Test detection device for road compactness

Abstract

A test detection device for road compactness comprises: a mobile support including a front frame, a middle frame and a rear frame; the soil sampling mechanism is arranged between the front frame and the middle frame, the soil sampling mechanism comprises a soil sampler and a telescopic rod, and the telescopic rod drives the soil sampler to move; the weighing mechanism is connected between the front frame and the middle frame in a sliding manner; the water containing mechanism comprises a clamping device and a water bag, and the clamping device clamps the top of the water bag; the water filling mechanism comprises a water tank and a water outlet pipe, and the water outlet pipe is arranged above the water bag. According to the device, a soil sampling mechanism, a weighing mechanism, a water filling mechanism and other parts of a water filling method are integrated on the movable bracket, so that the device is convenient to carry during a field test, the position of test equipment is fixed, the operation of a tester is facilitated, the test efficiency is improved, the loss of parts required by the test is avoided, and the parts do not need to be counted.

Description

Technical Field

[0001] The utility model relates to the technical field of compaction test, and more specifically, to a test and detection device for road compaction. Background Art

[0002] The quality of subgrade and pavement compaction is one of the most important internal indicators for road construction quality management. Only by fully compacting the subgrade and pavement structures can the strength, stiffness, stability, and smoothness of the subgrade and pavement be guaranteed, thereby extending the service life of the subgrade and pavement. The quality of on-site subgrade and pavement compaction is measured by the degree of compaction. For subgrade soil and pavement base, the degree of compaction refers to the ratio of the dry density actually achieved on site to the maximum dry density obtained from a standard indoor compaction test.

[0003] The commonly used method for actual dry density is the water filling method, which is to replace the volume of the soil with water. When using the water filling method, a variety of test equipment such as water bags, soil samplers, electronic scales, etc. are required. Multiple counts are required at the time of departure to reduce the possibility of leakage. Moreover, the use of multiple test equipment in sequence slows the test progress and has low test efficiency. Utility Model Content

[0004] In order to overcome the above-mentioned shortcomings, the present invention aims to provide a test and detection device for road compaction, which can integrate test equipment into one and improve test efficiency.

[0005] A test and detection device for highway compaction comprises: a mobile support, the mobile support comprising a front frame, a middle frame and a rear frame; a soil taking mechanism, the soil taking mechanism being arranged between the front frame and the middle frame, the soil taking mechanism comprising a soil taker and a telescopic rod, the telescopic rod driving the soil taker to move; a weighing mechanism, the weighing mechanism being slidably connected between the front frame and the middle frame; a water containing mechanism, the water containing mechanism comprising a clamp and a water bag, the clamp clamping the top of the water bag; a water filling mechanism, the water filling mechanism comprising a water tank and a water outlet pipe, the water outlet pipe being arranged above the water bag.

[0006] Furthermore, the soil-taking mechanism also includes a support frame, a connecting frame and an air release valve. The support frame is located on the upper part of the movable bracket, the fixed end of the telescopic rod is arranged on the support frame, the top of the connecting frame is fixedly connected to the telescopic end of the telescopic rod, the bottom of the connecting frame is fixedly connected to the soil-taking device, and the air release valve is arranged on the top of the soil-taking device.

[0007] Furthermore, the bottom of the air release valve is inside the soil sampler, the top of the air release valve is on the upper part of the soil sampler, and a clamp is hinged on the connecting frame, and the bottom of the clamp can limit the movement of the top of the air release valve.

[0008] Furthermore, the weighing mechanism includes a movable frame and an electronic scale, the electronic scale is fixed to the top of the movable frame, and the movable frame passes through the front frame.

[0009] Furthermore, a groove is provided on one side of the middle frame, and one end of the movable frame can be inserted into the groove.

[0010] Furthermore, the water bag is made of a flexible waterproof material, the opening diameter of the water bag is larger than the diameter of the soil extractor, the front end of the clamp is two annular clamping pieces, and the clamp clamps the opening of the water bag.

[0011] Furthermore, a rectangular block is provided at the rear end of the water bag, and the rectangular block is provided below the rear frame. A sliding rod is provided on the rectangular block, and the sliding rod passes through the rear frame. The sliding rod is provided with a thread, and a limiting nut is screwed onto the thread.

[0012] Furthermore, the irrigation mechanism also includes a water pump and a water pump. The water outlet pipe is arranged at the lower part of the water tank, and a valve is provided on the water outlet pipe. The water pump is arranged at the top of the water tank, and the water pump is connected to the water pump, and the water pump is a hose.

