CN113602906B - A wire abrasionproof decreases device for transmission line non-tension unwrapping wire - Google Patents

Abstract

The invention discloses an anti-abrasion device for wires used for non-tension pay-off of power transmission lines, comprising a base and an anti-wear mechanism, a turntable is arranged in the middle of the bottom plate, a vertical rod is rotatably connected to the upper part of the turntable through a bearing, and a tray is connected to the upper end of the vertical rod First pulleys are connected to both sides of the tray through support plates, two sets of second pulleys are alternately arranged on both sides of the first pulley, and the two sets of second pulleys are arranged obliquely. In the present invention, the first pulley is arranged on the tray, and two sets of second pulleys are alternately arranged on both sides of the first pulley, and the wire is arranged between the first pulley and the second pulley, which reduces the friction encountered during the cable laying process force, which reduces the wear on the surface of the cable, and a turntable is set on the lower part of the tray, so that the tray rotates in real time with the erection direction of the wire during the wire unwinding process, reducing the angle between the wire and the anti-wear device, thereby avoiding The core wire of the wire is broken, and the labor intensity of the worker for setting out the wire is reduced at the same time.

Description

An anti-abrasion device for wires used in non-tension pay-off for power transmission lines

technical field

The invention belongs to the technical field of wire erection, and in particular relates to a wire anti-wear device used for non-tension pay-off of power transmission lines.

Background technique

In the process of laying out the conductors of transmission lines, due to the use of non-tensioned laying-out for some low-voltage line projects, in the traction field and crossing points, due to the lack of anti-wear measures for the conductors, the conductors are worn to varying degrees and the overall quality of the project is reduced. .

The Chinese invention patent with the publication number CN103730866B discloses a cable laying device, and specifically discloses: it includes a plurality of angle iron brackets arranged on the wall of the common ditch and arranged along the direction of travel of the cables; The first cable pay-off frame on the ground near the feed opening, which has a first horizontal drum supporting the cable coiled out from the cable; the second cable pay-off frame for being arranged on the ground at the edge of the feed opening, which There is a second horizontal roller for the cable to bypass and make the cable suspended into the feeding port; when the cable is traveling, it is used to support the cable to avoid contact with the angle iron bracket. The pay-off wheels are set on the wall. When it is in use, there is rolling friction between the cable and the first horizontal roller, the second horizontal roller and each pay-off wheel, which reduces the friction force during the cable laying process, reduces the wear and tear on the cable surface, and reduces the wear and tear of the cable. The resistance encountered during travel improves the construction efficiency of cable laying, but when it is in use, the support, especially the pay-off frame, is in a fixed position, and when the cable is unwound, the angle between the cable reel and the cable erection point often changes. The angle of the support needs to be adjusted in real time during use, so that the cable and the drum are in a proper position, which increases the labor intensity of the workers.

Contents of the invention

The purpose of the present invention is to overcome the deficiencies in the prior art and provide a wire anti-wear device for non-tension pay-off of power transmission lines. A first pulley is set on the tray, and two The second set of pulleys, the wires are arranged between the first pulley and the second pulley, which reduces the friction force during the cable laying process and reduces the wear on the cable surface, and a turntable is set on the lower part of the tray, so that the tray is placed on the wire. During the threading process, it rotates in real time with the erection direction of the wire, which reduces the angle between the wire and the anti-wear device, thereby avoiding the breakage of the wire core wire and reducing the labor intensity of the worker.

In order to achieve the above object, the technical scheme adopted in the present invention is:

An anti-abrasion device for wires used for non-tension pay-off of power transmission lines, comprising a base and an anti-wear mechanism, the base includes a bottom plate, lugs are provided at the four corners of the bottom plate, and ground plugs are provided on the lugs for The base is fixed on the ground, the middle part of the bottom plate is provided with a turntable, and the upper part of the turntable is rotatably connected with a vertical rod through a bearing, the upper end of the vertical rod is connected with a tray, and the two sides of the tray are connected with first pulleys through a support plate, and the first pulley is There are two sets of second pulleys alternately arranged on both sides of a pulley, the two sets of second pulleys are arranged obliquely, and the height of the second pulleys is higher than that of the first pulleys, the wire is placed between the first pulleys and the second pulleys, and the second pulleys The two pulleys are movably installed on the lower part of the U-shaped frame. One side of the U-shaped frame is connected with a first connecting rod and a second connecting rod. The other ends of the first connecting rod and the second connecting rod are connected with the vertical plate. The lower part of the plate is provided with a connecting plate, and the lower end of the connecting plate is connected with the tray through a plurality of supporting rods.

