Electric power engineering cable tightener

Abstract

The utility model relates to the field of cable tightening, and discloses an electric power engineering cable tightener which comprises a take-up mechanism and a cable clamping mechanism, the take-up mechanism and the cable clamping mechanism are connected through a cable and a hook lock, the other end of the take-up mechanism is connected with a cable frame, and the take-up mechanism drives the cable clamping mechanism to move by tightening the cable so as to tighten a cable. The cable clamping mechanism is provided with a take-back auxiliary mechanism capable of enabling the cable clamping mechanism to be separated from the cable, the take-back auxiliary mechanism is connected with the pull rope, the pull rope is pulled to enable the take-back auxiliary mechanism to make contact with the cable so as to support the cable clamping mechanism, and the cable clamping mechanism is provided with an anti-falling piece with an anti-falling function. Compared with the prior art, the cable take-up device has the advantages that the take-up auxiliary mechanism is arranged, the idler wheel can make contact with the cable and support the upper clamping block by pulling the pull rope, the upper clamping block is separated from the cable, the lower clamping block naturally falls off to be separated from the cable under the action of gravity, resistance during take-up is greatly reduced, and take-up operation is simpler and more convenient.

Description

Technical Field

[0001] The utility model relates to the field of cable tightening, in particular to a cable tightening device for electric power engineering. Background Art

[0002] In cable installation, maintenance and other operations in power engineering projects, cable tensioners are key equipment for achieving cable tightening. Their ease of operation, work efficiency and safety directly affect the construction progress and operation safety.

[0003] The cable tensioners in the prior art have the following problems in practical applications:

[0004] Difficulty in retraction operation: When the cable is tightened, if the distance between the clamping device and the retracting device is far, directly pulling the clamping device will cause large friction between the clamping device and the cable, or the clamping device is still in a clamping state, which will lead to large retraction resistance, laborious operation, and even the need for additional tools to assist, increasing the difficulty of the operation.

[0005] Low work efficiency: Since it is impossible to accurately predict the pulling distance required to tighten the cable from loose to taut, it is often necessary to repeatedly place the wire clamp device multiple times during construction to gradually tighten the cable. This process is cumbersome and repetitive. Even if an extended tool (such as a tamping rod) is used to push the wire clamp device for one-time tightening, the distance between the wire clamp device and the wire retraction device is too far, resulting in troublesome subsequent retraction of the wire clamp device, and low overall work efficiency.

[0006] Therefore, there is an urgent need for a power engineering cable tensioner that can simplify the retraction operation and improve work efficiency to solve the above-mentioned problems existing in the prior art. Utility Model Content

[0007] The technical problem to be solved by the utility model is to overcome the above difficulties and provide a cable tensioner for electric power engineering.

[0008] A cable tensioner for an electric power project includes a wire taking-up mechanism and a wire clamping mechanism. The wire taking-up mechanism and the wire clamping mechanism are connected by a cable and a hook lock. The other end of the wire taking-up mechanism is connected to a cable rack. The wire taking-up mechanism drives the wire clamping mechanism to move by tightening the cable to tighten the cable. The wire clamping mechanism is provided with a retraction auxiliary mechanism that can separate the wire clamping mechanism from the cable. The retraction auxiliary mechanism is connected to a pull rope and the retraction auxiliary mechanism is brought into contact with the cable by pulling the pull rope to support the wire clamping mechanism. The wire clamping mechanism is provided with an anti-drop component with an anti-drop function.

[0009] As an improvement, the wire clamping mechanism includes an upper clamping block and a lower clamping block. The upper clamping block is rotatably connected to a clamping drive plate. The center of the clamping drive plate is rotatably connected to the lower clamping block and the bottom end is rotatably connected to a pull rod. The end of the pull rod is connected to a hook lock. The center of the pull rod is rotatably connected to a clamping auxiliary plate. The top of the clamping auxiliary plate is rotatably connected to the upper clamping block.

[0010] As an improvement, a through slot is symmetrically and obliquely arranged inside the upper clamping block, and the retraction auxiliary mechanism includes a slide rod sliding in the through slot, a support rod is provided at the bottom end of the slide rod, and a roller that can contact the cable is provided at the bottom end of the support rod.

