Special clamp for measuring shearing resistance of reinforcing mesh

Abstract

The utility model belongs to the technical field of shearing resistance experiments, and particularly relates to a special clamp for testing shearing resistance of a reinforcing mesh, which comprises a fixed seat, a telescopic rod and a large hydraulic cylinder are fixedly connected to the outer wall of the fixed seat, a lifting plate is fixedly connected to one end, far away from the fixed seat, of the telescopic rod, and the lifting plate is fixedly connected with the inner wall of the large hydraulic cylinder. A through groove is formed in the lifting plate, a clamping device is arranged on the lifting plate, the clamping device comprises a small reciprocating screw rod, and the small reciprocating screw rod penetrates through the lifting plate and is rotationally connected with the lifting plate. The special clamp for measuring the shearing resistance of the reinforcing mesh is provided with the small reciprocating screw and the two sets of moving blocks, when the small reciprocating screw rotates, the two sets of moving blocks in threaded connection with the small reciprocating screw can move towards the middle, through the design of the two sets of moving blocks, the width of a gap between the moving blocks can be adjusted, and the shearing resistance of the reinforcing mesh can be measured. And therefore, the applicability of the device is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of shear resistance experiments, in particular to a special clamp for measuring the shear resistance of a steel mesh. Background Art

[0002] The special fixture for measuring the shear resistance of steel mesh is a device used to test the shear resistance of steel mesh in a laboratory environment. This fixture is designed to fix the steel mesh on the test equipment so as to apply shear force and measure the response of the steel mesh during the test.

[0003] At present, in the prior art, for example, a Chinese patent with announcement number CN217211889U discloses a shear resistance test fixture for steel welded mesh. The device is fixed by a pressure block to keep the steel bar in a horizontal state to prevent it from bending, thereby avoiding errors in the test data caused by the bending of the steel bar during the pull test. However, the detection device of the device cannot be adjusted and cannot detect steel meshes of different models. In view of this, we propose a special fixture for measuring the shear resistance of steel meshes. Utility Model Content

[0004] The main purpose of the utility model is to provide a special clamp for measuring the shear resistance of a steel mesh, which can solve the problems raised in the above-mentioned background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model proposes a special clamp for measuring the shear resistance of a steel mesh, comprising a fixed seat, the outer wall of which is fixedly connected to a telescopic rod and a large hydraulic cylinder, the end of the telescopic rod away from the fixed seat is fixedly connected to a lifting plate, the lifting plate is fixedly connected to the inner wall of the large hydraulic cylinder, the lifting plate is provided with a through slot, and a clamping device is provided on the lifting plate, and the clamping device comprises:

[0006] A small reciprocating screw rod, the small reciprocating screw rod passes through the lifting plate and is rotatably connected to the lifting plate;

[0007] A fixed block, wherein the fixed block is penetrated by a small reciprocating screw and is threadedly connected to the fixed block;

[0008] The moving block is fixedly connected to the fixed block, and the moving block is slidably connected to the through slot.

[0009] Preferably, the moving block is provided with a slide groove, and the slide groove is slidably connected with a pressing block, so as to improve the stability of the pressing block movement.

[0010] Preferably, a moving plate is provided above the pressing block, the moving plate is provided with a sliding groove, and the sliding groove is slidably connected to the pressing block.

[0011] Preferably, a small hydraulic cylinder is fixedly connected to the inner wall of the lifting plate, and an output end of the small hydraulic cylinder is fixedly connected to the moving plate.

[0012] Preferably, the fixing seat is penetrated by a large reciprocating screw and is rotationally connected to the large reciprocating screw, and a handle is fixedly connected to the outer wall of the large reciprocating screw.

[0013] Preferably, the large reciprocating screw passes through the clamping block and is threadedly connected to the clamping block. The outer wall of the clamping block is fixedly connected with an anti-pressure plate made of rubber. The plate is used to prevent the steel bars from damaging the clamping block and increase the clamping force on the steel bars. The clamping block is passed through by a guide rod and is slidably connected to the guide rod. The guide rod is fixedly connected to the inner wall of the fixed seat.

