CN218174240U

CN218174240U - Low-voltage cable discharges device

Info

Publication number: CN218174240U
Application number: CN202221520910.9U
Authority: CN
Inventors: 张明华; 杨蔚; 王健; 栾游; 李维维
Original assignee: Yancheng Power Supply Co of State Grid Jiangsu Electric Power Co Ltd; Dongtai Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Current assignee: Yancheng Power Supply Co of State Grid Jiangsu Electric Power Co Ltd; Dongtai Power Supply Co of State Grid Jiangsu Electric Power Co Ltd
Priority date: 2022-06-16
Filing date: 2022-06-16
Publication date: 2022-12-30
Anticipated expiration: 2032-06-16

Abstract

The utility model discloses a low tension cable discharges device, including U-shaped bottom plate, first limiting plate, first through-hole, first spacing screw, second limiting plate, second through-hole, pay-off pivot, pull ring, stop nut, first get traditional thread binding putting, displacement sensor, electric spark detector, tension induction system, second get traditional thread binding putting, the U-shaped mouth of U-shaped bottom plate sets up down, and U-shaped bottom plate up end front end is equipped with first limiting plate, and U-shaped bottom plate up end rear end is equipped with the second limiting plate, and first limiting plate, second limiting plate are parallel around, and the terminal surface is equipped with first through-hole before the first limiting plate. The utility model has the advantages of simple structure and reasonable design, can make the cable according to the accurate unwrapping wire of actual demand, avoid the unwrapping wire unnecessary and then receive the line waste time again, improve work efficiency, can be simultaneously at unwrapping wire in-process synchronous detection cable epidermis state, make the staff in time discover and repair the damage of cable epidermis.

Description

Low-voltage cable discharges device

[ technical field ] A method for producing a semiconductor device

The utility model relates to a cable discharges technical field of device, especially low tension cable discharges technical field of device.

[ background of the invention ]

During the installation of the power system, there is a lot of cabling work. At present in cable laying work, adopt the manpower to pull operation cable drum or cable support usually and carry out unwrapping wire or receive the line, this in-process needs the work of a large amount of high strength, and work efficiency is lower, and the cable probably leads to the damage because of the transportation is improper in the transportation moreover, and artifical unwrapping wire is difficult for in time discovering the damage of cable epidermis.

[ Utility model ] content

The utility model aims at solving the problem among the prior art, provide a low tension cable and release device, can make the cable according to the accurate unwrapping wire of actual demand, avoid the unwrapping wire unnecessary and then receive the line waste time again, improve work efficiency, can be simultaneously at unwrapping wire in-process synchronous detection cable epidermis state, make the staff in time discover and repair the damage of cable epidermis.

In order to achieve the purpose, the utility model provides a low-voltage cable discharge device, which comprises a U-shaped bottom plate, a first limiting plate, a first through hole, a first limiting screw hole, a second limiting plate, a second through hole, a feeding rotating shaft, a pull ring, a limiting nut, a first wire taking device, a displacement sensor, an electric spark detector, a tension sensing device and a second wire taking device, wherein the U-shaped opening of the U-shaped bottom plate is arranged downwards, the front end of the upper end surface of the U-shaped bottom plate is provided with the first limiting plate, the rear end of the upper end surface of the U-shaped bottom plate is provided with the second limiting plate, the front end surface of the first limiting plate and the front end of the second limiting plate are parallel, the front end surface of the first limiting plate is provided with the first through hole, the front end surface of the first through hole is provided with a plurality of first limiting screw holes, the front end surface of the second limiting plate is provided with the second through hole, the wire taking device comprises a first through hole, a second through hole, a coaxial feeding rotating shaft is arranged in the first through hole, the rear end of the feeding rotating shaft extends into the second through hole, a pull ring is arranged at the front end of the feeding rotating shaft and is hinged to the feeding rotating shaft, a plurality of limiting nuts are arranged on the side faces of the pull ring, the plurality of limiting nuts correspond to the first limiting screw holes one by one, a first wire taking device is arranged on the upper end face of a U-shaped bottom plate, a displacement sensor, an electric spark detector, a tension sensing device and a second wire taking device, the first wire taking device, the displacement sensor, the electric spark detector, the tension sensing device and the second wire taking device are arranged on a first limiting plate and a second limiting plate, and the first wire taking device, the displacement sensor, the electric spark detector, the tension sensing device and the second wire taking device are sequentially arranged from right to left.

