Roadbed compaction degree testing sampling apparatus and method for highway engineering

Abstract

A roadbed compaction degree testing sampling apparatus for highway engineering, the apparatus comprising a base (1), wherein a circular through opening is formed in the base (1), and a first vertical rod (3) is fixedly mounted at the top end of the base (1). In the apparatus, rotatable bearing assemblies (2) are arranged, such that after a ring cutter (9) is inserted into the soil and takes out a soil sample, one bearing assembly (2) can hold the bottom of the sample, and using a cutting assembly (12) capable of rotating around the axis of a hydraulic telescopic rod (7), the periphery of the soil sample is rotationally cut, so that after inserting the ring cutter (9), the part of the soil being compressed due to the contact with the ring cutter is cut and separated while the cutting assembly (12) rotates, ensuring that the remaining soil sample is taken out under regular conditions, for performing degree of compaction measurement. Thus, the reliability of the testing sampling apparatus with respect to calculation of sample results is greatly improved.

Description

A roadbed compaction detection sampling device and method for highway engineering Technical Field

[0001] The present invention relates to the technical field of highway engineering, in particular to a roadbed compaction detection and sampling device and method for highway engineering. Background Art

[0002] The roadbed compaction test of highway projects is one of the most critical indicators in the construction process of municipal road subgrade and pavement. 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 of vital importance.

[0003] The compaction detection methods known to the inventors generally include the sand filling method, the ring knife method, the core drilling method, etc. Among them, the ring knife method mainly involves inserting the ring knife into the roadbed soil to be tested 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 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, and the density of the part of the soil in contact with the ring knife will increase, and the corresponding original soil volume will become 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 off during the transfer process after sampling, which will greatly affect the accuracy of the final calculation results.

[0004] To this end, we propose a roadbed compaction detection sampling device and method for highway engineering.

[0005] Summary of the Invention

[0006] 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 background technology.

[0007] The present invention provides the following technical solution: a roadbed compaction detection and sampling device for highway engineering, comprising a chassis, a circular through-groove being provided on the chassis, a first upright pole being fixedly installed on the top of the chassis, a supporting assembly being movably sleeved on the first upright pole, an inflation device being fixedly installed on the top of the first upright pole, a second upright pole being fixedly installed on the top of the inflation device, a cross-hanging plate being provided on the second upright pole, a hydraulic telescopic rod being fixedly installed on the bottom end of the cross-hanging plate, a downward pressing assembly being fixedly installed on the bottom end of the hydraulic telescopic rod, a ring knife being movably installed on the bottom end of the downward pressing assembly, a straight air bag being embedded in the ring knife, an air outlet pipe being fixedly installed on the inflation device, a cutting assembly being movably installed on the supporting assembly, a lifting assembly being movably installed on the supporting assembly, and an air guide being fixedly installed on the ring knife;

[0008] The supporting assembly includes a bottom supporting bracket, a limiting slot 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;

[0009] The pressing assembly comprises a central disk, side rods are evenly fixedly mounted on the circumference of the side surface of the central disk, pressure sensors are fixedly mounted on the lower surfaces of the side rods, and locking blocks are fixedly mounted on the ends of the lower surfaces of the side rods;

[0010] The cam is fixedly provided with a push rod at one end of the push rod, and a first spring is fixedly provided between the push rod and the inner part of the outer shell; a sleeve block is fixedly provided on one side of the outer shell, and a straight groove is provided on the bottom and top of the inner part of the outer shell; a base plate is fixedly provided on the end of the push rod, and a cutting knife is fixedly provided on the middle part of one side of the base plate; a connecting rod is movably provided on the two ends of the outer shell, and a pressure roller is movably provided on the connecting rod; a positioning pin is fixedly provided on the top of the outer shell, and a sleeve rod is movably sleeved on the positioning pin, and the bottom end of the sleeve rod is fixedly connected to the top end of the substrate; a traction rod is movably provided on the end of the sleeve rod, and an air guide tube is fixedly provided on the top of the outer shell, and a second spring is fixedly provided between the connecting rod and the outer part of the outer shell;

[0011] 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 with 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.

