Liftable electric power overhaul frame

Abstract

The invention discloses a liftable electric power overhaul frame, and belongs to the technical field of electric power overhaul equipment. Lifting adjustment is carried out through the lifting frame, the maintenance frame is suitable for maintenance of electrical equipment of different heights, lifting is controlled in a lead screw transmission mode, a reinforcing structure is designed, a movable frame is supported through a pawl, force borne by a lead screw is reduced, and the service life of the maintenance frame is prolonged; the supporting table is arranged at the top of the lifting frame, the movable plate is arranged on one side of the supporting table, auxiliary supporting of the supporting table is achieved through cooperation with the stable structure, tight connection between the top block and the movable plate at different heights is achieved through rotation of the movable plate, storage operation of the stable structure is achieved, and use convenience is improved; the supporting area is increased through the translation moving structure, the supporting structure is arranged for adjusting and supporting, the stable supporting function is achieved in the using process, and the stability and safety of the electric power overhaul frame are improved.

Description

Technical Field

[0001] The invention discloses a liftable electric power maintenance frame, belonging to the technical field of electric power maintenance equipment. Background Art

[0002] Power equipment is an electricity production and consumption system consisting of power generation, transmission, transformation, distribution and consumption. After long-term use, power equipment needs to be regularly inspected and maintained. Some power equipment is installed at high places, so maintenance racks are needed. Early power maintenance racks had a simple structure and a single function. Since their height could not be adjusted, the height they could climb for maintenance was limited. In addition, when setting up the maintenance rack, since the contact area between the maintenance rack and the ground was only the contact area between the two poles and the ground, there was a safety hazard that the maintenance rack was unstable and easy to slide along the ground.

[0003] In response to the above problems, the invention patent "A Power Maintenance Frame" with application number 202110000064.1 provides a solution, which includes a ladder body assembly, a connecting assembly, a stabilizing assembly and a plug-in assembly. The connecting assembly is arranged inside the ladder body assembly, and the stabilizing assembly and the plug-in assembly are respectively arranged at both ends of the ladder body assembly, and the plug-in assembly is arranged at the end of the stabilizing assembly away from the ladder body assembly. The solution hinges the first upright and the second upright by a pin shaft, and the first upright and the second upright are limited by a limit rod and a limit arc groove, which can effectively make the first upright and the second upright only in a straight line when the angle at which the first upright and the second upright can flip is the largest, so that the first upright and the second upright form a straight ladder-like structure at this time, which is convenient for inspecting higher positions; through the provision of a stabilizing component, the support block in the stabilizing component can increase the contact area of ​​the first upright and the second upright when they are in contact with the ground, so that the first upright and the second upright can be placed on the ground more stably; through the provision of a plug-in component, when the support block in the stabilizing component contacts the ground and is subjected to force, the third sliding block can slide and shrink to the inside of the fifth groove, and after the third sliding block shrinks, the multiple pins fixed in the fifth groove can be stably plugged into the ground, so that the support block can be more stable when in contact with the ground.

[0004] It can be seen that increasing functionality, improving stability and ensuring safety are the development directions for making power maintenance racks more widely used. Summary of the invention

[0005] Aiming at the market demand for electric power maintenance racks, the present invention designs a liftable electric power maintenance rack, which is lifted and lowered by a lifting rack and is suitable for maintenance of electric power equipment at different heights. The lifting and lowering is controlled by a lead screw transmission, and a reinforcement structure is designed. A ratchet is used to support the movable frame, so the force borne by the lead screw is reduced, thereby increasing the service life of the maintenance rack. A support platform is provided on the top of the lifting rack, and a movable plate is provided on one side of the support platform, and auxiliary support of the support platform is achieved by cooperating with a stable structure. The movable plate is rotated to be suitable for different heights so that the top block and the movable plate are tightly connected, and the storage operation of the stable structure is achieved, thereby improving convenience of use. The support area is increased by translating the structure, and the support structure is provided to adjust the support, so that a stable support function is provided during use, thereby improving the stability and safety of the electric power maintenance rack.

