Cable tensioning device

Abstract

The utility model relates to a cable tensioning device which comprises a supporting frame, a sliding rail is arranged on the upper side of the supporting frame, clamping devices are oppositely arranged at the two ends of the sliding rail, and the clamping devices are connected with the sliding rail in a sliding mode. A double-head air cylinder is arranged on the bottom side of the supporting frame and is parallel to the direction of the sliding rail, and the two ends of the double-head air cylinder are connected with the limiting rods of the clamping devices at the two ends of the sliding rail respectively. The clamping devices are driven by the air cylinders to move towards the two ends of the sliding rail, so that the cable between the clamping devices at the two ends of the sliding rail is tensioned.

Description

Technical Field

[0001] The utility model relates to the field of cable cutting, in particular to a cable tensioning device. Background Art

[0002] When cutting cables, in order to ensure the cutting accuracy, a clamp is used to clamp the cables. The existing clamping clamps are generally clamped by two clamping blocks, which can easily cause damage to the cable surface during the process. Therefore, a cable tensioning device is urgently needed to tension the cable for easy cutting. Utility Model Content

[0003] In order to solve the above technical deficiencies, the utility model provides a cable tensioning device, which solves the problem of labor-intensive cable cutting.

[0004] The utility model discloses a cable tensioning device, including a support frame, a slide rail is arranged on the upper side of the support frame, clamping devices are arranged at two ends of the slide rail relatively, the clamping device and the slide rail are slidably connected, and the structure of the clamping device is as follows: it includes a sleeve, a tightening hole is arranged at one end of the sleeve, the inner diameter of the tightening hole gradually decreases from the outside of the sleeve to the inside, a No. 1 through hole is arranged in the sleeve at the end with the smaller inner diameter of the tightening hole, the smallest inner diameter of the tightening hole is equal to the inner diameter of the No. 1 through hole, the No. 1 through hole extends to the other end of the sleeve, the tightening hole is butted against the No. 1 through hole, a sliding column is axially arranged in the No. 1 through hole, the sliding column is slidably connected to the No. 1 through hole, and a No. 2 through hole is axially arranged on the sliding column A through hole, a plurality of pressure blocks are provided at annular intervals in the axial direction of the sliding column at one end close to the tightening hole, the pressure blocks are connected to the sliding column by elastic metal sheets, the pressure blocks are located in the tightening hole, and the thickness of the pressure blocks in the radial direction of the tightening hole gradually decreases from the end away from the sliding column to the end close to the sliding column, and the outer surface of the pressure block contacts the inner surface of the tightening hole, a limiting long hole is provided on the bottom side of the sleeve, the limiting long hole is arranged along the axial direction of the sleeve and passes through the wall thickness of the sleeve, a limiting rod is provided on one side of the sliding column, and the limiting rod passes through the limiting long hole; a double-headed cylinder is provided on the bottom side of the support frame, the double-headed cylinder is parallel to the direction of the slide rail, and the two ends of the double-headed cylinder are respectively connected to the limiting rods of the clamping device at both ends of the slide rail.

[0005] Furthermore, a vertical baffle is provided on the supporting frame on the outer side relative to the clamping device, and a through hole No. 3 is provided on the baffle, and the through hole No. 3 is coaxial with the through hole No. 1. A spring is provided between the baffle and the end of the sleeve of the clamping device, and the two ends of the spring are fixedly connected to the baffle and the end of the sleeve.

[0006] Furthermore, rubber gaskets are provided on the inner sides of the pressing blocks.

[0007] Furthermore, one end of the elastic metal sheet is inserted into the sliding column, and the other end is inserted into the pressing block.

[0008] The utility model provides a cable tensioning device, when the cable passes through the device, the cylinder is extended to achieve the clamping and tensioning of the cable, the operation is convenient, and the surface of the cable is not easily damaged. BRIEF DESCRIPTION OF THE DRAWINGS

[0009] Figure 1 It is a schematic diagram of the structure of the utility model;

[0010] Figure 2 It is a structural schematic diagram of the clamping device of the utility model. DETAILED DESCRIPTION

[0011] In order to further explain the technical means and effects adopted by the present invention to achieve the predetermined purpose of the utility model, the specific implementation method, structure, characteristics and effects of the present invention are described in detail below in combination with the accompanying drawings and preferred embodiments.

