Clamping device for pavement material strength detection equipment

Abstract

The utility model provides a clamping device for pavement material strength detection equipment. The clamping device comprises two clamping mechanisms, the two clamping mechanisms are symmetrically arranged left and right; the clamping mechanism comprises a mounting plate, a fixed base, a push plate structure, a pushing mechanism, two wedge-shaped clamping mechanisms and two clamping assemblies, the fixed base is arranged on the upper end face of the mounting plate, the two wedge-shaped clamping mechanisms are symmetrically arranged at the front end and the rear end of the fixed base, and the fixed ends of the wedge-shaped clamping mechanisms are fixedly connected with the fixed base; the output end of the pushing mechanism drives the moving end of the wedge-shaped clamping mechanism through a pushing plate structure. According to the clamping device for the pavement material strength detection equipment disclosed by the utility model, the problem that the accuracy of a test result is influenced due to the fact that the clamping device of the detection equipment in the related technology is likely to loosen or shift in a high-load or long-time test is solved.

Description

Technical Field

[0001] This utility model belongs to the field of road material testing technology, and in particular relates to a clamping device for road material strength testing equipment. Background Technology

[0002] Pavement material strength testing equipment is an instrument used to evaluate the mechanical properties of pavement materials (such as asphalt mixtures, concrete, and soil). It is primarily used for mechanical property analysis, construction quality control, and material mix optimization. Pavement materials endure repeated loads from traffic flow over extended periods, especially on highways, heavy-duty transport routes, or airport runways, where they experience extreme dynamic or static loads. To simulate real-world conditions, high-load and long-term tests are necessary to verify the material's ability to withstand these complex loads without premature failure. However, in related technologies, the clamping devices in testing equipment may loosen or shift during high-load or long-term testing, affecting the accuracy of test results, particularly in high-frequency vibration loading tests. Summary of the Invention

[0003] In view of this, the present invention aims to at least partially solve one of the related technical problems.

[0004] To achieve the above objectives, the technical solution of this utility model is implemented as follows:

[0005] A clamping device for a road material strength testing equipment includes two clamping mechanisms;

[0006] The two clamping mechanisms are arranged symmetrically on the left and right sides;

[0007] The clamping mechanism includes a mounting plate, a fixed base, a push plate structure, a pushing mechanism, two wedge clamping mechanisms, and two clamping assemblies. The fixed base is disposed on the upper end surface of the mounting plate. The two wedge clamping mechanisms are symmetrically disposed at the front and rear ends of the fixed base. The fixed ends of the wedge clamping mechanisms are fixedly connected to the fixed base. The output end of the pushing mechanism drives the moving ends of the wedge clamping mechanisms through the push plate structure.

[0008] The moving end of the wedge clamping mechanism is detachably connected to the clamping assembly, which is used to clamp and position the road surface material to be tested.

[0009] Furthermore, the wedge clamping mechanism includes an inclined plate, a guide structure, and a wedge push block. The inclined plate is fixedly connected to the end of the fixed base. The wedge push block is slidably engaged with the inclined plate through the guide structure. The tail of the wedge push block is slidably engaged with the push plate structure. The top of the wedge push block is detachably connected to the clamping assembly.

[0010] Furthermore, the guide structure includes a movable slide groove and a guide rail. The movable slide groove is disposed on the inner end face of the inclined plate, and the guide rail is disposed on the outer end face of the wedge-shaped push block. The movable slide groove and the guide rail are slidably engaged.

[0011] Furthermore, the inclined angle of the wedge-shaped pusher is 5°-8°.

[0012] Furthermore, the push plate structure includes a push plate and two sliders. The two sliders are symmetrically arranged at the front and rear ends of the push plate. Each wedge-shaped push block has a corresponding stroke groove on its tail end face. The stroke groove slides with the slider. The middle part of the push plate is connected to the output end of the pushing mechanism.

[0013] Furthermore, the clamping assembly includes a clamping plate and an anti-slip plate. The clamping plate has a bent edge in the middle. The outer end of the clamping plate is connected to the anti-slip plate by a connecting bolt. The inner end of the clamping plate is connected to a wedge-shaped push block.

