Road asphalt pavement detection device

Abstract

The utility model discloses a road asphalt pavement detection device, which comprises a bottomless measuring cylinder, a measuring cylinder mounting hopper fixedly mounted at the bottom end of the bottomless measuring cylinder, a through-flow control valve fixedly mounted at the bottom end of the measuring cylinder mounting hopper, a measurement connecting hopper fixedly mounted at the bottom end of the through-flow control valve, and a measuring rod fixedly mounted at the bottom end of the measuring cylinder mounting hopper, a measurement limiting cylinder is fixedly mounted on the inner wall of the bottom end of the measurement connecting hopper; and the inner wall of the extrusion connecting ring is fixedly connected with a fixed connecting cylinder which fixedly sleeves the outer wall of the bottom end of the measurement connecting hopper. The exhaust condition in the measurement connecting hopper is determined through the measurement exhaust pipe and the ventilation control valve, the exhaust effect can be conveniently controlled, meanwhile, the sealant groove in the bottom end of the sealing rubber pad is filled with glass cement, the difficulty of manually smearing the glass cement is reduced, and the working efficiency is improved. The measurement limiting cylinder with the same inner diameter as the bottomless measuring cylinder is adopted for detecting the water permeability of the asphalt pavement, the related standard of the water permeability detection of the asphalt pavement is met, and the accuracy of a detection structure is controlled.

Description

Technical Field

[0001] This utility model relates to the field of asphalt pavement testing technology, and in particular to a highway asphalt pavement testing device. Background Technology

[0002] In existing technologies, asphalt pavements are constructed from mineral materials and asphalt binders, possessing characteristics such as smoothness, wear resistance, and impermeability, and are classified as high-grade pavements. Their structural layers can be flexible base courses, semi-rigid base courses, or rigid base courses. SBS-modified asphalt is a technology that modifies base asphalt by adding styrene-butadiene-styrene (SBS) thermoplastic elastomer. Its core characteristics are improved elasticity, low-temperature crack resistance, and fatigue resistance of the asphalt. Asphalt pavements constructed using modified asphalt can optimize pavement properties such as resistance to rutting and water damage.

[0003] A search revealed a Chinese patent application with patent number 202411693046.6, which discloses a highway asphalt pavement testing device. The device includes a housing with a water-permeable component at the bottom. It also includes a turntable, which is horizontally positioned. A rotating opening is provided at the bottom of the housing. The turntable is located inside the rotating opening and is rotatably connected to it. The water-permeable component passes through the turntable and is movably connected to it. At least one transmission cylinder is vertically positioned on one side of the water-permeable component.

[0004] The aforementioned patent has the following shortcomings: In actual use, the device simulates the stress state of the road surface through the pressure component to determine the water seepage of the asphalt road surface in actual use. However, the bottom of the water outlet pipe of the water seepage component is equipped with a rubber sealing block, which makes it inconvenient to vent air. The air inside the rubber sealing block is not conducive to the water seepage experiment. At the same time, the diameter of the water outlet pipe is small, which makes the area for water seepage testing too small, which is not conducive to controlling the accuracy of the water seepage test results. Utility Model Content

[0005] The purpose of this invention is to address the shortcomings of existing technologies by proposing a highway asphalt pavement testing device.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] A highway asphalt pavement testing device, comprising:

[0008] A bottomless graduated cylinder has a graduated cylinder mounting hopper fixedly installed at its bottom end. A flow control valve is fixedly installed at the bottom end of the graduated cylinder mounting hopper. A measuring connection hopper is fixedly installed at the bottom end of the flow control valve. A measuring limit cylinder is fixedly installed on the inner wall of the bottom end of the measuring connection hopper. A measuring exhaust pipe is fixedly connected to one side of the neck of the measuring connection hopper.

[0009] The extrusion connecting ring has a fixed connecting cylinder that is fixedly sleeved on the outer wall of the bottom end of the measuring connecting bucket. A sealing ring cover is slidably sleeved on the outer wall of the fixed connecting cylinder. A sealing rubber gasket is fixedly installed at the bottom end of the sealing ring cover. A sealing rubber groove is opened at the bottom end of the sealing rubber gasket. Multiple fixed connecting columns are fixedly connected at equal intervals at the top end of the sealing ring cover. A lifting cylinder is provided at the top end of each fixed connecting column. The multiple lifting cylinders are linked together.