[0014] The utility model provides a special clamp for measuring the shear resistance of steel mesh. It has the following beneficial effects:

[0015] (1) The special fixture for measuring the shear resistance of the steel mesh is provided with a small reciprocating screw and a moving block, wherein the moving blocks are provided with two groups. When the small reciprocating screw rotates, the two groups of moving blocks threadedly connected to the small reciprocating screw will move toward the middle. Through the design of the two groups of moving blocks, the width of the gap between the moving blocks can be adjusted to adapt to different types of steel bars, thereby improving the applicability of the device.

[0016] (2) The special clamp for measuring the shear resistance of the steel mesh is provided with a pressure block. The moving plate can drive the pressure block to move downward through the drive of a small hydraulic cylinder to clamp the steel bar. At the same time, the sliding connection design between the pressure block and the moving plate can make the pressure block adjust synchronously with the moving block. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying creative work.

[0018] Figure 1 It is a schematic diagram of the overall three-dimensional structure of the utility model;

[0019] Figure 2 This is a schematic diagram of the three-dimensional cross-sectional structure of the fixing seat of the utility model;

[0020] Figure 3 It is a schematic diagram of a partial three-dimensional cross-sectional structure of the utility model;

[0021] Figure 4 It is a partial three-dimensional structural schematic diagram of the utility model.

[0022] Description of Figure Numbers:

[0023] 1. Fixed seat; 11. Large reciprocating screw; 12. Handle; 13. Clamping block; 14. Guide rod; 15. Anti-pressure plate; 2. Large hydraulic cylinder; 3. Telescopic rod; 4. Lifting plate; 41. Through slot; 5. Clamping device; 51. Small reciprocating screw; 52. Moving block; 53. Slide slot; 54. Pressing block; 55. Moving plate; 56. Slide slot; 57. Small hydraulic cylinder; 58. Fixed block.

[0024] The realization of the purpose, functional features and advantages of the utility model will be further explained in conjunction with embodiments and with reference to the accompanying drawings. DETAILED DESCRIPTION

[0025] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0026] See also Figure 1-Figure 4 The utility model proposes a special clamp for measuring the shear resistance of a steel mesh, comprising a fixed seat 1, the fixed seat 1 is penetrated by a large reciprocating screw 11 and is rotatably connected to the large reciprocating screw 11, a handle 12 is fixedly connected to the outer wall of the large reciprocating screw 11, the large reciprocating screw 11 penetrates a clamping block 13 and is threadedly connected to the clamping block 13, an anti-pressure sheet 15 is fixedly connected to the outer wall of the clamping block 13, the clamping block 13 is penetrated by a guide rod 14 and is slidably connected to the guide rod 14, the guide rod 14 is fixedly connected to the inner wall of the fixed seat 1, a telescopic rod 3 and a large hydraulic cylinder 2 are fixedly connected to the outer wall of the fixed seat 1, the end of the telescopic rod 3 away from the fixed seat 1 is fixedly connected to a lifting plate 4, the lifting plate 4 is fixedly connected to the inner wall of the large hydraulic cylinder 2, a through slot 41 is opened on the lifting plate 4, and a clamping device 5 is provided on the lifting plate 4.

[0027] In the embodiment of the utility model, in order to be able to test different types of steel mesh, specifically, the clamping device 5 includes a small reciprocating screw 51, the small reciprocating screw 51 penetrates the lifting plate 4 and is rotatably connected to the lifting plate 4, a fixed block 58, the fixed block 58 is penetrated by the small reciprocating screw 51 and is threadedly connected to the fixed block 58, a moving block 52, the moving block 52 is fixedly connected to the fixed block 58, the moving block 52 is slidably connected to the through groove 41, the moving block 52 is provided with a slide groove 53, the slide groove 53 is slidably connected with a pressure block 54, a moving plate 55 is provided above the pressure block 54, the moving plate 55 is provided with a sliding groove 56, the sliding groove 56 is slidably connected to the pressure block 54, a small hydraulic cylinder 57 is fixedly connected to the inner wall of the lifting plate 4, and the output end of the small hydraulic cylinder 57 is fixedly connected to the moving plate 55;

