CN210795348U - Pay-off rack - Google Patents
Pay-off rack Download PDFInfo
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- CN210795348U CN210795348U CN201921771456.2U CN201921771456U CN210795348U CN 210795348 U CN210795348 U CN 210795348U CN 201921771456 U CN201921771456 U CN 201921771456U CN 210795348 U CN210795348 U CN 210795348U
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- connecting rod
- pay
- side wall
- connecting pipe
- rod
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Abstract
The utility model relates to a pay-off rack, which comprises a base, a limiting rod, a top plate provided with a first through hole, a plurality of supporting rods arranged between the top plate and the base, a connecting rod erected on the top plate, a guide rod arranged on the connecting rod, and a plurality of guide rings arranged on the guide rod, wherein the top plate is provided with a second through hole for the connecting rod to move up and down; the connecting pipe is provided with a locking mechanism for abutting and positioning the connecting rod, the locking mechanism comprises a plurality of channels which are circumferentially distributed on the circumferential wall of the connecting pipe and are communicated with the inner wall and the outer wall of the connecting pipe, balls which are slidably embedded in the channels, and an abutting assembly which is arranged on the connecting pipe and is used for driving the balls to abut against the side wall of the connecting rod at the same time. This scheme has made things convenient for the unwrapping wire end height of operator's adjustment pay off rack.
Description
Technical Field
The utility model belongs to the technical field of the technique of motor processing and specifically relates to a pay off rack is related to.
Background
The inductance coil is an important component in the motor, the quality of the inductance coil is good, the performance of the inductance coil directly influences the use effect of the motor, and the inductance coil is usually obtained by winding a copper wire through a numerical control winding machine. In order to make the copper wire on the winding roller smoothly enter the numerical control winding machine, people usually load the wound copper wire into a pay-off rack so as to orderly release the copper wire.
Traditional pay off rack, including the base, erect the gag lever post on the base, set up directly over the base and be equipped with the roof of through-hole, set up many spinal branchs vaulting pole that is used for supporting the location roof on the base, erect the connecting rod above the roof, set up in head rod upper end and with head rod vertically guide bar to and evenly set up a plurality of guide rings that are used for carrying out the direction to the copper line on the guide bar. When the copper wire needs to be released, an operator firstly sleeves the winding roller with the copper wire on the limiting rod, then the copper wire sequentially penetrates through the through hole and the guide ring, and finally the copper wire is led to the numerical control winding machine. When the numerical control winding machine starts to wind the copper wire, the copper wire can be released from the winding roller continuously, then sequentially passes through the through hole and the guide ring, and finally enters the numerical control winding machine to be wound.
Although the pay-off stand is simple in structure and simple in operation principle, in the actual winding process of the coil, an operator often places the heightening plates with different thicknesses below the base so as to shorten the height difference between the pay-off end of the pay-off stand and the take-up end of the numerical control winding machine and further enable the winding of the coil to be smoother. The mode of adjusting the height of the pay-off end of the pay-off rack is time-consuming and labor-consuming, and brings inconvenience to the operation of an operator.
SUMMERY OF THE UTILITY MODEL
The utility model aims at providing a pay off rack has made things convenient for the operator to adjust the unwrapping wire end height of pay off rack.
The above utility model discloses an above-mentioned utility model purpose can realize through following technical scheme:
a pay-off stand comprises a base, a limiting rod erected on the base, a top plate arranged above the base and provided with a first through hole, a plurality of support rods arranged between the top plate and the base, a connecting rod erected on the top plate, a guide rod arranged on the connecting rod and a plurality of guide rings arranged on the guide rod, wherein a second through hole for the connecting rod to move up and down is formed in the top plate; the connecting pipe is provided with a locking mechanism for abutting and positioning the connecting rod, the locking mechanism comprises a plurality of channels which are circumferentially distributed on the circumferential wall of the connecting pipe and are communicated with the inner wall and the outer wall of the connecting pipe, balls which are slidably embedded in the channels, and an abutting assembly which is arranged on the connecting pipe and is used for driving the balls to abut against the side wall of the connecting rod at the same time.
