CN209786631U - Device for hanging rope on overhead line - Google Patents
Device for hanging rope on overhead line Download PDFInfo
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- CN209786631U CN209786631U CN201920440568.3U CN201920440568U CN209786631U CN 209786631 U CN209786631 U CN 209786631U CN 201920440568 U CN201920440568 U CN 201920440568U CN 209786631 U CN209786631 U CN 209786631U
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- overhead line
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- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 238000004140 cleaning Methods 0.000 description 1
- 230000009194 climbing Effects 0.000 description 1
- 230000008602 contraction Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
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Abstract
The utility model discloses a device for be used for taking rope to hang in overhead line, include: the bracket is detachably arranged on the cross arm of the electric tower; the telescopic mechanism is transversely arranged on the bracket and can rotate on a plane vertical to the extending direction of the telescopic mechanism; a rocker arm connected to a distal end of the telescoping mechanism to swing by rotation of the telescoping mechanism; a clamping mechanism connected to the free end of the rocker arm, the clamping mechanism having a clamped state in which the cord is held thereon and an open state in which the cord is released; wherein: when the telescopic mechanism stretches and retracts and the rocker arm swings to drive the clamping mechanism to stride over the overhead line, the clamping mechanism is switched from a clamping state to an opening state, and the rope is released to be hung on the overhead line.
Description
Technical Field
The utility model relates to an electric power overhauls technical field, especially relates to a device that is used for climbing rodlike body and hangs rope in overhead line.
background
When the foreign matter on the high-voltage line is cleared away daily, when the foreign matter is closer to an operator, the foreign matter can be cleared away in an auxiliary manner through the insulating operating rod. But the foreign matter is far away from the operating personnel, when the insulating rod can not be used for cleaning, the operating personnel is required to throw the insulating rope, during operation, the operating personnel is required to climb up the power transmission tower firstly, a proper position is selected, the position is determined according to the voltage grade of the power transmission line, 110KV is 1.5 meters, 220KV is 3 meters, 330KV is 4 meters, 500KV is 5 meters, a plurality of positions are also connected with insulator strings, one end of the insulating rope is tied with a heavy object, one end of a lead for hanging the foreign matter is thrown, the underground operating personnel simultaneously move the two ends of the insulating rope to the position of the foreign matter, the crescent fork tool is tied on the insulating rope, the foreign matter is transmitted to the position of the foreign matter by pulling the insulating rope, the underground operating personnel continuously pulls the insulating rope, the foreign matter is wound by the crescent fork, and finally the foreign matter is cleaned from the lead.
However, since the shakeproof hammers are arranged on one side close to the power transmission tower, a worker throwing the rope is difficult to send the rope to a position except the shakeproof hammers at one time, the rope is often clamped by the shakeproof hammers, and the rope needs to be removed in advance by a method, so that the operation method prolongs the working time, increases the working strength of the operator, and because the working position belongs to high-altitude operation, the human body swinging amplitude is large when the insulating rope is thrown, and the personal safety of the operator is seriously influenced. When the distance is short, the rope can be sent to a specified position by connecting a plurality of insulating rods, but when the distance is long, the insulating rods are connected very long, and the rope and a heavy object connected to the rope are arranged at the other end of each insulating rod, so that the arm strength requirement of an operator is very high.
SUMMERY OF THE UTILITY MODEL
to the above-mentioned technical problem that exists among the prior art, the embodiment of the utility model provides a device for hanging the rope in the overhead line is provided.
for solving the technical problem, the embodiment of the utility model adopts the following technical scheme:
A device for hitching a line to an overhead line, comprising:
the bracket is detachably arranged on the cross arm of the electric tower;
The telescopic mechanism is transversely arranged on the bracket and can rotate on a plane vertical to the extending direction of the telescopic mechanism;
A rocker arm connected to a distal end of the telescoping mechanism to swing by rotation of the telescoping mechanism;
A clamping mechanism connected to the free end of the rocker arm, the clamping mechanism having a clamped state in which the cord is held thereon and an open state in which the cord is released; wherein:
When the telescopic mechanism stretches and retracts and the rocker arm swings to drive the clamping mechanism to stride over the overhead line from the upper part of the overhead line, the clamping mechanism is switched from a clamping state to an opening state, and the rope is released to be hung on the overhead line.
