CN115340042A - Electric maintenance vehicle for switch cabinet circuit breaker - Google Patents
Electric maintenance vehicle for switch cabinet circuit breaker Download PDFInfo
- Publication number
- CN115340042A CN115340042A CN202210955021.3A CN202210955021A CN115340042A CN 115340042 A CN115340042 A CN 115340042A CN 202210955021 A CN202210955021 A CN 202210955021A CN 115340042 A CN115340042 A CN 115340042A
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- CN
- China
- Prior art keywords
- circuit breaker
- switch cabinet
- maintenance vehicle
- electric
- motor
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/0625—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement with wheels for moving around the floor
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/06—Lifting frames, e.g. for lifting vehicles; Platform lifts with platforms supported by levers for vertical movement
- B66F7/065—Scissor linkages, i.e. X-configuration
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B66—HOISTING; LIFTING; HAULING
- B66F—HOISTING, LIFTING, HAULING OR PUSHING, NOT OTHERWISE PROVIDED FOR, e.g. DEVICES WHICH APPLY A LIFTING OR PUSHING FORCE DIRECTLY TO THE SURFACE OF A LOAD
- B66F7/00—Lifting frames, e.g. for lifting vehicles; Platform lifts
- B66F7/28—Constructional details, e.g. end stops, pivoting supporting members, sliding runners adjustable to load dimensions
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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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- Engineering & Computer Science (AREA)
- Life Sciences & Earth Sciences (AREA)
- Geology (AREA)
- Mechanical Engineering (AREA)
- Structural Engineering (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Patch Boards (AREA)
Abstract
The invention discloses an electric maintenance vehicle for a switch cabinet breaker, which comprises: the base comprises a bottom plate and a hollow steel frame; the operation handrail is used for controlling the direction and the speed of the electric maintenance vehicle, and an instruction control board is arranged in the operation handrail; an auxiliary walking motor arranged on one side of the bottom plate; install the lift subassembly on the base and install the electrical equipment box in the box body, wherein: the circuit breaker bearing platform is provided with a circuit breaker bearing slide rail and a width adjusting motor connected with the circuit breaker bearing slide rail; the electric equipment box is provided with a controller which is respectively connected with the auxiliary walking motor, the lifting push rod motor and the width adjusting motor. The electric maintenance vehicle for the switch cabinet circuit breakers can be suitable for detecting the switch cabinet circuit breakers with various specifications and sizes, and the detection efficiency is improved; the structure is simple, and the cost is easy to control and control.
Description
Technical Field
The invention relates to the technical field of power equipment maintenance, in particular to an electric maintenance vehicle for a switch cabinet breaker.
Background
High-voltage switchgear is an important component of power transmission and distribution, and is an important power transmission and distribution device in the power industry. The conventional transfer trolley for the circuit breaker used in the prior art has the defects of poor operating performance, unreliable circuit breaker locking and the like due to unreasonable structural design. In the actual use process, the problems that the height adjustment is slow in lifting, the height and width specifications are multiple, the universality is poor, corresponding transfer vehicles are required to be equipped for circuit breakers of different specifications, the production cost is increased, a large amount of occupied field space is also caused, and the like are generally encountered.
Meanwhile, the existing transfer trolley and the circuit breaker are not provided with reliable locking devices, the gravity center of the transfer trolley is too high, and the problems of equipment damage and even personnel safety caused by forward tilting and overturning are easy to occur in the conveying process. Because no hoisting equipment is arranged on the site, sometimes the circuit breaker needs to fall to the ground from a transfer trolley or be lifted to the transfer trolley from the ground, the ground of the transfer trolley is high, the high-current circuit breaker is heavy, the transfer is difficult, the labor intensity of personnel is high, the whole operation is troublesome and laborious, the power failure time is prolonged, and the power supply reliability is reduced.
Disclosure of Invention
The technical problem to be solved by the invention is to provide the electric maintenance vehicle for the circuit breakers of the switch cabinets, which is suitable for transferring the circuit breakers of the switch cabinets with various specifications and sizes and improves the detection efficiency; the structure is simple, and the cost is easy to control and control.
