A road construction quality testing device

Abstract

This invention discloses a road construction quality inspection device, including a horizontal plate with multiple rollers installed at its lower end and a circular opening. A support frame is fixedly connected to the upper end of the horizontal plate, and a downward pressure detection component is located at the lower end of the support frame. The downward pressure detection component includes a first motor mounted on the upper end of the support frame, with the output shaft of the first motor passing through the support frame and fixedly connected to a threaded rod. This device, through the arrangement of the downward pressure detection component and the cleaning component, can automatically clean the area below the sealing cylinder during road inspection. Furthermore, the use of sealing rings and sealing strips ensures the seal between the sealing cylinder and the ground during inspection, thereby reducing the time required to close the area during inspection. The inclusion of a partition and a simulation component allows for both dynamic and static inspection processes, enabling better detection of road permeability under different conditions.

Description

Technical Field

[0001] This invention relates to the field of road construction technology, and in particular to a road construction quality testing device. Background Technology

[0002] Road engineering refers to the entire process of planning, designing, constructing, maintaining and managing roads, as well as the engineering entities involved. In the field of road construction, it is often necessary to conduct timely quality inspections of roads. There are many indicators for inspecting the quality of road pavement pouring, such as flatness, compaction and permeability. Quality inspection is an essential procedure.

[0003] During quality inspection, it is necessary to test the permeability of roads. The existing testing method is to close off an area along the roadside, add water to that area to a certain depth, and then judge the permeability of the road based on the amount of water remaining in the area after a specific time. However, when closing off the road area, since existing road closures mostly use multiple barriers, and roads are not completely flat and there are some stones on the road, it is necessary to clean the surrounding area before closing off the area each time. After closing off the area with barriers, it is also necessary to seal the area between the barriers and the ground, which is quite troublesome. Therefore, it is necessary to design a road construction quality testing device to solve the above problems. Summary of the Invention

[0004] The purpose of this invention is to address the shortcomings of existing technologies by proposing a road construction quality inspection device. This device, through the arrangement of a downward-moving inspection component and a cleaning component, can automatically clean the area below the sealing cylinder during road inspection. Furthermore, the use of sealing rings and sealing strips ensures the sealing between the sealing cylinder and the ground during inspection, thereby reducing the time required to seal the area during inspection. Moreover, the use of partitions and simulation components allows for both dynamic and static inspection processes, enabling better detection of road permeability under different conditions.

[0005] To achieve the above objectives, the present invention adopts the following technical solution:

[0006] A road construction quality inspection device includes a horizontal plate with multiple rollers installed at its lower end and a circular opening. A support frame is fixedly connected to the upper end of the horizontal plate, and a pressure detection component is provided at the lower end of the support frame. The pressure detection component includes a first motor mounted on the upper end of the support frame, with the output shaft of the first motor penetrating the support frame and fixedly connected to a threaded rod. A threaded sleeve is threadedly connected to the threaded rod, and multiple connecting rods are fixedly connected to the outer side of the threaded sleeve. A sealing cylinder is provided at the upper end of the horizontal plate, and the multiple connecting rods are fixedly connected to the inner wall of the sealing cylinder. A cleaning component is provided at the lower end of the horizontal plate, and a partition is fixedly connected inside the sealing cylinder.

[0007] Preferably, a sealing ring is fixedly connected to the lower end of the sealing cylinder, and a sealing strip is fixedly connected to the lower end of the partition.

[0008] Preferably, the cleaning assembly includes a plurality of vertical rods rotatably connected to the lower end of a horizontal plate. The plurality of vertical rods are connected by a second transmission assembly. A shrink box is fixedly connected to the outer wall of each vertical rod. A second electromagnet is provided on the inner wall of each shrink box near the vertical rod. A shrink block is slidably connected inside each shrink box. Each shrink block is elastically connected to the adjacent side of the corresponding second electromagnet by a second spring. A cleaning strip is fixedly connected to the lower end of each shrink block.

