A highway pavement compression resistance detection device

Abstract

The utility model provides a kind of highway pavement compression detection device, including base, base is provided with lifting mechanism, lifting mechanism is connected with crosspiece, support assembly is provided in crosspiece lower bottom, pressure reducing mechanism and detection assembly are provided in support assembly lower end;Universal pulley is provided in base bottom end, and through hole corresponding with pressure reducing mechanism is opened in base. The utility model is simple in structure, reasonable in design, can effectively solve the problem that sensor may not touch ground when height difference appears in ground, so as to unable to detect ground, and sensor has no buffer when directly contacting ground, easy to cause the damage of sensor.

Description

Technical Field

[0001] This utility model relates to the field of highway testing technology, specifically a highway pavement compressive strength testing device. Background Technology

[0002] Highway construction plays a vital role in urban development, and the quality of highway construction is a key concern for the entire society. Currently, with the development of highway transportation in my country, more and more highways are forming a comprehensive transportation network, and many new highways are put into use every year. Before each new highway is put into use, its usage and load-bearing capacity must be assessed to determine whether it is suitable for use.

[0003] Most road surface pressure testing devices on the market currently use pressure sensors to detect the road surface. However, when there is a height difference on the ground, the sensor may not be able to touch the ground, thus failing to detect the ground. Furthermore, there is no buffer when the sensor is in direct contact with the ground, which can easily cause damage to the sensor. Utility Model Content

[0004] The purpose of this invention is to provide a road surface compressibility testing device to solve the problems mentioned in the background art, such as the sensor not being able to touch the ground when there is a height difference, thus making it impossible to detect the ground, and the sensor being easily damaged when in direct contact with the ground without buffer.

[0005] To achieve the above objectives, this utility model provides the following technical solution:

[0006] A road surface compressibility testing device includes a base, a lifting mechanism on the base, a horizontal plate connected to the lifting mechanism, a support component at the bottom of the horizontal plate, a pressure-reducing mechanism and a testing component at the lower end of the support component; a universal pulley at the bottom of the base, and a through hole adapted to the pressure-reducing mechanism on the base.

[0007] The aforementioned highway pavement compressive strength testing device includes a lifting mechanism comprising a support frame mounted on the upper end of a base, a screw rod and a limiting rod passing through a horizontal plate mounted on the support frame, a motor connected to the screw rod mounted at the top of the support frame, and the motor being connected to a controller; a bearing and a bearing seat are mounted at the connection between the screw rod and the base.

[0008] The aforementioned highway pavement compressive strength testing device includes a support assembly comprising four support rods detachably connected to the bottom end of a horizontal plate, with a fixing plate provided below the support rods.

[0009] The aforementioned highway pavement compressibility testing device includes a pressure-reducing mechanism comprising a guide rod that slides through a support assembly, a pressure-reducing plate at the bottom end of the guide rod, and a pressure-reducing spring between the pressure-reducing plate and the support assembly.

[0010] The aforementioned highway pavement compressive strength testing device includes a testing component comprising a fixed rod mounted on a support component, with a pressure sensor detachably connected to the bottom end of the fixed rod via a thread.

[0011] Compared with the prior art, the beneficial effects of this utility model are:

[0012] This invention, employing the aforementioned structure, adjusts the sensor's contact distance with the ground by moving it up and down using a lifting mechanism, and further reduces the sensor's contact with the ground by a pressure-reducing mechanism. This invention features a simple and rationally designed structure, effectively addressing the problem that when there are height differences on the ground, the sensor may not be able to reach the ground, thus failing to detect it, and that the lack of buffering when the sensor directly contacts the ground can easily damage it. Attached Figure Description

[0013] Figure 1 This is a front view of a highway pavement compressive strength testing device.

[0014] Figure 2 This is a cross-sectional view of a highway pavement compressive strength testing device.

[0015] Figure 3 for Figure 1 Enlarged diagram of point A.

[0016] Figure 4 for Figure 2 Enlarged diagram of point B.

[0017] In the diagram: 1. Base; 2. Lifting mechanism; 201. Support frame; 202. Screw; 203. Limiting rod; 204. Motor; 3. Horizontal plate; 4. Support assembly; 401. Support rod; 402. Fixing plate; 5. Pressure reduction mechanism; 501. Guide rod; 502. Pressure reduction plate; 503. Pressure reduction spring; 6. Detection assembly; 601. Fixing rod; 602. Pressure sensor; 7. Universal pulley; 8. Through hole. Detailed Implementation

[0018] The technical solution of this patent will be further described in detail below with reference to specific embodiments.

