WO2023236620A1

WO2023236620A1 - Road-soil filled roadbed field sampling device

Info

Publication number: WO2023236620A1
Application number: PCT/CN2023/082636
Authority: WO
Inventors: 林福生; 刘艳林; 高建群; 李�昊; 王剑; 王攀; 田晓旺
Original assignee: 中铁上海工程局集团有限公司; 中铁上海工程局集团第四工程有限公司; 中铁(河南)新川高速公路有限公司
Priority date: 2022-06-06
Filing date: 2023-03-21
Publication date: 2023-12-14

Abstract

The present utility model discloses a road-soil filled roadbed field sampling device, which comprises a box body. A first servo motor is fixedly mounted on the inner wall of the box body by means of a slotted cylindrical screw. A first coupler is fixedly mounted at the bottom end of the first servo motor. A worm is fixedly mounted at the bottom end of the first coupler. A turbine is movably connected to the outer wall of the worm. A rack is movably connected to the other side of the turbine. A motor box is fixedly mounted at the bottom end of the rack. A second servo motor is fixedly mounted at the bottom end of the inner wall of the motor box by means of a slotted screw. In the present utility model, a turbine-worm structure and a gear-rack structure are used to control the vertical movement of a drill bit. The turbine-worm structure has a self-locking function which avoids the downward movement of the turbine due to the self-weight thereof and hence the automatic downward movement of the drill bit. The structure is safe, reliable and accurate, the gear-rack structure has large bearing capacity, the transmission precision is high, and the transmission speed is high.

Description

An on-site sampling device for soil-rock mixed roadbed

Technical field

The utility model relates to the field of highway subgrade detection and sampling equipment, and is specifically an on-site sampling device for soil and rock mixed filling subgrade.

Background technique

The detection of compaction degree is widely used in the quality control of fill subgrade, and the concept of density has been deeply rooted in the hearts of the people. Therefore, during the construction process of stone-filled roadbed, what comes to mind is still to use the density of the roadbed to evaluate the compaction quality. When conducting a density test, it is necessary to excavate test pits for the stone-filled roadbed.

This type of roadbed stones has an embedded structure, and a new balance is quickly formed after the balance is destroyed. The stones are very hard, so sampling is difficult. Nowadays, traditional manual excavation is generally used for sampling. Not only does the whole sampling process take a long time, the water content of the sample is easily lost, but the surrounding wall of the sample is not smooth, the sampling effect is poor, the accuracy is poor, and the unsampled roadbed part is easily damaged, and there are Certain flaws.

Utility model content

The purpose of this utility model is to provide an on-site sampling device for soil-rock mixed roadbed, which can prevent the turbine from moving downward due to its own weight, causing the drill bit to automatically move downward. This structure is safe, reliable and accurate, and the gear and rack structure has large load-bearing capacity and transmission accuracy. The high and fast transmission speed can also throw the material to the spring bag more cleanly and thoroughly through centrifugal force. The mechanical equipment is safe and reliable, has high efficiency and accurate sampling. It can also improve the smoothness of the pit wall after sampling to ensure the sampling effect.

The purpose of this utility model can be achieved through the following technical solutions:

An on-site sampling device for soil and rock mixed roadbed, including a box body. A first servo motor is fixedly installed on the inner wall of the box and fixed by slotted cylindrical screws. The bottom end of the first servo motor is fixedly installed with a A first coupling, a worm is fixedly installed at the bottom end of the first coupling, a turbine is movably connected to the outer wall of the worm, a rack is movably connected to the other side of the turbine, and a rack is fixedly installed at the bottom end of the rack. Toward the motor, a second servo motor is fixedly installed at the bottom end of the inner wall of the motor box and is fixedly connected through slotted screws. A centering ring convex flange coupling is fixedly installed at the output shaft end of the second servo motor. The bottom end of the middle ring convex flange coupling is fixedly installed with a drill bit clamp, the bottom end of the drill bit clamp is fixedly installed with a screw conveyor, the bottom end of the box is fixedly installed with a bottom plate, and a fence is fixedly installed in the middle of the bottom plate.

