Device for testing technical parameters of bridge expansion joint

By designing a testing device for bridge expansion joints, and utilizing a combination of fixed and sliding clamps with force loading components, the device enables the testing of bridge test blocks of different widths. This solves the problem of insufficient adaptability of traditional devices and improves the stability and applicability of the testing.

CN223581588UActive Publication Date: 2025-11-21HUNAN UNIVERSITY OF SCIENCE & TECHNOLOGY ENGINEERING INSPECTION CO LTD
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Patent Information

Application Number
CN202422798952.4
Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2024-11-18
Publication Date
2025-11-21
Estimated Expiration
2034-11-18

AI Technical Summary

Technical Problem

Existing bridge expansion joint testing equipment can only conduct experiments on test blocks of a specific width, and cannot meet the testing needs of different widths.

Method used

A device was designed that includes a workbench, a fixed clamp, a sliding clamp, and a force loading component. The test block is clamped by a combination of the fixed clamp and the sliding clamp, and the sliding clamp is moved by the force loading component, so as to carry out experiments on bridge test blocks with gaps of different widths.

Benefits of technology

This expands the applicability of the device, enabling it to be used for testing bridge expansion joints of varying widths. It ensures the stability and reliability of the testing process and is suitable for a variety of testing needs, including stress testing, appearance quality testing, assembly tolerance testing, waterproof performance testing, and coating thickness testing.

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Abstract

The utility model relates to a device for testing technical parameters of a bridge expansion joint. The device comprises a workbench, a fixed clamp, a sliding clamp and a force loading assembly. The fixing clamp comprises a fixing plate, first bottom plates and first clamping blocks, the fixing plate is fixedly installed on the workbench, the multiple first bottom plates are arranged on the fixing plate in an array mode, and the first clamping blocks are located above the first bottom plates. The sliding clamp comprises a sliding plate, second bottom plates and second clamping blocks, the sliding plate is slidably installed on the workbench, the multiple second bottom plates are arranged on the sliding plate in an array mode, and the second clamping blocks are located above the second bottom plates. The force loading assembly is installed on the workbench, and the force loading assembly can drive the sliding clamp to slide on the workbench. According to the utility model, the fixed clamp and the sliding clamp are respectively used for clamping the test block, and the force loading assembly is used for applying horizontal displacement or pressure to the sliding clamp, so that the bridge test blocks with gaps of different widths can be experimented, and the application range of the experiment device is widened.
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Description

TECHNICAL FIELD

[0001] The utility model relates to bridge detection field especially relates to a device for bridge expansion joint technical parameter test. BACKGROUND

[0002] The existing bridge expansion joint is mainly used for relieving stress concentration of bridge body under the conditions of temperature difference change, traffic load and concrete shrinkage. However, the traditional expansion joint is prone to aging, wear and tear and uneven displacement during long-term use. If not found and maintained in time, it will affect the use safety of the bridge, so the bridge expansion joint needs to be detected regularly during the use of the bridge. The existing test device can only test the test block of specific width. SUMMARY

[0003] (I) technical problem to be solved

[0004] The utility model provides a device for bridge expansion joint technical parameter test, aims at solving the problem that the test device can only test the test block of specific width when testing the bridge expansion joint in the prior art.

[0005] (II) technical scheme

[0006] In order to solve the above problem, the utility model provides a device for bridge expansion joint technical parameter test, which comprises a workbench, a fixed clamp, a sliding clamp and a force loading assembly.

[0007] The fixed clamp comprises a fixed plate, a first bottom plate and a first clamp block, the fixed plate is fixedly installed on the workbench, a plurality of first bottom plates are arranged on the fixed plate in array, the first clamp block is located above the first bottom plate, and the first clamp block can be close to or away from the first bottom plate for clamping or loosening one side of the test block.

[0008] The sliding clamp comprises a sliding plate, a second bottom plate and a second clamp block, the sliding plate is slidingly installed on the workbench, a plurality of second bottom plates are arranged on the sliding plate in array, the second clamp block is located above the second bottom plate, and the second clamp block can be close to or away from the second bottom plate for clamping or loosening the other side of the test block.

[0009] The force loading assembly is installed on the workbench, and the force loading assembly can drive the sliding clamp to slide on the workbench.