When in use, place the anti-wear device of the wire at the lowest point of the vertical arc of the wire, and then place the wire between the first pulley and the second pulley. When the wire is unwound, the cable rolls between the first pulley and the second pulley Friction, which reduces the friction force received during the wire erection process, especially avoids the abrasion of the insulation layer caused by the direct friction between the wire and the ground, and when the wire is unwound, the second pulley limits the wire within the length of the first pulley, avoiding The wire falls off from the first pulley; in addition, when the wire is unwound, as the suspension point of the wire changes, the angle between the new suspension point and the cable reel changes, and the torsional force of the wire drives the pole to rotate on the turntable to accommodate The change of the angle of the cable avoids a large angle deviation of the cable between the cable reel, the first pulley and the suspension point, causing cable bending damage, and avoids the traditional manual adjustment of the angle of the anti-wear device, thus reducing the labor force of the workers. Labor intensity.

As a further preference of this technical solution, the support rod is connected with the tray in a gap, so that the support rod slides up and down on the tray, and the outside of the support rod is provided with a tension spring, and the upper end of the tension spring is fixedly connected with the lower wall of the connecting plate. The lower end of the spring is fixedly connected with the tray, and the extension spring keeps the second pulley in contact with the wire, which ensures the clamping effect of the first pulley and the second pulley on the wire.

As a further preference of this technical solution, one end of the first connecting rod is hinged to the U-shaped frame, and the other end is fixedly connected to the vertical plate; one end of the second connecting rod is hinged to the U-shaped frame, and the other end passes through the vertical plate and is connected to the vertical plate. The vertical plate is slidingly connected, and the first adjusting nut is threaded on the second connecting rod; by adjusting the position of the first adjusting nut on the second connecting rod, the inclination angle of the second pulley can be adjusted, which is suitable for wires with different diameters. When the wire is used and the wire is unwound, the self-weight of the U-shaped frame and the second pulley will hold the wire.

As a further preference of this technical solution, the second connecting rod is sheathed with a first spring, one end of the first spring is fixedly connected to the vertical plate, and the other end of the first spring is fixedly connected to the hinge support at one end of the second connecting rod , the elastic force of the first spring keeps the second pulley in contact with the wire, which enhances the pressing effect of the second pulley on the wire.

As a further optimization of this technical solution, a non-return mechanism is provided on one side of the tray, and the non-return mechanism includes a frame arranged symmetrically up and down, one end of the frame is fixedly connected to the tray, and wing plates are provided on both sides of the frame, and the upper and lower sides The wings of the two frames are connected by a number of connecting bolts. The inside of the frame is provided with wedge-shaped clamping blocks, and the right-angled sides of the wedge-shaped clamping blocks are in contact with the wires; the lower part of the frame is connected with a third connecting rod, and the third connecting rod The lower end is connected with a roller, and the roller is placed on the slope of the wedge-shaped wire clamping block; a third spring is connected to one side of the wedge-shaped wire clamping block, and the other end of the third spring is fixedly connected with the inner wall of the frame; when the wire is unwound, the frame Install on both sides of the wire, and keep a certain pressure between the bottom surface of the wedge-shaped wire clamping block and the wire, so that there is a certain friction between the wedge-shaped wire clamping block and the wire, the wire slides to the left, and the wire and the wedge-shaped wire clamping block. The friction force makes the wedge-shaped wire clamping block move to the left. At this time, the roller is separated from the slope of the wedge-shaped wire clamping block. Sliding to the right, at this time the rollers are in contact with the slope of the wedge-shaped wire clamping block. When the wedge-shaped wire clamping block continues to slide to the right, the roller pushes against the wedge-shaped wire clamping block and moves downward to generate a greater clamping force on the wire to avoid the reverse direction of the wire. Return the line to ensure the safety of the line.