[0011] As an improvement, the through slot consists of slot one and slot two, slot one is slidably connected to the slide rod, and slot two is slidably connected to the support rod, and slot one is smaller than slot two. The slide rod is covered with a spring located at the top of the support rod and the inner wall of slot one. The spring can drive the support rod to extend from slot two to make the roller contact the cable and apply pressure to support the upper clamp.

[0012] As an improvement, the top ends of the two sliding rods are fixed to top blocks. A snap ring is rotatably provided on the top block close to the take-up mechanism, and an arc-shaped block abutting the snap ring is provided on the top block on the other side. A top rod is provided on the snap ring, and the top rod is connected to the pull rope.

[0013] As an improvement, a slide groove is provided on the end face of the lower clamping block away from the clamping drive plate. The anti-drop part includes a slider that can move up and down and rotate in the slide groove. A limit rod is provided on the slider. A screw hole is provided on the upper clamping block. A bolt that docks with the screw hole is provided at the top of the limit rod.

[0014] As an improvement, a rope rack is provided on the take-up mechanism, a through-hole is provided on the rope rack, the pull rope passes through the through-hole and a knot is provided at the end, and the size of the knot is larger than the through-hole.

[0015] The beneficial effects of the present invention compared with the prior art are:

[0016] 1. By setting up a retraction auxiliary mechanism, the pull rope can be pulled to make the roller contact with the cable and support the upper clamping block, so that the upper clamping block is separated from the cable, and the lower clamping block naturally falls off the cable under the action of gravity, which greatly reduces the resistance during retraction and makes the retraction operation easier. In addition, the utility model does not need to place the wire clamping mechanism multiple times, and the wire clamping mechanism can be easily retracted with the help of the retraction auxiliary mechanism, reducing unnecessary operating steps, saving time and manpower, and improving overall work efficiency.

[0017] 3. The anti-drop component of the utility model can effectively limit the wire clamping mechanism and the cable, preventing the wire clamping mechanism from falling during installation, movement and tightening, thereby improving the safety of operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 The utility model is a schematic diagram of the overall structure of a cable tightener for electric power engineering.

[0019] Figure 2 The utility model is a schematic diagram of the overall structure of a cable tensioner for electric power engineering.

[0020] Figure 3The utility model is a schematic diagram of a retraction auxiliary mechanism of a cable tensioner for electric power engineering.

[0021] Figure 4 This is a schematic diagram of the clamping mechanism of a power engineering cable tensioner in this utility model. Figure 1 .

[0022] Figure 5 This is a schematic diagram of the clamping mechanism of a power engineering cable tensioner in this utility model. Figure 2 .

[0023] As shown in the figure: 1. Wire-reeling mechanism; 2. Wire-clamping mechanism; 3. Lower clamping block; 4. Upper clamping block; 5. Clamping drive plate; 6. Pull rod; 7. Clamping auxiliary plate; 8. Through slot; 9. Retraction auxiliary mechanism; 10. Slide rod; 11. Support rod; 12. Roller; 13. Spring; 14. Top block; 15. Arc block; 16. Snap ring; 17. Top rod; 18. Pull rope; 19. Anti-drop part; 20. Slide groove; 21. Slider; 22. Limit stop rod; 23. Screw hole; 24. Bolt; 25. Rope rack. DETAILED DESCRIPTION

[0024] The present invention will be described in further detail below with reference to the accompanying drawings.

[0025] Combined with attachment Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 As shown:

[0026] A cable tensioner for electric power engineering, comprising a take-up mechanism 1 and a clamping mechanism 2, wherein the take-up mechanism 1 and the clamping mechanism 2 are connected by a cable and a hook lock, and the other end of the take-up mechanism 1 is connected to a cable rack. The take-up mechanism 1 drives the clamping mechanism 2 to move by tightening the cable to tighten the cable. The clamping mechanism 2 is provided with a retraction auxiliary mechanism 9 capable of separating the clamping mechanism 2 from the cable. The retraction auxiliary mechanism 9 is connected to a pull rope 18, and the pull rope 18 is pulled to bring the retraction auxiliary mechanism 9 into contact with the cable to support the clamping mechanism 2. The clamping mechanism 2 is provided with an anti-dropping member 19 with an anti-dropping function.

