CN112843523A - Safety belt hanging device for transformer maintenance - Google Patents
Safety belt hanging device for transformer maintenance Download PDFInfo
- Publication number
- CN112843523A CN112843523A CN202110261688.9A CN202110261688A CN112843523A CN 112843523 A CN112843523 A CN 112843523A CN 202110261688 A CN202110261688 A CN 202110261688A CN 112843523 A CN112843523 A CN 112843523A
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- China
- Prior art keywords
- interlocking
- guide rail
- sliding
- safety belt
- slider
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- A—HUMAN NECESSITIES
- A62—LIFE-SAVING; FIRE-FIGHTING
- A62B—DEVICES, APPARATUS OR METHODS FOR LIFE-SAVING
- A62B35/00—Safety belts or body harnesses; Similar equipment for limiting displacement of the human body, especially in case of sudden changes of motion
- A62B35/0006—Harnesses; Accessories therefor
- A62B35/0025—Details and accessories
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- Health & Medical Sciences (AREA)
- General Health & Medical Sciences (AREA)
- Business, Economics & Management (AREA)
- Emergency Management (AREA)
- Transmission Devices (AREA)
Abstract
The invention discloses a safety belt hanging device for transformer maintenance, which comprises a ladder and hanging slider assemblies, wherein the ladder is fixed on the side edge of transformer equipment, a guide rail is fixed in one side of the ladder along the length direction of the ladder, the guide rail is connected with two hanging slider assemblies capable of sliding in the guide rail in a matching way, each hanging slider assembly is provided with a hook, and a safety belt is respectively connected with the hooks on the two hanging slider assemblies through two hanging ropes; an interlocking rack is fixed in the direction away from the guide rail in the hanging slider assembly, the interlocking racks on the two hanging slider assemblies extend oppositely and penetrate through the other hanging slider assembly, and when one hanging slider assembly slides, the other hanging slider assembly is locked in the guide rail by the interlocking rack. Compared with the prior art, the safety device ensures the safety of high-altitude operation, prevents the safety belt from being loosened due to misoperation, and has good stability of the connection of the suspension sliding block assembly and the guide rail.
Description
Technical Field
The invention relates to the technical field of safety belt hanging devices, in particular to a safety belt hanging device for transformer maintenance.
Background
According to the national regulations, a safety belt is required to be used for high-altitude operation, and the safety belt is checked before being used and is periodically tested. Working on scaffolding without scaffolding or without railings, at heights above 1.5m, it is necessary to use safety belts or to take other reliable safety measures. The safety belt must be hung on a firm component or a steel frame or a steel wire rope specially used for the safety belt, and the safety belt cannot be hung at a low height.
Among the current substation equipment, the maintainer overhauls the operation through the eminence of cat ladder to substation equipment, need use the safety belt when using the cat ladder, among the prior art, the maintainer carries out safety protection through tying the double hook safety belt, at the in-process that climbs and descend, need be repeated to hang two couples in proper order and guarantee the security when using the cat ladder at the cat ladder jacket, but, need untie repeatedly and hang the safety belt couple when using the double hook safety belt, complex operation for work efficiency is low. In addition, repeated unlocking and hooking of the hooks may result in untightening or inadvertent unlocking of both hooks, which may result in a safety accident.
Therefore, there is a need to provide a safety belt suspension device for power transformation maintenance to solve the problems of the background art.
Disclosure of Invention
In order to achieve the purpose, the invention provides the following technical scheme: a safety belt hanging device for power transformation maintenance comprises a ladder stand, a guide rail and hanging slider assemblies, wherein the ladder stand is fixed on the side edge of power transformation equipment, the guide rail is fixed in one side of the ladder stand along the length direction of the ladder stand, the guide rail is connected with two hanging slider assemblies capable of sliding in the guide rail in a matching mode, each hanging slider assembly is provided with a hook, and a safety belt is connected with the hooks on the two hanging slider assemblies through two hanging ropes;
an interlocking rack is fixed in the direction away from the guide rail in the hanging slider assembly, the interlocking racks on the two hanging slider assemblies extend oppositely and penetrate through the other hanging slider assembly, and when one hanging slider assembly slides, the other hanging slider assembly is locked in the guide rail by the interlocking rack.