Preferably, the upper end face of the U-shaped bottom plate is provided with a lifting device, the lifting device is arranged between the first limiting plate and the second limiting plate, the V-shaped supporting plate is arranged on the upper end face of the lifting device, the upper end face of the V-shaped supporting plate is provided with a V-shaped groove, the axis of the V-shaped groove is parallel to the axis of the feeding rotating shaft, the axis of the V-shaped groove and the axis of the feeding rotating shaft are coplanar on a vertical plane, and the right side of the lifting device is provided with a feeding assisting plate arranged below the right side.

Preferably, the first wire taking device and the second wire taking device have the same structure, and are bilaterally symmetrical, the second wire taking device comprises a first vertical plate, a first electric control slide rail, a first electric control slide block, a second vertical plate, a second electric control slide rail, a second electric control slide block, a connecting rod, a pressure ring, a first anti-slip rubber ring, a servo motor, a rotating shaft, a wire taking wheel, an annular wire groove, an annular pressure sensing device and a second anti-slip rubber ring, the front end of the upper end surface of the U-shaped bottom plate is provided with the first vertical plate, the rear end surface of the first vertical plate is provided with the first electric control slide rail which is vertically arranged, the first electric control slide block is arranged in the first electric control slide rail, the rear end of the upper end surface of the U-shaped bottom plate is provided with the second vertical plate, the rear end surface of the second vertical plate is provided with the second electric control slide rail which is vertically arranged, and the second electric control slide block is arranged in the second electric control slide rail, the first electric control sliding block and the second electric control sliding block are symmetrical front and back, a connecting rod is connected between the first electric control sliding block and the second electric control sliding block, a coaxial pressing ring is sleeved at the middle of the connecting rod, the connecting rod is hinged with an inner hole of the pressing ring, a first anti-slip rubber ring is arranged on the outer annular wall of the pressing ring, a servo motor is arranged on the rear end face of the second vertical plate, the servo motor is arranged below the connecting rod, a rotating shaft is arranged at the front end of the servo motor, the front end of the rotating shaft sequentially penetrates through the second vertical plate and the first vertical plate, the rotating shaft is hinged with the second vertical plate and the first vertical plate, a coaxial wire taking wheel is arranged in the middle of the rotating shaft, a coaxial annular wire groove is formed in the side wall of the wire taking wheel, a coaxial annular pressure sensing device is arranged at the bottom of the annular wire groove, a second anti-slip rubber ring is arranged on the outer annular wall of the annular wire sensing device, the pressing ring radially extends into the annular wire groove, and the axis of the pressing ring is parallel to the axis of the wire taking wheel.

Preferably, the tension sensing device comprises a support, a wire passing wheel, a second annular wire groove, a second annular pressure sensing device, a third anti-skidding rubber ring and an alarm, the support is arranged on the upper end face of the U-shaped bottom plate, the wire passing wheel is arranged at the upper end of the support and is hinged to the support, the axis of the wire passing wheel is parallel to the axis of the wire taking wheel, the wire passing wheel is arranged below the wire taking wheel, the coaxial second annular wire groove is formed in the side wall of the wire passing wheel, the second annular pressure sensing device is arranged at the bottom of the second annular wire groove, the coaxial third anti-skidding rubber ring is arranged on the outer annular wall of the second annular pressure sensing device, and the alarm is arranged at the top end of the support.

Preferably, a brake is arranged on the front end face of the second limit plate.

Preferably, a PLC controller is arranged on the front end face of the first limiting plate, and the first wire taking device, the displacement sensor, the electric spark detector, the tension sensing device, the second wire taking device, the brake and the lifting device are connected with the PLC controller.

The utility model has the advantages that: the utility model has the advantages of simple structure and reasonable design, can make the cable pay off accurately according to the actual demand, avoid paying off unnecessary and then receive the line again and waste time, improve work efficiency, simultaneously can detect the cable epidermis state synchronously in the paying off process, make the staff can discover in time and repair the damage of cable epidermis; by arranging the annular pressure sensing device, the pressure of the pressure ring and the wire taking wheel on the cable can be determined, and the cable can be effectively transported; by arranging the electric spark detector, the damage of the cable skin can be detected in time, and the safety of the cable after installation is improved; by arranging the displacement sensor and the servo motor, the fixed-length paying-off of the cable can be controlled, and the working efficiency is improved; through setting up the stopper, can carry out the speed limit to the drum, prevent that the drum from letting out too much cable because of inertia.

