CN202550413U - Parallel bunched cable tightener - Google Patents

Abstract

The utility model relates to a wire tensioner for parallel bundled cables. The existing method of installing bundled cables has the problems of uneven stress on the cables and high scrap rate. The utility model comprises a wire tightening device and a wire clamping device. The wire tightening device and the wire clamping device are respectively connected to pulleys on both sides of a connecting piece through a soft cable. The wire clamping devices are two groups, and are respectively connected to The two ends of the corresponding first flexible cable shorten the distance between the bundled cable and the installation station by controlling the tightening device to realize cable installation; in the process of pulling the bundled cable, use the first flexible cable connected between the clamping devices Sliding action on the corresponding pulleys to achieve balanced force between the two sets of clamping devices, to ensure that the wires at both ends of the bundled cable are balanced in force and to realize the state of "returning bundled" of the bundled cables, which not only ensures the power transmission quality of the cables after installation, but also Reduce the scrap rate of cables due to uneven stress and reduce maintenance costs.

Description

A parallel bundled cable tensioner

technical field

The utility model relates to a power system maintenance equipment, in particular to a parallel bundled cable tensioner.

Background technique

In the existing power equipment, parallel bundled cables have high safety and transmission reliability, and are widely used in rural electrification transformation. Commonly used bundled cables are generally composed of 4 wires, and they are required to be in a "returned" shape when they are in working condition. Square bundle” state, so that the four interconnected wires are arranged in a square shape, which not only reduces the influence on the dielectric constant, but also improves the voltage quality and the tensile capacity. During installation, the operator tightens the parallel bundled cables through the single bayonet tensioner, and fixes the cables at the designated station through the tension clamp. This process has the following defects: because the single bayonet tensioner can only When pulling a single cable, when the cable is tightened, the overall adhesion will be destroyed due to excessive force on the single wire, and the stress on each wire will be uneven, resulting in the phenomenon of cable loosening, and the bundled cable itself has The torsional force cannot be restored to the state of "returning to the cluster", which greatly affects the quality of power transmission, and it is easy to cause the cable to be twisted and deformed when the cable is released and tightened, or even scrapped, and the installation and maintenance costs are high.

Utility model content

In order to solve the deficiencies of the prior art, the utility model provides a wire tightener that can make the parallel bundled cables evenly stressed and effectively avoid the phenomenon of loose bundles and twists, and further provides a kind of parallel bundled cables in the state of use. The tensioner in the "square bundle" state.

The utility model is realized through the following methods: a parallel bundled cable tightener, including a tightening device and a clamping device, which is characterized in that the tightening device and the clamping device are respectively connected to a connecting piece through a flexible cable On both sides of the pulleys, there are two sets of clamping devices, which are respectively connected to the corresponding two ends of the first soft rope. In this scheme, one side of the tensioner is connected to the fixed object, and the two sets of clamping devices on one side are respectively clamped on the wires on both sides of the bundled cable, and the bundled cable and the installation station are shortened by controlling the tightening device. In the process of pulling the bundled cables, the first soft rope connected between the clamping devices is used to slide on the corresponding pulley to realize the balanced force between the two sets of clamping devices, ensuring that the bundled cables are both The force on the end wires is balanced and the bundled cables are in a "returned bundle" state, which not only ensures the quality of power transmission after the cables are installed, but also reduces the scrapping rate of cables due to uneven force and reduces maintenance costs.

Preferably, the connecting piece includes two connecting units, the connecting units are fastened to each other through a hook provided at one end, and the pulley is provided at the other end of the connecting unit. In this solution, the connecting units are movably connected to each other through a hook at one end. When in use, the disassembled thread tensioning device and thread tensioning device can be connected to the object respectively, and then the thread tensioning device and thread tensioning device can be connected through the hook , easy to use and operate, due to the flexible connection between the hooks, the force direction of the fixed objects at both ends of the tensioner and the bundled cables will not be restricted by the connection mode of the tensioner and the clamping device, ensuring that the bundled cables are evenly stressed And it is in the state of "returning party cluster".

As a preference, one end of the tightening device is provided with a fixed hook, and the other end is provided with a rotatable winch wheel, and is connected with the pulley on one side of the connector through a second flexible cable, and one end of the second flexible cable is fixed on the On the wire tightening device, the other end walks around the corresponding pulley and is fixedly connected to the working edge of the winch wheel. In this solution, the wire tightening device is connected to the fixed object through a fixed hook to ensure that the wire tightening device is stably supported when pulling the bundled cables; The distance between the connectors can be adjusted, and then the bundled cables are pulled to the installation station; the flexible connection method of the fixed hook is used to ensure that the tensioner is always in the same direction of force as the bundled cables when pulling, so as to ensure that the wires on both sides of the bundled cables The force is uniform, and the "returning and clustering" is successfully realized.

Preferably, the winch is provided with a rod-shaped handle. In this solution, the winch wheel is rotated by turning the handle, and the leverage principle is used to reduce the labor intensity of the operator and improve the accuracy of the tensioner's pulling work.