In order to solve the technical problem, the invention provides an electric maintenance vehicle for a switch cabinet breaker, which comprises: the base comprises a bottom plate and a hollow steel frame, the hollow steel frame is enclosed around the bottom plate to form a hollow box body, and the top end and the peripheral side of the box body are provided with openings; the operation handrail is used for controlling the direction and the speed of the electric maintenance vehicle, one end of the operation handrail is assembled and connected with the base, and an instruction control board is arranged in the operation handrail; an auxiliary walking motor arranged on one side of the bottom plate; install the lifting unit on the base, lifting unit includes: the lifting rod, a circuit breaker bearing platform which can be connected to the lifting rod in a sliding mode, a telescopic support frame and a lifting push rod motor, wherein two opposite ends of the telescopic support frame are connected to the base and the bottom of the circuit breaker bearing platform in a sliding mode respectively; and an electrical equipment box installed in the box body, wherein: the circuit breaker bearing platform is provided with a circuit breaker bearing slide rail and a width adjusting motor connected with the circuit breaker bearing slide rail; the electrical equipment box is provided with a controller which is respectively connected with an auxiliary walking motor, a lifting push rod motor and a width adjusting motor, wherein: the instruction control panel is connected with the controller.
Wherein, lifting unit still includes: install on circuit breaker load-bearing platform for with the locking of high-voltage board cabinet door detain the spring bolt that phase adaptation card was held, wherein: the lock tongue is buckled on a locking buckle position on a cabinet door of the switch cabinet to lock the position of the electric maintenance vehicle.
The width adjusting motor adjusts and changes the limiting width of the circuit breaker bearing slide rail, and the circuit breaker bearing slide rail is assembled on two opposite sides of the circuit breaker bearing platform.
Wherein, be equipped with the battery in the electrical equipment case, the battery links to each other with the controller.
Wherein, one side of electrical equipment case is equipped with the interface that charges, and the interface that charges is connected with the battery electricity.
Wherein, be equipped with the directive wheel on the base, wherein: the movement direction, speed and rotating speed of the auxiliary walking motor are controlled by the instruction control panel and the controller in the operation handrail.
Wherein, the telescopic support frame is a diamond telescopic frame structure.
The instruction control panel is provided with a plurality of keys, and the keys comprise any one of electric quantity indication keys, loudspeakers, forward and backward movement control keys and speed control keys.
The electric maintenance vehicle for the switch cabinet circuit breaker has the following beneficial effects: electronic tool car of cubical switchboard circuit breaker includes: the base comprises a bottom plate and a hollow steel frame, the hollow steel frame is enclosed around the bottom plate to form a hollow box body, and the top end and the peripheral side of the box body are provided with openings; the operation handrail is used for controlling the direction and the speed of the electric maintenance vehicle, one end of the operation handrail is assembled and connected with the base, and an instruction control board is arranged in the operation handrail; an auxiliary walking motor arranged on one side of the bottom plate; install the lifting unit on the base, lifting unit includes: the lifting rod, the circuit breaker bearing platform which can be connected to the lifting rod in a sliding mode, the telescopic support frame and the lifting push rod motor are connected, the two opposite ends of the telescopic support frame are connected to the bottom of the base and the bottom of the circuit breaker bearing platform in a sliding mode respectively, and the lifting push rod motor is connected with the telescopic support frame; and an electrical equipment box installed in the box body, wherein: the circuit breaker bearing platform is provided with a circuit breaker bearing slide rail and a width adjusting motor connected with the circuit breaker bearing slide rail; the electrical equipment box is provided with a controller which is respectively connected with an auxiliary walking motor, a lifting push rod motor and a width adjusting motor, wherein: the instruction control board is connected with the controller, so that the detection of the switch cabinet circuit breakers of various specifications and sizes can be realized, and the detection efficiency is improved; the structure is simple, and the cost is easy to control and control.
Drawings
In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the drawings without creative efforts.
Fig. 1 is a schematic perspective view of an electric maintenance vehicle for a switch cabinet breaker according to an embodiment of the present invention.
Fig. 2 is a schematic structural diagram of the electric overhaul vehicle for the switch cabinet breakers, which is provided by the embodiment of the invention and is adjusted in adaptive height.
Fig. 3 is a schematic structural view of a main view angle of the electric maintenance vehicle for the switch cabinet circuit breaker according to the embodiment of the invention.
Fig. 4 is a schematic structural diagram of a side view of the electric maintenance vehicle for the switch cabinet circuit breaker according to the embodiment of the invention.
Fig. 5 is a schematic structural diagram of a top view of the electric maintenance vehicle for the switch cabinet circuit breaker according to the embodiment of the invention.
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 obtained by a person skilled in the art without inventive step based on the embodiments of the present invention, are within the scope of protection of the present invention.
Fig. 1 to 5 show a first embodiment of the switch cabinet breaker electric maintenance vehicle according to the present invention.
