A cable end clamping structure

Abstract

The utility model discloses a cable end clamping structure belongs to cable tensile detection technical field, including fixed base and two clamping plates, the outer surface of fixed base includes camber surface and is equipped with the side plane of camber surface both sides, two clamping plates correspond to the side plane and are equipped with the opposite sides of fixed base, and the clamping plate can be away from or close to the direction of sliding on fixed base along the side plane, is equipped with the first shape groove on camber surface, is equipped with the second shape groove on the side plane and clamping plate, and the two -way screw bolt rotatably is equipped with on fixed base, and the both ends of two -way screw rod are respectively screwed -connected with two clamping plates, and the avoiding groove is seted up on fixed base, is equipped with the knob in avoiding groove, and the knob is fixedly connected with two -way screw rod. The utility model discloses a cable end clamping structure, because the first arc groove of cable end along camber surface and fixed base are pasted, and it is in the curved state, and the difficulty of cable equivalent fixed base being pulled out and moving outward is increased, thereby avoid the situation that cable end easily slips off fixed base, and the clamping stability is good.

Description

Technical Field

[0001] This utility model relates to the field of cable tensile testing technology, and in particular, to a cable end clamping structure. Background Technology

[0002] Cables are widely used in modern industry, especially in power, communications, and construction. Cable tensile testing is a crucial method for evaluating cable quality. Its purpose is to ensure that cables can withstand expected tensile loads during use, preventing failures such as breakage and deformation, thereby guaranteeing the safety and reliability of the cables. In this test, both ends of the cable are fixed, and a tensile force is applied to one end. The cable deforms under this force until it breaks. Throughout the process, the amount of deformation and the applied tensile force are recorded, allowing the determination of the cable's tensile strength (i.e., the maximum tensile force the cable can withstand before breaking) and elongation at break (i.e., the cable's deformation capacity at tensile fracture).

[0003] Securely fixing the cable end is the first step in the cable tensile testing process. An insecurely fixed cable end can easily cause the cable to loosen under external tension, thus affecting normal testing. Currently, the clamping structure used to fix the cable end on cable tensile testing devices generally includes two opposing clamps. One clamp is movable relative to the other under the drive of a cylinder. During use, the cable end is clamped and fixed between the two clamps. However, this clamping structure can also cause the cable end to detach from the clamps under excessive tension, especially for cables with smaller diameters where the clamping area is particularly limited, making detachment even more common.

[0004] Therefore, the inventors improved the clamping structure to enhance the reliability of clamping and fixing the cable end. Utility Model Content

[0005] The technical problem to be solved by this utility model is: in order to overcome the above-mentioned defects in the prior art, a reliable cable end clamping structure is provided.

[0006] The technical solution adopted by this utility model to solve its technical problem is: a cable end clamping structure, including a fixed base and two clamping plates. The outer surface of the fixed base includes an arc surface and side planes on both sides of the arc surface. The two clamping plates are disposed on opposite sides of the fixed base corresponding to the side planes. The clamping plates can slide on the fixed base in a direction away from or near the side planes. A first shaped groove is provided on the arc surface, and a second shaped groove is provided on the side planes and the clamping plates. A bidirectional bolt is rotatably provided on the fixed base. The two ends of the bidirectional bolt are threadedly connected to the two clamping plates respectively. An avoidance groove is provided on the fixed base, and a knob is provided in the avoidance groove. The knob is fixedly connected to the bidirectional bolt.

[0007] Furthermore, an arc-shaped protrusion is provided on the wall of the second arc groove, and the arc-shaped protrusion is perpendicular to the central axis of the portion of the cable corresponding to the position of the second arc groove.

[0008] Furthermore, a slot is provided on the side plane along the length direction of the bidirectional screw, and a protruding post is provided on the clamping plate. The post and the slot cooperate with each other, and the post can be slidably inserted into the slot.

[0009] Furthermore, the middle part of the bidirectional screw is a smooth section, and the two sides of the smooth section are threaded sections. The threaded sections extend to the outside of the fixed seat and are threadedly connected to the clamping plate. The center of the knob is fixedly connected to the smooth section.

[0010] Furthermore, a bearing is provided between the bidirectional screw and the fixed base.

[0011] Furthermore, the knob has a disc-shaped structure, and an anti-slip part is provided on the outer circular surface of the knob.

[0012] Furthermore, a protruding post is provided on the arc surface of the fixing seat.

[0013] Furthermore, the two clamping plates are arranged symmetrically about the protruding post.

