CN112366579B - Novel anti-falling device for overhaul operation of top of high-voltage switch cabinet - Google Patents
Novel anti-falling device for overhaul operation of top of high-voltage switch cabinet Download PDFInfo
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- CN112366579B CN112366579B CN202011240935.9A CN202011240935A CN112366579B CN 112366579 B CN112366579 B CN 112366579B CN 202011240935 A CN202011240935 A CN 202011240935A CN 112366579 B CN112366579 B CN 112366579B
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/14—Structural association with mechanical loads, e.g. with hand-held machine tools or fans
Abstract
The invention discloses a novel anti-falling device for overhaul operation of a top of a high-voltage switch cabinet, which comprises a device body, an electric push rod, a fixed block and a servo motor, wherein the electric push rod is arranged in the middle of the inner side of the device body, the fixed block is fixedly arranged at the upper end of the electric push rod, a lateral rod is arranged on the side of the fixed block, a driving screw rod is arranged in the middle of a circular gear, a sliding wheel is arranged at the lower end of the driving screw rod, an adjusting block is arranged on a transverse screw rod, the upper end of a clamping rod is arranged at the lower end of a lifting platform, and a top plate is fixedly arranged at the upper end of the lifting platform. This a novel anti-falling device for high tension switchgear cabinet top overhauls operation can conveniently carry it and shift when using, improves the use flexibility of self, can effectively prevent to skid the possibility that appears falling because of the foot simultaneously at the maintainer during operation, and can conveniently carry necessary instrument at the in-process of overhauing.
Description
Technical Field
The invention relates to the technical field of high-voltage power distribution cabinets, in particular to a novel anti-falling device for overhaul operation of a cabinet top of a high-voltage power distribution cabinet.
Background
Along with the development of society, the transport of various power equipment's operation all can not leave the electric energy, carry out the in-process of electric energy transport for convenient to carry out centralized control to the circuit and all use high tension switchgear usually, high tension switchgear mainly is the electricity generation that is used for electric power system, transmission of electricity and distribution, when high tension switchgear internal element appears damaging after the use of a period of time, all need carry out timely maintenance usually in order to ensure high tension switchgear's normal work, nevertheless there is certain height because of high tension switchgear's high self when carrying out the maintenance operation on high tension switchgear cabinet top, generally can use anti-falling device to protect the maintainer in order to ensure maintainer's safety.
However, most of the current fall-protection devices have several problems:
firstly, most of the existing anti-falling devices are difficult to carry and push when different positions of the top of a high-voltage switch cabinet need to be overhauled due to large volume and heavy weight of the anti-falling devices in the using process, so that the using flexibility of the anti-falling devices is greatly reduced;
second, the anti-falling device of present majority when maintenance personal ascends a height and maintains, holistic protecting effect is relatively poor, thereby leads to the maintenance personal to skid because of the foot easily and the phenomenon that appears falling, and then very big reduction anti-falling device self the practicality and increased the danger coefficient of maintenance personal during operation, be difficult for carrying some necessary maintenance tools when the maintenance personal during operation simultaneously.
Therefore, a novel anti-falling device for the overhaul operation of the top of a high-voltage switch cabinet is provided so as to solve the problems.
Disclosure of Invention
The invention aims to provide a novel anti-falling device for maintenance operation of a high-voltage switch cabinet top, which solves the problems that most of anti-falling devices in the prior market are difficult to carry and push when different positions of the high-voltage switch cabinet top need to be maintained due to large volume and heavy weight of the anti-falling devices in the use process, so that the use flexibility of the anti-falling device is greatly reduced, the integral protection effect is poor when maintenance personnel perform climbing maintenance, the maintenance personnel are easy to fall due to foot slipping, the practicability of the anti-falling device is greatly reduced, the danger coefficient of the maintenance personnel during working is increased, and meanwhile, the maintenance personnel are difficult to carry necessary maintenance tools during working.
