Wire end clamping device for testing tensile strength of stranded wire

Abstract

The utility model belongs to the technical field of stranded wire clamping, and particularly relates to a wire end clamping device for testing the tensile strength of a stranded wire, which comprises a frame, a clamping assembly, a pushing assembly and a positioning plate, the frame comprises a resetting assembly, a sliding rail and a stranded wire inlet, the clamping assembly comprises a clamping piece and a sliding rod, and the pushing assembly is arranged on the sliding rod. The pushing assembly comprises a hydraulic cylinder and a pushing part and pushes the clamping assembly to move towards the center of the frame, a sliding hole matched with the sliding rod is formed in the middle of the positioning plate, positioning teeth connected with the reset assembly in a clamped mode are arranged at the two ends of the positioning plate, and the positioning plate is connected with the reset assembly in a clamped mode. During detection, the clamping block is tightly abutted against the stranded wire, and the stranded wire is not easy to loosen and slip out of the clamping block under a tension test, so that the detection result of the stranded wire is accurate.

Description

Technical Field

[0001] The utility model belongs to the technical field of stranded wire clamping, and particularly relates to a wire head clamping device for testing the tensile strength of stranded wires. Background Art

[0002] A steel stranded wire is a steel product composed of multiple steel wires stranded together. According to different materials of the product, it can be high-carbon steel wire rods, stainless steel wire rods or medium-low carbon steel wire rods. Before the steel stranded wire is used, it is necessary to carry out prestress strength detection treatment on it, that is, to detect its tensile strength, wear resistance and other characteristics. However, during actual detection, when the clamping block abuts against the steel stranded wire, the contact area is small, and the steel stranded wire is prone to loosen and slide from the surface of the clamping block under the action of tension, which affects the detection of the steel stranded wire and poses a certain degree of safety hazard. Content of the Utility Model

[0003] In order to solve the above technical problems, the utility model provides a wire head clamping device for testing the tensile strength of stranded wires, which includes a frame, a positioning plate, two clamping components arranged corresponding to the left and right, and two pushing components. The frame includes a slide rail, a reset component and a stranded wire inlet arranged at the center of the lower side of the frame. The slide rail is arranged on the upper and lower inner side surfaces of the frame, and the reset component is arranged on the left and right inner side surfaces of the frame. The clamping component includes a clamping piece and a sliding rod. The clamping piece is sleeved on the sliding rod and is slidably connected with the sliding rod. The upper and lower ends of the sliding rod are respectively slidably connected with the slide rail at the corresponding end. The pushing component includes a hydraulic cylinder and a pushing piece. The fixed ends of the two hydraulic cylinders are respectively fixedly arranged on the left and right inner side walls of the frame, and the two pushing pieces are respectively fixedly connected to the telescopic ends of the corresponding hydraulic cylinders. A slide hole matching the sliding rod is arranged in the middle of the positioning plate, and positioning teeth for being clamped with the reset component are arranged at both ends of the positioning plate. The sliding rod slidably penetrates through the slide hole. The positioning plate can move up and down along the sliding rod and abuts against the upper side surface of the clamping block. The reset component is used to limit the position of the positioning plate.

[0004] Further, the clamping piece is an inverted cone, a fixed block is arranged on the side of the clamping piece away from the center of the frame, and a vertical concave surface is arranged on the side of the clamping piece close to the center of the frame. The vertical concave surface is used to increase the contact area with the stranded wire.

[0005] Further, a rough wear-resistant layer is arranged on the vertical concave surface for increasing the friction force during the stranded wire test. Further, an inclined arc surface and a fixed groove are arranged on the side of the pushing piece close to the center of the frame. The inclined arc surface is matched with and slidably connected to the side surface of the clamping piece, and the fixed groove is matched with the shape and size of the fixed block and is slidably connected to the fixed block for fixing the vertical concave surface of the clamping piece to face the center of the frame.

[0006] Further, the reset component includes a spring, a positioning groove and a positioning tooth plate. The positioning tooth plate is arranged in the positioning groove, and the lower left corner of the positioning tooth plate is hinged to the lower left corner of the positioning groove. The upper left end of the positioning tooth plate is connected to the upper left end of the positioning groove through a spring. The positioning tooth is engaged with the positioning tooth plate. The positioning tooth plate is used to clamp and fix the position of the positioning block. After the stranding test is completed, the spring and the positioning groove are used to press and rotate the positioning tooth plate to cancel the engagement and enable the positioning plate to move upward along the positioning groove.