As a further preference of this technical solution, an extension plate is provided at one end of the wedge-shaped wire clamping block, a fourth connecting rod is connected to one side of the extending plate, a slide groove is provided on one side of the frame, and the fourth connecting rod is slidably installed on the slide Inside the groove, and in the initial state or the state of unwinding, the fourth connecting rod is located at the upper end of the chute, and one end of the fourth connecting rod is provided with a second adjusting nut, and the fourth connecting rod and the second adjusting nut are used to adjust the wedge clamp The initial position of the wire block is suitable for wires with different diameters.

As a further preference of this technical solution, a second spring is provided outside the connecting bolt, and the second spring is against the wing plates of the upper and lower frames, and the second spring causes pre-tension between the upper and lower wedge-shaped clamping blocks and the wires Force, so as to ensure the anti-reverse effect of the wedge-shaped clamping block.

As a further optimization of this technical solution, a guide groove is provided on the inclined surface of the wedge-shaped wire clamping block, and the roller is arranged inside the guide groove, and the guide groove ensures that the wedge-shaped wire clamping block moves linearly inside the frame, thereby ensuring that the wedge-shaped wire clamping block The anti-reverse effect of the line block.

As a further preference of this technical solution, the bottom of the wedge-shaped wire clamping block is arc-shaped, which expands the contact area between the wedge-shaped wire clamping block and the wire, thereby enlarging the friction between the wedge-shaped wire clamping block and the wire. The left and right sides of the wire block are provided with rounded corners, which prevents the insulation skin of the wire from being worn by the wedge-shaped clamping wire block.

As a further preference of the technical solution, a rubber pad is provided at the lower part of the wedge-shaped clamping block, which further avoids the wear of the wire by the wedge-shaped clamping block.

The beneficial effects of the present invention are:

1) In the present invention, first pulleys are arranged on the tray, and two sets of second pulleys are alternately arranged on both sides of the first pulleys, and the wires are arranged between the first pulleys and the second pulleys, which reduces the damage caused by cable laying. The friction force reduces the wear on the surface of the cable, and a turntable is set on the lower part of the tray, so that the tray rotates in real time with the erection direction of the wire during the wire unwinding process, reducing the angle between the wire and the anti-wear device, thus The breakage of the conductor core wire is avoided, and the labor intensity of the worker for setting out the wire is reduced at the same time.

2) The support rod is connected to the tray with a gap, so that the support rod slides up and down on the tray. The support rod is equipped with a tension spring. The upper end of the tension spring is fixedly connected with the lower wall of the connecting plate, and the lower end of the tension spring is fixedly connected with the tray. Keeping the second pulley in contact with the wire ensures the clamping effect of the first pulley and the second pulley on the wire.

3) One end of the first connecting rod is hinged with the U-shaped frame, and the other end is fixedly connected with the vertical plate. One end of the second connecting rod is hinged with the U-shaped frame, and the other end passes through the vertical plate and is slidingly connected with the vertical plate. The threaded connection has the first adjusting nut; by adjusting the position of the first adjusting nut on the second connecting rod, the inclination angle of the second pulley can be adjusted, which is suitable for wires with different diameters. The self-weight of the two pulleys holds the wire.

4) The first spring is sheathed outside the second connecting rod, one end of the first spring is fixedly connected with the vertical plate, the other end of the first spring is fixedly connected with the hinge support at one end of the second connecting rod, the elastic force of the first spring makes the second The second pulley keeps in contact with the wire, which enhances the pressing effect of the second pulley on the wire.

5) There is an anti-reverse mechanism on one side of the tray, and a wedge-shaped clamping block is provided inside the frame, and the rollers are placed on the slope of the wedge-shaped clamping block; A certain pressure is maintained between the bottom surface of the block and the wire, so that there is a certain friction force between the wedge-shaped wire clamping block and the wire, the wire slides to the left, and the friction between the wire and the wedge-shaped wire clamping block makes the wedge-shaped wire clamping block move to the left. When the roller is separated from the slope of the wedge-shaped wire clamping block, when the wire slides in reverse, the friction between the wire and the wedge-shaped wire clamping block and the elastic force of the third spring make the wedge-shaped wire clamping block slide to the right. At this time, the roller and the wedge-shaped wire clamping block When the wedge-shaped clamp block continues to slide to the right, the roller pushes against the wedge-shaped clamp block and moves downward to generate a greater clamping force on the wire, so as to avoid the reverse return of the wire and ensure the safety of the wire.

