CN213636887U - A interim fixing device of drainage wire for distribution network live working - Google Patents

A interim fixing device of drainage wire for distribution network live working Download PDF

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Publication number
CN213636887U
CN213636887U CN202022363950.4U CN202022363950U CN213636887U CN 213636887 U CN213636887 U CN 213636887U CN 202022363950 U CN202022363950 U CN 202022363950U CN 213636887 U CN213636887 U CN 213636887U
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fixedly connected
seat
distribution network
hole
piece
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CN202022363950.4U
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Chinese (zh)
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李庆辉
王新军
崔智高
张瑞祥
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Rocket Force University of Engineering of PLA
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Rocket Force University of Engineering of PLA
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Abstract

The utility model belongs to the technical field of drainage wire fixation, in particular to a temporary drainage wire fixing device for live working of a power distribution network, which comprises a first C-shaped piece, wherein the upper end of a first screw rod extends into the first C-shaped piece and is fixedly connected with a locking plate, an inner cavity is arranged inside a mounting seat, a plurality of arc locking grooves are uniformly arranged on a turntable ring, two first springs are fixedly connected with a limiting block, two support rods extend out of a step hole and are fixedly connected with an arc locking piece matched with the arc locking grooves, the lower end of a rectangular rod extends into the inner cavity and is fixedly connected with an ejector piece matched with the arc locking piece, the left side and the right side of a limiting handle are provided with supporting blocks, the supporting blocks are hinged with a rotating seat, the upper side of the rotating seat is provided with a telescopic rod mechanism, the upper end of the telescopic rod component is fixedly connected, the device is more suitable for various construction environments, and is convenient for workers to use.

