Wedge-shaped tensile fixture for composite steel belt

Abstract

The utility model discloses a wedge-shaped tensile fixture for a composite steel belt. The wedge-shaped tensile fixture comprises an upper fixture body and a lower fixture body, the upper side of the upper clamp body is connected with an upper connecting shaft, an upper wedge-shaped cavity is formed in the upper clamp body, an opening is formed in the lower end of the upper wedge-shaped cavity, and an upper wedge-shaped block is arranged in the upper wedge-shaped cavity; the lower side of the lower clamp body is connected with a lower connecting shaft, a lower wedge-shaped cavity is formed in the lower clamp body, a lower wedge-shaped block is arranged in the lower wedge-shaped cavity, a top plate is arranged on the upper surface of the lower wedge-shaped block, one side of the top plate is fixedly connected with the lower wedge-shaped block through two screws, and the other side of the top plate is in threaded connection with a jacking screw. The lower end of the jacking screw abuts against the upper surface of the lower clamp body. The wedge shape can naturally lock the composite steel belt, the stress is stable, the composite steel belt is not easy to damage, the fracture is uniform, the test data is accurate, the operation is simple, the mechanical property test of steel belts with different specifications can be completed only by replacing the wedge-shaped block, the wedge-shaped inner pad and the wedge-shaped outer pad, and the utilization rate of the clamp is greatly improved.

Description

Technical Field

[0001] The utility model relates to the field of machinery, in particular to a testing tool, in particular to a composite steel belt wedge-shaped tensile fixture. Background Art

[0002] Composite steel strips undergo tensile testing using a tensile fixture to measure parameters such as breaking force, tensile strength, and yield strength. Conventional winding fixtures are known to be laborious and unstable due to the high rigidity of composite steel strips. Furthermore, they offer limited adaptability to steel strip specifications, making it difficult to test steel strips of varying widths and thicknesses using the same fixture. Summary of the Invention

[0003] The utility model aims to provide a composite steel strip wedge-shaped stretching clamp, which solves the technical problems of unstable force and low adaptability of winding clamps in the prior art.

[0004] The utility model provides a composite steel strip wedge-shaped stretching clamp, comprising an upper clamping body and a lower clamping body; the upper side of the upper clamping body is connected to an upper connecting shaft, an upper wedge-shaped cavity is provided in the upper clamping body, the width of the upper wedge-shaped cavity decreases from top to bottom, the lower end of the upper wedge-shaped cavity is provided with an opening, an upper wedge block is provided in the upper wedge cavity, and the width of the upper wedge block decreases from top to bottom; the lower side of the lower clamping body is connected to the lower connecting shaft, the lower clamping body is provided with a lower wedge cavity, the width of the lower wedge cavity decreases from bottom to top, the upper end of the lower wedge cavity is provided with an opening, the lower wedge block is provided in the lower wedge cavity, the width of the lower wedge block decreases from bottom to top, and a top plate is provided on the upper surface of the lower wedge block, one side of the top plate is fixedly connected to the lower wedge block by two screws, and the other side of the top plate is threadedly connected to a jacking screw, and the lower end of the jacking screw is tightly pressed against the upper surface of the lower clamping body.

[0005] Furthermore, the upper connecting shaft and the upper clamping body, and the lower connecting shaft and the lower clamping body are connected by anti-loosening nuts and locking nuts.

[0006] Furthermore, the upper end surface of the upper wedge-shaped block and the lower end surface of the lower wedge-shaped block are both arc surfaces.

[0007] Furthermore, a wedge-shaped inner pad is provided on one side of the upper wedge block in the upper wedge-shaped cavity and on one side of the lower wedge block in the lower wedge-shaped cavity, and a wedge-shaped outer pad is provided on the other side of the upper wedge block and the other side of the lower wedge block. The outer sides of the two wedge-shaped outer pads are respectively connected to an outer baffle plate, and the two outer baffle plates are fixedly connected to the upper clamping body and the lower clamping body respectively by positioning pins and screws.

[0008] Compared with the prior art, the effects of the present utility model are positive and obvious. The structure of the present utility model is simple. By using the wedge shape, the composite steel strip can be naturally locked and the force is stable, which is not easy to damage the composite steel strip. The fracture is uniform, the test data is accurate, and the operation is simple. Only by replacing the wedge block, the wedge inner pad, and the wedge outer pad can the mechanical property tests of steel strips with different specifications be completed, greatly improving the utilization rate of the fixture. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 FIG. is a perspective schematic view of a wedge-shaped tensile fixture for a composite steel strip of the present utility model.

