CN115520727A

CN115520727A - Pay-off device for wires and cables and pay-off method thereof

Info

Publication number: CN115520727A
Application number: CN202211144526.8A
Authority: CN
Inventors: 郭路轶; 曾灵; 钟伟
Original assignee: Hunan Sanxiang Wire & Cable Co ltd
Current assignee: Hunan Sanxiang Wire & Cable Co ltd
Priority date: 2022-09-20
Filing date: 2022-09-20
Publication date: 2022-12-27
Anticipated expiration: 2042-09-20
Also published as: CN115520727B

Abstract

The invention relates to a pay-off device for wires and cables, which comprises a pay-off reel and further comprises: the pay-off mechanism is arranged on the base, a second vertical frame which is vertically and upwards arranged is fixed on the base, a first shaft lever is rotatably connected to the second vertical frame in a fixed shaft mode, the first shaft lever is coaxially and fixedly connected with the pay-off reel, the pay-off mechanism is in transmission connection with the pay-off reel through a damping transmission mechanism, and the pay-off reel is enabled to pay off wires and cables; the locking mechanism is arranged on the base and communicated with the damping transmission mechanism through a pipeline, the damping transmission mechanism drives the locking mechanism through hydraulic circulating flow, the locking mechanism locks the pay-off reel when the pay-off mechanism stops paying off, and the locking mechanism releases locking of the pay-off reel when the pay-off mechanism drives the pay-off reel to pay off wires and cables. According to the pay-off device for the wires and the cables and the pay-off method thereof, impact damage to the output shaft of the motor when the pay-off is started or stopped in the pay-off process is greatly reduced, and the service life is prolonged.

Description

Paying-off device for wires and cables and paying-off method thereof

Technical Field

The invention relates to the field of cable paying-off equipment, in particular to a paying-off device for wires and cables and a paying-off method thereof.

Background

In the paying-off process of wires and cables coiled into coils, due to the fact that the length of the wires and cables is long, the wires and cables cannot be paid off at one time in practical use, intermittent paying-off needs to be conducted for many times, for large-size wire coils, when a driving device starts to drive the wire coils to rotate in the paying-off starting and stopping process, due to the fact that the inertia of the wire coils is large at the starting moment, the driving device cannot immediately drive the wire coils to rotate, and therefore a transmission main shaft is subjected to large torsional stress.

Disclosure of Invention

The invention aims to provide a pay-off device for wires and cables and a pay-off method thereof, so as to solve the problems in the background technology. In order to achieve the purpose, the invention provides the following technical scheme: the utility model provides a pay-off for wire and cable, is including setting up the drawing drum on the base, still includes:

the pay-off mechanism is arranged on the base, a second vertical frame which is vertically and upwards arranged is fixed on the base, a first shaft lever is rotatably connected to the second vertical frame in a fixed shaft mode, the first shaft lever is coaxially and fixedly connected with the pay-off reel, the pay-off mechanism is in transmission connection with the pay-off reel through a damping transmission mechanism, and the pay-off reel is enabled to pay off wires and cables;

the locking mechanism that sets up on the base, and locking mechanism is linked together through pipeline and damping drive mechanism to damping drive mechanism drives locking mechanism through hydraulic circulation flow, makes locking mechanism lock the drawing drum when paying out mechanism stops the unwrapping wire, and locking mechanism removes the locking to the drawing drum when the drawing drum is driven to carry out the unwrapping wire to electric wire and cable to drawing mechanism drive.

Preferably, paying out machine constructs including fixing the motor on the base, and the motor passes through the speed reducer and is connected with the transmission of many arriss pole, is fixed with the vertical grudging post one that upwards sets up on the base, and the dead axle rotates on the grudging post one and is connected with axostylus axostyle two, and axostylus axostyle two sets up with an axostylus axostyle common central axis, and axostylus axostyle two is through damping drive mechanism and an axostylus axostyle transmission connection.

Preferably, the speed reducing mechanism is fixed on the base, an air cylinder is fixed on the speed reducing mechanism, the air cylinder and the motor are connected in parallel and then are connected into a circuit together, a shaft frame is fixed to a piston rod end of the air cylinder, a fixed shaft is rotatably connected to the shaft frame, the multi-edge rod is inserted into the pipe shaft and can slide in the pipe shaft, a second gear is fixedly connected to one end, far away from the multi-edge rod, of the pipe shaft in a coaxial mode, a first gear is fixedly connected to one end, far away from the damping transmission mechanism, of the second shaft in a coaxial mode, and the first gear can be in meshed transmission connection with the second gear.