As a further solution of the present invention: a support plate is fixedly installed at the upper end of the inner wall of the box, and an aligning ball bearing is fixedly installed in the middle of the top surface of the support plate. The aligning ball bearing is movably connected to the worm.

As a further solution of the present invention: a stepped hole is provided in the middle of the bottom surface of the bottom plate, a spring bag is movably installed on the top of the stepped hole, and a drill clamp is fixedly installed on the top of the spring bag, and is fixedly connected by fastening screws. A hole-shielding plate is fixedly installed at the lower end of the inner wall of the spring bag, a hydraulic rod is fixedly installed at the lower end of the outer wall of the spring bag, and a single-piston hydraulic cylinder is fixedly installed at the other end of the hydraulic rod.

As a further solution of the present invention: four support bases are evenly distributed and fixedly installed on the bottom surface of the base plate. The inner wall of the support base is movably connected to the outer wall of the support leg. The outer wall of the support base is movably connected with a safety pin.

As a further solution of the present invention: the bottom surface of the base plate is rectangular and evenly distributed with four universal wheels fixedly installed thereon.

Beneficial effects of this utility model:

1. In this utility model, by turning on the first servo motor, the output shaft of the first servo motor transmits power to the worm through the first coupling. The worm drives the turbine to rotate, and the turbine drives the rack to move up and down. The motor box at the lower end of the rack Push the drill bit to move downward, and the spring bag outside the drill bit moves downward with the drill bit. Finally, the spring bag is completely compressed in the stepped hole. The drill bit moves to the end and the reverse button of the first servo motor is turned on. The screw conveyor moves up, the spring bag resets, and the drill bit moves to the top. A worm gear and a gear rack are used to move the drill bit up and down. The worm gear structure has a self-locking function, which can prevent the turbine from moving downward under its own weight, causing the drill bit to automatically Moving downward, this structure is safe, reliable and accurate. The rack and pinion structure has large load-bearing capacity, high transmission accuracy and fast transmission speed.

2. In this utility model, by opening the single-piston hydraulic cylinder, the hydraulic rod extends, the hole-covering plate covers the stepped hole, the frequency of the second servo motor is adjusted to high frequency, the frequency is maintained for 30 seconds, and the material is thrown toward the spring by centrifugation. The bag is stored, and the second servo motor is turned off. The spring bag storage method uses less water loss than the traditional on-site excavation. Compared with the current cylinder storage method, this method of throwing the material towards the spring bag through centrifugal force is cleaner. Thorough, mechanical equipment, safe and reliable work, high efficiency, accurate sampling.

3. In this utility model, by turning on the second servo motor, the output shaft of the second servo motor drives the drill bit fixture to rotate through the centering ring convex flange coupling. The drill bit fixture clamps the screw feeder to rotate, and the high-speed rotating second servo motor drives the drill bit fixture to rotate. The motor drives the screw conveyor to excavate, improving the smoothness of the pit wall after sampling and ensuring the sampling effect.

Description of the drawings

In order to facilitate understanding by those skilled in the art, the present utility model will be further described below in conjunction with the accompanying drawings.

Figure 1 is a schematic diagram of the overall internal structure of the utility model;

Figure 2 is a schematic cross-sectional view of position A in Figure 1;

Figure 3 is a schematic cross-sectional view at B in Figure 1;

Figure 4 is a schematic cross-sectional view at C in Figure 1;

In the picture: 1. Box; 2. Slotted cylindrical screw; 3. First servo motor; 4. First coupling; 5. Worm; 6. Turbine; 7. Aligning ball bearing; 8. Support plate ; 9. Rack; 10. Motor box; 11. Second servo motor; 12. Slotted screws; 13. Centering ring convex edge coupling; 14. Drill bit fixture; 15. Spring bag; 16. Covering plate; 17. Bottom plate; 18. Universal wheel; 19. Supporting legs; 20. Screw conveyor; 21. Enclosure; 22. Single-piston hydraulic cylinder; 23. Stepped hole; 24. Hydraulic rod; 25. Fastening screw; 26. Support base; 27. Safety pin.