[0007] The present utility model further includes other devices or components that can enable the wire head clamping device for testing the tensile strength of stranded wires to be used normally, which are all conventional technical means in the art. In addition, the springs and frames not specified in the present utility model both adopt conventional technical means in the art.

[0008] The working principle of the present utility model is as follows: when the device is in use, the stranded wire to be tested enters through the stranded wire inlet and passes through the center of the clamping member. The positioning plate is pushed downward to drive the clamping member to move downward until the clamping member clamps the stranded wire tightly. The positioning plate and the reset component are tightly engaged. The hydraulic cylinder is started to squeeze the pushing member towards the center of the frame, which, together with the clamping member and the positioning plate, further clamps the stranded wire tightly.

[0009] The beneficial effects of the present utility model are as follows: the device has a simple structure and convenient operation. During detection, the clamping block is in close contact with the stranded wire, and the stranded wire is not likely to loosen and slip out of the clamping block under the tensile test, ensuring the accuracy of the detection result of the stranded wire. Description of the Drawings

[0010] The following further describes the present utility model in conjunction with the drawings and embodiments.

[0011] Figure 1 is the overall structural schematic diagram of the present utility model.

[0012] Figure 2 is the structural schematic diagram of the clamping member and the pushing member in the present utility model.

[0013] Figure 3 is the structural schematic diagram of the positioning tooth plate and the positioning plate in the present utility model. Detailed Embodiments

[0014] The following clearly describes the present utility model in conjunction with the drawings in the embodiments of the present utility model and specific embodiments. The description here is only used to explain the present utility model, but not to limit the present utility model. Based on the embodiments of the present utility model, all other embodiments obtained by those skilled in the art without creative efforts, any modifications, equivalent replacements, improvements, etc., shall be included in the protection scope of the present utility model.

[0015] Embodiment

[0016] AsFigures 1 to 3 As shown in the figure, a wire end clamping device for testing the tensile strength of twisted wires provided by the present utility model includes a frame 1, a positioning plate 2, two clamping components arranged corresponding to each other left and right, and two pushing components. The frame 1 includes a slide rail 13, a reset component, and a twisted wire inlet 3 provided at the center of the lower side of the frame 1. The slide rail 13 is arranged on the upper and lower inner side surfaces of the frame 1. A reset component is arranged on the left and right inner side surfaces of the frame 1. The clamping component includes a clamping piece 4 and a sliding rod 5. The clamping piece 4 is sleeved on the sliding rod 5 and is slidably connected to the sliding rod 5. The upper and lower ends of the sliding rod 5 are respectively slidably connected to the slide rail 13 at the corresponding ends. The pushing component includes a hydraulic cylinder 6 and a pushing piece 7. The fixed ends of the two hydraulic cylinders 6 are respectively fixedly arranged on the left and right inner side walls of the frame 1. The two pushing pieces 7 are respectively fixedly connected to the telescopic ends of the corresponding hydraulic cylinders 6. A sliding hole 8 matching the sliding rod 5 is provided in the middle of the positioning plate 2, and positioning teeth 9 engaged with the reset component are provided at both ends of the positioning plate 2. The sliding rod 5 slidably penetrates through the sliding hole 8. The positioning plate 2 can move up and down along the sliding rod 5 and abuts against the upper side surface of the clamping block 4. The reset component is used to limit the position of the positioning plate 2.