[0010] Figure 2 FIG. is a front view schematic view of a wedge-shaped tensile fixture for a composite steel strip of the present utility model.

[0011] Figure 3 FIG. is a side view schematic view of a wedge-shaped tensile fixture for a composite steel strip of the present utility model.

[0012] Figure 4 FIG. is a top view schematic view of a wedge-shaped tensile fixture for a composite steel strip of the present utility model. DETAILED DESCRIPTION OF THE EMBODIMENTS

[0013] The present utility model will be further described below in conjunction with embodiments, but the present utility model is not limited to these embodiments. Any similar structure and its similar variations using the present utility model shall fall within the protection scope of the present utility model. The use of directions such as up, down, front, back, left, and right in the present utility model is only for the convenience of clear description and does not limit the technical solution of the present utility model.

[0014] As Figures 1-4 shown, a wedge-shaped tensile fixture for a composite steel strip of the present utility model includes an upper clamp body 9 and a lower clamp body 14; an upper connecting shaft 1 is connected to the upper side of the upper clamp body 9. An upper wedge-shaped cavity is provided in the upper clamp body 9, and the width of the upper wedge-shaped cavity decreases from top to bottom. An opening is provided at the lower end of the upper wedge-shaped cavity. An upper wedge block 7 is provided in the upper wedge-shaped cavity, and the width of the upper wedge block 7 decreases from top to bottom; a lower connecting shaft is connected to the lower side of the lower clamp body 14. A lower wedge-shaped cavity is provided in the lower clamp body 14, and the width of the lower wedge-shaped cavity decreases from bottom to top. An opening is provided at the upper end of the lower wedge-shaped cavity. A lower wedge block 13 is provided in the lower wedge-shaped cavity, and the width of the lower wedge block 13 decreases from bottom to top. A top plate 10 is provided on the upper surface of the lower wedge block 13. One side of the top plate 10 is fixedly connected to the lower wedge block 13 by two screws 15, and a jacking screw 12 is threadedly connected to the other side of the top plate 10. The lower end of the jacking screw 12 abuts against the upper surface of the lower clamp body 14.

[0015] Furthermore, both between the upper connecting shaft 1 and the upper clamp body 9 and between the lower connecting shaft and the lower clamp body 14 are connected by a locknut 3 and a locking nut 2.

[0016] Further, the upper end surface of the upper wedge block 7 and the lower end surface of the lower wedge block 13 are both arc surfaces.

[0017] Further, wedge-shaped inner pads 8 are arranged on one side of the upper wedge block 7 in the upper wedge cavity and on one side of the lower wedge block 13 in the lower wedge cavity, and wedge-shaped outer pads 6 are arranged on the other sides of the upper wedge block 7 and the lower wedge block 13 respectively. Outer baffles 4 are respectively connected to the outer sides of the two wedge-shaped outer pads 6, and the two outer baffles 4 are fixedly connected to the upper fixture body 9 and the lower fixture body 14 through positioning pins 5 and screws respectively.

[0018] Specifically, the locknut 3, the locking nut 2, etc. in this embodiment all adopt well-known solutions in the prior art, which are already understood by those skilled in the art and will not be elaborated here.

[0019] The working principle of this embodiment:

[0020] The locknut 3 is inserted into the upper connecting shaft 1, fixed to the upper fixture body 9 through the thread of the upper connecting shaft 1, and the locknut 3 is tightened. The upper connecting shaft 1 and the upper fixture body 9 are fixed to the upper part of the driving device, and the locking nut 2 is tightened. The wedge-shaped inner pad 8 is fixed to the upper fixture body 9 with screws, and the wedge-shaped outer pad 6 is fixed to the outer baffle 4 with screws. Similarly, the lower locknut 3, the lower connecting shaft, the locknut 3, and the lower fixture body 14 are fixed to the lower part of the driving device. The difference is that the lower assembly is rotated by a certain degree as a whole and then the locking nut 2 is tightened, and then the wedge-shaped outer pad 6 is fixed to the lower outer baffle 4 with screws. The upper wedge block 7 and the lower wedge block 13 are respectively placed into the upper wedge cavity and the lower wedge cavity, and the driving device is adjusted to a suitable space.