[0012] Embodiment 1:

[0013] like Figure 1-Figure 2As shown, the utility model discloses a cable tensioning device, including a support frame 1, a slide rail 2 is provided on the upper side of the support frame 1, clamping devices are relatively provided at both ends of the slide rail 2, the clamping device is slidably connected to the slide rail 2, and the clamping device can slide along the slide rail 2. The structure of the clamping device is: including a sleeve 3, a tightening hole 4 is provided at one end of the sleeve 3, the inner diameter of the tightening hole 4 gradually decreases from one end of the sleeve 3 inwardly, a No. 1 through hole 5 is provided in the sleeve 3 at the end with the smaller inner diameter of the tightening hole 4, the smallest inner diameter of the tightening hole 4 is equal to the inner diameter of the No. 1 through hole 5, the No. 1 through hole 5 extends to the other end of the sleeve 3, the tightening hole 4 is butted with the No. 1 through hole 5, and the A sliding post 6 is axially arranged in the through hole No. 1 5, and the sliding post 6 is slidably connected with the through hole No. 1 5. The sliding post 6 can slide in the through hole No. 1 5 along the axial direction. A through hole No. 2 15 is axially arranged on the sliding post 6, and the inner diameter of the through hole No. 2 15 is larger than the outer diameter of the cable. The sliding post 6 is provided with a plurality of pressure blocks 7 at intervals in an annular shape in the axial direction at one end close to the tightening hole 4. The pressure blocks 7 are connected to the sliding post 6 through an elastic metal sheet 8. The pressure blocks 7 are located in the tightening hole 4. The thickness of the pressure blocks 7 in the radial direction of the tightening hole 4 gradually decreases from the end away from the sliding post 6 to the end close to the sliding post 6, and the outer surface of the pressure blocks 7 contacts the inner surface of the tightening hole 4. When the sliding post 6 moves into the through hole No. 1 5, The slide column 6 drives the pressure block 7 to move in the tightening hole 4 toward the No. 1 through hole 5. Several pressure blocks 7 move along the tightening hole 4 with a gradually decreasing inner diameter to cause the center to shrink until the inner side of the pressure block 7 abuts against the outer surface of the cable to clamp the cable. At this time, the smallest inner diameter of the annular structure formed by the pressure block 7 is slightly smaller than the outer diameter of the cable, and the pressure block 7 is multiple, with a larger clamping surface for the cable and in an annular shape, so the cable will not be damaged during the clamping process. A limiting long hole 9 is provided on the bottom side of the sleeve 3. The limiting long hole 9 is axially arranged along the sleeve 3 and passes through the wall thickness of the sleeve 3. A limiting rod 10 is provided on one side of the slide column 6. The limiting rod 10 passes through the limiting long hole 9. The limiting long hole 9 limits the slide column 6. Horizontal displacement; a double-headed cylinder 11 is provided on the bottom side of the support frame 1, and the double-headed cylinder 11 is parallel to the direction of the slide rail 2. The two ends of the double-headed cylinder 11 are respectively connected to the limit rods 10 of the clamping devices at both ends of the slide rail 2. When the cable needs to be cut, the cable is passed through the clamping devices at both ends of the slide rail 2, and the double-headed cylinder 11 pushes the limit rod 10 outward, and the limit rod 10 drives the slide column 6 to move in the direction away from the tightening hole 4 in the No. 1 through hole 5, and drives the pressure block 7 to move along the tightening hole 4 with a gradually decreasing inner diameter to shrink its center. When the pressure block 7 clamps the cable, the clamping device drives the cable to move to both sides along the slide rail 2, and tightens the cable in the middle position of the two clamping devices.

[0014] When the double-headed cylinder 11 drives the two limit rods 10 to move to the closest position, that is, the limit rods 10 are located at the innermost end of the limit long hole 9, and the clamping device is in a released state. When the double-headed cylinder 11 drives the limit rods 10 to move outward to the outermost end of the limit long hole 9 or before the outermost end, the clamping device clamps the cable and maintains the clamping state. When the double-headed cylinder 11 continues to extend, the two clamping devices move outward on the slide rail 2, so that the cable remains in a tensioned state.

[0015] A vertical baffle 13 is provided on the support frame 1 on the outer side relative to the clamping device, and a through hole 16 No. 3 is provided on the baffle 13 for passing the cable, and the through hole 16 No. 3 is coaxial with the through hole 5 No. 1, and a spring 14 is provided between the baffle 13 and the end of the sleeve 3 of the clamping device, and the two ends of the spring 14 are fixedly connected to the baffle 13 and the end of the sleeve 3. In order to prevent the clamping device from displacing when the pressure block 7 does not clamp the cable, when the pressure block 7 does not clamp the cable, the force applied by the pressure block 7 and the slide column 6 to the sliding sleeve 3 is less than the force that causes the spring 14 to deform. At this time, the slide column 6 and the pressure block 7 only displace in the sleeve 3, and the sleeve 3 is stationary. When the pressure block 7 clamps the cable, the force applied by the pressure block 7 and the slide column 6 to the sleeve 3 is greater than the force that causes the spring 14 to deform. At this time, the sleeve 3, the pressure block 6 and the slide column 6 displace outward together, preventing the clamping device from not clamping the cable when the double-headed cylinder 11 reaches the stroke limit, resulting in the cable being unable to be tightened. At the same time, when the cable is released, the spring 14 can limit the position of the sleeve 3 to facilitate release.