By adopting the technical scheme, when the pay-off end of the pay-off rack and the take-up end of the numerical control winding machine have obvious height difference, an operator can move the connecting rod up and down to adjust the heights of the guide rod and the guide ring, the height of the pay-off end of the pay-off rack can be changed, and the operator can shorten the height difference between the pay-off end of the pay-off rack and the take-up end of the numerical control winding machine. After the unwrapping wire end of pay off rack was adjusted to suitable height, the user ordered about a plurality of balls on the connecting pipe through supporting tight subassembly and supported tightly on the lateral wall of connecting rod simultaneously, and the position of connecting rod will be locked by the ball, and the height of guide bar and guide ring just can be firmly fixed, and the unwrapping wire end of pay off rack will be located suitable height all the time, and locking mechanical system's structural principle is nimble ingenious, and very convenient in the operation. When the height of the pay-off end of the pay-off rack needs to be adjusted again, a user reversely operates the abutting assembly to enable the ball to not abut on the side wall of the connecting rod any more, and the operation is very convenient. This scheme makes the operator reciprocate the connecting rod and can adjust the unwrapping wire end height of pay off rack through second through-hole, connecting pipe and locking mechanical system's setting, has saved the operation that the operator placed the board that increases of different thickness in the below of base, has made things convenient for the unwrapping wire end height of operator adjustment pay off rack greatly.
The utility model discloses further set up to: the abutting assembly comprises a rotating sleeve and an abutting inclined plane, wherein the rotating sleeve is sleeved on the outer side wall of the connecting pipe through threads, the abutting inclined plane is arranged on the inner side wall of the rotating sleeve in a circumferential direction corresponding to the plurality of balls, and the distance between the abutting inclined plane and the central axis of the rotating sleeve is gradually changed along the axial direction of the rotating sleeve.
Through adopting above-mentioned technical scheme, the operator rotates to rotate behind the cover, rotates the cover and will remove along the axial emergence of connecting pipe under the effect of screw thread, rotates the cover at the in-process that removes, and the interval between butt inclined plane and the ball changes gradually, and final butt inclined plane will order about a plurality of balls and support tightly in step or not support tightly on the lateral wall of connecting rod, and then has realized fixing or loosening the connecting rod position, and the structural principle is ingenious, and it is very convenient in the operation.
The utility model discloses further set up to: the upper end of the connecting rod is provided with two lug plates which are parallel to each other and are arranged at intervals, and one end of the guide rod close to the connecting rod is rotatably connected between the two lug plates through a horizontal rotating shaft; the lug is provided with a fixing mechanism for abutting and positioning the guide rod.
Through adopting above-mentioned technical scheme, operator's accessible rotation guide bar comes synchronous drive guide ring to take place to remove, and the height of guide ring will change along with the rotation of guide bar, and the operator can borrow this to shorten the pay off end of pay off rack and the height difference between the receipts line end of numerical control coiling machine, is favorable to improving flexibility and the practicality that the device used. After the pay-off end of the pay-off rack is adjusted to a proper height, an operator supports the guide rod tightly through the fixing mechanism to position the guide rod. If the guide rod needs to be rotated and adjusted again, the operator cancels the abutting and positioning effect of the fixing mechanism on the guide rod.
The utility model discloses further set up to: the fixing mechanism comprises a threaded hole formed in the side wall of the guide rod and a bolt which penetrates through the lug and is in threaded fit with the threaded hole, and the head of the bolt abuts against one surface, far away from the guide rod, of the lug; the fixing mechanism further comprises an arc-shaped groove which is formed in the lug and used for enabling the bolt to synchronously rotate along with the guide rod.
Through adopting above-mentioned technical scheme, when the operator rotates the guide bar, the bolt will be along with the guide bar takes place to remove in the arc wall in step, after the unwrapping wire end adjustment of pay off rack was gone up to suitable height, the operator screwed up the bolt on the screw hole and made the head of bolt support tightly on the guide bar was kept away from to the auricle on one surface, under the frictional force effect between bolt head and auricle, the rotation angle of guide bar just can be locked, and fixed establishment's structural principle is simple, and it is very convenient in the operation. If the guide rod needs to be rotated again, an operator rotates the bolt on the threaded hole and enables the bolt not to abut against the lug piece, and the operation is very convenient.