[0010] Preferably, a fixed screw rod is arranged on the first bottom plate in the vertical direction, a first through hole is arranged in the middle of the first clamping block, the first clamping block is sleeved on the fixed screw rod through the first through hole, and a first top rod is arranged on the first bottom plate, one end of the first top rod is in abutment with one side of the first clamping block.

[0011] Preferably, a sliding screw rod is arranged on the second bottom plate in the vertical direction, a second through hole is arranged in the middle of the second clamping block, the second clamping block is sleeved on the sliding screw rod through the second through hole, and a second top rod is arranged on the second bottom plate, one end of the second top rod is in abutment with one side of the second clamping block.

[0012] Preferably, a first internal threaded hole is arranged on the first bottom plate in the vertical direction, and an external thread is arranged on the first top rod and matched with the first internal threaded hole.

[0013] A second internal threaded hole is arranged on the second bottom plate in the vertical direction, and an external thread is arranged on the second top rod and matched with the second internal threaded hole.

[0014] Preferably, a first nut is further sleeved on the fixed screw rod, and the first clamping block is located between the first nut and the first bottom plate.

[0015] A second nut is further sleeved on the sliding screw rod, and the second clamping block is located between the second nut and the second bottom plate.

[0016] Preferably, the force loading assembly comprises a force loading screw rod and a force loading nut.

[0017] A stop block is protrusively arranged on the workbench, a third internal threaded hole is arranged through the stop block, one end of the force loading screw rod is connected with the sliding clamp, the other end of the force loading screw rod can pass through the third internal threaded hole, the force loading nut is sleeved on the force loading screw rod, and the stop block is located between the force loading nut and the sliding clamp.

[0018] (Three) beneficial effects

[0019] The utility model discloses a plurality of fixed clamps and a plurality of sliding clamps are fixedly arranged and slidably arranged on the workbench, then the fixed clamps and the sliding clamps are used to clamp the test block respectively, the sliding clamp is driven to move by the force loading assembly, and horizontal displacement or pressure is applied to the sliding clamp. ACCURACY

[0020] Figure 1 is a structural schematic view of the present application;

[0021] Figure 2 is a side view of the present application;

[0022] Figure 3 is Figure 2 is an enlarged view at A.

[0023]

BRIEF DESCRIPTION OF DRAWINGS

[0024] 10: workbench; 101: stop block;

[0025] 11: fixed clamp; 111: fixed plate; 112: first bottom plate; 113: first clamping block; 114: fixed screw rod; 115: first top rod; 116: first nut;

[0026] 12: sliding clamp; 121: sliding plate; 122: second clamping block; 124: sliding screw rod; 125: second top rod; 126: second nut;

[0027] 13: force loading assembly; 131: force loading screw rod; 132: force loading nut;

[0028] 20: test block. DETAILED DESCRIPTION

[0029] In order to better explain the utility model, so as to facilitate understanding, the following will be combined with the drawings, through specific embodiments, the utility model is described in detail.

[0030] It should be noted that all directionality indications (such as up, down, left, right, front, back, etc.) in the embodiments of the present application are only used to explain the relative positional relationship, movement condition, etc. between components in a certain specific posture (as shown in the drawings), and if the specific posture changes, the directionality indications will also change accordingly.

[0031] In addition, in the present application, the description such as "first", "second" and the like is only for the purpose of description, and cannot be understood as indicating or implying the relative importance of the indicated technical features or implicitly indicating the number of the indicated technical features. Therefore, the features limited by "first", "second" can explicitly or implicitly include at least one of the features. In the description of the present application, the meaning of "a plurality of" is at least two, for example, two, three, etc., unless otherwise specifically limited.

[0032] In the utility model, unless another definite provision and limitation, the terms "connect", "fix" and the like should do the broad sense understanding, for example, "fix" can be fixed connection, also can be detachable connection, or be integrated;Can be mechanical connection, also can be electrical connection;Can be directly connected, also can be indirectly connected through the intermediate medium, can be the communication or the interaction relation of two elements inside two elements, unless another definite limitation.For the ordinary skilled person in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0033] The utility model provides a device for bridge expansion joint technical parameter test, the device for bridge expansion joint technical parameter test includes: workstation 10, fixed clamp 11, sliding clamp 12 and force loading assembly 13. Fixed clamp 11 includes fixed plate 111, first bottom plate 112 and first clamping block 113, and fixed plate 111 is fixedly installed on workstation 10, and a plurality of first bottom plates 112 are arranged on fixed plate 111, and first clamping block 113 is located above first bottom plate 112, and first clamping block 113 can be close to or away from first bottom plate 112 to be used for clamping or loosening one side of test block 20. Sliding clamp 12 includes sliding plate 121, second bottom plate and second clamping block 122, and sliding plate 121 is slidably installed on workstation 10, and sliding plate 121 can be away from or close to fixed plate 111, and a plurality of second bottom plates are arranged on sliding plate 121, and second clamping block 122 is located above second bottom plate, and second clamping block 122 can be close to or away from second bottom plate to be used for clamping or loosening the other side of test block 20. Force loading assembly 13 is installed on workstation 10, and force loading assembly 13 can drive sliding clamp 12 to slide on workstation 10. Specifically, force loading assembly 13 can drive sliding plate 121 to move.

