Pavement strength testing device

Abstract

The utility model provides a pavement strength testing device, which relates to the technical field of pavement measurement, is mounted on a base and comprises a detection main body and a placement frame arranged on the detection main body, and a limiting component for limiting a pavement sample is arranged in the placement frame. A movable assembly for rotating the sample is further arranged at the bottom of the placement frame, the pavement sample can be rotated by directly rotating a movable column and rotating the movable column, and due to the fact that the movable column is arranged at the bottom of the placement frame, safety is higher in the adjusting process; and the overall adjustment and pavement sample testing process is carried out in the placement frame, and the placement frame can further prevent scraps from splashing in the testing process, so that the overall safety is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of road surface measurement, in particular to a road surface strength testing device. Background Art

[0002] The pavement strength test device is a device specially used to test the strength and stability of the road surface. Its main principle is to evaluate the strength and stability of the road surface by applying load and observing the deformation and load-bearing capacity of the test sample. This type of device plays a vital role in highway construction and maintenance, helping engineers and technicians understand the actual condition of the road surface and thus develop more reasonable maintenance and reinforcement plans.

[0003] The existing pavement strength testing device generally includes a base, a detection body and a placement piece. During use, the placement piece is usually set on the base. The pavement sample to be tested is placed inside the placement piece and tested by the detection body. The detection body is usually provided with a driving member, a mounting rod, a fixing plate and a sliding rod. Two sliding rods are usually provided, and the two sliding rods move through the driving member. The driving member can slide vertically on the two sliding rods. The sliding of the driving member will drive the mounting rod and the fixing plate to apply pressure to the pavement sample to be tested to achieve the test effect. However, in the existing test process, since the pavement sample is directly placed inside the placement piece, when it is necessary to apply force to the pavement sample at different angles, the pavement sample needs to be rotated. During the rotation process, since the manual rotation method is closer to the driving member, the overall device has certain safety hazards.

[0004] Therefore, it is necessary to provide a new pavement strength testing device to solve the above technical problems. Utility Model Content

[0005] In order to solve the above technical problems, the utility model provides a road surface strength testing device.

[0006] The pavement strength testing device provided by the utility model is installed on a base, and comprises a detection body and a placement frame arranged on the detection body, wherein a limiting component for limiting the pavement sample is arranged inside the placement frame, and a movable component for rotating the sample is also arranged at the bottom of the placement frame;

[0007] The movable component includes a support plate, a movable column and a pad block. The bottom end of the support plate is fixedly connected to the upper end of the base, the bottom end of the movable column is movably connected to the upper end of the support plate, and the end of the movable column away from the support plate is movably extended to the interior of the placement frame. A plurality of pad blocks are provided, and the plurality of pad blocks are fixedly arranged at one end of the movable column close to the placement frame. The edges of the plurality of pad blocks are arranged in an arc shape, and the adjacent side of the limit assembly is in contact with the outer side walls of the plurality of pad blocks.

[0008] Preferably, the limit assembly includes a threaded rod and a limit plate, and two limit plates are provided. The outer walls of the two limit blocks are in contact with the inner walls of the placement frame, and friction blocks are provided on the adjacent sides of the two limit plates. The bottom edges of the two limit plates are in contact with the outer walls of the multiple pads, and the upper ends of the two limit plates are fixedly connected to connecting blocks, and one end of the threaded rod can move through the two connecting blocks.

[0009] Preferably, the detection body includes a driving member, a mounting rod, a fixed plate and a sliding rod, and two sliding rods are provided. The bottom ends of the two sliding rods are fixedly connected to the upper end of the base, and both sliding rods are movable through the driving member, the bottom end of the driving member is fixedly connected to the upper end of the mounting rod, and the end of the mounting rod away from the driving member is fixedly connected to the upper end of the fixed plate.

[0010] Preferably, a control body is also provided at the upper end of the base.

[0011] Preferably, a plurality of support columns are fixedly connected to the bottom of the placement frame, and one end of the plurality of support columns away from the placement frame is fixedly connected to the upper end of the base.

[0012] Preferably, the outer side wall of the movable column is evenly and fixedly connected with a plurality of fixing handles.

[0013] Preferably, one end of the threaded rod is fixedly connected to a rotating disk.