[0006] The object of the present invention is achieved in that:

[0007] A liftable electric power maintenance frame comprises a fixed frame and a lifting frame, wherein the lifting frame is movably connected to the top of the fixed frame, a moving structure and a stabilizing structure are respectively arranged on one side of the fixed frame, a supporting structure is arranged on the top of the fixed frame, and a reinforcement structure is also arranged at the bottom of the lifting frame, and a first operating structure and a second operating structure are arranged inside the fixed frame;

[0008] The fixing frame includes a base, a bracket, a tilting frame, a lower handrail, a lower step, a notch and an opening;

[0009] The lifting frame includes a limit plate, a movable frame, a support platform, a side plate, a movable plate, an upper handrail and an upper ladder;

[0010] The movable structure comprises a support plate, a long screw rod, a hook and a slot;

[0011] The stabilizing structure comprises a sleeve, a telescopic rod, a flat key, a keyway, a reinforcing rod, a top block, a movable block and a limit block;

[0012] The support structure includes a sleeve shaft, a threaded rod and a stop block;

[0013] The reinforcement structure is located inside the limiting plate and includes a pawl, a first spring, a connecting rod and a pull rope;

[0014] The first operating structure includes a lead screw, a sprocket, a chain, a turntable, a slide slot, a slider and a second spring;

[0015] The second operating structure includes a traction rope, a guide wheel, a winch, a bayonet and an insertion rod.

[0016] The above-mentioned liftable power maintenance rack, in the fixed frame, the top of the base is fixedly connected to the bracket and the tilting frame respectively, the number of the tilting frames is two, the two tilting frames are respectively fixed to the two sides of the top of the bracket, the tilting frames are symmetrically distributed to the two sides of the bracket, the two tilting frames are respectively fixedly connected to the two ends of a plurality of lower steps, the plurality of lower steps are evenly distributed to the bottom of the tilting frame, and each surface of the tilting frame is fixedly connected to the lower handrail, a notch is provided at the top of the tilting frame, the movable frame is slidably connected to the inside of the notch, and openings are provided on adjacent sides of the tops of the two tilting frames.

[0017] The above-mentioned liftable power maintenance frame, in the lifting frame, the limit plate is fixedly connected to the side wall of the inclined frame, the movable frame is slidably connected to the inside of the limit plate, and the top of the movable frame is fixedly connected to the support platform, one side of the support platform is fixedly connected to the side plate, the side wall of the side plate is rotatably connected with the movable plate, the number of the limit plates and the movable frame is two, the cross-section of the two limit plates is an L-shaped structure, each of the limit plates is slidably connected to the movable frame, and the movable frame is fitted with the side wall of the inclined frame, the surface of the movable frame is fixedly connected with an upper handrail, and the two movable frames are fixedly connected by a number of evenly distributed upper steps;

[0018] The cross-section of the support platform is an L-shaped structure, and two symmetrically distributed side panels are provided on one side of the support platform. A movable plate of an L-shaped structure is provided between the two side panels. A gap is provided between the movable plate and the support platform to facilitate the rotation of the movable plate. The movable plate is located above the top block so that the angle of the movable plate can be adjusted when the top block moves into the inside of the movable plate.

[0019] The above-mentioned liftable power maintenance rack, in the mobile structure, the support plate is correspondingly arranged on one side of the base, the side end of the support plate is rotatably connected to the long screw, the long screw is plugged into the internal thread of the base, and the support plate and the top of the base are both provided with a slot, the slot is located on one side of the bracket, the support plate and the base have the same thickness, the side end of the support plate is rotatably connected to the hook, and the hook is engaged with the inside of the slot.

[0020] In the above-mentioned liftable electric power maintenance rack, in a stable structure, the inside of the sleeve is movably connected to the telescopic rod, the top of the telescopic rod is fixedly connected to the top block, and the top block is fitted and connected to the inside of the movable plate;

[0021] The sleeve is rotatably connected to the top surface of the base, the inner wall of the sleeve is fixedly connected to two symmetrically distributed flat keys, the surface of the telescopic rod is provided with key slots matching the flat keys, the two flat keys are slidably connected to the inside of the key slots, and the end of the telescopic rod is fixedly connected to the top block through a reinforcing rod.

