CN103578654A - Tension control device of stranding machine - Google Patents
Tension control device of stranding machine Download PDFInfo
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- CN103578654A CN103578654A CN201310494186.6A CN201310494186A CN103578654A CN 103578654 A CN103578654 A CN 103578654A CN 201310494186 A CN201310494186 A CN 201310494186A CN 103578654 A CN103578654 A CN 103578654A
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- main shaft
- bayonet lock
- corresponding matching
- runing rest
- supporting frame
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Abstract
The invention relates to a tension control device of a stranding machine. The tension control device of the stranding machine comprises a main shaft (12) and is characterized in that a wire spool set (14) is connected to the main shaft and a controlling device (1) is arranged between every two adjacent wire spools; each controlling device comprises a supporting frame (10). A rotation supporting frame (18) and a II guide wheel supporting frame (4) are respectively connected at one side of the supporting frame (10) in a matched mode and the other side of the supporting frame is connected with a balancing weight (15). A I guide wheel (23) is connected at the front end of the rotation supporting frame and the II guide wheel supporting frame is connected with a II guide wheel (3) and a pressure head (8). Two friction devices (9) are symmetrically connected to the supporting frame and the pressure head corresponds to and is matched with the friction devices. Two springs (6) are further connected between the rotation supporting frame and the II guide wheel supporting frame in a matched mode. The tension control device of the stranding machine has the advantages that the constant speed difference between the wire spools and the main shaft can be kept, wire cores can be smoothly paid off and tension in paying off the wire cores can be kept even and stable when the wire cores are paid off.
Description
Technical field
The present invention relates to a kind of cabler, particularly a kind of tenslator of stranding machine.
Background technology
In the stranded process of Wire cable core, it is one of principal element affecting electric wire quality that core is emitted tension force, particularly, for the center type stranding machine of High Rotation Speed, the change procedure from full wire spool to empty wire spool, it is stable that strict demand core is emitted even tension.
Product of the present invention is for center type stranding machine, be applicable to double plate suitching type unwrapping wire or single-deck unwrapping wire, the building block that belongs to concentric type line twisting mechanism, be used for driving wire spool and main shaft rotating Vortex, by mechanical type, feed back simultaneously, at core, emit in process, can automatically adjust the relative rotation speed of wire spool and main shaft, thereby it is stable to have guaranteed that core is emitted even tension, has improved the stranded quality of Wire cable core.
Through extensively retrieval, not yet find comparatively desirable technical scheme.
Summary of the invention
The present invention guarantees that for cabler core emits the object of the stable device of even tension in order to provide a kind of, and the tenslator of a kind of stranding machine proposing.
To achieve these goals, the present invention has adopted following technical scheme:
A kind of tenslator of stranding machine, comprise main shaft, it is characterized in that: one group of concentric wire spool is connected on main shaft, on the main shaft at interval of between two wire spools, be all provided with a control device, on main shaft, be also provided with one group of opening, each opening and corresponding control device corresponding matching, an III guide wheel is connected in each opening, described control device is socketed in the support on main shaft, at a side of the support runing rest that is connected, opposite side connects balancing weight, two rubbing devices of symmetrical connection on support, a hinged II wheel bracket on runing rest, on runing rest, also connect one group of regulating shaft, II guide wheel is connected in one end of II wheel bracket, the other end connects pressure head, pressure head and rubbing device corresponding matching, one group of spring is also connected between runing rest and II wheel bracket, each spring and corresponding regulating shaft corresponding matching, at the front end socket I of runing rest wheel bracket, on I wheel bracket, connect I guide wheel.
On the basis of technique scheme, can there is following further technical scheme:
Described rubbing device comprises friction prop, in friction prop, be provided with a shoulder hole running through, telescopic shaft is connected in shoulder hole, friction plate, other end connection end cap are connected in one end of telescopic shaft, end cap matches with shoulder hole again, is also socketed a Compress Spring on telescopic shaft, the two ends of Compress Spring respectively with friction prop and end cap compressed fit, described friction plate and wire spool corresponding matching, end cap and pressure head corresponding matching.
