Road compactness test detection device

Abstract

The utility model relates to the technical field of road detection, and discloses a road compactness test detection device which comprises a bottom plate provided with an adjusting assembly, the bottom plate is provided with a through hole in the vertical direction, the upper end of the bottom plate is rotationally provided with a first supporting rod and a second supporting rod, and the first supporting rod and the second supporting rod are oppositely arranged on the two sides of the through hole respectively; the first lifting assembly is arranged on the first supporting rod, and the lifting end of the first lifting assembly is connected with the fixing plate; the rotating motor is connected with the upper end of the fixing plate, and an output shaft penetrates through the fixing plate and is in transmission connection with the connecting rod; the polishing sheet is connected with the lower end of the connecting rod; the second lifting assembly is arranged on the second supporting rod, and the lifting end of the second lifting assembly is connected with the extension rod; the soil sampling cutting ring is connected with the lower end of the extension rod, and an opening of the soil sampling cutting ring faces the ground. In the sampling process, soil on the surface layer of a point to be detected can be removed, and the accuracy of detection data is improved.

Description

Technical Field

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

[0002] Compaction degree is one of the key indicators for quality inspection of roadbed and pavement construction. It characterizes the density after on-site compaction. The higher the compaction degree, the greater the density and the better the overall performance of the material. For roadbed, semi-rigid base course and granular flexible base course, compaction degree refers to the ratio of the actual dry density achieved on-site to the maximum dry density obtained from the indoor standard compaction test. For asphalt surface course and asphalt stabilized base course, compaction degree refers to the ratio of the density achieved on-site to the indoor standard density.

[0003] Patent CN221123890U discloses a road compaction testing device. In use, the device is transported to the testing location. Stabilizing blocks and multiple sets of fixing bolts enhance the overall stability of the device on the ground. After installation, the drive motor is turned on, and it drives the spiral rod under the annular sleeve to rotate via a transmission rod. Then, the power switch of the hydraulic cylinder is turned on, activating the hydraulic pump. The hydraulic pump pressurizes hydraulic oil into the hydraulic cylinder, causing the hydraulic rod to rise and fall. Simultaneously, the lifting plate mounted on the hydraulic rod rises and falls, causing the spiral rod to descend. When digging a pit to extract soil from the ground road, the hydraulic rod drives the auger to rotate up and down on its own. At this time, the servo motor switch on one side can be turned on. The output end of the servo motor drives the core sampler to rotate. Then, the operator can control the outer plate of the servo motor to slide down on the sliding rod, allowing the core sampler to rotate into the ground road and drill soil samples from the ground road to obtain soil cores for testing and analysis. The soil brought out by the auger is swept from the soil receiving box into the soil ring box on one side. The soil ring box is removed through the slot and the block to test the compaction of the soil inside. At the same time, the soil core extracted by the core sampler is tested. However, this device has the following drawbacks in use. When performing core drilling to obtain soil samples, in order to ensure the accuracy and reliability of the final compaction test data, it is necessary to first remove the surface soil of the test point, which is greatly affected by the external environment and has unstable properties. However, the device is not equipped with a special surface soil removal structure. This means that in actual operation, if the staff wants to remove the surface soil, they can only use additional tools, such as shovels, to manually remove it. This not only consumes additional time and manpower, but is also very likely to introduce new error factors due to improper operation. For example, it is difficult to ensure that the depth and range of removal are accurate and consistent when manually removing the surface soil. Different operators have different understandings of "surface" and different operating standards, which may lead to incomplete removal of the surface soil at some test points. This makes the sample unable to truly reflect the compaction status of the deep soil, thus causing the test data to be distorted.

[0004] Therefore, how to remove the surface soil of the test point during the sampling process and increase the accuracy of the test data has become a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The present invention aims to provide a road compaction testing device to overcome the shortcomings mentioned above.

[0006] To achieve the above objectives, the technical solution of this utility model is: a road compaction testing device, comprising:

[0007] The base plate is equipped with an adjustment component and has a through hole in the vertical direction. A first support rod and a second support rod are rotatably provided at the upper end of the base plate, and the first support rod and the second support rod are respectively arranged opposite to each other on both sides of the through hole.

[0008] The first lifting assembly is mounted on the first support rod, and its lifting end is connected to the fixed plate.