Description

A interim fixing device of drainage wire for distribution network live working
Technical Field
The utility model belongs to the technical field of the drainage wire is fixed, concretely relates to interim fixing device of drainage wire for distribution network live working.
Background
The distribution network is an electric power network which receives electric energy from a transmission network or a regional power plant and distributes the electric energy to various users on site through distribution facilities or step by step according to voltage. The power distribution network is composed of overhead lines, cables, towers, distribution transformers, isolating switches, reactive power compensators, a plurality of accessory facilities and the like.
In the maintenance process of a daily power distribution network, a power distribution network is in live disconnection and connection with a drainage line, namely, the drainage line is disconnected or connected with a main line, the power distribution network operates on a high-altitude tower, the drainage line can swing along with wind when being used for drainage, or the drainage line swings due to the fact that an operator touches the drainage line, the distance between the drainage line and other phase sequences is not enough, safety accidents are caused, the reliability of power supply is influenced, and even workers can be injured. The on-site urgent need is for a tool capable of safely fixing the drainage wire, so that the operation safety of the drainage wire is ensured.
SUMMERY OF THE UTILITY MODEL
The utility model aims at: aiming at providing a drainage wire temporary fixing device for distribution network live working, being convenient for fix the drainage wire, preventing to influence the power supply reliability or injure the operation personnel, and the fixed angle of the device can be adjusted with the fixed length, and the staff of being convenient for uses.
In order to realize the technical purpose, the utility model discloses a technical scheme as follows:
a drainage wire temporary fixing device for live working of a power distribution network comprises a first C-shaped piece, wherein a first screw rod is in threaded connection with the lower side of the first C-shaped piece, the upper end of the first screw rod extends into the first C-shaped piece and is fixedly connected with a locking plate, the lower end of the first screw rod is fixedly connected with a first rotating handle, the upper side of the first C-shaped piece is fixedly connected with an installation seat, an inner cavity is arranged in the installation seat, a rotary disc is rotatably assembled in the inner cavity, a plurality of arc-shaped locking grooves are uniformly formed in the annular shape of the rotary disc, two step holes are formed in the inner wall of one side of the inner cavity, first springs are arranged in the two step holes, two first springs are fixedly connected with limit blocks, two limit blocks are fixedly connected with supporting rods extending out of the step holes, and an arc-shaped locking piece matched with the arc, a rectangular through hole positioned between the two support rods is arranged on the upper side of the mounting seat, a rectangular rod is assembled in the rectangular through hole in a sliding manner, the lower end of the rectangular rod extends into the inner cavity and is fixedly connected with a jacking piece matched with the arc-shaped locking piece, a second spring is sleeved on the lower side of the rectangular rod, the upper side of the rectangular rod extends out of the rectangular through hole and is rotatably assembled with a limiting handle, the left side and the right side of the limiting handle are both provided with a supporting block, a rotary sleeve extending out of the inner cavity is fixedly connected with the upper side of the rotary table, a supporting seat is fixedly connected with the upper end of the rotary sleeve, the supporting seat is hinged with a rotating seat, a plurality of locking holes are uniformly arranged in the shape of a ring on the supporting seat, through holes matched with the locking holes are arranged on the left side and the right side of the rotating seat, the rotating seat is provided with a bolt matched with the lock hole and the through hole, the upper side of the rotating seat is provided with a telescopic rod mechanism, and the upper end of the telescopic rod component is fixedly connected with a wire clamping mechanism.
By adopting the technical scheme of the utility model, a worker can clamp the drainage wire through the wire clamping mechanism, then can clamp the first C-shaped piece into the angle steel on the upper side of the telegraph pole, and can drive the locking plate to move by rotating the first rotating handle, so as to be matched with the first C-shaped piece and clamp the angle steel on the upper side of the telegraph pole, thereby realizing the fixation of the device; when the support angle of the drainage wire needs to be adjusted by a worker, the worker can take out the bolt from the position between the supporting seat and the rotating seat, so that the limit of the rotating seat is cancelled, the worker can rotate the rotating seat at the moment so as to drive the telescopic rod mechanism to rotate, after the worker rotates the telescopic rod mechanism to a proper angle, the position of the rotating seat is finely adjusted to enable the through hole to be matched with the position of the lock hole, and the bolt is inserted into the through hole and the lock hole so as to limit the rotating seat, so that the angle of the telescopic rod mechanism can be limited; after the telescopic rod mechanism is adjusted to a proper angle, a worker can lift the limiting handle, when the limiting handle is lifted to be separated from between the two supporting blocks, the worker rotates the limiting handle to enable the limiting handle and the two supporting blocks to be distributed at ninety degrees, the limiting handle falls on the outer surfaces of the two supporting blocks through compression of the second spring, the ejector is moved out of the arc-shaped locking piece at the moment, the limiting of the arc-shaped locking piece is cancelled, the worker can rotate the rotating sleeve at the moment, the rotating sleeve simultaneously drives the rotating disc to rotate, the arc-shaped locking piece is continuously pressed when the rotating disc rotates, the first spring, the limiting block and the supporting rod are matched to realize the resetting of the arc-shaped locking piece, when the rotating sleeve rotates, the telescopic rod mechanism and the wire clamping mechanism are driven to do circular motion, so that the worker can more widely adjust the fixed angle of the drainage wire, when the worker fixes the fixed angle of, the staff stops rotating the rotating sleeve, thereby the rotary table stops rotating, the arc-shaped locking piece pushes the arc-shaped locking piece into the arc-shaped locking piece under the stretching action of the first spring, the staff can rotate the limiting handle at the moment, the limiting handle is enabled to be parallel to the two supporting blocks, the limiting handle is loosened at the moment, the jacking piece is pushed into the space between the arc-shaped locking piece and the inner wall of the inner cavity through the stretching action of the second spring, the arc-shaped locking piece is limited, the arc-shaped locking piece can not move, the rotary table is limited, and therefore the limiting of the rotating sleeve, the telescopic rod mechanism and the wire clamping mechanism is realized; the arrangement of the telescopic rod mechanism is convenient for workers to adjust the supporting height of the drainage wire; this device simple structure, reasonable in design is convenient for fix the drainage wire, prevents to influence the reliability of power supply or injure the operation personnel, and this device fixed angle all can be adjusted with the fixed length, and accommodation is wide, makes this device be applicable to multiple construction environment more, and the staff of being convenient for uses.