[0012] In some embodiments, there are two air outlet pipes, which are respectively connected to the cutting assembly and the air guide, the air guide is connected to the straight air bag, there are multiple straight air bags, and each adjacent straight air bag is connected to each other, and the straight air bag is flush with the inner wall of the ring knife in the contracted state.

[0013] In some embodiments, a threaded hole is provided on 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 set on the second vertical pole. The cross-hanging plate is provided with a threaded hole corresponding to the position of the bolt, and the threaded hole also corresponds to the position of the threaded hole on the inflatable device.

[0014] In some embodiments, 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.

[0015] In some embodiments, the bottom support bracket is composed of two long rod portions 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 on one side located in the limit groove is fixedly installed, the first motor is located on the upper part of one of the bottom support brackets, a supporting short rod is provided at the end of the bottom support bracket, the tray is fixedly installed on the supporting short rod, the support plate is movably sleeved on the supporting short rod at the end of one of the bottom support brackets, a gear ring is provided on the outside of the end of the support plate sleeved on the first motor short rod, and the first gear is engaged with the gear ring at the end of the support plate.

[0016] In some embodiments, the lower surface of the pressure sensor is flush with the top of the ring knife, and the locking block is T-shaped and is inserted into the inner part of the ring knife and movably arranged.

[0017] In some embodiments, 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 fixedly connected to the outer shell and the push rod respectively, the middle part is a retractable part, the top and bottom ends of the pushing airbag are movably set 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 set at an angle, and the sleeve block is movably sleeved on the lifting assembly.

[0018] In some embodiments, 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 of the pressure roller is sealed and fixedly connected to the air guide tube, the air guide tube is connected to the inside of the push airbag, and the bottom end of the push airbag is sealed and connected to the air outlet pipe. The positioning 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 is 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.

[0019] In some embodiments, the second gear is engaged with two third gears at the same time, the screw is threadedly connected to the sleeve block, the positioning pole is slidably connected to the inside of the sleeve block, and the sleeve plate is movably sleeved on the top of the first pole.

[0020] A roadbed compaction detection and sampling device for highway engineering, the specific use method is as follows:

[0021] S1. Rotate the entire support assembly to a position where neither tray overlaps the circular groove on the chassis. Remove the bolts between the top of the second vertical pole and the cross-hanging plate. Lower the cross-hanging plate, carrying the hydraulic telescopic rod, the downward pressure assembly, and the circular cutter, until the end of the cross-hanging plate rests against the top of the inflatable device. Re-tighten the bolts.

[0022] S2. Start the hydraulic telescopic rod. The hydraulic telescopic rod extends and drives the ring knife to insert into the soil to take samples. After the sampling is completed, start the hydraulic telescopic rod again to move upward to lift the soil sample. Then, move the horizontal hanging plate to the top of the second vertical pole again and fix it with bolts.

[0023] S3, rotate 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 start the hydraulic telescopic rod to move down until the soil sample is placed on the upper surface of the tray, and then start 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 retract when the cutting assembly needs to move up, slowly lifting the ring knife upward, and at the same time starting the inflation device, 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 pushing 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 drives the pressure rollers on both sides to rotate and retract toward the middle through the traction rods on both sides, 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;

[0024] S4. The inflation device is first closed, and then the hydraulic telescopic rod is started to extend again, so that the ring knife is placed outside the cut soil sample. Then the inflation device is started, and the air pressure causes the straight airbag to expand and clamp the soil sample. Then the supporting assembly is rotated so that the other tray is rotated to the bottom of the soil sample. Then the hydraulic telescopic rod is closed to complete the removal of the cut soil from one tray, and then it is weighed. Finally, the compaction degree of the soil roadbed is calculated based on the volume and weight.

[0025] The present invention has the following beneficial effects:

[0026] 1. The roadbed compaction detection sampling device and method for highway engineering is provided with a rotatable supporting assembly. After the ring cutter is inserted into the soil and the soil sample is taken out, one of the supporting assemblies can be used to drag the bottom of the sample. Then, with the help of the function of the cutting assembly to rotate around the axis of the hydraulic telescopic rod, the periphery of the soil sample is rotationally cut, thereby achieving the goal 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 assembly. In this way, 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.