The electric maintenance car for the circuit breaker of the switch cabinet in the embodiment adopts the auxiliary walking motor 3 to assist in walking, and when the circuit breaker is transported, the labor intensity of operation and maintenance personnel is reduced, so that the working efficiency is improved, and the operation and maintenance safety is guaranteed.
It includes: the base 1 comprises a bottom plate 11 and a hollow steel frame 12, wherein the hollow steel frame 12 encloses and blocks the periphery of the bottom plate 11 to form a hollow box body, and the top end and the peripheral side of the box body are provided with openings; the operation handrail 2 is used for controlling the direction and the speed of the electric maintenance car, one end of the operation handrail 2 is assembled and connected with the base 1, and the operation handrail 2 is provided with an instruction control board 21; an auxiliary walking motor 3 arranged at one side of the bottom plate 11; install lift assembly 4 on base 1, lift assembly 4 includes: the circuit breaker comprises a lifting rod 41, a circuit breaker bearing platform 42 which is slidably connected to the lifting rod 41, a telescopic support frame 43 and a lifting push rod motor 44, wherein two opposite ends of the telescopic support frame 43 are slidably connected to the bottoms of the base 1 and the circuit breaker bearing platform 42 respectively, and the lifting push rod motor 44 is connected with the telescopic support frame 43; and an electrical equipment box 5 mounted in the box body, wherein: the breaker bearing platform 42 is provided with a breaker bearing slide rail 61 and a width adjusting motor 62 connected with the breaker bearing slide rail 61; the electrical equipment box 5 is provided with controllers respectively connected with the auxiliary walking motor 3, the lifting push rod motor 44 and the width adjusting motor 62, wherein: the command control board 21 is connected with the controller.
During concrete implementation, base 1 is the square column form, and it makes the tool car have comparatively stable support focus. The base 1 comprises a bottom plate 11 and a hollow steel frame 12. The use of the hollow steel frame 12 can greatly save materials and is beneficial to reducing the production cost. The base 1 is connected with the operation handrail 2 in an assembling way, the self weight of the trolley is light, materials are saved, the production cost is reduced, and the push-pull movement of operators is facilitated.
Further, the instruction control board 21 is provided with a plurality of keys, and the keys include any one of an electric quantity indication key, a speaker key, a forward/backward movement control key and a speed control key. During the concrete implementation, control direction and speed through operation handrail 2, be equipped with electric quantity instruction, loudspeaker, tortoise speed button on the operation handrail 2 and advance the operation handle of retreating, but the dolly is fast operation when empty load, and when the tool car was transported, can be the operation at a slow speed for guaranteeing personnel and equipment safety.
The lifting assembly 4 comprises: lifter 41, slidable connection are at circuit breaker load-bearing platform 42, telescopic support frame 43 and the lift push rod motor 44 on lifter 41, and the relative both ends slidable of telescopic support frame 43 connects respectively in the bottom of base 1 and circuit breaker load-bearing platform 42, and lift push rod motor 44 links to each other with telescopic support frame 43. The telescopic support frame 43 is of a diamond telescopic frame structure, and the lifting push rod motor 44 pushes the circuit breaker bearing platform 42 to lift through the telescopic support frame 43, so that the electric height adjustment of the switch cabinet circuit breaker electric maintenance vehicle is realized.
The structure is arranged to have the following functions: the lifting is stable, the lifting range is large, the lifting amplitude is controllable, and the defects of low rotation adjusting speed, small adjusting distance, difficult horizontal adjustment, large labor consumption and the like of the conventional trolley mechanical thread are overcome.
During the implementation, lift push rod motor 44 is provided power by the battery, and through lift telescopic support frame 43 to the height of cubical switchboard circuit breaker electric overhaul car or small regulation on a large scale, when highly unsatisfied the requirement, through rising 4 adjustment of lifting unit make its locating pin counterpoint with the high-voltage board locating hole fast, rely on more labour saving and time saving of swiveling wheel small range height-adjusting than single.
Further, the lifting assembly 4 further comprises: install on circuit breaker load-bearing platform 42 for with the spring bolt 7 that the lock catch phase adaptation card was held on the high-voltage board cabinet door, a spring bolt handle 70 is connected to spring bolt 7, wherein: the lock tongue 7 is buckled on a locking buckle position on a cabinet door of the switch cabinet to lock the position of the electric maintenance vehicle.
In practice, the automatic positioning and locking function of the maintenance trolley is implemented by operating the bolt handle 70. For example: when the maintenance car is stably pushed into the cabinet body, the lock tongue 7 above the frame is locked with the socket of the switch cabinet, so that the position of the breaker trolley is locked. After the circuit breaker bearing platform 42 of the trolley is well locked with the switch cabinet, the locking between the maintenance trolley and the cabinet body is released, the transfer trolley is pushed away, and the safety of the transfer process is ensured.