On described runing rest, be also provided with draw-in groove, on runing rest, by bayonet lock axle, connect bayonet lock, bayonet lock and draw-in groove corresponding matching, on bayonet lock axle, be socketed torsion spring, torsion spring respectively with bayonet lock and runing rest corresponding matching, on II wheel bracket, be provided with backing pin, backing pin and bayonet lock corresponding matching.
The two ends of described bayonet lock axle connect respectively a handles, connect a bearing on backing pin, bearing and bayonet lock corresponding matching.
Described runing rest comprises sleeve, in the upper end of sleeve, be provided with flange, lower end is arranged with two with the lower support piece of through hole, on flange, be provided with draw-in groove, bilateral symmetry at draw-in groove is provided with two with the upper support piece of through hole, on flange, be also provided with supporting bracket, in supporting bracket, be provided with one group of through hole, be provided with connecting plate in supporting bracket, the upper end of connecting plate is provided with connecting cylinder.
Described II wheel bracket comprises connecting plate, lower end at connecting plate is provided with tube connector, is arranged with two bracing frames in the upper end of connecting plate, is provided with hinge hole on bracing frame, upside at bracing frame is provided with connecting rod, is also provided with spring Connection Block on bracing frame.
Described support comprises semi-circular plate, on semi-circular plate, be provided with fluting, fluting and opening corresponding matching, the company's of being symmetrical arranged supporting bracket on semi-circular plate, in supporting bracket, be provided with corresponding through hole, at the through hole rubbing device that is connected, end in supporting bracket is provided with end cap, center at end cap is provided with resigning hole, resigning hole coordinates with sleeve rotating, in the both sides of resigning hole, be symmetrical arranged respectively a slot to make way, slot to make way is corresponding with draw-in groove, semi-circular plate is also connected by screw a semicircle end cap, semi-circular plate coordinates formation sleeve with semicircle end cap, sleeve and main shaft socket.
This device is controlled applicable to double plate suitching type laying tension, and the tension force that is applicable to again single-deck unwrapping wire is controlled, and realizes the adjusting of laying tension in stranded process by mechanical tension feedback regulation.Described runing rest can be done 360 ° of rotations in support, and each control device can regulate rotation by handle, makes the wire spool corresponding matching of each control device and its both sides.Between control device and main shaft, by flat key, being connected, so control device rotates together with main shaft, and is to be connected by bearing between each wire spool and main shaft, itself and main shaft motion for the relative rotation.Each control device is zigzag shape and distributes on main shaft.When cable core is from wire spool process feedback device, then draw in main shaft.
Described II wheel bracket is hinged on support, II wheel bracket freely rotates around pin joint, when control device rotary speed is less than the rotary speed around wire spool, cable is tightened up, under the effect of cable, II wheel bracket rotates in the direction of the clock around pin joint, make pressure head pressing friction device, thereby make rubbing device compress reel, and then make to reduce around wire spool speed; On the contrary when control device rotary speed is greater than the rotary speed around wire spool, cable is stressed compared with little and lax, II wheel bracket rotates by counter clockwise direction around pin joint, make pressure head leave rubbing device, thereby make rubbing device away from reel, and then make to strengthen around wire spool speed, thereby so repeatedly regulate and reach poised state, make core laying tension stable.
The invention has the advantages that: this device realization maintenance wire spool and main shaft constant speed are poor, and core is emitted smoothly, and core is emitted in process, can keep laying tension uniform and stable.
Accompanying drawing explanation
Fig. 1 is basic structure schematic diagram of the present invention;
Fig. 2 is A-A cutaway view of Fig. 1;
Fig. 3 is the I partial enlarged drawing of Fig. 1;
Fig. 4 is the structural representation of control device;
Fig. 5 is the structural representation of runing rest;
Fig. 6 is the structural representation of II wheel bracket;
Fig. 7 is the structural representation of support.