Preferably, a cantilever is fixed on the first vertical frame, a first rack and a second rack penetrate through and are connected with the cantilever in a sliding mode, the first rack and the second rack are connected through a third gear in a transmission mode, a third fixed shaft of the gear is connected to the first vertical frame in a rotating mode, an arc-shaped tooth block II is fixed at the upper end of the first rack and can be in meshed contact with a fluted disc, the fluted disc is coaxially and fixedly connected to the second shaft rod, and the second rack is fixedly connected to the shaft frame.

Preferably, the damping transmission mechanism comprises a first rotating disc and a second rotating disc which are respectively and coaxially and fixedly connected to the opposite ends of the first shaft rod and the opposite ends of the second shaft rod, three first protruding blocks and three second protruding blocks are respectively arranged on the opposite surfaces of the first rotating disc and the second rotating disc, the three first protruding blocks are arranged and fixed on the first rotating disc at equal intervals along the circumferential direction of the first rotating disc, the three second protruding blocks are arranged and fixed on the second rotating disc at equal intervals along the circumferential direction of the second rotating disc, and the three first protruding blocks and the three second protruding blocks are arranged in a staggered pattern arrangement.

Preferably, the side surfaces of the first convex blocks facing the two sides of the second convex blocks are respectively provided with a rubber cushion block and a pull rod, the rubber cushion blocks are fixed on the second convex blocks, the pull rods are hinged on the second convex blocks, one sides of the first convex blocks facing the second convex blocks and provided with the pull rods are hinged with a pump cylinder, the pump cylinder is connected with a second piston plate in a sliding mode, and one ends of the pull rods and the second convex blocks are fixedly connected with the corresponding second piston plates.

Preferably, two annular protrusions are fixed on the outer peripheral wall of the second shaft rod, an annular groove is formed between the two annular protrusions, an annular pipe is fixed on the first vertical frame, the cross section of the annular pipe is in a shape corresponding to the annular groove, the two annular protrusions are located on the inner side of the annular pipe and are in contact with the inner side wall of the annular pipe in an attaching mode to form a sealing state, and the pump cylinder is communicated with the annular groove through the first liquid pipe.

Preferably, locking mechanism is including fixing the liquid storage cylinder on the base, and sliding connection has piston plate one in the liquid storage cylinder, and piston plate one is connected with the upper end of liquid storage cylinder through the spring, and the last fixed surface of piston plate one has vertical ascending slide bar, and the slide bar runs through and sliding connection on the upper end wall of liquid storage cylinder, and the upper end of slide bar is fixed with arc tooth piece one, and arc tooth piece one can with the contact of ring gear interlock, the ring gear cover is established and is fixed on carousel one.

Preferably, the ring pipe is communicated with the liquid storage cylinder through a second liquid pipe, the second liquid pipe is connected with a branch pipe, the branch pipe is communicated with the liquid storage cylinder, a second one-way valve is connected onto the branch pipe, the conduction direction of the second one-way valve points to the liquid storage cylinder, a first one-way valve and a flow limiting valve are connected to one section of the second liquid pipe, which is located between the branch pipe and the liquid storage cylinder, and the conduction direction of the first one-way valve points to the ring pipe.

A paying-off method for a paying-off device for electric wires and cables, comprising the steps of:

the method comprises the following steps: installing a wire coil to be paid off on a pay-off reel, driving the pay-off reel to pay off through a pay-off mechanism when the wire needs to be paid off, driving a damping transmission mechanism to apply work to hydraulic oil at an initial section of starting the pay-off mechanism, and protecting the pay-off mechanism when the wire needs to be paid off;

step two: when the stopping of the paying-off is interrupted, the paying-off mechanism stops working and cuts off the transmission path of the inertia force;

step three: when the pay-off is stopped, the inertial impact of the pay-off reel is buffered through the damping transmission mechanism, and the inertial impact is utilized to drive the locking mechanism to automatically lock the pay-off reel so as to stop the pay-off.