[0009] Preferably, the inner top of the support frame is provided with a rotating assembly, the rotating assembly including a horizontal plate disposed at the inner top of the support frame, a guide groove at the lower end of the horizontal plate, an opening at the front side of the guide groove, a movable block slidably connected in the guide groove, a rectangular block fixedly connected at the lower end of the movable block, multiple toothed edges on both the left and right sides of the rectangular block, the upper end of the vertical rod located on the left side penetrating the horizontal plate and rotatably connected to the inner top of the support frame, a short rod rotatably connected to the inner top of the support frame, the short rod and the threaded rod being connected by a first transmission assembly, an incomplete gear on the short rod, a rotating gear on the vertical rod, and the movable block and the rear inner wall of the guide groove being elastically connected by a third spring.

[0010] Preferably, the rectangular block is provided with a shrinking component, the shrinking component includes a sliding groove disposed on the left side of the rectangular block, a slider is slidably connected in the sliding groove, a first electromagnet is provided on the right inner wall of the sliding groove, the first electromagnet is elastically connected to the adjacent side of the slider by a first spring, and a plurality of toothed ridges located on the right side are fixedly connected to the slider.

[0011] Preferably, a conductive plate is fixedly connected to the outer wall of the sealing cylinder, two conductive plates that cooperate with the conductive plate are fixedly connected to the inner right wall of the support frame, and a power supply is installed on the left side of the support frame.

[0012] Preferably, the conductive plate and the two conductive sheets constitute a conductive switch, and the power supply, the conductive switch, the first electromagnet and the multiple second electromagnets form a closed loop through wires.

[0013] Preferably, the sealing cylinder is provided with a simulation component, which includes an arc-shaped plate disposed inside the sealing cylinder. The arc-shaped plate is slidably connected to the inner wall and partition of the sealing cylinder. The arc-shaped plate is provided with multiple liquid discharge ports, each of which is equipped with a solenoid valve. A second motor is installed on the left side of the sealing cylinder. The output shaft of the second motor extends into the sealing cylinder and is fixedly connected to a crossbar. A lead screw is rotatably connected to the lower end of the connecting rod located on the left side. Both the lead screw and the crossbar are provided with meshing bevel gears. A lifting block is threadedly connected to the lead screw. The lifting block and the adjacent side of the arc-shaped plate are jointly fixedly connected to two fixing rods. A pressure sensor is fixedly connected to the inner wall of the sealing cylinder.

[0014] Preferably, the partition has a vertical cavity, the bottom space of the vertical cavity is connected to the left side space of the sealing cylinder through a communication port, a second liquid level sensor is fixedly connected to the right side of the partition, the sensing end of the second liquid level sensor extends to the bottom of the vertical cavity, and a first liquid level sensor is fixedly connected to the outer wall of the sealing cylinder, the sensing end of the first liquid level sensor extends to the bottom of the sealing cylinder.

[0015] Preferably, the first transmission assembly includes a first sprocket disposed on a short rod and a threaded rod, and the two first sprockets are connected by a first chain drive. The second transmission assembly includes a second sprocket disposed on a plurality of vertical rods, and the plurality of second sprockets are connected by a second chain drive. The plurality of vertical rods are distributed in a circular array.

[0016] The present invention has the following beneficial effects:

[0017] 1. Compared with the existing technology, by setting up the pressure detection component, after the sealing cylinder is moved to the designated position on the road, the operation of the first motor can make the sealing cylinder move down to contact the ground, and the sealing strip and sealing ring are tightly pressed on the ground to ensure the sealing between the sealing cylinder and the ground, thereby greatly reducing the time required to close the area.

[0018] 2. Compared with the existing technology, by setting up the cleaning components, multiple cleaning strips can be continuously oscillating when the sealing cylinder moves down, thereby sweeping away the stones under the sealing cylinder and avoiding the situation where the sealing cylinder cannot contact the ground due to the obstruction of the stones.

[0019] 3. Compared with the existing technology, by setting the first electromagnet and the second electromagnet, the cleaning component will stop running after the sealing cylinder is moved down a certain distance, and the shrink block will enter the shrink box. This avoids the situation where the shrink block is located below the sealing cylinder, which would prevent the sealing cylinder from contacting the ground and forming a sealing area.

[0020] 4. Compared with existing technologies, by setting up simulation components, water in half of the sealed cylinder can be continuously lifted and then dropped through multiple drop outlets when testing permeability, so that the water in the sealed cylinder is in a dynamic state, thus simulating rainy days and thus detecting the permeability of roads during rainy days.

