CN117963804A

CN117963804A - A remove crane for electrical equipment installation maintenance

Info

Publication number: CN117963804A
Application number: CN202410052164.2A
Authority: CN
Inventors: 谢新航; 闫君; 耿健瑞; 赵紫薇; 王伯杨
Original assignee: Beijing Changfeng Xinlian Engineering Management Co ltd
Current assignee: Beijing Changfeng Xinlian Engineering Management Co ltd
Priority date: 2024-01-12
Filing date: 2024-01-12
Publication date: 2024-05-03

Abstract

The application relates to a movable lifting frame for the installation and maintenance of electrical equipment, which comprises a movable base, comprises a working platform and universal wheels rotatably connected at four corners of the working platform; the lifting assembly is arranged on the working platform and comprises two groups of lifting rods arranged in a scissor-fork mode, connecting rods connected between the two groups of lifting rods and hydraulic rods hinged between the two diagonal connecting rods, the hydraulic rods are connected to an oil tank through oil pipes, and the oil pipes are provided with hydraulic pumps; the manned platform is arranged at the top of the lifting assembly and hinged with the tail end of the lifting rod at the top; the support legs are movably arranged on the working platform and can vertically slide along the working platform, and the working platform is provided with fixing pieces for fixing the support legs; and the control assembly is arranged on the working platform and is electrically connected with the hydraulic pump. The application has the effects of ensuring the stable safety of the electrical equipment during installation and maintenance, improving the flexibility, meeting the requirements of different construction sites and heights and improving the operation efficiency.

Description

A remove crane for electrical equipment installation maintenance

Technical Field

The application relates to the field of movable lifting frames, in particular to a movable lifting frame for installation and maintenance of electrical equipment.

Background

With the continuous development of the power system, the large-scale use of the electric equipment, and the installation and maintenance of the electric equipment become important components for ensuring the safe and stable operation of the power system. Equipment installation and maintenance is an engineering activity that is carried out around power supply and distribution equipment of a power system. The installation and maintenance of electrical equipment is a basic means for maintaining the normal operation of an electrical system and is also an important support for the development of the electrical industry. The purpose of installation and maintenance work is to maintain the safety and reliability of electrical equipment, and to find and restore to its normal state in time when equipment and facilities are out of line or are out of order.

Conventional repair typically takes place in two ways: a maintenance vehicle is arranged, a telescopic bracket is arranged on the maintenance vehicle, maintenance staff is lifted to the corresponding height for maintenance work, the operation is troublesome, the cost is high, once the maintenance equipment is remote, the maintenance vehicle is difficult to drive in, and the maintenance difficulty is increased; in addition, the traditional ladder supporting mode is low in safety, special personnel are needed to nurse, the ladder is moved to take time and labor, and maintenance efficiency is low. In addition, in the two modes, once the condition of missing the tool is needed to operate the maintenance vehicle or transfer by other people, the maintenance vehicle is very inconvenient, and the working efficiency is greatly reduced.

Disclosure of Invention

In order to ensure the stable safety during the installation and maintenance of the electrical equipment, improve the flexibility, meet the requirements of different construction sites and heights and improve the operation efficiency, the application provides the movable lifting frame for the installation and maintenance of the electrical equipment.

The application provides a movable lifting frame for electric equipment installation and maintenance, which adopts the following technical scheme:

the movable lifting frame comprises a movable base, a movable base and a movable lifting frame, wherein the movable base comprises a working platform and universal wheels rotatably connected to four corners of the working platform;

The lifting assembly is arranged on the working platform and comprises two groups of lifting rods arranged in a scissor-fork mode, connecting rods connected between the two groups of lifting rods and hydraulic rods hinged between the two diagonal connecting rods, the hydraulic rods are connected to an oil tank through oil pipes, and the oil pipes are provided with hydraulic pumps;

The manned platform is arranged at the top of the lifting assembly and hinged with the tail end of the lifting rod at the top;

the support legs are movably arranged on the working platform and can vertically slide along the working platform, through holes which are formed in the working platform and extend out of the support legs, and fixing pieces used for fixing the support legs are arranged on the working platform;

and the control assembly is arranged on the manned guardrail and is electrically connected with the hydraulic pump and the driving assembly.