[0027] The wire clamping mechanism 2 includes an upper clamping block 4 and a lower clamping block 3. The upper clamping block 4 is rotatably connected to a clamping drive plate 5. The center of the clamping drive plate 5 is rotatably connected to the lower clamping block 3 and the bottom end is rotatably connected to a pull rod 6. The end of the pull rod 6 is connected to a hook lock. The center of the pull rod 6 is rotatably connected to a clamping auxiliary plate 7. The top end of the clamping auxiliary plate 7 is rotatably connected to the upper clamping block 4.

[0028] The wire-reeling mechanism 1 of the present invention is a prior art mechanism, which generally includes a ratchet, a winding roller, a cable, a handle, etc. The specific operation is to operate the handle to drive the ratchet so that the winding roller can retract and release the cable. The specific details are not described in detail in the present invention.

[0029] The working principle of the present invention is as follows: when using the present invention to tighten the power engineering cable, first cancel the limit of the anti-drop part 19, then connect the wire-winding mechanism 1 and the wire-clamping mechanism 2 through the cable and the hook lock, put the connected wire-clamping mechanism 2 on the outside of the cable, reset the anti-drop part 19 to limit the wire-clamping mechanism 2 and the cable, and prevent the wire-clamping mechanism 2 from falling from the cable. Manually push the wire-clamping mechanism 2 to move to a certain distance on the cable, and then operate the wire-winding mechanism 1 to drive the wire-clamping mechanism 2 to move. The wire-clamping mechanism 2 can clamp the cable under the action of the cable, and the wire-clamping mechanism 2 can drive the cable to move after clamping the cable. At this time, the wire-clamping mechanism 2 drives the cable to tighten, but in the prior art, since it is impossible to predict the distance the cable needs to be pulled from loose to tight when placing the wire-clamping mechanism 2, it is generally necessary to repeatedly place the wire-clamping mechanism 2 to gradually increase the distance of the cable during implementation. The cable can be tightened at a distance of 100 km / h, or by using an extended tool such as a tamping rod to push the wire clamping mechanism 2 so that the wire clamping mechanism 2 is farther away from the wire take-up mechanism 1 than by pushing it by hand, so as to achieve one-time tightening of the cable. However, both of the above methods have problems. First, repeatedly placing the wire clamping mechanism 2 requires the staff to perform repetitive actions many times, making the tightening work cumbersome and inefficient due to unnecessary steps. Although repetitive actions can be avoided by lengthening the distance between the wire clamping mechanism 2 and the wire take-up mechanism 1, when the cable is tightened and the distance between the wire clamping mechanism 2 and the wire take-up mechanism 1 is still very far, the staff directly pulls the wire clamping mechanism 2 through the cable. Friction between the wire clamping mechanism 2 and the cable or the cable is still clamped increases the difficulty of retracting the wire clamping mechanism 2. In order to solve the above problems, the present invention provides a retraction auxiliary mechanism 9.

[0030] Combined with attachment Figure 1 , Attachment Figure 2 , Attachment Figure 3 , Attachment Figure 4 As shown:

[0031] A through slot 8 is symmetrically and obliquely provided inside the upper clamping block 4. The retraction auxiliary mechanism 9 includes a slide rod 10 that slides in the through slot 8. A support rod 11 is provided at the bottom end of the slide rod 10. A roller 12 that can contact the cable is provided at the bottom end of the support rod 11.

[0032] The through slot 8 consists of a slot 1 and a slot 2. The slot 1 is slidably connected to the slide bar 10, and the slot 2 is slidably connected to the support rod 11. The slot 1 is smaller than the slot 2. The slide bar 10 is covered with a spring 13 located at the top of the support rod 11 and the inner wall of the slot 1. The spring 13 can drive the support rod 11 to extend from the slot 2 so that the roller 12 contacts the cable and applies pressure to support the upper clamp 4.

[0033] The top ends of the two slide bars 10 are fixed to a top block 14. A snap ring 16 is rotatably provided on the top block 14 on the side close to the take-up mechanism 1. An arc-shaped block 15 is provided on the top block 14 on the other side to abut against the snap ring 16. A top rod 17 is provided on the snap ring 16, and the top rod 17 is connected to the pull rope 18.