[0021] 5. Compared with the existing technology, by setting up the first liquid level sensor and the second liquid level sensor, the permeability of the road under static conditions and the permeability of the road under dynamic conditions can be compared and detected during the detection, so as to better grasp the permeability of the road.

[0022] In summary, this invention can quickly create a closed area on a road, thereby greatly reducing the time required to close the area. Furthermore, by setting up the first and second electromagnets, the vertical rod will no longer rotate after the sealing cylinder has moved down to a certain extent, and the shrink block will enter the shrink box, thus preventing the sealing cylinder from failing to contact the ground. Moreover, by setting up the simulation component, it is possible to simulate and detect the water permeability of the road on rainy days, and compare it with the water permeability of the road under static conditions. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a road construction quality testing device proposed in this invention;

[0024] Figure 2 for Figure 1 A structural diagram from another perspective;

[0025] Figure 3 for Figure 2 Schematic diagram of the rotating assembly;

[0026] Figure 4 for Figure 3 A diagram illustrating the positive results;

[0027] Figure 5 This is a schematic diagram of the internal structure of the sealing cylinder;

[0028] Figure 6 for Figure 5 A sectional view;

[0029] Figure 7 for Figure 2 A magnified view of a portion of the image;

[0030] Figure 8 This is a schematic diagram of the cleaning component.

[0031] Figure 9 This is a planar sectional view of the partition.

[0032] In the diagram: 1 horizontal plate, 2 support frame, 3 roller, 4 first motor, 5 telescopic rod, 6 sealing cylinder, 7 threaded sleeve, 8 connecting rod, 9 round opening, 10 threaded rod, 11 conductive plate, 12 first liquid level sensor, 13 second motor, 14 vertical rod, 15 first transmission assembly, 16 short rod, 17 rotating gear, 18 horizontal plate, 19 moving block, 20 incomplete gear, 21 toothed edge, 22 rectangular block, 23 first electromagnet, 24 first spring, 25 slider, 26 pressure sensor, 27 lifting block, 28 fixed rod, 29 lead screw, 30 bevel gear, 31 horizontal rod, 32 arc plate, 33 drop outlet, 34 partition plate, 35 sealing ring, 36 sealing strip, 37 second transmission assembly, 38 shrink box, 39 second electromagnet, 40 second spring, 41 shrink block, 42 ​​cleaning strip, 43 second liquid level sensor, 44 connecting port, 45 vertical cavity. Detailed Implementation

[0033] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention.

[0034] Reference Figures 1-9 A road construction quality inspection device includes a horizontal plate 1, with multiple rollers 3 installed at the lower end of the horizontal plate 1. The horizontal plate 1 has a circular opening 9. A support frame 2 is fixedly connected to the upper end of the horizontal plate 1. A pressure detection component is provided at the lower end of the support frame 2. The pressure detection component includes a first motor 4 set at the upper end of the support frame 2. The first motor 4 is a servo motor. The first motor 4 drives a threaded rod 10 to rotate clockwise, causing the sealing cylinder 6 to move downward. The first motor 4 drives the threaded rod 10 to rotate counterclockwise, causing the sealing cylinder 6 to move upward. The output shaft of the first motor 4 passes through the support frame 2 and is fixedly connected to the threaded rod 10. A threaded sleeve 7 is threadedly connected to the threaded rod 10. Multiple connecting rods 8 are fixedly connected to the outer side of the threaded sleeve 7. The upper end of the horizontal plate 1 has a sealing cylinder 6. The multiple connecting rods 8 are fixedly connected to the inner wall of the sealing cylinder 6. The lower end of the horizontal plate 1 has a cleaning component. A partition 34 is fixedly connected inside the sealing cylinder 6, dividing the sealing cylinder 6 into left and right spaces.

[0035] The lower end of the sealing cylinder 6 is fixedly connected to a sealing ring 35 to ensure the sealing between the sealing cylinder 6 and the ground. The lower end of the partition 34 is fixedly connected to a sealing strip 36 to ensure the sealing between the left and right spaces after the sealing cylinder 6 comes into contact with the ground.