Preferably, the bracket comprises a clamping seat and a stand column arranged on the clamping seat; the telescopic mechanism is connected to the upright post; wherein:
the bottom of the clamping seat is provided with a clamping groove which is communicated along the extending direction of the cross arm; the novel cross arm is characterized in that two side walls opposite to the clamping groove are provided with accommodating grooves, stop blocks are arranged in the accommodating grooves, springs are connected between the stop blocks and the bottoms of the accommodating grooves, the heads of the stop blocks extend out of the side walls, guide surfaces are formed on the lower portions of the stop blocks, and the cross arm is clamped in the clamping groove above the stop blocks by contacting with the guide surfaces to force the stop blocks to retract and extend out.
preferably, a torsion mechanism is arranged between the telescopic mechanism and the bracket; the torsion mechanism includes:
A stator sleeve fixed to the bracket;
one end of the rotor shaft extends into the stator sleeve, and the telescopic mechanism is connected to the other end of the rotor shaft;
A torsion spring connected between the stator can and the rotor shaft; wherein:
and a handle radially extends out of the rotor shaft.
preferably, the clamping mechanism is mounted on a rotating shaft, and the rotating shaft is mounted on a free end of the rocker arm by means of a bearing, so that the clamping mechanism is always in an open-oriented posture when the rocker arm swings.
preferably, the telescopic mechanism comprises:
An outer tube; connected to the bracket;
A travel bar disposed within the outer tube, the rocker arm being connected to the travel bar;
a first drive mechanism for driving the travel bar to telescope relative to the outer tube.
Preferably, the first drive mechanism comprises:
A first motor disposed within the outer tube;
A first gear provided on an output shaft of the first motor;
and at least one section of the first gear rack is formed on the movable rod, and the first gear is used for being meshed with the first gear rack to drive the movable rod to extend and retract relative to the outer pipe.
Preferably, a liner tube is arranged between the outer tube and the movable rod; wherein:
The first motor is fixed on the liner tube;
the first rack also has a section formed on an inner wall of the outer tube.
preferably, the clamping mechanism comprises:
a holding body fixed to the rotating shaft;
The clamping body comprises two opposite clamping bodies which are pivoted on the holding body;
A second driving mechanism for driving the gripping body to pivot so that the gripping mechanism is switched between a gripping state and an open state.
preferably, the second driving mechanism includes:
a second motor provided on the holding body;
A second gear provided on an output shaft of the second motor;
A drive rod, on which a second rack is formed, and which is arranged on the holding body and can move relative to the holding body; the second gear is used for being in meshing transmission with the second rack so as to enable the driving rod to move; wherein:
the driving rod drives the two clamping bodies to pivot synchronously by moving so as to switch the clamping mechanism between the clamping state and the opening state.
preferably, the driving rod is pivoted with oppositely arranged hook plates, the clamping bodies are configured into a pawl structure, and the hook plates are in hooking fit with the clamping bodies, so that when the driving rod moves, the hook plates pivot to enable the two clamping bodies to synchronously pivot through the hooking fit.
compared with the prior art, the utility model discloses a beneficial effect that is used for taking the rope to hang in the device of overhead line is: the utility model discloses utilize telescopic machanism's flexible function and rocking arm to sway the function and avoid the obstacle and stride the overhead line to opening through fixture and make the rope hang on the overhead line, and then avoided adopting the workman to throw a series of problems that mention in the background art that the rope brought.
Drawings
fig. 1 is a schematic perspective view of a device for hanging a rope on an overhead line according to an embodiment of the present invention.
fig. 2 is a front cross-sectional view of a device for suspending a rope from an overhead line according to an embodiment of the present invention.
Fig. 3 is an enlarged view of a portion a of fig. 2.