By adopting the technical scheme, the lifting rods which are arranged in a scissor-fork manner are used, and the hydraulic rods control the opening and closing of the lifting rods, so that the manned platform is driven to rapidly and stably lift, the working efficiency is improved, the lifting assembly is small in structure, and the lifting assembly is arranged on the movable base which can flexibly move, so that the lifting assembly is more flexible to move, and the lifting assembly is more convenient to push the movable lifting frame to overhaul electrical equipment at various positions, and is suitable for overhauling electrical equipment at different places and different heights; through the landing leg of activity setting on work platform, when removing to the maintenance position, lock four universal wheels to control four landing legs and stretch out and use the position of mounting fixed leg, reduce the probability that the unexpected aversion appears in the removal crane, increase the security stability who removes the crane.

Preferably, a plurality of fixing holes are formed in one side of the supporting leg, the fixing holes are formed in the length direction of the supporting leg at intervals, and the fixing piece comprises a spring bolt fixed on the working platform.

By adopting the technical scheme, when maintenance is not needed, the spring bolt is combined with the fixing hole at the lowest part of the supporting leg, when the movable lifting frame moves to the maintenance position, the universal wheel is locked, the spring bolt is pulled out to enable the supporting leg to fall under the action of gravity, and after the bottom of the supporting leg is ensured to be pressed with the ground under the set pressure, the lower matching personnel inserts the spring bolt into the corresponding fixing hole to fix the position of the supporting leg.

Preferably, the bottom surface of the working platform is provided with a contact surface adjusting assembly in a sliding manner at a position corresponding to the supporting leg, the contact surface adjusting assembly comprises a long clamping seat and a plurality of contact patches arranged along the length direction of the clamping seat, the contact patches are used for being combined to the bottom of the supporting leg when the supporting leg stretches out, the contact patches are different in material and detachably connected with the clamping seat, and the working platform is provided with a sliding assembly for driving the contact surface adjusting assembly to slide.

Through adopting above-mentioned technical scheme, when the juncture that the maintenance position just is located different material ground, then sliding contact face adjusting part, the ground material switching that is used for combining with the landing leg according to the landing leg is located, when the landing leg stretches out, landing leg bottom combines with the contact patch that corresponds for the contact patch breaks away from the cassette, and the landing leg is fixed back, and contact patch and ground butt are the frictional resistance in order to ensure the contact patch and the bottom surface of corresponding material the biggest, guarantee work platform's supporting stability.

Preferably, the card seat is made of permanent magnetic material, each contact patch comprises a connecting part made of metal material and used for magnetically attracting the card seat and a contact part used for contacting different ground surfaces, and the contact parts of each contact patch are designed to be different;

The sliding assembly comprises a sliding seat fixed on the lower surface of the working platform, the contact surface adjusting assembly is embedded with the sliding seat and is in sliding connection with the sliding seat, the sliding assembly further comprises a sliding rod vertically fixed with the contact surface adjusting assembly, and an oblong hole for the sliding rod to slide is formed in the working platform.

Through adopting above-mentioned technical scheme, through each contact paster and chuck magnetism inhale to be connected, realize that the temporary fixation of contact paster on the chuck, through the slip slide bar, drive the slide bar and slide in long circular hole to make contact surface adjusting part horizontal slip on the sliding seat, thereby switch the contact paster that corresponds with the through-hole, when the landing leg stretches out and combines with the contact paster, directly lean on the rigid pressure of landing leg and contact paster to make contact paster and chuck separation, simple structure.

Preferably, the connecting part is provided with a groove for being embedded with the supporting leg.

By adopting the technical scheme, the temporary combination of the supporting leg and the contact patch is facilitated.

Preferably, the longitudinal section of the connecting part is in a shape of a Chinese character 'ji', so that the side wall and the bottom wall of the connecting part are utilized to be connected with the clamping seat in a magnetic attraction manner.

Through adopting above-mentioned technical scheme, through the longitudinal section of design connecting portion for several font, be convenient for break away from smoothly with the cassette through the pressure when the landing leg is inserted down when landing leg and contact paster combine to when the landing leg drives the contact paster and moves up, the diapire of connection combines with the cassette earlier, makes landing leg and contact paster break away from smoothly, and the contact paster returns to the normal position.

Preferably, the contact portion includes a rubber pad for abutting against a smooth ground surface, a bevel pad for contacting a ground surface, and a deformed sponge pad for contacting a gravel ground surface.

