Pavement and roadbed performance detection device

Abstract

The utility model discloses a pavement and roadbed performance detection device, which relates to the field of road detection and comprises a cart, universal wheels are arranged below the cart, a control box is arranged above the cart, and settlement detection components are arranged on the left side and the right side of the cart. According to the utility model, the settlement detection assembly is arranged, a universal wheel and a cart are used for moving the detection device to a designated position, a locking screw rod is loosened and a vertical plate is put down, so that the universal wheel and a spherical roller are contacted with a road surface, then the locking screw rod is screwed and inserted into a thread groove to fix the vertical plate, the cart is pushed and a motor is started, and the motor drives a reciprocating screw rod to rotate; when the trolley moves forwards, the transverse settlement degree change of the road surface is fed back in real time, the spherical rolling wheel descends in the case of settlement, the spring extends, the pressure of the pressure sensor is reduced, data are fed back to the control box, the control box judges whether the road surface settlement exceeds a normal range or not according to a preset threshold value, and therefore road surface settlement detection is conducted.

Description

Technical Field

[0001] The utility model relates to the technical field of road detection, in particular to a road surface and subgrade performance detection device. Background Art

[0002] The roadbed is the foundation of the road surface and an important part of the highway structure. It bears the deadweight of the soil and the weight of the road surface structure, as well as the traffic load transmitted from the road surface. Under the influence of traffic load and environmental factors, the roadbed will suffer from local sinking, expansion, and mudslide. To ensure that the roadbed is maintained in good service condition, it is necessary to inspect the roadbed defects and usage status so that roadbed defects can be discovered in time and appropriate maintenance measures can be taken. The roadbed inspection includes width, compaction degree, centerline position, roadbed top surface elevation, cross slope, flatness, slope rate, etc.

[0003] A search revealed a Chinese utility model patent with authorization publication number CN214200072U, which describes a road surface and subgrade performance testing device. The device comprises a cart and a control box. Multiple sleeves are fixedly connected to the bottom of the cart, each of which is internally secured with a limit ring. A pressure sensor is fixedly connected to the bottom of the limit ring, and a connecting rod is slidably connected within the limit ring. The connecting rod is fitted with a spring. The device facilitates measurement of road surface and subgrade settlement, flatness, and slope angle, increasing its functionality. It features a simple structure, easy operation, and storability, reducing footprint.

[0004] However, the device only detects the inclination data of a single section of road by driving the No. 1 roller when the cart moves, and cannot reflect the changes in the lateral settlement of the road surface. Moreover, the No. 1 roller serves as both a detection unit and a walking unit. As long as the cart moves, the No. 1 roller as the detection unit will contact the ground, which greatly increases the frequency of use of the detection unit. In view of this, the present application proposes a road surface and subgrade performance detection device based on the above technical problems. Utility Model Content

[0005] The purpose of the utility model is to solve the shortcomings of the prior art and to propose a road surface and subgrade performance detection device.

[0006] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0007] A road surface and subgrade performance detection device comprises a cart, a universal wheel is provided below the cart, a control box is provided above the cart, and settlement detection components are provided on both sides of the cart;

[0008] The cam is fixedly mounted on the upper surface of the U-shaped frame, and a spring is fixedly mounted on the lower surface of the U-shaped frame to adjust the angle of rotation of the U-shaped frame. A rotating shaft is rotatably installed between the inner wall of the U-shaped frame, and a vertical plate is fixedly mounted on the outside of the rotating shaft, and locking screws are rotatably installed on both sides of the U-shaped frame. A threaded groove matching the locking screw is provided on the vertical plate. A mounting cavity is provided inside the vertical plate, and a motor is fixedly mounted on the mounting cavity near one side of the U-shaped frame. A reciprocating screw is threadedly connected to the movable plate on the output end of the motor, and a connecting cylinder is fixedly mounted on the bottom end of the movable plate, and a connecting rod is slidably mounted inside the connecting cylinder, and a spherical roller is fixedly mounted on the bottom end of the connecting rod, and a pressure sensor is fixedly mounted on the lower surface of the connecting cylinder, and a spring is fixedly mounted between the pressure sensor and the spherical roller, and the pressure sensor is electrically connected to the control box. A flatness detection assembly is provided on one side of the vertical plate.

