CN213717479U

CN213717479U - Communication pipeline lead wire distributor

Info

Publication number: CN213717479U
Application number: CN202022560048.1U
Authority: CN
Inventors: 杨忠; 朱明俊; 孙飞龙
Original assignee: Nanjing Amco Communication Engineering Co ltd
Current assignee: Nanjing Amco Communication Engineering Co ltd
Priority date: 2020-11-07
Filing date: 2020-11-07
Publication date: 2021-07-16
Anticipated expiration: 2030-11-07

Abstract

The utility model relates to a communication pipeline lead wire distributor, it includes the mount, rotate the swivel mount of connection on the mount, the push rod of setting in mount one side and the pulley of setting in the mount bottom, it has the lead wire to coil on the swivel mount, still including extending frame and two supports of setting on extending frame relatively, extend the one side that the frame set up on the mount and back to the push rod, be equipped with the roll adjustment subassembly of adjusting the interval between two supports on extending the frame, it has the clean passageway that supplies the lead wire to pass to reserve between two supports, the lateral wall that the support is located clean passageway is equipped with the clean subassembly that is used for clearing up impurity on the lead wire. This application has and replaces the manual work to the impurity of attaching to on the lead wire clearance, and labour saving and time saving has improved work efficiency's effect.

Description

Communication pipeline lead wire distributor

Technical Field

The application relates to the field of threaders, in particular to a communication pipeline lead laying device.

Background

In communication engineering, optical cable laying is an important link of communication system construction, and when optical (electrical) cables or other cables of communication pipelines are laid, the cables are often laid by a threading apparatus.

Chinese patent with publication number CN209071963U discloses a cable traction system, which comprises a threading device and an optical cable tractor, wherein the threading device comprises a fixing frame main body with a side threading position, a lead wound in the fixing frame main body, and a guide tube for guiding the lead, one end of the guide tube is fixedly connected with a threading port of the optical cable tractor, the other end of the guide tube is arranged at the side of the side threading position and connected with the fixing frame main body with the side threading position, and the guide tube is a hard tube; the traction system is good in stability and capable of improving the matching performance of the fixing frame and the optical cable traction machine.

With respect to the related art among the above, the inventors consider that the following drawbacks exist: when using above-mentioned traction system during threading operation, because there is impurity inside the pipeline, lead to easily that the lead wire surface adheres to there is impurity, the back is accomplished in the operation, withdraws the lead wire, needs operating personnel to spend time alone and clears up the impurity on the lead wire, has reduced work efficiency.

SUMMERY OF THE UTILITY MODEL

In order to improve the threading operation and accomplish the back, need the manual work to clear up the impurity that adheres to on the lead wire alone and influence work efficiency's problem, this application provides a communication pipeline lead laying device.

The application provides a communication pipeline lead wire distributor adopts following technical scheme:

the utility model provides a communication pipeline lead wire distributor, includes the mount, rotates swivel mount, the push rod of setting in mount one side and the pulley of setting in the mount bottom of connecting on the mount, it has the lead wire to coil on the swivel mount, still including extending frame and two relative supports that set up on extending the frame, extend the frame and set up on the mount and one side of push rod dorsad, be equipped with the roll adjustment subassembly of adjusting the interval between two supports on extending the frame, two it has the clean passageway that supplies the lead wire to pass to reserve between the support, the lateral wall that the support is located clean passageway is equipped with the clean subassembly that is used for clearing up impurity on the lead wire.

Through adopting above-mentioned technical scheme, the wiring is accomplished the back, retrieves the lead wire, utilizes two supports of roll adjustment subassembly drive to be close to each other for clean subassembly is contradicted on the lateral wall of lead wire, and then along with the recovery to the lead wire, can clean the impurity of attaching to on the lead wire through clean subassembly, can replace the manual work finally to clean the impurity of attaching to on the lead wire, and labour saving and time saving has improved work efficiency.

Optionally, the extension frame includes a tilt column and a platform connected to a higher end of the tilt column, the lower end of the tilt column is connected to the side wall of the fixing frame, a connecting rod is arranged at the bottom of the support, a slider is arranged at an end of the connecting rod far away from the support, a sliding groove is arranged on the upper surface of the platform, the length direction of the sliding groove is perpendicular to the loop direction of the lead, a sealing telescopic ring is arranged at a notch of the sliding groove, the outer ring wall of the sealing telescopic ring is adhesively connected to the groove wall of the sliding groove, and the inner ring wall of the sealing telescopic ring is tightly attached to each other or is attached to the outer wall of.