Through adopting above-mentioned technical scheme, through setting up a plurality of contact patches that match with different material ground to increase the frictional resistance with different material ground, improve the supporting stability of landing leg.

Preferably, the manned platform is enclosed with a guardrail, and the guardrail comprises at least one movable baffle which can be opened and closed for people to enter; and a cat ladder is further vertically fixed on the working platform and is positioned on one side close to the movable baffle.

By adopting the technical scheme, guardrails are maintained around the manned platform, so that the safety of maintenance personnel is conveniently ensured; the maintainer goes up and down through the cat ladder, through setting up at least one adjustable fender that can open and shut, the maintainer of being convenient for gets into manned platform.

Preferably, the manned platform and the guard rail are both provided with insulating layers, and the manned platform is provided with a gravity sensor.

Through adopting above-mentioned technical scheme, through all setting up the insulating layer on manned platform and guardrail, the security of operation when guaranteeing maintainer electric power maintenance sets up gravity sensor on manned platform, is convenient for detect the weight that manned platform bore to carry the control assembly with detecting structure, be convenient for in time report to the police when overweight on manned platform and handle, the security of guarantee maintainer when the maintenance.

Preferably, a damping spring is arranged at the joint of the universal wheel and the working platform.

Through adopting above-mentioned technical scheme, through setting up damping spring in the junction of universal wheel and work platform, be convenient for alleviate the shock sense when passing through the highway section of jolting.

In summary, the present application includes at least one of the following beneficial technical effects:

1. The lifting rods are arranged in a scissor type manner, and the hydraulic rods control the opening and closing of the lifting rods, so that the manned platform is driven to realize rapid and stable lifting, the working efficiency is improved, the lifting assembly is small in structure, and the lifting assembly is arranged on the movable base which can be flexibly moved, so that the lifting assembly is more flexible to move, and is more convenient to push the movable lifting frame to overhaul electrical equipment at various positions, and is suitable for overhauling at different places and different heights;

2. the contact patch for combining with the ground with different materials is arranged at the bottom of the working platform in a sliding manner, so that the support legs are convenient to adapt to the combination with the ground with different materials, and the support stability is improved;

3. Through installing damping spring in the junction of universal wheel and work platform, be convenient for alleviate the shock sense that manned platform felt.

Drawings

Fig. 1 is a schematic view of the overall structure of the present application.

Fig. 2 is a partial enlarged view of the structure at a in fig. 1.

Fig. 3 is a schematic view of the structure of the contact patch.

Fig. 4 is a partial enlarged view of the structure at B in fig. 1.

Reference numerals illustrate: 1. a movable base; 11. a working platform; 111. a through hole; 112. an oblong hole; 12. a universal wheel; 13. a mounting bracket; 2. a lifting assembly; 21. a lifting rod; 22. a connecting rod; 23. a hydraulic rod; 24. an oil pipe; 25. an oil tank; 26. a hydraulic pump; 3. a manned platform; 31. guard bars; 311. a movable baffle; 32. an insulating layer; 4. a support leg; 41. a fixing hole; 5. a fixing member; 51. a spring bolt; 6. a control assembly; 61. an alarm; 7. a contact surface adjustment assembly; 71. a clamping seat; 72. a contact patch; 721. a connection part; 7211. a groove; 722. a contact portion; 723. bevel gear pad; 724. a rubber gasket; 725. deforming the sponge gasket; 8. a sliding assembly; 81. a boom; 82. a sliding seat; 83. a slide bar; 9. a ladder stand; 10. and a damping spring.

Detailed Description

The application is described in further detail below with reference to fig. 1-4.

The embodiment of the application discloses a movable lifting frame for installation and maintenance of electrical equipment. Referring to fig. 1, a mobile lift for installation and maintenance of electrical equipment includes a mobile base 1, a lift assembly 2 vertically installed on the mobile base 1, and a man-carrying platform 3 installed at the top end of the lift assembly 2. The four corners of the working platform 11 are movably provided with the supporting legs 4, so that the movable lifting frame can conveniently extend out after moving to the maintenance position, the supporting stability is improved, and the working platform 11 is provided with the fixing piece 5 for fixing the supporting legs 4. The movable base 1 comprises a working platform 11 which is horizontally arranged and universal wheels 12 which are rotatably connected to four corners of the bottom surface of the working platform 11, wherein the universal wheels 12 are brake universal wheels 12 and are arranged on the working platform 11 through mounting brackets 13.