[0019] Please see Figure 1-4A road surface compressibility testing device includes a base 1, a lifting mechanism 2 on the base 1, a horizontal plate 3 connected to the lifting mechanism 2, a support component 4 at the bottom of the horizontal plate 3, a pressure-reducing mechanism 5 and a testing component 6 at the lower end of the support component 4, which facilitates the cooperation between the lifting mechanism 2 and the horizontal plate 3 to move the support component 4, the pressure-reducing mechanism 5 and the testing component 6 up and down; a universal pulley 7 is provided at the bottom of the base 1 for easy movement; and a through hole 8 adapted to the pressure-reducing mechanism 5 is opened on the base 1 to facilitate the pressure-reducing mechanism 5 to pass through the base 1 and reach the ground.

[0020] Furthermore, the lifting mechanism 2 includes a support frame 201 mounted on the upper end of the base 1. A screw 202 and a limiting rod 203 passing through the horizontal plate 3 are mounted on the support frame 201 to move the horizontal plate 3 up and down. A motor 204 connected to the screw 202 is mounted at the top of the support frame 201. The rotation of the motor 204 drives the screw 202 to rotate. A bearing and a bearing seat are mounted at the connection between the screw 202 and the base 1.

[0021] Furthermore, the support assembly 4 includes four support rods 401 that are detachably connected to the bottom of the horizontal plate 3 for easy maintenance. A fixing plate 402 is provided below the support rods 401 to prevent the support rods 401 from shifting.

[0022] Furthermore, the pressure relief mechanism 5 includes a guide rod 501 that slides through the support assembly 4, a pressure relief plate 502 is provided at the bottom end of the guide rod 501, and a pressure relief spring 503 is provided between the pressure relief plate 502 and the support assembly 4 to limit the position of the pressure relief spring 503 and prevent the pressure relief spring 503 from over-displacement.

[0023] Furthermore, the detection component 6 includes a fixing rod 601 disposed at the lower end of the support component 4 for fixing the pressure sensor 602. The pressure sensor 602 is detachably connected to the bottom end of the fixing rod 601 by means of threads, which facilitates the removal and replacement of the pressure sensor 602.

[0024] The working principle of this utility model is as follows: During use, the motor 204 drives the horizontal plate 3 to move downwards in a forward direction. Then, the horizontal plate 3 drives the support rod 401 and the fixed plate 402 to move downwards. When it contacts the ground, the pressure relief plate 502 contacts the ground first. The pressure is reduced by the pressure relief spring 503 and the guide rod 501. Then, the pressure sensor 602 contacts the ground for detection. After the detection is completed, the motor 204 reverses to drive the horizontal plate 3 to move upwards. Then, the horizontal plate 3 drives the support rod 401, the fixed plate 402, the pressure relief plate 502, and the pressure sensor 602 to move upwards to complete the detection.

[0025] The preferred embodiments of this patent have been described in detail above. However, this patent is not limited to the above embodiments. Within the scope of knowledge possessed by those skilled in the art, various changes can be made without departing from the spirit of this patent.

Claims

1. A road surface compressive strength testing device, comprising a base (1), characterized in that, The base (1) is provided with a lifting mechanism (2), a horizontal plate (3) is connected to the lifting mechanism (2), a support component (4) is provided at the bottom of the horizontal plate (3), a pressure reducing mechanism (5) and a detection component (6) are provided at the lower end of the support component (4); a universal pulley (7) is provided at the bottom of the base (1), and a through hole (8) adapted to the pressure reducing mechanism (5) is provided on the base (1).

2. The highway pavement compression detection device according to claim 1, wherein, The lifting mechanism (2) includes a support frame (201) set on the upper end of the base (1), a screw (202) and a limiting rod (203) passing through the cross plate (3) are provided on the support frame (201), a motor (204) connected to the screw (202) is provided at the top of the support frame (201), and a bearing and a bearing seat are provided at the connection between the screw (202) and the base (1).

3. The highway pavement compression detection device of claim 1, wherein, The support assembly (4) includes four support rods (401) detachably connected to the bottom end of the horizontal plate (3), and a fixing plate (402) is provided below the support rods (401).

4. The highway pavement compression detection device of claim 1, wherein, The pressure relief mechanism (5) includes a guide rod (501) that slides through the support assembly (4), a pressure relief plate (502) is provided at the bottom end of the guide rod (501), and a pressure relief spring (503) is provided between the pressure relief plate (502) and the support assembly (4).

5. The highway pavement compression detection device of claim 1, wherein, The detection component (6) includes a fixing rod (601) disposed at the lower end of the support component (4), and a pressure sensor (602) is detachably connected to the bottom end of the fixing rod (601) by means of a thread.

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