[0022] The end of the sleeve is rotatably connected to the movable block, the cross-section of the movable block is a U-shaped structure, the interior of the movable block is threadedly sleeved with the telescopic rod, the inner wall of the bottom of the movable block is fixedly connected to a limit block, the limit block is embedded in the surface of the sleeve, and the limit block is slidably connected to the inside of the sleeve.

[0023] The above-mentioned liftable power maintenance rack has a supporting structure in which the sleeve shaft is rotatably connected to the top of the bracket, the interior of the sleeve shaft is threadedly sleeved with the threaded rod, the bottom end of the threaded rod is fixedly connected to the stop block, there are two sleeve shafts, the two sleeve shafts are symmetrically distributed on both sides of the sleeve, the two sleeve shafts are distributed corresponding to the slots, and the stop block is embedded and plugged into the inside of the slots.

[0024] In the above-mentioned liftable power maintenance frame, in the reinforcement structure, the pawl is rotatably connected to the inner wall of the limit plate, the pawl is connected to the limit plate through a first spring, and the connecting rod is rotatably connected to the middle parts of multiple pawls respectively, the bottom of the connecting rod is fixedly connected to the pull rope, and the pull rope is movably connected to the limit plate.

[0025] The above-mentioned liftable power maintenance frame, in the first operating structure, the number of the lead screws is two, the two lead screws are both located inside the limit plate, the lead screw is threadedly sleeved with the inside of the slider, the slider is slidably connected to the inside of the movable frame, the side wall of the movable frame is provided with a slide groove for movement of the slider, and the inside of the slide groove is connected to the slider through a second spring, the lead screws are symmetrically distributed on both sides of the base, the two lead screws are rotatably connected to the base, the top of each lead screw is rotatably connected to the tilting frame, the lead screws are distributed parallel to the tilting frame, the surface of the base is also rotatably connected to the turntable, the turntable and the bottom ends of the two lead screws are fixedly connected to the sprocket, the sprockets are connected by chain transmission, and the turntable is correspondingly arranged on one side of the base.

[0026] The above-mentioned liftable power maintenance frame, in the second operating structure, the traction rope is inserted through the top of the bracket, the bracket and the base are fixedly connected to the guide wheel, the guide wheel surface is provided with a traction rope, the two ends of the traction rope are respectively connected to the sleeve and the winch, the winch is rotatably connected to the bottom of the bracket, the capstan surface is provided with a number of evenly distributed bayonet holes, the inner side wall of the bracket is provided with a groove for moving the plug rod, the plug rod is correspondingly arranged above the winch, and the plug rod is embedded and inserted with the inside of the plug rod.

[0027] The benefits of the present application are as follows: the lifting and lowering adjustment is performed through the lifting frame, which is suitable for the maintenance of power equipment at different heights. The lifting and lowering is controlled by a screw drive, and a reinforcement structure is designed. The movable frame is supported by a pawl, so the force borne by the screw is reduced, and the service life of the maintenance frame is increased; a support platform is arranged on the top of the lifting frame, and a movable plate is arranged on one side of the support platform, and auxiliary support of the support platform is achieved by cooperating with a stable structure. The movable plate is rotated to be suitable for different heights, so that the top block and the movable plate are tightly connected, and the storage operation of the stable structure is realized, thereby improving the convenience of use; the support area is increased by translating the structure, and the support structure is set to adjust the support, which plays a stable support function during use, thereby improving the stability and safety of the power maintenance frame. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a three-dimensional structural schematic diagram of the liftable power maintenance rack of the present invention;

[0029] Figure 2 It is a schematic diagram of the planar structure of the liftable power maintenance rack of the present invention;

[0030] Figure 3 1 is a schematic diagram of the side structure of the limiting plate;

[0031] Figure 4 1 is a schematic diagram of the three-dimensional structure of the fixing frame;

[0032] Figure 5 It is a three-dimensional structural schematic diagram of the movable frame;

[0033] Figure 6 It is a schematic diagram of the three-dimensional structure of the support platform;

[0034] Figure 7 It is a three-dimensional structural diagram of a stable structure;

[0035] Figure 8 It is a three-dimensional structural schematic diagram of the reinforcement structure;

[0036] Fig. 9 is a schematic diagram of the side view structure of the tilt frame;

[0037] Fig.10 It is a schematic diagram of the side structure of the bracket.