6) One end of the wedge-shaped clamping block is provided with an extension plate, one side of the extension plate is connected with the fourth connecting rod, one side of the frame is provided with a chute, the fourth connecting rod is slidably installed inside the chute, and the initial state or the wire-releasing state , the fourth connecting rod is located at the upper end of the chute, and one end of the fourth connecting rod is provided with a second adjusting nut. The fourth connecting rod and the second adjusting nut are used to adjust the initial position of the wedge-shaped clamping block to adapt to wires of different diameters. Use it on line.

7) There is a second spring on the outside of the connecting bolt. The second spring is against the wings of the upper and lower frames. The second spring makes the upper and lower wedge-shaped clamping blocks and the wires generate pre-tightening force, thereby ensuring the wedge-shaped clamping blocks. anti-reverse effect.

8) There is a guide groove on the inclined surface of the wedge-shaped wire clamping block, and the rollers are arranged inside the guide groove. The guide groove ensures that the wedge-shaped wire clamping block moves linearly inside the frame, thereby ensuring the anti-reverse effect of the wedge-shaped wire clamping block.

9) The bottom of the wedge-shaped clamping block is arc-shaped, which expands the contact area between the wedge-shaped clamping block and the wire, thereby expanding the friction between the wedge-shaped clamping block and the wire, and the left and right sides of the wedge-shaped clamping block are equipped with rounded corners , avoiding the abrasion of the wire insulation caused by the wedge-shaped clamping block.

10) The lower part of the wedge-shaped wire clamping block is provided with a rubber pad, which further avoids the wear and tear of the wedge-shaped wire clamping block on the wire.

Description of drawings

Accompanying drawing 1 is a diagram of the use state of a wire anti-wear device used for non-tension pay-off of power transmission lines according to the present invention.

Accompanying drawing 2 is a schematic diagram of the structure of the base of the wire anti-wear device used in the non-tension pay-off of the transmission line according to the present invention.

Accompanying drawing 3 is a schematic diagram of the structure of the anti-wear mechanism in a wire anti-wear device for non-tension pay-off of power transmission lines according to the present invention.

Accompanying drawing 4 is the assembly diagram of the second pulley in the anti-wearing device of the wire used in the non-tension pay-off of the transmission line according to the present invention.

Accompanying drawing 5 is a view of the use state of the anti-reverse mechanism in a wire anti-wear device for non-tension pay-off of power transmission lines according to the present invention.

Accompanying drawing 6 is a structural schematic diagram of the anti-reverse mechanism in a wire anti-wear device for non-tension pay-off of power transmission lines according to the present invention.

Accompanying drawing 7 is a schematic diagram of assembly of a wedge-shaped clamping block in a wire anti-wear device used for non-tension pay-off of a power transmission line according to the present invention.

Accompanying drawing 8 is a left side view of a wedge-shaped clamping block in a wire anti-wear device for non-tension pay-off of a power transmission line according to the present invention.

In the figure: 1, base; 101, bottom plate; 102, lug; 103, ground plug; 104, turntable; 105, bearing; 106, pole; 107, tray;

2. Anti-wear mechanism; 201, connecting plate; 202, support rod; 203, extension spring; 204, vertical plate; 205, first connecting rod; 206, second connecting rod; 207, first adjusting nut; 208, the first One spring; 209, U-shaped frame; 210, the second pulley; 211, the first pulley; 212, support plate;

3. Non-reverse mechanism; 301, frame; 302, wing plate; 303, connecting bolt; 304, second spring; 305, chute; 306, wedge-shaped clamping block; 307, roller; 308, third connecting rod; 309 , guide groove; 310, the third spring; 311, the extension plate; 312, the fourth connecting rod; 313, the second adjusting nut;

4. Wire.

Detailed ways

The technical solutions in the embodiments of the present invention are clearly and completely described below in conjunction with the accompanying drawings 1-8. Apparently, the described embodiments are only some of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

In describing the present invention, it should be understood that the terms "longitudinal", "transverse", "upper", "lower", "front", "rear", "left", "right", "vertical", The orientations or positional relationships indicated by "horizontal", "top", "bottom", "inner", "outer", etc. are based on the orientations or positional relationships shown in the drawings, and are only for the convenience of describing the present invention, rather than indicating or It should not be construed as limiting the invention by implying that a referenced device or element must have a particular orientation, configuration, and operation in a particular orientation.