[0021] Push the upper wedge block 7 upward to leave enough gaps between the upper wedge block 7 and the upper wedge cavity. At the same time, insert the composite steel strip 11 from one side gap, let it go around the arc surface upward and then extend downward. The upper wedge block 7 clamps the composite steel strip 11 against the upper fixture body 9 by gravity. After the composite steel strip 11 winds out of the upper wedge block 7, it enters the gap between the lower wedge block 13 and the lower wedge cavity from one side, goes around the arc surface and extends out from the other side. Then lift the lower wedge block 13 to a sufficient height, fix one side of the top plate 10 to the lower wedge block 13 with screws 15, and tighten the jacking screw 12 on the other side of the top plate 10 to make it tightened so that the lower wedge block 13 will not fall. The lower wedge block 13 and the lower fixture body 14 clamp the composite steel strip 11 to complete the installation operation of the composite steel strip 11. Then fix the positioning pin 5 to the upper fixture body 9 and the lower fixture body 14, put the outer baffle 4 with the installed wedge-shaped outer pad 6 on the positioning pin 5 and lock it with screws, drive the equipment to start the test, obtain the data and complete the test. Remove the top plate 10, drive the equipment to drive the upper fixture body 9 to slowly press down. After the upper wedge block 7 and the lower wedge block 13 collide, the upper wedge block 7 moves upward and the lower wedge block 13 moves downward, and the completed composite steel strip 11 can fall off. After removing the composite steel strip 11, the next group of tests can be carried out.

[0022] The structure of the utility model is simple. The wedge shape is used to naturally lock the composite steel strip 11 with stable force, not easy to damage the composite steel strip 11, with uniform fracture and accurate test data. The operation is simple. Only by replacing the wedge block, the wedge-shaped inner pad 8 and the wedge-shaped outer pad 6 can the mechanical property tests of steel strips with different specifications be completed, greatly improving the utilization rate of the fixture.

Claims

1. A composite steel strip wedge-shaped stretching fixture, characterized in that: It includes an upper clamping body and a lower clamping body; an upper connecting shaft is connected to the upper side of the upper clamping body, an upper wedge-shaped cavity is arranged in the upper clamping body, the width of the upper wedge-shaped cavity decreases from top to bottom, an opening is arranged at the lower end of the upper wedge-shaped cavity, an upper wedge-shaped block is arranged in the upper wedge-shaped cavity, and the width of the upper wedge-shaped block decreases from top to bottom; a lower connecting shaft is connected to the lower side of the lower clamping body, a lower wedge-shaped cavity is arranged in the lower clamping body, the width of the lower wedge-shaped cavity decreases from bottom to top, an opening is arranged at the upper end of the lower wedge-shaped cavity, a lower wedge-shaped block is arranged in the lower wedge-shaped cavity, and the width of the lower wedge-shaped block decreases from bottom to top. A top plate is arranged on the upper surface of the lower wedge-shaped block, one side of the top plate is fixedly connected to the lower wedge-shaped block by two screws, and a jacking screw is threadedly connected to the other side of the top plate. The lower end of the jacking screw abuts against the upper surface of the lower clamping body.

2. The composite steel strip wedge-shaped stretching fixture according to claim 1, wherein: Both between the upper connecting shaft and the upper clamping body and between the lower connecting shaft and the lower clamping body are connected by anti-loosening nuts and locking nuts.

3. A composite steel strip wedge-shaped stretching fixture according to claim 1, characterized in that: The upper end surface of the upper wedge-shaped block and the lower end surface of the lower wedge-shaped block are both arc surfaces.

4. The composite steel strip wedge-shaped stretching fixture according to claim 1, characterized in that: Wedge-shaped inner pads are arranged on one side of the upper wedge-shaped block in the upper wedge-shaped cavity and on one side of the lower wedge-shaped block in the lower wedge-shaped cavity. Wedge-shaped outer pads are arranged on the other side of the upper wedge-shaped block and on the other side of the lower wedge-shaped block. Outer baffles are respectively connected to the outer sides of the two wedge-shaped outer pads. The two outer baffles are fixedly connected to the upper clamping body and the lower clamping body by positioning pins and screws respectively.

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