[0027] 2. The roadbed compaction detection sampling device and method for highway engineering are provided with an inflation device, and the inflation device is connected to two air outlet pipes, and the two air outlet pipes are respectively connected to the cutting assembly and the air guide member. In this way, the air flow generated by the inflation device can be poured into the air guide member through the air outlet pipe, and then the down-pressing assembly embedded in the ring cutter is inflated and bulged. The bulged down-pressing assembly can ensure the stability of the sample during the process of rotating cutting and moving upward of the cutting assembly, and can use the bulging down-pressing assembly to clamp the sample after the cutting is completed, and then rotate the supporting assembly to make it Place it on another platform for weighing. On the other hand, the airflow entering the cutting assembly can make the airbag expand and push the push rod to move, so that the pressure roller can gather to the middle as the push rod moves. Then, during the rotating cutting process, it is ensured that the pressure roller can always roll on the surface of the soil sample with a certain pressure, thereby realizing the compaction of the side of the soil sample after cutting, avoiding excessive soil debris falling and causing excessive errors in 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 sample compaction calculation result can be obtained. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or related technologies, the following briefly introduces the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative work.

[0029] FIG1 is a schematic diagram of the three-dimensional structure of a roadbed compaction detection and sampling device for highway engineering according to one or more embodiments;

[0030] FIG2 is an enlarged structural diagram of point A in FIG1 of the present invention;

[0031] FIG3 is an enlarged structural diagram of point B in FIG1 of the present invention;

[0032] FIG4 is a schematic diagram of a first partial three-dimensional structure of a roadbed compaction detection and sampling device for highway engineering according to one or more embodiments;

[0033] FIG5 is a schematic diagram of a three-dimensional structure of a press-down assembly according to one or more embodiments;

[0034] FIG6 is a schematic diagram of a second partial three-dimensional structure of a roadbed compaction detection and sampling device for highway engineering according to one or more embodiments;

[0035] FIG7 is a schematic diagram of a three-dimensional structure of a support assembly and a lifting assembly connected according to one or more embodiments;

[0036] 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 one or more embodiments;

[0037] FIG9 is a schematic diagram of a three-dimensional structure of a cutting assembly according to one or more embodiments;

[0038] FIG10 is a schematic perspective partial cross-sectional view of a cutting assembly according to one or more embodiments;

[0039] FIG11 is a schematic cross-sectional view of a cutting assembly according to one or more embodiments.

[0040] In the figure: 1. chassis; 2. supporting assembly; 21. bottom support bracket; 22. limiting groove; 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 air bag; 11. exhaust pipe; 12. cutting assembly; 1201. outer shell; 1202. push air bag; 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

[0041] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0042] The purpose of the present invention is to provide 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 background technology.

[0043] In order to make the above-mentioned objects, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below with reference to the accompanying drawings and specific embodiments.

[0044] Please refer to Figures 1-3. A roadbed compaction detection and sampling device for highway engineering includes a chassis 1, a circular through groove is opened 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 inflation 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 inflation device 4, a cross-hanging plate 6 is provided on the second vertical 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 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;

[0045] Compared with the prior art, the present invention is provided with a rotatable supporting assembly 2. After the ring knife 9 is inserted into the soil to take out the soil sample, one of the supporting assemblies 2 can be used to drag the bottom of the sample, and then the cutting assembly 12 can be used to 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 assembly 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 the inflation device 4 is connected to two air outlet pipes 11, and the two air outlet pipes 1 1 is connected with the cutting assembly 12 and the air guide 14 respectively, so that the air flow generated by the inflation device 4 can be poured into the air guide 14 through the air outlet pipe 11, and then the down-pressing assembly 8 embedded in the ring knife 9 is inflated and bulged, and the bulged down-pressing assembly 8 can ensure the stability of the sample during the process of rotating cutting and moving up of the cutting assembly 12, and can use the down-pressing assembly 8 to bulge and clamp the sample after the cutting is completed, and then rotate the supporting assembly 2 to place it on another platform for weighing. On the other hand, the air flow enters the cutting assembly 12, which 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 as the push rod 1203 moves. Then, it is ensured that during the rotary cutting process, the pressing roller 1210 can always roll on the surface of the soil sample with a certain pressure, thereby achieving compaction of the side of the soil sample after cutting, avoiding excessive soil debris falling and causing excessive errors in subsequent weighing results. Since the volume is cut by the same cutting component 12 with the same radius, the volume value is the same, so a very accurate sample compaction calculation result can be obtained.