[0010] As a further embodiment of this utility model: a venting connection pipe is fixedly installed at the end of the measuring exhaust pipe, and a venting control valve is fixedly installed at the end of the venting connection pipe.

[0011] As a further improvement of this utility model: a connecting sleeve is fixedly installed at the bottom of the telescopic end of the lifting cylinder, and the connecting sleeve is fixedly installed at the top of the fixed connecting column.

[0012] As a further improvement of this utility model: the top of the fixed connecting column has a through-hole compression connecting ring, and the outer wall of the fixed connecting column is fitted with a compression spring.

[0013] As a further improvement of this utility model: a limiting connecting ring is provided at the top of the compression spring, and the limiting connecting ring is fixedly connected to the outer wall of the fixed connecting column.

[0014] As a further embodiment of this utility model: positioning sleeves are fixedly sleeved on the outer walls of the plurality of lifting cylinders, and positioning ring plates are fixedly connected to the outer walls of the plurality of positioning sleeves.

[0015] As a further improvement of this utility model: a plurality of connecting short rods are fixedly connected at equal intervals to the top of the positioning ring plate, and a positioning ring seat is fixedly connected to the top of the plurality of connecting short rods.

[0016] As a further improvement of this utility model: the top end of the positioning ring seat is fixedly connected to a plurality of connecting curved arms, and the tail ends of the plurality of connecting curved arms are fixedly connected to a mounting bracket.

[0017] Compared with the prior art, the present invention provides a highway asphalt pavement testing device, which has the following beneficial effects:

[0018] 1. This highway asphalt pavement testing device determines the exhaust situation inside the measuring connection bucket by measuring the exhaust pipe and the ventilation control valve, which facilitates the control of the exhaust effect. At the same time, the sealing groove at the bottom of the sealing rubber pad is filled with glass glue, which reduces the difficulty of manually applying glass glue. It uses a measuring limit cylinder with the same inner diameter as the bottomless measuring cylinder to test the water permeability of asphalt pavement, which meets the relevant standards for the water permeability testing of asphalt pavement and helps to control the accuracy of the testing structure.

[0019] 2. This highway asphalt pavement testing device, through its integrated structure, reduces the number of manual operation steps in the asphalt pavement permeability testing process, lowers the difficulty of testing operations, and improves testing efficiency.

[0020] The parts of this device not covered herein are the same as or can be implemented using existing technologies. This utility model has a simple structure and is easy to operate. Attached Figure Description

[0021] Figure 1 This is a three-dimensional structural diagram of the overall assembly of this utility model;

[0022] Figure 2 This is a partial cross-sectional view of the overall assembly of this utility model.

[0023] Figure 3 This utility model Figure 2 Enlarged structural diagram at point A;

[0024] Figure 4 This utility model Figure 2 A magnified structural diagram at point B in the middle.

[0025] In the diagram: 1. Mounting bracket; 2. Connecting crank arm; 3. Positioning ring seat; 4. Connecting short rod; 5. Positioning ring plate; 6. Positioning clamp; 7. Lifting cylinder; 8. Connecting sleeve; 9. Fixed connecting column; 10. Limiting connecting ring; 11. Compression spring; 12. Compression connecting ring; 13. Sealing ring cover; 14. Sealing rubber gasket; 15. Bottomless measuring cylinder; 16. Measuring cylinder mounting hopper; 17. Flow control valve; 18. Measuring connecting hopper; 19. Measuring exhaust pipe; 20. Ventilation connecting pipe; 21. Ventilation control valve; 22. Measuring limiting cylinder; 23. Fixed connecting cylinder; 24. Sealing groove. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0027] A highway asphalt pavement testing device, such as Figures 1 to 4 As shown, it includes: a bottomless measuring cylinder 15 for observing the amount of water seepage from asphalt filter cotton and a compression connecting ring 12 for connecting the whole device; a measuring cylinder mounting hopper 16 is fixedly installed at the bottom end of the bottomless measuring cylinder 15, and a flow control valve 17 is fixedly installed at the bottom end of the neck of the measuring cylinder mounting hopper 16; the inner diameter of the bottomless measuring cylinder 15 is set to 150 mm, and the inner diameter of the flow channel of the flow control valve 17 is set to 100 mm.

[0028] An inverted measuring connecting bucket 18 is fixedly installed at the bottom end of the flow control valve 17. A measuring limiting cylinder 22 is fixedly installed on the inner wall of the bottom end of the measuring connecting bucket 18. The inner diameter of the measuring limiting cylinder 22 is set to 150 mm, and a limiting ring is integrally formed at the bottom end of the measuring limiting cylinder 22. The bottom end of the measuring connecting bucket 18 is attached to the upper surface of the limiting ring.

