Safety maintenance trolley for power transformation equipment

Abstract

The invention discloses a power transformation equipment safety maintenance trolley, and relates to the technical field of power transformation equipment, the power transformation equipment safety maintenance trolley comprises a trolley body, one end of the trolley body is rotatably provided with a horizontal rotating arm, and one end of the rotating arm is rotatably provided with a vertical brush disc; a detection assembly is further installed on the vehicle body and comprises a cross beam capable of vertically moving relative to the vehicle body, a plurality of supporting arms are evenly installed on the cross beam, and detection blocks are installed on the two sides of each supporting arm. When the power transformation equipment safety maintenance trolley provided by the invention is used, an operator only needs to operate in an operation room and does not need to work outdoors at a high temperature, so that the operation difficulty is greatly reduced, and the reliability of safety detection is also ensured.

Description

Technical Field

[0001] The invention relates to the technical field of substation equipment, in particular to a substation equipment safety maintenance trolley. Background Art

[0002] Transformer equipment is a device used in substations to change voltage, transform and transfer electric energy. It is mainly used to meet the needs of power adaptation, transmission, and distribution. Although high-strength materials and advanced processes are used in the manufacture of transformer equipment, the equipment will gradually deteriorate and cause safety hazards if it is in poor working conditions for a long time, such as full-load operation, harsh outdoor environment, and intrusion by small animals. The continuous accumulation of safety hazards will cause equipment failures, resulting in accidents such as shutdowns and short circuits, causing huge losses. Therefore, it is necessary to perform safety maintenance on transformer equipment regularly.

[0003] A Chinese invention patent application with publication number CN114566902A discloses a universal adaptive substation switch cabinet maintenance trolley, including a trolley body with universal wheels at the bottom, a lifting mechanism at the top of the trolley body, a top platform installed on the top of the lifting mechanism, two sliding rails on the upper surface of the top platform, two movable panels that can be moved closer or opened to each other are installed above the sliding rails, and a latch mechanism used in conjunction with the latch hole of the switch cabinet is installed on the side of the top platform.

[0004] Oil-immersed transformers are divided into oil pillow type, corrugated type and composite type. The oil pillow type is to install an oil pillow on the transformer oil tank, and install an air bag and a breather inside the oil pillow. The air bag is connected to the atmosphere through the breather, and the outside of the bag is in contact with the transformer oil. The air bag floats on the oil surface. When the insulating oil in the oil tank expands or contracts, causing the oil level in the oil storage cabinet to rise or fall, the air bag discharges gas to the outside or inhales air by itself to balance the internal and external pressures; the corrugated type controls the insulating oil level through the deformation characteristics of the hollow heat sink itself due to thermal expansion and contraction, ensuring that the transformer body is always immersed in oil. In some areas with harsh climatic conditions, composite transformers are usually used to prevent oil leakage and oil seepage in the transformer. For composite transformers installed outdoors, it is necessary to regularly perform maintenance inspections on their breathers and heat sinks, specifically to check that the breathing port of the breather is not covered with dirt and that the deformation of the heat sink is within the allowable range. At present, this type of safety maintenance work is done manually by operators, which is very labor-intensive and the outdoor working environment is relatively harsh. In particular, the inspection of heat sinks needs to be carried out in high temperature weather, which is often difficult for operators with insufficient experience to perform. Based on this, it is urgent to develop a device that can automatically perform safety maintenance on outdoor transformers. Summary of the invention

[0005] The purpose of the present invention is to provide a substation equipment safety maintenance trolley to solve the above-mentioned deficiencies in the prior art.

[0006] To achieve the above object, the present invention provides the following technical solution: A safety maintenance trolley for substation equipment, including a vehicle body, a horizontal rotating arm is rotatably installed at one end of the vehicle body, and a vertical brush disc is rotatably installed at one end of the rotating arm; a detection component is also installed on the vehicle body, and the detection component includes a cross beam capable of vertically moving relative to the vehicle body, several support arms are evenly installed on the cross beam, and detection blocks are installed on both sides of the support arms.

[0007] As a preferred technical solution of the present invention, the detection block is horizontally slidably matched with the support arm along the direction parallel to the movement direction of the trolley, a bridging conductor is fixedly installed at the inner end of the detection block, and a wire, a power supply and an indicator light are installed at the position corresponding to each detection block on the support arm.

[0008] As a preferred technical solution of the present invention, a ball is rotatably installed at the outer end of the detection block, and an elastic sheet is connected between the detection block and the support arm.