[0034] The utility model discloses a plurality of fixed clamps 11 and sliding clamps 12 are fixedly arranged on the workbench 10, and then the test block 20 is clamped by the fixed clamps 11 and sliding clamps 12 respectively, and the sliding clamp 12 is moved by the force loading assembly 13, and horizontal displacement or pressure is applied to the sliding clamp 12, which can simulate the dynamic stress state of the bridge under different working conditions, guarantee the stability and reliability of the test process. The function of the detection device is not only limited to stress test, but also can be used for detection of various technical parameters. The device can be used for detecting the appearance quality, assembly tolerance, waterproof performance, coating adhesion, coating thickness and maximum horizontal displacement of the sample. The device solves the problem of insufficient adaptability of traditional equipment in dealing with different specifications of bridge expansion joint detection. The device is compact in structure and easy to operate, and is suitable for various detection requirements. It provides an efficient and reliable solution for bridge maintenance and quality detection. In the actual experiment process, there is a gap in the bridge test block 20, and the gap is filled with elastic filler, such as rubber. The bridge test block 20 is located between the fixed clamp 11 and the sliding clamp 12, and one side of the bridge test block 20 is clamped by the first clamp block 113 and the first bottom plate 112, and the other side of the bridge test block 20 is clamped by the second clamp block 122 and the second bottom plate. Since the second bottom plate and the second clamp block 122 can move away from or approach the fixed plate 111 by following the movement of the sliding plate 121, the distance between the fixed clamp 11 and the sliding clamp 12 is variable. Therefore, the device for testing the technical parameters of the bridge expansion joint in the application can be used to experiment on bridge test blocks 20 with different width gaps, thereby improving the application range of the experimental device.

[0035] Further, the first bottom plate 112 is provided with a fixed screw rod 114 in the vertical direction, the middle part of the first clamp block 113 is provided with a first through hole, the first clamp block 113 is sleeved on the fixed screw rod 114 through the first through hole, the first bottom plate 112 is provided with a first top rod 115, and one end of the first top rod 115 abuts against one side of the first clamp block 113. The second bottom plate is provided with a sliding screw rod 124 in the vertical direction, the middle part of the second clamp block 122 is provided with a second through hole, the second clamp block 122 is sleeved on the sliding screw rod 124 through the second through hole, and the second bottom plate is provided with a second top rod 125, and one end of the second top rod 125 abuts against one side of the second clamp block 122.

[0036] The corresponding nuts are sleeved on the fixed screw rod 114 and the sliding screw rod 124, so that the first clamp block 113 and the second clamp block 122 can be clamped by rotating the nuts. The structure is simple and reliable.

[0037] Further, the first bottom plate 112 is provided with a first inner threaded hole in the vertical direction, and the first top rod 115 is provided with an outer thread matched with the first inner threaded hole. The second bottom plate is provided with a second inner threaded hole in the vertical direction, and the second top rod 125 is provided with an outer thread matched with the second inner threaded hole. By rotating the first top rod 115 and the second top rod 125, the height of the first top rod 115 and the top rod extending out of the corresponding first bottom plate 112 and the second bottom plate can be adjusted, so that the bridge test block 20 with different thicknesses can be clamped.

[0038] In the preferred embodiment, the fixed lead screw 114 is further sleeved with a first nut 116, and the first clamping block 113 is located between the first nut 116 and the first bottom plate 112. The sliding lead screw 124 is further sleeved with a second nut 126, and the second clamping block 122 is located between the second nut 126 and the second bottom plate.