Further, preferably, the suspension sliding block assembly comprises a sliding block shell and a positioning shaft, the sliding block shell is slidably connected with the guide rail, a concave cavity with two sides embracing the guide rail is arranged in the sliding block shell, and the groove is internally and fixedly provided with the positioning shaft;
an interlocking gear is rotatably arranged in the positioning shaft and meshed with an interlocking rack in the other hanging sliding block assembly, an interlocking turntable is further fixed below the interlocking gear and rotatably connected with the positioning shaft, a protruding push block is arranged at the edge of the interlocking turntable, and arc-shaped grooves are formed in two sides of the push block.
Further, preferably, the suspension sliding block assembly further comprises a traveling gear, the traveling gear is rotatably connected in the positioning shaft, and the traveling gear is located below the interlocking turntable and embedded in the track of the guide rail;
and a guide rail rack is arranged in one side in the track of the guide rail and meshed with the walking gear.
Preferably, a ratchet groove is formed in one surface, close to the direction of the interlocking gear, of the walking gear, a plurality of ratchets are distributed on the inner circumference of the ratchet groove, and the ratchets can lock the walking gear to rotate in the direction of moving downwards towards the sliding block shell when abutting against the ratchet groove.
Further, as a preferred option, a positioning disc is fixed in a positioning shaft between the walking gear and the interlocking turntable, a plurality of straight sliding grooves extending along the radius direction are formed in the circumference of the positioning disc, an adjusting turntable is rotatably connected in the positioning shaft between the positioning disc and the interlocking turntable, and a plurality of arc-shaped sliding grooves corresponding to the straight sliding grooves are formed in the circumference of the adjusting turntable;
and a sliding pin penetrates through a hole formed by overlapping each straight sliding groove and each arc sliding groove, extends into the ratchet groove and is fixedly connected with the ratchet.
Further, preferably, a torsion spring is provided between the ratchet and the slide pin, and the torsion spring provides a force for rotating the ratchet.
Further, as an optimization, a push rod is erected at the edge of the adjusting turntable and extends into the arc-shaped groove of the corresponding push block;
the interlocking turntable can rotate in one direction until the push block pushes the push rod to drive the adjusting turntable to rotate, so that each ratchet locks the ratchet groove, and the distance between the two suspension sliding block assemblies reaches a threshold value;
when the interlocking turntable rotates to the other side of the push block to push the push rod to drive the adjusting turntable to rotate, each ratchet unlocks the ratchet groove, and the distance between the two suspension sliding block assemblies reaches the threshold value at the other end.
Furthermore, preferably, a plurality of liner adjusting components are arranged in positions, corresponding to two sides of the guide rail, of two sides of the sliding block shell;
the liner adjusting assembly comprises a sliding liner and adjusting screws, adjusting holes are formed in the two sides of the sliding block shell and in contact with the two sides of the guide rail, the sliding liner is arranged in a gap between the outside of each adjusting hole and the guide rail, and the pressing force of the sliding liner can be adjusted through the adjusting screws penetrating into the adjusting holes from the outside.
Furthermore, as preferred, the sliding gasket is fixed with a clamp plate on one side close to the adjusting hole, the clamp plate can move in the adjusting hole, a positioning pin is arranged between the clamp plate and the tail end of the adjusting screw, the tail end of the positioning pin is embedded into the clamp plate for a certain distance, and a round spring is sleeved between the pin head of the positioning pin and the clamp plate.
Compared with the prior art, the invention has the beneficial effects that:
in the invention, in the sliding process of the two suspension sliding block assemblies, the interlocking racks of the two suspension sliding block assemblies interact with each other to drive the interlocking gear to drive the interlocking turntable to rotate in one direction, and the push block pushes the push rod to drive the adjusting turntable to rotate, so that each ratchet wheel is locked in the ratchet wheel groove, the suspension sliding block assembly below the suspension sliding block assembly is locked, and the suspension sliding block assembly above the suspension sliding block assembly is unlocked in the same way;
move two in proper order repeatedly and hang the slider assembly, can accomplish and descend in the cat ladder, at the in-process that descends, have one to hang the slider assembly all the time and be in the locking state, consequently ensured high altitude construction's security, prevent because misoperation leads to the safety belt to be loosened.