[0009] Furthermore, the flatness detection component includes a digital inclinometer fixedly mounted on the side of the vertical plate, the digital inclinometer is electrically connected to the control box, a fixed block is fixedly mounted on one side of the connecting tube, a long screw is rotatably mounted on the fixed block, and one end of the long screw abuts against the spherical roller.

[0010] Furthermore, a first hook is fixedly installed on one side of the vertical plate, and a second hook is fixedly installed on one side of the control box, and an insertion rod is provided between the first hook and the second hook.

[0011] Furthermore, the angle adjustment assembly includes a fixed frame fixedly mounted on the side of the cart, a worm is rotatably mounted between the inner walls of the fixed frame, a handwheel is fixedly mounted on the top of the worm, a rotating column is rotatably mounted between the U-shaped frame and the cart, a worm wheel is fixedly mounted on the outside of the rotating column, and the worm wheel is meshingly connected with the worm.

[0012] Furthermore, slide rails are fixedly installed on the left and right sides of the inner wall of the installation cavity, and sliders are slidably installed on the slide rails, and the sliders are fixedly connected to the movable plate.

[0013] Furthermore, a through hole for the movable plate to move is provided on one side of the vertical plate.

[0014] Furthermore, a push block is fixedly mounted on one side of the spherical roller, and the cross section of the push block is an isosceles triangle.

[0015] Furthermore, a limit block is fixedly installed on the top end of the connecting rod, and a limit ring is fixedly installed on the bottom end of the connecting cylinder.

[0016] The beneficial effects of the utility model are:

[0017] 1. The utility model sets a settlement detection component, uses the universal wheel and the cart to move the detection device to the specified position, loosens the locking screw, and slowly lowers the vertical plate. At this time, the universal wheel and the spherical roller are in contact with the road surface, and then the locking screw is tightened again. The locking screw is inserted into the threaded groove, thereby fixing the vertical plate so that it will not rotate. While pushing the cart forward, the motor is started, and the motor drives the reciprocating screw to rotate. The movable plate performs horizontal reciprocating movement under the drive of the reciprocating screw. As the cart moves forward, the change in the lateral settlement of the road surface can be fed back in real time. The spherical roller will drop when encountering a settled road surface. At this time, the spring will extend, and the pressure on the pressure sensor will decrease. The pressure sensor will feed back the data to the control box. The control box will judge whether the road surface settlement exceeds the normal range according to the preset threshold value, thereby performing road surface settlement detection.

[0018] 2. The utility model sets a flatness detection component. When the locking screw is loosened, the vertical plate can rotate around the axis of the rotation shaft, and the long screw is tightened. The spherical roller will not telescope or move along with the uneven structure of the road surface under the restriction of the long screw, so as to avoid affecting the accuracy of the road surface flatness detection. The cart continues to be pushed. When the road surface is uneven, the vertical plate rotates, and the digital inclinometer records the angle of rotation of the vertical plate and transmits the data to the control box. The control box performs real-time evaluation of the flatness of the road surface.

[0019] 3. The utility model sets an angle adjustment component and a digital inclinometer, rotates the handwheel, and the handwheel drives the worm to rotate, and then drives the worm wheel and the rotating column to rotate, thereby realizing a 180-degree flip of the U-shaped frame. At this time, the non-spherical roller mounting surface of the vertical plate is located at the bottom, and then the surface is placed against the slope surface, and the angle of the slope surface can be read by the digital inclinometer. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the vertical plate storage of a road surface and subgrade performance testing device proposed by the present utility model;

[0021] Figure 2 This is a schematic diagram of the expansion of the vertical plates of a road surface and subgrade performance testing device proposed by the present utility model;

[0022] Figure 3 This is a schematic diagram of a settlement detection component of a road surface and subgrade performance detection device proposed in the present utility model;

[0023] Figure 4 This is a schematic cross-sectional view of a vertical plate of a road surface and subgrade performance testing device proposed by the present utility model;

[0024] Figure 5 This is a cross-sectional schematic diagram of a connecting tube of a pavement and subgrade performance testing device proposed by the present utility model;

[0025] Figure 6This is a schematic diagram of the first hook of a pavement and subgrade performance detection device proposed in the utility model.