Further inject, telescopic link mechanism is including the loop bar, the loop bar with rotate a seat fixed connection, the loop bar cover is equipped with the bracing piece, loop bar threaded connection have with bracing piece assorted locking bolt. According to the structure, the supporting rod can slide relative to the sleeve rod, the supporting rod can be limited by screwing the locking bolt, and the distance between the wire clamping mechanism and the first C-shaped piece can be adjusted through the structure.
Further inject, the thread clamping mechanism is including second C shape spare, second C shape spare downside inner wall is equipped with first thread clamping block, second C shape spare upside threaded connection has the second screw rod, handle is rotated to second screw rod upside fixedly connected with second, the second screw rod downside is rotated and is equipped with the second thread clamping block with first thread clamping block assorted, be equipped with stabilizing assembly between second thread clamping block and the second C shape spare. By adopting the structure, a worker can place a drainage wire between the first wire clamping block and the second wire clamping block, the second rotating handle is twisted to drive the second wire clamping block to move downwards, and the drainage wire is clamped tightly by the second wire clamping block approaching to the first wire clamping block.
Further inject, stabilize the subassembly including spout and slide bar, the spout is established at second C shaped element inner wall, the slide bar assembly is in the spout, second C shaped element is established with the slide bar cover. With the structure, when the second wire clamping block moves, the sliding rod limits the second wire clamping block, so that the second wire clamping block is prevented from swinging when moving.
Further define, bolt fixedly connected with magnet piece. With the structure, when the plug pin is inserted into the lock hole and the through hole, the magnet block attracts the rotating seat to limit the plug pin.
Compared with the prior art, the utility model has the following advantages:
this device simple structure, reasonable in design is convenient for fix the drainage wire, prevents to influence the reliability of power supply or injure the operation personnel, and this device fixed angle all can be adjusted with the fixed length, and accommodation is wide, makes this device be applicable to multiple construction environment more, and the staff of being convenient for uses.
Drawings
The present invention can be further illustrated by the non-limiting examples given in the accompanying drawings;
fig. 1 is a first structural schematic view of an embodiment of a temporary drainage wire fixing device for live-wire work of a power distribution network of the present invention;
FIG. 2 is an enlarged schematic view of the structure at A in FIG. 1;
fig. 3 is a schematic structural view of a drainage wire temporary fixing device for live-wire work of a power distribution network according to an embodiment of the present invention;
fig. 4 is a schematic view showing a cross-sectional structure of an embodiment of a temporary drainage wire fixing device for live-line work of a power distribution network of the present invention;
FIG. 5 is an enlarged view of the structure at B in FIG. 4;
fig. 6 is a schematic view of a cross-sectional structure of an embodiment of a temporary drainage wire fixing device for live-wire work of a power distribution network according to the present invention;
the main element symbols are as follows:
the locking device comprises a first C-shaped part 1, a first screw rod 11, a locking plate 12, a first rotating handle 13, a mounting seat 2, an inner cavity 21, a rotating disc 22, an arc-shaped locking groove 23, a stepped hole 24, a first spring 25, a limiting block 26, a supporting rod 27, an arc-shaped locking piece 28, a rectangular through hole 3, a rectangular rod 31, a top part 32, a second spring 33, a limiting handle 34, a supporting block 35, a rotating sleeve 4, a supporting seat 41, a rotating seat 42, a locking hole 43, a through hole 44, a bolt 45, a sleeve rod 5, a supporting rod 51, a locking bolt 52, a second C-shaped part 53, a first wire clamping block 54, a second rotating handle, a second screw rod 542, a second wire clamping block 55, a sliding groove 56, a sliding rod 57 and a magnet block 541.
Detailed Description
In order to make the present invention better understood by those skilled in the art, the technical solutions of the present invention are further described below with reference to the accompanying drawings and examples.
As shown in FIGS. 1-6, the temporary drainage wire fixing device for live working of a power distribution network of the present invention comprises a first C-shaped member 1, a first screw rod 11 is connected to the lower side of the first C-shaped member 1 through a screw thread, a locking plate 12 is fixedly connected to the upper end of the first screw rod 11 and extends into the first C-shaped member 1, a first rotating handle 13 is fixedly connected to the lower end of the first screw rod 11, a mounting seat 2 is fixedly connected to the upper side of the first C-shaped member 1, an inner cavity 21 is arranged inside the mounting seat 2, a rotating disc 22 is rotatably assembled inside the inner cavity 21, a plurality of arc locking grooves 23 are uniformly annularly arranged on the rotating disc 22, two step holes 24 are arranged on the inner wall of one side of the inner cavity 21, first springs 25 are arranged inside the two step holes 24, stoppers 26 are fixedly connected to the two first springs 25, supporting rods 27 extending out of the step holes 24 are fixedly connected to the two supporting rods 27, an arc locking member 28 matching, 2 upsides of mount pad are equipped with the rectangle through-hole 3 that is located between two branch 27, the inside slip of rectangle through-hole 3 is equipped with rectangle pole 31, rectangle pole 31 lower extreme stretches into inner chamber 21 internal fixation connected with and 28 assorted lifters 32 of arc latch fitting, rectangle pole 31 downside cover is equipped with second spring 33, rectangle pole 31 upside stretches out rectangle through-hole 3 and rotates and be equipped with spacing handle 34, the spacing handle 34 left and right sides all is equipped with supporting shoe 35, carousel 22 upside fixedly connected with stretches out inner chamber 21's swivel mount 4, 4 upper end fixedly connected with supporting seats 41 of swivel mount, supporting seat 41 articulates there is rotation seat 42, supporting seat 41 annular evenly is equipped with a plurality of lockholes 43, it all is equipped with lockhole 43 assorted through-hole 44 to rotate the seat 42 left and right sides, it is equipped with lockhole 43 and through-hole 44 assorted bolt 45 to rotate seat 42, it is equipped with telescopic link mechanism.