[0036] The cleaning assembly includes multiple vertical rods 14 rotatably connected to the lower end of the horizontal plate 1. The multiple vertical rods 14 are connected by a second transmission assembly 37. Each vertical rod 14 has a shrink box 38 fixedly connected to its outer wall. Each shrink box 38 has a second electromagnet 39 on its inner wall near the vertical rod 14. Each shrink box 38 has a shrink block 41 slidably connected inside it. The shrink block 41 is made of iron. When the second electromagnet 39 is energized, it exerts an attractive force on the shrink block 41. Each shrink block 41 is elastically connected to the adjacent side of the corresponding second electromagnet 39 by a second spring 40. Each shrink block 41 has a cleaning strip 42 fixedly connected to its lower end. The second transmission assembly 37 includes a second sprocket mounted on the multiple vertical rods 14. The multiple second sprockets are connected by a second chain. The multiple vertical rods 14 are arranged in a circular array.

[0037] The support frame 2 has a rotating assembly at its inner top. The rotating assembly includes a horizontal plate 18 at the inner top of the support frame 2. The lower end of the horizontal plate 18 has a guide groove with an opening at the front. A moving block 19 is slidably connected in the guide groove. A rectangular block 22 is fixedly connected to the lower end of the moving block 19. Multiple toothed ridges 21 are provided on both the left and right sides of the rectangular block 22. The upper end of the vertical rod 14 on the left side passes through the horizontal plate 1 and is rotatably connected to the inner top of the support frame 2. A short rod 16 is rotatably connected to the inner top of the support frame 2. The short rod 16 and the threaded rod 10 are connected by transmission through the first transmission assembly 15. The first transmission assembly 15 includes a first sprocket mounted on a short rod 16 and a threaded rod 10. The two first sprockets are connected by a first chain. An incomplete gear 20 is mounted on the short rod 16, and a rotating gear 17 is mounted on the vertical rod 14. The moving block 19 is elastically connected to the rear inner wall of the guide groove by a third spring. A shrinking assembly is provided inside the rectangular block 22. The shrinking assembly includes a sliding groove on the left side of the rectangular block 22. A slider 25 is slidably connected in the sliding groove. The slider 25 is made of iron. A first electromagnet 23 is provided on the right inner wall of the sliding groove. When the first electromagnet 23 is energized, it exerts an attractive force on the slider 25. The adjacent sides of the first electromagnet 23 and the slider 25 are elastically connected by a first spring 24. Multiple toothed ridges 21 on the right side are fixedly connected to the slider 25. In the initial state, the toothed ridges 21 on the left side are engaged with the rotating gear 17.

[0038] The outer wall of the sealing cylinder 6 is fixedly connected to a conductive plate 11, and the inner wall of the right side of the support frame 2 is fixedly connected to two conductive plates that cooperate with the conductive plate 11. A power supply is installed on the left side of the support frame 2. The conductive plate 11 and the two conductive plates constitute a conductive switch. The power supply, the conductive switch, the first electromagnet 23 and multiple second electromagnets 39 form a closed loop through wires.

[0039] The sealing cylinder 6 is equipped with a simulation component, which includes an arc-shaped plate 32 installed inside the sealing cylinder 6. The arc-shaped plate 32 is slidably connected to the inner wall of the sealing cylinder 6 and the partition plate 34. The arc-shaped plate 32 is provided with multiple liquid outlets 33, and each of the multiple liquid outlets 33 is equipped with a solenoid valve. A second motor 13 is installed on the left side of the sealing cylinder 6. The output shaft of the second motor 13 extends into the sealing cylinder 6 and is fixedly connected to a crossbar 31. The lower end of the connecting rod 8 located on the left side is rotatably connected to a lead screw 29. The thread layer on the lead screw 29 is a reciprocating thread layer. Both the lead screw 29 and the crossbar 31 are provided with bevel gears 30 that mesh with each other. A lifting block 27 is threadedly connected to the lead screw 29. The lifting block 27 and the adjacent side of the arc-shaped plate 32 are jointly fixedly connected to two fixed rods 28. A pressure sensor 26 is fixedly connected to the inner wall of the sealing cylinder 6. A controller is provided. When the pressure sensor 26 is squeezed, it generates an electrical signal that is transmitted to the controller. The controller controls the multiple solenoid valves to be energized, so that the multiple liquid outlets 33 are open.