[0026] In the figure: 1. Cart; 2. Universal wheel; 3. Control box; 4. U-shaped frame; 5. Rotating shaft; 6. Vertical plate; 7. Locking screw; 8. Threaded groove; 9. Mounting cavity; 10. Motor; 11. Reciprocating screw; 12. Moving plate; 13. Connecting cylinder; 14. Connecting rod; 15. Spherical roller; 16. Pressure sensor; 17. Spring; 18. Digital inclinometer; 19. Fixed block; 20. Long screw; 21. First hook; 22. Second hook; 23. Insert rod; 24. Fixed frame; 25. Worm; 26. Handwheel; 27. Rotating column; 28. Worm gear; 29. ​​Slide rail; 30. Slider; 31. Push block; 32. Limit block; 33. Limit ring. DETAILED DESCRIPTION

[0027] The technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments.

[0028] Reference Figure 1-5 A road surface subgrade performance detection device includes a cart 1, a universal wheel 2 is provided below the cart 1, a control box 3 is provided above the cart 1, and settlement detection components are provided on both sides of the cart 1;

[0029] The settlement detection component includes a U-shaped frame 4, an angle adjustment component for adjusting the rotation of the U-shaped frame 4 is provided between the U-shaped frame 4 and the cart 1, a rotating shaft 5 is rotatably installed between the inner walls of the U-shaped frame 4, a vertical plate 6 is fixedly installed on the outside of the rotating shaft 5, locking screws 7 are rotatably installed on both sides of the U-shaped frame 4, a threaded groove 8 matching the locking screw 7 is provided on the vertical plate 6, an installation cavity 9 is provided inside the vertical plate 6, a motor 10 is fixedly installed on the side of the installation cavity 9 close to the U-shaped frame 4, and the output end of the motor 10 is fixedly installed A reciprocating screw 11 is installed, and a movable plate 12 is threadedly connected to the reciprocating screw 11. A connecting cylinder 13 is fixedly installed at the bottom end of the movable plate 12. A connecting rod 14 is slidably installed inside the connecting cylinder 13. A spherical roller 15 is fixedly installed at the bottom end of the connecting rod 14. A pressure sensor 16 is fixedly installed on the lower surface of the connecting cylinder 13. A spring 17 is fixedly installed between the pressure sensor 16 and the spherical roller 15. The pressure sensor 16 is electrically connected to the control box 3. A flatness detection component is provided on one side of the vertical plate 6;

[0030] The detection device is moved to the specified position by using the universal wheel 2 and the trolley 1, the locking screw 7 is loosened, and the vertical plate 6 is slowly lowered. At this time, the universal wheel 2 and the spherical roller 15 are in contact with the road surface at the same time, and then the locking screw 7 is tightened again. The locking screw 7 is inserted into the threaded groove 8, thereby fixing the vertical plate 6 so that it will not rotate. While pushing the trolley 1 forward, the motor 10 is started, and the motor 10 drives the reciprocating screw 11 to rotate. The movable plate 12 is driven by the reciprocating screw 11 to make a horizontal reciprocating movement. As the trolley 1 moves forward, the change in the lateral settlement of the road surface can be fed back in real time. The spherical roller 15 will drop when encountering a settled road surface. At this time, the spring 17 is extended, and the pressure on the pressure sensor 16 is reduced. The pressure sensor 16 feeds back the data to the control box 3. The control box 3 judges whether the road surface settlement exceeds the normal range according to the preset threshold value, thereby performing road surface settlement detection.

[0031] Reference Figure 2 、 Figure 5 Specifically, the flatness detection assembly includes a digital inclinometer 18 fixedly mounted on the side of the vertical plate 6, and the digital inclinometer 18 is electrically connected to the control box 3. A fixing block 19 is fixedly mounted on one side of the connecting tube 13, and a long screw 20 is rotatably mounted on the fixing block 19, and one end of the long screw 20 abuts against the spherical roller 15;

[0032] When detecting the flatness of the road surface, loosen the locking screw 7 again, and the vertical plate 6 can now rotate around the axis of the rotating shaft 5, and tighten the long screw 20. Under the restriction of the long screw 20, the spherical roller 15 will not telescope or move along with the uneven structure of the road surface, so as to avoid affecting the accuracy of the road surface flatness detection. Continue to push the cart 1. When the road surface is uneven, the vertical plate 6 will rotate, and the digital inclinometer 18 will record the rotation angle of the vertical plate 6 and transmit the data to the control box 3. The control box 3 will perform real-time evaluation of the flatness of the road surface.