Through adopting above-mentioned technical scheme, the cooperation of slider and spout plays direction and restriction to the sliding direction of support, utilizes sealed expansion ring, can shutoff spout cell wall and connecting rod lateral wall between the gap, and then can avoid dropping to the spout to the impurity of clearing up out on the lead wire for the slider can stably slide in the spout, thereby can stably adjust the interval between two supports.

Optionally, the distance adjusting assembly comprises a bidirectional screw rod rotatably connected in the sliding groove and a motor driving the bidirectional screw rod to rotate, the side walls of the two sliding blocks are provided with threaded holes, one of the sliding blocks is in threaded connection with one end of the bidirectional screw rod, and the other sliding block is in threaded connection with the other end of the bidirectional screw rod.

Through adopting above-mentioned technical scheme, starter motor drives two-way lead screw and rotates, because the spout plays direction and limiting displacement to sliding of slider, drives two sliders and is close to each other or keep away from each other at the spout, and then can drive two supports and be close to each other or keep away from each other through the connecting rod, and then has realized adjusting the interval between two supports to contradict the cleaning assembly on the lead wire, in order to realize the cleanness to the lead wire.

Optionally, the cleaning assembly comprises an arc plate arranged on the side wall of the support and a plurality of flexible soft brushes uniformly arranged on the inner arc wall of the arc plate, and the flexible soft brushes are all abutted to the outer wall of the lead.

Through adopting above-mentioned technical scheme, along with the recovery to the lead wire, contradict on the lateral wall of lead wire through the soft brush of flexibility, can clean the impurity of adhesion on the lead wire, and then can replace the manual work to clean the lead wire alone, labour saving and time saving has improved work efficiency.

Optionally, the lateral wall of support orientation clean passageway is equipped with the dovetail, the dovetail runs through with the upper surface of support, the outer arc wall of arc is equipped with the forked tail piece that slides in the dovetail, be equipped with the cavity that is linked together with the dovetail in the support, be equipped with the setting element that is used for fixed forked tail piece in the cavity.

Through adopting above-mentioned technical scheme, insert the bottom of dovetail with the forked tail piece from top to bottom, recycle the setting element and fix the forked tail piece in the dovetail, can fix the lateral wall at the support with the arc, make things convenient for personnel's periodic dismouting arc to change flexible soft brush, improved the clean effect to the lead wire.

Optionally, the setting element is including sliding the first serration plate that sets up in the cavity, with second serration plate of first serration plate meshing, the branch that links to each other with first serration plate and cover establish the spring on branch, the lateral wall at the dovetail block is fixed to one side of second serration plate dorsad first serration plate, the lateral wall of support dorsad arc is equipped with the through-hole, the one end that first serration plate was kept away from to branch passes the through-hole and is connected with the handle, the one end of spring links to each other with the inside wall that the support is located the cavity, the other end of spring links to each other with branch.

Through adopting above-mentioned technical scheme, personnel pulling handle, the spring compression, make first serration plate slide to keeping away from the dovetail direction, can insert the dovetail in the dovetail this moment, until when sliding the dovetail to the bottom of dovetail, release the handle, utilize the elasticity restoring force of spring, promote branch and remove, make second serration plate slide to the dovetail direction, when meshing until second serration plate and first serration plate, can fix the dovetail in the dovetail, can fix the lateral wall at the support with the arc.

Optionally, the upper surface of platform just is equipped with two relative piece along self length direction, the top of piece is connected with two direction hoops through the torsional spring is articulated, two articulated one end looks butt is kept away from to the direction hoop two reserve the direction passageway that supplies the lead wire to pass between the relative lateral wall of direction hoop.

Through adopting above-mentioned technical scheme, the combination of piece and direction hoop plays the guide effect to the removal of lead wire, can stably penetrate clean passageway with the lead wire in.

Optionally, the side walls of the two guide hoops close to one side of the rotating frame are respectively provided with cleaning cotton in an adhesive mode, and the cleaning cotton abuts against the side wall of the lead.

Through adopting above-mentioned technical scheme, to the clean lead wire of back of flexible soft brush, get into and be close to between two direction hoops of swivel mount one side, and then utilize clean cotton to clean the lead wire, further improved the clean effect to the lead wire.