The lifting assembly 2 comprises two sets of scissor-fork arranged lifting rods 21 and connecting rods 22 connected between the two sets of lifting rods 21 and hydraulic rods 23 arranged in a hinged manner between the two diagonal connecting rods 22. The lifting rod 21 is provided with a plurality of groups in the height direction, and the application is described by taking four groups of lifting rods 21 as an example, so that the hydraulic rods 23 are also provided with two groups in the height direction, and each group of hydraulic rods 23 comprises two oppositely arranged hydraulic rods. The hydraulic rod 23 is connected to an oil tank 25 through an oil pipe 24, and a hydraulic pump 26 is mounted on the oil pipe 24. A control assembly 6 is mounted on the people carrier 3, the control assembly 6 comprising a controller and an operating handle. When the manned platform 3 needs to be controlled to ascend or descend, an maintainer on the manned platform 3 controls an operating handle to enable a hydraulic pump 26 to be started to feed or return hydraulic oil into the hydraulic rod 23, so that the hydraulic rod 23 stretches out or retracts to drive an included angle between the scissor type lifting rods 21 to be gradually opened, so that the manned platform 3 is gradually descended, or drive an included angle between the scissor type lifting rods 21 to be gradually retracted, so that the manned platform 3 is gradually ascended. The lifting rod 21 arranged in a scissor type manner can realize quick and stable lifting, so that the working efficiency is improved, the lifting assembly 2 is small in structure, the lifting assembly 2 is arranged on the movable base 1 which can be flexibly moved, the movement is more flexible, the movable lifting frame disclosed by the application is more convenient to push the movable lifting frame to overhaul electrical equipment at various positions, and the movable lifting frame is suitable for overhauling at different places and different heights.

When outdoor overhaul is carried out, particularly when the ground is the land, the uneven bottom surface is inevitably encountered, and in order to enable the supporting leg 4 to adapt to the uneven bottom surface, a plurality of fixing holes 41 are formed in one side of the supporting leg 4, and the fixing holes 41 are formed at intervals along the length direction of the supporting leg 4. The fixing member 5 includes a spring latch 51 fixed to the work platform 11. When maintenance is not needed, the spring bolt 51 is combined with the fixing hole 41 at the lowest part of the supporting leg 4, when the movable lifting frame moves to the maintenance position, the universal wheel 12 is locked, the spring bolt 51 is pulled out to enable the supporting leg 4 to fall under the action of gravity, and after the bottom of the supporting leg 4 is ensured to keep the set pressure with the ground, a lower matching person inserts the spring bolt 51 into the corresponding fixing hole 41 to fix the position of the supporting leg 4.

Referring to fig. 1,2 and 3, further, in order to make landing leg 4 adapt to the combination with different material ground, improve the supporting stability of work platform 11, thereby reduce the probability that influences maintainer safety because of universal wheel 12 appears skidding, slide on the bottom surface of work platform 11 and be provided with contact surface adjustment assembly 7 on the position of landing leg 4 correspondingly, contact surface adjustment assembly 7 includes rectangular frame's cassette 71 and a plurality of along a plurality of contact paster 72 that cassette 71 length direction arranged, install on the work platform 11 and be used for driving the gliding slip subassembly 8 of contact surface adjustment assembly 7. The contact patch 72 is detachably connected to the card holder 71 for engaging with the bottom of the leg 4 when the leg 4 is extended, and is disengaged from the card holder 71 as the leg 4 is moved down. When the maintenance position just lies in the juncture of different material ground, then sliding contact face adjusting part 7, the ground material according to landing leg 4 position switches and is used for the contact paster 72 that combines with landing leg 4, and each contact paster 72 designs to be different and is used for the material that combines with different ground, and landing leg 4 is fixed back, contact paster 72 and ground butt are with the frictional resistance of the bottom surface of guarantee contact paster 72 and corresponding material biggest, guarantee work platform 11's supporting stability.

Referring to fig. 2, preferably, the card holder 71 is made of a permanent magnetic material, and each contact patch 72 includes a connection portion 721 made of a metal material for magnetically attracting the card holder 71 and a contact portion 722 for contacting a different ground surface. The contact portion 722 of each contact patch 72 is designed differently, and the present application is described by taking as an example three kinds of contact portions 722 including a rubber pad 724 for abutting against a smooth ground surface, a bevel pad 723 for contacting with a soil surface, and a deformation sponge pad 725 for contacting with a gravel surface. The contact patches 72 are magnetically connected with the chuck, so that temporary fixation of the contact patches 72 on the chuck is facilitated.