[0033] Reference Figure 1 、 Figure 6 Specifically: a first hook 21 is fixedly installed on one side of the vertical plate 6, and a second hook 22 is fixedly installed on one side of the control box 3. An insertion rod 23 is provided between the first hook 21 and the second hook 22. After the detection is completed, the vertical plate 6 is rotated to the initial position, and the insertion rod 23 is inserted into the first hook 21 and the second hook 22 to reduce the footprint of the device.

[0034] Reference Figure 2-4 Specifically: the angle adjustment assembly includes a fixed frame 24 fixedly mounted on the side of the cart 1, a worm 25 is rotatably mounted between the inner walls of the fixed frame 24, a handwheel 26 is fixedly mounted on the top of the worm 25, a rotating column 27 is rotatably mounted between the U-shaped frame 4 and the cart 1, a worm gear 28 is fixedly mounted on the outside of the rotating column 27, and the worm gear 28 is meshed with the worm 25;

[0035] When detecting the slope angle, the hand wheel 26 is rotated, and the hand wheel 26 drives the worm 25 to rotate, and then drives the worm wheel 28 and the rotating column 27 to rotate, so as to realize a 180-degree flip of the U-shaped frame 4. At this time, the mounting surface of the non-spherical roller 15 of the vertical plate 6 is located at the bottom, and then the surface is placed on the slope, and the angle of the slope can be read by the digital inclinometer 18.

[0036] Reference Figure 4-5 Specifically, slide rails 29 are fixedly installed on the left and right sides of the inner wall of the installation cavity 9 , and sliders 30 are slidably installed on the slide rails 29 , and the sliders 30 are fixedly connected to the movable plate 12 .

[0037] Reference Figure 3 Specifically: a through hole for the movable plate 12 to move is provided on one side of the vertical plate 6.

[0038] Reference Figure 3 、 Figure 5 Specifically: a push block 31 is fixedly installed on one side of the spherical roller 15. The cross section of the push block 31 is an isosceles triangle. When the spherical roller 15 moves, the push block 31 can push the obstacle to both sides of the spherical roller 15 to avoid affecting the accuracy of the detection result.

[0039] Reference Figure 5 Specifically: a limit block 32 is fixedly installed on the top end of the connecting rod 14, and a limit ring 33 is fixedly installed on the bottom end of the connecting tube 13 to prevent the connecting rod 14 from being separated from the connecting tube 13.

[0040] Working principle: Use the universal wheel 2 and the cart 1 to move the detection device to the specified position, loosen the locking screw 7, and slowly lower the vertical plate 6. At this time, the universal wheel 2 and the spherical roller 15 are in contact with the road surface at the same time, and then tighten the locking screw 7 again. The locking screw 7 is inserted into the threaded groove 8, thereby fixing the vertical plate 6 so that it will not rotate. While pushing the cart 1 forward, start the motor 10, and the motor 10 drives the reciprocating screw 11 to rotate. The movable plate 12 moves back and forth laterally under the drive of the reciprocating screw 11. As the cart 1 moves forward, the changes in the lateral settlement of the road surface can be fed back in real time. The spherical roller 15 will drop when encountering a settled road surface. At this time, the spring 17 will extend, and the pressure on the pressure sensor 16 will decrease. The pressure sensor 16 will feed back the data to the control box 3. The control box 3 will judge whether the road surface settlement exceeds the normal range according to the preset threshold value, thereby performing road surface settlement detection;

[0041] When testing the road surface flatness, the locking screw 7 is loosened again, and the vertical plate 6 can now rotate around the axis of the rotating shaft 5. The long screw 20 is tightened. The spherical roller 15 will not telescope or move along with the uneven structure of the road surface under the restriction of the long screw 20, so as to avoid affecting the accuracy of the road surface flatness test. The cart 1 is pushed continuously. When the road surface is uneven, the vertical plate 6 rotates, and the digital inclinometer 18 records the angle of rotation of the vertical plate 6 and transmits the data to the control box 3, which performs a real-time evaluation of the road surface flatness.

[0042] When detecting the slope angle, the hand wheel 26 is rotated, which drives the worm 25 to rotate, and then drives the worm gear 28 and the rotating column 27 to rotate, so that the U-shaped frame 4 is turned 180 degrees. At this time, the mounting surface of the non-spherical roller 15 of the riser 6 is located at the bottom. Then, the surface of the riser 6 is placed against the slope, and the angle of the slope can be read by the digital inclinometer 18.

