Parallel bunched cable strain clamp

Abstract

The invention discloses a strain clamp for parallel bunched cables, and aims to solve the problem that in the prior art, due to the fact that the number of parts of a strain clamp is large, assembly of the strain clamp is very troublesome. And when the strain clamp is assembled in the air, the risk that parts fall off easily occurs, and potential safety hazards exist. According to the technical scheme, the clamping device comprises two parallel clamping plates, the two sides of each clamping plate are each provided with two connecting rods, the two connecting rods are arranged in parallel, the two ends of each connecting rod are rotationally connected with the corresponding clamping plate, and the two sides of each clamping plate are each provided with a clamping mechanism; the clamping mechanism is arranged between the two connecting rods on the same side of the clamping plate. According to the strain clamp, the strain clamp of the parallel bunched cable is arranged to be of an integral structure, and the strain clamp does not need to be assembled in advance before being used, so that the strain clamp is very convenient to use; and the first clamping plate and the second clamping plate are always kept parallel, so that the stress is more uniform when the parallel bunched cable is clamped.

Description

Technical Field

[0001] The invention relates to the technical field of bundled cable power hardware, and more specifically, to a parallel bundled cable tension clamp. Background Art

[0002] Insulated cables used in power transmission and distribution lines are increasingly being parallel-bundled insulated cables. When general tension clamps are used to fix bundled cables on electric poles, it is necessary to separate the cores of each wire and then fix them separately. This operation is complex, requires high technical requirements, and is prone to damage the wires.

[0003] Chinese patent announcement number CN102136708B, announcement date January 25, 2011, the name of the invention is parallel clustered insulated cable tension clamp, the application discloses a parallel clustered insulated cable tension clamp, which is provided with a pair of wedge cores to clamp the parallel technology type insulated cable, and then the two half shells are connected by a dovetail groove structure to form a main body, and finally the wedge core is placed in the wedge-shaped cavity of the main body to complete the installation. Although it does not need to separate the cores of each wire to achieve the fixation of the parallel clustered cables, but when it is used, due to the large number of parts, the installation steps are very complicated, which reduces the efficiency of the installation. At the same time, when assembling the tension clamp at high altitude, there is a risk of parts falling, which poses a safety hazard. Summary of the invention

[0004] The present invention overcomes the problem in the prior art that although the tension clamp does not need to separate the parallel bundled cables into independent cables, the parallel bundled cables can be fixed and installed. However, before installation, due to the large number of parts of the tension clamp, the assembly of the tension clamp is very troublesome; and when assembling the tension clamp at high altitude, there is a risk of parts falling, which poses a safety hazard. A parallel bundled cable tension clamp is provided, which adopts an integrated structural design, does not need to be assembled before use, and has the characteristics of easy installation; at the same time, by adopting the setting of double parallel clamps, the two clamps remain parallel during the movement, so that the parallel bundled cables can be better clamped. The process does not require the parallel bundled cables to be separated and installed separately, but only needs to be fixed as a whole, and each cable of the parallel bundled cable can be evenly stressed, thereby improving the reliability of line operation.

[0005] In order to solve the above technical problems, the present invention adopts the following technical solutions: a parallel bundled cable tension clamp, comprising: two parallel clamps, two connecting rods are arranged on both sides of the two clamps, the two connecting rods are arranged in parallel, the two ends of the connecting rods are respectively rotatably connected to the two clamps, and clamping mechanisms that can clamp the clamps to each other are arranged on both sides of the two clamps, and the clamping mechanism is arranged between the two connecting rods on the same side of the clamps.

[0006] In the present invention, by providing a first clamping plate and a second clamping plate, and a connecting rod connecting the first clamping plate and the second clamping plate, the parallel bundled cable tension clamp forms an integral structure, which does not require pre-assembly before use, is very convenient to use, and effectively reduces the safety risks caused by the falling of parts when assembling the parallel bundled cable tension clamp; at the same time, by using the first clamping plate, the second clamping plate, and two parallel connecting rods provided on both sides of the first clamping plate and the second clamping plate, when clamping the parallel bundled cables, the first clamping plate and the second clamping plate are always kept parallel, so that the first clamping plate and the second clamping plate can be well clamped and completely bound on the surface of the parallel bundled cables, so that each cable of the parallel bundled cables is subjected to very uniform force, thereby preventing the cables from being damaged due to excessive local clamping force of the bundled cables.