[0034] The take-up mechanism 1 is provided with a rope rack 25 , which is provided with a through-hole. The pull rope 18 passes through the through-hole and a knot is provided at the end thereof. The size of the knot is larger than the through-hole.

[0035] The working principle of the retraction auxiliary mechanism 9 is as follows: when the distance between the clamping mechanism 2 and the winding mechanism 1 is far and the tightening work is completed and the clamping mechanism 2 needs to be retracted, since the clamping mechanism 2 is in a state of continuously clamping the cable during the tightening work process, the pull rope 18 is first pulled, and the pull rope 18 drives the clamping ring 16 to rotate through the top rod 17, so that the clamping ring 16 is separated from the arc block 15, and then the support rod 11 moves downward under the elastic action of the spring 13, and the support rod 11 drives the roller 12 to move so that the roller 12 contacts with the cable. At this time, the winding mechanism 1 is operated to relax the cable. In the prior art, the lower clamping block 3 will naturally fall down under the action of gravity and separate from the cable, and the upper clamping block 4 will still be separated from the cable under the action of gravity. When the cable is retracted, the upper clamping block 4 will be in contact with the cable, and the contact position is the same as the clamping position. If the wire clamping mechanism 2 is directly pulled back, friction will inevitably occur between the upper clamping block 4 and the cable, that is, the upper clamping block 4 will be subject to resistance from the cable when it is retracted and pulled. In the utility model, when the wire retraction mechanism 1 is operated to relax the cable, the lower clamping block 3 will naturally fall down under the action of gravity and separate from the cable, and the support rod 11 on the upper clamping block 4 will continue to move downward under the action of the spring 13, that is, the roller 12 moves downward relative to the upper clamping block 4. Since the roller 12 is always in contact with the cable, the roller 12 can now support the upper clamping block 4 until it is separated from the cable. During specific implementation, attention should be paid to the downward movement distance of the roller 12 to avoid the lower clamping block 3 from contacting the cable again.

[0036] Combined with attachment Figure 1 , Attachment Figure 2 , Attachment Figure 4 , Attachment Figure 5 As shown:

[0037] A slide groove 20 is provided on the end face of the lower clamping block 3 away from the clamping drive plate 5. The anti-drop part 19 includes a slider 21 that can move up and down and rotate in the slide groove 20. A limit rod 22 is provided on the slider 21. A screw hole 23 is provided on the upper clamping block 4. A bolt 24 is provided at the top of the limit rod 22 to connect with the screw hole 23.

[0038] When installing the wire clamping mechanism 2 , the bolt 24 is screwed out of the screw hole 23 , and the wire clamping mechanism 2 is put outside the cable, and then the bolt 24 is screwed into the screw hole 23 .

[0039] When the present power engineering cable tensioner is implemented, the limit of the anti-dropping part 19 is first canceled, that is, the bolt 24 at the top of the limit stop rod 22 is screwed to disengage it from the screw hole 23 on the upper clamping block 4, and then the clamping mechanism 2 is sleeved on the outside of the cable, and the bolt 24 is screwed into the screw hole 23 to reset the anti-dropping part 19 to limit the clamping mechanism 2 and the cable to prevent the clamping mechanism 2 from falling from the cable. Then the clamping mechanism 2 is manually pushed to move to a suitable distance on the cable, and the clamping mechanism 2 is driven to move by operating the take-up mechanism 1. During the movement, the clamping drive plate 5 is pulled from a vertical state to an inclined state by the cable. The upper clamping block 4 is initially in contact with the cable. At this time, the clamping drive plate 5 can drive the lower clamping block 3 to move up to the lower clamping block 3 to contact the cable. At this time, the upper clamping block 4 and the lower clamping block 3 can clamp the cable. After clamping, the clamping mechanism 2 drives the cable to tighten. When the line tightening work is completed and the clamping mechanism 2 needs to be retracted, the pull rope 18 connected to the top rod 17 is pulled, and the pull rope 18 drives the clasp 16 to rotate, so that the clasp 16 is separated from the arc block 15. At this time, the spring 13 outside the slide bar 10 drives the support rod 11 to extend from the second groove, propping up the upper clamping block 4. Then, the take-up mechanism 1 is operated to loosen the cable. The roller 12 at the bottom end of the support rod 11 contacts and presses the cable. At the same time, the lower clamping block 3 naturally falls down and separates from the cable under the action of gravity, and the clamping mechanism 2 can be easily retracted. In addition, the perforation of the rope frame 25 on the take-up mechanism 1 limits the pull rope 18, and the knot at the end of the pull rope 18 can prevent the pull rope 18 from falling out of the perforation.