[0009] A rotary motor is connected to the upper end of a fixed plate, and its output shaft passes through the fixed plate and the connecting rod for transmission.

[0010] The grinding disc is connected to the lower end of the connecting rod;

[0011] The second lifting assembly is mounted on the second support rod, and its lifting end is connected to the extension rod; and

[0012] The soil sampling ring cutter is connected to the lower end of the extension rod, and its opening faces the ground.

[0013] Furthermore, a sliding groove is provided vertically inside the first support rod. The first lifting assembly includes a first screw, a drive motor, and a first slider. The two ends of the first screw are rotatably connected to the upper end and the lower end of the sliding groove, respectively. The drive motor is installed inside the first support rod. The output shaft of the drive motor passes through the first support rod and is connected to the first screw. The first screw and the first slider are threadedly connected. The end of the first slider away from the first screw protrudes from the sliding groove, and one end of the first screw is connected to a fixed plate.

[0014] Furthermore, a support frame is provided on the side wall of the second support rod in the vertical direction. The second lifting assembly includes a second screw, a guide rod, a first motor, and a second slider. The second screw and the guide rod are both arranged vertically inside the support frame and are arranged opposite to each other. The two ends of the second screw are rotatably connected to the upper end and the lower end of the support frame, respectively. The two ends of the guide rod are fixedly connected to the upper end and the lower end of the support frame, respectively. The first motor is arranged at the upper end of the support frame, and the output shaft of the first motor passes through the upper end of the support frame and is connected to the second screw for transmission. The second screw is threadedly connected to the second slider, and the second slider is slidably connected to the guide rod. The lower end of the second slider is connected to the extension rod.

[0015] Furthermore, a second motor is provided at the upper end of the second slider, and the output shaft of the second motor passes through the second slider and is connected to the extension rod for transmission.

[0016] Furthermore, at least one locking member is hinged to the upper end of the base plate, one of which selectively abuts against the first support rod, and the other locking member selectively abuts against the second support rod.

[0017] Furthermore, the longitudinal section of the locking member is U-shaped, with one of the locking members' longitudinal sections matching the transverse section of the first support rod, and the other locking member's longitudinal section matching the transverse section of the second support rod.

[0018] Furthermore, the base plate is provided with at least one adjustment component, the adjustment component including a third screw and an end plate, one end of the third screw being threaded through the base plate and fixedly connected to the end plate, and the end plate facing the ground.

[0019] Furthermore, a dust cover is provided at the upper end of the base plate, and the dust cover and the base plate are detachably connected by a snap fastener.

[0020] Furthermore, a handle is provided at the upper end of the fixing plate, and the rotary motor is located in the recess of the handle.

[0021] Compared with existing technologies, this invention has at least the following advantages: In use, the device is first moved to the location of the road to be tested. The first support is rotated to align the grinding disc with the through hole. The rotary motor is started, driving the grinding disc to rotate at high speed. Simultaneously, the first lifting component begins operation, causing the grinding disc to extend and retract into the through hole. Then, the surface soil of the test point is cleaned. Workers then blow away any remaining dust from the test point and the device to ensure subsequent operations are not interfered with by dust. After cleaning, the grinding disc is raised, and the first support rod is rotated to offset the grinding disc from the through hole. Next, the second support rod is rotated to align the soil sampling ring with the through hole in preparation for sampling. At this point, the second lifting component is activated, causing the soil sampling ring to extend into the soil layer to be tested for soil sampling. Because of the grinding disc, this invention can remove soil layers on the surface of the test point that are significantly affected by the external environment before sampling. This not only meets the requirements for high-precision soil sampling but also helps improve the authenticity of the test samples, thereby enhancing the accuracy of the test data. Attached Figure Description

[0022] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0023] Figure 1 This is a schematic diagram of the overall structure of the road compaction testing device of this utility model;

[0024] Figure 2 This is a schematic diagram of part of the road compaction testing device of this utility model;

[0025] Figure 3 This is a cross-sectional view of a portion of the road compaction testing device of this utility model;

[0026] Figure 4 This is a schematic diagram of the structure of the first support rod and the first lifting assembly of this utility model;

[0027] Figure 5 This is a schematic diagram of the structure of the second support rod and the second lifting assembly of this utility model.