Fig. 4 is an enlarged view of a portion B of fig. 2.
fig. 5 is an enlarged view of a portion C of fig. 2.
fig. 6 is a partial sectional view taken along line D of fig. 2.
fig. 7 is a first state view of a device for suspending a rope from an overhead line according to an embodiment of the present invention in use.
fig. 8 is a second state view of the device for suspending a rope from an overhead line according to the embodiment of the present invention in a use state.
in the utility model figure:
10-a scaffold; 11-a card holder; 111-card slot; 112-a stop; 1121-guide surfaces; 113-a spring; 114-a receiving groove; 12-a column; 20-a telescoping mechanism; 21-an outer tube; 22-a moving rod; 23-a liner tube; 241-a first motor; 242 — a first gear; 243-first rack; 25-a cannula; 30-a rocker arm; 40-a clamping mechanism; 41-a clamping body; 42-a drive rod; 431-a second motor; 432-a second gear; 433-a second rack; 44-hook plate; 50-a torsion mechanism; 51-a stator sleeve; 52-rotor shaft; 521-a capture post; 522-a spring; 53-a handle; 60-a rotating shaft; 70-a storage battery; 71-a switch; 72-a switch; 80-a bearing; 100-cross arm; 200-overhead line; 300-a vibration damper; 400-rope.
Detailed Description
In order to make the technical solution of the present invention better understood by those skilled in the art, the present invention will be described in detail with reference to the accompanying drawings and the detailed description.
As shown in fig. 1 to 8, the present invention discloses a device for hanging a rope on an overhead line, which comprises a support 10, a telescopic mechanism 20, a rocker 30 and a clamping mechanism 40. The support 10 is detachably disposed on a cross arm 100 of the electric tower, and the cross arm 100 of the electric tower is perpendicular to the direction of the overhead line 200 (may be perpendicular to the other side). The telescopic mechanism 20 is disposed transversely to the support 10 and can rotate on a plane perpendicular to the extension direction thereof, and the extension direction of the telescopic mechanism 20 is parallel to the direction of the overhead line 200. The swing arm 30 is connected to a distal end (an end remote from the stand 10) of the telescopic mechanism 20 to swing by the rotation of the telescopic mechanism 20. A clamping mechanism 40 is connected to the free end of the swing arm 30, the clamping mechanism 40 having a clamped state in which the cable 400 is held thereon and an open state in which the cable 400 is released. When the telescoping mechanism 20 is extended and retracted and the swing arm 30 swings to bring the gripping mechanism 40 across the overhead wire 200 from above the overhead wire 200, the gripping mechanism 40 is switched from the gripping state to the open state, and the rope 400 is released to hang the rope 400 on the overhead wire 200.
The following describes the method of use of the above-described apparatus:
as shown in fig. 7, the whole device is first mounted on the cross arm 100 of the electric tower by means of the bracket 10, and at this time, the telescopic mechanism 20 is parallel to the overhead line 200 and is at a distance from the overhead line 200; switching the gripping mechanism 40 to the open state, disposing the rope 400 in the gripping mechanism 40, and switching the gripping mechanism 40 to the closed state again, at which time the rope 400 is held by the gripping mechanism 40; then, as shown in fig. 8, the extension and contraction mechanism 20 is extended to a length that can avoid the obstacle after the swing arm 30 swings (the avoidance of the vibration damper 300 will be described as an example in the present application); then, as shown in fig. 8, when the swing arm 30 is rotated by applying a force to rotate the expansion mechanism 20 and thus the swing arm 30, and the rotation angle of the swing arm 30 causes the rope 400 gripped by the gripping mechanism 40 to cross the overhead wire 200, the gripping mechanism 40 is controlled to be switched to the open state, and at this time, the rope 400 falls to be hung on the overhead wire 200.
the utility model discloses utilize telescopic machanism 20's flexible function and rocking function of rocking arm 30 to avoid the obstacle and stride across overhead line 200 with rope 400 to make rope 400 hang on overhead line 200 through opening of fixture 40, and then avoided adopting the workman to throw a series of problems that mention in the background art that rope 400 brought.