[0014] Compared with the related art, the pavement strength testing device provided by the utility model has the following beneficial effects:

[0015] The device is provided with a movable column and a support plate. During the use of the entire device, the road surface sample to be tested is fixed by a limit assembly. During the process, the bottom of the road surface sample will contact the pad on the movable column. Since the edge of the pad is arranged in an arc shape, the arc-shaped edge can better adapt to the shape change of the contact surface, improve the fit between the pad and the contact surface of the road surface sample, help to increase the contact area, improve the friction efficiency, and thus optimize the overall friction performance. After the test is completed, if the road surface sample needs to be deflected, the movable column is directly rotated, and the rotation of the road surface sample can be achieved by rotating the movable column. Since the movable column is arranged at the bottom of the placement frame, the adjustment process is safer, and the overall adjustment and testing of the road surface sample are carried out inside the placement frame. The placement frame can further prevent the occurrence of splashing debris during the test process, thereby improving the overall safety. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the overall structure of the road surface strength testing device provided by the utility model;

[0017] Figure 2 for Figure 1 The enlarged view of point A is shown;

[0018] Figure 3 A schematic diagram of the partial structure of the road surface strength testing device provided by the utility model;

[0019] Figure 4 A schematic diagram of the active components provided by the utility model;

[0020] Figure 5 This is a schematic diagram of the limit assembly provided by the utility model.

[0021] Numbers in the figure: 1. placement frame; 2. sliding rod; 3. mounting rod; 4. control body; 5. support column; 6. base; 7. threaded rod; 8. rotating disk; 9. fixed plate; 10. limit plate; 11. connecting block; 12. movable column; 13. driving part; 14. support plate; 15. fixing handle; 16. pad; 17. friction block. DETAILED DESCRIPTION

[0022] The utility model is further described below in conjunction with the accompanying drawings and implementation modes.

[0023] Please refer to Figure 1 , Figure 2 , Figure 3 , Figure 4 as well as Figure 5 ,in, Figure 1 This is a schematic diagram of the overall structure of the road surface strength testing device provided by the utility model; Figure 2 for Figure 1 The enlarged view of point A is shown;

[0024] Figure 3 A schematic diagram of the partial structure of the road surface strength testing device provided by the utility model; Figure 4 A schematic diagram of the active components provided by the utility model; Figure 5 This is a schematic diagram of the limit assembly provided by the utility model.

[0025] In the specific implementation process, Figure 1-Figure 5 As shown, a road strength testing device is installed on a base 6, comprising a detection body and a placement frame 1 arranged on the detection body, wherein a limiting component for limiting the road surface sample is arranged inside the placement frame 1, and a movable component for rotating the sample is also arranged at the bottom of the placement frame 1;

[0026] The movable assembly includes a support plate 14, a movable column 12 and a cushion block 16. The bottom end of the support plate 14 is fixedly connected to the upper end of the base 6. The bottom end of the movable column 12 is rotatably connected to the upper end of the support plate 14. The end of the movable column 12 away from the support plate 14 is movably extended to the inside of the placement frame 1. A plurality of cushion blocks 16 are provided. The plurality of cushion blocks 16 are all fixedly provided at one end of the movable column 12 close to the placement frame 1. The edges of the plurality of cushion blocks 16 are all arranged in an arc shape. The adjacent side of the limit assembly contacts the outer side walls of the plurality of cushion blocks 16. The outer side wall of the movable column 12 is evenly fixedly connected with a plurality of fixed handles 15. The arrangement of the plurality of fixed handles 15 makes it more convenient to rotate the movable column 12.

[0027] The limiting assembly includes a threaded rod 7 and a limiting plate 10, two limiting plates 10 are provided, the outer side walls of the two limiting blocks are in contact with the inner side walls of the placement frame 1, the adjacent sides of the two limiting plates 10 are provided with friction blocks 17, the bottom edges of the two limiting plates 10 are in contact with the outer side walls of a plurality of pads 16, the upper ends of the two limiting plates 10 are fixedly connected with connecting blocks 11, one end of the threaded rod 7 passes through the two connecting blocks 11, and the threaded rod is threadedly connected with the two connecting blocks 11;

[0028] In the specific use process, the road surface sample to be tested is placed inside the placement frame 1, and the threaded rod 7 is rotated, so that the two connecting blocks 11 are driven to move in the adjacent direction, and the movement of the two connecting blocks 11 drives the two limiting plates 10 to move, and the road surface sample to be tested is fixed by the movement of the two limiting plates 10, and the friction block 17 can be provided to increase the friction between the limiting plate 10 and the road surface sample, thereby further improving the fixing effect;

[0029] Among them, since the two connecting blocks 11 are controlled to move synchronously by the threaded rod 7 at the same time, the movement amplitudes of the two connecting blocks 11 are consistent, so that when the road surface sample to be tested is finally fixed, the position of the road surface sample will always be in the middle position of the two limit plates 10, so that there will be no deviation during the detection process;

[0030] Specifically, the material of the friction block 17 is rubber;

[0031] The detection body includes a driving member 13, a mounting rod 3, a fixing plate 9 and a sliding rod 2. Two sliding rods 2 are provided. The bottom ends of the two sliding rods 2 are fixedly connected to the upper end of the base 6. Both sliding rods 2 are movable through the driving member 13. The bottom end of the driving member 13 is fixedly connected to the upper end of the mounting rod 3. The end of the mounting rod 3 away from the driving member 13 is fixedly connected to the upper end of the fixing plate 9.