In order to achieve the purpose, the invention provides the following technical scheme: a novel anti-falling device for overhaul operation of the top of a high-voltage switch cabinet comprises a device body, an electric push rod, a fixed block and a servo motor, wherein the electric push rod is arranged in the middle of the inner side of the device body, the fixed block is fixedly arranged at the upper end of the electric push rod, a lateral rod is arranged on the lateral side of the fixed block, the upper end of the lateral rod is arranged at the inner end of a movable rack, a circular gear is arranged on the inner side of the movable rack, a driving screw is arranged in the middle of the circular gear, a sliding wheel is arranged at the lower end of the driving screw, the servo motor is fixedly connected to the right side of the upper part of the device body, a transverse screw is fixedly arranged at the left end of the servo motor, an adjusting block is arranged on the transverse screw, a clamping rod is arranged on the inner side of the adjusting block, the upper end of the clamping rod is arranged at the lower end of a lifting table, and a top plate is fixedly arranged at the upper end of the lifting table, and the avris of roof has seted up logical groove, the mid-mounting of horizontal screw rod has the drive bevel gear, and the avris of drive bevel gear installs driven bevel gear, the mid-mounting of driven bevel gear has the branch screw rod, and installs the regulating block on the branch screw rod to the gyro wheel pole is installed to the upper end of regulating block.
Preferably, sliding connection is arranged between the outer end of the movable rack and the inner side of the lower end of the device body, and the movable rack and the fixed block are connected with the end part of the lateral rod in a hinged mode.
Preferably, the circular gear is in meshed connection with the moving rack, the circular gear is in key connection with the driving screw, and the driving screw is in threaded connection with the sliding wheel.
Preferably, linking magnets are arranged on the lateral side of the sliding wheel and the inner end of the supporting block, the magnetic properties of the linking magnets on the sliding wheel and the supporting block are the same, and the supporting block is in sliding connection with the lateral side of the lower end of the device body.
Preferably, the supporting block and the side of the device body are connected with each other through a movable rod and a guide post, the supporting block and the device body are movably connected with the ends of the movable rod and the guide post respectively, and a sliding connection structure is formed between the movable rod and the guide post.
Preferably, all install the regulating block on horizontal screw rod and the branch screw rod, and be swing joint between the regulating block at horizontal screw rod both ends and the lower extreme of elevating platform and the tip of joint pole.
Preferably, the lower end of the roller rod is attached to the adjusting block, the adjusting block is of a right-angled trapezoid structure, the lower end of the adjusting block is in sliding connection with the device body, and the upper end of the roller rod and the vertical plate are of a welding integrated structure.
Preferably, be sliding connection between vertical board and the guard plate, and the logical groove one-to-one of guard plate and roof avris to through built-in spring interconnect between vertical board and the guard plate, the outside fixed mounting of guard plate has the piece that blocks moreover, blocks simultaneously and blocks through extrusion spring interconnect between avris and the roof of piece.
Preferably, the avris evenly distributed of protection plate at the elevating platform, and evenly distributed's protection plate inboard all installs the instrument and deposits the piece to constitute revolution mechanic between the upper end of piece and the protection plate is deposited to the instrument, deposit through reset spring interconnect between piece and the protection plate moreover.
Compared with the prior art, the invention has the beneficial effects that: the novel anti-falling device for the maintenance operation of the top of the high-voltage switch cabinet can be conveniently carried and transferred when in use, improves the use flexibility of the novel anti-falling device, can effectively prevent the possibility of falling due to slipping of feet when a maintainer works, and can conveniently carry necessary tools in the maintenance process;
1. the device is provided with the linking magnets, the sliding wheels can be arranged to facilitate pushing and transferring of the device body, the driving screw rod can be driven to rotate under the action of the circular gear by moving the moving rack, the sliding wheels can move upwards by rotating the driving screw rod, the sliding wheels are stored into the device body at the moment, after the sliding wheels move upwards, the linking magnets on the sides of the sliding wheels and the linking magnets on the inner ends of the supporting blocks are closer and closer, the supporting blocks move outwards under the action of repulsive force of the linking magnets, therefore, the contact area between the device bodies can be increased by the movement of the supporting blocks, and the stability of the device body during maintenance is improved;
2. The lifting platform is provided with a clamping rod, the adjusting block can move by the rotation of the transverse screw rod and the branch screw rod, the lifting platform can move upwards or downwards by the movement of the adjusting block under the action of the clamping rod, so that proper adjustment can be carried out according to actual conditions, the protecting plate can extend out through the through groove on the side of the top plate under the action of the roller rod when the adjusting block moves, the extending protecting plate can be used for getting up the periphery of the top plate, and the problem that a worker slips and falls due to the slipping of feet can be prevented through the protecting plate;
3. be provided with the instrument and deposit the piece, when the in-process of guard plate upward movement gradually, when the guard plate passed logical groove, the upper end that the piece was deposited to the instrument rotated around the guard plate inboard, and the piece was deposited to the instrument this moment enters into the inside of guard block, stretches out logical groove back when the guard block, and the piece is deposited to the instrument resets under reset spring's effect, thereby utilizes the instrument after resetting to deposit the piece and can make things convenient for the necessary instrument of depositing of maintenance staff normal this moment.