In summary, the present application includes at least one of the following beneficial technical effects:

1. the distance adjusting assembly is used for driving the two supports to approach each other, so that the cleaning assembly is abutted against the side wall of the lead, and then along with the recovery of the lead, impurities attached to the lead can be cleaned through the cleaning assembly, and finally the impurities attached to the lead can be cleaned by replacing manpower, so that time and labor are saved, and the working efficiency is improved;

2. after the dovetail block is inserted into the dovetail groove, the dovetail block can be fixed in the dovetail groove by meshing the second serrated plate with the first serrated plate, and then the arc-shaped plate can be fixed on the side wall of the support;

3. the lead wire cleaned by the flexible soft brush enters the space between the two guide hoops on one side close to the rotating frame, and then the lead wire is cleaned by utilizing the cleaning cotton, so that the cleaning effect on the lead wire is further improved.

Drawings

Fig. 1 is a communication pipe lead wire arranging device according to an embodiment of the present application.

Figure 2 is a schematic diagram of a cleaning assembly in the practice of the present application.

Fig. 3 is a schematic sectional view taken along line a-a of fig. 2.

Fig. 4 is an enlarged schematic view of a portion a of fig. 3.

Description of reference numerals: 1. a fixed mount; 2. a rotating frame; 3. a push rod; 4. a pulley; 5. an extension frame; 51. an inclined column; 52. a platform; 6. a support; 7. a distance adjusting component; 71. a bidirectional screw rod; 72. a motor; 73. a threaded hole; 8. cleaning the channel; 9. a connecting rod; 10. a slider; 11. a chute; 12. sealing the telescopic ring; 13. a cleaning assembly; 131. an arc-shaped plate; 132. a flexible soft brush; 14. a dovetail groove; 15. a dovetail block; 16. a cavity; 17. a positioning member; 171. a first serrated plate; 172. a second serrated plate; 173. a strut; 174. a spring; 175. a through hole; 176. a handle; 18. supporting a block; 19. a guide hoop; 20. cleaning cotton; 21. a limiting block; 22. a limiting groove.

Detailed Description

The present application is described in further detail below with reference to figures 1-4.

The embodiment of the application discloses a communication pipeline lead wire distributor. Referring to fig. 1, the laying device comprises a fixing frame 1, a rotating frame 2 is rotatably connected to one side wall of the fixing frame 1, a lead wire is wound in the rotating frame 2, a pulley 4 is arranged at the bottom of the fixing frame 1, a push rod 3 is arranged at one end of the fixing frame 1, a person pushes the push rod 3, and the fixing frame 1 can be pushed to slide to a proper position for wiring operation.

Referring to fig. 1 and 2, an extension frame 5 is arranged on one side of a fixed frame 1, which is opposite to a push rod 3, the extension frame 5 comprises a platform 52 located on one side of the fixed frame 1, two parallel inclined columns 51 are obliquely arranged on one side of the lower surface of the platform 52 towards the ground, the lower ends of the inclined columns 51 are connected with the side wall of the fixed frame 1, the higher ends of the two inclined columns 51 are connected with the platform 52, the length direction of the platform 52 is in the same direction as the loop direction of a lead, two supports 6 are slidably arranged on the platform 52 along the width direction of the platform, a distance adjusting component 7 for adjusting the distance between the two supports 6 is arranged on the platform 52, a cleaning channel 8 for the lead to pass through is reserved between the two supports 6, and a cleaning component 13 for cleaning impurities on the lead is arranged on the; after the wiring is accomplished, pass clean passageway 8 with the lead wire, then utilize two supports 6 of adjusting part drive to be close to each other to suitable distance after, utilize clean subassembly 13 to support the lateral wall at the lead wire, along with the recovery to the lead wire, can clear up the impurity that adheres to on the lead wire through clean subassembly 13, and then can replace the manual work to clear up the impurity that adheres to on the lead wire, labour saving and time saving has improved work efficiency.