Referring to fig. 1 and 2, the sliding assembly 8 includes a sliding seat 82 fixed to the lower surface of the work platform 11 by four suspension rods 81, and the contact surface adjusting assembly 7 is fitted to the sliding seat 82 and slidably coupled to the sliding seat 82. The sliding component 8 further comprises a sliding rod 83 vertically fixed with the contact surface adjusting component 7, an oblong hole 112 is formed in the working platform 11, and the sliding rod 83 penetrates through the oblong hole 112 and can slide along the axis of the oblong hole 112. By pushing the slide bar 83 forward or backward, the contact surface adjusting assembly 7 is driven to slide forward or backward along the slide seat 82. To facilitate the operator's determination that the underlying contact patch 72 is in place, indicator lines are imprinted on either side of the oblong hole 112, indicating that the bottom of the through hole 111 has been switched by one contact patch 72 when the end of the sliding bar 83 moves from one indicator line to the next.

Referring to fig. 3, a groove 7211 for engagement with the leg 4 is provided in the connection portion 721 to enhance the connection stability of the leg 4 with the contact patch 72. Further, the longitudinal section of the connecting portion 721 is shaped like a Chinese character 'ji', so that the side wall and the bottom wall of the connecting portion 721 are magnetically connected with the card seat 71, so that the pressure generated by downward inserting the supporting leg 4 is conveniently and smoothly separated from the card seat 71 when the supporting leg 4 is combined with the contact patch 72, and the connected bottom wall is firstly combined with the card seat 71 when the supporting leg 4 drives the contact patch 72 to move upwards, so that the supporting leg 4 and the contact patch 72 are smoothly separated, and the contact patch 72 returns to the original position.

Referring to fig. 1, further, in order to ensure the safety of the service personnel, a guardrail 31 is enclosed on the manned platform 3. The guard rail 31 includes at least one openable and closable movable baffle 311 for a person to enter, and the working platform 11 is further vertically fixed with a ladder stand 9, where the ladder stand 9 is located at one side close to the movable baffle 311, so that a worker can go up and down. Meanwhile, in order to reduce the electric shock risk of the overhauling personnel, an insulating layer 32 is arranged on the manned platform 3 and the guard rail 31. The manned platform 3 is provided with a gravity sensor, so that the weight born by the manned platform 3 is conveniently detected, and the detection structure is conveyed to the control assembly 6. The control assembly 6 further comprises an alarm 61 fixed on the working platform 11, so that alarm processing can be conveniently carried out in time when the gravity sensor detects that the manned platform 3 is overweight, and the safety of overhauling personnel during overhauling is guaranteed.

In order to reduce shock when passing through a bumpy road, a shock-absorbing spring 10 is installed at the junction of the mounting bracket 13 and the work platform 11.

The implementation principle of the movable lifting frame for the installation and maintenance of the electrical equipment in the embodiment of the application is as follows: the mobile lifting frame of the application is first moved to the maintenance position, the fixed universal wheel 12 is braked, and then the sliding rod 83 is pushed according to the road surface condition, so that the corresponding contact patch 72 is opposite to the bottom of the supporting leg 4. The spring pin is then pulled out, pushing the leg 4 out and causing the leg 4 to be inserted into the recess 7211 of the connection 721, such that the contact patch 72 is disengaged from the card seat 71 and brought into close abutment with the ground under the hard pressure of the leg 4. One serviceman then enters the guardrail 31 through the ladder 9 and the remaining staff fits on the ground. The maintainer opens through the operating handle operation oil pump on the manned platform 3, injects fluid to hydraulic rod 23 in, and hydraulic rod 23 promotes connecting rod 22 and risees for scissor lift pole 21 also receive gradually thereupon, so as to slowly push up manned platform 3 to the maintenance position, the staff of being convenient for overhauls, and work efficiency improves, and the security performance reinforcing of maintenance during operation.

The above embodiments are not intended to limit the scope of the present application, so: all equivalent changes in structure, shape and principle of the application should be covered in the scope of protection of the application.