[0017] As a further measure of the present utility model, the clamping piece 4 is an inverted cone. A fixed block 10 is provided on the side of the clamping piece 4 away from the center of the frame 1. A vertical concave surface 11 is provided on the side of the clamping piece 4 close to the center of the frame 1. The vertical concave surface 11 is used to increase the contact area with the twisted wire; a rough and wear-resistant layer 12 is provided on the vertical concave surface 11 to increase the friction force during the twisted wire test; an inclined arc surface 14 and a fixed groove 15 are provided on the side of the pushing piece 7 close to the center of the frame 1. The inclined arc surface 14 matches and is slidably connected to the side surface of the clamping piece 4. The fixed groove 15 matches the shape and size of the fixed block 10 and is slidably connected to the fixed block 10 to fix the vertical concave surface 11 of the clamping piece 4 facing the center of the frame 1; the reset component includes a spring 16, a positioning groove 17, and a positioning tooth plate 18. The positioning tooth plate 18 is arranged in the positioning groove 17, and the lower left corner of the positioning 18 is hinged to the lower left corner of the positioning groove 17. The upper left end of the positioning tooth plate 18 is connected to the upper left end of the positioning groove 17 through the spring 16. The positioning tooth 9 and the positioning tooth plate 18 are engaged with each other. The positioning tooth plate 18 is used to clamp and fix the position of the positioning block 2. The spring 16 and the positioning groove 17 are used to press and rotate the positioning tooth plate 18 after the twisted wire test is completed to cancel the clamping of the positioning plate 2 and allow it to move up along the positioning groove 17.

[0018] The working principle of the present utility model is that when the device is in use, the twisted wire to be tested passes through the twisted wire inlet 3 and passes through the center of the clamping piece 4. The positioning plate 2 is pushed downward to abut against the clamping piece 4 and move downward until the clamping piece 4 clamps the twisted wire tightly. The positioning plate 2 and the reset component are clamped tightly. The hydraulic cylinder 6 is started to squeeze the pushing piece 7 towards the center of the frame 1, which, together with the clamping piece 4 and the positioning plate 2, further clamps the twisted wire tightly.

[0019] Embodiments of the present utility model have been described above. The above description is exemplary and not exhaustive, and is also not limited to the disclosed embodiments. Many modifications and variations will be apparent to those of ordinary skill in the art without departing from the scope and spirit of the described embodiments.

Claims

1. A wire end clamping device for testing the tensile strength of twisted wires, comprising a frame, a positioning plate, two clamping components arranged corresponding to the left and right, and two pushing components, characterized in that The frame includes a slide rail, a reset component, and a wire stranding inlet provided at the center of the lower side of the frame. The slide rail is provided on the upper and lower inner side surfaces of the frame. The reset component is provided on the left and right inner side surfaces of the frame. The clamping component includes a clamping member and a sliding rod. The clamping member is sleeved on the sliding rod and is slidably connected to the sliding rod. The upper and lower ends of the sliding rod are respectively slidably connected to the slide rails at the corresponding ends. The pushing component includes a hydraulic cylinder and a pushing member. The fixed ends of the two hydraulic cylinders are respectively fixedly provided on the left and right inner side walls of the frame. The two pushing members are respectively fixedly connected to the telescopic ends of the corresponding hydraulic cylinders. A sliding hole matching the sliding rod is provided in the middle of the positioning plate, and positioning teeth for engaging with the reset component are provided at both ends of the positioning plate. The sliding rod slidably penetrates through the sliding hole. The positioning plate can move up and down along the sliding rod and abuts against the upper side surface of the clamping block. The reset component is used to limit the position of the positioning plate.

2. The wire end clamping device for testing the tensile strength of stranded wires according to claim 1, wherein: The clamping member is an inverted cone. A fixed block is provided on the side of the clamping member away from the center of the frame, and a vertical concave surface is provided on the side of the clamping member close to the center of the frame.

3. The wire end clamping device for testing the tensile strength of twisted wires according to claim 2, characterized in that: A rough wear-resistant layer is provided on the vertical concave surface.

4. The wire-end clamping device for testing the tensile strength of twisted wires according to claim 2, wherein: An inclined arc surface and a fixed groove are provided on the side of the pushing member close to the center of the frame. The inclined arc surface is matched with and slidably connected to the side surface of the clamping member. The fixed groove is matched with the shape and size of the fixed block and is slidably connected to the fixed block.

5. The wire-end clamping device for testing the tensile strength of twisted wires according to claim 1, wherein: The reset component includes a spring, a positioning groove, and a positioning tooth plate. The positioning tooth plate is provided in the positioning groove, and the lower left corner of the positioning tooth plate is hingedly connected to the lower left corner of the positioning groove. The upper left end of the positioning tooth plate is connected to the upper left end of the positioning groove through a spring. The positioning tooth and the positioning tooth plate are engaged with each other.

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