[0014] The beneficial effects of this utility model are as follows: The cable end clamping structure of this utility model has the following beneficial effects:

[0015] 1. The cable end has two clamping points, which improves the reliability of cable clamping. In addition, since the first arc groove along the arc surface of the cable end is in contact with the fixing seat and is in a bent state, it increases the difficulty of the cable being pulled outward from the fixing seat, thereby avoiding the situation where the cable end easily slips off the fixing seat, and the clamping stability is good;

[0016] 2. When the user rotates the knob, the clamps on both sides can be driven to clamp and fix the cable on the fixed base at the same time. The operation is simple and convenient, which greatly improves the installation efficiency and speeds up the testing process.

[0017] 3. The bidirectional screw drive ensures high precision and stability in the movement of the clamping plate, and has a self-locking capability, resulting in high reliability. Attached Figure Description

[0018] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0019] Figure 1 This is a perspective view of the cable end clamping structure according to Embodiment 1 of this utility model;

[0020] Figure 2 yes Figure 1 A perspective view of the fixing seat in the cable end clamping structure shown;

[0021] Figure 3 yes Figure 1 Top view of the cable end clamping structure shown;

[0022] Figure 4 yes Figure 1 Front view of the cable end clamping structure shown;

[0023] Figure 5 yes Figure 3 The cable end clamping structure shown is a cross-sectional view along AA.

[0024] Figure 6 This is a perspective view of the cable end clamping structure of Embodiment 2 of this utility model.

[0025] In the diagram: 1. Fixing base; 101. Arc surface; 102. Side plane; 1021. Slot; 103. First arc groove; 104. Second arc groove; 11. Clearance groove; 105. Arc-shaped protrusion; 106. Protrusion post; 2. Clamping plate; 21. Insert post; 3. Double-acting screw; 31. Bearing; 4. Knob; 41. Anti-slip part. Detailed Implementation

[0026] The present invention will now be described in detail with reference to the accompanying drawings. These drawings are simplified schematic diagrams, illustrating only the basic structure of the present invention, and therefore only show the components relevant to the present invention.

[0027] Example 1

[0028] Please see Figures 1-5This utility model provides a cable end clamping structure, including a fixed base 1 and two clamping plates 2. The outer surface of the fixed base 1 includes an arc surface 101 and side planes 102 disposed on opposite sides of the arc surface 101. The two clamping plates 2 are disposed on opposite sides of the fixed base 1, corresponding to the side planes 102, and the clamping plates 2 can slide on the fixed base 1 in a direction away from or close to the side planes 102. A first arc groove 103 is provided on the arc surface 101, and a second arc groove 104 is provided on both the side planes 102 and the clamping plates 2. A bidirectional screw 3 is rotatably mounted on the fixed base 1. The bidirectional screw 3 passes through the fixed base 1, and the helical directions at both ends of the bidirectional screw 3 are opposite. The two ends of the bidirectional screw 3 are threadedly connected to the two clamping plates 2 respectively. An avoidance groove 11 is provided on the fixed base 1, and a knob 4 is disposed in the avoidance groove 11. The knob 4 is fixedly connected to the bidirectional screw 3.

[0029] In use, one end of the cable is inserted into the first arc groove 103 through the second arc groove 104 on one side, and after circling half a circle around the fixing base 1, it is moved to the position of the second arc groove 104 on the other side. At this time, the user manually turns the knob 4 to drive the bidirectional screw 3 to rotate, which in turn drives the two clamping plates 2 on both sides of the fixing base 1 to move synchronously, and finally fixes the cable in the space formed by the second arc groove 104 of the side plane 102 and the second arc groove 104 of the clamping plate 2. In this way, the clamping structure can fix and clamp the end of the cable.

[0030] During the above process, two points on the cable end are clamped and fixed, improving the reliability of cable clamping. Furthermore, because the cable end is in contact with the first arc groove 103 along the arc surface 101 and is in a bent state, it increases the difficulty of the cable being pulled outwards relative to the fixed seat 1, thus preventing the cable end from easily slipping off the fixed seat 1, resulting in good clamping stability. Simultaneously, when the user rotates the knob 4, it can simultaneously drive the clamping plates 2 on both sides to clamp and fix the cable to the fixed seat 1, making operation simple and convenient, greatly improving installation efficiency, and thus accelerating the testing process. Moreover, the bidirectional screw 3 drives the clamping plates 2 with high precision and strong stability, and has a self-locking capability, ensuring high reliability in use.

[0031] In a preferred embodiment, an arc-shaped protrusion 105 is provided on the wall of the second arc groove 104. The arc-shaped protrusion 105 is perpendicular to the central axis of the portion of the cable corresponding to the position of the second arc groove 104. Thus, when the end of the cable is pressed and fixed within the space formed by the two second arc grooves 104, the arc-shaped protrusion 105 increases the pressing area on the cable, thereby increasing friction and preventing cable slippage. Simultaneously, the arc-shaped protrusion 105 presses vertically onto the cable surface, and the indentation formed by the arc-shaped protrusion 105 on the cable surface is perpendicular to the central axis of the cable (i.e., the direction of movement when the cable slips), further increasing the difficulty of cable slippage.