[0007] Preferably, the clamping mechanism includes a side ear and a clamping rod, the side ear is fixedly arranged on one of the clamping plates, one end of the clamping rod is rotatably arranged on the other clamping plate, the side ear is provided with a side ear groove, the clamping rod is inserted into the side ear groove, and the clamping rod is threadedly connected with a clamping nut.

[0008] By rotating the clamping nut, the clamping nut is abutted against the side ear, so that the first clamping plate and the second clamping plate can approach each other, so that the first clamping plate and the second clamping plate clamp the parallel bundled cables.

[0009] Preferably, the side walls of the two clamping plates are provided with outwardly protruding convex shafts, and both ends of the connecting rod are provided with connecting rod holes, which match the connecting rod holes with the convex shafts.

[0010] The connecting rod hole cooperates with the convex shaft to realize the function that the two ends of the connecting rod are rotatably connected with the first clamping plate and the second clamping plate respectively.

[0011] Preferably, the clamping plate comprises a shell and an insulating buffer pad arranged in the shell, and a side wall of the insulating buffer pad away from the shell is provided with a plurality of buffer grooves along its length direction.

[0012] The buffer slot can cooperate with several individual wires on the parallel bundled cables, so that each cable of the parallel bundled cables can be completely bound, so that the surface of each cable of the parallel bundled cables is evenly stressed, and the clamping effect of the parallel bundled cables is better.

[0013] Preferably, the side wall of the buffer groove is provided with a plurality of protrusions for increasing friction.

[0014] The protrusions can increase the friction with the parallel bundled cables.

[0015] Preferably, the thickness of the insulating buffer pad gradually increases from the middle portion toward both ends in the length direction.

[0016] Since the insulating buffer pad is made of elastic material, the insulating buffer pad will be deformed during the clamping process of the first clamping plate and the second clamping plate. Therefore, by setting the thickness of the buffer pad to gradually increase from the middle part to the two ends in the length direction, the deformed insulating buffer pad can achieve a better clamping effect.

[0017] Preferably, a telescopic rod assembly is further included, wherein a first universal joint and a second universal joint are respectively provided at both ends of the telescopic rod assembly, the first universal joint is connected to one of the clamping plates, and the second universal joint is connected to a fixing assembly.

[0018] By setting up a telescopic rod assembly, the length of the telescopic rod assembly can be adjusted to meet different installation requirements; at the same time, by setting up a first universal joint and a second universal joint at both ends of the telescopic rod assembly, the parallel bundled cable tension clamp can be installed more conveniently.

[0019] Preferably, the telescopic rod assembly comprises a connecting rod and two sleeve rods, a rotating block is provided in the middle of the connecting rod, threads with opposite rotation directions are provided at both ends of the rotating block, and the two sleeve rods are respectively threadedly connected to the two ends of the connecting rod.

[0020] Since the threads at both ends of the connecting rod rotate in opposite directions, by rotating the rotating block, the connecting rod rotates in the first set of rods and the second set of rods, the length of the telescopic rod assembly can be shortened or extended at the same time, making it very convenient to adjust the length of the telescopic rod.

[0021] Preferably, the two parallel clamps are the first clamp and the second clamp, the telescopic rod assembly is connected to the second clamp, and when the two clamps are clamped together, the connecting end of the connecting rod and the first clamp rotates in a direction away from the telescopic rod assembly.

[0022] When the two clamps are clamped together, the connecting rod rotates in the direction away from the telescopic rod assembly, so that when the first clamp is subjected to the tension F of the parallel bundled cables, the first clamp moves relative to the second clamp, and the first clamp can move in the direction close to the second clamp, so that a clamping force can be provided to the parallel bundled cables, so that the parallel bundled cables are clamped tighter.

[0023] Preferably, the fixing assembly includes two fixing plates rotatably arranged on the second universal joint, the two fixing plates are provided with pin holes, the pin shaft passes through the two pin holes, a limiting ring is provided at one end of the pin shaft, and a through hole penetrating along its radial direction is provided at the other end of the pin shaft, and a limiting pin is provided in the through hole.

[0024] Through the cooperation of the fixing plate, the pin shaft and the limiting pin, it can be connected to the bracket very conveniently.