[0043] After the detection is completed, the vertical plate 6 is rotated to the initial position, and the insertion rod 23 is inserted into the first hook 21 and the second hook 22 to reduce the footprint of the device.

[0044] The above is only a preferred specific implementation method of the present invention, but the protection scope of the present invention is not limited to this. Any technician familiar with the technical field within the technical scope disclosed by the present invention can make equivalent replacements or changes based on the technical solution and utility model concept of the present invention, which should be covered by the protection scope of the present invention.

[0045] In the description of this application, it should be understood that the terms "center", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", etc., indicating the orientation or position relationship, are based on the orientation or position relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on this application.

Claims

1. A road surface and subgrade performance detection device, characterized in that: It comprises a cart (1), a universal wheel (2) is provided below the cart (1), a control box (3) is provided above the cart (1), and settlement detection components are provided on both the left and right sides of the cart (1); The settlement detection component comprises a U-shaped frame (4), an angle adjustment component for adjusting the rotation of the U-shaped frame (4) is provided between the U-shaped frame (4) and the trolley (1), a rotating shaft (5) is rotatably installed between the inner walls of the U-shaped frame (4), a vertical plate (6) is fixedly installed on the outside of the rotating shaft (5), locking screws (7) are rotatably installed on both sides of the U-shaped frame (4), a thread groove (8) matching the locking screw (7) is provided on the vertical plate (6), an installation cavity (9) is provided inside the vertical plate (6), a motor (10) is fixedly installed on the side of the installation cavity (9) close to the U-shaped frame (4), and the output end of the motor (10) is fixedly connected to the mounting hole (9). A reciprocating screw (11) is fixedly installed, a movable plate (12) is threadedly connected to the reciprocating screw (11), a connecting tube (13) is fixedly installed at the bottom end of the movable plate (12), a connecting rod (14) is slidably installed inside the connecting tube (13), a spherical roller (15) is fixedly installed at the bottom end of the connecting rod (14), a pressure sensor (16) is fixedly installed on the lower surface of the connecting tube (13), a spring (17) is fixedly installed between the pressure sensor (16) and the spherical roller (15), the pressure sensor (16) is electrically connected to the control box (3), and a flatness detection component is provided on one side of the vertical plate (6).

2. A road surface and subgrade performance detection device according to claim 1, characterized in that: The flatness detection assembly includes a digital inclinometer (18) fixedly mounted on the side of the vertical plate (6), the digital inclinometer (18) being electrically connected to the control box (3), a fixed block (19) being fixedly mounted on one side of the connecting tube (13), a long screw (20) being rotatably mounted on the fixed block (19), one end of the long screw (20) being in contact with the spherical roller (15).

3. A road surface and subgrade performance detection device according to claim 1, characterized in that: A first hook (21) is fixedly mounted on one side of the vertical plate (6), a second hook (22) is fixedly mounted on one side of the control box (3), and an insertion rod (23) is provided between the first hook (21) and the second hook (22).

4. A road surface and subgrade performance detection device according to claim 1, characterized in that: The angle adjustment assembly includes a fixed frame (24) fixedly mounted on the side of the cart (1), a worm (25) rotatably mounted between the inner walls of the fixed frame (24), a handwheel (26) fixedly mounted on the top of the worm (25), a rotating column (27) rotatably mounted between the U-shaped frame (4) and the cart (1), a worm wheel (28) fixedly mounted on the outside of the rotating column (27), and the worm wheel (28) meshingly connected with the worm (25).

5. A road surface and subgrade performance detection device according to claim 1, characterized in that: Slide rails (29) are fixedly installed on both left and right sides of the inner wall of the installation cavity (9), and a slider (30) is slidably installed on the slide rails (29), and the slider (30) is fixedly connected to the movable plate (12).

6. A road surface and subgrade performance detection device according to claim 1, characterized in that: A through hole for the movable plate (12) to move is provided on one side of the vertical plate (6).

7. A road surface and subgrade performance detection device according to claim 1, characterized in that: A push block (31) is fixedly mounted on one side of the spherical roller (15), and the push block (31) has an isosceles triangle cross section.

8. A road surface and subgrade performance detection device according to claim 1, characterized in that: A limiting block (32) is fixedly mounted on the top end of the connecting rod (14), and a limiting ring (33) is fixedly mounted on the bottom end of the connecting tube (13).

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