Compared with the prior art, the invention has the beneficial effects that:

according to the invention, when paying off is needed, the paying off disc is driven by the paying off mechanism to pay off, the damping transmission mechanism is driven to do work on hydraulic oil at the initial stage of starting the paying off mechanism, and the paying off mechanism is protected during paying off, so that the impact damage of the inertia force of sudden starting on the output shaft of the motor is greatly reduced, the motor is protected during starting during paying off, and the service life is prolonged.

According to the invention, when the stopping of the paying-off is interrupted, the paying-off mechanism stops working and breaks a transmission path of the inertia force, so that the inertia force is prevented from being applied to an output shaft of the motor, the motor is protected when the paying-off is stopped, the service life is prolonged, the inertia impact of the pay-off disc is buffered through the damping transmission mechanism, the locking mechanism is driven by the inertia impact to automatically lock the pay-off disc, the flexible automatic paying-off stopping is realized, and the inertia impact generated by the paying-off stopping is greatly reduced.

Drawings

FIG. 1 is a first schematic view of the cross-sectional structure of the final assembly of the present invention;

FIG. 2 is a schematic view of the cross-sectional structure of the final assembly of the present invention;

FIG. 3 is an enlarged schematic view of the structure at A in FIG. 1;

fig. 4 is a schematic view of a cross-sectional structure B-B in fig. 1.

In the figure: 1. a base; 2. a motor; 3. a first vertical frame; 4. a one-way valve I; 5. a flow-limiting valve; 6. a second one-way valve; 7. a first piston plate; 8. a spring; 9. a slide bar; 10. an arc-shaped tooth block I; 11. a second vertical frame; 12. a pay-off reel; 13. a first shaft lever; 14. a first rotating disc; 15. a ring gear; 16. a second rotating disc; 17. a ring pipe; 18. a fluted disc; 19. a second shaft lever; 20. a first gear; 21. a second gear; 22. a pedestal; 23. a tubular shaft; 24. a polygonal rod; 25. a cylinder; 26. a first rack; 27. a third gear; 28. a second rack; 29. a cantilever; 30. an arc-shaped tooth block II; 31. a first bump; 32. a second piston plate; 33. a pump barrel; 34. a pull rod; 35. a second bump; 36. a rubber cushion block; 37. a first liquid pipe; 38. a second liquid pipe; 39. a branch pipe; 40. the ring is convex; 41. a liquid storage cylinder.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be obtained by a person skilled in the art without any inventive step based on the embodiments of the present invention, are within the scope of the present invention.

Referring to fig. 1 to 4, the present invention provides a technical solution: a pay-off device for electric wires and cables comprises a pay-off reel 12 arranged on a base 1 and further comprises:

the paying-off mechanism is arranged on the base 1, a second vertical frame 11 which is vertically and upwards arranged is fixed on the base 1, a first shaft rod 13 is connected to the second vertical frame 11 in a fixed-shaft rotating mode, the first shaft rod 13 is coaxially and fixedly connected with a paying-off reel 12, the paying-off mechanism is in transmission connection with the paying-off reel 12 through a damping transmission mechanism, and the paying-off reel 12 is enabled to pay off wires and cables;

the locking mechanism that sets up on base 1, and locking mechanism is linked together through pipeline and damping drive mechanism to damping drive mechanism drives locking mechanism through hydraulic circulation flow, and locking mechanism removes the locking to drawing drum 12 when drawing mechanism drive drawing drum 12 carries out the unwrapping wire to wire and cable locking when making the drawing mechanism stop the unwrapping wire 12.

In this embodiment, the paying-off mechanism includes a motor 2 fixed on a base 1, the motor 2 is in transmission connection with a multi-edge rod 24 through a speed reducer, a first vertical frame 3 vertically and upwardly arranged is fixed on the base 1, a second shaft rod 19 is rotatably connected to a fixed shaft on the first vertical frame 3, the second shaft rod 19 and the first shaft rod 13 share a central axis, the second shaft rod 19 is in transmission connection with the first shaft rod 13 through a damping transmission mechanism, the speed reducer is fixed on the base 1, an air cylinder 25 is fixed on the speed reducer, the air cylinder 25 and the motor 2 are connected in parallel and then connected into a circuit together, a first gear rod end of the air cylinder 25 is fixed with a shaft frame 22, the fixed shaft on the shaft frame 22 is rotatably connected with a first shaft 23, the multi-edge rod 24 is inserted into the inside of the shaft 23 and can slide in the shaft 23, a second gear 21 is coaxially and fixedly connected to one end of the shaft 23 far away from the multi-edge rod 24, the first gear 20 is coaxially and fixedly connected to the second gear 19, the first gear 20 can be in meshing connection with the second gear 21, a cantilever 29 is fixed on the first gear, a first gear 26 and a second gear 28 is connected to a fixed gear rack 26, a third gear rack 27 is connected to a fixed gear plate 18, and a fixed gear block 30, and a fixed gear block is connected to the first gear 18.