[0040] The partition 34 has a vertical cavity 45. The bottom space of the vertical cavity 45 is connected to the left space of the sealing cylinder 6 through a connecting port 44. The right side of the partition 34 is fixedly connected to a second liquid level sensor 43. The sensing end of the second liquid level sensor 43 extends to the bottom of the vertical cavity 45. The outer wall of the sealing cylinder 6 is fixedly connected to a first liquid level sensor 12. The sensing end of the first liquid level sensor 12 extends to the bottom of the sealing cylinder 6. The permeability of the road can be determined based on the electrical signals of the first liquid level sensor 12 and the second liquid level sensor 43.

[0041] The functional principle of this invention can be explained by the following operation: When inspecting the road, after the horizontal plate 1 is pushed to the designated area by multiple rollers 3, the first motor 4 can be controlled to run, so that the output shaft of the first motor 4 drives the threaded rod 10 to rotate clockwise, thereby causing the threaded sleeve 7 to drive the sealing cylinder 6 to move down.

[0042] Since the first electromagnet 23 and the second electromagnet 39 are both energized in the initial state, when the threaded rod 10 rotates, it drives the short rod 16 to rotate through the first transmission assembly 15, which in turn causes the incomplete gear 20 to rotate. Since the multiple toothed edges 21 on the left side are meshed with the rotating gear 17, when the incomplete gear 20 meshes with the toothed edge 21 on the right side, the incomplete gear 20 will drive the rectangular block 22 and the moving block 19 to move forward, thereby stretching the third spring, which in turn causes the rotating gear 17 to drive the vertical rod 14 to rotate. When the incomplete gear 20 is not meshed with the toothed edge 21 on the right side, the moving block 19 and the rectangular block 22 will move back under the elastic action of the third spring, which will cause the rotating gear 17 to drive the vertical rod 14 to rotate in the opposite direction.

[0043] The intermittent engagement of the incomplete gear 20 with multiple toothed ridges 21 on the right side causes the vertical rod 14 to continuously rotate in both directions. Since the multiple vertical rods 14 are connected by the second transmission assembly 37, the multiple vertical rods 14 drive the shrink box 38, shrink block 41 and sweeping strip 42 to continuously rotate in both directions, thereby causing the sweeping strip 42 to sweep away the stones on the road below the sealing cylinder 6, thus ensuring that the sealing cylinder 6 can contact the ground.

[0044] When the sealing cylinder 6 moves down to the specified distance, the conductive plate 11 will contact the two conductive sheets, thereby energizing the first electromagnet 23 and multiple second electromagnets 39. After the first electromagnet 23 is energized, it will exert an attractive force on the slider 25, causing the slider 25 to enter the sliding groove. This will cause the toothed edge 21 on the left side to no longer mesh with the rotating gear 17. At this time, the continued operation of the first motor 4 will cause the sealing cylinder 6 to continue to move down, and the vertical rod 14 will no longer rotate.

[0045] When multiple second electromagnets 39 are energized, they will exert an attractive force on the corresponding shrink blocks 41, thereby causing multiple shrink blocks 41 and cleaning strips 42 to move into the shrink box 38, thus preventing the sealing cylinder 6 from moving down and failing to contact the ground.

[0046] As the sealing cylinder 6 continues to move downward, it will press the sealing ring 35 and the sealing strip 36 tightly onto the ground, thus forming a sealed space. At this time, a certain amount of water is injected into the left and right spaces of the sealing cylinder 6, so that the water level in the left and right spaces of the sealing cylinder 6 is equal, and the second motor 13 is controlled to run.

[0047] After the second motor 13 is running, the bevel gear 30 on the crossbar 31 and the lead screw 29 are in a meshing state, which causes the lifting block 27 to drive the arc plate 32 to move up and down. When the arc plate 32 moves up, it will drive the water in the space on the right side of the sealing cylinder 6 to move up. When the arc plate 32 moves up to contact the pressure sensor 26, the pressure sensor 26 will generate an electrical signal and transmit it to the controller. The controller controls multiple solenoid valves to be energized for a period of time, so that the water will fall through multiple drop outlets 33 and then be sprayed on the ground again.