[0014] Furthermore, the clamping plate has two stiffening ribs at the bent edge.

[0015] Furthermore, the actuating mechanism is a cylinder.

[0016] Compared with the prior art, the clamping device for road material strength testing equipment described in this utility model has the following advantages:

[0017] 1. The wedge clamping mechanism achieves efficient transmission of clamping force through the sliding engagement of the inclined plate and the wedge push block. When the push plate structure moves the wedge push block, the inclined angle (5°-8°) ensures the gradual amplification of the clamping force and possesses self-locking characteristics—even if a certain reaction force is generated externally during the clamping process, it will not easily loosen. This self-locking characteristic improves the stability and safety of the equipment. The wedge clamping mechanism, through the inclined surface and guide structure, utilizes sliding friction and thrust to transmit clamping force, avoiding the complex mechanical structure problems that may occur in traditional mechanical clamping devices. Its compact structure occupies little space, while providing stable clamping force, making it suitable for the needs of high-precision testing equipment. The sliding engagement of the wedge push block and the inclined plate, when the thrust provided by the pushing mechanism (cylinder) acts on the tail of the wedge push block, decomposes the force into a clamping force perpendicular to the material surface. This force amplification effect reduces the power requirements of the pushing mechanism and improves clamping efficiency.

[0018] 2. The push plate structure achieves efficient force transmission by connecting the pushing mechanism (cylinder) and the wedge-shaped push block. The push plate design converts the linear thrust of the cylinder into the sliding motion of the wedge-shaped push block, thereby providing the required clamping force for the wedge clamping mechanism. Slider blocks at both ends of the push plate slide in conjunction with the stroke grooves of the wedge-shaped push block, ensuring uniform force distribution during the push plate's movement and avoiding jamming caused by unilateral force application. This smooth motion transmission ensures that the wedge-shaped push block's movement trajectory remains consistent, resulting in more precise clamping force application and improved overall equipment stability and reliability. The sliders at both ends of the push plate are symmetrically positioned at the front and rear ends, sliding in conjunction with the stroke grooves at the tail of the wedge-shaped push block, ensuring the symmetry of the push plate's force. This ensures that the wedge-shaped push block maintains a consistent direction during movement, avoiding clamping errors caused by uneven force. Attached Figure Description

[0019] The accompanying drawings, which form part of this utility model, are used to provide a further understanding of the utility model. The illustrative embodiments of the utility model and their descriptions are used to explain the utility model and do not constitute an undue limitation of the utility model. In the drawings:

[0020] Figure 1 This is a schematic diagram of a clamping device for a road material strength testing equipment according to an embodiment of the present invention;

[0021] Figure 2 This is a schematic diagram of the clamping assembly structure described in an embodiment of the present utility model;

[0022] Figure 3 This is a schematic diagram of the guide structure described in an embodiment of the present utility model;

[0023] Figure 4 This is a schematic diagram of the pusher plate structure described in an embodiment of the present utility model.

[0024] Explanation of reference numerals in the attached figures:

[0025] 101. Mounting plate; 201. Inclined plate; 301. Pushing mechanism; 401. Push plate structure; 402. Stroke groove; 500. Clamping assembly; 501. Clamping plate; 502. Anti-slip plate; 503. Connecting bolt; 504. Rib plate; 601. Wedge-shaped push block; 602. Guide rail; 701. Fixed base. Detailed Implementation

[0026] It should be noted that, unless otherwise specified, the embodiments and features described in these embodiments can be combined with each other.

[0027] In the description of this utility model, it should be understood that the terms "center," "longitudinal," "lateral," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," and "outer," etc., indicating orientation or positional relationships based on the orientation or positional relationships shown in the accompanying drawings, are only for the convenience of describing this utility model and simplifying the description, 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, and therefore should not be construed as a limitation of this utility model. Furthermore, the terms "first," "second," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of indicated technical features. Thus, features defined with "first," "second," etc., may explicitly or implicitly include one or more of that feature. In the description of this utility model, unless otherwise stated, "a plurality of" means two or more.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The present invention will now be described in detail with reference to the accompanying drawings and embodiments.