The utility model discloses further set up to: and a gasket for increasing the contact area of the lug and the bolt is arranged between the lug and the bolt.
Through adopting above-mentioned technical scheme, the gasket has increased the area of contact between bolt head and the auricle, increases the frictional force between bolt and the auricle, is favorable to reducing the unexpected condition of taking place to rotate of guide bar.
The utility model discloses further set up to: the lateral wall of the connecting rod is provided with a groove corresponding to the ball, the length direction of the groove is consistent with that of the connecting rod, and the part of the ball penetrating out of the inner side wall of the connecting pipe rolls and is tightly attached to the inner side wall of the groove.
Through adopting above-mentioned technical scheme, the recess makes and becomes present line contact from original point contact between ball and the connecting rod, has increased area of contact between ball and the connecting rod, becomes to increase area of contact between connecting rod and the connecting pipe mutually, and then makes reciprocating of connecting rod more steady.
The utility model discloses further set up to: and a dial gauge for displaying the height of the connecting rod is arranged on the side wall of the connecting rod.
Through adopting above-mentioned technical scheme, the operator can know the height of connecting rod through the graduation apparatus, and then makes the operator can reciprocate the connecting rod fast and accurately and adjust the height of pay-off end on the pay off rack, has made things convenient for the operator to adjust the pay-off end height of pay off rack greatly.
The utility model discloses further set up to: and a protective sleeve is arranged at the first through hole.
Through adopting above-mentioned technical scheme, the protective sheath can reduce the wearing and tearing that inside wall and the edge of first through-hole led to the fact the copper line, can play the guard action of certain degree to the copper line.
To sum up, the utility model discloses a beneficial technological effect does:
the arrangement of the second through hole, the connecting pipe and the locking mechanism saves the operation of placing heightening plates with different thicknesses below the base by an operator, and greatly facilitates the operator to adjust the height of the pay-off end of the pay-off rack;
the arrangement of the lug plate, the rotating shaft and the fixing mechanism provides a method for an operator to adjust the height of the pay-off end of the pay-off rack, and is favorable for improving the flexibility and the practicability of the device;
the arrangement of the groove can lead the up-and-down movement of the connecting rod to be more stable;
due to the arrangement of the dial gauge, an operator can quickly and accurately move the connecting rod up and down to adjust the height of the pay-off end on the pay-off rack;
the protective sheath can play the guard action of certain degree to the copper line.
Drawings
Fig. 1 is a schematic view of the overall structure of the present invention.
Fig. 2 is a schematic sectional view of the middle top plate, the connecting pipe and the rotating sleeve of the present invention.
Fig. 3 is a partially enlarged schematic view of a portion a in fig. 1.
In the figure, 1, a base; 2. a limiting rod; 3. a top plate; 4. a first through hole; 5. a support bar; 6. a connecting rod; 7. a guide bar; 8. a guide ring; 9. a protective sleeve; 10. a second through hole; 11. a connecting pipe; 12. a channel; 13. a ball bearing; 14. rotating the sleeve; 15. abutting against the inclined plane; 16. a dial gauge; 17. a groove; 18. a tab; 19. a rotating shaft; 20. a threaded hole; 21. an arc-shaped slot; 22. a bolt; 23. and (7) a gasket.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings.
Referring to fig. 1, the pay-off stand comprises a base 1 with a circular cross section, a vertical limiting rod 2 fixedly connected to the upper surface of the base 1 and located at the center of circle of the base 1, a circular top plate 3 located right above the base 1 and coaxial with the base 1, a first through hole 4 formed in the center of circle of the top plate 3 for a copper wire to pass through, and three supporting rods 5 fixedly connected between the top plate 3 and the base 1, wherein the three supporting rods 5 are uniformly distributed around the central axis of the base 1; the utility model provides a pay off rack, still including setting up on roof 3 and transversal personally submit circular shape vertical connecting rod 6, setting at the guide bar 7 of connecting rod 6 upper end to and fixed connection is used for carrying out the three guide ring 8 that leads to the copper line on guide bar 7, and three guide ring 8 is along the length direction align to grid of guide bar 7. An operator firstly sleeves the winding roller with the copper wire on the limiting rod 2, then sequentially penetrates the copper wire through the first through hole 4 and the guide ring 8, and finally the copper wire is led to the numerical control winding machine. After the numerical control winding machine starts to wind the copper wire, the copper wire can be released from the winding roller continuously, and the copper wire sequentially passes through the first through hole 4 and the guide ring 8 and finally enters the numerical control winding machine to be wound.
