (8) comprises a center disk (81), side rods (82) are evenly fixedly mounted on the circumferential side of the center disk (81), a pressure sensor (83) is fixedly mounted on the lower surface of the side rods (82), and a locking block (84) is fixedly mounted on the end of the lower surface of the side rods (82); The cutting assembly (12) comprises an outer shell (1201), a pushing airbag (1202) is installed at one end of the inner part of the outer shell (1201), a push rod (1203) is fixedly installed at one end of the pushing airbag (1202), a first spring (1204) is fixedly installed between the pushing airbag (1202) and the inner part of the outer shell (1201), a sleeve block (1205) is fixedly installed at one side of the outer shell (1201), straight grooves (1206) are provided at the inner bottom and top of the outer shell (1201), a base plate (1207) is fixedly installed at the end of the push rod (1203), and a cutting knife (1208) is fixedly installed at the middle part of one side of the base plate (1207) , connecting rods (1209) are movably mounted at both ends of the outer shell (1201), a pressure roller (1210) is movably mounted on the connecting rod (1209), a positioning pin (1211) is fixedly mounted on the top of the outer shell (1201), a sleeve rod (1212) is movably sleeved on the positioning pin (1211), the bottom end of the sleeve rod (1212) is fixedly connected to the top of the base plate (1207), a traction rod (1213) is movably mounted on the end of the sleeve rod (1212), an air guide tube (1214) is fixedly mounted on the top of the outer shell (1201), and a second spring (1215) is fixedly mounted between the connecting rod (1209) and the outside of the outer shell (1201); The lifting assembly (13) comprises a second motor (131) and a positioning pole (132); a second gear (133) is fixedly mounted on the output shaft of the second motor (131); a third gear (134) is meshed with the second gear (133); a screw rod (135) is fixedly mounted on the top end of the third gear (134); a stabilizing member (136) is movably mounted on the top end of the screw rod (135); the top end of the stabilizing member (136) is fixedly connected to the top end of the positioning pole (132); and a sleeve plate (137) is fixedly mounted on the bottom end of the stabilizing member (136). 2. A roadbed compaction detection sampling device for highway engineering according to claim 1, characterized in that: the number of the air outlet pipes (11) is two and they are respectively connected to the cutting assembly (12) and the air guide (14), the air guide (14) is connected to the straight air bag (10), the number of the straight air bags (10) is multiple and each adjacent straight air bag (10) is connected, and the straight air bag (10) is flush with the inner wall of the ring knife (9) in the contracted state. 3. A roadbed compaction detection sampling device for highway engineering according to claim 1, characterized in that: a threaded hole is provided at the top of the inflation device (4), the cross-hanging plate (6) is detachably connected to the top of the second vertical pole (5) by bolts, the cross-hanging plate (6) can be slidably arranged on the second vertical pole (5), and a threaded hole corresponding to the position of the bolt is provided on the cross-hanging plate (6), and the threaded hole also corresponds to the position of the threaded hole on the inflation device (4). 4. A roadbed compaction detection sampling device for highway engineering according to claim 1, characterized in that: the diameter of the circular through groove on the chassis (1) is greater than or equal to the outer diameter of the ring knife (9), and the first vertical pole (3) is fixedly installed in the middle of one side of the circular through groove on the upper surface of the chassis (1). 5. A roadbed compaction detection sampling device for highway engineering according to claim 1, characterized in that: the bottom support bracket (21) is composed of two long rod parts arranged at an obtuse angle, the limit groove (22) is located at the end where the two long rods intersect and is opened with the central axis of the first vertical rod (3) as the axis, the chassis (1) is fixedly installed at one end located in the limit groove (22), the first motor (23) is arranged at the upper part of one of the bottom support brackets (21), a supporting short rod is arranged at the end of the bottom support bracket (21), the tray (25) is fixedly installed on the supporting short rod, the supporting plate (26) is movably sleeved on the supporting short rod at the end of one of the bottom support brackets (21), and a gear ring is arranged on the outside of one end of the supporting plate (26) sleeved on the short rod of the first motor (23), and the first gear (24) is meshed with the gear ring at the end of the supporting plate (26). 6. A roadbed compaction detection sampling device for highway engineering according to claim 1, characterized in that: the lower surface of the pressure sensor (83) is arranged flush with the top of the ring knife (9), and the locking block (84) is T-shaped and is inserted into the ring knife (9) for movement. 