In addition, the tightness degree of the sliding liner and the two sides of the guide rail can be adjusted by adjusting the screwing-in depth of the adjusting screw, so that the optimal sliding damping is obtained, the sliding liner has a self-lubricating function, a lubricating material can be generated automatically in the sliding process, the stability of connection between the suspension sliding block assembly and the guide rail is ensured, and the sliding teeth of gear parts in the suspension sliding block assembly are prevented.
Drawings
Fig. 1 is a schematic structural diagram of a safety belt suspension device for power transformation maintenance;
FIG. 2 is a schematic cross-sectional view taken at A-A of a safety belt suspension for substation maintenance;
FIG. 3 is a schematic structural view of a guide rail and suspension slider assembly of a safety belt suspension device for power transformation maintenance;
FIG. 4 is a schematic view of an interlocking gear structure of a safety belt suspension device for power transformation maintenance;
FIG. 5 is a schematic diagram of an adjusting turntable of a safety belt suspension device for power transformation maintenance;
FIG. 6 is a schematic diagram of a pad adjustment assembly of a belt hanger for substation maintenance;
in the figure: 1. climbing a ladder; 2. a guide rail; 21. a rail rack; 3. suspending the slider assembly; 4. hooking; 5. an interlocking rack; 6. a pad adjustment assembly; 30. positioning the shaft; 31. a slider housing; 32. an interlocking gear; 33. an interlocking turntable; 34. a push block; 35. a traveling gear; 36. a ratchet groove; 37. adjusting the turntable; 371. an arc-shaped chute; 372. a push rod; 38. a ratchet; 39. positioning a plate; 391. a straight chute; 381. a sliding pin; 61. a sliding liner; 62. adjusting the screw; 63. an adjustment hole; 64. positioning pins; 65. a round spring; 66. and (7) pressing a plate.
Detailed Description
Referring to fig. 1, in the embodiment of the present invention, a safety belt suspension device for power transformation maintenance includes a ladder stand 1, a guide rail 2, and suspension slider assemblies 3, where the ladder stand 1 is fixed on a side of a power transformation device, the guide rail 2 is fixed in one side of the ladder stand 1 along a length direction thereof, the guide rail 2 is connected to two suspension slider assemblies 3 capable of sliding therein in a matching manner, each suspension slider assembly 3 is provided with a hook 4, and a safety belt is connected to the hooks 4 of the two suspension slider assemblies 3 through two suspension ropes respectively;
an interlocking rack 5 is fixed in the direction away from the guide rail 2 in the hanging slider component 3, the interlocking racks 5 on the two hanging slider components 3 extend oppositely and penetrate through the other hanging slider component 3, and when one of the hanging slider components 3 can slide by the interlocking rack 5, the other hanging slider component 3 is locked in the guide rail 2.
Referring to fig. 2 and 3, in the present embodiment, the suspension slider assembly 3 includes a slider housing 31 and a positioning shaft 30, the slider housing 31 is slidably connected to the guide rail 2, a concave cavity is formed in the slider housing 31, two sides of the concave cavity embrace the guide rail, and the positioning shaft 30 is fixed in the concave cavity;
an interlocking gear 32 is rotatably arranged in the positioning shaft 30, the interlocking gear 32 is meshed with an interlocking rack 5 in another hanging slide block assembly 3, an interlocking turntable 33 is further fixed below the interlocking gear 32, the interlocking turntable 33 is rotatably connected with the positioning shaft 30, a convex push block 34 is arranged on the edge of the interlocking turntable 33, and arc-shaped grooves are formed in two sides of the push block 34.
Referring to fig. 2 and 4, in the present embodiment, the suspension slider assembly 3 further includes a traveling gear 35, the traveling gear 35 is rotatably connected to the positioning shaft 30, and the traveling gear 35 is located below the interlocking turntable 33 and embedded in the track of the guide rail 2;
a rail rack 21 is provided in one side inside the track of the rail 2, and the rail rack 21 is engaged with the traveling gear 35, that is, when the slider housing 31 slides along the rail 2, the traveling gear 35 rotates along the rail rack 21.
Referring to fig. 2 and 4, in the present embodiment, a ratchet groove 36 is formed on one surface of the traveling gear 35 near the direction of the interlocking gear 32, a plurality of ratchets 38 are distributed on an inner circumference of the ratchet groove 36, and when the ratchets 38 abut against the ratchet groove 36, the traveling gear 35 can be locked to rotate in a downward moving direction of the slider housing 31.