Preferably, a rotatable limiting piece is provided at the opening of the hook and the fixing hook. In this solution, the limiting piece plays a role in preventing the objects in the hook and the fixed hook from falling off, so as to ensure the safe use of the wire tensioner.

Preferably, the two sets of thread clamping devices both include a bottom splint and a movable splint that are interlocked with each other, and have a mirror image symmetrical structure. In this scheme, the clamping device clamps the bundled cables through the positional relationship between the bottom splint and the moving splint, and the two sets of stringing devices are mirror images of each other, so that the clamping working surfaces of the two sets of clamping devices are mirror images , it is convenient for the two clamping working surfaces to attach and respectively clamp the wires on both sides of the bundled cables, which not only prevents the two sets of clamping devices from interfering with each other when holding the wires, but also ensures that the pulling force on the wires on both sides of the bundled cables is even.

Preferably, the movable splint includes two clamp bars whose ends are hinged, one end of the movable splint is rotatably connected to one end of the bottom splint, and the other end of the movable splint is slidably connected to a In the upper groove bar, the opening and closing state of the movable splint and the bottom splint is realized by controlling the position of the sliding end of the dynamic splint in the groove bar. One end of the movable splint is rotatably connected with the bottom splint, and the other end of the movable splint slides in the groove. The angle between the two clamps changes with the position of the sliding end of the movable splint in the groove. When the sliding end of the movable splint is located near the bottom of the groove At one end of the center of the splint, the angle between the clamp bars is small, resulting in a large gap between the clamp bar and the bottom splint. At this time, the cable can be smoothly put into the clamping device; when the sliding end of the movable splint is located near the bottom splint. At the end, the angle between the clamping strips is relatively large, resulting in a smaller gap between the clamping strips and the bottom splint, which can smoothly clamp the wires between the clamping strips and the bottom splint.

Preferably, the clamping bar is provided with a clamping block matching the bottom clamping plate. When the movable splint moves, the bottom splint matches and sticks to the clamping block to realize the clamping of the wire.

Beneficial effects of the utility model: through a pair of clamping devices connected with flexible cables, respectively clamp the wires at both ends of the bundled cables, so that the two sets of clamping devices are balanced in force, ensuring that the wires at both ends of the bundled cables are stressed and realize the bundling The cables are in the state of "returning and clustering", which not only ensures the quality of power transmission after the cables are installed, but also reduces the scrap rate of waste products caused by uneven force and distortion of the cables, and reduces maintenance costs.

Description of drawings

Fig. 1 is a schematic diagram of the mechanism of the utility model;

Figure 2 is a schematic diagram of the top view structure when the wire clamping device with mirror image symmetry clamps the wire;

Figure 3 is a schematic structural diagram of the open state of the moving splint and the bottom splint of the clamping device;

Figure 4 is a schematic structural diagram of the clamping state of the moving splint and the bottom splint of the thread clamping device;

Figure 5 is a schematic diagram of the connection unit structure;

In the figure: 1. Thread tightening device, 2. Thread clamping device, 3. Pulley, 4. First soft rope, 5. Connector, 6. Connecting unit, 7. Hook, 8. Fixed hook, 9. Winch wheel, 10, the second soft rope, 11, handle, 12, limit plate, 13, bottom splint, 14, moving splint, 15, clip bar, 16, groove bar, 17, clamping block.

Detailed ways

The substantive features of the present utility model will be further described below in conjunction with the accompanying drawings and specific embodiments.

As shown in Figure 1, a parallel bundled cable tightener includes a tightening device 1 and a clamping device 2, and is characterized in that the tightening device 1 and the clamping device 2 are respectively connected in a On the pulleys 3 on both sides of the connector 5, the clamping devices 2 are in two groups, and are respectively connected to the two ends of the corresponding first rope 4; the connector 5 includes two connecting units 6, the connecting Units 6 are fastened to each other by a hook 7 arranged at one end thereof, and the other end of the connecting unit 6 is provided with the pulley 3 (as shown in Figure 5); one end of the tightening device 1 is provided with a fixed hook 8, and the other end One end is provided with a rotatable winch 9, and is connected with the pulley 3 on one side of the connector 5 through a second soft rope 10, one end of the second soft rope 10 is fixedly connected to the wire tightening device 1, and the other end is bypassed The corresponding pulley 3 is fixedly connected on the working edge of the winch wheel 9; the winch wheel 9 is provided with a rod handle 11; the opening of the hook 7 and the fixed hook 8 is provided with a rotatable The limit piece 12; the two groups of thread clamping devices 2 all include the bottom splint 13 and the movable splint 14 which are linked to each other, and are arranged in mirror image symmetry (as shown in Figure 2); the movable splint 14 includes two hinged ends One end of the moving splint 14 is rotatably connected to one end of the bottom splint 13, and the other end of the moving splint 14 is slidably connected to a groove bar 16 provided on the other end of the bottom splint 13. Control the position of the sliding end of the movable splint 14 in the groove bar 16 to realize the opening and closing state of the movable splint 14 and the bottom splint 13 (as shown in Figures 3 and 4); Hold block 17.