[0028] Reference numerals: 1. Base plate; 2. Through hole; 3. First support rod; 4. Second support rod; 5. Fixing plate; 6. Rotary motor; 7. Connecting rod; 8. Grinding disc; 9. Extension rod; 10. Soil-collecting ring cutter; 11. Slide groove; 12. First screw; 13. First slider; 14. Support frame; 15. Second screw; 16. Guide rod; 17. First motor; 18. Second slider; 19. Second motor; 20. Locking element; 21. Third screw; 22. End plate; 23. Dust cover; 24. Buckle; 25. Handle. Detailed Implementation

[0029] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0030] To make the above-mentioned objectives, features and advantages of this utility model more apparent and understandable, the utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0031] Reference Figure 2 This utility model provides a road compaction test device, including a base plate 1 with an adjustment component, which has a through hole 2 in the vertical direction. This through hole 2 plays a key role in subsequent operations. The upper end of the base plate 1 is rotatably equipped with a first support rod 3 and a second support rod 4, which are respectively arranged opposite to each other on both sides of the through hole 2. A first lifting component is arranged on the first support rod 3, and its lifting end is connected to a fixed plate 5. A rotary motor 6 is connected to the upper end of the fixed plate 5, and its output shaft passes through the fixed plate 5 and is connected to a connecting rod 7. When the rotary motor 6 is started, it can drive the grinding disc 8 to rotate at high speed for grinding the surface of the test point. The grinding disc 8 is connected to the lower end of the connecting rod 7. The grinding disc 8 is aligned with the through hole 2. The first lifting component drives the grinding disc 8 to extend and retract through the through hole 2, thereby cleaning the surface soil of the test point. After the cleaning process is completed, the staff will use a blower (not shown in the figure) to blow away the dust remaining on the test point and its surroundings, as well as on the device, to ensure that subsequent operations are not affected by dust. The second lifting component is installed on the second support rod 4. Its lifting end is connected to the extension rod 9. The soil sampling ring 10 is connected to the lower end of the extension rod 9, and the opening of the soil sampling ring 10 faces the ground. The soil sampling ring 10 is used to accurately sample soil to detect the road compaction.

[0032] Reference Figure 2-4The first support rod 3 has a vertical groove 11 inside. The first lifting assembly includes a first screw 12, a drive motor (not shown in the figure), and a first slider 13. The two ends of the first screw 12 are rotatably connected to the upper end and the lower end of the groove 11, respectively. The drive motor is installed inside the first support rod 3. The output shaft of the drive motor passes through the first support rod 3 and is connected to the first screw. The first screw 12 and the first slider 13 are threaded together. The end of the first slider 13 away from the first screw 12 protrudes from the groove 11, and the end of the first screw 12 is connected to the fixing plate 5. When the first screw 12 rotates, the first slider 13 will move up and down along the groove 11, and drive the fixing plate 5 to move up and down.

[0033] Reference Figure 2 , Figure 3 , Figure 5 The second support rod 4 has a support frame 14 vertically arranged on its side wall. The second lifting assembly includes a second screw 15, a guide rod 16, a first motor 17, and a second slider 18. The second screw 15 and the guide rod 16 are both vertically arranged inside the support frame 14 and are positioned opposite each other. The two ends of the second screw 15 are rotatably connected to the upper end and the lower end of the support frame 14, respectively. The two ends of the guide rod 16 are fixedly connected to the upper end and the lower end of the support frame 14, respectively. The first motor 17 is located on the upper end of the support frame 14. The output shaft of the first motor 17 passes through the upper end of the support frame 14 and is connected to the second screw 15. The second screw 15 is threadedly connected to the second slider 18. The second slider 18 is slidably connected to the guide rod 16. The lower end of the second slider 18 is connected to the extension rod 9. When the first motor 17 starts running, it will drive the second screw 15 to rotate. During this process, the second slider 18 can smoothly move up and down in the vertical direction, and the extension rod 9 connected to the second slider 18 will move together with the second slider 18. The movement trajectory and speed of the two are consistent.

[0034] The upper end of the second slider 18 is equipped with a second motor 19. The output shaft of the second motor 19 passes through the second slider 18 and is connected to the extension rod 9. The soil-removing ring cutter 10 rotates under the drive of the second motor 19, making the soil-removing operation more convenient.