By adopting the technical scheme of the utility model, a worker can clamp the drainage wire through the wire clamping mechanism, then can clamp the first C-shaped piece 1 into the angle steel on the upper side of the telegraph pole, and can drive the locking plate 12 to move by rotating the first rotating handle 13, so as to be matched with the first C-shaped piece 1 to clamp the angle steel on the upper side of the telegraph pole, thereby realizing the fixation of the device; when the support angle of the drainage wire needs to be adjusted by a worker, the worker can take the bolt 45 out of the position between the supporting seat 41 and the rotating seat 42, so that the limit of the rotating seat 42 is cancelled, the worker can rotate the rotating seat 42 at the moment so as to drive the telescopic rod mechanism to rotate, when the telescopic rod mechanism is rotated to a proper angle by the worker, the position of the rotating seat 42 is finely adjusted, the through hole 44 is matched with the position of the lock hole 43, and the bolt 45 is inserted into the through hole 44 and the lock hole 4, so that the limit of the rotating seat 42 is realized, and the angle of the telescopic rod mechanism can be limited; after the telescopic rod mechanism is adjusted to a proper angle, the worker can lift the limit handle 34, when the limit handle 34 is lifted to be separated from between the two supporting blocks 35, the worker rotates the limit handle 34 to enable the limit handle 34 and the two supporting blocks 35 to be distributed at ninety degrees, the limit handle 34 falls on the outer surfaces of the two supporting blocks 35 through the compression of the second spring 33, the ejector 32 is moved out of the arc-shaped locking piece 28 to cancel the limit on the arc-shaped locking piece 28, the worker can rotate the rotary sleeve 4 at the same time, the rotary table 22 is driven to rotate when the rotary sleeve 4 rotates, the rotary table 22 is pressed against the arc-shaped locking piece 28 when rotating, the first spring 25 and the limit block 26 are matched with the supporting rod 27 to realize the continuous resetting of the arc-shaped locking piece 28, when the rotary sleeve 4 rotates, the drive mechanism and the wire clamping mechanism are driven to do circular motion, so that the worker can more widely adjust the fixed angle, when a worker fixes the fixed angle of the drainage wire at a proper angle, the worker stops rotating the rotating sleeve 4, so that the rotating disc 22 stops rotating, the arc-shaped locking piece 28 pushes the arc-shaped locking piece 28 into the arc-shaped locking piece 28 under the stretching action of the first spring 25, the worker can rotate the limiting handle 34 at the moment to enable the limiting handle 34 to be parallel to the two supporting blocks 35, the limiting handle 34 is loosened at the moment, the top piece 32 is pushed between the arc-shaped locking piece 28 and the inner wall of the inner cavity 21 through the stretching action of the second spring 33 to limit the arc-shaped locking piece 28, the arc-shaped locking piece 28 cannot move and limit the rotating disc 22, and therefore the limiting of the rotating sleeve 4, the telescopic rod mechanism and the wire clamping mechanism is realized; the arrangement of the telescopic rod mechanism is convenient for workers to adjust the supporting height of the drainage wire; this device simple structure, reasonable in design is convenient for fix the drainage wire, prevents to influence the reliability of power supply or injure the operation personnel, and this device fixed angle all can be adjusted with the fixed length, and accommodation is wide, makes this device be applicable to multiple construction environment more, and the staff of being convenient for uses.
Preferably, telescopic link mechanism includes loop bar 5, and loop bar 5 and rotation seat 42 fixed connection, and loop bar 5 cover is equipped with bracing piece 51, and loop bar 5 threaded connection has with bracing piece 51 assorted locking bolt 52. With this structure, the support rod 51 can slide relative to the sleeve rod 5, and the tightening of the locking bolt 52 can limit the position of the support rod 51, so that the distance between the wire clamping mechanism and the first C-shaped member 1 can be adjusted. In fact, other configurations may be used, as the case may be, and the spacing between the clamping mechanism and the first C-shaped member 1 may be adjusted.
Preferably, the wire clamping mechanism comprises a second C-shaped part 53, a first wire clamping block 54 is arranged on the inner wall of the lower side of the second C-shaped part 53, a second screw 542 is in threaded connection with the upper side of the second C-shaped part 53, a second rotating handle 541 is fixedly connected with the upper side of the second screw 542, a second wire clamping block 55 matched with the first wire clamping block 54 is rotatably assembled on the lower side of the second screw 542, and a stabilizing component is arranged between the second wire clamping block 55 and the second C-shaped part 53. With the structure, a worker can place a drainage wire between the first wire clamping block 54 and the second wire clamping block 55, and can drive the second wire clamping block 55 to move downwards by screwing the second rotating handle 541, so that the drainage wire is clamped by the approach of the second wire clamping block 55 and the first wire clamping block 54. In fact, other configurations for clamping the drain wire are contemplated as appropriate.
Preferably, the stabilizing assembly comprises a sliding groove 56 and a sliding rod 57, the sliding groove 56 is arranged on the inner wall of the second C-shaped member 53, the sliding rod 57 is assembled in the sliding groove 56, and the second C-shaped member 53 and the sliding rod 57 are sleeved. With such a configuration, when the second thread clamping block 55 moves, the slide rod 57 restricts the second thread clamping block 55, and prevents the second thread clamping block 55 from swinging when moving. In fact, other structures can be considered according to specific situations to prevent the second wire clamping block 55 from swinging when moving.
Preferably, the pin 45 is fixedly connected with a magnet block 58. With this configuration, when the plug 45 is inserted into the lock hole 43 and the through hole 44, the magnet block 58 holds the rotary base 42 and restricts the plug 45. In fact, other structures can be used according to specific situations, and the pin 45 is limited when the pin 45 is inserted into the lock hole 43 and the through hole 44.
The above embodiments are merely illustrative of the principles and effects of the present invention, and are not to be construed as limiting the invention. Modifications and variations can be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical spirit of the present invention be covered by the claims of the present invention.