[0016] A rubber gasket 12 is provided on the inner side of the pressing block 7 to prevent the clamping device from damaging the outer surface of the cable.

[0017] One end of the elastic metal sheet 8 is inserted into the sliding column 6, and the other end is inserted into the pressing block 7 to ensure the strength of the structure.

[0018] In the description of the present application, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying 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 a limitation on the present application. In addition, the terms "first" and "second" are used only for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Therefore, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present application, the meaning of "multiple" is two or more, unless otherwise clearly and specifically defined.

[0019] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be an interactive relationship between two elements. For ordinary technicians in this field, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0020] In the present application, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may include that the first and second features are in direct contact, or may include that the first and second features are not in direct contact but are in contact through another feature between them. Moreover, a first feature being "above", "above" and "above" a second feature includes that the first feature is directly above and obliquely above the second feature, or simply indicates that the first feature is higher in level than the second feature. A first feature being "below", "below" and "below" a second feature includes that the first feature is directly below and obliquely below the second feature, or simply indicates that the first feature is lower in level than the second feature.

[0021] The above description is only a preferred embodiment of the present invention and does not constitute any form of limitation to the present invention. Although the present invention has been disclosed as a preferred embodiment as above, it is not intended to limit the present invention. Any technical personnel in this field can make some changes or modify the technical contents disclosed above into equivalent embodiments without departing from the scope of the technical solution of the present invention. However, any simplified modification, equivalent change and modification made to the above embodiments based on the technical essence of the present invention without departing from the content of the technical solution of the present invention still fall within the scope of the technical solution of the present invention.

Claims

1. A cable tensioning device, comprising a support frame (1), characterized in that: A slide rail (2) is provided on the upper side of the support frame (1), and clamping devices are provided at both ends of the slide rail (2) opposite to each other. The clamping device and the slide rail (2) are slidably connected. The structure of the clamping device is as follows: it includes a sleeve (3), one end of the sleeve (3) is provided with a tightening hole (4), the inner diameter of the tightening hole (4) gradually decreases from the outside to the inside of the sleeve (3), and a No. 1 through hole (5) is provided in the sleeve (3) at the end with the smaller inner diameter of the tightening hole (4). The smallest inner diameter of the tightening hole (4) is equal to the inner diameter of the No. 1 through hole (5), the No. 1 through hole (5) extends to the other end of the sleeve (3), the tightening hole (4) is butted with the No. 1 through hole (5), a sliding column (6) is axially arranged in the No. 1 through hole (5), the sliding column (6) is slidably connected with the No. 1 through hole (5), a No. 2 through hole (15) is axially arranged on the sliding column (6), and the sliding column (6) is axially arranged at one end close to the tightening hole (4). A plurality of pressure blocks (7) are arranged in an annular manner at intervals in the direction of the sleeve (3). The pressure blocks (7) are connected to the slide column (6) through an elastic metal sheet (8). The pressure blocks (7) are located in the tightening hole (4). The thickness of the pressure blocks (7) in the radial direction of the tightening hole (4) gradually decreases from the end away from the slide column (6) to the end close to the slide column (6), and the outer surface of the pressure blocks (7) contacts the inner surface of the tightening hole (4). A limiting long hole (9) is provided on the bottom side of the sleeve (3). The limiting long hole (9) is arranged along the axial direction of the sleeve (3) and passes through the wall thickness of the sleeve (3); a limiting rod (10) is provided on one side of the slide column (6), and the limiting rod (10) passes through the limiting long hole (9); a double-headed cylinder (11) is provided on the bottom side of the support frame (1), and the double-headed cylinder (11) is parallel to the direction of the slide rail (2), and the two ends of the double-headed cylinder (11) are respectively connected to the limiting rods (10) of the clamping device at the two ends of the slide rail (2).

2. A cable tensioning device according to claim 1, characterized in that: A vertical baffle (13) is provided on the support frame (1) on the outer side opposite to the clamping device, a No. 3 through hole (16) is provided on the baffle (13), the No. 3 through hole (16) is coaxial with the No. 1 through hole (5), a spring (14) is provided between the baffle (13) and the end of the sleeve (3) of the clamping device, and both ends of the spring (14) are fixedly connected to the baffle (13) and the end of the sleeve (3).

3. A cable tensioning device according to claim 1, characterized in that: A rubber gasket (12) is provided on the inner side opposite to the pressing block (7).

4. A cable tensioning device according to claim 1, characterized in that: One end of the elastic metal sheet (8) is inserted into the sliding column (6), and the other end is inserted into the pressing block (7).

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