Drawings
FIG. 1 is a schematic cross-sectional front view of the present invention;
FIG. 2 is a schematic top view of the moving rack and circular gear of the present invention;
FIG. 3 is a schematic cross-sectional view of the movable rod and guide post of the present invention;
FIG. 4 is a schematic top view of the top plate and through slots of the present invention;
FIG. 5 is an enlarged view of the structure at A in FIG. 1 according to the present invention;
FIG. 6 is a cross-sectional structural schematic view of the vertical panel and the fender panel of the present invention;
FIG. 7 is a side view schematic of the drive bevel gear and the driven bevel gear of the present invention;
FIG. 8 is a side view of the guard and tool storage block of the present invention;
fig. 9 is a schematic top view of the tool storage block of the present invention.
In the figure: 1. a device body; 2. an electric push rod; 3. a fixed block; 4. a lateral rod; 5. moving the rack; 6. a circular gear; 7. a drive screw; 8. a sliding wheel; 9. a linking magnet; 10. a support block; 11. a movable rod; 12. a guide post; 13. a servo motor; 14. a transverse screw; 15. an adjusting block; 16. a clamping and connecting rod; 17. a lifting platform; 18. a top plate; 19. a through groove; 20. a drive bevel gear; 21. a driven bevel gear; 22. a branch screw; 23. a roller bar; 24. a vertical plate; 25. a protection plate; 26. a built-in spring; 27. a blocking block; 28. a compression spring; 29. a tool storage block; 30. a return spring.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Referring to fig. 1-9, the present invention provides a technical solution: a novel anti-falling device for overhaul operation of a top of a high-voltage switch cabinet comprises a device body 1, an electric push rod 2, a fixed block 3, a lateral rod 4, a movable rack 5, a circular gear 6, a driving screw 7, a sliding wheel 8, a linking magnet 9, a supporting block 10, a movable rod 11, a guide post 12, a servo motor 13, a transverse screw 14, an adjusting block 15, a clamping rod 16, a lifting platform 17, a top plate 18, a through groove 19, a driving bevel gear 20, a driven bevel gear 21, a branch screw 22, a roller rod 23, a vertical plate 24, a protective plate 25, a built-in spring 26, a blocking block 27, an extrusion spring 28, a tool storage block 29 and a reset spring 30, wherein the electric push rod 2 is installed in the middle of the inner side of the device body 1, the fixed block 3 is fixedly installed at the upper end of the electric push rod 2, the lateral rod 4 is installed at the lateral side of the fixed block 3, the upper end of the lateral rod 4 is installed at the inner end of the movable rack 5, and the inner side of the movable rack 5 is provided with a circular gear 6, the middle part of the circular gear 6 is provided with a driving screw 7, the lower end of the driving screw 7 is provided with a sliding wheel 8, the right side above the device body 1 is fixedly connected with a servo motor 13, and a transverse screw 14 is fixedly installed at the left end of the servo motor 13, an adjusting block 15 is installed on the transverse screw 14, and the inner side of the adjusting block 15 is provided with a clamping rod 16, the upper end of the clamping rod 16 is arranged at the lower end of the lifting platform 17, the upper end of the lifting platform 17 is fixedly provided with a top plate 18, and a through groove 19 is opened at the side of the top plate 18, a driving bevel gear 20 is installed at the middle part of the transverse screw 14, and a driven bevel gear 21 is installed at the side of the drive bevel gear 20, a branch screw 22 is installed at the middle of the driven bevel gear 21, and the branch screw 22 is provided with an adjusting block 15, and the upper end of the adjusting block 15 is provided with a roller rod 23.