Referring to fig. 2 and 5, in the present embodiment, a positioning plate 39 is fixed in the positioning shaft 30 between the traveling gear 35 and the interlocking turntable 33, a plurality of straight sliding grooves 391 extending along the radius direction are formed on the circumference of the positioning plate 39, an adjusting turntable 37 is rotatably connected in the positioning shaft 30 between the positioning plate 39 and the interlocking turntable 33, and a plurality of arc-shaped sliding grooves 371 corresponding to the straight sliding grooves 391 are formed on the circumference of the adjusting turntable 37;
and a sliding pin 381 penetrates through a hole formed by overlapping each straight sliding chute 391 and each arc sliding chute 371, and each sliding pin 381 extends into the ratchet groove 36 and is fixedly connected with the ratchet 38.
That is, when the adjustment dial 37 rotates, the hole formed by the overlapping of the straight sliding groove 391 and the arc sliding groove 371 changes, so that the sliding pin 381 drives the ratchet 38 to move back and forth, and the ratchet 38 can abut against or be away from the ratchet groove 36, thereby locking or releasing the rotation of the traveling gear 35.
In this embodiment, a torsion spring is disposed between the ratchet 38 and the sliding pin 381, and the torsion spring provides a force for rotating the ratchet 38.
Referring to fig. 2 and 5, in the present embodiment, a push rod 372 is erected on an edge of the adjusting turntable 37, and the push rod 372 extends into an arc-shaped groove of the corresponding push block 34;
moreover, the interlocking dial 33 can rotate in one direction until the push block 34 pushes the push rod 372 to drive the adjusting dial 37 to rotate, so that each ratchet 38 locks the ratchet groove 36, and at this time, the distance between the two suspension sliding block assemblies 3 reaches the threshold value;
when the interlocking dial 33 rotates in the other direction and the push rod 372 is pushed by the other side of the push block 34 to rotate the adjusting dial 37, each ratchet 38 unlocks the ratchet groove 36, and the distance between the two suspension slider assemblies 3 reaches the threshold value at the other end.
Referring to fig. 2 and fig. 6, in the present embodiment, a plurality of pad adjusting assemblies 6 are disposed in positions corresponding to two sides of the guide rail 2 on two sides of the slider housing 31;
the liner adjusting assembly 6 comprises a sliding liner 61 and an adjusting screw 62, adjusting holes 63 are formed in the direction of the contact surface of the two sides of the slider shell 31 and the two sides of the guide rail 2, the sliding liner 61 is arranged in a gap between the outside of the adjusting holes 63 and the guide rail 2, and the pressing force of the sliding liner 61 can be adjusted through the adjusting screw 62 penetrating into the adjusting holes 63 from the outside.
In this embodiment, a pressing plate 66 is fixed on one side of the sliding pad 61 close to the adjusting hole 63, the pressing plate 66 can move in the adjusting hole 63, a positioning pin 64 is arranged between the pressing plate 66 and the tail end of the adjusting screw 62, the tail end of the positioning pin 64 is embedded into the pressing plate 66 for a certain distance, and a round spring 65 is sleeved between the pin head of the positioning pin 64 and the pressing plate 66;
the sliding gasket 61 is adhered to the pressing plate 66 through elastic epoxy glue, and the tightness degree between the sliding gasket 61 and the two sides of the guide rail 2 can be adjusted by adjusting the screwing-in depth of the adjusting screw 62, so that the optimal sliding damping is obtained;
the sliding liner 61 is made of PTFE material, has a self-lubricating function, and can generate a self-lubricating material in the sliding process.
