Highway bridge expansion device testing device

Abstract

The invention discloses a highway bridge expansion device testing device which comprises a supporting seat frame, a transverse displacement supporting beam and a longitudinal tension and compression supporting beam are installed on the supporting seat frame, and a vertical beam and a span beam are arranged in the middle of the supporting seat frame. A transverse servo oil cylinder, a longitudinal servo oil cylinder, a vertical servo oil cylinder, a horizontal impact oil cylinder and a vertical loading oil cylinder are correspondingly and additionally arranged; by arranging a transverse servo oil cylinder, transverse dislocation movement of the transverse displacement supporting beam can be achieved; by arranging the longitudinal servo oil cylinder, longitudinal dislocation can be realized, and longitudinal pulling and pressing test force can be applied; a vertical servo oil cylinder is arranged, so that a vertical dislocation movement test is realized; the horizontal impact oil cylinder is arranged to realize the horizontal impact load on the sample, and the vertical loading oil cylinder is arranged to realize the vertical test loading on the sample; the testing device is suitable for testing samples of various specifications, and is reasonable in structural design, simple to operate and use and accurate in testing.

Description

Technical Field

[0001] The invention relates to the technical field of bridge construction, and in particular to a testing device for a highway bridge expansion device. Background Art

[0002] my country's highway construction, especially expressway construction, has advanced by leaps and bounds, among which bridges account for a very large proportion. As a result, the installation and use of bridge expansion joint devices have become more extensive and the quality requirements have become higher.

[0003] At present, most of the test devices for bridge expansion joints are relatively simple and can only test a single performance of the bridge expansion joints. It is impossible to complete all the test items required by the standard on one device. How to effectively complete the various performance tests of bridge expansion joints on one device, such as vertical misalignment test, longitudinal tension and compression test, vertical loading test and other related projects, is the current development direction of bridge expansion joint test devices. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and propose a highway bridge expansion device test device, comprising a support frame, on which a plurality of support beams are fixedly mounted; A lateral displacement support beam and a longitudinal tension and compression support beam are slidably mounted on the support frame; The supporting crossbeam is provided with a sliding base arranged transversely, and two transverse servo oil cylinders are fixedly installed in the sliding base, and a mounting block is fixedly installed on the output shaft of each transverse servo oil cylinder; and the same transverse displacement supporting beam is fixedly installed on the two mounting blocks; A longitudinal tension and compression support beam is also provided on the support crossbeam, and a sliding assembly is also provided between the longitudinal tension and compression support beam and the support crossbeam; the longitudinal tension and compression support beam is away from the side of the lateral displacement support beam and the longitudinal servo cylinder provided on the support crossbeam; A vertical beam is fixedly installed in the middle of the support frame, a horizontal impact cylinder is arranged inside the vertical beam, and an abutment block is arranged at the end of the telescopic rod of the horizontal impact cylinder for abutting against the bridge telescopic device; A span beam is fixedly installed on the top of the vertical beam, and a vertical loading cylinder is arranged on the upper part of the span beam; an abutment block is arranged at the end of the telescopic rod of the vertical loading cylinder for facilitating abutment with the bridge telescopic device.

[0005] Preferably, the sliding base is located on a side close to the supporting frame.

[0006] Preferably, a limit lever is provided at the bottom of the mounting block, and the travel range of the limit lever is limited by a limit hole provided on the sliding base.

[0007] Preferably, the sliding assembly includes a U-shaped mounting base, a rotating disc is arranged at the top of the U-shaped mounting base, a rotating shaft is installed at the center of the rotating disc, and the rotating shaft is movably installed in the mounting through hole arranged at the bottom of the longitudinal tension-compression support beam.

[0008] Preferably, mounting bearing seats are fixedly penetrated through both sides of the U-shaped mounting base, and pulleys are installed on the mounting bearing seats.

[0009] Preferably, the total number of the mounting bearing seats is 4.

[0010] Preferably, limiting rods for preventing the U-shaped mounting base from sliding out of the cross beam are also fixedly installed on both sides of the U-shaped mounting base.

[0011] Preferably, a plurality of support legs are fixedly installed at the bottom of the support seat frame and the bottom of the cross beam, and anti-slip feet are fixedly installed at the bottom of the support legs.

[0012] Compared with the prior art, the beneficial effects of the present invention are as follows: the welded frame combination structure of the present invention is compact and reasonable; the present invention is uniformly hydraulically driven and loaded, and the measurement and control are convenient and accurate; the key oil cylinders of the present invention adopt servo oil cylinders, and the measurement and control are accurate and reliable; the two support beams of the present invention respectively realize longitudinal, transverse or vertical displacements without interfering with each other. Various specifications of specimens suitable for this test device can be conveniently fixed on the support beam with bolts to conduct various tests specified by the standards on the specimens. The device has a reasonable structural design, is simple to operate and use, and the test is accurate and reliable.

