A slidable hinge support suitable for compression tests of specimens of different sizes

Abstract

The slidable hinge support suitable for compression testing of specimens of different sizes of the present invention belongs to the field of structural engineering, and includes a bottom plate, a side plate, a slot plate, a first clamp and a second clamp. The bottom plate is detachably connected to the loading frame. There are two side plates, which are symmetrically connected to the top surface of the bottom plate and perpendicular to the bottom plate. The slot plate is connected between the ends of the side plates to form a rectangular frame, and slots are provided on both slot plates, and the slot positions of the two slot plates correspond. The first clamp is inserted into the slots of the two slot plates close to the two sides of the specimen to be inserted, and can move along the width direction of the slot. The second clamp is inserted into the slots of the two slot plates close to the outside of the first clamp, and can move along the width direction of the slot, thereby fixing the specimen to be inserted in the area surrounded by the slot plate and the first clamp. The hinge support can be suitable for specimens of different sizes, and can also slide up and down along the specimen in the vertical direction.

Description

Technical Field

[0001] The invention relates to the field of structural engineering, and in particular to a slidable hinge support suitable for compression tests of test pieces of different sizes. Background Art

[0002] In the field of structural engineering, mechanical testing of structural components and structural nodes is an indispensable task in scientific research and product testing. Mechanical tests are generally carried out on test loading frames. During mechanical tests, the test boundary is an important factor affecting the correctness of the test results. At present, the boundary conditions in the test are generally achieved using different tooling. On the one hand, it is necessary to make supports of different sizes, which increases the test cost. On the other hand, it is also necessary to repeatedly disassemble and assemble the supports, which is a complicated process.

[0003] In addition, traditional hinge supports generally use ball hinges to simulate component hinges, but this type of hinge support cannot slide and cannot simulate the actual deformation and force characteristics of the frame structure node well. Summary of the invention

[0004] The purpose of the present invention is to provide a slidable hinge support suitable for compression tests of specimens of different sizes, so as to solve the technical problems that the current use of different tooling to adjust the test boundaries requires the production of supports of different sizes, which increases the test cost, requires repeated disassembly and assembly of supports, and has complicated procedures; the traditional hinge support cannot slide, resulting in the inability to simulate the actual deformation and stress characteristics of the frame structure node well.

[0005] In order to solve the above technical problems, the present invention provides a slidable hinge support suitable for compression tests of specimens of different sizes, comprising:

[0006] A bottom plate, detachably connected to the loading frame;

[0007] There are two side panels, which are symmetrically connected to the top surface of the bottom panel and are perpendicular to the bottom panel;

[0008] The card slot plates are connected between the ends of the side plates to form a rectangular frame. The two card slot plates are both provided with card slots, and the card slot positions of the two card slot plates correspond to each other.

[0009] The first clamping member is inserted into the clamping slots of the two clamping slot plates closely against the two sides of the test piece to be inserted, and can move horizontally along the clamping slots;

[0010] The second clamping member is inserted into the clamping slots of the two clamping slot plates close to the outer side of the first clamping member and can move horizontally along the clamping slots to fix the test piece to be inserted in the area surrounded by the clamping slot plates and the first clamping member.

[0011] Preferably, a hole is also formed at the bottom of the slot plate.

[0012] Preferably, the card slot comprises a horizontal card slot and a vertical card slot, and the vertical card slots are arranged at intervals along the horizontal card slot.

[0013] Preferably, the first clamping member is a steel rod, and the second clamping member is a steel plate.

[0014] Preferably, the height of the horizontal card slot is adapted to the diameter of the first card member, the height of the vertical card slot is adapted to the width of the second card member, and the width of the vertical card slot is adapted to the thickness of the second card member.

[0015] Preferably, a transverse baffle is further provided in the card slot on the outer side of the second card.

[0016] Preferably, a fine-tuning plate is inserted into the card slot between the first card member and the second card member.

[0017] Preferably, both ends of the first clamping member extend beyond the clamping slot, and the ends extending beyond the clamping slot are connected to limiting bolts.

[0018] Preferably, ribs are provided between the side plates and the bottom plate.

[0019] Preferably, threaded holes are formed at four corners of the bottom plate, and the bottom plate is bolted to the loading frame via the threaded holes.

[0020] Compared with the prior art, the characteristics and beneficial effects of the present invention are:

[0021] (1) The hinge support of the present invention fixes the test piece in a rectangular frame formed by the side plate and the slot plate by opening a slot on the slot plate and inserting a first clamp and a second clamp into the slot. By sliding the first clamp and the second clamp, the hinge support can be applied to test pieces of different sizes, thereby increasing the application range of the hinge support and reducing the cost of mechanical testing.