Claims (5)

1. A temporary drainage wire fixing device for live working of a power distribution network comprises a first C-shaped piece (1), and is characterized in that: the first C-shaped part (1) is connected with a first screw rod (11) through threads at the lower side, the upper end of the first screw rod (11) extends into a locking plate (12) fixedly connected in the first C-shaped part (1), the lower end of the first screw rod (11) is fixedly connected with a first rotating handle (13), the first C-shaped part (1) is fixedly connected with a mounting seat (2) at the upper side, an inner cavity (21) is arranged in the mounting seat (2), a rotating disc (22) is assembled in the inner cavity (21) in a rotating manner, a plurality of arc-shaped locking grooves (23) are uniformly and annularly arranged on the rotating disc (22), two step holes (24) are formed in the inner wall of one side of the inner cavity (21), a first spring (25) is arranged in each step hole (24), a limiting block (26) is fixedly connected in each first spring (25), and a supporting rod (27) extending out of each step hole (24) is, two branch (27) stretch out step hole (24) common fixedly connected with one with arc locked groove (23) assorted arc latch fitting (28), mount pad (2) upside is equipped with rectangle through-hole (3) that is located between two branch (27), rectangle through-hole (3) inside slides and is equipped with rectangle pole (31), rectangle pole (31) lower extreme stretches into interior fixedly connected with of inner chamber (21) and arc latch fitting (28) assorted kicking piece (32), rectangle pole (31) downside cover is equipped with second spring (33), rectangle pole (31) upside stretches out rectangle through-hole (3) and rotates and is equipped with spacing handle (34), spacing handle (34) both sides all are equipped with supporting shoe (35), carousel (22) upside fixedly connected with stretches out swivel sleeve (4) of inner chamber (21), swivel sleeve (4) upper end fixedly connected with supporting seat (41), supporting seat (41) are articulated to have and rotate seat (42), supporting seat (41) annular evenly is equipped with a plurality of lockholes (43), rotate seat (42) left and right sides all be equipped with lockhole (43) assorted through-hole (44), it is equipped with lockhole (43) and through-hole (44) assorted bolt (45) to rotate seat (42), it is equipped with telescopic link mechanism to rotate seat (42) upside, telescopic link assembly upper end fixedly connected with wire clamping mechanism.
2. The temporary drainage wire fixing device for live working of the power distribution network of claim 1, which is characterized in that: telescopic link mechanism is including loop bar (5), loop bar (5) and rotation seat (42) fixed connection, loop bar (5) cover is equipped with bracing piece (51), loop bar (5) threaded connection have with bracing piece (51) assorted locking bolt (52).
3. The temporary drainage wire fixing device for live working of the power distribution network of claim 1, which is characterized in that: the thread clamping mechanism comprises a second C-shaped piece (53), a first thread clamping block (54) is arranged on the inner wall of the lower side of the second C-shaped piece (53), a second screw rod (542) is connected to the upper side of the second C-shaped piece (53) in a threaded manner, a second rotating handle (541) is fixedly connected to the upper side of the second screw rod (542), a second thread clamping block (55) matched with the first thread clamping block (54) is assembled on the lower side of the second screw rod (542) in a rotating manner, and a stabilizing assembly is arranged between the second thread clamping block (55) and the second C-shaped piece (53).
4. The temporary drainage wire fixing device for live working of the power distribution network, according to claim 3, is characterized in that: the stabilizing component comprises a sliding groove (56) and a sliding rod (57), the sliding groove (56) is formed in the inner wall of the second C-shaped part (53), the sliding rod (57) is assembled in the sliding groove (56), and the second C-shaped part (53) is sleeved with the sliding rod (57).
5. The temporary drainage wire fixing device for live working of the power distribution network of claim 1, which is characterized in that: the bolt (45) is fixedly connected with a magnet block (58).
CN202022363950.4U 2020-10-21 2020-10-21 A interim fixing device of drainage wire for distribution network live working Active CN213636887U (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN202022363950.4U CN213636887U (en) 2020-10-21 2020-10-21 A interim fixing device of drainage wire for distribution network live working