[0029] A measuring vent pipe 19 is fixedly connected to one side of the neck of the measuring connecting bucket 18. A vent pipe 20 is fixedly installed at the end of the measuring vent pipe 19, and a vent control valve 21 is fixedly installed at the end of the vent pipe 20. The vent pipe 20 is configured as a bent pipe, and the horizontal position of its vent outlet is higher than the horizontal position of the water inlet at the top of the neck of the measuring connecting bucket 18. During the venting process, the vent control valve 21 is opened. When water flows out of the vent control valve 21, it indicates that the venting work is completed, and the vent control valve 21 is closed.

[0030] A fixed connecting cylinder 23 is fixedly connected to the inner wall of the extrusion connecting ring 12. The fixed connecting cylinder 23 is fixedly sleeved on the outer wall of the bottom end of the measuring connecting bucket 18 and fits against the upper surface of the limiting ring plate, so that the extrusion connecting ring 12 can drive the measuring connecting bucket 18 to move synchronously.

[0031] A sealing ring cover 13 is slidably sleeved on the outer wall of the fixed connecting cylinder 23. A sealing rubber gasket 14 is fixedly installed at the bottom end of the sealing ring cover 13. A sealing groove 24 is opened at the bottom end of the sealing rubber gasket 14. The sealing groove 24 is filled with glass glue. The glass glue is used to improve the sealing performance of the sealing rubber gasket 14 to the measuring limiting cylinder 22 and reduce the possibility of water seepage between the lower surface of the limiting ring plate and the asphalt pavement during the water seepage detection process.

[0032] Multiple limiting sleeves 1 are welded at equal intervals to the top of the sealing ring cover 13. A fixed connecting post 9 is fixedly inserted inside the limiting sleeve 1. The top of the fixed connecting post 9 passes through the extrusion connecting ring 12. Multiple limiting sleeves 2 are integrally formed at the top of the extrusion connecting ring 12. A linear bearing is fixedly installed on the inner wall of the limiting sleeve 2. The linear bearing is slidably sleeved on the outside of the fixed connecting post 9 to ensure that the fixed connecting post 9 can slide smoothly relative to the extrusion connecting ring 12.

[0033] A compression spring 11 is sleeved on the outer wall of the second limiting cylinder. A limiting connecting ring 10 is fixedly clamped to the top of the compression spring 11. The limiting connecting ring 10 is welded to the top of the outer wall of the fixed connecting column 9. The elastic force of the compression spring 11 causes the compression connecting ring 12 to squeeze the fixed connecting cylinder 23, which in turn generates a downward pushing force on the limiting ring at the bottom of the measuring limiting cylinder 22, ensuring the stability of the measuring limiting cylinder 22.

[0034] A connecting sleeve 8 is fixedly installed at the top of the fixed connecting column 9, and a lifting cylinder 7 is fixedly installed at the top of the connecting sleeve 8. Multiple lifting cylinders 7 are linked together, and positioning cylinders 6 are fixedly sleeved on the outer wall of multiple lifting cylinders 7. Positioning ring plates 5 are fixedly connected to the outer wall of multiple positioning cylinders 6.

[0035] Multiple limiting cylinders 3 are fixedly connected at equal intervals to the top of the positioning ring plate 5. A connecting short rod 4 is fixedly installed inside the limiting cylinder 3. A positioning ring seat 3 is fixedly connected to the top of the multiple connecting short rods 4. Two sets of symmetrically arranged limiting cylinders 4 are welded to the top of the positioning ring seat 3.

[0036] The internal fixed connection of the limit cylinder four has multiple connecting crank arms 2, and the tail ends of the multiple connecting crank arms 2 are fixedly connected to the mounting brackets 1. The mounting brackets 1 are connected to the mobile trolley (not shown) carrying this device, which facilitates the movement of the whole device.