[0022] (2) The hinge support of the present invention does not constrain the specimen in the vertical direction, and the hinge support can slide up and down along the specimen in the vertical direction. And if the specimen is a columnar structure, the hinge support can rotate around the specimen, which can better simulate the deformation and force characteristics of the frame structure node.

[0023] (3) The hinge support of the present invention has a simple structure, clear boundary conditions and force transmission, is easy to disassemble and assemble, and can meet the requirements of sliding hinge supports for most beam and column component tests. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] Figure 1 Schematic diagram of mechanical test on hinged support (limit bolts omitted).

[0025] Figure 2 It is a structural schematic diagram of the hinge support.

[0026] Figure 3It is a structural schematic diagram of the card slot board.

[0027] The accompanying drawings are marked with: 1-bottom plate, 2-side plate, 3-slot plate, 4-first clamp, 5-second clamp, 6-slot, 61-horizontal slot, 62-vertical slot, 7-test piece, 8-limiting bolt, 9-rib plate, 10-transverse baffle, 11-opening, 12-fine-tuning plate. DETAILED DESCRIPTION

[0028] In order to make the technical means, innovative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below.

[0029] The embodiments described herein are specific embodiments of the present invention, which are used to illustrate the concept of the present invention, are illustrative and exemplary, and should not be construed as limiting the embodiments of the present invention and the scope of the present invention. In addition to the embodiments described herein, those skilled in the art can also adopt other obvious technical solutions based on the claims and the contents disclosed in the specification of this application, including technical solutions that adopt any obvious replacement and modification of the embodiments described herein.

[0030] In the description of the present invention, it should be noted that the terms "upper", "lower", "inner", "outer", "front end", "rear end", "two ends", "one end", "the other end" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the drawings, and are only for the convenience of describing the present invention and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first" and "second" are used for descriptive purposes only and cannot be understood as indicating or implying relative importance.

[0031] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "connected", etc. should be understood in a broad sense. For example, "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0032] like Figures 1 to 3 As shown, a slidable hinge support suitable for compression tests of specimens of different sizes includes a bottom plate 1, a side plate 2, a slot plate 3, a first clamping member 4 and a second clamping member 5.

[0033] The bottom plate 1 is detachably connected to the loading frame. The four corners of the bottom plate 1 are provided with threaded holes, and the bottom plate 1 is bolted to the loading frame through the threaded holes. There are two side plates 2, which are symmetrically connected to the top surface of the bottom plate 1 and are perpendicular to the bottom plate 1. A rib plate 9 is provided between the side plate 2 and the bottom plate 1.

[0034] The slot plates 3 are connected between the ends of the side plates 2 to form a rectangular frame. The two slot plates 3 are provided with slots 6, and the positions of the slots 6 of the two slot plates 3 correspond to each other. The bottom of the slot plates 3 is also provided with a hole 11 for observing the position of the bottom of the test piece 7. During the mechanical test, it is ensured that there is a moving space at the lower end of the test piece 7 to form the boundary of the sliding hinge support, which is used to simulate the position of the inflection point of the beam or column.

[0035] The first clamp 4 is inserted into the slots 6 of the two slot plates 3, close to both sides of the test piece 7 to be inserted, and can move horizontally along the slots 6. The second clamp 5 is inserted into the slots 6 of the two slot plates 3, close to the outer side of the first clamp 4, and can move horizontally along the slots 6. The test piece 7 is fixed in the area surrounded by the slot plates 3 and the first clamp 4 by the first clamp 4 and the second clamp 5, and the test piece 7 will not be offset during the mechanical test, ensuring the accuracy of the test results. And because the first clamp 4 and the second clamp 5 can move along the slot 6, the cross-sectional size of the area surrounded by the slot plates 3 and the first clamp 4 will change accordingly, so it can be applied to test pieces 7 of different sizes. In addition, the first clamp 4, the second clamp 5 and the slot plate 3 will not constrain the test piece 7 in the vertical direction, and the hinge support can slide up and down along the test piece 7.

[0036] The slot 6 includes a horizontal slot 61 and a vertical slot 62, and the vertical slot 62 is spaced apart along the horizontal slot 61. The first clamp 4 is a steel bar, and the second clamp 5 is a steel plate. Both ends of the first clamp 4 extend beyond the slot 6, and the ends extending beyond the slot 6 are connected to the limit bolts 8. The height of the horizontal slot 61 is adapted to the diameter of the first clamp 4, the height of the vertical slot 62 is adapted to the width of the second clamp 5, and the width of the vertical slot 62 is adapted to the thickness of the second clamp 5.