The features and advantages of the present invention will be described in detail by embodiments with reference to the accompanying drawings.

[ description of the drawings ]

Fig. 1 is a schematic structural view of a front view portion of a low-voltage cable discharge device according to the present invention;

fig. 2 is a schematic structural view of a front view portion of a low-voltage cable discharge device of the present invention;

fig. 3 is a schematic structural view of a right-side view of a low-voltage cable dispensing device according to the present invention;

fig. 4 is a structural schematic diagram of a right-side view portion of the low-voltage cable discharge device of the present invention.

[ detailed description ] embodiments

Referring to fig. 1, 2, 3 and 4, the utility model relates to a low-voltage cable discharge device, which comprises a U-shaped bottom plate 1, a first limit plate 11, a first through hole 111, a first limit screw hole 112, a second limit plate 12, a second through hole 121, a feeding rotating shaft 2, a pull ring 21, a limit nut 211, a first wire taking device 3, a displacement sensor 4, an electric spark detector 5, a tension sensing device 6 and a second wire taking device 7, the U-shaped opening of the U-shaped bottom plate 1 is arranged downwards, the front end of the upper end surface of the U-shaped bottom plate 1 is provided with a first limiting plate 11, the rear end of the upper end surface of the U-shaped bottom plate 1 is provided with a second limiting plate 12, the first limiting plate 11 and the second limiting plate 12 are parallel in front and back, the front end surface of the first limiting plate 11 is provided with a first through hole 111, the front end surface of the first through hole 111 is provided with a plurality of first limiting screw holes 112, the front end surface of the second limiting plate 12 is provided with a second through hole 121, the first through hole 111 and the second through hole 121 are coaxial, a coaxial feeding rotating shaft 2 is arranged in the first through hole 111, the rear end of the feeding rotating shaft 2 extends into the second through hole 121, the front end of the feeding rotating shaft 2 is provided with a pull ring 21, and the pull ring 21 is hinged with the feeding rotating shaft 2, the pull ring 21 side is equipped with a plurality of stop nut 211, the first spacing screw 112 one-to-one of a plurality of, 1 up end of U-shaped bottom plate is equipped with first get traditional thread binding putting 3, displacement sensor 4, electric spark detector 5, tension induction system 6, second get traditional thread binding putting 7, first get traditional thread binding putting 3, displacement sensor 4, electric spark detector 5, tension induction system 6, second get traditional thread binding putting 7 and all establish at first limiting

plate

11, 12 left sides of second limiting plate, follow right side left side and be first get traditional thread binding putting 3 in proper order, displacement sensor 4, electric spark detector 5, tension induction system 6, second get traditional thread binding putting 7.

Wherein, 1 up end of U-shaped bottom plate is equipped with elevating gear 201, and elevating gear 201 establishes between first limiting plate 11, second limiting plate 12, and V-arrangement layer board 202 is established at elevating gear 201 up end, and V-arrangement layer board 202 up end is equipped with the V-arrangement groove, and the axis of V-arrangement groove is parallel with 2 axes of pay-off pivot and the axis of V-arrangement groove is coplanar in the vertical plane with 2 axes of pay-off pivot, and elevating gear 201 right side is equipped with the material loading helping hand board 203 that the right side below set up.