[0013] By arranging the transverse servo oil cylinder, the transverse misaligned movement of the transverse displacement support beam can be realized; by arranging the longitudinal servo oil cylinder, both longitudinal misalignment and longitudinal tensile and compressive test forces can be applied; by arranging the vertical servo oil cylinder, the vertical misaligned movement test can be realized; by arranging the horizontal impact oil cylinder, the horizontal impact load on the specimen can be realized, and by arranging the vertical loading oil cylinder, the vertical test loading on the specimen can be realized. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 is a schematic diagram of the overall structure of a test device for a highway bridge expansion device proposed by the present invention; Figure 2 is a schematic diagram of the overall structure of a test device for a highway bridge expansion device proposed by the present invention (the transverse displacement support beam and the longitudinal tension-compression support beam are not assembled).

[0015] In the figure, support seat frame 1, support leg 11, anti-slip foot 12; support cross beam 2; sliding base 3, transverse servo oil cylinder 31, mounting block 32, transverse displacement support beam 33; Longitudinal tension and compression support beam 4, sliding assembly 41, longitudinal servo cylinder 42, U-shaped mounting seat 410, rotating disc 412, rotating shaft 413, mounting bearing seat 414, pulley 415, limiting rod 416; Vertical beam 5, horizontal impact cylinder 51, horizontal abutting block 52, Cross beam 6, vertical loading cylinder 61, vertical abutting block 62; Specific implementation method

[0016] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments.

[0017] Referring to the drawings, this embodiment provides a test device for a highway bridge expansion device, including a support frame 1, and a plurality of support cross beams 2 are fixedly installed on the support frame 1; A horizontally arranged sliding base 3 is provided on the support cross beam 2. Two horizontal servo cylinders 31 are fixedly installed in the sliding base 3. An installation block 32 is fixedly provided on the output shaft of each horizontal servo cylinder 31; The same horizontal displacement support beam 33 is fixedly installed on the two installation blocks 32; A longitudinal tension and compression support beam 4 is further provided on the support cross beam 2. A sliding assembly 41 is further provided between the longitudinal tension and compression support beam 4 and the support cross beam 2. The longitudinal tension and compression support beam 4 and the support cross beam 2 are slidably connected through the sliding assembly; The side of the longitudinal tension and compression support beam 4 away from the horizontal displacement support beam 33 is connected to a longitudinal servo cylinder 42 provided on the support cross beam 2; A vertical beam 5 is fixedly installed in the middle of the support frame 1. A horizontal impact cylinder 51 is arranged inside the vertical beam 5. The end of the telescopic rod of the horizontal impact cylinder 51 is provided with a horizontal abutting block 52 that is convenient for abutting against the bridge expansion device; A cross beam 6 is fixedly installed on the top of the vertical beam 5, and a vertical loading cylinder 61 is arranged on the upper part of the cross beam 6; The end of the telescopic rod of the vertical loading cylinder is provided with a vertical abutting block 62 that is convenient for abutting against the bridge expansion device.

[0018] Furthermore, the sliding base 3 is located on the side close to the support frame 1.

[0019] Furthermore, a limiting rod 34 is provided at the bottom of the installation block 32, and the stroke range of the limiting rod 34 is limited by a limiting hole 35 provided on the sliding base 3.

[0020] Furthermore, the sliding component 41 includes a U-shaped mounting base 410. A rotating disc 412 is provided at the top of the U-shaped mounting base 410. A rotating shaft 413 is installed at the center of the rotating disc 412, and the rotating shaft 413 is movably installed in the mounting through hole provided at the bottom of the longitudinal tension and compression support beam 4.

[0021] Furthermore, mounting bearing seats 414 are fixedly penetrated through both sides of the U-shaped mounting base 410, and pulleys 415 are installed on the mounting bearing seats 414.

[0022] Furthermore, the total number of the mounting bearing seats 414 is 4.

[0023] Furthermore, limiting rods 416 for preventing the U-shaped mounting base 410 from sliding out of the support cross beam 2 are fixedly installed on both sides of the U-shaped mounting base 410.

[0024] Furthermore, a plurality of support legs 11 are fixedly installed at the bottom of the support seat frame 1 and the bottom of the support cross beam 2, and anti-slip feet 12 are fixedly installed at the bottom of the support legs 11.