Referring to fig. 2 and 3, two supporting blocks 18 are arranged on two sides of the upper surface of the platform 52, the two supporting blocks 18 are oppositely arranged along the length direction of the platform 52, the top ends of the supporting blocks 18 are hinged with guide hoops 19 through torsion springs, the guide hoops 19 are arranged in a semicircular shape, the ends, far away from the hinge joint, of the two guide hoops 19 are mutually abutted, a guide channel is formed between the opposite side walls of the two guide hoops 19 in a surrounding mode and used for a lead to pass through, and the supporting blocks 18 and the guide hoops 19 are combined to play a role in guiding a return wire of the lead so that the lead is stably arranged in the cleaning channel 8 in a penetrating.

In this embodiment, be close to the equal adhesive connection of inner ring wall of two direction hoops 19 on one side of swivel mount 2 and have clean cotton 20, clean cotton 20 contradicts at the lateral wall of lead wire, along with the recovery to the lead wire, through the clean lead wire entering of clean subassembly 13 between two direction hoops 19 that are close to swivel mount 2 one side, and then utilize clean cotton 20 in order to realize the secondary cleanness to the lead wire, can clean the impurity of attaching to on the lead wire, further strengthened the clean effect to the lead wire.

Referring to fig. 2 and 3, the upper surface of the platform 52 is provided with a sliding groove 11 along the width direction, the lower surfaces of the two supports 6 are provided with connecting rods 9, the connecting rods 9 are vertically arranged, the bottom end of each connecting rod 9 is connected with a sliding block 10, each sliding block 10 slides in the corresponding sliding groove 11, and the sliding blocks 10 and the sliding grooves 11 are matched to guide and limit the sliding of the supports 6.

In this embodiment, the lateral wall that spout 11 and its notch are relative is equipped with sealed expansion ring 12, the cross section of sealed expansion ring 12 is the rectangle, the outer rampart of sealed expansion ring 12 is fixed on the cell wall of spout 11, the outer wall at connecting rod 9 is hugged closely to the partly inner ring lateral wall of sealed expansion ring 12, the rampart is closely laminated in another part of sealed expansion ring 12, because sealed expansion ring 12 has good leakproofness and elastic restoring force, along with the sliding of connecting rod 9, utilize the stable elasticity restoring force of sealed expansion ring 12, can block up the gap between 11 cell walls of spout and the connecting rod 9 lateral wall, avoid clean subassembly 13 in clean process, impurity drops to in the spout 11, influence the sliding of slider 10 in spout 11.

Referring to fig. 3, the distance adjusting assembly 7 includes a bidirectional screw rod 71 rotatably connected in the chute 11, the axial direction of the bidirectional screw rod 71 is the same as the axial direction of the chute 11, a motor 72 is installed on one side wall of the platform 52, the motor 72 is a micro motor 72, a driving shaft of the motor 72 extends into the chute 11 and is connected with one end of the bidirectional screw rod 71, the other end of the bidirectional screw rod 71 is rotatably connected with a chute wall of the chute 11, the side walls of the two sliders 10 are respectively provided with a threaded hole 73, one of the sliders 10 is in threaded connection with one end of the bidirectional screw rod 71, and the other slider 10 is in threaded connection with the other end of; the starter motor 72, because the spout 11 plays direction and limiting displacement to the sliding of slider 10, and then drive two sliders 10 and be close to each other or keep away from each other in spout 11, to the interval regulation between two supports 6, after two supports 6 are close to suitable position each other, utilize clean subassembly 13 to clear up the impurity of attaching to on the lead wire.

Referring to fig. 3, two groups of cleaning assemblies 13 are arranged on the side walls of the two supports 6, respectively, wherein one group of cleaning assemblies 13 includes an arc-shaped plate 131, the outer arc wall of the arc-shaped plate 131 is installed on the side wall of the support 6, the inner arc wall of the arc-shaped plate 131 faces the lead, and the inner arc wall of the arc-shaped plate 131 is provided with a plurality of flexible soft brushes 132; the cleaning mode has a simple structure and is convenient to operate.

Referring to fig. 3 and 4, a dovetail groove 14 is formed in a side wall of the support 6 facing the lead, the dovetail groove 14 penetrates through an upper surface of the support 6, a dovetail block 15 is arranged on an outer arc wall of the arc-shaped plate 131, the dovetail block 15 is inserted into the dovetail groove 14 from high to low, the arc-shaped plate 131 can be installed on the side wall of the support 6, in order to improve stability of the arc-shaped plate 131 on the side wall of the support 6, a cavity 16 is formed in the support 6, the cavity 16 is communicated with the dovetail groove 14, and a positioning piece 17 for fixing the dovetail block 15 is arranged in the cavity 16, so that the arc-shaped plate 131 is stably fixed on the side wall; because the phenomenon of curling up can take place after flexible soft brush 132 uses for a long time, the cooperation of dovetail 14 and forked tail piece 15 has realized dismantling between arc 131 and the support 6 lateral wall and has been connected, makes things convenient for personnel to change flexible soft brush 132 regularly, has improved the clean effect to the lead wire.