[0038] In the figure: 1, fixed frame, 101, base, 102, bracket, 103, tilt frame, 104, lower handrail, 105, lower step, 106, notch, 107, opening, 2, lifting frame, 201, limit plate, 202, movable frame, 203, support table, 204, side plate, 205, movable plate, 206, upper handrail, 207, upper step, 3, mobile structure, 301, support plate, 302, long screw, 303, hook, 304, slot, 4, stable structure, 401, sleeve, 402, telescopic rod, 403, flat key, 404, keyway, 405, reinforcing rod, 406. top block, 407. movable block, 408. limit block, 5. supporting structure, 501. sleeve shaft, 502. threaded rod, 503. stop block, 6. reinforcement structure, 601. ratchet, 602. first spring, 603. connecting rod, 604. pull rope, 605. positioning groove, 7. first operating structure, 701. lead screw, 702. sprocket, 703. chain, 704. turntable, 705. slide groove, 706. slider, 707. second spring, 8. second operating structure, 801. traction rope, 802. guide wheel, 803. winch, 804. bayonet, 805. plug rod. DETAILED DESCRIPTION

[0039] The specific implementation modes of the present invention will be further described in detail below with reference to the accompanying drawings.

[0040] The liftable electric power maintenance frame in this specific implementation method includes a fixed frame 1 and a lifting frame 2;

[0041] Reference Figures 1 to 4 as well as Figures 8 to 10The top of the fixed frame 1 is movably connected to the lifting frame 2, a moving structure 3 and a stabilizing structure 4 are respectively provided on one side of the fixed frame 1, a supporting structure 5 is provided on the top of the fixed frame 1, and a reinforcing structure 6 is also provided on the bottom of the lifting frame 2, and a first operating structure 7 is provided inside the fixed frame 1; the fixed frame 1 includes a base 101, a bracket 102 and a tilting frame 103, the top of the base 101 is respectively fixedly connected to the bracket 102 and the tilting frame 103, the number of the tilting frames 103 is two, and the two tilting frames 103 are respectively fixed to The lifting frame 2 includes a limit plate 201, a movable frame 202 and a support platform 203, wherein the limit plate 201 is fixedly connected to the side wall of the tilting frame 103, the movable frame 202 is slidably connected to the inside of the limit plate 201, and the top of the movable frame 202 is fixedly connected to the support platform 203, one side of the support platform 203 is fixedly connected to the side plate 204, and the side wall of the side plate 204 is rotatably connected to the movable plate 205; the stabilizing structure 4 includes a sleeve 401, a telescopic rod 402 and a top block 406, the sleeve 40 1 is movably connected to the telescopic rod 402, the top of the telescopic rod 402 is fixedly connected to the top block 406, and the top block 406 is closely connected to the inside of the movable plate 205; the reinforcement structure 6 is located inside the limiting plate 201, and the reinforcement structure 6 includes a pawl 601 and a connecting rod 603, the pawl 601 is rotatably connected to the inner wall of the limiting plate 201, the pawl 601 is connected to the limiting plate 201 through a first spring 602, and the connecting rod 603 is rotatably connected to the middle of the plurality of pawls 601, and the bottom of the connecting rod 603 is connected to the pull rope 6 04 is fixedly connected, the pull rope 604 is movably connected with the limit plate 201; the first operating structure 7 includes a screw 701 and a slider 706, the number of the screw 701 is two, the two screws 701 are both located inside the limit plate 201, the screw 701 is internally threadedly sleeved with the slider 706, the slider 706 is slidably connected with the inside of the movable frame 202, the side wall of the movable frame 202 is provided with a slide groove 705 for moving the slider 706, and the inside of the slide groove 705 is connected to the slider 706 through a second spring 707.