[0040] The above description of the present invention and its embodiments is non-limiting. The drawings show only one embodiment of the present invention, and the actual structure is not limited thereto. In short, if a person skilled in the art is inspired by the above, and does not deviate from the purpose of the present invention, without creatively designing a structure and embodiment similar to the technical solution, they shall fall within the scope of protection of the present invention.

Claims

1. A cable tensioner for electric power engineering, comprising a wire-taking mechanism (1) and a wire-clamping mechanism (2), wherein the wire-taking mechanism (1) and the wire-clamping mechanism (2) are connected by a cable and a hook lock, and the other end of the wire-taking mechanism (1) is connected to a cable rack, characterized in that: The wire-retracting mechanism (1) drives the wire-clamping mechanism (2) to move by tightening the cable to achieve the tightening of the cable. The wire-clamping mechanism (2) is provided with a retraction auxiliary mechanism (9) capable of separating the wire-clamping mechanism (2) from the cable. The retraction auxiliary mechanism (9) is connected to a pull rope (18) and the pull rope (18) is pulled to make the retraction auxiliary mechanism (9) contact with the cable to support the wire-clamping mechanism (2). The wire-clamping mechanism (2) is provided with an anti-drop component (19) with an anti-drop function.

2. The electric power engineering cable tensioner according to claim 1, characterized in that: The line clamping mechanism (2) includes an upper clamping block (4) and a lower clamping block (3), wherein the upper clamping block (4) is rotatably connected to a clamping drive plate (5), the center of the clamping drive plate (5) is rotatably connected to the lower clamping block (3) and the bottom end is rotatably connected to a pull rod (6), the end of the pull rod (6) is connected to a hook lock, the center of the pull rod (6) is rotatably connected to a clamping auxiliary plate (7), and the top end of the clamping auxiliary plate (7) is rotatably connected to the upper clamping block (4).

3. The electric power engineering cable tensioner according to claim 2, characterized in that: A through slot (8) is symmetrically and obliquely arranged inside the upper clamping block (4), and the retraction auxiliary mechanism (9) includes a slide rod (10) sliding in the through slot (8), a support rod (11) is provided at the bottom end of the slide rod (10), and a roller (12) that can contact the cable is provided at the bottom end of the support rod (11).

4. The electric power engineering cable tensioner according to claim 3, characterized in that: The through slot (8) is composed of slot one and slot two. Slot one is slidably connected to the slide bar (10), and slot two is slidably connected to the support bar (11). The size of slot one is smaller than that of slot two. The slide bar (10) is provided with a spring (13) located at the top of the support bar (11) and the inner wall of slot one. The spring (13) can drive the support bar (11) to extend from the inside of slot two so that the roller (12) contacts the cable and applies pressure to support the upper clamping block (4).

5. The electric power engineering cable tensioner according to claim 3, characterized in that: The top ends of the two slide bars (10) are fixedly connected to a top block (14). A snap ring (16) is rotatably provided on the top block (14) on one side close to the take-up mechanism (1). An arc-shaped block (15) abutting against the snap ring (16) is provided on the top block (14) on the other side. A top rod (17) is provided on the snap ring (16). The top rod (17) is connected to a pull rope (18).

6. The electric power engineering cable tensioner according to claim 2, characterized in that: A slide groove (20) is provided on the end surface of the lower clamping block (3) away from the clamping drive plate (5), and the anti-drop component (19) includes a slider (21) that moves up and down and can rotate in the slide groove (20), and a limit stop rod (22) is provided on the slider (21). A screw hole (23) is provided on the upper clamping block (4), and a bolt (24) is provided at the top end of the limit stop rod (22) and is connected to the screw hole (23).

7. The electric power engineering cable tensioner according to claim 1, characterized in that: A rope rack (25) is provided on the take-up mechanism (1), and a through-hole is provided on the rope rack (25). The pull rope (18) passes through the through-hole and a knot is provided at the end thereof. The size of the knot is larger than the through-hole.

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