[0025] Compared with the prior art, the present invention has the following beneficial effects: (1) The parallel bundled cable tension clamp is set as an integral structure. When installing, it only needs to tighten the nut. No pre-assembly is required before use, which is very convenient to use; (2) Since no preparatory installation is required, the safety risk caused by the falling of parts during the assembly of parallel bundled cable tension clamps is effectively reduced; (3) When the parallel bundled cables are clamped, the first clamping plate and the second clamping plate are always kept parallel, so that the first clamping plate and the second clamping plate can clamp the parallel bundled cables well, so that each cable of the parallel bundled cables is subjected to very uniform force, thereby preventing the cables from being damaged due to excessive local clamping force of the bundled cables; (4) There is no need to separate all the parallel bundled cables and fix them separately, which has the advantages of convenient fixation, more uniform force, and the parallel bundled cables will not be torn due to separation. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] Figure 1 It is a three-dimensional structural diagram of the present invention; Figure 2 It is a structural exploded diagram of the present invention; Figure 3 are a top view and a cross-sectional view of the insulating buffer pad of the present invention; Figure 4 is a top view of the present invention; In the figure: 1. The first splint, 2. The second splint, 3. Connecting rod, 31. Connecting rod hole, 32. Cam shaft, 4. Clamping mechanism, 41. Side ear, 411. Side ear groove, 42. Clamping rod, 421. Rotating head, 43. Clamping nut; 5. telescopic rod assembly, 51. connecting rod, 511. rotating block, 52. first set of rods, 53. second set of rods; 6. first universal joint, 61. vertical rotation axis, 62. transition block, 63. horizontal rotation axis; 7. Second universal joint; 8. fixing assembly, 81. fixing plate, 811. pin hole, 82. pin shaft, 821. limiting ring, 822. through hole, 83. limiting pin; 91. housing, 92. buffer pad, 921. buffer groove, 922. protrusion, 93. through hole, 941. bolt, 942. nut. DETAILED DESCRIPTION

[0027] The technical solution of the present invention is further described in detail below through specific embodiments and in conjunction with the accompanying drawings: Example 1: Reference Figures 1 to 4 As shown, a parallel bundled cable tension clamp comprises: two parallel clamps, the two clamps are respectively a first clamp 1 and a second clamp 2, two connecting rods 3 are respectively arranged on both sides of the first clamp 1 and the second clamp, the two connecting rods are arranged parallel to each other, one end of the connecting rod is rotatably connected to the first clamp, and the other end of the connecting rod is rotatably connected to the second clamp; the side walls of the first clamp and the second clamp are respectively provided with outwardly protruding convex shafts 32, and both ends of the connecting rod are respectively provided with connecting rod holes 31, the connecting rod holes cooperate with the convex shafts to realize the function of the two ends of the connecting rod being rotatably connected to the first clamp and the second clamp.

[0028] Through the cooperation of the two connecting rods and the first clamping plate and the second clamping plate, a parallelogram structure can be formed, so that the first clamping plate and the second clamping plate always remain parallel.

[0029] The first clamping plate and the second clamping plate are both provided with a clamping mechanism 4, which can make the first clamping plate and the second clamping plate approach each other to clamp the parallel bundled cables. The clamping mechanism is arranged between two connecting rods on the same side of the first clamping plate and the second clamping plate.

[0030] The specific structure of the clamping mechanism includes a side ear 41 and a clamping rod 42. The side ear is fixedly arranged on the side of the first clamping plate. One end of the clamping rod is rotatably arranged on the side of the second clamping plate through a rotating head 421. The side ear is provided with a side ear slot 411. The clamping rod is inserted into the side ear slot. The clamping rod is threadedly connected with a clamping nut 43. By rotating the clamping nut, the clamping nut abuts against the side ear, so that the first clamping plate and the second clamping plate can approach each other, so that the first clamping plate and the second clamping plate clamp the parallel bundled cables.

[0031] The second clamping plate is connected to a telescopic rod assembly 5, and the two ends of the telescopic rod assembly are respectively provided with a first universal joint 6 and a second universal joint 7, the first universal joint is fixedly connected to the second clamping plate, and the second universal joint is connected to a fixed assembly 8. The first universal joint includes a vertical rotation shaft 61, a transition block 62 is rotationally connected to the vertical rotation shaft, and a horizontal rotation shaft 63 is rotationally connected to the end of the transition block away from the vertical rotation shaft, the vertical rotation shaft of the first universal joint is rotationally connected to the second clamping plate, and the horizontal rotation shaft of the first universal joint is rotationally connected to the telescopic rod assembly; through the cooperation of the horizontal rotation shaft 63 and the vertical rotation shaft 61, the first universal joint can be rotated at any angle; the second universal joint has the same structure as the first universal joint, and no further details are given here.