In order to reduce the abrasion of the inner side wall and the edge of the first through hole 4 to the copper wire, a protective sleeve 9 for shielding the inner side wall and the edge of the first through hole 4 is fixedly connected to the first through hole 4.
Referring to fig. 1 and 2, a second through hole 10 with a circular cross section is vertically formed in a position of the top plate 3 corresponding to the connecting rod 6, the diameter of the connecting rod 6 is the same as that of the second through hole 10, and the connecting rod 6 can slide up and down relative to the second through hole 10. The upper surface of the top plate 3 is fixedly connected with a vertical connecting pipe 11 with a circular cross section, the central axis of the connecting pipe 11 is coincident with the central axis of the connecting rod 6, and the inner side wall of the connecting pipe 11 is tightly attached to the side wall of the connecting rod 6. Four spherical channels 12 communicated with the inner wall and the outer wall of the connecting pipe 11 are formed in the peripheral wall of the connecting pipe 11, the four channels 12 are distributed on the peripheral wall of the connecting pipe 11 at equal angular intervals, balls 13 are embedded in the four channels 12 in a sliding mode, and partial areas of the balls 13 penetrate through the inner side wall and the outer side wall of the connecting pipe 11 all the time. The threaded sleeve is equipped with one and rotates cover 14 on the lateral wall of connecting pipe 11, rotates on the inside wall of cover 14 circumference offer with the butt inclined plane 15 of four ball 13 butts, butt inclined plane 15 to rotate the distance between the cover 14 axis and increase gradually along the direction of keeping away from roof 3. When the pay-off end of the pay-off rack and the take-up end of the numerical control winding machine have obvious height difference, an operator can slide the connecting rod 6 up and down to adjust the heights of the guide rod 7 and the guide ring 8, so that the height difference between the pay-off end of the pay-off rack and the take-up end of the numerical control winding machine is shortened. After connecting rod 6 slided suitable height and goes up, the rotatory cover 14 that rotates of operator, rotate cover 14 and will move towards keeping away from roof 3 direction under the effect of screw thread, the interval between butt inclined plane 15 and the ball 13 will diminish gradually, ball 13 will press from both sides tight connecting rod 6 under the effect of butt inclined plane 15 eventually, after connecting rod 6 was cliied to four balls 13, the height of connecting rod 6 just can be locked, and then the unwrapping wire end that makes the pay off rack is located suitable height all the time. To readjust the height of the connecting rod 6, the operator rotates the rotating sleeve 14 in the opposite direction so that the balls 13 no longer grip the connecting rod 6. Wherein, the rotating sleeve 14 and the abutting inclined plane 15 form a abutting assembly; the channel 12, the ball 13 and the abutment assembly constitute a locking mechanism.
Referring to fig. 2, in order to enable an operator to quickly and accurately adjust the height of the pay-off end on the pay-off rack, a scale 16 for displaying the height of the connecting rod 6 is disposed on the side wall of the connecting rod 6.
A groove 17 with an arc-shaped cross section is formed in the side wall of the connecting rod 6 corresponding to each ball 13, and the length direction of the groove 17 is consistent with that of the connecting rod 6. The part of the ball 13 which penetrates out of the inner side wall of the connecting pipe 11 is tightly attached to the inner side wall of the groove 17 in a sliding manner. The lateral wall of ball 13 and connecting rod 6 will become present line contact from the point contact originally, becomes to increase the contact area between connecting pipe 11 and the connecting rod 6 mutually, and then has strengthened the stability when connecting rod 6 slides, has still avoided connecting rod 6 to take place circumferential direction's the relative connecting pipe 11 condition simultaneously, lets connecting rod 6's upper and lower slip more smoothly.