[0042] Reference Figure 1 to Figure 2 , Figure 4 and Fig. 9 As a specific solution, the tilting frames 103 are symmetrically distributed on both sides of the bracket 102, and the two tilting frames 103 are respectively fixedly connected to the two ends of a plurality of lower steps 105, and the plurality of lower steps 105 are evenly distributed to the bottom of the tilting frames 103, and the surface of each tilting frame 103 is fixedly connected to the lower handrail 104, and a notch 106 is opened at the top of the tilting frame 103, and the movable frame 202 is slidably connected to the inside of the notch 106, and openings 107 are opened on adjacent sides of the tops of the two tilting frames 103.

[0043] Reference Figures 1 to 5 as well as Figure 8 As a specific solution, the number of the limiting plates 201 and the movable frames 202 are both two, the cross-sections of the two limiting plates 201 are both L-shaped structures, the interior of each limiting plate 201 is slidably connected to the movable frame 202, and the movable frame 202 is fitted and connected to the side wall of the tilting frame 103, an upper handrail 206 is fixedly connected to the surface of the movable frame 202, and the two movable frames 202 are fixedly connected by a number of evenly distributed upper steps 207.

[0044] Reference Figure 1 to Figure 2 as well as Figure 6 As a specific solution, the cross-section of the support platform 203 is an L-shaped structure, and two symmetrically distributed side panels 204 are provided on one side of the support platform 203, and an L-shaped movable plate 205 is provided between the two side panels 204. A gap is provided between the movable plate 205 and the support platform 203 to facilitate the rotation of the movable plate 205, and the movable plate 205 is located above the top block 406 so that the angle of the movable plate 205 can be adjusted when the top block 406 moves into the inside of the movable plate 205.

[0045] Reference Figure 1 to Figure 2 As an expansion solution, the mobile structure 3 includes a support plate 301 and a long screw 302. The support plate 301 is correspondingly arranged on one side of the base 101. The side end of the support plate 301 is rotatably connected to the long screw 302. The long screw 302 is threadedly plugged into the internal thread of the base 101, and a slot 304 is provided on the top of the support plate 301 and the base 101. The slot 304 is located on one side of the bracket 102. The support plate 301 and the base 101 have the same thickness. The side end of the support plate 301 is rotatably connected to the hook 303, and the hook 303 is engaged with the inside of the slot 304.

[0046] Reference Figure 1 to Figure 2 as well as Figure 7 As a specific solution, the sleeve 401 is rotatably connected to the top surface of the base 101, the inner wall of the sleeve 401 is fixedly connected to two symmetrically distributed flat keys 403, the surface of the telescopic rod 402 is provided with a key slot 404 matching the flat key 403, the two flat keys 403 are slidably connected to the inside of the key slot 404, and the end of the telescopic rod 402 is fixedly connected to the top block 406 through a reinforcing rod 405.

[0047] Reference Figure 1 to Figure 2 as well as Figure 7, adopting such a scheme, the end of the sleeve 401 is rotatably connected with the movable block 407, the cross-section of the movable block 407 is a U-shaped structure, the interior of the movable block 407 is threadedly sleeved with the telescopic rod 402, the bottom inner wall of the movable block 407 is fixedly connected with a limit block 408, the limit block 408 is embedded in the surface of the sleeve 401, and the limit block 408 is slidably connected to the inside of the sleeve 401.

[0048] Reference Figure 1 to Figure 2 As a specific solution, the support structure 5 includes a sleeve shaft 501, a threaded rod 502 and a stop block 503. The sleeve shaft 501 is rotatably connected to the top of the bracket 102, the inside of the sleeve shaft 501 is threadedly sleeved with the threaded rod 502, and the bottom end of the threaded rod 502 is fixedly connected to the stop block 503. There are two sleeve shafts 501, and the two sleeve shafts 501 are symmetrically distributed on both sides of the sleeve 401. The two sleeve shafts 501 are distributed corresponding to the slot 304, and the stop block 503 is embedded and plugged into the inside of the slot 304.