In this embodiment, the damping transmission mechanism includes a first rotating disk 14 and a second rotating disk 16 which are respectively and coaxially and fixedly connected to opposite ends of a first shaft rod 13 and a second shaft rod 19, three first protruding blocks 31 and three second protruding blocks 35 are respectively arranged on opposite surfaces of the first rotating disk 14 and the second rotating disk 16, the three first protruding blocks 31 are arranged and fixed on the first rotating disk 14 at equal intervals along a circumferential direction of the first rotating disk 14, the three second protruding blocks 35 are arranged and fixed on the second rotating disk 16 at equal intervals along the circumferential direction of the second rotating disk 16, the three first protruding blocks 31 and the three second protruding blocks 35 are arranged in a staggered and flower-inserting manner, rubber cushion blocks 36 and pull rods 34 are respectively arranged on lateral surfaces of the first protruding blocks 31, facing to two sides of the second protruding blocks 35, of the rubber cushion blocks 36 are fixed on the second protruding blocks 35, the pull rods 34 are hinged on the second protruding blocks 35, one side, facing to the protruding blocks 31, provided with the pull rods 34, piston plates 32 are slidably connected in the pump cylinders 33, and one ends of the pull rods 34 and the second protruding blocks 35 are fixedly connected with the corresponding piston plates 32.

In this embodiment, two annular protrusions 40 are fixed on the outer peripheral wall of the second shaft rod 19, an annular groove is formed between the two annular protrusions 40, the first vertical frame 3 is fixed with the annular pipe 17, the cross section of the annular pipe 17 is in a shape corresponding to the annular groove, the two annular protrusions 40 are located on the inner side of the annular pipe 17 and are in contact with the inner side wall of the annular pipe 17 to form a sealed state, and the pump cylinder 33 is communicated with the annular groove through the first liquid pipe 37.

In this embodiment, the locking mechanism includes the liquid storage cylinder 41 fixed on the base 1, the liquid storage cylinder 41, hydraulic oil is filled in the recess and the pump barrel 33, sliding connection has piston plate one 7 in the liquid storage cylinder 41, and piston plate one 7 is connected with the upper end of liquid storage cylinder 41 through spring 8, the last fixed surface of piston plate one 7 has vertical ascending slide bar 9, and slide bar 9 runs through and sliding connection is on the upper end wall of liquid storage cylinder 41, the upper end of slide bar 9 is fixed with arc-shaped tooth piece one 10, and arc-shaped tooth piece one 10 can interlock contact with ring gear 15, ring gear 15 cover is established and is fixed on carousel one 14, ring pipe 17 is linked together with liquid storage cylinder 41 through two liquid pipes 38, and be connected with branch pipe 39 on two liquid pipes 38, branch pipe 39 is linked together with liquid storage cylinder 41, be connected with two check valve 6 on branch pipe 39, and the directional liquid storage cylinder 41 of the directional ring pipe of two check valve 6, one section that lies in between branch pipe 39 and liquid storage cylinder 41 on two liquid pipes 38 is connected with one check valve 4 and flow limiting valve 5, the directional 17 of the direction of the first check valve 4.