[0032] The telescopic rod assembly 5 includes a connecting rod 51 and two sleeve rods, and the sleeve rod is provided with a sleeve hole. The two sleeve rods are respectively a first sleeve rod 52 and a second sleeve rod 53. The end of the first sleeve rod away from the connecting rod is rotatably connected to the horizontal rotation axis of the first universal joint, and the end of the second sleeve rod away from the connecting rod is rotatably connected to the horizontal rotation axis of the second universal joint. A rotating block 511 is provided in the middle position of the connecting rod. The rotating block is in the shape of a hexagonal prism, and the hexagonal prism facilitates the rotation of the rotating block. The connecting rod is provided with threads with opposite rotation directions at both ends of the rotating block. The first sleeve rod and the second sleeve rod are both connected to the two ends of the connecting rod through threads with the sleeve hole. Since the threads at the two ends of the connecting rod rotate in opposite directions, by rotating the rotating block, the connecting rod rotates in the first sleeve rod and the second sleeve rod, and the length of the telescopic rod assembly can be shortened or extended at the same time.

[0033] The fixing assembly 8 includes two fixing plates 81 rotatably arranged on the vertical rotating shaft of the second universal joint 7, the two fixing plates are provided with pin holes 811, the pin shaft 82 passes through the two pin holes, one end of the pin shaft is provided with a limit ring 821, the other end of the pin shaft is provided with a through hole 822 penetrating along its radial direction, and a limit pin 83 is arranged in the through hole. Through the cooperation of the fixing plates, the pin shaft and the limit pin, it can be very convenient to connect with other brackets (wall brackets, power crossarms).

[0034] In addition, if Figure 4 As shown, when the two clamping plates are clamped together, the connecting end of the connecting rod and the first clamping plate rotates in a direction away from the telescopic rod assembly.

[0035] The working principle of this embodiment is as follows: first, the parallel bundled cable tension clamp and the bracket are fixedly connected through the cooperation of the pin shaft and the limit pin, so that the first clamp and the second clamp are suspended in the air; then, the clamping nut is rotated so that the clamping nut is located at the end away from the second clamp, so that the first clamp and the second clamp are separated from each other, and a clamping opening is formed between the first clamp and the second clamp; then, the clamp is passed through the clamping opening between the first clamp and the second clamp; then, the clamping nut is rotated so that the first clamp and the second clamp are close to each other, so that the first clamp and the second clamp clamp the parallel bundled cables; then, the rotating block is rotated to adjust the length of the telescopic rod assembly, so that the parallel bundled cable tension clamp is subjected to a certain tension.

[0036] In this embodiment, by providing a first clamping plate and a second clamping plate, and a connecting rod connecting the first clamping plate and the second clamping plate, the parallel bundled cable tension clamp forms an integral structure, which does not require prior assembly before use, and effectively reduces the safety risks caused by the falling of parts when assembling the parallel bundled cable tension clamp; at the same time, by using the first clamping plate, the second clamping plate, and two parallel connecting rods provided on both sides of the first clamping plate and the second clamping plate, when clamping the parallel bundled cables, the first clamping plate and the second clamping plate always remain parallel, so that the first clamping plate and the second clamping plate can clamp the parallel bundled cables well, so that each cable of the parallel bundled cables is subjected to very uniform force, thereby preventing the cables from being damaged due to excessive local clamping force of the bundled cables. In addition, if Figure 4 As shown, when the two clamps are clamped together, the connecting rod rotates in the direction away from the telescopic rod assembly, so that when the first clamp is subjected to the tension F of the parallel bundled cables, the first clamp moves relative to the second clamp, and the first clamp can move in the direction close to the second clamp, so that a clamping force can be provided to the parallel bundled cables, so that the parallel bundled cables are clamped tighter.

[0037] Example 2: Reference Figures 1 to 4 As shown, the structure of this embodiment is similar to that of embodiment 1, except that the clamping plate includes a shell 91 and an insulating buffer pad 92 disposed in the shell, and a side wall of the insulating buffer pad away from the shell is provided with a plurality of buffer grooves 921 along its length. In this embodiment, the insulating buffer pad is made of rubber material, and four buffer grooves are provided.