[0013] Furthermore, the water tank is arranged on the side wall of the movable bracket, the water tank is a transparent box, and scale lines are provided on the water tank.

[0014] Furthermore, the mobile bracket is provided with a control panel, and the control panel is electrically connected to the telescopic rod and the water pump.

[0015] Compared with the prior art, the beneficial effects of the present invention are:

[0016] ① This device integrates the soil sampling mechanism, weighing mechanism and water filling mechanism of the water filling method on a mobile bracket, which is convenient for carrying during field tests. The test equipment is fixed in position, which is convenient for test personnel to operate, improves test efficiency, avoids the loss of components required for the test, and eliminates the need to count components. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] The accompanying drawings are used to provide a further understanding of the present invention and constitute a part of the specification. Together with the embodiments of the present invention, they are used to explain the present invention and do not constitute a limitation of the present invention. In the accompanying drawings:

[0018] Figure 1 The present invention is a schematic diagram of the overall structure of a test device for road compaction.

[0019] Figure 2 The present invention is a schematic diagram of a soil taking mechanism in a test device for testing the compaction degree of a highway.

[0020] Figure 3It is a schematic diagram of the soil collecting device and the air suction valve in the soil collecting mechanism.

[0021] Figure 4 The present invention is a schematic diagram of a water storage mechanism and a water injection mechanism in a test device for road compaction.

[0022] In the figure: 1. Mobile bracket; 11. Front rack; 12. Middle rack; 121. Groove; 13. Rear rack; 14. Control panel; 2. Soil-taking mechanism; 21. Soil-taking device; 22. Telescopic rod; 23. Support frame; 231. Clamp; 24. Connecting frame; 25. Air release valve; 3. Weighing mechanism; 31. Mobile rack; 32. Electronic scale; 4. Water-holding mechanism; 41. Clamp; 411. Rectangular block; 412. Sliding rod; 413. Thread; 414. Limit nut; 42. Water bag; 5. Water-filling mechanism; 51. Water tank; 511. Scale line; 52. Water outlet pipe; 521. Valve; 53. Water suction pipe; 54. Water pump. DETAILED DESCRIPTION

[0023] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0024] like Figure 1 As shown, a test and detection device for highway compaction comprises: a mobile bracket 1, the mobile bracket 1 comprises a front frame 11, a middle frame 12 and a rear frame 13, and the bottoms of the front frame 11, the middle frame 12 and the rear frame 13 are all provided with guide wheels to facilitate the movement of the device; a soil taking mechanism 2, the soil taking mechanism 2 is arranged between the front frame 11 and the middle frame 12, the soil taking mechanism 2 comprises a soil taker 21 and a telescopic rod 22, and the telescopic rod 22 drives the soil taker 21 to move; a weighing mechanism 3, the weighing mechanism 3 is slidably connected between the front frame 11 and the middle frame 12; a water holding mechanism 4, the water holding mechanism 4 comprises a clamp 41 and a water bag 42, and the clamp 41 clamps the top of the water bag 42; a water filling mechanism 5, the water filling mechanism 5 comprises a water tank 51 and a water outlet pipe 52, and the water outlet pipe 52 is arranged above the water bag 42.

[0025] like Figure 2 、 3The soil-taking mechanism 2 also includes a support frame 23, a connecting frame 24 and an air release valve 25. The support frame 23 is located on the upper part of the mobile bracket 1. The top of the support frame 23 is higher than the mobile bracket 1. The fixed end of the telescopic rod 22 is provided on the support frame 23. The top of the connecting frame 24 is fixedly connected to the telescopic end of the telescopic rod 22. The bottom of the connecting frame 24 is fixedly connected to the soil-taking device 21. When taking soil, the telescopic rod 22 pushes the soil-taking device 21 to move down into the roadbed to be tested, so that the roadbed soil is cut by the soil-taking device 21. The air release valve 25 is provided at the top of the soil-taking device 21.

[0026] The bottom of the air release valve 25 is inside the soil extractor 21, and the top of the air release valve 25 is above the soil extractor 21. A clamp 231 is hingedly connected to the connecting frame 24. The bottom of the clamp 231 can limit the movement of the top of the air release valve 25. When the soil extractor 21 moves downward, the clamp 231 is no longer connected to the top of the air release valve 25, allowing the soil extractor 21 to be smoothly inserted into the roadbed. The air release valve 25 is then pulled upward, so that the bottom of the air release valve 25 is in contact with the top of the soil extractor 21, thereby sealing the top of the soil extractor 21. The clamp 231 is then clamped to the top of the air release valve 25, limiting the downward movement of the air release valve 25 and preventing the soil from separating from the soil extractor 21 when the soil extractor 21 is raised, allowing the soil block to be removed smoothly.