The paying-off method and the advantages of the paying-off device for the electric wires and the electric cables during paying-off are as follows:

the method comprises the following steps: as shown in fig. 1 and 2, a wire coil to be paid off is mounted on a pay-off reel 12, when the wire needs to be paid off, the motor 2 is started to work, the motor 2 is powered on and then drives the polygonal rod 24 to rotate through the speed reducer, so that the polygonal rod 24 drives the second gear 21 to rotate through the tubular shaft 23, the cylinder 25 is powered on while the motor 2 is powered on, so that the cylinder 25 extends out of a piston rod of the cylinder and drives the shaft frame 22 to move upwards, so that the shaft frame 22 synchronously drives the tubular shaft 23 and the second rack 28 to move upwards, the tubular shaft 23 moves upwards and simultaneously drives the second gear 21 to move upwards and enables the second gear 21 to be meshed with the first gear 20, the second rack 28 moves upwards and simultaneously drives the first rack 26 and the second arc-shaped blocks 30 thereon to move downwards through the third gear 27, so that the second arc-shaped blocks 30 do not contact with the fluted disc 18, and further do not block the rotation of the second shaft 19, the second shaft 19 drives the second shaft 19 to rotate clockwise in fig. 4 under the transmission action of the second gear 21 and the first gear 20, so that the second shaft 35 drives the first pay-off reel 14 to rotate through the first cable 13;

in the above steps, as shown in fig. 4, the second projection 35 is started at a higher speed so as to drive the second piston plate 32 to apply a suction force to the corresponding pump barrel 33 through the pull rod 34 in the initial stage, the suction force draws out the hydraulic oil in the ring groove through the first liquid pipe 37, and generates a suction force in the ring groove, because the conduction direction of the second check valve 6 points to the liquid storage barrel 41, and the conduction direction of the first check valve 4 points to the ring pipe 17, so that the hydraulic oil in the liquid storage barrel 41 is sucked into the ring pipe 17, and the second piston plate 32 is used for buffering the suction work of the hydraulic oil in the pump barrel 33, so that the impact damage of the sudden start to the inertia force of the output shaft of the motor 2 is greatly reduced, the motor 2 is protected when being started during paying off, the service life is prolonged, wherein the flow limiting valve 5 plays a role in limiting, and the damping of the hydraulic oil output from the liquid storage barrel 41 is increased, thereby increasing the buffering effect of the hydraulic oil sucked in the pump barrel 33;

step two: when the stopping of the paying-off is interrupted, the motor 2 and the air cylinder 25 are powered off simultaneously, so that the motor 2 stops driving the second gear 21, the piston rod of the air cylinder 25 is automatically recovered after the power off, the shaft bracket 22 simultaneously drives the second rack 28 and the pipe shaft 23 to move downwards, the pipe shaft 23 moves downwards to drive the second gear 21 to move downwards and is separated from the first gear 20 to be out of contact, a path of reversely transmitting the inertia force from the second shaft rod 19 is disconnected, the inertia force is prevented from being applied to an output shaft of the motor 2, the motor 2 is protected when the paying-off is stopped, and the service life is prolonged;

the rack II 28 moves downwards and simultaneously drives the rack I26 to move upwards through the gear III 27, so that the rack I26 drives the arc-shaped tooth block II 30 to be meshed and contacted with the fluted disc 18, the fluted disc 18 and the arc-shaped tooth block II 30 are locked to the shaft rod II 19 and are not moved, and the transmission of the inertia force is stopped at the connecting part of the fluted disc 18 and the arc-shaped tooth block II 30, so that the arc-shaped tooth block II 30 with low price is used for bearing inertia impact and is convenient to replace, and the use cost and the maintenance difficulty of the whole device are reduced;

step three: as described in the second step, because the second shaft rod 19 is locked when the motor 2 stops, the pay-off reel 12 drives the first rotating disc 14 to continue rotating through the first shaft rod 13 under the action of inertia force, at this time, the first projection 31 on the first rotating disc 14 drives the pump barrel 33 to approach to the second corresponding projection 35, so that the second piston plate 32 extrudes the hydraulic oil in the pump barrel 33, the hydraulic oil in the pump barrel 33 enters the annular pipe 17 through the first liquid pipe 37, and then enters the liquid storage barrel 41 through the second liquid pipe 38 and the branch pipe 39 thereon, due to the flow limiting effect of the flow limiting valve 5, the pressure in the liquid storage barrel 41 is rapidly increased, so that the first piston plate 7 moves up to compress the spring 8, so that the spring 8 obtains a restoring force, and the first piston plate 7 synchronously drives the first arc-shaped tooth block 10 to move up and contact with the ring gear 15 through the slide rod 9, so that the first rotating disc 14 and the first piston plate 13 are locked through the ring gear 15 and the first arc-shaped tooth block 10, thereby locking the pay-off reel 12, realizing flexible automatic pay-off, greatly reducing the release of the inertia generated by paying off, and the impact of the first piston plate 5 and the piston plate 7 and keeping the smooth contact with the first piston plate 13, so that the piston plate 7 does not drive the lower piston plate 13 to rotate at one piston plate 13 through the action of the lower slide rod 9.