Sliding connection is arranged between the outer end of the movable rack 5 and the inner side of the lower end of the device body 1, the movable rack 5 and the fixed block 3 are connected with the end portions of the lateral rods 4 in an articulated mode, and the movable rack 5 can slide towards the outer side of the device body 1 under the action of the lateral rods 4 connected in the articulated mode due to the movement of the fixed block 3.
The circular gear 6 is in meshed connection with the movable rack 5, the circular gear 6 is in key connection with the driving screw 7, the driving screw 7 is in threaded connection with the sliding wheel 8, the driving screw 7 can be rotated under the action of the circular gear 6 due to the movement of the movable rack 5, and the sliding wheel 8 can be moved upwards due to the rotation of the driving screw 7.
Linking magnets 9 are mounted on the side of the sliding wheel 8 and the inner end of the supporting block 10, the magnetic properties of the linking magnets 9 on the sliding wheel 8 and the supporting block 10 are the same, the supporting block 10 is in sliding connection with the side of the lower end of the device body 1, and the supporting block 10 can move towards the outer side of the device body 1 by the aid of the principle that the same-polarity linking magnets 9 repel each other when the sliding wheel 8 moves.
Through movable rod 11 and guide post 12 interconnect between the avris of supporting shoe 10 and device body 1, and be swing joint between supporting shoe 10 and device body 1 respectively and the tip of movable rod 11 and guide post 12, and constitute sliding connection structure between movable rod 11 and the guide post 12, the motion of supporting shoe 10 can make movable rod 11 slide in the inside of guide post 12, stability when utilizing the motion of movable rod 11 can improve the motion of supporting shoe 10.
Adjusting blocks 15 are mounted on the transverse screw 14 and the branch screw 22, the adjusting blocks 15 at the two ends of the transverse screw 14 and the lower ends of the lifting table 17 are movably connected with the end portion of the clamping rod 16, and the lifting table 17 can be pushed to move upwards under the action of the clamping rod 16 by the movement of the adjusting blocks 15 at the two ends of the transverse screw 14.
The lower end of the roller rod 23 and the adjusting block 15 are mutually attached, the adjusting block 15 is of a right-angled trapezoid structure, the lower end of the adjusting block 15 is in sliding connection with the device body 1, the upper end of the roller rod 23 and the vertical plate 24 are of a welding integrated structure, the roller rod 23 can be extruded by the adjusting block 15 under the action of the oblique edge, and the vertical plate 24 can move upwards by the aid of the roller rod 23.
Be sliding connection between vertical plate 24 and the guard plate 25, and the logical groove 19 one-to-one of guard plate 25 and roof 18 avris, and through built-in spring 26 interconnect between vertical plate 24 and the guard plate 25, and the outside fixed mounting of guard plate 25 has block 27, block simultaneously and pass through extrusion spring 28 interconnect between block 27 the change avris and the roof 18, thereby pass the logical groove 19 of roof 18 avris through guard plate 25 and can surround roof 18, and then prevent the problem that the maintainer appears falling because of the foot skids with this, improve the security of maintainer during operation.