As shown in Figures 1-4, a wire anti-wear device for non-tension payoff of power transmission lines includes a base 1 and an anti-wear mechanism 2. The base 1 includes a bottom plate 101, and four corners of the bottom plate 101 are provided with protrusions Ear 102, lug 102 is provided with ground plug 103, is used for fixing base 1 on the ground, and described base plate 101 middle part is provided with turntable 104, and turntable 104 top is connected with upright bar 106 rotationally through bearing 105, and described upright bar The upper end of 106 is connected with a tray 107, the two sides of the tray 107 are connected with the first pulley 211 through the support plate 212, two sets of second pulleys 210 are arranged alternately on both sides of the first pulley 211, and the two sets of second pulleys 210 are inclined arrangement, and the height of the second pulley 210 is higher than the height of the first pulley 211, the wire 4 is placed between the first pulley 211 and the second pulley 210, and the second pulley 210 is movably installed at the bottom of the U-shaped frame 209, the One side of the U-shaped frame 209 is connected with a first connecting rod 205 and a second connecting rod 206, and the other end of the first connecting rod 205 and the second connecting rod 206 is connected with the vertical plate 204, and the bottom of the vertical plate 204 is provided with a connecting plate 201 , the lower end of the connecting plate 201 is connected to the tray 107 through a plurality of support rods 202 .

During use, the wire anti-wear device is placed on the lowest point of the vertical arc of the wire 4, and then the wire 4 is placed between the first pulley 211 and the second pulley 210. Rolling friction between the wire 4 and the second pulley 210 reduces the friction force received during the erection of the wire 4, especially avoiding the insulation layer wear caused by the wire 4 directly rubbing against the ground, and when the wire 4 is unwound, the second pulley 210 pulls the wire 4 It is limited within the length range of the first pulley 211, which prevents the wire 4 from falling off the first pulley 211; in addition, when the wire 4 is unwound, as the suspension point of the wire 4 changes, the angle between the new suspension point and the cable reel Change occurs, the torsional force of the wire 4 drives the vertical rod 106 to rotate on the turntable 104 to adapt to the change of the cable angle, avoiding the large angular deviation of the cable between the cable drum, the first pulley 211 and the suspension point, resulting in The cable is bent and damaged, avoiding the traditional manual adjustment of the angle of the anti-wear device, thereby reducing the labor intensity of the workers.

As shown in Figure 3, in this embodiment, the support rod 202 is connected with the tray 107 in a gap, so that the support rod 202 slides up and down on the tray 107, and the support rod 202 is sleeved with a tension spring 203, and the tension spring 203 The upper end of the upper end is fixedly connected with the lower wall of the connection plate 201, and the lower end of the extension spring 203 is fixedly connected with the tray 107. The extension spring 203 keeps the second pulley 210 in contact with the wire 4, ensuring that the first pulley 211 and the second pulley 210 are connected to the wire 4. clamping effect.

As shown in Figure 4, in this embodiment, one end of the first connecting rod 205 is hinged to the U-shaped frame 209, the other end is fixedly connected to the vertical plate 204, and one end of the second connecting rod 206 is hinged to the U-shaped frame 209 , the other end passes through the vertical plate 204 and is slidably connected with the vertical plate 204, and the first adjusting nut 207 is threaded on the second connecting rod 206; by adjusting the position of the first adjusting nut 207 on the second connecting rod 206, Adjusting the inclination angle of the second pulley 210 is suitable for wires 4 of different diameters to be used for unwinding. When unwrapping, the self-weight of the U-shaped frame 209 and the second pulley 210 presses the wires 4 .

As shown in Figure 4, in this embodiment, the second connecting rod 206 is sheathed with a first spring 208, one end of the first spring 208 is fixedly connected to the vertical plate 204, and the other end of the first spring 208 is connected to the second The hinge support at one end of the connecting rod 206 is fixedly connected, and the elastic force of the first spring 208 keeps the second pulley 210 in contact with the wire 4 , which enhances the pressing effect of the second pulley 210 on the wire 4 .