It will be evident to those skilled in the art that the invention is not limited to the details of the foregoing illustrative embodiments, and that the present invention may be embodied in other specific forms without departing from the spirit or essential attributes thereof. The present embodiments are therefore to be considered in all respects as illustrative and not restrictive, the scope of the invention being indicated by the appended claims rather than by the foregoing description, and all changes which come within the meaning and range of equivalency of the claims are therefore intended to be embraced therein. Any reference sign in a claim should not be construed as limiting the claim concerned.

In the description of the present invention, "a plurality" means two or more unless otherwise specified; the terms "upper", "lower", "left", "right", "inner", "outer", "front", "rear", "head", "tail", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, are only for convenience in describing and simplifying the description, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed in a particular orientation, and be operated, and thus, should not be construed as limiting the invention. Furthermore, the terms "first," "second," "third," and the like are used for descriptive purposes only and are not to be construed as indicating or implying relative importance.

In the description of the present invention, it is to be noted that, unless otherwise explicitly specified or limited, the terms "connected" and "connected" are to be interpreted broadly, e.g., as being fixed or detachable or integrally connected; can be mechanically or electrically connected; may be directly connected or indirectly connected through an intermediate. The specific meanings of the above terms in the present invention can be understood in a specific case to those of ordinary skill in the art.

Claims

1. The utility model provides a pay-off for wire and cable, is including setting up drawing drum (12) on base (1), its characterized in that: further comprising:

the pay-off mechanism is arranged on the base (1), a second vertical frame (11) which is vertically and upwards arranged is fixed on the base (1), a first shaft rod (13) is connected to the second vertical frame (11) in a fixed-shaft rotating mode, the first shaft rod (13) is coaxially and fixedly connected with the pay-off reel (12), the pay-off mechanism is in transmission connection with the pay-off reel (12) through the damping transmission mechanism, and the pay-off reel (12) is enabled to pay off wires and cables;

the locking mechanism is arranged on the base (1), the locking mechanism is communicated with the damping transmission mechanism through a pipeline, the damping transmission mechanism drives the locking mechanism through hydraulic circulating flow, the locking mechanism locks the pay-off reel (12) when the pay-off mechanism stops paying off, and the locking mechanism releases locking of the pay-off reel (12) when the pay-off mechanism drives the pay-off reel (12) to pay off wires and cables.

2. A paying-off device for electric wire and cable according to claim 1, wherein: the paying-off mechanism comprises a motor (2) fixed on a base (1), the motor (2) is in transmission connection with a multi-edge rod (24) through a speed reducer, a vertical stand I (3) which is arranged upwards is fixed on the base (1), a fixed shaft is rotatably connected with a shaft rod II (19) on the stand I (3), the shaft rod II (19) and the shaft rod I (13) share the central axis and are arranged, and the shaft rod II (19) is in transmission connection with the shaft rod I (13) through a damping transmission mechanism.

3. A paying-off device for electric wires and cables according to claim 2, wherein: the speed reducing mechanism is fixed on the base (1), an air cylinder (25) is fixed on the speed reducing mechanism, the air cylinder (25) and the motor (2) are connected in parallel and then are connected into a circuit together, a shaft bracket (22) is fixed to a piston rod end of the air cylinder (25), a pipe shaft (23) is connected to the shaft bracket (22) in a fixed-shaft rotating mode, the multi-edge rod (24) is inserted into the pipe shaft (23) and can slide in the pipe shaft (23), a gear II (21) is fixedly connected to one end, far away from the multi-edge rod (24), of the pipe shaft (23) in a coaxial mode, one end, far away from the damping transmission mechanism, of the shaft II (19) is fixedly connected with a gear I (20) in a coaxial mode, and the gear I (20) can be in meshed transmission connection with the gear II (21).