[0035] Reference Figure 2 To ensure the stability of the first support rod 3 and the second support rod 4 during operation, two locking parts 20 are hinged to the upper end of the base plate 1. One locking part 20 selectively abuts against the first support rod 3, and the other locking part 20 selectively abuts against the second support rod 4.

[0036] The longitudinal section of the locking member 20 is U-shaped. The longitudinal section of one locking member 20 is adapted to the transverse section of the first support rod 3, and the longitudinal section of the other locking member 20 is adapted to the transverse section of the second support rod 4. The transverse sections of the first support rod 3 and the second support rod 4 are both square.

[0037] Before sampling, the locking device 20 is released from the first support rod 3, the first support rod 3 is rotated, the grinding disc 8 is aligned with the through hole 2, and then the grinding disc 8 cleans the surface soil of the test point. After cleaning, the grinding disc 8 is raised, and then the first support rod 3 is rotated to offset the grinding disc 8 from the through hole 2. At this time, the locking device 20 is used to lock the first support rod 3. Then the second support rod 4 is rotated, and the soil sampling ring 10 is aligned with the through hole 2 for sampling. During the rotation operation of the first support rod 3 and the second support rod 4, all components installed on the first support rod 3 and the second support rod 4 can always maintain a safe distance, effectively avoiding mutual collision.

[0038] Reference Figure 1-2 The base plate 1 is equipped with four adjustment components, including a third screw 21 and an end plate 22. One end of the third screw 21 is threaded through the base plate 1 and fixedly connected to the end plate 22, with the end plate 22 facing the ground. The operator can adjust the distance between the end plate 22 and the ground by rotating the third screw 21, thereby achieving the horizontal adjustment of the base plate 1 and ensuring that the entire device can work stably under different road surface conditions.

[0039] To protect the internal components of the device and prevent dust and other impurities from interfering with the detection accuracy, a dust cover 23 is provided on the upper end of the base plate 1. The dust cover 23 and the base plate 1 are detachably connected by a buckle 24, which makes it convenient for the staff to open the dust cover 23 when the device needs to be operated and to close it in time after the operation is completed, thus achieving a good protective effect.

[0040] A handle 25 is provided on the upper end of the fixing plate 5, and the rotating motor 6 is located in the recess of the handle 25.

[0041] The working principle of this utility model is as follows: When in use, the device first needs to be moved to the road point to be tested. The staff can adjust the distance between the end plate 22 and the ground by rotating the third screw 21, thereby realizing the horizontal adjustment of the base plate 1 and ensuring that the entire device can be placed stably under different road surface conditions, laying the foundation for subsequent accurate testing.

[0042] After completing the leveling adjustment, open the dust cover 23.

[0043] Before sampling, the locking device 20 is released from the first support rod 3. The first support rod 3 is rotated to align the grinding disc 8 with the through hole 2. The rotary motor 6 is started to drive the grinding disc 8 to rotate at high speed. At the same time, the first lifting assembly starts to operate. In the first lifting assembly, the drive motor drives the first screw 12 to rotate, thereby driving the first slider 13 to move up and down along the slide groove 11. The fixed plate 5 connected to it also moves up and down. The grinding disc 8 extends and retracts through the through hole 2. Then, the surface soil of the test point is cleaned. During this process, the staff holds the handle 25 to assist in the cleaning of the grinding disc 8.

[0044] After the cleaning process is completed, raise the grinding disc 8, rotate the first support rod 3 to offset the grinding disc 8 from the through hole 2, and use the locking part 20 to lock the first support rod 3 again. Then rotate the second support rod 4 to align the soil sampling ring cutter 10 with the through hole 2 in preparation for sampling.

[0045] During sampling, the first motor 17 is started. The first motor 17 is located on the upper end of the support frame 14. It drives the second screw 15 to rotate. The second slider 18, which is threaded to the second screw 15, will rise and fall smoothly along the vertical guide rod 16. The extension rod 9 and the soil sampling ring 10 connected to the lower end of the second slider 18 will move accordingly. At the same time, the second motor 19 is started. The second motor 19 drives the soil sampling ring 10 to rotate, making the soil sampling operation more convenient and accurate.

[0046] After the entire operation is completed, the staff used a hair dryer to blow away the dust remaining on the test point and the device to prevent dust from interfering with subsequent use. Finally, the dust cover 23 was closed to protect the internal components of the device.