[0046] Referring to Figures 1-6, a sampling device for detecting roadbed compaction for highway engineering includes two air outlet pipes 11, each of which is connected to a cutting assembly 12 and an air guide 14. The air guide 14 is connected to a straight air bag 10. There are multiple straight air bags 10, and every two adjacent straight air bags 10 are connected. When the straight air bags 10 are in a retracted state, they are flush with the inner wall of the ring cutter 9.

[0047] 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 avoiding the soil sample from rotating during the rotating cutting process of the cutting component 12, which may cause the cutting effect to deteriorate. At the same time, after the cutting is completed, the soil sample can be lifted by using the clamping effect of the expanded straight airbag 10 to facilitate subsequent weighing.

[0048] Referring to FIG1 , a sampling device for detecting roadbed compaction for highway engineering projects includes an inflator 4 having a threaded hole formed at the top thereof, a cross-hanging plate 6 detachably connected to the top of a second upright 5 by bolts, and a slideable arrangement of the cross-hanging plate 6 on the second upright 5. The cross-hanging plate 6 has threaded holes formed therein corresponding to the positions of the bolts, and the threaded holes also correspond to the positions of the threaded holes on the inflator 4.

[0049] 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.

[0050] Referring to FIG1 , a sampling device for detecting roadbed compaction for highway engineering projects includes 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 mounted in the middle of one side of the circular through-groove on the upper surface of the chassis 1 ;

[0051] In this embodiment, it should be noted that when soil sampling is required, the ring knife 9 can be used to pass through the circular groove on the chassis 1 and insert into the soil for sampling, and in the subsequent process of rotating and cutting the sampled soil sample, the cut soil residue falls directly into the sampling soil hole, thereby ensuring the use effect of the device.

[0052] Referring to Figures 1 and 7 , a roadbed compaction detection and sampling device for highway engineering includes a support assembly 2, the support assembly 2 including a bottom support bracket 21, a limiting slot 22 defined in the bottom support bracket 21, a first motor 23 fixedly mounted on the upper surface of the bottom support bracket 21, a first gear 24 fixedly mounted on the output shaft of the first motor 23, a tray 25 fixedly mounted on the top end of the first motor 23, and a support plate 26 movably mounted on the end of the first motor 23;

[0053] In this 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. The end of the chassis 1 on one side in the limiting groove 22 is fixedly installed, and the first motor 23 is arranged on the upper part of one of the bottom support brackets 21. A supporting short rod is provided 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. A gear ring is provided on the outside of one end of the supporting plate 26 sleeved on the short rod of the first motor 23. The first gear 24 and the end of the supporting plate 26 The gear ring is 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 and cut is cut off, thereby ensuring that the volume of the cut soil sample will not expand 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.

[0054] Referring to Figures 1 and 5 , a roadbed compaction detection and sampling device for highway engineering includes a pressing assembly 8, which includes a center plate 81. Side rods 82 are evenly fixedly mounted on the sides of the center plate 81 along the circumference. Pressure sensors 83 are fixedly mounted on the lower surfaces of the side rods 82. Locking blocks 84 are fixedly mounted on the ends of the lower surfaces of the side rods 82.

[0055] In this embodiment, it should be noted that the lower surface of the pressure sensor 83 is set 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 internal movable setting of the ring knife 9. 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.

[0056] Please refer to Figures 8-11. A roadbed compaction detection and sampling device for highway engineering includes a cutting assembly 12, which includes an outer shell 1201. A pushing airbag 1202 is installed at one end of the inner 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 shell 1201. A sleeve block 1205 is fixedly installed on one side of the outer shell 1201. Straight grooves 1206 are provided at the bottom and top of the inner shell 1201. A 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, and connecting rods 1209 are movably installed at both ends of the outer shell 1201. A pressure roller 1210 is movably installed on the connecting rod 1209. A positioning pin 1211 is fixedly installed on 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 on the end of the sleeve rod 1212. An air guide tube 1214 is fixedly installed on 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.