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202022363950.4U CN213636887U (en) 2020-10-21 2020-10-21 A interim fixing device of drainage wire for distribution network live working

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CN213636887U true CN213636887U (en) 2021-07-06

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CN202022363950.4U Active CN213636887U (en) 2020-10-21 2020-10-21 A interim fixing device of drainage wire for distribution network live working

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Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113904138A (en) * 2021-10-11 2022-01-07 广东电网有限责任公司 Can take electric installation formula ammeter fastener
CN114236725A (en) * 2021-12-27 2022-03-25 长春职业技术学院 Computer room thread fixing device
CN114352214A (en) * 2022-01-06 2022-04-15 茹国琼 Energy storage type direct-drive electric workover rig without guy rope net

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN113904138A (en) * 2021-10-11 2022-01-07 广东电网有限责任公司 Can take electric installation formula ammeter fastener
CN113904138B (en) * 2021-10-11 2023-06-02 广东电网有限责任公司 But electrified installation formula ammeter fastener
CN114236725A (en) * 2021-12-27 2022-03-25 长春职业技术学院 Computer room thread fixing device
CN114236725B (en) * 2021-12-27 2023-11-28 长春职业技术学院 Computer room wire fixing device
CN114352214A (en) * 2022-01-06 2022-04-15 茹国琼 Energy storage type direct-drive electric workover rig without guy rope net

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