[0030] A clamping device for road material strength testing equipment, such as Figure 1 As shown, the device includes two clamping mechanisms symmetrically arranged on the left and right sides. Each clamping mechanism comprises a mounting plate 101, a fixed base 701, a push plate structure 401, a pushing mechanism 301, two wedge-shaped clamping mechanisms, and two clamping assemblies 500. The fixed base 701 is located on the upper surface of the mounting plate 101. The two wedge-shaped clamping mechanisms are symmetrically arranged at the front and rear ends of the fixed base 701. The fixed ends of the wedge-shaped clamping mechanisms are fixedly connected to the fixed base 701. The output end of the pushing mechanism 301 drives the moving ends of the wedge-shaped clamping mechanisms through the push plate structure 401. The pushing mechanism 301 is a cylinder. The cylinder's push rod passes through the middle of the fixed base 701 and connects to the push plate structure 401.

[0031] The moving end of the wedge clamping mechanism is detachably connected to the clamping assembly 500, which is used to clamp and position the road surface material to be tested. The wedge clamping mechanism includes an inclined plate 201, a guide structure, and a wedge pusher block 601. The inclined plate 201 is fixedly connected to the end of the fixed base 701. The wedge pusher block 601 slides with the inclined plate 201 through the guide structure. The tail of the wedge pusher block 601 slides with the push plate structure 401. The top of the wedge pusher block 601 is detachably connected to the clamping assembly 500. The inclined angle of the wedge pusher block 601 is 5°-8°. The wedge clamping mechanism achieves efficient transmission of clamping force through the sliding engagement of the inclined plate 201 and the wedge pusher block 601. When the push plate structure 401 pushes the wedge pusher block 601 to move, the inclined angle (5°-8°) design ensures the gradual amplification of the clamping force and has a self-locking characteristic—even if a certain reaction force is generated externally during the clamping process, it will not easily loosen. This self-locking characteristic enhances the stability and safety of the equipment. The wedge clamping mechanism, through its inclined plane and guide structure, utilizes sliding friction and thrust to transmit clamping force, avoiding the complex mechanical structure problems that may occur with traditional mechanical clamping devices. Its compact structure occupies little space, while providing stable clamping force, making it suitable for the needs of high-precision testing equipment. The sliding engagement between the wedge pusher 601 and the inclined plate 201 allows the inclined plane to decompose the force into a clamping force perpendicular to the material surface when the thrust provided by the pushing mechanism 301 (cylinder) acts on the tail of the wedge pusher 601. This force amplification effect reduces the power requirement of the pushing mechanism 301, improving clamping efficiency.

[0032] like Figure 3 As shown, the guide structure includes a movable slide and a guide rail 602. The movable slide is disposed on the inner end face of the inclined plate 201, and the guide rail 602 is disposed on the outer end face of the wedge-shaped push block 601. The movable slide and the guide rail 602 are in sliding engagement.

[0033] like Figure 4As shown, the push plate structure 401 includes a push plate and two sliders. The two sliders are symmetrically arranged at the front and rear ends of the push plate. Each wedge-shaped push block 601 has a corresponding stroke groove 402 on its tail end face. The stroke groove 402 slides with the slider. The middle part of the push plate is connected to the output end of the pushing mechanism 301. The push plate structure 401 achieves efficient transmission of thrust by connecting the pushing mechanism 301 (cylinder) and the wedge-shaped push block 601. The design of the push plate converts the linear thrust of the cylinder into the sliding motion of the wedge-shaped push block 601, thereby providing the required clamping force for the wedge clamping mechanism. Sliders are provided at both ends of the push plate, which slide with the stroke grooves 402 of the wedge-shaped push block 601, so that the force is evenly distributed during the movement of the push plate, avoiding jamming caused by unilateral force. The smooth motion transmission method ensures that the movement trajectory of the wedge-shaped push block 601 does not deviate, thereby making the clamping force more precise and improving the overall stability and reliability of the equipment. The sliders at both ends of the push plate are symmetrically arranged at the front and rear ends, and slide in cooperation with the tail stroke groove 402 of the wedge-shaped push block 601, ensuring the symmetry of the force applied by the push plate. In this way, the wedge-shaped push block 601 can always maintain a consistent direction during movement, avoiding clamping errors caused by uneven force.