[0057] 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 fixedly connected to the outer shell 1201 and the push rod 1203 respectively. The middle part is a retractable part, and the top and bottom ends of the push airbag 1202 are movably arranged in the straight groove 1206 respectively 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 set at an angle, and the sleeve The block 1205 is movably sleeved on the jacking assembly 13. The interior of the pressure roller 1210 is hollow and the side is evenly provided with an air outlet straight groove that is 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 air bag 1202. The bottom end of the push air bag 1202 is sealed and connected to the air outlet pipe 11. The positioning pin 1211 is located at the end where the cutting blade 1208 is located and is fixedly installed in the middle of the top of the outer shell 1201. The two The ends of one end of the traction rod 1213 are movably connected to the ends of the sleeve rod 1212, and the ends of the two traction rods 1213 connected to the sleeve rod 1212 are arranged in a pointed 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 entering the interior at the same time 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, and avoid the loosening of the soil side due to cutting and the falling of excess soil residue, thereby ensuring the integrity of the soil after cutting, and thus ensuring the accuracy of subsequent calculation results.

[0058] Referring to Figures 1 and 7 , a roadbed compaction detection and sampling device for highway engineering includes a jacking assembly 13, which includes a second motor 131 and a positioning rod 132. A second gear 133 is fixedly mounted on the output shaft of the second motor 131, and a third gear 134 is meshed with the second gear 133. A screw 135 is fixedly mounted on the top of the third gear 134, and a stabilizing member 136 is movably mounted on the top of the screw 135. The top of the stabilizing member 136 is fixedly connected to the top of the positioning rod 132, and the bottom of the stabilizing member 136 is fixedly mounted.

[0059] In this embodiment, it should be noted that the second gear 133 is engaged with the two third gears 134 at the same time, the screw 135 is threadedly connected to the sleeve block 1205, the positioning vertical rod 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 vertical rod 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, while driving the screw 135 to rotate, the sleeve block 1205 is driven to move upward on the screw 135, 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.

[0060] A method for using a roadbed compaction detection sampling device for highway engineering, the specific steps are as follows:

[0061] S1. Rotate the supporting assembly 2 as a whole to a position where neither of the two trays 25 overlaps with the circular groove on the chassis 1. Then, remove the bolts between the top of the second vertical pole 5 and the cross-hanging plate 6. Move the cross-hanging plate 6 downward with the hydraulic telescopic rod 7, the pressing assembly 8, and the circular knife 9 until the end of the cross-hanging plate 6 is in contact with the top of the inflatable device 4, and then tighten the bolts again.

[0062] 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, the hydraulic telescopic rod 7 is started again to move upward to lift the soil sample. Then, the horizontal hanging plate 6 is moved to the top of the second vertical pole 5 again and fixed with bolts;

[0063] S3, rotate the bottom support bracket 21 so that the long rod at one end of the supporting 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 supporting plate 26 to rotate, thereby driving the cutting assembly 12 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, slowly lifting the ring knife 9 upwards, and at the same time starting the inflation device 4, and part of the air pressure generated by the inflation device 4 passes through the top The lifting component 13 enters the air guide 14 and then enters the straight air bag 10 to clamp the soil. The other part enters the pushing air bag 1202 through the jacking component 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 drives the pressure rollers 1210 on both sides to rotate and shrink toward the middle through the traction rods 1213 on both sides. Then, the pressure rollers 1210 also fit the soil surface, compacting the soil during the rotation process until the entire periphery of the soil sample is completely cut.

[0064] 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 put on the outside of the cut soil sample. Then the inflation device 4 is started, and the air pressure causes the straight airbag 10 to expand and clamp the soil sample. Then the supporting component 2 is rotated so that the other tray 25 is rotated to the bottom of the soil sample. Then the hydraulic telescopic rod 7 is closed to complete the removal of the cut soil from one tray 25, and then weigh it. Finally, the compaction degree of the soil roadbed is calculated based on the volume and weight.