[0049] Reference Figures 1 to 3 as well as Figure 5 As a specific solution, the lead screws 701 are symmetrically distributed on both sides of the base 101, the two lead screws 701 are rotatably connected to the base 101, the top of each lead screw 701 is rotatably connected to the tilt frame 103, the lead screws 701 are distributed parallel to the tilt frame 103, the surface of the base 101 is also rotatably connected to the turntable 704, the turntable 704 and the bottom ends of the two lead screws 701 are fixedly connected to the sprocket 702, the sprockets 702 are connected by a chain 703, and the turntable 704 is correspondingly arranged on one side of the base 101.

[0050] Reference Figure 2 and Fig.10 As a specific solution, a second operating structure 8 is provided inside the fixing frame 1, and the second operating structure 8 includes a traction rope 801 and a winch 803. The traction rope 801 penetrates and is plugged into the top of the bracket 102. The bracket 102 and the base 101 are fixedly connected to the guide wheel 802. A traction rope 801 is provided on the surface of the guide wheel 802. The two ends of the traction rope 801 are respectively connected to the sleeve 401 and the winch 803. The winch 803 is rotatably connected to the bottom of the bracket 102. A plurality of evenly distributed bayonet holes 804 are provided on the surface of the winch 803. A groove for moving the insertion rod 805 is provided on the inner side wall of the bracket 102. The insertion rod 805 is correspondingly arranged above the winch 803, and the insertion rod 805 is embedded and plugged into the inside of the insertion rod 805.

[0051] The technical solution of the present application is that the entire liftable power maintenance frame is composed of a fixed frame 1 and a lifting frame 2. When it is necessary to perform lifting and adjustment, the turntable 704 is rotated to drive the lead screw 701 to rotate synchronously through the cooperation of the sprocket 702 and the chain 703. When the lead screw 701 rotates, it drives the slider 706 to move upward. The slider 706 pulls the movable frame 202 upward through the second spring 707, and then drives the support platform 203 to adjust the height. During the upward movement, the pawl 601 rotates in the positioning groove 605. When the adjustment is completed, the pawl 601 is re-engaged in the positioning groove Inside the slot 605, the maintenance personnel climb up the lower step 105 and the upper step 207 to the support platform 203 to perform maintenance operations. Before the personnel climb, the tension of the second spring 707 is equal to the gravity of the lifting frame 2. When the personnel climb, the lifting frame 2 is subjected to increased gravity, causing the slider 706 to continue to move inside the slide slot 705. When the lifting frame 2 moves downward, multiple ratchets 601 limit the positioning slot 605 to achieve support for the movable frame 202, so that the slider 706 bears almost no weight, thereby avoiding damage to the screw 701 and the slider 706 when the maintenance personnel bear weight.

[0052] When the lifting adjustment is completed, the hook 303 is removed and the long screw 302 is rotated so that the long screw 302 rotates inside the base 101 and then extends out, driving the support plate 301 away from the base 101. When the operation is completed, the threaded rod 502 is rotated to extend out from the sleeve shaft 501, and the abutment block 503 is abutted against the inside of the slot 304. By tightening the threaded rod 502, a stable structure 4 is formed between the bracket 102, the long screw 302 and the threaded rod 502 to improve the stable support function. After the height adjustment of the lifting frame 2 is completed, the insertion rod 805 is moved upward to separate it from the inside of the bayonet 804, and the winch 803 is rotated to loosen the traction rope 801. At this time, the sleeve 401 is rotated to expand it, and then the movable block 407 is rotated to drive the limit block 408 to rotate at the end of the sleeve 401, and drive the telescopic rod 402 to move. The telescopic rod 402 can be stably extended and retracted through the arrangement of the key slot 404 and the flat key 403, and the top block 406 is moved to the movable plate 205. The movable plate 205 is rotatably designed to achieve stable fit with the top block 406, and a stable connection is achieved by adjusting the length of the telescopic rod 402, and the support platform 203 is supported and limited to achieve stable use and ensure the safety of maintenance personnel. After use, the mobile structure 3, the support structure 5 and the stable structure 4 can all be stored to reduce space occupancy.