[0034] like Figure 2 As shown, the clamping assembly 500 includes a clamping plate 501 and an anti-slip plate 502. The clamping plate 501 has a bent edge in the middle. The outer end of the clamping plate 501 is connected to the anti-slip plate 502 by a connecting bolt 503, and the inner end of the clamping plate 501 is connected to a wedge-shaped push block 601. Two stiffening plates 504 are provided at the bent edge of the clamping plate 501.

[0035] The above are merely preferred embodiments of the present utility model and are not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model shall be included within the protection scope of the present utility model.

Claims

1. A clamping device for a road surface material strength detection apparatus, characterized by: Includes two clamping mechanisms; The two clamping mechanisms are arranged symmetrically on the left and right sides; The clamping mechanism includes a mounting plate (101), a fixed base (701), a push plate structure (401), a pushing mechanism (301), two wedge clamping mechanisms, and two clamping assemblies (500). The fixed base (701) is disposed on the upper surface of the mounting plate (101). The two wedge clamping mechanisms are symmetrically disposed at the front and rear ends of the fixed base (701). The fixed ends of the wedge clamping mechanisms are fixedly connected to the fixed base (701). The output end of the pushing mechanism (301) drives the moving end of the wedge clamping mechanism through the push plate structure (401). The moving end of the wedge clamping mechanism is detachably connected to the clamping assembly (500). The clamping assembly (500) is used to clamp and position the road surface material to be tested.

2. A clamping device for a road material strength testing apparatus according to claim 1, characterized in that: The wedge clamping mechanism includes an inclined plate (201), a guide structure, and a wedge push block (601). The inclined plate (201) is fixedly connected to the end of the fixed base (701). The wedge push block (601) is slidably engaged with the inclined plate (201) through the guide structure. The tail of the wedge push block (601) is slidably engaged with the push plate structure (401). The top of the wedge push block (601) is detachably connected to the clamping assembly (500).

3. The clamping device for a road material strength testing equipment according to claim 2, characterized in that: The guide structure includes a movable slide and a guide rail (602). The movable slide is disposed on the inner end face of the inclined plate (201), and the guide rail (602) is disposed on the outer end face of the wedge-shaped push block (601). The movable slide and the guide rail (602) are slidably engaged.

4. A clamping device for a road material strength testing equipment according to claim 2, characterized in that: The inclined plane angle of the wedge-shaped pusher (601) is 5°-8°.

5. A clamping device for a road material strength testing equipment according to any one of claims 2-4, characterized in that: The push plate structure (401) includes a push plate and two sliders. The two sliders are symmetrically arranged at the front and rear ends of the push plate. Each wedge-shaped push block (601) has a stroke groove (402) corresponding to its tail end face. The stroke groove (402) slides with the slider. The middle part of the push plate is connected to the output end of the pushing mechanism (301).

6. A clamping device for a road material strength testing equipment according to claim 5, characterized in that: The clamping assembly (500) includes a clamping plate (501) and an anti-slip plate (502). The clamping plate (501) has a bent edge in the middle. The outer end of the clamping plate (501) is connected to the anti-slip plate (502) by a connecting bolt (503). The inner end of the clamping plate (501) is connected to a wedge-shaped push block (601).

7. A clamping device for a road material strength testing equipment according to claim 6, characterized in that: The clamping plate (501) is provided with two stiffening plates (504) at the bent edge.

8. A clamping device for a road material strength testing equipment according to claim 5, characterized in that: The actuation mechanism (301) is a cylinder.

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