[0038] A plurality of spherical protrusions 922 for increasing friction are provided on the side wall of the buffer groove, so as to increase the friction with the parallel bundled cables; and the thickness of the buffer pad gradually increases from the middle part to the two ends in the length direction (such as Figure 3 As shown), since the insulating buffer pad is made of an elastic material, the insulating buffer pad will be deformed during the clamping process of the first clamping plate and the second clamping plate. Therefore, by setting the thickness of the buffer pad to gradually increase from the middle part to the two ends in the length direction, the deformed insulating buffer pad can achieve a better clamping effect.

[0039] In this embodiment, by providing an insulating buffer pad, the parallel bundled cables can cooperate with the buffer groove, so that a better clamping effect can be achieved for the parallel bundled cables.

[0040] Example 3: This example is similar in structure to Example 1 or Example 2, except that a plurality of through holes 93 are provided on the first splint and the second splint. In this example, nine through holes are provided, and the nine through holes are evenly distributed on the first splint and the second splint. Bolts 941 pass through the through holes and are connected to nuts 942, so that the first splint and the second splint can be better fixed, so that the first splint and the second splint can maintain the clamping force.

[0041] The above-described embodiments are only preferred solutions of the present invention and are not intended to limit the present invention in any form. Other variations and modifications are possible without exceeding the technical solutions described in the claims.

Claims

1. A parallel bundled cable tension clamp, characterized in that: include: Two parallel splints are provided, and two connecting rods are provided on both sides of the two splints. The two connecting rods are provided in parallel, and the two ends of the connecting rods are rotatably connected to the two splints respectively. Both sides of the two splints are provided with clamping mechanisms that can clamp the splints to each other, and the clamping mechanism is provided between the two connecting rods on the same side of the splints.

2. The parallel bundled cable tension clamp according to claim 1 is characterized in that: The clamping mechanism includes a side ear and a clamping rod. The side ear is fixedly arranged on one of the clamping plates. One end of the clamping rod is rotatably arranged on the other clamping plate. The side ear is provided with a side ear groove. The clamping rod is inserted into the side ear groove. A clamping nut is threadedly connected to the clamping rod.

3. The parallel bundled cable tension clamp according to claim 1 is characterized in that: The side walls of the two clamping plates are both provided with convex shafts protruding outwards, and connecting rod holes are both provided at both ends of the connecting rod, and the connecting rod holes are matched with the convex shafts.

4. The parallel bundled cable tension clamp according to any one of claims 1 to 3, characterized in that: The clamping plate comprises an outer shell and an insulating buffer pad arranged in the outer shell. A side wall of the insulating buffer pad away from the outer shell is provided with a plurality of buffer grooves along its length direction.

5. The parallel bundled cable tension clamp according to claim 4 is characterized in that: The side wall of the buffer groove is provided with a plurality of protrusions for increasing the friction force.

6. The parallel bundled cable tension clamp according to claim 4 is characterized in that: The thickness of the insulating buffer pad gradually increases from the middle portion toward both ends in the length direction.

7. The parallel bundled cable tension clamp according to any one of claims 1 to 3, characterized in that: It also includes a telescopic rod assembly, wherein both ends of the telescopic rod assembly are respectively provided with a first universal joint and a second universal joint, the first universal joint is connected to one of the clamping plates, and the second universal joint is connected to a fixing assembly.

8. The parallel bundled cable tension clamp according to claim 7 is characterized in that: The telescopic rod assembly comprises a connecting rod and two sleeve rods. A rotating block is arranged in the middle of the connecting rod. Both ends of the rotating block are provided with threads with opposite rotation directions. The two sleeve rods are respectively threadedly connected to both ends of the connecting rod.

9. The parallel bundled cable tension clamp according to claim 7, characterized in that: The two parallel clamping plates are respectively the first clamping plate and the second clamping plate, the telescopic rod assembly is connected to the second clamping plate, and when the two clamping plates are clamped together, the connecting end of the connecting rod and the first clamping plate rotates in a direction away from the telescopic rod assembly.

10. The parallel bundled cable tension clamp according to claim 7, characterized in that: The fixing assembly includes two fixing plates rotatably arranged on the second universal joint, the two fixing plates are provided with pin holes, the pin shaft passes through the two pin holes, a limiting ring is provided at one end of the pin shaft, and a through hole penetrating along its radial direction is provided at the other end of the pin shaft, and a limiting pin is provided in the through hole.

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