[0048] When the curved plate 32 moves down, the water will continue to fall and accumulate on the road surface because the drop outlet 33 is still open. When the curved plate 32 moves down to below the water surface, the water will re-enter the area above the curved plate 32 through the drop outlet 33. When the curved plate 32 moves down to the bottom, multiple solenoid valves will close, and the water will continue to move up with the curved plate 32 to simulate a rainy day.

[0049] Because of the connection port 44, when the arc plate 32 moves to the bottom, the water level in the vertical cavity 45 is level with the water level in the sealing cylinder 6. The staff can periodically activate the first liquid level sensor 12 and the second liquid level sensor 43 to observe the remaining water level depth based on the electrical signals generated by the first liquid level sensor 12 and the second liquid level sensor 43, thereby understanding the permeability of the road.

[0050] The above are merely preferred embodiments of the present invention, but the scope of protection of the present invention is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in the present invention, based on the technical solution and inventive concept of the present invention, should be covered within the scope of protection of the present invention.

Claims

1. A road construction quality inspection device, comprising a horizontal plate (1), characterized in that: The lower end of the horizontal plate (1) is equipped with multiple rollers (3), the horizontal plate (1) is provided with a round opening (9), the upper end of the horizontal plate (1) is fixedly connected to a support frame (2), the lower end of the support frame (2) is provided with a pressure detection component, the pressure detection component includes a first motor (4) provided on the upper end of the support frame (2), the output shaft end of the first motor (4) passes through the support frame (2) and is fixedly connected to a threaded rod (10), a threaded sleeve (7) is threadedly connected on the threaded rod (10), multiple connecting rods (8) are fixedly connected to the outside of the threaded sleeve (7), the upper end of the horizontal plate (1) is provided with a sealing cylinder (6), the multiple connecting rods (8) are fixedly connected to the inner wall of the sealing cylinder (6), the lower end of the horizontal plate (1) is provided with a cleaning component, and a partition (34) is fixedly connected inside the sealing cylinder (6) to divide the sealing cylinder (6) into left and right side spaces; The sealing cylinder (6) is equipped with a simulation component, which includes an arc-shaped plate (32) disposed inside the sealing cylinder (6). The arc-shaped plate (32) is slidably connected to the inner wall of the sealing cylinder (6) and the partition plate (34). The arc-shaped plate (32) is provided with multiple liquid outlets (33), and each of the multiple liquid outlets (33) is equipped with a solenoid valve. A pressure sensor (26) is fixedly connected to the inner wall of the sealing cylinder (6), which presses the sealing ring (35) and the sealing strip (36) tightly onto the ground, thereby forming a seal. At this time, a certain amount of water is injected into the left and right sides of the sealed cylinder (6) so that the water level in the left and right sides of the sealed cylinder (6) is equal. When the arc plate (32) moves up, it will drive the water in the right side of the sealed cylinder (6) to move up. When the arc plate (32) moves up to contact the pressure sensor (26), the pressure sensor (26) will generate an electrical signal and transmit it to the controller. The controller controls multiple solenoid valves to be energized for a period of time, so that the water will fall through multiple drop outlets (33) and then be sprayed on the ground again. When the arc plate (32) moves down, the water will continue to fall and accumulate on the road surface because the liquid outlet (33) is still in a conductive state. When the arc plate (32) moves down to below the water surface, the water will re-enter the arc plate (32) through the liquid outlet (33). When the arc plate (32) moves down to the bottom, multiple solenoid valves will close, and the water will continue to move up with the arc plate (32) to simulate a rainy day.

2. The road construction quality testing device according to claim 1, characterized in that: A sealing ring (35) is fixedly connected to the lower end of the sealing cylinder (6), and a sealing strip (36) is fixedly connected to the lower end of the partition (34).