In a preferred embodiment of the present invention, as shown in fig. 3 in combination with fig. 2, the bracket 10 includes a clamping seat 11 and a column 12 disposed on the clamping seat 11; telescoping mechanism 20 is connected to mast 12; wherein: the bottom of the clamping seat 11 is provided with a clamping groove 111 which is communicated along the extending direction of the cross arm 100; two opposite side walls of the slot 111 are provided with a receiving groove 114, a stopper 112 is arranged in the receiving groove 114, a spring 113 is connected between the stopper 112 and the bottom of the receiving groove 114, the head of the stopper 112 extends out of the side walls and the lower part thereof is formed with a guide surface 1121, the cross arm 100 contacts with the guide surface 1121 to force the stopper 112 to retract and extend out, so that the cross arm 100 is clamped in the slot 111 above the stopper 112.
The advantages of the above embodiment are:
The whole device can be stably clamped on the cross arm 100 by utilizing the extension and retraction of the stop block 112, the fixing process is simple, and the operation is convenient.
in a preferred embodiment of the present invention, as shown in fig. 2, a torsion mechanism 50 is disposed between the telescoping mechanism 20 and the support frame 10; the twisting mechanism 50 includes: stator housing 51, rotor shaft 52, and torsion spring. The stator sleeve 51 is fixed on the upright post 12 and is arranged perpendicular to the upright post 12, one end of the rotor shaft 52 extends into the stator sleeve 51, and the telescopic mechanism 20 is connected to the other end of the rotor shaft 52; a torsion spring is connected between the stator case 51 and the rotor shaft 52; wherein: a handle 53 extends radially from the rotor shaft 52. In this embodiment, the handle 53 is twisted to make the telescoping mechanism 20 swing the swing arm 30, thereby facilitating the transportation of the rope 400 over the overhead line 200. In addition, by reasonably arranging the stopping structure, after the rope 400 is released, the rocker arm 30 automatically returns under the action of the torsion spring. For example, by reasonably arranging the stopping structure, the rocker arm 30 can be automatically returned to the vertical state, and of course, the rocker arm 30 can also be automatically returned to the vertical state by arranging the torsion state of the torsion spring, for example, when the rocker arm 30 is in the vertical state, the installation state of the torsion spring is in the free state without elastic potential energy, namely without torque, and further the swinging can be naturally returned.
it should be noted that: in most cases, the swing arm 30 is not limited by a stopper structure, so as to prevent the swing arm 30 from being unable to avoid obstacles or interfering with other objects (including operators) due to the swing being limited in the opposite direction.
In a preferred embodiment of the present invention, as shown in fig. 5, the clamping mechanism 40 is installed on the rotating shaft 60, and the rotating shaft 60 is installed on the free end of the swing arm 30 via the bearing 80, so that the clamping mechanism 40 is always in the open orientation when the swing arm 30 swings. In this embodiment, the bearing 80 prevents the rotating shaft 60 from being damped, so that the clamping mechanism 40 is always in a vertical state with the opening facing, thereby facilitating the release of the rope 400.
In a preferred embodiment of the present invention, as shown in fig. 4, the telescoping mechanism 20 includes: an outer tube 21, a travel bar 22, a liner 23, and a first drive mechanism. The outer tube 21 is connected to the rotor shaft 52, the moving rod 22 is disposed inside the outer tube 21, and the rocker arm 30 is connected to the moving rod 22; the liner 23 is disposed between the outer tube 21 and the travel bar 22. The first driving mechanism is used for driving the movable rod 22 to extend and retract. Wherein, first actuating mechanism includes: a first motor 241, a first rack 243, and a first gear 242. The first motor 241 is fixed on the liner 23, and the first rack 243 is formed at the rear section of the moving rod 22 and the front section of the inner wall of the outer tube 21, respectively; the first gear 242 is disposed on the output shaft of the first motor 241 and engaged with the first rack 243 (the liner 23 is provided with a strip-shaped slit, and the first gear 242 passes through the slit and is engaged with the first rack 243 on the moving rod 22). The moving rod 22 is extended and contracted by the driving of the first motor 241 to change the length of the retracting mechanism 20. A stop switch is provided on the rear end of the outer tube 21, and controls the first motor 241 to stop operating when the moving rod 22 is completely retracted.
in a preferred embodiment of the present invention, as shown in fig. 6 and fig. 2, the rear end of the outer tube 21 is provided with a sleeve 25, the rotor shaft 52 extends into the sleeve 25, the rotor shaft 52 is provided with a locking post 521 which is extended and retracted by a spring 522, the locking post 521 limits the separation of the rotor shaft 52 from the sleeve 25 by extending out of the sleeve 25, and the rotor shaft 52 can be pulled out of the sleeve and separated from the outer tube 21 by retracting the locking post 521.