Embodiment
As Fig. 1, shown in Fig. 2 and Fig. 4, the tenslator of a kind of stranding machine provided by the invention, comprise main shaft 12, it is characterized in that: 12 wire spools 14 are connected on main shaft 12, on the main shaft at interval of between two wire spools 14, be all provided with a control device 1, on main shaft 12, be provided with six opening 12a, in the both sides of each opening, be respectively equipped with a symmetrical back-up block, on back-up block, by pin, connect an III guide wheel 11, described control device 1 comprises the support 10 being socketed on main shaft 12, a runing rest 18 of a side socket at support, the opposite side balancing weight 15 that is also connected, two rubbing devices 9 of symmetrical connection on support.At the hinged II wheel bracket 4 of runing rest 18, II guide wheel 3, the other end pressure head 8 that is connected is connected in one end of II wheel bracket 4, two rubbing devices 9 of symmetrical connection on support 10, pressure head 8 and rubbing device 9 corresponding matching, two springs 6 are also connected between runing rest 18 and II wheel bracket 4, on runing rest, also connect regulating shaft 7, each spring and corresponding regulating shaft 7 corresponding matching, on regulating shaft 7, be also provided with the adjusting gear cooperatively interacting, by the elastic force of gear synchronous regulating spring 6.At the front end socket I of runing rest 18 wheel bracket 2, on I wheel bracket 2, connect I guide wheel 23.On runing rest 18, be also provided with draw-in groove 18f, on runing rest 18, by bayonet lock axle 21, connect bayonet lock 19, on bayonet lock axle 21, be socketed torsion spring 20, torsion spring 20 coordinates with bayonet lock 19 and runing rest 18 respectively, and bayonet lock 19 and draw-in groove 18f corresponding matching are provided with backing pin 22 on II wheel bracket 4, backing pin and bayonet lock 19 corresponding matching, on backing pin 22, connect a bearing 23, bearing 23 and bayonet lock 19 corresponding matching, connect respectively a handles 5 at the two ends of bayonet lock axle 21.
Shown in Fig. 3, described rubbing device 9 comprises friction prop 9b, in friction prop 9b, be provided with a shoulder hole 9f who runs through, telescopic shaft 9d is connected in shoulder hole 9f, friction plate 9e, other end connection end cap 9a are connected in one end of telescopic shaft 9d, end cap 9a matches with shoulder hole 9f again, on telescopic shaft 9d, be also socketed a Compress Spring 9c, the two ends of Compress Spring 9c respectively with friction prop 9b and end cap 9a compressed fit, described friction plate 9e and wire spool 14 corresponding matching, end cap 9a and pressure head 8 corresponding matching.
Shown in Fig. 5, described runing rest 18 comprises sleeve 18n, in the upper end of sleeve 18n, be provided with flange 18a, lower end is arranged with two with the lower support piece 18m of through hole, on flange 18a, be provided with draw-in groove 18f, in the bilateral symmetry of draw-in groove 18f, be provided with two and on flange 18a, be also provided with supporting bracket 18b with the upper support piece 18g of through hole, on supporting bracket 18b, be provided with one group of through hole 18e, on supporting bracket 18b, be provided with connecting plate 18c, the upper end of connecting plate 18c is provided with connecting cylinder 18d.Described support piece 18m is connected with the hinge hole 4f of II wheel bracket 4 by pin, supporting to peg graft on piece 18g a bearing pin 21, on bearing pin 21, be socketed respectively a bayonet lock 21 and two torsion springs 20, connecting cylinder 18d coordinates with 2 sockets of I wheel bracket, the regulating shaft 7 of pegging graft respectively in each through hole 18e.
Shown in Fig. 6, described II wheel bracket 4 comprises connecting plate 4a, in the lower end of connecting plate 4a, be provided with tube connector 4e, in the upper end of connecting plate 4a, be arranged with two bracing frame 4b, on bracing frame 4b, be provided with hinge hole 4f, in the upper end of bracing frame 4b, be provided with through hole 4d, at the upside of bracing frame 4b, be provided with connecting rod 4c, on bracing frame 4b, be also provided with spring Connection Block 4h.The pressure head 8 that is connected in described tube connector 4e connects II guide wheel 3 by pin in through hole 4d, and spring Connection Block 4h matches with spring 6, and the steady pin of pegging graft on connecting rod 4c is socketed a bearing on steady pin, bearing and bayonet lock 19 corresponding matching.