4. A paying-off device for electric wire and cable according to claim 3, wherein: be fixed with cantilever (29) on grudging post (3), run through and sliding connection has rack one (26) and rack two (28) on cantilever (29), connect through the transmission of gear three (27) between rack one (26) and rack two (28), and gear three (27) dead axle rotates to be connected on grudging post one (3), the upper end of rack one (26) is fixed with arc tooth piece two (30), and arc tooth piece two (30) can with fluted disc (18) interlock contact, the coaxial fixed connection of fluted disc (18) is on axostylus axostyle two (19), rack two (28) fixed connection is on pedestal (22).

5. A paying-off device for electric wire and cable according to claim 2, wherein: the damping transmission mechanism comprises a first rotating disc (14) and a second rotating disc (16) which are respectively and coaxially and fixedly connected to opposite ends of a first rotating disc (13) and a second rotating disc (19), wherein three first protruding blocks (31) and three second protruding blocks (35) are respectively arranged on opposite surfaces of the first rotating disc (14) and the second rotating disc (16), the first protruding blocks (31) are arranged and fixed on the first rotating disc (14) at equal intervals along the circumferential direction of the first rotating disc (14), the second protruding blocks (35) are arranged and fixed on the second rotating disc (16) at equal intervals along the circumferential direction of the second rotating disc (16), and the first protruding blocks (31) and the second protruding blocks (35) are arranged in a staggered pattern inserting mode.

6. A paying-off device for electric wires and cables according to claim 5, characterized in that: the side of lug two (35) towards lug (31) of its both sides is provided with rubber pad (36) and pull rod (34) respectively, and rubber pad (36) are fixed on lug two (35), and pull rod (34) articulate on lug two (35), lug one (31) have one side of pull rod (34) to articulate on lug two (35) to have pump barrel (33), sliding connection has piston board two (32) in pump barrel (33), one end and the piston board two (32) fixed connection that correspond of pull rod (34) and lug two (35).

7. The paying-off device for electric wires and cables as claimed in claim 6, wherein: two annular protrusions (40) are fixed on the outer peripheral wall of the second shaft rod (19), an annular groove is formed between the two annular protrusions (40), an annular pipe (17) is fixed on the first vertical frame (3), the cross section of the annular pipe (17) is in a shape corresponding to the annular groove, the two annular protrusions (40) are located on the inner side of the annular pipe (17) and are in contact with the inner side wall of the annular pipe (17) in an attaching mode to form a sealing state, and the pump cylinder (33) is communicated with the annular groove through the first liquid pipe (37).

8. A paying-off device for electric wire and cable as claimed in claim 7, wherein: locking mechanism is including fixing stock solution section of thick bamboo (41) on base (1), sliding connection has piston plate (7) in stock solution section of thick bamboo (41), and piston plate (7) are connected with the upper end of stock solution section of thick bamboo (41) through spring (8), the last fixed surface of piston plate (7) has vertical ascending slide bar (9), and slide bar (9) run through and sliding connection on the upper end wall of stock solution section of thick bamboo (41), the upper end of slide bar (9) is fixed with arc tooth piece (10), and arc tooth piece (10) can with ring gear (15) interlock contact, ring gear (15) cover is established and is fixed on carousel (14).

9. A paying-off device for electric wire and cable as claimed in claim 8, wherein: the ring pipe (17) is communicated with the liquid storage cylinder (41) through a second liquid pipe (38), a branch pipe (39) is connected to the second liquid pipe (38), the branch pipe (39) is communicated with the liquid storage cylinder (41), a second check valve (6) is connected to the branch pipe (39), the conduction direction of the second check valve (6) points to the liquid storage cylinder (41), a first check valve (4) and a flow limiting valve (5) are connected to one section of the second liquid pipe (38) between the branch pipe (39) and the liquid storage cylinder (41), and the conduction direction of the first check valve (4) points to the ring pipe (17).

10. The paying-off method for a paying-off device of electric wires and cables as claimed in any one of claims 1 to 9, wherein:

the method comprises the following steps: the method comprises the following steps that a wire coil to be paid off is installed on a pay-off reel (12), when the wire coil needs to be paid off, the pay-off reel (12) is driven to pay off through a pay-off mechanism, a damping transmission mechanism is driven to do work on hydraulic oil at the initial stage of starting the pay-off mechanism, and the pay-off mechanism is protected during paying off;

step three: when the stop of the pay-off is interrupted, the inertia impact of the pay-off reel is buffered through the damping transmission mechanism, the locking mechanism is driven by the inertia impact to automatically lock the pay-off reel (12), and the pay-off is stopped.