Wherein the first wire taking device 3 and the second wire taking device 7 have the same structure, the first wire taking device 3 and the second wire taking device 7 are bilaterally symmetrical, the second wire taking device 7 comprises a first vertical plate 71, a first electric control slide rail 7101, a first electric control slide block 7102, a second vertical plate 72, a second electric control slide rail 7201, a second electric control slide block 7202, a connecting rod 74, a press ring 740, a first anti-slip rubber ring 741, a servo motor 734, a rotating shaft 73, a wire taking wheel 730, an annular wire casing 731, an annular pressure sensing device 732 and a second anti-slip rubber ring 733, the first vertical plate 71 is arranged at the front end of the upper end face of the U-shaped bottom plate 1, the first electric control slide rail 7101 is vertically arranged, the first electric control slide block 7102 is arranged in the first electric control slide rail 7101, the second vertical plate 72 is arranged at the rear end of the upper end face of the U-shaped bottom plate 1, the second electric control slide rail 7201 is vertically arranged at the rear end face of the second vertical plate 72, a second electric control slide block 7202 is arranged in the second electric control slide rail 7201, the first electric control slide block 7102 and the second electric control slide block 7202 are symmetrical front and back, a connecting rod 74 is connected between the first electric control slide block 7102 and the second electric control slide block 7202, a coaxial press ring 740 is sleeved in the middle of the connecting rod 74, the connecting rod 74 is hinged with an inner hole of the press ring 740, a first anti-skid rubber ring 741 which is coaxial is arranged on the outer annular wall of the press ring 740, a servo motor 734 is arranged on the rear end surface of the second riser 72, the servo motor 734 is arranged below the connecting rod 74, a rotating shaft 73 is arranged at the front end of the servo motor 734, the front end of the rotating shaft 73 sequentially penetrates through the second riser 72 and the first riser 71, the rotating shaft 73 is hinged with the second riser 72 and the first riser 71, a coaxial wire taking wheel 730 is arranged in the middle of the rotating shaft 73, a coaxial annular wire groove 731 is arranged on the side wall of the wire taking wheel 730, a coaxial annular pressure induction device 732 is arranged at the bottom of the inner groove 731, a coaxial annular pressure induction device 732, a coaxial second anti-skid rubber ring 733 is arranged on the outer annular wall, the pressing ring 740 radially extends into the annular wire groove 731, and the axis of the pressing ring 740 is parallel to the axis of the wire taking wheel 730.

The tension sensing device 6 comprises a support 61, a wire passing wheel 62, a second annular wire groove 621, a second annular pressure sensing device 622, a third anti-slip rubber ring 623 and an alarm 60, wherein the support 61 is arranged on the upper end face of the U-shaped bottom plate 1, the wire passing wheel 62 is arranged at the upper end of the support 61, the wire passing wheel 62 is hinged to the support 61, the axis of the wire passing wheel 62 is parallel to the axis of the wire taking wheel 730, the wire passing wheel 62 is arranged below the wire taking wheel 730, the coaxial second annular wire groove 621 is arranged on the side wall of the wire passing wheel 62, the second annular pressure sensing device 622 is arranged at the bottom of the second annular wire groove 621, the coaxial third anti-slip rubber ring 623 is arranged on the outer annular wall of the second annular pressure sensing device 622, and the alarm 60 is arranged at the top end of the support 61.

And a brake 20 is arranged on the front end surface of the second limit plate 12.

The front end face of the first limiting plate 11 is provided with a PLC (programmable logic controller) 8, and the first wire taking device 3, the displacement sensor 4, the electric spark detector 5, the tension sensing device 6, the second wire taking device 7, the brake 20 and the lifting device 201 are all connected with the PLC 8.

The utility model discloses the working process:

in the working process of the low-voltage cable discharge device, the PLC 8 controls the orderly operation of the first wire taking device 3, the displacement sensor 4, the electric spark detector 5, the tension sensing device 6, the second wire taking device 7, the brake 20 and the lifting device 201;

the first step is as follows: pulling the pull ring 21 to pull the feeding rotating shaft 2 out of the first through hole 111 and the second through hole 121;

the second step is that: the wire coil is sent into a V-shaped groove on the upper end surface of the V-shaped supporting plate 202 and can be sent by a crane or other machines or pushed manually along the feeding assisting plate 203;

the third step: the lifting device 201 ascends, the V-shaped supporting plate 202 supports the wire coil to move upwards, and the inner hole of the wire coil is coaxial with the first through hole 111 and the second through hole 121;

the fourth step: the feeding rotating shaft 2 is reset, and the rear end of the feeding rotating shaft 2 sequentially penetrates through the first through hole 111, the inner hole of the wire coil and the second through hole 121;

the fifth step: the pull ring 21 is rotated to enable the plurality of limiting nuts 211 and the plurality of first limiting screw holes 112 to correspond to one another, then the limiting nuts 211 and the first limiting screw holes 112 are fixed to one another through bolts, and therefore the pull ring 21 is limited, and the feeding rotating shaft 2 is limited;

and a sixth step: the head end of a cable on a wire coil sequentially passes through a first wire taking device 3, a displacement sensor 4, an electric spark detector 5, a tension induction device 6 and a second wire taking device 7, the cable passes through a pressing ring 740 and a wire taking wheel 730, the pressing ring 740 presses the cable in an annular wire groove 731, and the cable passes through the lower end of the second annular wire groove 621;