Shown in Fig. 7, described support 10 comprises semi-circular plate 10b, on semi-circular plate 10b, be provided with fluting 10c, fluting 10c and opening 12a corresponding matching, the supporting bracket 10d of the company of being symmetrical arranged on semi-circular plate 10b, on supporting bracket 10d, be provided with corresponding through hole 10g, at the through hole 10g rubbing device 9 that is connected, in the end of supporting bracket 10d, be provided with end cap 10h, at end cap 10h center, be provided with resigning hole 10e, resigning hole 10e coordinates with sleeve 18n rotation, in the both sides of resigning hole 10e, be symmetrical arranged respectively a slot to make way 10f, slot to make way 10f is corresponding with draw-in groove 18f, semi-circular plate 10b is also connected by screw a semicircle end cap 10a, semi-circular plate 10b coordinates formation sleeve with semicircle end cap 10a, sleeve and main shaft 12 sockets.
operation principle
A, cable core are emitted
As shown in Figure 2, center type stranding machine is in operation process, and cable core is emitted in the direction of the clock under the effect of tractive effort on wire spool 14, through I guide wheel 23, II guide wheel 3, III guide wheel 11, then advances forward through spindle hole.Main shaft 12 rotates by counter clockwise direction under the driving of drive system; Wire spool 14 is fixed on main shaft 12 by bearing, can by counter clockwise direction, rotate together with main shaft 12 by the effect of friction mechanism 9.Cable core is pulled from wire spool 14 and emits, and drum 14 is rotated in the direction of the clock with respect to main shaft 12.When drum 14 and main shaft 12 rotating Vortexes and wire spool 14 rotating speeds are during lower than main shaft 12 rotating speed, cable core is emitted smoothly, and now cable core is emitted tension force and depended on that friction mechanism 9 acts on the size of drum 14 frictional force.When friction mechanism 9 acts on wire spool 14 frictional force increase, wire spool 14 diminishes with the speed discrepancy of main shaft 12, and laying tension increases; When friction mechanism 9 acts on drum 14 frictional force and reduces, drum 14 becomes large with the speed discrepancy of main shaft 12, and laying tension reduces.
B, mechanical tension feedback regulation
As shown in Figure 1, when twisted cable core is emitted from draw drum, under the effect of hauling machine pulling force, pass through respectively I guide wheel 23, II guide wheel 3, III guide wheel 11, then process spindle hole is until the remittance line mould place of stranding machine does to rotate stranded.In cable core traveling process, II wheel bracket 4 be subject to cable core cable core tension force around the anticlockwise moment M1 of bearing pin 16 and Compress Spring 6 around the clockwise moment M2 acting in conjunction of bearing pin 16; Two moment loading opposite directions, wherein moment M2 size can be set by regulating shaft 7, make M2 be greater than M1, and M2 and M1 difference are constant, now II wheel bracket 4 can apply power F to friction mechanism 9 by pressure head 8, make friction plate 9e and put between wire spool 14 to compress, now friction plate 9e drive wire spool 14 and main shaft 12 keep constant speeds poor together with around main shaft 12 center lines revolutions; If M1 is greater than M2, between friction plate 9e and draw drum 14 thrust diminish or friction plate 9e and draw drum 14 between be separated from.
If the tension force that cable core produces in stranded process is greater than set point, moment M1 increases, and the power F that now pressure head 8 acts on friction mechanism 9 diminishes, and then the frictional force that causes friction plate 9e to act on draw drum 14 diminishes, drum 14 becomes large with the speed discrepancy of main shaft 12, and cable core tension force is reduced.When laying tension is decreased to set point, no longer reduce, moment M1 and M2 difference reach set point, thereby keep laying tension uniform and stable.
If the tension force of cable core in stranded process is less than set point, moment M1 reduces, and the power F that now pressure head 8 acts on friction mechanism 9 becomes large, and then the frictional force that causes friction plate 9e to act on draw drum 14 becomes large, drum 14 diminishes with the speed discrepancy of main shaft 12, and cable core tension force is increased.When laying tension increases to set point, no longer increase, moment M1 and M2 difference reach set point, thereby keep laying tension uniform and stable.
C, left and right dish switch
Double plate unwrapping wire as shown in Figure 1, is respectively left dish unwrapping wire and right dish unwrapping wire state.When left draw drum unwrapping wire finishes to switch to right dish unwrapping wire, operating handle 5 exits bayonet lock 19 from the cotter way of support 10, i.e. released state.Simultaneously II guide wheel 3 and II wheel bracket 4 can together with around bearing pin 16 rotations, pressure head 8 friction mechanisms 9 are separated from, at this moment can make runing rest 18 Rotate 180s ° to dextrad, then handle 5 and bayonet lock 19 reset and insert in the opposite side draw-in groove of support 10 under the effect of bayonet lock torsion spring 20, make runing rest 18 lockings, so far complete commutation action.