[0025] Working principle First, fix the bridge expansion joint device to be tested on the transverse displacement support beam 33 and the longitudinal tension and compression support beam 4 through bolts. When testing the transverse misalignment ability of the expansion joint device, start the transverse servo oil cylinder to realize the transverse misalignment movement of the transverse displacement support beam 2. When testing the longitudinal misalignment ability of the expansion joint device, start the two longitudinal servo oil cylinders to realize longitudinal misalignment and apply longitudinal tensile and compressive test forces. When testing the vertical misalignment ability of the expansion joint device, start the vertical servo oil cylinder to realize the vertical misalignment movement test. When testing the horizontal impact ability of the expansion joint device, start the horizontal impact oil cylinder to apply a horizontal impact load to the specimen.

[0026] When testing the vertical bearing capacity of the expansion joint device, start the vertical loading oil cylinder to apply a vertical test load to the specimen.

[0027] In the above embodiments and working principles, The welded frame combination structure of the present invention is compact and reasonable; the present invention is uniformly hydraulically driven and loaded, with convenient and accurate measurement and control; the key oil cylinders of the present invention adopt servo oil cylinders, with accurate, reliable measurement and control; the two support beams of the present invention respectively realize longitudinal, transverse or vertical displacement without interference. Various specifications of specimens suitable for this test device can be conveniently fixed on the support beam with bolts to conduct various tests specified by the standard on the specimens. The device has a reasonable structural design, is simple to operate and use, and the test is accurate and reliable.

[0028] The above specific embodiments further illustrate the purpose, technical solutions and beneficial effects of the present invention. It should be understood that the above are only specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes according to the technical solutions and inventive concepts of the present invention within the technical scope disclosed by the present invention, which should be covered by the protection scope of the present invention.

[0029] In addition, in the description of the present invention, it should be understood that the terms indicating orientation or positional relationships are based on the orientation or positional relationships shown in the drawings and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be understood as a limitation on the present invention.

[0030] Furthermore, in the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A highway bridge expansion device test device, comprising a support frame, characterized in that: A plurality of support cross beams are fixedly installed on the support seat frame; A lateral displacement support beam and a longitudinal tension-compression support beam are slidably installed on the support seat frame; A sliding base arranged transversely is provided on the support cross beam. Two lateral servo cylinders are fixedly installed in the sliding base. An installation block is fixedly arranged on the output shaft of each lateral servo cylinder; The same lateral displacement support beam is fixedly installed on the two installation blocks; A longitudinal tension-compression support beam is further provided on the support cross beam, and a sliding component is further provided between the longitudinal tension-compression support beam and the support cross beam; One side of the longitudinal tension-compression support beam away from the lateral displacement support beam is provided with a longitudinal servo cylinder arranged on the support cross beam; A vertical beam is fixedly installed in the middle of the support seat frame. A horizontal impact oil cylinder is arranged inside the vertical beam. A contact block for facilitating contact with the bridge expansion device is arranged at the end of the telescopic rod of the horizontal impact oil cylinder; A cross beam is fixedly installed at the top of the vertical beam, and a vertical loading oil cylinder is arranged on the upper part of the cross beam; A contact block for facilitating contact with the bridge expansion device is arranged at the end of the telescopic rod of the vertical loading oil cylinder.

2. A highway bridge expansion device test device according to claim 1, characterized in that: The sliding base is located on one side close to the support seat frame.

3. A highway bridge expansion device test device according to claim 1, characterized in that: A limiting stop rod is arranged at the bottom of the installation block, and the stroke range of the limiting stop rod is limited by a limiting hole arranged on the sliding base.

4. A highway bridge expansion device test device according to claim 1, characterized in that: The sliding component includes a U-shaped installation seat. A rotating disc is arranged at the top of the U-shaped installation seat. A rotating shaft is installed at the center of the rotating disc, and the rotating shaft is movably installed with an installation through hole arranged at the bottom of the longitudinal tension-compression support beam.

5. A highway bridge expansion device test device according to claim 4, characterized in that: Installation bearing seats are fixedly penetrated through both sides of the U-shaped installation seat, and pulleys are installed on the installation bearing seats.

6. A highway bridge expansion device test device according to claim 5, characterized in that: The total number of the installation bearing seats is 4.

7. A highway bridge expansion device test device according to claim 4, characterized in that: Limiting rods for preventing the U-shaped installation seat from sliding out of the cross beam are further fixedly installed on both sides of the U-shaped installation seat.

8. A highway bridge expansion device test device according to claim 1, characterized in that: A plurality of support legs are fixedly installed at the bottom of the support seat frame and the bottom of the cross beam, and anti-slip feet are fixedly installed at the bottom of the support legs.

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