Referring to fig. 1 and 3, two lugs 18 are fixedly connected to the upper end of the connecting rod 6, and the two lugs 18 are parallel to each other and are arranged at intervals. A horizontal rotating shaft 19 is rotatably connected between the two lug plates 18, and one end of the guide rod 7 close to the connecting rod 6 is fixedly sleeved on the side wall of the rotating shaft 19. A threaded hole 20 is formed in one side wall of the guide rod 7 close to the lug 18, a circular arc-shaped groove 21 is formed in the position, corresponding to the threaded hole 20, of the lug 18, and the circle center of the arc-shaped groove 21 is located on the central axis of the rotating shaft 19. The lug 18 is further provided with a bolt 22, one end of the bolt 22 penetrates through the arc-shaped groove 21 and is in threaded fit with the threaded hole 20, and the head of the bolt 22 can be abutted against one side wall of the lug 18, which is far away from the guide rod 7. An operator can rotate the guide rod 7 to adjust the height of the guide ring 8, and then the height of the pay-off end on the pay-off rack is adjusted. In the process that the guide rod 7 rotates around the rotating shaft 19, the bolt 22 moves in the arc-shaped groove 21 along with the guide rod 7, after the guide rod 7 rotates to a proper angle, an operator tightens the bolt 22 and enables the head of the bolt 22 to be abutted against the corresponding lug 18, the guide rod 7 is always located at the proper angle, and then the pay-off end on the pay-off rack is located at a proper height. If the angle of the guide bar 7 is to be readjusted, the operator then unscrews the bolt 22. The threaded hole 20, the bolt 22 and the arc-shaped groove 21 form a fixing mechanism for abutting and positioning the guide rod 7.
Referring to fig. 3, in order to improve the stability of the locked guide bar 7, a washer 23 for increasing the contact area between the head of the bolt 22 and the lug 18 is slidably sleeved on the bolt 22.
The implementation principle of the embodiment is as follows: when the pay-off end of the pay-off rack and the take-up end of the numerical control winding machine have obvious height difference, an operator can slide the connecting rod 6 up and down to adjust the heights of the guide rod 7 and the guide ring 8, so that the height difference between the pay-off end of the pay-off rack and the take-up end of the numerical control winding machine is shortened. After connecting rod 6 slided suitable height and goes up, the rotatory cover 14 that rotates of operator, rotate cover 14 and will move towards keeping away from roof 3 direction under the effect of screw thread, the interval between butt inclined plane 15 and the ball 13 will diminish gradually, ball 13 will press from both sides tight connecting rod 6 under the effect of butt inclined plane 15 eventually, after connecting rod 6 was cliied to four balls 13, the height of connecting rod 6 just can be locked, and then the unwrapping wire end that makes the pay off rack is located suitable height all the time. To readjust the height of the connecting rod 6, the operator rotates the rotating sleeve 14 in the opposite direction so that the balls 13 no longer grip the connecting rod 6. In addition, the operator can also rotate the guide rod 7 to adjust the height of the guide ring 8, so that the height of the pay-off end on the pay-off rack can be adjusted. In the process that the guide rod 7 rotates around the rotating shaft 19, the bolt 22 moves in the arc-shaped groove 21 along with the guide rod 7, after the guide rod 7 rotates to a proper angle, an operator tightens the bolt 22 and enables the head of the bolt 22 to be abutted against the corresponding lug 18, the guide rod 7 is always located at the proper angle, and then the pay-off end on the pay-off rack is located at a proper height. If the angle of the guide bar 7 is to be readjusted, the operator then unscrews the bolt 22.
The embodiment of this specific implementation mode is the preferred embodiment of the present invention, not limit according to this the utility model discloses a protection scope, so: all equivalent changes made according to the structure, shape and principle of the utility model are covered within the protection scope of the utility model.