[0065] The present invention uses specific examples to illustrate the principles and implementation methods of the present invention. The above examples are only intended to help understand the method and core concept of the present invention. At the same time, those skilled in the art will find that the specific implementation methods and application scopes may vary based on the concept of the present invention. In summary, the contents of this specification should not be construed as limiting the present invention.

Claims

1. A roadbed compaction detection sampling device for highway engineering, comprising a chassis (1), characterized in that: The chassis (1) is provided with a circular through groove, a first vertical pole (3) is fixedly mounted 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 mounted on the top of the first vertical pole (3), a second vertical pole (5) is fixedly mounted on the top of the inflating device (4), a cross hanging plate (6) is arranged on the second vertical pole (5), a hydraulic telescopic rod (7) is fixedly mounted on the bottom of the cross hanging plate (6), and the A pressing assembly (8) is fixedly mounted on the bottom end of the hydraulic telescopic rod (7), a ring knife (9) is movably mounted on 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 mounted on the inflation device (4), a cutting assembly (12) is movably mounted on the supporting assembly (2), a lifting assembly (13) is movably mounted on the supporting assembly (2), and an air guide (14) is fixedly mounted 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 on both ends of the outer shell (1201), and 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), 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 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); and a second gear (133) is meshed on the second gear (133). A third gear (134) is provided, 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 upright rod (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 every two adjacent straight air bags (10) are connected; the straight air bags (10) are flush with the inner wall of the ring knife (9) in a contracted state.

3. The sampling device for detecting the compactness of roadbed used in highway engineering according to claim 1, characterized in that: A threaded hole is provided at the top of the inflatable device (4); the cross-hanging plate (6) is detachably connected to the top of the second vertical pole (5) via 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 also corresponds to the position of the threaded hole on the inflatable device (4).

4. The sampling device for detecting roadbed compaction 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 rod (3) is fixedly installed in the middle of one side of the circular through groove on the upper surface of the chassis (1).

5. The sampling device for detecting roadbed compaction for highway engineering according to claim 1, characterized in that: The bottom support bracket (21) has 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, the bottom plate (1) is fixedly installed at one end located in the limiting 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), 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 in a T-shaped structure and is inserted into the inner movably arranged of the ring knife (9).

7. The sampling device for detecting roadbed compaction for highway engineering according to claim 1, characterized in that: The outer shell (1201) is movably installed on one end of the upper surface of the support 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 lifting 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 surfaces are evenly provided with straight air outlet grooves that are arranged through the hollow part. The top end of the pressure roller (1210) is sealed and fixedly connected to the air guide tube (1214). The air guide tube (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). The ends of 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. The sampling device for detecting roadbed compaction for highway engineering according to claim 1, characterized in that: The second gear (133) is meshed with the two third gears (134) at the same time, the screw rod (135) is threadedly connected in the sleeve block (1205), the positioning vertical rod (132) is slidably connected inside the sleeve block (1205), and the sleeve plate (137) is movably sleeved on the top end of the first vertical rod (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 usage 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 in contact with the top of the inflatable device (4), and then tighten the bolts again; S2, starting 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, the hydraulic telescopic rod (7) is started again to move upward to lift the soil sample, and then the horizontal hanging plate (6) is moved again to the top of the second vertical rod (5) and fixed 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 hydraulic telescopic rod (7) is moved downward until the soil sample is placed on the upper surface of the tray (25), and the first motor (23) is started. 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. When the cutting assembly (12) needs to move upward, the hydraulic telescopic rod (7) starts to retract, slowly lifting the ring knife (9) upward, and at the same time, the inflation device (4) is also started. A part of the air pressure generated by the inflation device (4) enters the lifting assembly (13) The air guide (14) and then enter the straight air bag (10) to clamp the soil, while 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, so that the pressure rollers (1210) also fit the soil surface, and compact the soil 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. The air pressure causes the straight airbag (10) to expand and clamp the soil sample, and then the supporting component (2) is rotated so that the other tray (25) is rotated 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 of the trays (25), and then weigh it, and finally the compaction degree of the soil roadbed is calculated based on the volume and weight.

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