in a preferred embodiment of the present invention, as shown in fig. 5, the holding mechanism 40 includes: a holding body, a clamping body 41, a hook plate 44, a driving rod 42, a butterfly torsion spring and a second driving mechanism. The holding body is fixed on the rotating shaft 60; the clamping bodies 41 comprise two clamping bodies 41 which are arranged oppositely and pivoted at the lower end of the holding body through a pin shaft, preferably, the two clamping bodies 41 are oppositely buckled into an arc shape, and a torsion spring is arranged at the pivoting position of the clamping bodies 41. The hook plates 44 include two hook plates 44, which are pivotally connected to the driving rod 42, and a torsion spring is disposed between the two hook plates 44 to provide a torsion force. The clamping body 41 is arranged in a ratchet configuration such that: when the driving rod 42 moves downwards by the second driving mechanism, the hook plate 44 will be blocked on the holding bodies to switch the two holding bodies to the open state, and when the driving rod 42 moves upwards, the hook plate 44 is separated from the holding bodies, at this time, under the action of the torsion spring, the two clamping bodies 41 are switched to the clamping state.
The second drive mechanism includes: the rope clamping device comprises a second motor 431, a second gear 432 and a second rack 433, wherein the second rack 433 is formed at the upper section of a driving rod 42, the second motor 431 is fixed on a holding body, the second gear 432 is arranged on an output shaft of the second motor 431, the second motor 431 drives the driving rod 42 to vertically reciprocate through operation and reversing and meshing of the second gear 432 and the second rack 433, so that the clamping mechanism 40 is switched between an opening state and a clamping state, and the rope 400 is clamped and released.
it should be noted that: the clamped state described above is not limited to a state in which the two clamping bodies 41 are directly in contact with the cord 400, and a state in which the cord 400 is stored in a clamping space formed by the two clamping bodies 41 may be understood as a clamped state.
The battery 70 for operating the first motor 241 and the second motor 431 may be placed on the cross arm 100, or may be attached to a component such as the bracket 10.
Two switches are also provided at the interface of the stand 10 and the telescopic mechanism 20, one switch 71 for controlling the first motor 241 and the other switch 72 for controlling the second motor 431.
The above embodiments are only exemplary embodiments of the present invention, and are not intended to limit the present invention, and the protection scope of the present invention is defined by the claims. Various modifications and equivalents of the invention can be made by those skilled in the art within the spirit and scope of the invention, and such modifications and equivalents should also be considered as falling within the scope of the invention.
Claims (10)
1. a device for suspending a rope from an overhead line, comprising:
the bracket is detachably arranged on the cross arm of the electric tower;
The telescopic mechanism is transversely arranged on the bracket and can rotate on a plane vertical to the extending direction of the telescopic mechanism;
A rocker arm connected to a distal end of the telescoping mechanism to swing by rotation of the telescoping mechanism;
a clamping mechanism connected to the free end of the rocker arm, the clamping mechanism having a clamped state in which the cord is held thereon and an open state in which the cord is released; wherein:
When the telescopic mechanism stretches and retracts and the rocker arm swings to drive the clamping mechanism to stride over the overhead line from the upper part of the overhead line, the clamping mechanism is switched from a clamping state to an opening state, and the rope is released to be hung on the overhead line.
2. The apparatus of claim 1, wherein the support comprises a socket and a post disposed on the socket; the telescopic mechanism is connected to the upright post; wherein:
The bottom of the clamping seat is provided with a clamping groove which is communicated along the extending direction of the cross arm; the novel cross arm is characterized in that two side walls opposite to the clamping groove are provided with accommodating grooves, stop blocks are arranged in the accommodating grooves, springs are connected between the stop blocks and the bottoms of the accommodating grooves, the heads of the stop blocks extend out of the side walls, guide surfaces are formed on the lower portions of the stop blocks, and the cross arm is clamped in the clamping groove above the stop blocks by contacting with the guide surfaces to force the stop blocks to retract and extend out.