Claims (4)
1. the tenslator of a stranding machine, comprise main shaft (12), it is characterized in that: one group of concentric wire spool (14) is connected on main shaft (12), on the main shaft at interval of between two wire spools (14), be all provided with a control device (1), on main shaft (12), be also provided with one group of opening (12a), each opening (12a) and corresponding control device (1) corresponding matching, an III guide wheel (11) is connected in each opening, described control device (1) is socketed in the support (10) on main shaft (12), at a side of support (10) runing rest (18) that is connected, opposite side connects balancing weight (15), at upper symmetrical two rubbing devices (9) that connect of support (10), at the upper hinged II wheel bracket (4) of runing rest (18), on runing rest (18), also connect one group of regulating shaft (7), II guide wheel (3) is connected in one end of II wheel bracket (4), the other end connects pressure head (8), pressure head (8) and rubbing device (9) corresponding matching, one group of spring (6) is also connected between runing rest (18) and II wheel bracket (4), each spring (6) and corresponding regulating shaft (7) corresponding matching, front end socket I wheel bracket (2) at runing rest (18), at the upper I guide wheel (23) that connects of I wheel bracket (2).
2. the tenslator of a kind of stranding machine according to claim 1, it is characterized in that: described rubbing device (9) comprises friction prop (9b), in friction prop (9b), be provided with a shoulder hole running through (9f), telescopic shaft (9d) is connected in shoulder hole (9f), friction plate (9e) is connected in one end of telescopic shaft (9d), the other end connects end cap (9a), end cap (9a) matches with shoulder hole (9f) again, on telescopic shaft (9d), be also socketed a Compress Spring (9c), the two ends of Compress Spring (9c) respectively with friction prop (9b) and end cap (9a) compressed fit, described friction plate (9e) and wire spool (14) corresponding matching, end cap (9a) and pressure head (8) corresponding matching.
3. the tenslator of a kind of stranding machine according to claim 1, it is characterized in that: on described runing rest (18), be also provided with draw-in groove (18f), upper by bayonet lock axle (21) connection bayonet lock (19) at runing rest (18), bayonet lock (19) and draw-in groove (18f) corresponding matching, at the upper socket of bayonet lock axle (21) torsion spring (20), torsion spring (20) respectively with bayonet lock (19) and runing rest (18) corresponding matching, on II wheel bracket (4), be provided with backing pin (22), backing pin and bayonet lock (19) corresponding matching.
4. the tenslator of a kind of stranding machine according to claim 3, it is characterized in that: the two ends of described bayonet lock axle (21) connect respectively a handles (5), at the upper bearing (23) that connects of backing pin (22), bearing (23) and bayonet lock (19) corresponding matching.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310494186.6A CN103578654B (en) | 2013-10-21 | 2013-10-21 | A kind of tenslator of wire twisting machine |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310494186.6A CN103578654B (en) | 2013-10-21 | 2013-10-21 | A kind of tenslator of wire twisting machine |
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| Publication Number | Publication Date |
|---|---|
| CN103578654A true CN103578654A (en) | 2014-02-12 |
| CN103578654B CN103578654B (en) | 2016-08-17 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201310494186.6A Expired - Fee Related CN103578654B (en) | 2013-10-21 | 2013-10-21 | A kind of tenslator of wire twisting machine |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105984748A (en) * | 2015-02-05 | 2016-10-05 | 合肥神马科技集团有限公司 | Concentric stranding machine and compound stranding device thereof |