When the construction method is specifically implemented, a safety belt tied on a constructor is respectively connected with the hooks 4 on the two suspension sliding block assemblies 3 through two hanging ropes, and the suspension sliding block assemblies 3 do not lock up in the rotating direction of the ratchet wheel grooves 36 in the suspension sliding block assemblies 3 to move upwards in the guide rail 2, so that the constructor drives the suspension sliding block assemblies 3 to move upwards in an ascending manner;
during descending, a constructor slides the lower suspension sliding block assembly 3 to a position which is farthest away from the upper suspension sliding block assembly 3;
in the sliding process, the interlocking racks 5 of the two are interacted, the interlocking gear 32 is driven to drive the interlocking turntable 33 to rotate in one direction, the push block 34 pushes the push rod 372 to drive the adjusting turntable 37 to rotate, each ratchet 38 locks the ratchet groove 36, and the lower suspension sliding block assembly 3 is locked;
meanwhile, the interlocking turntable 33 in the upper suspension sliding block assembly 3 rotates to the other side of the push block 34 to push the push rod 372 to drive the adjusting turntable 37 to rotate, so that each ratchet 38 unlocks the ratchet groove 36, and at the moment, the upper suspension sliding block assembly 3 is unlocked;
similarly, the upper suspension slide block assembly 3 is slid to a position closest to the lower suspension slide block assembly 3, and at this time, the upper suspension slide block assembly 3 is locked and the lower suspension slide block assembly 3 is unlocked;
the descending in the ladder stand 1 can be completed by repeatedly and sequentially moving the two hanging slide block assemblies 3, and one hanging slide block assembly 3 is always in a locking state in the descending process, so that the safety of high-altitude operation is ensured, and the safety belt is prevented from being loosened due to misoperation;
in addition, the tightness degree of the sliding gasket 61 and the two sides of the guide rail 2 can be adjusted by adjusting the screwing depth of the adjusting screw 62, so that the optimal sliding damping is obtained, and the stability of the connection of the suspension sliding block assembly 3 and the guide rail 2 is ensured.
The above description is only for the preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art should be considered to be within the technical scope of the present invention, and the technical solutions and the inventive concepts thereof according to the present invention are equivalent to or changed within the technical scope of the present invention.
Claims (9)
1. A safety belt hanging device for power transformation maintenance comprises a ladder (1), guide rails (2) and hanging slider assemblies (3), and is characterized in that the ladder (1) is fixed on the side edge of power transformation equipment, the guide rails (2) are fixed in one side of the ladder (1) along the length direction of the ladder, the guide rails (2) are connected with two hanging slider assemblies (3) capable of sliding in the guide rails in a matching mode, each hanging slider assembly (3) is provided with a hook (4), and a safety belt is connected with the hooks (4) on the two hanging slider assemblies (3) through two hanging ropes;
hang in slider component (3) and be fixed with an interlocking rack (5) in the direction of keeping away from guide rail (2), interlocking rack (5) on two slider component (3) that hang extend in opposite directions, and run through another and hang slider component (3), interlocking rack (5) can make one of them hang when slider component (3) slide, another hangs slider component (3) and locks in guide rail (2).
2. The safety belt suspension device for power transformation maintenance according to claim 1, wherein the suspension slider assembly (3) comprises a slider housing (31) and a positioning shaft (30), the slider housing (31) is slidably connected with the guide rail (2), a concave cavity with two sides embracing the guide rail is arranged in the slider housing (31), and the positioning shaft (30) is further fixed in the concave cavity;
an interlocking gear (32) is rotatably arranged in the positioning shaft (30), the interlocking gear (32) is meshed with an interlocking rack (5) in the other suspension sliding block assembly (3), an interlocking rotating disc (33) is further fixed below the interlocking gear (32), the interlocking rotating disc (33) is rotatably connected with the positioning shaft (30), a convex pushing block (34) is arranged on the edge of the interlocking rotating disc (33), and arc-shaped grooves are formed in two sides of the pushing block (34).
3. The safety belt suspension device for power transformation maintenance according to claim 2, characterized in that the suspension block assembly (3) further comprises a traveling gear (35), the traveling gear (35) is rotatably connected in the positioning shaft (30), the traveling gear (35) is positioned below the interlocking turntable (33) and embedded in the track of the guide rail (2);
a guide rail rack (21) is arranged in one side in the track of the guide rail (2), and the guide rail rack (21) is meshed with the walking gear (35).
4. The safety belt suspension device for power transformation maintenance according to claim 3, wherein a ratchet groove (36) is formed in one surface of the walking gear (35) close to the direction of the interlocking gear (32), a plurality of ratchets (38) are distributed on the inner circumference of the ratchet groove (36), and when the ratchets (38) abut against the ratchet groove (36), the ratchet groove can lock the walking gear (35) to rotate in the downward moving direction of the slider shell (31).