As shown in Fig. 1 and Fig. 5-7, in this embodiment, a non-return mechanism 3 is provided on one side of the tray 107, and the non-return mechanism 3 includes a frame 301 arranged symmetrically up and down, and one end of the frame 301 is connected to the tray 107. Fixedly connected, the two sides of the frame 301 are provided with wing plates 302, and the wing plates 302 of the upper and lower frames 301 are connected by a number of connecting bolts 303. The inside of the frame 301 is provided with wedge-shaped clamping blocks 306, wedge-shaped clamping blocks 306 The right-angled side of the frame 301 is connected to the third connecting rod 308, and the lower end of the third connecting rod 308 is connected to the roller 307, and the roller 307 is placed on the slope of the wedge-shaped clamping block 306; the wedge-shaped clamp One side of the wire block 306 is connected with a third spring 310, and the other end of the third spring 310 is fixedly connected with the inner wall of the frame 301; A certain pressure is maintained between the bottom surface of 306 and the wire 4, so that there is a certain friction force between the wedge-shaped wire clamping block 306 and the wire 4, the wire 4 slides to the left, and the friction between the wire 4 and the wedge-shaped wire clamping block 306 makes the wedge-shaped wire clamping Block 306 moves to the left, and now roller 307 is separated from the inclined plane of wedge-shaped wire clamping block 306, and when wire 4 reversely slides, the friction force between wire 4 and wedge-shaped wire clamping block 306 and the elastic force of the third spring 310 make wedge-shaped wire clamping Block 306 slides to the right, and now roller 307 contacts with the slope of wedge-shaped wire clamping block 306, and when wedge-shaped wire clamping block 306 continued to slide to the right, roller 307 pushed against wedge-shaped wire clamping block 306 and moved downwards to produce larger force on wire 4. The clamping force is to avoid the reverse loop of the wire 4 and ensure the safety of the wire release.

As shown in Figures 6-7, in this embodiment, an extension plate 311 is provided at one end of the wedge-shaped clamping block 306, a fourth connecting rod 312 is connected to one side of the extension plate 311, and a sliding rod 312 is provided on one side of the frame 301. groove 305, the fourth connecting rod 312 is slidably installed inside the sliding groove 305, and in the initial state or the wire-releasing state, the fourth connecting rod 312 is located at the upper end of the sliding groove 305, and one end of the fourth connecting rod 312 is provided with a second The adjusting nut 313, the fourth connecting rod 312 and the second adjusting nut 313 are used to adjust the initial position of the wedge-shaped clamping block 306, so as to adapt to the use of wires 4 with different diameters.

As shown in Fig. 6, in this embodiment, a second spring 304 is provided on the outside of the connecting bolt 303, and the second spring 304 is against the wing plates 302 of the frame 301 on the upper and lower sides, and the second spring 304 makes the upper and lower parts A pre-tightening force is generated between the wedge-shaped wire clamping block 306 and the wire 4 to ensure the anti-reverse effect of the wedge-shaped wire clamping block 306 .

As shown in Figure 7, in this embodiment, a guide groove 309 is provided on the inclined surface of the wedge-shaped wire clamping block 306, and the roller 307 is arranged inside the guide groove 309, and the guide groove 309 ensures that the wedge-shaped wire clamping block 306 The inside of the frame 301 moves linearly, thereby ensuring the anti-reverse effect of the wedge-shaped clamping block 306 .

As shown in Figure 8, in this embodiment, the bottom of the wedge-shaped wire clamping block 306 is arc-shaped, which expands the contact area between the wedge-shaped wire clamping block 306 and the wire 4, thereby enlarging the wedge-shaped wire clamping block 306 and the wire 4. The friction force between them, the left and right sides of the wedge-shaped clamping block 306 are provided with rounded corners, which prevents the wedge-shaped clamping block 306 from wearing the insulation of the wire 4 .

In this embodiment, a rubber pad is provided at the lower part of the wedge-shaped wire clamping block 306 , which further prevents the wire 4 from being worn by the wedge-shaped wire clamping block 306 .

The above content is only an example and description of the structure of the present invention. Those skilled in the art make various modifications or supplements to the described specific embodiments or replace them in similar ways, as long as they do not deviate from the structure of the invention. Or beyond the scope defined in the claims, all should belong to the protection scope of the present invention.