The working principle is as follows: when the novel anti-falling device for the top maintenance operation of the high-voltage switch cabinet is used, firstly, as shown in figures 1-9, when the device body 1 needs to be moved and transferred, the device body 1 can be moved through the sliding wheel 8 at the bottom of the device body 1, and meanwhile, when the device is maintained, the electric push rod 2 is started, the fixed block 3 can move upwards by starting the electric push rod 2, the movable rack 5 can slide under the action of the lateral rod 4 by the movement of the fixed block 3, the driving screw 7 can rotate under the action of the circular gear 6 by the sliding of the movable rack 5, the sliding wheel 8 can move upwards by utilizing the rotation of the driving screw 7 until the sliding wheel 8 is contained in the inner side of the bottom of the device body 1, and meanwhile, in the process of the upward movement of the sliding wheel 8, the distance between the linking magnet 9 at the side of the sliding wheel 8 and the linking magnet 9 at the inner end of the supporting block 10 gradually approaches, at this time, the repulsive force between the connecting magnets 9 is gradually increased, the supporting block 10 moves towards the outer side of the device body 1 under the influence of the repulsive force, the movable rod 11 can slide in the guide post 12 after the supporting block 10 moves, the stability of the supporting block 10 during movement can be improved through the movement of the movable rod 11, the contact area between the bottom of the device body 1 and the ground can be increased through the movement of the supporting block 10, and therefore the stability of the device body 1 during movement is improved;
As shown in fig. 1 and 4-9, after the device body 1 is adjusted, a maintainer stands on the top plate 18, and then the servo motor 13 is turned on, the servo motor 13 can drive the transverse screw 14 to rotate, the transverse screw 14 can rotate to enable the adjusting block 15 to move inwards, the adjusting block 15 can move to drive the lifting platform 17 to move upwards under the action of the clamping rod 16, the lifting platform 17 moving upwards can conveniently perform proper adjustment according to the heights of high-voltage switch cabinets with different heights, meanwhile, the rotation of the transverse screw 14 can enable the branch screw 22 to rotate under the action of the driving bevel gear 20 and the driven bevel gear 21, the rotation of the branch screw 22 can also enable the adjusting block 15 to move, the adjusting block 15 can extrude the roller rod 23 under the action of the bevel edge in the moving process, and at this time, the roller rod 23 drives the vertical plate 24 and the protection plate 25 to move upwards, at the moment, the protection plate 25 moves upwards and then can penetrate through the through groove 19 on the side of the top plate 18 to extend out of the upper end of the top plate 18, the extended protection plate 25 can surround the top plate 18, the extended protection plate 25 can be used for protecting the maintainers during work of the maintainers, the problem that the maintainers fall due to slipping of feet is avoided, when the protection plate 25 extends out of the top plate 18, the stop blocks 27 on the protection plate 25 are in contact with the lower end of the top plate 18, and at the moment, when the clamping rod 16 continues to rise, the vertical plate 24 slides in the protection plate 25, so that the protection plate 25 is prevented from continuing to be tall, and normal overhaul of the maintainers is influenced;
As shown in fig. 1, 8 and 9, when the protection plate 25 extends out of the through slot 19, the tool storage block 29 is stressed, the upper end of the tool storage block 29 rotates around the protection plate 25, at this time, the tool storage block 29 is stored in the inner side of the protection plate 25, and then, when the protection plate 25 extends out of the top plate 18, the tool storage block 29 is reset under the action of the reset spring 30, so that necessary tools can be placed through the tool storage block 29 when an overhaul person overhauls the tool storage block.
Although the present invention has been described in detail with reference to the foregoing embodiments, it will be apparent to those skilled in the art that various changes in the embodiments and/or modifications of the invention can be made, and equivalents and modifications of some features of the invention can be made without departing from the spirit and scope of the invention.