[0027] When the soil extractor 21 is at its highest point, the weighing mechanism 3 is located below the soil extractor 21. The weighing mechanism 3 includes a movable frame 31 and an electronic scale 32. The electronic scale 32 is fixed to the top of the movable frame 31, and the movable frame 31 passes through the front frame 11. The movable frame 31 slides in the front frame 11, and the movable frame 31 drives the electronic scale to move when it moves. When the soil extractor 21 is performing a soil extracting operation, the movable frame 31 is pulled to the outside of the front frame 11 so that the soil extractor 21 can smoothly extract soil. After extracting soil, the electronic scale 32 is moved below the soil extractor 21, and then the clamp 231 is detached from the top of the air release valve 25, allowing air to enter the top of the soil extractor 21. The soil in the soil extractor 21 falls onto the electronic scale 32 under the action of gravity, and the weight of the soil sample is obtained on the electronic scale 32.

[0028] A groove 121 is provided on one side of the middle frame 12, and one end of the mobile frame 31 can be inserted into the groove 121. When the mobile frame 31 is inserted into the groove 121, the mobile frame 31 can be stably supported, preventing the electronic scale 32 from shaking when weighing the soil sample, so that the data obtained by the electronic scale 32 is more accurate.

[0029] like Figure 4As shown, after the soil sampling mechanism 2 has finished sampling the soil, the device is moved so that the water bag 42 is placed above the drilled hole. The water bag 42 is made of a flexible, waterproof material. The bottom of the water bag 42 can be placed in the sampling hole drilled by the soil sampler 21. The opening diameter of the water bag 42 is larger than the diameter of the soil sampler 21. The front end of the clamp 41 is composed of two annular clamping pieces. The clamp 41 clamps the opening of the water bag 42. The front end of the clamp 41 is a lock. When installing the water bag 42, the lock is opened and the water bag 42 is placed between the two clamping pieces. Then, the lock is locked to secure the water bag 42. The water bag 42 is ductile and puncture-resistant. The water bag 42 can avoid being punctured by stones in the soil sampling hole. After water is added, the side wall of the water bag 42 can fit tightly against the inner wall of the sampling hole.

[0030] The rear end of the water bag 42 is provided with a rectangular block 411, which is positioned below the rear frame 13. A sliding rod 412 is mounted on the rectangular block 411, which extends through the rear frame 13. The sliding rod 412 is provided with threads 413, which are threaded onto a limit nut 414. The rear frame 13 has a hole with a diameter larger than the outer diameter of the sliding rod 412 but smaller than the outer diameter of the limit nut 414. When the limit nut 414 is engaged with the threads 413, it prevents the sliding rod 412 and the rectangular block 411 from sliding downward. At this point, the top of the clamp 41 is at a high position. To measure the volume of the soil sampling hole, the limit nut 414 is twisted upward to disengage from the threads 413. The sliding rod 412 drives the rectangular frame and the clamp 41 downward. When the clamp 41 contacts the ground, it stops moving, and the bottom of the water bag 42 enters the soil sampling hole.

[0031] The irrigation mechanism 5 also includes a water pumping pipe 53 and a water pump 54. The water outlet pipe 52 is arranged at the lower part of the water tank 51. The water outlet pipe 52 is provided with a valve 521. The water pump 54 is arranged at the top of the water tank 51. The water pump 54 is connected to the water pumping pipe 53. The water pump 53 is a hose. The water tank 51 is arranged on the side wall of the mobile bracket 1. The water tank 51 is a transparent box body and a scale line 511 is provided on the water tank 51. When the clamp 41 is on the ground and the water bag 42 is in the soil sampling hole, the valve 521 is opened to allow water to flow into the water bag 42 from the water outlet pipe 52. The water bag 42 is filled with water and fits the inner wall of the sampling hole. After the water is flush with the soil sampling hole, the valve 521 is closed. At this time, the water level scale change is recorded to obtain the soil sampling hole volume. The on-site soil density is obtained by dividing the soil weight by the volume, and the compaction degree is obtained by comparing it with the maximum density of the soil measured in the laboratory; after obtaining the compaction degree, the water pump 54 is started to recover the water in the water bag 42 to the water tank 51 through the water pump 53 to complete the compaction degree measurement.