the seventh step: the vertical positions of the first electric control sliding block 7102 and the second electric control sliding block 7202 are synchronously adjusted through pressure data detected by the annular pressure sensing device 732, so that the pressing ring 740 presses the cable in the annular wire groove 731 with proper force, and the running conditions of the first wire taking device 3 and the second wire taking device 7 are adjusted through the pressure data detected by the second annular pressure sensing device 622, so that the cable is pressed on the lower end face of the third anti-skidding rubber ring 623 with proper pressure;

eighth step: the first wire taking device 3 and the second wire taking device 7 synchronously operate to take out the cable on the wire coil, wherein the cable taking length is determined according to the displacement sensor 4, the state of the skin of the cable is detected according to the electric spark detector 5, if the electric spark detector 5 detects that the skin of the cable is damaged, the first wire taking device 3 and the second wire taking device 7 cooperate with the displacement sensor 4 to transport the damaged end of the cable to a position between the tension sensing device 6 and the second wire taking device 7, then the first wire taking device 3 and the second wire taking device 7 stop operating, meanwhile, the alarm 60 starts to give an alarm, and then a worker handles the fault.

The utility model has the advantages of simple structure and reasonable design, can make the cable pay off accurately according to the actual demand, avoid paying off unnecessary and then receive the line again and waste time, improve work efficiency, simultaneously can detect the cable epidermis state synchronously in the paying off process, make the staff can discover in time and repair the damage of cable epidermis; by arranging the annular pressure sensing device 732, the pressure of the pressure ring 740 and the wire taking wheel 730 on the cable can be determined, and the cable can be effectively transported; by arranging the electric spark detector 5, the damage of the cable skin can be detected in time, and the safety of the cable after installation is improved; the displacement sensor 4 and the servo motor 734 are arranged, so that the fixed-length paying-off of the cable can be controlled, and the working efficiency is improved; by arranging the brake 20, the speed of the wire coil can be limited, and excessive cables are prevented from being released by the wire coil due to inertia.

The above-mentioned embodiment is right the utility model discloses an explanation, it is not right the utility model discloses a limited, any right the scheme after the simple transform of the utility model all belongs to the protection scope of the utility model.

Claims

1. A low-voltage cable dispensing device, characterized in that: comprises a U-shaped bottom plate (1), a first limiting plate (11), a first through hole (111), a first limiting screw hole (112), a second limiting plate (12), a second through hole (121), a feeding rotating shaft (2), a pull ring (21), a limiting nut (211), a first wire taking device (3), a displacement sensor (4), an electric spark detector (5), a tension sensing device (6) and a second wire taking device (7), wherein the U-shaped opening of the U-shaped bottom plate (1) is arranged downwards, the front end of the upper end surface of the U-shaped bottom plate (1) is provided with the first limiting plate (11), the rear end of the upper end surface of the U-shaped bottom plate (1) is provided with the second limiting plate (12), the first limiting plate (11) and the second limiting plate (12) are parallel from front to back, the front end surface of the first limiting plate (11) is provided with the first through hole (111), the front end surface of the first through hole (111) is provided with a plurality of first limiting screw holes (112), the front end surface of the second limiting plate (12) is provided with the second through hole (121), the first through hole (111) and the second through hole (121), the feeding rotating shaft (2) is arranged in the first through hole (111), the feeding rotating shaft (111) is hinged with the feeding rotating shaft (21), the feeding rotating shaft (2), the front end (21) and the feeding rotating shaft (21), the pull ring (21) side is equipped with a plurality of stop nut (211), the first spacing screw hole of a plurality of (112) one-to-one, U-shaped bottom plate (1) up end is equipped with first wire taking device (3), displacement sensor (4), electric spark detector (5), tension induction system (6), second wire taking device (7), first wire taking device (3), displacement sensor (4), electric spark detector (5), tension induction system (6), second wire taking device (7) all establish at first limiting plate (11), second limiting plate (12) left side, from the right side to the left side in proper order be first wire taking device (3), displacement sensor (4), electric spark detector (5), tension induction system (6), second wire taking device (7).