[0028] like Figure 1 and Figure 3 As shown, there are two groups of moving blocks 52. When the small reciprocating screw 51 rotates, the two groups of moving blocks 52 threadedly connected to the small reciprocating screw 51 will move toward the middle. Through the design of the two groups of moving blocks 52, the width of the gap between the moving blocks 52 can be adjusted to adapt to different types of steel bars.

[0029] In the utility model, when in use, the steel bar is first hung on the moving block 52, and then the small reciprocating screw 51 is rotated so that the two groups of moving blocks 52 will move toward the middle to adapt to the steel bar, and then the large reciprocating screw 11 is rotated so that the two groups of clamping blocks 13 clamp the lower part of the steel bar, and then the small hydraulic cylinder 57 is started so that the moving plate 55 drives the pressure block 54 to move downward, so that the steel bar is clamped again, and then the large hydraulic cylinder 2 is started so that the lifting plate 4 drives the moving block 52 to move upward, so as to detect the steel bar.

[0030] The above description is only a preferred embodiment of the present invention, and does not limit the patent scope of the present invention. All equivalent structural changes made by using the contents of the present invention specification and drawings under the inventive concept of the present invention, or directly / indirectly applied in other related technical fields are included in the patent protection scope of the present invention.

Claims

1. A special fixture for measuring the shear resistance of a steel mesh, comprising a fixing seat (1), characterized in that: The outer wall of the fixed seat (1) is fixedly connected to a telescopic rod (3) and a large hydraulic cylinder (2); one end of the telescopic rod (3) away from the fixed seat (1) is fixedly connected to a lifting plate (4); the lifting plate (4) is fixedly connected to the inner wall of the large hydraulic cylinder (2); a through slot (41) is formed on the lifting plate (4); a clamping device (5) is provided on the lifting plate (4); the clamping device (5) comprises: a small reciprocating screw (51), the small reciprocating screw (51) passing through the lifting plate (4) and being rotationally connected to the lifting plate (4); A fixed block (58), wherein the fixed block (58) is penetrated by the small reciprocating screw (51) and is threadedly connected to the fixed block (58); A moving block (52) is fixedly connected to a fixed block (58), and the moving block (52) is slidably connected to a through slot (41).

2. A special fixture for measuring the shear resistance of steel mesh according to claim 1, characterized in that: The moving block (52) is provided with a sliding groove (53), and the sliding groove (53) is slidably connected to a pressing block (54).

3. A special fixture for measuring the shear resistance of a steel mesh according to claim 2, characterized in that: A moving plate (55) is provided above the pressing block (54), and a sliding groove (56) is provided on the moving plate (55), and the sliding groove (56) is slidably connected to the pressing block (54).

4. A special fixture for measuring the shear resistance of a steel mesh according to claim 3, characterized in that: A small hydraulic cylinder (57) is fixedly connected to the inner wall of the lifting plate (4), and an output end of the small hydraulic cylinder (57) is fixedly connected to the moving plate (55).

5. The special fixture for measuring the shear resistance of steel mesh according to claim 1, characterized in that: The fixing seat (1) is penetrated by the large reciprocating screw (11) and is rotationally connected to the large reciprocating screw (11); a handle (12) is fixedly connected to the outer wall of the large reciprocating screw (11).

6. A special fixture for measuring the shear resistance of steel mesh according to claim 5, characterized in that: The large reciprocating screw (11) passes through the clamping block (13) and is threadedly connected to the clamping block (13); an anti-pressure plate (15) is fixedly connected to the outer wall of the clamping block (13); the clamping block (13) is passed through by a guide rod (14) and is slidably connected to the guide rod (14); and the guide rod (14) is fixedly connected to the inner wall of the fixing seat (1).

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