[0009] As a preferred technical solution of the present invention, a U-shaped frame with an upward opening is horizontally slidably installed on the vehicle body along its movement direction, the cross beam is vertically slidably installed on the U-shaped frame, and a calibration unit for calibrating the position of the U-shaped frame is also installed on the vehicle body.

[0010] As a preferred technical solution of the present invention, the calibration unit includes a horizontal shaft rotatably installed on the U-shaped frame, and the horizontal shaft is arranged along the movement direction of the vehicle body; two calibration rods are fixedly installed on the horizontal shaft, and the top edges of the opposite sides of the two calibration rods are rounded.

[0011] As a preferred technical solution of the present invention, push blocks are installed at the positions corresponding to both ends of the cross beam, rotating rods are rotatably installed at the positions corresponding to each push block on the U-shaped frame, and the rotation axis of the rotating rod is in a horizontal state; a round wheel is rotatably installed at the top end of the rotating rod, and a telescopic arm is slidably installed at the bottom end of the rotating rod; sector gears are fixedly installed at the positions corresponding to each telescopic arm on the horizontal shaft, and racks meshing with the sector gears are horizontally slidably installed at the positions corresponding to each sector gear on the U-shaped frame, and the corresponding telescopic arm and the rack are rotationally matched through a pin shaft.

[0012] As a preferred technical solution of the present invention, an L-shaped connecting plate is fixedly installed at one end of the rack, and a telescopic spring is fixedly connected between the connecting plate and the horizontal section of the U-shaped frame.

[0013] As a preferred technical solution of the present invention, the top surface of the push block is a horizontal plane, the bottom surface of the push block is an arc surface, the bottom edge of the push block is rotationally matched with the cross beam, a torsion spring is connected between the push block and the cross beam, and the rotation axis of the push block is parallel to the axis of the round wheel.

[0014] As a preferred technical solution of the present invention, a bracket is fixedly installed on the rack, a positioning pin is vertically slidably installed on the bracket, and an elastic member is connected between the positioning pin and the bracket; a pin plate is fixedly installed at the position corresponding to each positioning pin on the shaped frame, and a pin hole matching the positioning pin and vertically passing through the pin plate is opened on the pin plate; a push rod is vertically fixedly installed at the position corresponding to each pin hole on the crossbeam.

[0015] As a preferred technical solution of the present invention, the top surface of the positioning pin is a hemispherical surface.

[0016] In the above technical scheme, the substation equipment safety maintenance trolley provided by the present invention can be translated along a predetermined track or cable and stationary on one side of the transformer; in the stationary state, the brush plate on the trolley can clean the breathing port of the respirator to ensure that the breathing port of the respirator is not covered with dirt; at the same time, the detection component on the trolley can detect the degree of deformation of the heat sink. Once the degree of deformation of the heat sink reaches a predetermined value, the corresponding indicator light will light up, and the operator can remotely record the detection result. When using the substation equipment safety maintenance trolley provided by the present invention, the operator only needs to operate in the operating room, and there is no need to work outdoors at high temperatures, which greatly reduces the difficulty of operation and ensures the reliability of safety detection. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the present invention. For ordinary technicians in this field, other drawings can also be obtained based on these drawings.

[0018] Figure 1 It is a schematic diagram of the first three-dimensional structure of the substation equipment safety maintenance vehicle in the embodiment;

[0019] Figure 2 for Figure 1 The enlarged schematic diagram of point A in the middle;

[0020] Figure 3 is a cross-sectional view of the support arm and the detection block in the embodiment;

[0021] Figure 4 for Figure 1 The enlarged schematic diagram of point B in the middle;

[0022] Figure 5 for Figure 1 The enlarged schematic diagram of the center C;

[0023] Figure 6 It is a second three-dimensional structural schematic diagram of the substation equipment safety maintenance vehicle in the embodiment;

[0024] Figure 7 for Figure 6 The enlarged schematic diagram of point D in the middle;

[0025] Figure 8 for Figure 6 Enlarged schematic diagram of point E in the middle.

[0026] Description of reference numerals:

[0027] 1. Car body; 2. Rotating arm; 3. Brush plate; 4. Detection assembly; 401. Crossbeam; 402. Support arm; 403. Detection block; 404. Bridging conductor; 405. Wire; 406. Power supply; 407. Indicator light; 408. Ball; 409. Elastic sheet; 410. Profile frame; 411. Horizontal axis; 412. Calibration rod; 413. Push block; 414. Rotating rod; 415. Round wheel; 416. Telescopic arm; 417. Fan gear; 418. Rack; 419. Connecting plate; 420. Telescopic spring; 421. Positioning pin; 422. Pin plate; 423. Pin hole; 424. Push rod. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the technical solution of the present invention, the present invention will be further described in detail below with reference to the accompanying drawings.