5. The safety belt suspension device for power transformation maintenance according to claim 4, wherein a positioning disc (39) is fixed in a positioning shaft (30) between the walking gear (35) and the interlocking turntable (33), a plurality of straight sliding grooves (391) extending along the radius direction are formed in the positioning disc (39) at the periphery, an adjusting turntable (37) is rotatably connected in the positioning shaft (30) between the positioning disc (39) and the interlocking turntable (33), and a plurality of arc-shaped sliding grooves (371) corresponding to the straight sliding grooves (391) are formed in the adjusting turntable (37) at the periphery;
and a sliding pin (381) penetrates through a hole formed by overlapping each straight sliding chute (391) and each arc sliding chute (371), and each sliding pin (381) extends into the ratchet groove (36) and is fixedly connected with the ratchet (38).
6. A safety belt suspension device for power transformation service as claimed in claim 5, characterized in that a torsion spring is provided between the ratchet (38) and the sliding pin (381), said torsion spring providing a force to rotate the ratchet (38).
7. The safety belt suspension device for power transformation maintenance of claim 5, characterized in that a push rod (372) is erected on the edge of the adjusting turntable (37), and the push rod (372) extends into an arc-shaped groove of the corresponding push block (34);
the interlocking turntable (33) can rotate in one direction until the push block (34) pushes the push rod (372) to drive the adjusting turntable (37) to rotate, so that each ratchet (38) locks the ratchet groove (36), and the distance between the two suspension sliding block assemblies (3) reaches a threshold value;
when the interlocking turntable (33) rotates to the other direction and the other side of the push block (34) pushes the push rod (372) to drive the adjusting turntable (37) to rotate, each ratchet (38) unlocks the ratchet groove (36), and the distance between the two suspension sliding block assemblies (3) reaches the threshold value at the other end.
8. The safety belt suspension device for power transformation maintenance according to claim 2, characterized in that a plurality of pad adjusting assemblies (6) are arranged in positions on two sides of the sliding block shell (31) corresponding to two sides of the guide rail (2);
liner adjustment subassembly (6) are including sliding pad (61), adjusting screw (62), adjusting hole (63) have been seted up with the face direction of guide rail (2) both sides contact to slider casing (31) both sides, be equipped with sliding pad (61) in adjusting hole (63) outer and the clearance of guide rail (2), and can adjust the dynamics of compressing tightly of sliding pad (61) through adjusting screw (62) in penetrating into adjusting hole (63) from the outside.
9. The safety belt suspension device for power transformation maintenance according to claim 8, wherein a pressure plate (66) is fixed on one side of the sliding gasket (61) close to the adjusting hole (63), the pressure plate (66) can move in the adjusting hole (63), a positioning pin (64) is arranged between the pressure plate (66) and the tail end of the adjusting screw (62), the tail end of the positioning pin (64) is embedded into the pressure plate (66) for a certain distance, and a round spring (65) is sleeved between the pin head of the positioning pin (64) and the pressure plate (66).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261688.9A CN112843523A (en) | 2021-03-10 | 2021-03-10 | Safety belt hanging device for transformer maintenance |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110261688.9A CN112843523A (en) | 2021-03-10 | 2021-03-10 | Safety belt hanging device for transformer maintenance |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN112843523A true CN112843523A (en) | 2021-05-28 |
Family
ID=75993872
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110261688.9A Withdrawn CN112843523A (en) | 2021-03-10 | 2021-03-10 | Safety belt hanging device for transformer maintenance |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112843523A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113786567A (en) * | 2021-09-24 | 2021-12-14 | 国网山东省电力公司曲阜市供电公司 | Safety belt suspension device and method for transformer maintenance |
-
2021
- 2021-03-10 CN CN202110261688.9A patent/CN112843523A/en not_active Withdrawn
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113786567A (en) * | 2021-09-24 | 2021-12-14 | 国网山东省电力公司曲阜市供电公司 | Safety belt suspension device and method for transformer maintenance |
| CN113786567B (en) * | 2021-09-24 | 2022-06-03 | 国网山东省电力公司曲阜市供电公司 | Safety belt suspension device and method for transformer maintenance |
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Application publication date: 20210528 |
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| WW01 | Invention patent application withdrawn after publication |