Referring to fig. 3, the positioning member 17 includes a supporting rod 173 oriented in the same direction as the width direction of the platform 52, a spring 174 is sleeved at one end of the supporting rod 173, one end of the spring 174 is fixed at an inner side wall of the supporting seat 6 located in the cavity 16, the other end of the spring 174 is connected with a side wall of the supporting rod 173, a through hole 175 is formed in a side wall of the supporting seat 6 facing away from the arc-shaped plate 131, one end of the supporting rod 173 located in the spring 174 penetrates through the through hole 175 and is connected with a handle 176, one end of the supporting rod 173 away from the spring 174 is connected with a first serration plate 171, a limiting block 21 is arranged at the bottom of the first serration plate 171, an inner bottom wall of the supporting seat 6 located in the cavity 16 is provided with a limiting groove 22 for sliding movement of the limiting block 21, the length direction.

A second serrated plate 172 is fixedly arranged on the side wall of the dovetail block 15 facing the cavity 16, the second serrated plate 172 is opposite to and meshed with the first serrated plate 171, when the dovetail block is installed, a person pulls the handle 176, the spring 174 is compressed, the first serrated plate 171 slides in the direction away from the dovetail groove 14, at the moment, the dovetail block 15 can be inserted into the dovetail groove 14, until the dovetail block 15 slides to the bottom of the dovetail groove 14, the handle 176 is released, the support rod 173 is pushed to move by the elastic restoring force of the spring 174, the second serrated plate 172 slides in the direction of the dovetail groove 14, and until the second serrated plate 172 is meshed with the first serrated plate 171, the dovetail block 15 can be fixed in the dovetail groove 14, so that the arc-shaped plate 131 is fixed on the side wall of the support 6; this locate mode, simple structure, easy to assemble to the personnel regularly dismouting, change flexible soft brush 132, improved the clean effect to the lead wire.

The communication pipeline lead wire distributor in the embodiment of the application has the implementation principle that: firstly pulling the handle 176, pulling the support rod 173 outwards, further compressing the spring 174, so that the first sawtooth plate 171 slides towards the direction away from the dovetail groove 14, at the moment, sequentially inserting the dovetail block 15 into the dovetail groove 14 from top to bottom, then pushing the handle 176, sliding the first sawtooth plate 171 towards the second sawtooth plate 172 through the support rod 173, until the first sawtooth plate 171 is meshed with the second sawtooth plate 172, keeping the position of the support rod 173 stable by using the elastic force of the spring 174, further stably meshing the first sawtooth plate 171 with the second sawtooth plate 172, further fixing the dovetail block 15 in the dovetail groove 14, so as to install the arc-shaped plate 131 on the side wall of the support 6.

After the wiring is accomplished, retrieve the lead wire, cooperation through a piece 18 and direction hoop 19, play the guide effect to the recovery direction of lead wire, and simultaneously, starter motor 72, drive two-way lead screw 71 and rotate, because spout 11 plays direction and limiting displacement to the sliding of slider 10, drive two sliders 10 and be close to each other in spout 11, make flexible soft brush 132 contradict on the lateral wall of lead wire, and then along with the return wire of lead wire, can clean the impurity of adhesion on the lead wire through flexible soft brush 132, lead wire after cleaning gets into between two direction hoops 19 that are close to swivel mount 2 one side, utilize clean cotton 20 to clean the surface of lead wire, further improved the clean effect to the lead wire, can finally replace the manual work to clear up the impurity of attaching to on the lead wire, time and labor saving, and processing efficiency is improved.

The above embodiments are preferred embodiments of the present application, and the protection scope of the present application is not limited by the above embodiments, so: all equivalent changes made according to the structure, shape and principle of the present application shall be covered by the protection scope of the present application.