Claims

1. A remove crane for electrical equipment installation maintenance, its characterized in that: comprising the following steps:

The movable base (1) comprises a working platform (11) and universal wheels (12) rotatably connected to four corners of the working platform (11);

The lifting assembly (2) is arranged on the working platform (11) and comprises two groups of lifting rods (21) which are arranged in a scissor-fork mode, connecting rods (22) which are connected between the two groups of lifting rods (21) and hydraulic rods (23) which are arranged between the two diagonal connecting rods (22) in a hinged mode, the hydraulic rods (23) are connected to an oil tank (25) through oil pipes (24), and hydraulic pumps (26) are arranged on the oil pipes (24);

The manned platform (3) is arranged at the top of the lifting assembly (2) and is hinged with the tail end of the top lifting rod (21);

The support legs (4) are movably arranged on the working platform (11) and can vertically slide along the working platform (11), through holes (111) which are used for the support legs (4) to extend out are formed in the working platform (11), and fixing pieces (5) used for fixing the support legs (4) are arranged on the working platform (11);

And the control assembly (6) is arranged on the working platform (11), and the control assembly (6) is electrically connected with the hydraulic pump (26).

2. The mobile lift frame for installation and maintenance of electrical equipment of claim 1, wherein: a plurality of fixing holes (41) are formed in one side of the supporting leg (4), the fixing holes (41) are formed in the length direction of the supporting leg (4) at intervals, and the fixing piece (5) comprises a spring bolt (51) fixed on the working platform (11).

3. The mobile lift frame for installation and maintenance of electrical equipment of claim 1, wherein: the utility model provides a contact surface adjusting part (7) is provided with to the bottom surface of work platform (11) on corresponding the position of landing leg (4) in a sliding way, contact surface adjusting part (7) are including rectangular cassette (71) and a plurality of edge a plurality of contact patch (72) that cassette (71) length direction arranged, contact patch (72) are used for when landing leg (4) stretch out the bottom that combines to landing leg (4), each contact patch (72) material is different and with cassette (71) detachable connection, install on work platform (11) be used for driving contact surface adjusting part (7) gliding slip subassembly (8).

4. A mobile lift frame for installation and maintenance of electrical equipment according to claim 3, characterized in that: the clamping seat (71) is made of a permanent magnetic material, each contact patch (72) comprises a connecting part (721) made of a metal material and used for magnetically attracting the clamping seat (71) and a contact part (722) used for contacting different ground surfaces, and the contact parts (722) of the contact patches (72) are designed to be different;

the sliding assembly (8) comprises a sliding seat (82) fixed on the lower surface of the working platform (11), the contact surface adjusting assembly (7) is embedded with the sliding seat (82) and is connected to the sliding seat (82) in a sliding mode, the sliding assembly (8) further comprises a sliding rod (83) vertically fixed with the contact surface adjusting assembly (7), and an oblong hole (112) for the sliding rod (83) to slide is formed in the working platform (11).

5. The mobile lift frame for installation and maintenance of electrical equipment of claim 4, wherein: the connecting part (721) is provided with a groove (7211) which is used for being embedded with the supporting leg (4).

6. The mobile lift frame for installation and maintenance of electrical equipment of claim 5, wherein: the longitudinal section of the connecting part (721) is in a shape of a Chinese character 'ji' so as to be magnetically connected with the clamping seat (71) by utilizing the side wall and the bottom wall of the connecting part (721).

7. The mobile lift frame for installation and maintenance of electrical equipment of claim 6, wherein: the contact portion (722) includes a rubber pad (724) for abutting against a slippery ground surface, a bevel pad (723) for contacting a soil surface, and a deformed sponge pad (725) for contacting a gravel surface.

8. The mobile lift frame for installation and maintenance of electrical equipment of claim 1, wherein: a guardrail (31) is enclosed on the manned platform (3), and the guardrail (31) comprises at least one movable baffle (311) which can be opened and closed for people to enter; a crawling ladder (9) is further vertically fixed on the working platform (11), and the crawling ladder (9) is located on one side, close to the movable baffle (311), of the working platform.

9. The mobile lift frame for installation and repair of electrical equipment of claim 8, wherein: the manned platform (3) and the guard rail (31) are both provided with an insulating layer (32), and the manned platform (3) is provided with a gravity sensor.

10. The mobile lift frame for installation and maintenance of electrical equipment of claim 1, wherein: and a damping spring (10) is arranged at the joint of the universal wheel (12) and the working platform (11).