Detailed ways

The technical solution of the present invention will be described clearly and completely below with reference to the embodiments. Obviously, the described embodiments are only some of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts fall within the scope of protection of the present utility model.

As shown in Figure 1-4, an on-site sampling device for earth-rock mixed roadbed includes a box 1. A first servo motor 3 is fixedly installed on the inner wall of the box 1 and is fixed by slotted cylindrical screws 122. The first servo motor A first coupling 4 is fixedly installed at the bottom end of 3. A worm 5 is fixedly installed at the bottom end of the first coupling 4. A turbine 6 is movably connected to the outer wall of the worm 5. A rack 9 is movably connected to the other side of the worm 6. The rack 9 is movably connected to the outer wall of the worm 5. 9 The motor direction is fixedly installed at the bottom end. The second servo motor 11 is fixedly installed at the bottom end of the inner wall of the motor box 10 and is fixedly connected through slotted screws 12. The output shaft end of the second servo motor 11 is fixedly installed with a centering ring convex flange coupling. The shaft device 13, the centering ring convex flange coupling 13 is fixedly installed with a drill clamp 14 at the bottom, the drill clamp 14 is fixedly installed with a screw conveyor 20 at the bottom, the bottom of the box 1 is fixedly installed with a base plate 17, and the middle of the base plate 17 A fence 21 is fixedly installed.

A support plate 8 is fixedly installed on the upper end of the inner wall of the box 1, and an aligning ball bearing 7 is fixedly installed in the middle of the top surface of the support plate 8. The aligning ball bearing 7 is movably connected to the worm 5;

There is a stepped hole 23 in the middle of the bottom surface of the bottom plate 17. A spring bag 15 is movably installed at the top of the stepped hole 23. A drill clamp 14 is fixedly installed at the top of the spring bag 15 and is fixedly connected by a fastening screw 25. The lower end of the inner wall of the spring bag 15 is fixedly installed with a A hydraulic rod 24 is fixedly installed at the lower end of the outer wall of the hole shielding plate 16 and the spring bag 15, and a single-piston hydraulic cylinder 22 is fixedly installed at the other end of the hydraulic rod 24. The control is controlled by controlling the single-piston hydraulic cylinder 22. Closing and opening of the hole shielding plate 16;

Four supporting bases 26 are evenly distributed and fixedly installed on the bottom surface of the base plate 17. The inner wall of the supporting base 26 is movably connected to the outer wall of the supporting leg 19. The outer wall of the supporting base 26 is movably connected with a safety pin 27. The movement between the supporting base 26 and the supporting leg 19 is utilized. Connectivity to adjust the height of the overall structure, and the safety pin 27 can position the adjusted height;

The bottom surface of the bottom plate 17 is rectangular and evenly distributed with four universal wheels 18 fixedly installed thereon. The universal wheels 18 are used to realize movement and steering of the overall structure.

The working principle of this utility model: when in use, connect the external power supply, first push the main body of the sampling device to the roadbed that needs to be sampled by the rolling of the universal wheel 18, pull out the pin installed on the supporting leg 19, and rotate the supporting leg The 19-axis is rotated out to be supported on the roadbed, the safety pin 27 is inserted, the universal wheel 18 is suspended, and the entire plane is supported by the supporting legs 19. When an uneven roadbed needs to be sampled, the four supporting legs 19 can be adjusted to Different heights keep the bottom plate 17 of the box 1 always at a level with the roadbed, making the sampling results more accurate. Then the staff turns on the second servo motor 11, and the output shaft of the second servo motor 11 is connected through the centering ring convex flange. The shaft device 13 drives the drill bit clamp 14 to rotate, the drill bit clamp 14 clamps the screw conveyor 20 to rotate, and turns on the first servo motor 3. The output shaft of the first servo motor 3 transmits power to the worm 5 through the first coupling 4. The worm 5 drives the turbine 6 to rotate, the turbine 6 drives the rack 9 to move up and down, the motor box 10 at the lower end of the rack 9 pushes the drill bit to move downward, the spring bag 15 outside the drill bit moves downward together with the drill bit, and finally the spring bag 15 is completely compressed In the stepped hole 23, the drill bit moves to the end, the reverse button of the first servo motor 3 is turned on, the screw conveyor 20 moves upward, the spring bag 15 is reset, the drill bit moves to the uppermost end, the first servo motor 3 is turned off, and the The single-piston hydraulic cylinder 22, the hydraulic rod 24 extends, the hole shielding plate 16 covers the stepped hole 23, adjust the frequency of the second servo motor 11 to high frequency, maintain the frequency for 30 seconds, and rely on the centrifugal force to throw the material to the spring bag 15 for storage Get up and turn off the second servo motor 11.