In actual operation, the bundled cables are installed through the following steps:

1. Use the fixed hook 8 at one end of the wire tightening device 1 to connect to the fixed object, and use the limit piece 12 on the fixed hook 8 to prevent the fixed hook 8 from detaching from the fixed object;

2. Two mirror-symmetric clamping devices 2 respectively clamp the wires at both ends of the bundled cable;

3. Turn the reel 9 and release the second flexible cable 10, and make the connecting unit 6 wound on the second flexible cable 10 and the connecting unit 6 wound on the first flexible cable 4 be fastened through the hook 7;

4. Turn the handle 11 and drive the winch wheel 9 to rotate, then wind and shrink the second flexible cable 10, and pull the bundled cables to the first installation station. During this process, due to the matching between the fixed hook 8 and the fixed object, The 7 hooks are all movably connected, and the wire tensioner will adjust its own posture according to the change of the force direction of the bundled cables, and the first flexible rope 4 can be slidably wound on the pulley 3, so that the two wire clamping devices 2 are balanced Force.

The installation of bundled cables can be realized through the above steps.

In actual operation, in the wire tightening device 1, the bottom splint 13 and the rotating end of the movable splint 14 are connected to the first flexible cable 4, and the wires at both ends of the bundled cables are inserted from one end of the groove bar 16 of the wire tightening device 1 and clamped. When the movable splint 14 and the bottom splint 13 are clamping and pulling the wires, due to the friction between the movable splint 14 and the wires, the movable splint 14 will move along the groove bar 16 to the end of the bottom splint 13 under the friction force. The trend of movement, according to the structural principle of the clamping device 2, the sliding end of the movable splint 14 moves along the groove bar 16 to the end of the bottom splint 13, the smaller the gap between the movable splint 14 and the bottom splint 13, the clamping of the wire The higher the holding strength is, the better it is to effectively prevent the lead from breaking away from the clamping device 2 when it is in the clamped state.

In actual operation, the two clamping devices 2 are symmetrically arranged in a mirror image, so that the clamping working surfaces of the clamping devices 2 are in an opposite state, which not only prevents the two sets of clamping devices from interfering with each other when clamping the wires, but also ensures that both sides of the bundled cables The pulling force on the wire is uniform.

In actual operation, the first soft rope 4 and the second soft rope 10 are preferably steel wire ropes, which have good toughness and good strength, and other ropes with good toughness and strength can also be used, which are regarded as this Embodiment of the utility model.

Claims (8)

1. parallel conductor cable wire grip; Comprise stringing device (1), wire-clamping device (2); It is characterized in that said stringing device (1) and said wire-clamping device (2) are connected on the both sides pulley (3) of a connection piece (5) through a soft rope respectively; Said wire-clamping device (2) is two groups, and is connected to first soft rope (4) two ends corresponding with it.

2. a kind of parallel conductor cable wire grip according to claim 1; It is characterized in that said connector (5) comprises two linkage units (6); Said linkage unit (6) is through the mutual snapping of the hook (7) of being located at the one of which end, and the other end of said linkage unit (6) is provided with said pulley (3).

3. a kind of parallel conductor cable wire grip according to claim 1; It is characterized in that said stringing device (1) one end is provided with stay hook (8); The other end is provided with a rotating reel (9); And be connected through the second soft rope (10) with the pulley (3) of connector (5) one sides, said second soft rope (10) one ends are fixed on the stringing device (1), and the other end is walked around corresponding pulley (3) and is fixed on the work edge of said reel (9).

4. a kind of parallel conductor cable wire grip according to claim 3 is characterized in that said reel (9) is provided with shaft-like handle (11).

5. a kind of parallel conductor cable wire grip according to claim 2 is characterized in that the opening part of said hook (7) and said stay hook (8) is equipped with rotating banking stop (12).

6. a kind of parallel conductor cable wire grip according to claim 1 is characterized in that said two groups of wire-clamping devices (2) include the bottom plate (13) and the moving clamping plate (14) of mutual interlock, and is the mirror image symmetric arrangement.

7. a kind of parallel conductor cable wire grip according to claim 6; It is characterized in that said moving clamping plate (14) comprise the hinged clamp bar of two radicles (15); Said moving clamping plate (14) one ends are rotatably connected on an end of said bottom plate (13); Said moving clamping plate (14) other end is slidingly connected in the groove bar (16) be located on said bottom plate (13) other end, realizes the folding condition of moving clamping plate (14) and bottom plate (13) through controlling the position of moving clamping plate (14) sliding end in groove bar (16).

8. a kind of parallel conductor cable wire grip according to claim 7, it is characterized in that said clamp bar (15) be provided with one with the grip block (17) of bottom plate (13) coupling.

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