7. A roadbed compaction detection sampling device for highway engineering according to claim 1, characterized in that: the outer shell (1201) is movably installed at one end of the upper surface of the supporting plate (26), the two ends of the pushing airbag (1202) are respectively fixedly connected to the outer shell (1201) and the push rod (1203), the middle part is a retractable part, the top and bottom ends of the pushing airbag (1202) are respectively movably arranged in the straight groove (1206) through the positioning pin shaft, the end of the push rod (1203) passes through the outer shell (1201) to the outside and is fixedly connected to the base plate (1207), the cutting knife (1208) is inclined, and the sleeve block (1205) is movably sleeved on the jacking assembly (13). 8. A roadbed compaction detection sampling device for highway engineering according to claim 7, characterized in that: the interior of the pressure roller (1210) is hollow and the side is evenly provided with straight air outlet grooves that are arranged through the hollow part, the top of the pressure roller (1210) is sealed and fixedly connected with the air guide pipe (1214), the air guide pipe (1214) is connected through the inside of the pushing airbag (1202), the bottom end of the pushing airbag (1202) is sealed and connected through the air outlet pipe (11), the positioning pin (1211) is located at the end where the cutting knife (1208) is located and is fixedly installed in the middle of the top of the outer shell (1201), one end of the two traction rods (1213) are movably connected to the end of the sleeve rod (1212), and the ends of the two traction rods (1213) connected to the sleeve rod (1212) are arranged with a tip structure pointing in the direction of the ring knife (9). 9. A roadbed compaction detection sampling device for highway engineering according to claim 1, characterized in that: the second gear (133) is meshed with two third gears (134) at the same time, the screw (135) is threadedly connected to the sleeve block (1205), the positioning pole (132) is slidably connected to the inside of the sleeve block (1205), and the sleeve plate (137) is movably sleeved on the top of the first pole (3). 10. A roadbed compaction detection sampling device for highway engineering according to any one of claims 1 to 9, characterized in that the specific use method is as follows: S1. Rotate the supporting assembly (2) as a whole to a position where the two trays (25) do not overlap with the circular groove on the chassis (1), then unscrew the bolts between the top of the second vertical rod (5) and the cross hanging plate (6), move the cross hanging plate (6) carrying the hydraulic telescopic rod (7), the pressing assembly (8) and the ring knife (9) downward, until the end of the cross hanging plate (6) is attached to the top of the inflatable device (4), and then tighten the bolts again; S2, start the hydraulic telescopic rod (7), the hydraulic telescopic rod (7) is extended to drive the ring knife (9) to be inserted into the soil to take samples, after the sampling is completed, start the hydraulic telescopic rod (7) again to move upward, lift the soil sample, and then move the horizontal hanging plate (6) to the top of the second vertical rod (5) again and fix it with bolts; S3, rotating the bottom support bracket (21) so that the long rod at one end of the support plate (26) is installed to the middle of the circular groove of the chassis (1), and then starting the hydraulic telescopic rod (7) to move downward until the soil sample is placed on the upper surface of the tray (25), and then starting the first motor (23), the first motor (23) drives the first gear (24) to rotate, and the first gear (24) drives the support plate (26) to rotate, thereby driving the cutting assembly (12) to rotate around the sample to cut, and the hydraulic telescopic rod (7) starts to retract when the cutting assembly (12) needs to move upward, slowly lifting the ring knife (9), and at the same time starting the inflation device (4), a part of the air pressure generated by the inflation device (4) is passed through The soil is clamped by the lifting assembly (13) and then enters the air guide (14), and then enters the straight air bag (10), and the other part enters the pushing air bag (1202) through the lifting assembly (13). The pushing air bag (1202) expands and drives the push rod (1203) to move, thereby pushing the cutting knife (1208) to fit the side of the soil. The sleeve rod (1212) moves under the drive of the base plate (1207), and then drives the pressure rollers (1210) on both sides to rotate and shrink toward the middle through the traction rods (1213) on both sides, and then the pressure rollers (1210) also fit the soil surface, and the soil is compacted during the rotation process until the entire periphery of the soil sample is completely cut; S4, the inflation device (4) is first closed, and then the hydraulic telescopic rod (7) is started to extend again, so that the ring knife (9) is placed outside the cut soil sample, and then the inflation device (4) is started, and the air pressure causes the straight air bag (10) to expand and clamp the soil sample, and then the supporting component (2) is rotated to make the other tray (25) rotate to the bottom of the soil sample, and then the hydraulic telescopic rod (7) is closed to complete the removal of the cut soil from one tray (25), and then weigh it, and finally the compaction degree of the soil roadbed is calculated based on the volume and weight.