[0032] In this embodiment, a slot 1021 is provided on the side plane 102 along the length direction of the bidirectional screw 3, and a post 21 protrudes from the clamping plate 2. The post 21 and the slot 1021 cooperate with each other, and the post 21 can be slidably inserted into the slot 1021. In this way, the cooperation between the post 21 and the slot 1021 restricts the rotation of the clamping plate 2 relative to the fixed base 1. Therefore, when the bidirectional screw 3 rotates, it can drive the clamping plate 2 to move along the direction of the slot 1021, thereby clamping or releasing the cable end.

[0033] In this embodiment, the middle section of the bidirectional screw 3 is a smooth section, and the two sides of the smooth section are threaded sections. These threaded sections extend to the outside of the fixed base 1 and are threadedly connected to the clamping plate 2. The center of the knob 4 is fixedly connected to the smooth section. To ensure the stability of the connection between the bidirectional screw 3 and the fixed base 1 and to prevent wear at the connection point, a bearing 31 is provided between the bidirectional screw 3 and the fixed base 1. There are two bearings 31, symmetrically located on opposite sides of the knob 4.

[0034] Furthermore, the knob 4 has a disc-shaped structure, and an anti-slip part 41 is provided on the outer circular surface of the knob 4. The anti-slip part 41 can increase the friction between the knob 4 and the user's hand, thereby making it easier for the user to turn the knob. The anti-slip part 41 can be a protrusion, a groove, or a knurling, and is not limited here.

[0035] Example 2

[0036] Please see Figure 2 The difference between the cable end clamping structure provided in Embodiment 2 of this utility model and Embodiment 1 is that a protruding post 106 is provided on the arc surface 101 of the fixing base 1. In this embodiment, the two clamping plates 2 are symmetrically arranged about the protruding post 106.

[0037] In use, the cable end passes through the space formed between the side plane 102 on one side and the clamping plate 2, wraps around the protrusion 106 once, and then enters the space formed between the side plane 102 on the other side and another clamping plate 2. Since the cable is wrapped around the protrusion 106, the connection between the cable and the protrusion 106 is tighter, preventing the cable from loosening relative to the protrusion 106. Compared with the first embodiment, it can further prevent the cable end from detaching from the fixing seat 1, effectively ensuring the normal performance of the cable tensile test.

[0038] Based on the above-described preferred embodiments of this utility model, and through the foregoing description, those skilled in the art can make various changes and modifications without departing from the scope of this utility model. The technical scope of this utility model is not limited to the contents of the specification, but must be determined according to the scope of the claims.

Claims

1. A cable end holding structure characterized by: The device includes a fixed base and two clamping plates. The outer surface of the fixed base includes an arc surface and side planes on both sides of the arc surface. The two clamping plates are located on opposite sides of the fixed base corresponding to the side planes. The clamping plates are slidably mounted on the fixed base in a direction away from or near the side planes. A first arc groove is provided on the arc surface, and a second arc groove is provided on the side planes and the clamping plates. A bidirectional screw is rotatably provided on the fixed base. The two ends of the bidirectional screw are threadedly connected to the two clamping plates respectively. A clearance groove is provided on the fixed base, and a knob is provided in the clearance groove. The knob is fixedly connected to the bidirectional screw.

2. The cable end gripping structure of claim 1, wherein: The second arc groove has an arc-shaped protrusion on its groove wall, and the arc-shaped protrusion is perpendicular to the central axis of the portion of the cable corresponding to the position of the second arc groove.

3. The cable end holding structure according to claim 1, wherein: A slot is provided on the side plane along the length of the bidirectional screw, and a protruding post is provided on the clamp plate. The post and the slot cooperate with each other, and the post can be slidably inserted into the slot.

4. The cable end holding structure according to claim 1, wherein: The middle part of the bidirectional screw is a smooth section, and the two sides of the smooth section are threaded sections. The threaded sections extend to the outside of the fixed base and are threadedly connected to the clamp plate. The center of the knob is fixedly connected to the smooth section.

5. The cable end clamping structure as described in claim 4, characterized in that: A bearing is provided between the bidirectional screw and the fixed base.

6. The cable end clamping structure as described in claim 1, characterized in that: The knob has a disc-shaped structure, and an anti-slip part is provided on the outer circular surface of the knob.

7. The cable end clamping structure as described in claim 1, characterized in that: The fixed base has a protruding post on its arc surface.

8. The cable end clamping structure as described in claim 7, characterized in that: The two clamping plates are symmetrically arranged about the protruding post.

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