3. A device for suspending a rope from an overhead line as claimed in claim 1, wherein a torsion mechanism is provided between the telescopic mechanism and the support; the torsion mechanism includes:
a stator sleeve fixed to the bracket;
one end of the rotor shaft extends into the stator sleeve, and the telescopic mechanism is connected to the other end of the rotor shaft;
a torsion spring connected between the stator can and the rotor shaft; wherein:
And a handle radially extends out of the rotor shaft.
4. the apparatus of claim 1, wherein the clamping mechanism is mounted on a rotating shaft mounted on a free end of the rocker arm via a bearing, such that the clamping mechanism is always in an open orientation when the rocker arm swings.
5. A device for suspending a line from an overhead line as claimed in claim 1, wherein the telescopic mechanism comprises:
An outer tube; connected to the bracket;
a travel bar disposed within the outer tube, the rocker arm being connected to the travel bar;
A first drive mechanism for driving the travel bar to telescope relative to the outer tube.
6. An apparatus for suspending a rope from an overhead line as defined in claim 5, wherein the first drive mechanism comprises:
A first motor disposed within the outer tube;
a first gear provided on an output shaft of the first motor;
And at least one section of the first gear rack is formed on the movable rod, and the first gear is used for being meshed with the first gear rack to drive the movable rod to extend and retract relative to the outer pipe.
7. a device for suspending a line from an overhead line as claimed in claim 6, wherein a liner is provided between the outer tube and the travel bar; wherein:
the first motor is fixed on the liner tube;
the first rack also has a section formed on an inner wall of the outer tube.
8. a device for suspending a line from an overhead line as claimed in claim 4, wherein the clamping mechanism comprises:
A holding body fixed to the rotating shaft;
the clamping body comprises two opposite clamping bodies which are pivoted on the holding body;
a second driving mechanism for driving the gripping body to pivot so that the gripping mechanism is switched between a gripping state and an open state.
9. An apparatus for suspending a rope from an overhead line as defined in claim 8, wherein the second drive mechanism comprises:
a second motor provided on the holding body;
A second gear provided on an output shaft of the second motor;
a drive rod, on which a second rack is formed, and which is arranged on the holding body and can move relative to the holding body; the second gear is used for being in meshing transmission with the second rack so as to enable the driving rod to move; wherein:
The driving rod drives the two clamping bodies to pivot synchronously by moving so as to switch the clamping mechanism between the clamping state and the opening state.
10. the apparatus of claim 9, wherein the drive rod is pivotally connected to oppositely disposed hook plates, the clamp bodies are configured in a ratchet configuration, and the hook plates are in hooking engagement with the clamp bodies such that when the drive rod is moved, the hook plates pivot to cause the two clamp bodies to pivot synchronously via the hooking engagement.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920440568.3U CN209786631U (en) | 2019-04-02 | 2019-04-02 | Device for hanging rope on overhead line |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920440568.3U CN209786631U (en) | 2019-04-02 | 2019-04-02 | Device for hanging rope on overhead line |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209786631U true CN209786631U (en) | 2019-12-13 |
Family
ID=68800805
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920440568.3U Active CN209786631U (en) | 2019-04-02 | 2019-04-02 | Device for hanging rope on overhead line |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209786631U (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011219A (en) * | 2019-04-02 | 2019-07-12 | 国网冀北电力有限公司秦皇岛供电公司 | For by rope lodge in the device of overhead line |
| CN111009870A (en) * | 2020-01-10 | 2020-04-14 | 宁波绵长电子科技有限公司 | Movable high-altitude cable deicing device |
-
2019
- 2019-04-02 CN CN201920440568.3U patent/CN209786631U/en active Active
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110011219A (en) * | 2019-04-02 | 2019-07-12 | 国网冀北电力有限公司秦皇岛供电公司 | For by rope lodge in the device of overhead line |
| CN110011219B (en) * | 2019-04-02 | 2024-02-23 | 国网冀北电力有限公司秦皇岛供电公司 | Device for hooking rope to overhead line |
| CN111009870A (en) * | 2020-01-10 | 2020-04-14 | 宁波绵长电子科技有限公司 | Movable high-altitude cable deicing device |
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