[0037] A transverse baffle 10 is also provided in the slot 6 outside the second clamp 5 to enhance the strength of the hinge support. A fine-tuning plate 12 is also inserted in the slot 6 between the first clamp 4 and the second clamp 5 to facilitate fine-tuning of the spacing between the two first clamps 4 according to the size of the test piece 7. When the size of the test piece 7 is close to the size of the rectangular frame formed between the slot plate 3 and the side plate 2, a stainless steel plate can be filled between the test piece 7 and the side plate 2, and butter can be applied between the stainless steel plate and the test piece 7. It is also possible to directly remove the first clamp 4 and the second clamp 5, insert a transverse steel plate, and make an arc treatment on the side of the transverse steel plate that contacts the test piece 7.

[0038] The above embodiments are merely descriptions of preferred implementation modes of the present invention, and are not intended to limit the scope of the present invention. Without departing from the design spirit of the present invention, various modifications and improvements made to the technical solutions of the present invention by ordinary technicians in this field should all fall within the protection scope determined by the claims of the present invention.

Claims

1. A slidable hinge support suitable for compression tests of specimens of different sizes, characterized in that include: A bottom plate (1) detachably connected to the loading frame; Side panels (2), of which there are two, the side panels (2) are symmetrically connected to the top surface of the bottom panel (1) and are perpendicular to the bottom panel (1); The card slot plates (3) are connected between the ends of the side plates (2) to form a rectangular frame, and the two card slot plates (3) are both provided with card slots (6), and the positions of the card slots (6) of the two card slot plates (3) correspond to each other; The first clamping member (4) is inserted into the clamping slots (6) of the two clamping slot plates (3) in close contact with the two sides of the test piece (7) to be inserted, and can move horizontally along the clamping slots (6); The second clamping member (5) is inserted into the clamping slots (6) of the two clamping slot plates (3) in close contact with the outer side of the first clamping member (4), and can be moved horizontally along the clamping slots (6) to fix the test piece (7) to be inserted in the area surrounded by the clamping slot plates (3) and the first clamping member (4); The clamping slot (6) comprises a horizontal clamping slot (61) and a vertical clamping slot (62), wherein the vertical clamping slot (62) is arranged at intervals along the horizontal clamping slot (61); the height of the horizontal clamping slot (61) is adapted to the diameter of the first clamping member (4), the height of the vertical clamping slot (62) is adapted to the width of the second clamping member (5), and the width of the vertical clamping slot (62) is adapted to the thickness of the second clamping member (5); both ends of the first clamping member (4) extend beyond the clamping slot (6), and the ends extending beyond the clamping slot (6) are connected to limit bolts (8); A transverse baffle (10) is also provided in the clamping slot (6) outside the second clamping member (5); A fine-adjustment plate (12) is inserted into the slot (6) between the first clamping member (4) and the second clamping member (5) and is used to fine-adjust the distance between the two first clamping members (4) according to the size of the test piece (7); The bottom of the slot plate (3) is also provided with a hole (11).

2. The slidable hinge support suitable for compression tests of specimens of different sizes according to claim 1, characterized in that: The first clamping member (4) is a steel rod, and the second clamping member (5) is a steel plate.

3. The slidable hinge support suitable for compression tests of specimens of different sizes according to claim 1, characterized in that: During the mechanical test, a moving space is ensured at the lower end of the test piece (7) to form a sliding hinge support boundary for simulating the inflection point position of a beam or column.

4. The slidable hinge support suitable for compression tests of specimens of different sizes according to claim 1, characterized in that: When the size of the test piece (7) is close to the size of the rectangular frame formed between the slot plate (3) and the side plate (2), a stainless steel plate is filled between the test piece (7) and the side plate (2), and butter is applied between the stainless steel plate and the test piece (7).

5. The slidable hinge support suitable for compression tests of specimens of different sizes according to claim 1, characterized in that: When the size of the test piece (7) is close to the size of the rectangular frame formed between the slot plate (3) and the side plate (2), the first clamp (4) and the second clamp (5) are directly removed and the transverse steel plate is inserted, and the side of the transverse steel plate in contact with the test piece (7) is processed into an arc.

6. The slidable hinge support suitable for compression tests of specimens of different sizes according to claim 1, characterized in that: A rib plate (9) is provided between the side plate (2) and the bottom plate (1).

7. The slidable hinge support suitable for compression tests of specimens of different sizes according to claim 1, characterized in that: Threaded holes are provided at four corners of the base plate (1), and the base plate (1) is bolted to the loading frame via the threaded holes.

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