[0053] The above is only a specific implementation method of the present application and is not intended to limit the present application. For those skilled in the art, the present application may have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A liftable power maintenance frame, comprising a fixed frame (1) and a lifting frame (2), characterized in that: The top of the fixed frame (1) is movably connected to a lifting frame (2); one side of the fixed frame (1) is provided with a moving structure (3) and a stabilizing structure (4); the top of the fixed frame (1) is provided with a supporting structure (5); the bottom of the lifting frame (2) is also provided with a reinforcing structure (6); and a first operating structure (7) and a second operating structure (8) are provided inside the fixed frame (1); The fixing frame (1) comprises a base (101), a bracket (102), an inclined frame (103), a lower handrail (104), a lower step (105), a notch (106) and an opening (107); The lifting frame (2) comprises a limiting plate (201), a movable frame (202), a support platform (203), a side plate (204), a movable plate (205), an upper handrail (206) and an upper ladder (207); The movable structure (3) comprises a support plate (301), a long screw (302), a hook (303) and a slot (304); The stabilizing structure (4) comprises a sleeve (401), a telescopic rod (402), a flat key (403), a keyway (404), a reinforcing rod (405), a top block (406), a movable block (407) and a limit block (408); The support structure (5) comprises a sleeve shaft (501), a threaded rod (502) and a stop block (503); The reinforcement structure (6) is located inside the limiting plate (201), and comprises a ratchet (601), a first spring (602), a connecting rod (603) and a pull rope (604); The first operating structure (7) comprises a lead screw (701), a sprocket (702), a chain (703), a rotating disk (704), a sliding groove (705), a sliding block (706) and a second spring (707); The second operating structure (8) comprises a traction rope (801), a guide wheel (802), a winch (803), a bayonet (804) and an insertion rod (805).

2. The liftable electric power maintenance rack according to claim 1, characterized in that: In the fixed frame (1), the top of the base (101) is fixedly connected to the bracket (102) and the tilting frame (103) respectively, the number of the tilting frames (103) is two, the two tilting frames (103) are respectively fixedly connected to the two sides of the top of the bracket (102), the tilting frames (103) are symmetrically distributed on the two sides of the bracket (102), the two tilting frames (103) are respectively fixedly connected to the two ends of a plurality of lower steps (105), the plurality of lower steps (105) are evenly distributed to the bottom of the tilting frame (103), and the surface of each tilting frame (103) is fixedly connected to the lower handrail (104), the top of the tilting frame (103) is provided with a notch (106), the movable frame (202) is slidably connected to the inside of the notch (106), and the adjacent sides of the tops of the two tilting frames (103) are provided with openings (107).

3. The liftable electric power maintenance rack according to claim 1, characterized in that: In the lifting frame (2), the limit plate (201) is fixedly connected to the side wall of the tilting frame (103), the movable frame (202) is slidably connected to the inside of the limit plate (201), and the top of the movable frame (202) is fixedly connected to the support platform (203), one side of the support platform (203) is fixedly connected to the side plate (204), and the side wall of the side plate (204) is rotatably connected with a movable plate (205), the number of the limit plates (201) and the movable frame (202) is two, the cross-sections of the two limit plates (201) are both L-shaped structures, the inside of each limit plate (201) is slidably connected to the movable frame (202), and the movable frame (202) is fitted and connected to the side wall of the tilting frame (103), the surface of the movable frame (202) is fixedly connected with an upper handrail (206), and the two movable frames (202) are fixedly connected by a plurality of evenly distributed upper steps (207); The support platform (203) has an L-shaped cross-section. Two symmetrically distributed side panels (204) are provided on one side of the support platform (203). An L-shaped movable panel (205) is provided between the two side panels (204). A gap is provided between the movable panel (205) and the support platform (203) to facilitate the rotation of the movable panel (205). The movable panel (205) is located above the top block (406) to facilitate the adjustment of the angle of the movable panel (205) when the top block (406) moves into the interior of the movable panel (205).

4. The liftable electric power maintenance rack according to claim 1, characterized in that: In the mobile structure (3), the support plate (301) is correspondingly arranged on one side of the base (101), the side end of the support plate (301) is rotatably connected to the long screw (302), the long screw (302) is plugged into the inner thread of the base (101), and the tops of the support plate (301) and the base (101) are both provided with a slot (304), the slot (304) is located on one side of the bracket (102), the support plate (301) and the base (101) have the same thickness, the side end of the support plate (301) is rotatably connected to the hook (303), and the hook (303) is internally engaged with the slot (304).