3. The road construction quality testing device according to claim 2, characterized in that: The cleaning assembly includes a plurality of vertical rods (14) rotatably connected to the lower end of the horizontal plate (1). The plurality of vertical rods (14) are connected by a second transmission assembly (37). A shrink box (38) is fixedly connected to the outer wall of each vertical rod (14). A second electromagnet (39) is provided on the inner wall of each shrink box (38) near the vertical rod (14). A shrink block (41) is slidably connected inside each shrink box (38). Each shrink block (41) is elastically connected to the adjacent side of the corresponding second electromagnet (39) by a second spring (40). A cleaning strip (42) is fixedly connected to the lower end of each shrink block (41).

4. The road construction quality testing device according to claim 3, characterized in that: The support frame (2) has a rotating assembly at its inner top. The rotating assembly includes a horizontal plate (18) at the inner top of the support frame (2). The lower end of the horizontal plate (18) has a guide groove with an opening at the front. A moving block (19) is slidably connected in the guide groove. A rectangular block (22) is fixedly connected to the lower end of the moving block (19). Multiple toothed edges (21) are provided on both the left and right sides of the rectangular block (22). The upper end of the vertical rod (14) located on the left side of the rectangular block (22) passes through the horizontal plate (1) and is rotatably connected to the inner top of the support frame (2). The inner top of the support frame (2) is rotatably connected to a short rod (16). The short rod (16) and the threaded rod (10) are connected by a first transmission assembly (15). The short rod (16) is provided with an incomplete gear (20). The vertical rod (14) is provided with a rotating gear (17). The rotating gear (17) meshes with the toothed edge (21) located on the left side of the rectangular block (22). The incomplete gear (20) meshes intermittently with the toothed edge (21) located on the right side of the rectangular block (22). The moving block (19) is elastically connected to the rear inner wall of the guide groove by a third spring.

5. A road construction quality testing device according to claim 4, characterized in that: The rectangular block (22) is provided with a shrinking component. The shrinking component includes a sliding groove on the left side of the rectangular block (22). A slider (25) is slidably connected in the sliding groove. A first electromagnet (23) is provided on the right inner wall of the sliding groove. The first electromagnet (23) and the adjacent side of the slider (25) are elastically connected by a first spring (24). The multiple toothed edges (21) on the right side are fixedly connected to the slider (25).

6. The road construction quality testing device according to claim 5, characterized in that: The outer wall of the sealing cylinder (6) is fixedly connected to a conductive plate (11), and the inner wall of the right side of the support frame (2) is fixedly connected to two conductive plates that cooperate with the conductive plate (11). A power supply is installed on the left side of the support frame (2).

7. A road construction quality testing device according to claim 6, characterized in that: The conductive plate (11) and the two conductive sheets constitute a conductive switch, and the power supply, the conductive switch, the first electromagnet (23) and the multiple second electromagnets (39) form a closed loop through the wires.

8. The road construction quality testing device according to claim 1, characterized in that: A second motor (13) is installed on the left side of the sealing cylinder (6). The output shaft of the second motor (13) extends into the sealing cylinder (6) and is fixedly connected to a crossbar (31). A lead screw (29) is rotatably connected to the lower end of the connecting rod (8) on the left side. Both the lead screw (29) and the crossbar (31) are provided with bevel gears (30) that mesh with each other. A lifting block (27) is threaded onto the lead screw (29). The lifting block (27) and the adjacent side of the arc plate (32) are fixedly connected to two fixing rods (28).

9. A road construction quality testing device according to claim 5, characterized in that: The partition (34) is provided with a vertical cavity (45). The bottom space of the vertical cavity (45) is connected to the left space of the sealing cylinder (6) through a communication port (44). A second liquid level sensor (43) is fixedly connected to the right side of the partition (34). The sensing end of the second liquid level sensor (43) extends to the bottom of the vertical cavity (45). A first liquid level sensor (12) is fixedly connected to the outer wall of the sealing cylinder (6). The sensing end of the first liquid level sensor (12) extends to the bottom of the sealing cylinder (6).

10. A road construction quality testing device according to claim 4, characterized in that: The first transmission assembly (15) includes a first sprocket disposed on a short rod (16) and a threaded rod (10), and the two first sprockets are connected by a first chain drive. The second transmission assembly (37) includes a second sprocket disposed on a plurality of vertical rods (14), and the plurality of second sprockets are connected by a second chain drive. The plurality of vertical rods (14) are distributed in a ring array.

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