[0032] A control body 4 is also provided at the upper end of the base 6, and a plurality of support columns 5 are fixedly connected to the bottom of the placement frame 1, and one end of the plurality of support columns 5 away from the placement frame 1 is fixedly connected to the upper end of the base 6, and the support columns 5 are provided to support and fix the position of the placement frame 1;

[0033] The threaded rod 7 mentioned above is a bidirectional threaded rod.

[0034] The working principle of the utility model is as follows: when the device is used, the road surface sample to be detected is first placed inside the placement frame 1, and the threaded rod 7 is rotated, so that the two connecting blocks 11 are driven to move in the adjacent direction, and the movement of the two connecting blocks 11 drives the two limiting plates 10 to move, and the road surface sample to be detected is fixed by the movement of the two limiting plates 10, and the friction block 17 can be provided to increase the friction between the limiting plate 10 and the road surface sample, thereby further improving the fixing effect;

[0035] When the limiting plate 10 is used to fix the road surface sample, the bottom of the road surface sample will contact the pad 16 on the movable column 12. Since the edge of the pad 16 is set to be an arc shape, the arc-shaped edge can better adapt to the shape change of the contact surface, improve the fit between the pad 16 and the contact surface of the road surface sample, and help increase the contact area. After the detection is completed, if the road surface sample needs to be deflected, the movable column 12 can be directly rotated to achieve the rotation of the road surface sample.

[0036] The circuits and controls involved in the present invention are all prior art and will not be described in detail here.

[0037] The above description is only an embodiment of the present invention, and does not limit the patent scope of the present invention. Any equivalent structure or equivalent process transformation made by using the contents of the specification and drawings of the present invention, or directly or indirectly applied in other related technical fields, are also included in the patent protection scope of the present invention.

Claims

1. A road surface strength testing device, which is mounted on a base (6) and is characterized in that: It comprises a detection body and a placement frame (1) arranged on the detection body, wherein a limiting component for limiting the position of a road surface sample is arranged inside the placement frame (1), and a movable component for rotating the sample is also arranged at the bottom of the placement frame (1); The movable component comprises a support plate (14), a movable column (12) and a cushion block (16); the bottom end of the support plate (14) is fixedly connected to the upper end of the base (6); the bottom end of the movable column (12) is movably connected to the upper end of the support plate (14); one end of the movable column (12) away from the support plate (14) movably extends to the inside of the placement frame (1); a plurality of cushion blocks (16) are provided, and the plurality of cushion blocks (16) are fixedly provided at one end of the movable column (12) close to the placement frame (1); the edges of the plurality of cushion blocks (16) are arranged in an arc shape; and the adjacent side of the limit assembly contacts the outer side walls of the plurality of cushion blocks (16).

2. The road surface strength testing device according to claim 1, characterized in that: The limiting assembly comprises a threaded rod (7) and a limiting plate (10), wherein two limiting plates (10) are provided, the outer side walls of the two limiting blocks are in contact with the inner side walls of the placement frame (1), the adjacent sides of the two limiting plates (10) are provided with friction blocks (17), the bottom edges of the two limiting plates (10) are in contact with the outer side walls of a plurality of the cushion blocks (16), the upper ends of the two limiting plates (10) are fixedly connected with a connecting block (11), and one end of the threaded rod (7) movably passes through the two connecting blocks (11).

3. The road surface strength testing device according to claim 2, characterized in that: The detection body comprises a driving member (13), a mounting rod (3), a fixing plate (9) and a sliding rod (2). Two sliding rods (2) are provided, the bottom ends of the two sliding rods (2) are fixedly connected to the upper end of the base (6), the two sliding rods (2) are movable through the driving member (13), the bottom end of the driving member (13) is fixedly connected to the upper end of the mounting rod (3), and the end of the mounting rod (3) away from the driving member (13) is fixedly connected to the upper end of the fixing plate (9).

4. The road surface strength testing device according to claim 3, characterized in that: A control body (4) is also provided at the upper end of the base (6).

5. The road surface strength testing device according to claim 4, characterized in that: A plurality of support columns (5) are fixedly connected to the bottom of the placement frame (1), and one end of the plurality of support columns (5) away from the placement frame (1) is fixedly connected to the upper end of the base (6).

6. The road surface strength testing device according to claim 5, characterized in that: The outer side wall of the movable column (12) is evenly and fixedly connected with a plurality of fixing handles (15).

7. The road surface strength testing device according to claim 6, characterized in that: One end of the threaded rod (7) is fixedly connected to a rotating disk (8).

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