| CN105984752A (en) * | 2015-02-05 | 2016-10-05 | 合肥神马科技集团有限公司 | Concentric stranding machine and tension control device thereof |
| CN109036704A (en) * | 2018-06-19 | 2018-12-18 | 湖州新得意特种电磁线有限公司 | A kind of production of enamel wire actinobacillus device |
| CN110021463A (en) * | 2019-05-20 | 2019-07-16 | 司会娟 | A kind of uniform pay-off equipment and its uniform unwrapping wire tensioning apparatus |
| CN110077903A (en) * | 2019-06-04 | 2019-08-02 | 合肥神马科技集团有限公司 | A kind of mechanical strand laying tension control system with one heart |
| CN111584160A (en) * | 2020-06-04 | 2020-08-25 | 广州铁路职业技术学院（广州铁路机械学校） | Stranding machine winding displacement system based on wireless communication |
| CN113443523A (en) * | 2021-09-01 | 2021-09-28 | 启东晶尧光电科技有限公司 | Cable storage equipment for photovoltaic equipment |
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| AT311839B (en) * | 1970-11-12 | 1973-12-10 | Dl Veb Schwermaschb Kom Ernst | Stranding machine without reverse rotation |
| GB1421706A (en) * | 1973-08-24 | 1976-01-21 | Thaelmann Schwermaschbau Veb | Stranding machines |
| CN101599324A (en) * | 2009-07-13 | 2009-12-09 | 中利科技集团股份有限公司 | The wire tension adjusting device of stranding machine |
| CN102623109A (en) * | 2012-04-19 | 2012-08-01 | 白银有色集团股份有限公司 | CICC (Cable-In-Conduit Conduct) superconducting-conductor stranding tension control system |
| CN203536121U (en) * | 2013-10-21 | 2014-04-09 | 安徽长江精工电工机械制造有限公司 | Tension control device of wire winding machine |
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|---|---|---|---|---|
| AT311839B (en) * | 1970-11-12 | 1973-12-10 | Dl Veb Schwermaschb Kom Ernst | Stranding machine without reverse rotation |
| GB1421706A (en) * | 1973-08-24 | 1976-01-21 | Thaelmann Schwermaschbau Veb | Stranding machines |
| CN101599324A (en) * | 2009-07-13 | 2009-12-09 | 中利科技集团股份有限公司 | The wire tension adjusting device of stranding machine |
| CN102623109A (en) * | 2012-04-19 | 2012-08-01 | 白银有色集团股份有限公司 | CICC (Cable-In-Conduit Conduct) superconducting-conductor stranding tension control system |
| CN203536121U (en) * | 2013-10-21 | 2014-04-09 | 安徽长江精工电工机械制造有限公司 | Tension control device of wire winding machine |
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105984748A (en) * | 2015-02-05 | 2016-10-05 | 合肥神马科技集团有限公司 | Concentric stranding machine and compound stranding device thereof |
| CN105984752A (en) * | 2015-02-05 | 2016-10-05 | 合肥神马科技集团有限公司 | Concentric stranding machine and tension control device thereof |
| CN105984752B (en) * | 2015-02-05 | 2019-03-15 | 合肥神马科技集团有限公司 | A kind of concentric lay conductor machine and its tenslator |
| CN109036704A (en) * | 2018-06-19 | 2018-12-18 | 湖州新得意特种电磁线有限公司 | A kind of production of enamel wire actinobacillus device |
| CN109036704B (en) * | 2018-06-19 | 2024-03-15 | 江西中易微连新材料科技有限公司 | Paying-off device for enameled wire production |
| CN110021463A (en) * | 2019-05-20 | 2019-07-16 | 司会娟 | A kind of uniform pay-off equipment and its uniform unwrapping wire tensioning apparatus |
| CN110021463B (en) * | 2019-05-20 | 2020-09-01 | 台州孚亚电机有限公司 | Uniform pay-off equipment and uniform pay-off tensioning device thereof |
| CN110077903A (en) * | 2019-06-04 | 2019-08-02 | 合肥神马科技集团有限公司 | A kind of mechanical strand laying tension control system with one heart |
| CN111584160A (en) * | 2020-06-04 | 2020-08-25 | 广州铁路职业技术学院（广州铁路机械学校） | Stranding machine winding displacement system based on wireless communication |
| CN113443523A (en) * | 2021-09-01 | 2021-09-28 | 启东晶尧光电科技有限公司 | Cable storage equipment for photovoltaic equipment |
| CN113443523B (en) * | 2021-09-01 | 2021-11-16 | 启东晶尧光电科技有限公司 | Cable storage equipment for photovoltaic equipment |
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