Claims (9)

1. A wire anti-wear device for non-tension pay-off of power transmission lines, comprising a base and an anti-wear mechanism, the base includes a base plate, lugs are provided at the four corners of the base plate, ground plugs are provided on the lugs, and It is characterized in that a turntable is provided in the middle of the bottom plate, and the upper part of the turntable is rotatably connected with a vertical rod through a bearing, and the upper end of the vertical rod is connected with a tray, and the two sides of the tray are connected with a first pulley through a support plate, and the first pulley There are two sets of second pulleys alternately arranged on both sides. The two sets of second pulleys are arranged obliquely, and the height of the second pulleys is higher than that of the first pulleys. The wire is placed between the first pulleys and the second pulleys. The second pulleys It is movably installed on the lower part of the U-shaped frame, one side of the U-shaped frame is connected with a first connecting rod and a second connecting rod, and the other end of the first connecting rod and the second connecting rod is connected with the vertical plate, and the lower part of the vertical plate A connecting plate is provided, and the lower end of the connecting plate is connected to the tray through several support rods; a non-return mechanism is provided on one side of the tray, and the non-return mechanism includes a frame arranged symmetrically up and down, one end of the frame is fixedly connected to the tray, and the two sides of the frame There are wing plates on the side, and the wing plates of the upper and lower frames are connected by a number of connecting bolts. The inside of the frame is provided with wedge-shaped clamping blocks, and the right-angled sides of the wedge-shaped clamping blocks are in contact with the wires; the lower part of the frame is connected with the second Three connecting rods, the lower end of the third connecting rod is connected with a roller, and the roller is placed on the inclined surface of the wedge-shaped wire clamping block; one side of the wedge-shaped wire clamping block is connected with a third spring, and the other end of the third spring is fixedly connected with the inner wall of the frame When the wire is unwound, the frame is installed on both sides of the wire, and a certain pressure is maintained between the bottom surface of the wedge-shaped wire clamping block and the wire, so that there is a certain friction between the wedge-shaped wire clamping block and the wire. 2. A wire anti-wear device for non-tension pay-off of power transmission lines according to claim 1, characterized in that, the support rod is connected to the tray in a gap, and the outside of the support rod is provided with a tension spring to pull The upper end of the spring is fixedly connected with the lower wall of the connecting plate, and the lower end of the extension spring is fixedly connected with the tray. 3. A wire anti-wear device for non-tension pay-off of power transmission lines according to claim 1, characterized in that one end of the first connecting rod is hinged to the U-shaped frame, and the other end is fixedly connected to the vertical plate, One end of the second connecting rod is hinged with the U-shaped frame, and the other end passes through the vertical plate and is slidably connected with the vertical plate. The first adjusting nut is threaded on the second connecting rod. 4. A wire anti-wear device for non-tension pay-off of power transmission lines according to claim 3, characterized in that a first spring is sheathed on the outside of the second connecting rod, and one end of the first spring is in contact with the vertical The plate is fixedly connected, and the other end of the first spring is fixedly connected with the hinge support at one end of the second connecting rod. 5. A wire anti-wear device for non-tension pay-off of power transmission lines according to claim 1, characterized in that an extension plate is provided at one end of the wedge-shaped clamping block, and a fourth connection is connected to one side of the extension plate. One side of the frame is provided with a chute, and the fourth connecting rod is slidably installed inside the chute, and in the initial state or in the wire-releasing state, the fourth connecting rod is located at the upper end of the chute, and one end of the fourth connecting rod A second adjusting nut is provided. 6. A wire anti-wear device for non-tension pay-off of power transmission lines according to claim 1, characterized in that, a second spring is arranged outside the connecting bolt, and the second spring is connected with the wings of the frame on both sides of the upper and lower sides. The plates are offset. 7. A wire anti-wear device for non-tension pay-off of power transmission lines according to claim 1, characterized in that guide grooves are provided on the inclined surface of the wedge-shaped clamping block, and the rollers are arranged in the guide grooves internal. 8. A wire anti-wear device for non-tension pay-off of power transmission lines according to claim 1, characterized in that the bottom of the wedge-shaped clamping block is arc-shaped, and the left and right sides of the wedge-shaped clamping block are both Features rounded corners. 9 . The anti-wear device for wires used in non-tension wire release of transmission lines according to claim 1 , wherein a rubber pad is provided at the lower part of the wedge-shaped clamping block. 10 .

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