Further, the circuit breaker bearing platform 42 is provided with a circuit breaker bearing slide rail 61 and a width adjusting motor 62 connected with the circuit breaker bearing slide rail 61, wherein the width adjusting motor 62 adjusts and changes the limiting width of the circuit breaker bearing slide rail 61, and the circuit breaker bearing slide rail 61 is assembled on two opposite sides of the circuit breaker bearing platform 42.
The mechanism is arranged to function as: the width adjusting motor 62 is combined with the transmission principle of the breaker bearing slide rail 61 to realize the limit width control of the breaker bearing platform 42, so that the breaker bearing platform moves stably, and the width can be adjusted to meet the requirements of breakers with different structures. The breaker bearing slide rail 61 and the width adjusting motor 62 are mounted, so that the defect that transfer trolleys with different widths or two asymmetric widths cannot be used universally can be overcome, the universality is high, and the mounting cost is low; the electric control mode has high accuracy, reduces the labor intensity of installation personnel, and improves the efficiency and the reliability. The circuit breaker bearing platform 42 can be accurately connected and positioned with the cabinet body through the buttons on the operation handrails 2.
Further, the base 11 is provided with a directional wheel 30, and in one embodiment, the directional wheel 30 may be connected to the auxiliary walking motor 3, wherein: the motion direction, speed and rotating speed of the auxiliary walking motor 3 are controlled by the instruction control board and the controller in the operation handrail 2, so that the directional wheel 30 is controlled in a linkage manner.
The effect of so setting is: the auxiliary walking motor 3 assists the directional wheel 30 at the bottom of the vehicle body, and the two are combined to assist the electric walking function of the circuit breaker transfer trolley by the operation handrail 2. The power is provided for the movement of the electric maintenance car and the moving direction of the electric maintenance car is controlled.
Further, a storage battery and a controller are arranged in the electrical equipment box 5, and the storage battery is connected with the controller. The controller is respectively connected with the auxiliary walking motor 3, the lifting push rod motor 44 and the width adjusting motor 62.
Preferably, one side of the electrical equipment box 5 is provided with a charging interface, and the charging interface is electrically connected with a storage battery. Therefore, in the power-on state, the external equipment can be charged through the charging interface. The effect of so setting is: adopt the butt joint mode of inserting by plane, directly charge for transporting the dolly in the station. Under the condition that some components in the electrical equipment box are damaged, normal operation can be realized only by replacing the standby electrical equipment box 5 and completing aerial insertion butt joint, and the device is simple in structure, convenient to maintain, safe and reliable.
In other embodiments of the switch cabinet breaker electric overhaul vehicle, the controller comprises an electric walking circuit with an auxiliary braking function, so that the safety and stability of equipment are ensured while the flexibility and convenience of the transferring and placing processes are ensured.
The electric maintenance vehicle for the switch cabinet circuit breaker has the following beneficial effects:
firstly, a breaker bearing platform is provided with a breaker bearing slide rail and a width adjusting motor connected with the breaker bearing slide rail; the electrical equipment box is provided with a controller respectively connected with an auxiliary walking motor, a lifting push rod motor and a width adjusting motor, wherein: the instruction control panel is connected with the controller, can be suitable for the detection of the cubical switchboard circuit breaker of multiple specification and dimension, promotes detection efficiency. The safe and reliable operation level of the power grid is improved, and the working efficiency, safety, economy and demonstration of power failure operation are improved.
The structure is simplified, the cost is easy to control, the power supply reliability can be further improved, the safety risk of maintainers is reduced, the working efficiency of operators is improved, and the labor intensity of the operators is reduced, so that the personal safety and the equipment safety of the operators are guaranteed.
And thirdly, the intelligent electric operation of the transfer trolley for the circuit breaker of the switch cabinet is realized, the transfer trolley can be widely popularized to high-voltage transmission lines and distribution network lines, and the adaptability is high.