[0032] The mobile bracket 1 is provided with a control panel 14 , which is electrically connected to the telescopic rod 22 and the water pump 54 . The control panel 14 controls the start and stop of the telescopic rod and the water pump 54 .

[0033] This device integrates the components of the water filling method, such as the soil taking mechanism 2, the weighing mechanism 3 and the water filling mechanism 5, on the mobile bracket 1, which is convenient for carrying during on-site tests. The test equipment is fixed in position, which is convenient for test personnel to operate, improves the test efficiency, avoids the loss of components required for the test, and eliminates the need to count the components.

[0034] Finally, it should be noted that the above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention. Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art will be able to modify the technical solutions described in the aforementioned embodiments or replace some of the technical features therein with equivalents. Any modifications, equivalent replacements, improvements, etc. made within the spirit and principles of the present invention shall be included within the scope of protection of the present invention.

Claims

1. A test device for measuring road compaction, characterized in that: include: A mobile support (1), comprising a front frame (11), a middle frame (12) and a rear frame (13); A soil taking mechanism (2), the soil taking mechanism (2) being arranged between the front frame (11) and the middle frame (12), the soil taking mechanism (2) comprising a soil taking device (21) and a telescopic rod (22), the telescopic rod (22) driving the soil taking device (21) to move; A weighing mechanism (3), wherein the weighing mechanism (3) is slidably connected between the front frame (11) and the middle frame (12); A water holding mechanism (4), the water holding mechanism (4) comprising a clamp (41) and a water bag (42), the clamp (41) clamping the top of the water bag (42); A water filling mechanism (5), the water filling mechanism (5) comprising a water tank (51) and a water outlet pipe (52), the water outlet pipe (52) being arranged above the water bag (42).

2. A road compaction test device according to claim 1, characterized in that: The soil taking mechanism (2) further comprises a support frame (23), a connecting frame (24) and an air release valve (25), wherein the support frame (23) is located on the upper portion of the movable bracket (1), the fixed end of the telescopic rod (22) is arranged on the support frame (23), the top of the connecting frame (24) is fixedly connected to the telescopic end of the telescopic rod (22), the bottom of the connecting frame (24) is fixedly connected to the soil taking device (21), and the air release valve (25) is arranged on the top of the soil taking device (21).

3. A road compaction testing device according to claim 2, characterized in that: The bottom of the air release valve (25) is inside the soil extractor (21), and the top of the air release valve (25) is on the upper part of the soil extractor (21). A clamp (231) is hinged on the connecting frame (24), and the bottom of the clamp (231) can limit the movement of the top of the air release valve (25).

4. A road compaction test device according to claim 3, characterized in that: The weighing mechanism (3) comprises a movable frame (31) and an electronic scale (32), wherein the electronic scale (32) is fixedly connected to the top of the movable frame (31), and the movable frame (31) passes through the front frame (11).

5. A road compaction test device according to claim 4, characterized in that: A groove (121) is provided on one side of the middle frame (12), and one end of the movable frame (31) can be inserted into the groove (121).

6. A road compaction testing device according to claim 5, characterized in that: The water bag (42) is made of a flexible waterproof material. The opening diameter of the water bag (42) is larger than the diameter of the soil extractor (21). The front end of the clamp (41) is composed of two annular clamping pieces. The clamp (41) clamps the opening of the water bag (42).

7. A road compaction testing device according to claim 6, characterized in that: A rectangular block (411) is provided at the rear end of the water bag (42), and the rectangular block (411) is provided below the rear frame (13). A sliding rod (412) is provided on the rectangular block (411), and the sliding rod (412) passes through the rear frame (13). A thread (413) is provided on the sliding rod (412), and a limiting nut (414) is screwed onto the thread (413).

8. A road compaction testing device according to claim 7, characterized in that: The water filling mechanism (5) further comprises a water pumping pipe (53) and a water pump (54); the water outlet pipe (52) is arranged at the lower part of the water tank (51); a valve (521) is provided on the water outlet pipe (52); the water pump (54) is arranged at the top of the water tank (51); the water pump (54) is connected to the water pumping pipe (53); and the water pumping pipe (53) is a hose.

9. A road compaction testing device according to claim 8, characterized in that: The water tank (51) is arranged on the side wall of the movable bracket (1); the water tank (51) is a transparent box; and scale lines (511) are provided on the water tank (51).

10. A road compaction testing device according to claim 9, characterized in that: The mobile bracket (1) is provided with a control panel (14), and the control panel (14) is electrically connected to the telescopic rod (22) and the water pump (54).

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