Claims

1. The utility model provides a communication pipeline lead wire distributor, includes mount (1), rotates swivel mount (2) of connection on mount (1), sets up push rod (3) and pulley (4) of setting in mount (1) bottom in mount (1) one side, it has lead wire, its characterized in that to coil on swivel mount (2): still including extending frame (5) and two relative support (6) of setting on extending frame (5), extend frame (5) and set up on mount (1) and one side of push rod (3) dorsad, be equipped with on extending frame (5) and adjust roll adjustment subassembly (7) of interval between two support (6), two it has clean passageway (8) that supply the lead wire to pass to reserve between support (6), the lateral wall that support (6) are located clean passageway (8) is equipped with clean subassembly (13) that are used for clearing up impurity on the lead wire.

2. A communication conduit lead wire organizer according to claim 1, wherein: the extension frame (5) comprises an inclined column (51) and a platform (52) connected with the higher end of the inclined column (51), the lower end of the inclined column (51) is connected with the side wall of the fixing frame (1), a connecting rod (9) is arranged at the bottom of the support (6), a sliding block (10) is arranged at one end, away from the support (6), of the connecting rod (9), a sliding groove (11) is formed in the upper surface of the platform (52), the length direction of the sliding groove (11) is perpendicular to the loop direction of the lead, a sealing telescopic ring (12) is arranged at the notch of the sliding groove (11), the outer ring wall of the sealing telescopic ring (12) is connected to the groove wall of the sliding groove (11) in an adhesive mode, and the inner ring wall of the sealing telescopic ring (12) is tightly attached to each other or attached to the outer wall of the connecting rod.

3. A communication conduit lead wire organizer according to claim 2, wherein: the distance adjusting assembly (7) comprises a bidirectional screw rod (71) rotatably connected in the sliding groove (11) and a motor (72) driving the bidirectional screw rod (71) to rotate, two threaded holes (73) are formed in the side wall of each sliding block (10), one of the threaded holes is connected with one end of each sliding block (10) and the other end of each bidirectional screw rod (71) in a threaded mode, and the other end of each sliding block (10) is connected with the other end of each bidirectional screw rod (71) in a threaded mode.

4. A communication conduit lead wire organizer according to claim 1, wherein: clean subassembly (13) are including installing arc (131) on support (6) lateral wall and a plurality of flexible soft brush (132) of equipartition setting on arc (131) inner arc wall, a plurality of flexible soft brush (132) all contradict with the outer wall of lead wire.

5. The communication conduit lead wire organizer of claim 4, wherein: the utility model discloses a dovetail piece of cleaning device, including support (6), support (6) and support (6), the lateral wall towards clean passageway (8) is equipped with dovetail (14), dovetail (14) run through with the upper surface of support (6), the outer arc wall of arc (131) is equipped with dovetail block (15) that slide in dovetail (14), be equipped with cavity (16) that are linked together with dovetail (14) in support (6), be equipped with setting element (17) that are used for fixed dovetail block (15) in cavity (16).

6. The communication conduit lead wire organizer of claim 5, wherein: the utility model discloses a set up cavity (16) and support (131) in the cavity, setting element (17) including sliding first serration plate (171) that sets up in cavity (16), second serration plate (172) with first serration plate (171) meshing, branch (173) and the cover that establish spring (174) on branch (173) that link to each other with first serration plate (171), the lateral wall at dovetail block (15) is fixed to one side of second serration plate (172) first serration plate (171) dorsad, the lateral wall of support (6) arc (131) dorsad is equipped with through-hole (175), the one end that first serration plate (171) were kept away from in branch (173) passes through-hole (175) and is connected with handle (176), the one end of spring (174) links to each other with the inside wall that support (6) are located cavity (16), the other end and branch (173) of spring (174) link to each other.

7. A communication conduit lead wire organizer according to claim 2, wherein: the upper surface of platform (52) just is equipped with two relative piece (18) of propping up along self length direction, the top of propping up piece (18) is connected with two direction hoops (19), two through the torsional spring is articulated two articulated one end looks butt is kept away from to direction hoop (19) is reserved between the relative lateral wall of direction hoop (19) has the direction passageway that supplies the lead wire to pass.

8. A communication conduit lead applicator as recited in claim 7, wherein: the side walls of the two guide hoops (19) close to one side of the rotating frame (2) are respectively provided with cleaning cotton (20) in an adhesive mode, and the cleaning cotton (20) abuts against the side wall of the lead.