2. A low-voltage cable dispensing apparatus as claimed in claim 1, wherein: u-shaped bottom plate (1) up end is equipped with elevating gear (201), establish between first limiting plate (11), second limiting plate (12) elevating gear (201), establish elevating gear (201) up end V-arrangement layer board (202), V-arrangement layer board (202) up end is equipped with the V-arrangement groove, the axis and the parallel and axis and the feeding pivot (2) axis coplane in vertical face in V-arrangement groove of feeding pivot (2) axis in the V-arrangement groove, elevating gear (201) right side is equipped with material loading helping hand board (203) that the right side below set up.

3. A low-voltage cable dispensing apparatus as claimed in claim 1, wherein: the first wire taking device (3) and the second wire taking device (7) have the same structure, the first wire taking device (3) and the second wire taking device (7) are bilaterally symmetrical, the second wire taking device (7) comprises a first vertical plate (71), a first electric control slide rail (7101), a first electric control slide block (7102), a second vertical plate (72), a second electric control slide rail (7201), a second electric control slide block (7202), a connecting rod (74), a pressing ring (740), a first anti-skid rubber ring (741), a servo motor (734), a rotating shaft (73), a wire taking wheel (730), an annular wire groove (731), an annular pressure sensing device (732) and a second anti-skid rubber ring (733), U-shaped bottom plate (1) up end front end is equipped with first riser (71), first riser (71) rear end face is equipped with first automatically controlled slide rail (7101) of vertical setting, be equipped with first automatically controlled slider (7102) in first automatically controlled slide rail (7101), U-shaped bottom plate (1) up end rear end is equipped with second riser (72), second riser (72) rear end face is equipped with the automatically controlled slide rail of second (7201) of vertical setting, be equipped with the automatically controlled slider of second (7202) in the automatically controlled slide rail of second (7201), first automatically controlled slider (7102), the automatically controlled slider of second (7202) longitudinal symmetry, first automatically controlled slider (7102), even there is connecting rod (74) between second automatically controlled slider (7202), connecting rod (74) middle part cover has coaxial clamping ring (740), connecting rod (74) and clamping ring (740) hole are articulated, clamping ring (740) outer rampart is equipped with coaxial first anti-skidding rubber circle (741), second riser (72) rear end face is equipped with servo motor (734), servo motor (734) are established in connecting rod (74) below, servo motor (734) front end is equipped with pivot (73), pivot (73) front end passes second riser (72) in proper order, first riser (71), pivot (73) and second riser (72), first riser (71) are articulated, pivot (73) middle part is equipped with coaxial line taking wheel (730), line taking wheel (730) lateral wall is equipped with coaxial annular wire casing (731), be equipped with coaxial annular pressure induction system (732) at the bottom of annular wire casing (731), annular pressure induction system (732) outer rampart is equipped with coaxial second anti-skidding rubber circle (733), clamping ring (740) radially stretches into annular wire casing (731), parallel axis (740) of clamping ring (740).

4. A low-voltage cable dispensing apparatus as claimed in claim 1, wherein: the tension sensing device (6) comprises a support (61), a line passing wheel (62), a second annular line groove (621), a second annular pressure sensing device (622), a third anti-skidding rubber ring (623) and an alarm (60), wherein the support (61) is arranged on the upper end face of the U-shaped bottom plate (1), the line passing wheel (62) is arranged at the upper end of the support (61), the line passing wheel (62) is hinged to the support (61), the axis of the line passing wheel (62) is parallel to the axis of the line taking wheel (730), the line passing wheel (62) is arranged below the line taking wheel (730), the side wall of the line passing wheel (62) is provided with the coaxial second annular line groove (621), the bottom of the second annular line groove (621) is provided with the second annular pressure sensing device (622), the outer annular wall of the second annular pressure sensing device (622) is provided with the coaxial third anti-skidding rubber ring (623), and the alarm (60) is arranged at the top end of the support (61).

5. A low-voltage cable dispensing apparatus as claimed in claim 1, wherein: and a brake (20) is arranged on the front end face of the second limit plate (12).

6. A low-voltage cable dispensing apparatus as claimed in claim 1, wherein: the wire drawing device is characterized in that a PLC (programmable logic controller) controller (8) is arranged on the front end face of the first limiting plate (11), and the first wire drawing device (3), the displacement sensor (4), the electric spark detector (5), the tension sensing device (6), the second wire drawing device (7), the brake (20) and the lifting device (201) are all connected with the PLC controller (8).