[0037] Working principle:

[0038] Please refer to Figures 1 to 4 Assemble the device as shown in the figure;

[0039] In use, the device is first moved to the designated position by a trolley. Then, the sealing rubber gasket 14, coated with silicone sealant inside the sealing groove 24, is installed on the lower surface of the sealing ring cover 13. Next, multiple linked lifting cylinders 7 are activated. The lifting cylinders 7, through the connecting sleeve 8, drive the fixed connecting column 9 to move the sealing ring cover 13 downward. Under their own weight, the measuring connecting bucket 18, the fixed connecting cylinder 23, and the compression connecting ring 12 move downward synchronously until the measuring limiting cylinder 22 is in contact with the asphalt pavement. The lifting cylinders 7 continue to extend, causing the limiting connecting ring 10 to compress the compression spring 11. The compression spring 11 generates a thrust on the compression connecting ring 12. The compression connecting ring 12, through the fixed connecting cylinder 23, compresses the limiting ring of the measuring limiting cylinder 22, raising the measuring limiting cylinder. The stability of 22 is ensured until the sealing rubber pad 14 adheres to the asphalt pavement and deforms, causing the glass glue inside the sealing groove 24 to be squeezed into the gaps between the particles of the asphalt pavement; then, test water is injected into the bottomless measuring cylinder 15, with the water level aligned with the 500 ml mark; then, the venting control valve 21 and the flow control valve 17 are opened in sequence to allow test water to enter the measuring limit cylinder 22 and expel the air inside the measuring connecting hopper 18 until the test water flows out evenly from the venting control valve 21; then, the venting control valve 21 and the flow control valve 17 are closed in sequence; then, water is re-injected into the bottomless measuring cylinder 15 until the top mark of the water flow is level with the 500 ml mark; then, the flow control valve 17 is opened to conduct the asphalt pavement water permeability test.

[0040] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and the inventive concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. A highway asphalt pavement detection device, characterized in that, The utility model relates to a kind of measuring device, including: Bottom end fixed mounting of bottomless cylinder (15) is equipped with cylinder installation bucket (16), the bottom end fixed mounting of cylinder installation bucket (16) is equipped with through-flow control valve (17), the bottom end fixed mounting of through-flow control valve (17) is equipped with measurement connection bucket (18), the bottom end inner wall of measurement connection bucket (18) is fixedly installed with measurement limiting cylinder (22), and the neck of measurement connection bucket (18) is fixedly connected with measurement exhaust pipe (19) on one side; Fixedly connected with the fixed connection cylinder (23) of the outer wall of the bottom end of measurement connection bucket (18) in the inner wall of extrusion connection ring (12), the outer wall of fixed connection cylinder (23) is slidably sleeved with sealing ring cover (13), the bottom end of sealing ring cover (13) is fixedly installed with sealing rubber pad (14), the bottom end of sealing rubber pad (14) is equipped with sealing rubber groove (24), and the top of sealing ring cover (13) is fixedly connected with multiple fixed connection columns (9) at equal intervals, the top of fixed connection column (9) is provided with lifting cylinder (7), and multiple lifting cylinders (7) are linked.

2. The highway asphalt pavement detection device according to claim 1, characterized in that: The end of measurement exhaust pipe (19) is fixedly installed with air connection pipe (20), and the end of air connection pipe (20) is fixedly installed with air control valve (21).

3. The highway asphalt pavement detection device according to claim 1, characterized in that: The bottom of the telescopic end of lifting cylinder (7) is fixedly installed with connecting sleeve (8), and the connecting sleeve (8) is fixedly installed on the top of fixed connection column (9).

4. The highway asphalt pavement detection device according to claim 1, characterized in that: The top of fixed connection column (9) penetrates extrusion connection ring (12), and the outer wall of fixed connection column (9) is sleeved with extrusion spring (11).

5. The highway asphalt pavement detection device according to claim 4, characterized in that: The top of extrusion spring (11) is provided with limiting connection ring (10), and the limiting connection ring (10) is fixedly connected to the outer wall of fixed connection column (9).

6. The highway asphalt pavement detection device according to claim 1, characterized in that: The outer wall of multiple lifting cylinders (7) is fixedly sleeved with positioning sleeve (6), and the outer wall of multiple positioning sleeves (6) is fixedly connected with positioning ring plate (5).

7. The highway asphalt pavement detection device according to claim 6, characterized in that: The top of positioning ring plate (5) is fixedly connected with multiple connecting short rods (4) at equal intervals, and the top of multiple connecting short rods (4) is fixedly connected with positioning ring seat (3).

8. The highway asphalt pavement detection device according to claim 7, characterized in that: The top of positioning ring seat (3) is fixedly connected with multiple connecting curved arms (2), and the tail end of multiple connecting curved arms (2) is fixedly connected with mounting bracket (1).

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