[0039] Finally, the force loading assembly 13 comprises a force loading lead screw 131 and a force loading nut 132. The workbench 10 is provided with a stop block 101 protruding therefrom, the stop block 101 is provided with a third inner threaded hole penetrating therethrough, one end of the force loading lead screw 131 is connected with the sliding clamp 12, the other end of the force loading lead screw 131 can pass through the third inner threaded hole, and the force loading nut 132 is sleeved on the force loading lead screw 131, and the stop block 101 is located between the force loading nut 132 and the sliding clamp 12. A strain sensor can also be provided on the force loading lead screw 131 for measuring the stress applied to the sliding clamp 12 by the force loading lead screw 131.

[0040] It should be understood that the above description of the specific embodiments of the present application is only for the purpose of illustrating the technical route and characteristics of the present application, and the purpose is to enable those skilled in the art to understand the content of the present application and implement it, but the present application is not limited to the above specific implementation. Any changes or modifications made within the scope of the claims of the present application should be covered within the protection scope of the present application.

Claims

1. A device for testing technical parameters of bridge expansion joints, characterized in that, The device for bridge expansion joint technical parameter test comprises a workbench (10), a fixed clamp (11), a sliding clamp (12) and a force loading assembly (13); The fixed clamp (11) comprises a fixed plate (111), a first bottom plate (112) and a first clamp block (113), the fixed plate (111) is fixedly installed on the workbench (10), a plurality of first bottom plates (112) are arrayed on the fixed plate (111), the first clamp block (113) is located above the first bottom plate (112), and the first clamp block (113) can be close to or away from the first bottom plate (112) for clamping or loosening one side of a test block (20); The sliding clamp (12) comprises a sliding plate (121), a second bottom plate and a second clamp block (122), the sliding plate (121) is slidably installed on the workbench (10), a plurality of second bottom plates are arrayed on the sliding plate (121), the second clamp block (122) is located above the second bottom plate, and the second clamp block (122) can be close to or away from the second bottom plate for clamping or loosening the other side of the test block (20); The force loading assembly (13) is installed on the workbench (10), and the force loading assembly (13) can drive the sliding clamp (12) to slide on the workbench (10).

2. The device for testing technical parameters of bridge expansion joints according to claim 1, characterized in that, A fixed screw rod (114) is arranged on the first bottom plate (112) in the vertical direction, a first through hole is arranged in the middle of the first clamp block (113), the first clamp block (113) is sleeved on the fixed screw rod (114) through the first through hole, a first top rod (115) is arranged on the first bottom plate (112), and one end of the first top rod (115) abuts against one side of the first clamp block (113).

3. The device for testing technical parameters of bridge expansion joints according to claim 2, characterized in that, A sliding screw rod (124) is arranged on the second bottom plate in the vertical direction, a second through hole is arranged in the middle of the second clamp block (122), the second clamp block (122) is sleeved on the sliding screw rod (124) through the second through hole, and a second top rod (125) is arranged on the second bottom plate, and one end of the second top rod (125) abuts against one side of the second clamp block (122).

4. The device for bridge expansion joint technical parameter test according to claim 3, characterized in that: A first internal threaded hole is arranged on the first bottom plate (112) in the vertical direction, and an external thread is arranged on the first top rod (115) and matched with the first internal threaded hole; A second internal threaded hole is arranged on the second bottom plate in the vertical direction, and an external thread is arranged on the second top rod (125) and matched with the second internal threaded hole.

5. The device for testing technical parameters of bridge expansion joints according to claim 4, characterized in that, A first nut (116) is further sleeved on the fixed screw rod (114), and the first clamp block (113) is located between the first nut (116) and the first bottom plate (112); A second nut (126) is further sleeved on the sliding screw rod (124), and the second clamp block (122) is located between the second nut (126) and the second bottom plate.

6. The device for testing technical parameters of bridge expansion joints according to any of claims 1-5, characterized in that, The force loading assembly (13) comprises a force loading screw rod (131) and a force loading nut (132); The workbench (10) is provided with a stopper (101) protruding therefrom, the stopper (101) is provided with a third internally threaded hole therethrough, one end of the force loading screw rod (131) is connected with the sliding clamp (12), the other end of the force loading screw rod (131) can pass through the third internally threaded hole, and the force loading nut (132) is sleeved on the force loading screw rod (131), and the stopper (101) is located between the force loading nut (132) and the sliding clamp (12).