Claims (8)
1. The utility model provides an electronic tool car of cubical switchboard circuit breaker which characterized in that includes:
the base comprises a bottom plate and a hollow steel frame, the hollow steel frame is enclosed around the bottom plate to form a hollow box body, and openings are formed in the top end and the peripheral side of the box body;
the operation handrail is used for controlling the direction and the speed of the electric maintenance vehicle, one end of the operation handrail is assembled and connected with the base, and the operation handrail is provided with an instruction control board;
an auxiliary walking motor arranged on one side of the bottom plate;
install lifting unit on the base, lifting unit includes: the lifting rod, the circuit breaker bearing platform which is connected to the lifting rod in a sliding mode, the telescopic support frame and the lifting push rod motor are connected, two opposite ends of the telescopic support frame are connected to the bottom of the base and the bottom of the circuit breaker bearing platform in a sliding mode respectively, and the lifting push rod motor is connected with the telescopic support frame; and
install the electrical equipment box in the box body, wherein: the circuit breaker bearing platform is provided with a circuit breaker bearing slide rail and a width adjusting motor connected with the circuit breaker bearing slide rail;
the electrical equipment box is provided with a controller which is respectively connected with the auxiliary walking motor, the lifting push rod motor and the width adjusting motor, wherein: the instruction control panel is connected with the controller.
2. The switchgear panel circuit breaker electrical maintenance vehicle of claim 1, wherein the lifting assembly further comprises: install circuit breaker load-bearing platform is last to be used for with the locking spring bolt that the looks adaptation card was held in the lock of high-voltage board cabinet door, wherein: the lock tongue is buckled on a locking buckle position on a cabinet door of the switch cabinet to lock the position of the electric maintenance vehicle.
3. The switch cabinet circuit breaker electrical maintenance vehicle of claim 1, wherein the width adjustment motor adjustment varies a limit width of the circuit breaker load bearing rails mounted on opposite sides of the circuit breaker load platform.
4. The switch cabinet breaker electric maintenance vehicle of claim 1, wherein a battery is provided in the electrical equipment cabinet, the battery being connected to the controller.
5. The electric tool car for the switch cabinet circuit breaker according to claim 4, wherein a charging interface is provided at one side of the electric equipment box, and the charging interface is electrically connected with the storage battery.
6. The switch cabinet circuit breaker electric maintenance vehicle of claim 1, wherein the base is fitted with orientation wheels thereon, wherein: the operation armrest controls the movement direction, the speed and the rotating speed of the auxiliary walking motor through the instruction control panel and the controller.
7. The switch cabinet circuit breaker electric maintenance vehicle of claim 1, wherein the telescopic support frame is a diamond-shaped telescopic frame structure.
8. The switch cabinet breaker electric maintenance vehicle of claim 1, wherein the command control panel is provided with a plurality of buttons, the buttons including any one of a power indication button, a horn button, a forward and backward movement control button, and a speed control button.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210955021.3A CN115340042A (en) | 2022-08-10 | 2022-08-10 | Electric maintenance vehicle for switch cabinet circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210955021.3A CN115340042A (en) | 2022-08-10 | 2022-08-10 | Electric maintenance vehicle for switch cabinet circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN115340042A true CN115340042A (en) | 2022-11-15 |
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ID=83952345
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210955021.3A Pending CN115340042A (en) | 2022-08-10 | 2022-08-10 | Electric maintenance vehicle for switch cabinet circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN115340042A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116960808A (en) * | 2023-08-01 | 2023-10-27 | 国网山东省电力公司蒙阴县供电公司 | Auxiliary maintenance device for distribution network switch cabinet |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809324A (en) * | 2019-03-13 | 2019-05-28 | 安徽融易供应链管理有限公司 | Carrier in a kind of logistics room |
| CN213569341U (en) * | 2020-10-31 | 2021-06-29 | 济南天峰液压机械有限公司 | Lifting mechanism for hydraulic platform |
| CN113602337A (en) * | 2021-08-06 | 2021-11-05 | 深圳供电局有限公司 | Circuit breaker transfer trolley |
-
2022
- 2022-08-10 CN CN202210955021.3A patent/CN115340042A/en active Pending
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109809324A (en) * | 2019-03-13 | 2019-05-28 | 安徽融易供应链管理有限公司 | Carrier in a kind of logistics room |
| CN213569341U (en) * | 2020-10-31 | 2021-06-29 | 济南天峰液压机械有限公司 | Lifting mechanism for hydraulic platform |
| CN113602337A (en) * | 2021-08-06 | 2021-11-05 | 深圳供电局有限公司 | Circuit breaker transfer trolley |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN116960808A (en) * | 2023-08-01 | 2023-10-27 | 国网山东省电力公司蒙阴县供电公司 | Auxiliary maintenance device for distribution network switch cabinet |
| CN116960808B (en) * | 2023-08-01 | 2024-03-08 | 国网山东省电力公司蒙阴县供电公司 | Auxiliary maintenance device for distribution network switch cabinet |
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