[0047] In the description of this utility model, it should be understood that the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this utility model and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.

[0048] The embodiments described above are merely preferred embodiments of the present utility model and are not intended to limit the scope of the present utility model. Various modifications and improvements made to the technical solutions of the present utility model by those skilled in the art without departing from the spirit of the present utility model should fall within the protection scope defined by the claims of the present utility model.

Claims

1. A road compaction testing device, characterized in that, include: The base plate (1) is equipped with an adjustment component and has a through hole (2) in the vertical direction. A first support rod (3) and a second support rod (4) are rotatably provided on the upper end of the base plate (1), and the first support rod (3) and the second support rod (4) are respectively arranged opposite to each other on both sides of the through hole (2). The first lifting assembly is mounted on the first support rod (3), and its lifting end is connected to the fixed plate (5); A rotary motor (6) is connected to the upper end of a fixed plate (5), and its output shaft passes through the fixed plate (5) and the connecting rod (7) for transmission connection; A grinding disc (8) is connected to the lower end of a connecting rod (7); The second lifting assembly is mounted on the second support rod (4), and its lifting end is connected to the extension rod (9); and The soil sampling ring cutter (10) is connected to the lower end of the extension rod (9), and its opening faces the ground.

2. The road compaction testing device according to claim 1, characterized in that, The first support rod (3) has a vertical groove (11) inside. The first lifting assembly includes a first screw (12), a drive motor and a first slider (13). The two ends of the first screw (12) are rotatably connected to the upper end and the lower end of the groove (11) respectively. The drive motor is installed inside the first support rod (3). The output shaft of the drive motor passes through the first support rod (3) and is connected to the first screw. The first screw (12) and the first slider (13) are threaded together. The end of the first slider (13) away from the first screw (12) protrudes from the groove (11), and one end of the first screw (12) is connected to the fixing plate (5).

3. The road compaction testing device according to claim 2, characterized in that, The side wall of the second support rod (4) is provided with a support frame (14) in the vertical direction. The second lifting assembly includes a second screw (15), a guide rod (16), a first motor (17), and a second slider (18). The second screw (15) and the guide rod (16) are both arranged in the vertical direction within the support frame (14), and the second screw (15) and the guide rod (16) are arranged opposite to each other. The two ends of the second screw (15) are respectively rotatably connected to the upper end and the lower end of the support frame (14). The two ends of the guide rod (16) are fixedly connected to the upper end and the lower end of the support frame (14) respectively. The first motor (17) is arranged on the upper end of the support frame (14), and the output shaft of the first motor (17) passes through the upper end of the support frame (14) and is connected to the second screw (15) for transmission. The second screw (15) is threadedly connected to the second slider (18). The second slider (18) and the guide rod (16) are slidably connected. The lower end of the second slider (18) is connected to the extension rod (9).

4. The road compaction testing device according to claim 3, characterized in that, The upper end of the second slider (18) is provided with a second motor (19), and the output shaft of the second motor (19) passes through the second slider (18) and the extension rod (9) for transmission connection.

5. The road compaction testing apparatus according to any one of claims 1 to 4, characterized in that, At least one locking member (20) is hinged to the upper end of the base plate (1), one of the locking members (20) selectively abuts against the first support rod (3), and the other locking member (20) selectively abuts against the second support rod (4).

6. The road compaction testing device according to claim 5, characterized in that, The longitudinal section of the locking member (20) is U-shaped. The longitudinal section of one of the locking members (20) is adapted to the transverse section of the first support rod (3), and the longitudinal section of the other locking member (20) is adapted to the transverse section of the second support rod (4).

7. The road compaction testing apparatus according to any one of claims 1 to 4, characterized in that, The base plate (1) is provided with at least one adjustment component, which includes a third screw (21) and an end plate (22). One end of the third screw (21) is threaded through the base plate (1) and fixedly connected to the end plate (22), and the end plate (22) faces the ground.

8. The road compaction testing apparatus according to any one of claims 1 to 4, characterized in that, The upper end of the base plate (1) is provided with a dust cover (23), and the dust cover (23) and the base plate (1) are detachably connected by a buckle (24).

9. The road compaction testing apparatus according to any one of claims 1 to 4, characterized in that, The upper end of the fixing plate (5) is provided with a handle (25), and the rotary motor (6) is located in the recess of the handle (25).

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