Claims (8)
1. The utility model provides a pay off rack, includes base (1), erect gag lever post (2) on base (1), set up roof (3) in base (1) top and be equipped with first through-hole (4), many spinal branchs vaulting pole (5) of setting between roof (3) and base (1), erect connecting rod (6) on roof (3), guide bar (7) of setting on connecting rod (6), and set up a plurality of guide rings (8) on guide bar (7), its characterized in that: a second through hole (10) for the connecting rod (6) to move up and down is formed in the top plate (3), a connecting pipe (11) with a circular cross section and communicated with the second through hole (10) is also erected on the top plate (3), and the inner side wall of the connecting pipe (11) is tightly attached to the side wall of the connecting rod (6); the connecting pipe (11) is provided with a locking mechanism for abutting and positioning the connecting rod (6), the locking mechanism comprises a plurality of channels (12) which are circumferentially distributed on the circumferential wall of the connecting pipe (11) and are communicated with the inner wall and the outer wall of the connecting pipe (11), balls (13) which are slidably embedded in the channels (12), and abutting components which are arranged on the connecting pipe (11) and are used for driving the balls (13) to abut against the side wall of the connecting rod (6) at the same time.
2. The pay-off stand according to claim 1, wherein: the abutting component comprises a rotating sleeve (14) which is sleeved on the outer side wall of the connecting pipe (11) in a threaded manner, and an abutting inclined surface (15) which is arranged on the inner side wall of the rotating sleeve (14) in a circumferential direction corresponding to a plurality of balls (13), wherein the distance between the abutting inclined surface (15) and the central axis of the rotating sleeve (14) is gradually changed along the axial direction of the rotating sleeve (14).
3. The pay-off stand according to claim 1, wherein: the upper end of the connecting rod (6) is provided with two lug plates (18) which are parallel to each other and arranged at intervals, and one end of the guide rod (7) close to the connecting rod (6) is rotatably connected between the two lug plates (18) through a horizontal rotating shaft (19); the lug (18) is provided with a fixing mechanism for abutting and positioning the guide rod (7).
4. The pay-off stand according to claim 3, wherein: the fixing mechanism comprises a threaded hole (20) formed in the side wall of the guide rod (7) and a bolt (22) which penetrates through the lug plate (18) and is in threaded fit with the threaded hole (20), and the head of the bolt (22) abuts against one surface, far away from the guide rod (7), of the lug plate (18); the fixing mechanism also comprises an arc-shaped groove (21) which is arranged on the lug plate (18) and used for the bolt (22) to synchronously rotate along with the guide rod (7).
5. The pay-off stand according to claim 4, wherein: a gasket (23) for increasing the contact area of the lug (18) and the bolt (22) is arranged between the lug and the bolt.
6. The pay-off stand according to claim 1, wherein: a groove (17) is formed in the side wall of the connecting rod (6) corresponding to the ball (13), the length direction of the groove (17) is consistent with that of the connecting rod (6), and the part, penetrating out of the inner side wall of the connecting pipe (11), of the ball (13) rolls and is attached to the inner side wall of the groove (17).
7. The pay-off stand according to claim 1, wherein: and a dial gauge (16) for displaying the height of the connecting rod (6) is arranged on the side wall of the connecting rod (6).
8. The pay-off stand according to claim 1, wherein: and a protective sleeve (9) is arranged at the first through hole (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921771456.2U CN210795348U (en) | 2019-10-19 | 2019-10-19 | Pay-off rack |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921771456.2U CN210795348U (en) | 2019-10-19 | 2019-10-19 | Pay-off rack |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN210795348U true CN210795348U (en) | 2020-06-19 |
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ID=71242748
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201921771456.2U Active CN210795348U (en) | 2019-10-19 | 2019-10-19 | Pay-off rack |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN210795348U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252179A (en) * | 2020-09-27 | 2021-01-22 | 深圳市盐田港建筑工程检测有限公司 | Bridge nondestructive test equipment |
| CN113353730A (en) * | 2021-06-11 | 2021-09-07 | 贵州长征输配电电气有限公司 | Power line traction device |
-
2019
- 2019-10-19 CN CN201921771456.2U patent/CN210795348U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112252179A (en) * | 2020-09-27 | 2021-01-22 | 深圳市盐田港建筑工程检测有限公司 | Bridge nondestructive test equipment |
| CN112252179B (en) * | 2020-09-27 | 2022-04-19 | 深圳市盐田港建筑工程检测有限公司 | Bridge nondestructive test equipment |
| CN113353730A (en) * | 2021-06-11 | 2021-09-07 | 贵州长征输配电电气有限公司 | Power line traction device |
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