Claims (7)
1. The utility model provides a novel anti-falling device for operation is overhauld on high tension switchgear cabinet top, includes device body (1), electric putter (2), fixed block (3) and servo motor (13), its characterized in that: the device is characterized in that an electric push rod (2) is arranged in the middle of the inner side of the device body (1), a fixed block (3) is fixedly arranged at the upper end of the electric push rod (2), a lateral rod (4) is arranged on the lateral side of the fixed block (3), the upper end of the lateral rod (4) is arranged at the inner end of a movable rack (5), a circular gear (6) is arranged on the inner side of the movable rack (5), a driving screw (7) is arranged in the middle of the circular gear (6), a sliding wheel (8) is arranged at the lower end of the driving screw (7), a servo motor (13) is fixedly connected to the right side of the upper portion of the device body (1), a transverse screw (14) is fixedly arranged at the left end of the servo motor (13), an adjusting block (15) is arranged on the transverse screw (14), a clamping rod (16) is arranged on the inner side of the adjusting block (15), and the upper end of the clamping rod (16) is arranged at the lower end of a lifting platform (17), a top plate (18) is fixedly installed at the upper end of the lifting platform (17), a through groove (19) is formed in the side of the top plate (18), a driving bevel gear (20) is installed in the middle of the transverse screw (14), a driven bevel gear (21) is installed on the side of the driving bevel gear (20), a branch screw (22) is installed in the middle of the driven bevel gear (21), an adjusting block (15) is installed on the branch screw (22), and a roller rod (23) is installed at the upper end of the adjusting block (15);
The lower end of the roller rod (23) is attached to the adjusting block (15), the adjusting block (15) is of a right-angled trapezoid structure, the lower end of the adjusting block (15) is in sliding connection with the device body (1), and the upper end of the roller rod (23) and the vertical plate (24) are of a welding integrated structure;
be sliding connection between vertical board (24) and guard plate (25), and logical groove (19) one-to-one of guard plate (25) and roof (18) avris to through built-in spring (26) interconnect between vertical board (24) and guard plate (25), the outside fixed mounting of guard plate (25) has stopper piece (27) moreover, blocks simultaneously and passes through extrusion spring (28) interconnect between avris and roof (18) of piece (27).
2. The novel anti-falling device for the maintenance operation of the top of the high-voltage switch cabinet as claimed in claim 1, characterized in that: the outer end of the movable rack (5) is connected with the inner side of the lower end of the device body (1) in a sliding mode, and the movable rack (5) and the fixed block (3) are connected with the end portion of the lateral rod (4) in a hinged mode.
3. The novel anti-falling device for the maintenance operation of the top of the high-voltage switch cabinet as claimed in claim 1, characterized in that: the circular gear (6) is in meshed connection with the movable rack (5), the circular gear (6) is in key connection with the driving screw (7), and the driving screw (7) is in threaded connection with the sliding wheel (8).
4. The novel anti-falling device for the maintenance operation of the top of the high-voltage switch cabinet as claimed in claim 1, characterized in that: linking magnets (9) are arranged on the lateral side of the sliding wheel (8) and the inner end of the supporting block (10), the magnetism of the linking magnets (9) on the sliding wheel (8) and the supporting block (10) is the same, and the supporting block (10) is in sliding connection with the lateral side of the lower end of the device body (1).
5. The novel anti-falling device for the overhaul operation of the top of the high-voltage switch cabinet as claimed in claim 4, wherein: the supporting block (10) and the side of the device body (1) are connected with each other through a movable rod (11) and a guide post (12), the supporting block (10) and the device body (1) are movably connected with the ends of the movable rod (11) and the guide post (12) respectively, and a sliding connection structure is formed between the movable rod (11) and the guide post (12).
6. The novel anti-falling device for the overhaul operation of the top of the high-voltage switch cabinet as claimed in claim 1, which is characterized in that: all install regulating block (15) on horizontal screw rod (14) and branch screw rod (22), and be swing joint between the tip of regulating block (15) and elevating platform (17) at horizontal screw rod (14) both ends and joint pole (16).
7. The novel anti-falling device for the maintenance operation of the top of the high-voltage switch cabinet as claimed in claim 1, characterized in that: protection plate (25) avris evenly distributed at elevating platform (17), and evenly distributed's protection plate (25) inboard all installs the instrument and deposits piece (29) to constitute revolution mechanic between upper end and protection plate (25) that the piece (29) was deposited to the instrument, deposit through reset spring (30) interconnect between piece (29) and protection plate (25) moreover to the instrument.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202011240935.9A CN112366579B (en) | 2020-11-09 | 2020-11-09 | Novel anti-falling device for overhaul operation of top of high-voltage switch cabinet |
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| CN202011240935.9A CN112366579B (en) | 2020-11-09 | 2020-11-09 | Novel anti-falling device for overhaul operation of top of high-voltage switch cabinet |
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| CN112366579A CN112366579A (en) | 2021-02-12 |
| CN112366579B true CN112366579B (en) | 2022-06-28 |
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| CN112366579A (en) | 2021-02-12 |
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