5. The liftable electric power maintenance rack according to claim 1 is characterized in that: In the stable structure (4), the interior of the sleeve (401) is movably sleeved with the telescopic rod (402), the top of the telescopic rod (402) is fixedly connected with the top block (406), and the top block (406) is fittedly connected with the interior of the movable plate (205); The sleeve (401) is rotatably connected to the top surface of the base (101); the inner wall of the sleeve (401) is fixedly connected to two symmetrically distributed flat keys (403); a key slot (404) matching the flat key (403) is provided on the surface of the telescopic rod (402); the two flat keys (403) are slidably connected to the inside of the key slot (404); and the end of the telescopic rod (402) is fixedly connected to the top block (406) via a reinforcing rod (405). The end of the sleeve (401) is rotatably connected to the movable block (407); the cross section of the movable block (407) is a U-shaped structure; the interior of the movable block (407) is threadedly sleeved with the telescopic rod (402); the inner wall of the bottom of the movable block (407) is fixedly connected to a limit block (408); the limit block (408) is engaged with the surface of the sleeve (401), and the limit block (408) is slidably connected to the interior of the sleeve (401).

6. The liftable electric power maintenance rack according to claim 1, characterized in that: In the support structure (5), the sleeve shaft (501) is rotatably connected to the top of the bracket (102), the interior of the sleeve shaft (501) is threadedly sleeved with the threaded rod (502), and the bottom end of the threaded rod (502) is fixedly connected to the stop block (503). There are two sleeve shafts (501), and the two sleeve shafts (501) are symmetrically distributed on both sides of the sleeve (401). The two sleeve shafts (501) are distributed corresponding to the slot (304), and the stop block (503) is embedded and plugged into the inside of the slot (304).

7. The liftable electric power maintenance rack according to claim 1, characterized in that: In the reinforcement structure (6), the pawl (601) is rotatably connected to the inner wall of the limiting plate (201), the pawl (601) is connected to the limiting plate (201) via a first spring (602), and the connecting rod (603) is rotatably connected to the middle parts of the plurality of pawls (601), the bottom of the connecting rod (603) is fixedly connected to the pull rope (604), and the pull rope (604) is movably connected to the limiting plate (201).

8. The liftable electric power maintenance rack according to claim 1, characterized in that: In the first operating structure (7), the number of the lead screws (701) is two, and the two lead screws (701) are both located inside the limit plate (201). The lead screws (701) are threadedly sleeved inside the slider (706), and the slider (706) is slidably connected to the inside of the movable frame (202). The side wall of the movable frame (202) is provided with a slide groove (705) for the slider (706) to move, and the inside of the slide groove (705) is connected to the slider (706) via a second spring (707). The lead screws (701) are symmetrically distributed to the base (10 1) on both sides, the two lead screws (701) are rotatably connected to the base (101), the top of each lead screw (701) is rotatably connected to the tilting frame (103), the lead screw (701) and the tilting frame (103) are distributed in parallel, the surface of the base (101) is also rotatably connected to a turntable (704), the turntable (704) and the bottom ends of the two lead screws (701) are fixedly connected to a sprocket (702), the sprockets (702) are connected to each other by a chain (703), and the turntable (704) is correspondingly arranged on one side of the base (101).

9. The liftable electric power maintenance rack according to claim 1, characterized in that: In the second operating structure (8), the traction rope (801) is inserted through the top of the bracket (102), the bracket (102) and the base (101) are fixedly connected to the guide wheel (802), the traction rope (801) is provided on the surface of the guide wheel (802), the two ends of the traction rope (801) are respectively connected to the sleeve (401) and the winch (803), the winch (803) is rotatably connected to the bottom of the bracket (102), the surface of the winch (803) is provided with a plurality of evenly distributed bayonet holes (804), the inner side wall of the bracket (102) is provided with a groove for moving the insertion rod (805), the insertion rod (805) is correspondingly arranged above the winch (803), and the insertion rod (805) is inserted and engaged with the inside of the insertion rod (805).

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