The preferred embodiments of the present invention disclosed above are only used to help explain the present invention. Preferred practice The embodiment does not exhaustively describe all the details, nor does it limit the utility model to the described specific implementation. Obviously, many modifications and variations are possible in light of the contents of this specification. This specification selects and specifically describes these embodiments in order to better explain the principles and practical applications of the present invention, so that those skilled in the art can better understand and utilize the present invention. The invention is limited only by the claims and their full scope and equivalents.

Claims

An on-site sampling device for soil and rock mixed roadbed, characterized by comprising a box (1), a first servo motor (3) fixedly installed on the inner wall of the box (1), and a slotted cylindrical screw (2) Fixed, the first coupling (4) is fixedly installed at the bottom of the first servo motor (3), the worm (5) is fixedly installed at the bottom of the first coupling (4), and the worm (5) ) A turbine (6) is movably connected to the outer wall, and a rack (9) is movably connected to the other side of the turbine (6). A motor is fixedly installed at the bottom of the rack (9), and the motor box (10) A second servo motor (11) is fixedly installed at the bottom end of the inner wall and is fixedly connected through slotted screws (12). The output shaft end of the second servo motor (11) is fixedly installed with a centering ring convex flange coupling (13). ), the bottom end of the centering ring convex flange coupling (13) is fixedly installed with a drill clamp (14), the bottom end of the drill clamp (14) is fixedly installed with a screw conveyor (20), the box (1) A bottom plate (17) is fixedly installed at the bottom end, and a fence (21) is fixedly installed in the middle of the bottom plate (17).
The on-site sampling device for earth-rock mixed roadbed according to claim 1, characterized in that a support plate (8) is fixedly installed at the upper end of the inner wall of the box (1), and the support plate (8) is fixedly installed in the middle of the top surface. There is an aligning ball bearing (7), and the aligning ball bearing (7) is movably connected with the worm (5).
The on-site sampling device for earth-rock mixed roadbed according to claim 1, characterized in that a stepped hole (23) is provided in the middle of the bottom surface of the bottom plate (17), and a spring bag (15) is fixedly installed at the top of the stepped hole (23). ), a drill clamp (14) is fixedly installed on the top of the spring bag (15), and is fixedly connected by a fastening screw (25), and a hole shielding plate (16) is fixedly installed on the lower end of the inner wall of the spring bag (15), A hydraulic rod (24) is fixedly installed at the lower end of the outer wall of the spring bag (15), and a single-piston hydraulic cylinder (22) is fixedly installed at the other end of the hydraulic rod (24).
The on-site sampling device for soil-rock mixed roadbed according to claim 1, characterized in that four supporting bases (26) are evenly distributed and fixedly installed on the bottom surface of the bottom plate (17), and the inner wall of the supporting base (26) is in contact with the supporting base. The outer walls of the legs (19) are movably connected, and the outer walls of the support base (26) are movably connected to ensure safety. pin(27).
The on-site sampling device for soil-rock mixed roadbed according to claim 1, characterized in that the bottom surface of the bottom plate (17) is rectangular and evenly distributed with four universal wheels (18) fixedly installed.