[0029] like Figure 1 As shown, this embodiment provides a substation equipment safety maintenance trolley for safety maintenance inspection of multiple transformers installed outdoors, including a vehicle body 1, a horizontal rotating arm 2 is rotatably mounted at one end of the vehicle body 1, and a vertical brush plate 3 is rotatably mounted at one end of the rotating arm 2. A driving member for controlling the rotation of the rotating arm 2 is installed on the vehicle body 1, and the rotating arm 2 can rotate 90 degrees. In the working state, the rotating arm 2 rotates to Figure 1 In the state shown, after the work is completed, when the vehicle body 1 needs to be moved, the rotating arm 2 rotates to a position away from the transformer to avoid interference. A driving member for driving the brush plate 3 to rotate is fixedly installed on the rotating arm 2. Figure 1 In this state, the brush on the upper surface of the brush plate 3 fits with the breathing port of the respirator, and when the brush plate 3 rotates, the brush can clean the dirt on the surface of the breathing port. The vehicle body 1, the rotating arm 2 and the brush plate 3 are all remotely controlled by the operator in the operating room. The specific control method is a commonly used technical means in this field, which will not be elaborated here.

[0030] It should be noted that a horizontal guide rail is provided along the direction in which the transformers are arranged, and the vehicle body 1 moves along the guide rail. Rollers and driving parts for driving the rollers to rotate are installed on the vehicle body 1; after the work is completed, the rollers rotate, driving the vehicle body 1 to move to the position corresponding to the next transformer and then stop.

[0031] like Figure 2 , Figure 3 and Figure 8 As shown, a detection component 4 is also installed on the vehicle body 1, and the detection component 4 includes a crossbeam 401 that can move vertically relative to the vehicle body 1, and a plurality of support arms 402 are evenly installed on the crossbeam 401, and detection blocks 403 are installed on both sides of the support arms 402; the detection blocks 403 are horizontally slidably matched with the support arms 402 in a direction parallel to the moving direction of the trolley, and the detection blocks 403 are made of insulating material, and a bridge conductor 404 is fixedly installed on the inner end of the detection block 403, and the bridge conductor 404 can conduct electricity, and a wire 405, a power supply 406 and an indicator light 407 are installed on the support arm 402 at a position corresponding to each detection block 403; a ball 408 is rotatably installed on the outer end of the detection block 403 to reduce the friction force received by the crossbeam 401, the support arm 402 and the detection block 403 during the overall descent, and an elastic sheet 409 is connected between the detection block 403 and the support arm 402. It should be noted that each bridge conductor 404 corresponds to two wires 405, and the two wires 405, the bridge conductor 404, the power supply 406 and the indicator light 407 together form a series circuit, that is, when the bridge conductor 404 and the two wires 405 are in contact, the power supply 406 supplies power to the indicator light 407, and the indicator light 407 is lit; when the bridge conductor 404 and the two wires 405 are separated, the indicator light 407 is off; the upper surface and the lower surface of the bridge conductor 404 are both inclined surfaces, and the ends of the two wires 405 corresponding to the bridge conductor 404 are both non-deformable solid structures, and are matched with the inclined surface of the bridge conductor 404. A camera (not shown in the figure) for observing the indicator light 407 is also installed on the crossbeam 401, and the camera can remotely transmit the image signal to the operator in the operation room, and the operator can observe whether the indicator light 407 is lit through the screen.

[0032] Specifically, in the initial state, the crossbeam 401, the support arm 402 and the detection block 403 are all located at the highest point of the vertical stroke. As the crossbeam 401 descends, the support arm 402 enters the area between two adjacent heat sinks, and the detection blocks 403 on both sides of the support arm 402 face the heat sinks on both sides respectively; in hot weather, the oil in the transformer tank will expand, causing the heat sink to also expand and deform. The expansion deformation of the heat sink must be controlled within a certain range, otherwise leakage is likely to occur; during the descent of the detection block 403, the ball 408 will contact the side wall of the heat sink in the expanded state, and overcome the force of the elastic sheet 409 under the reaction force of the heat sink to drive the detection block 403 and the bridge guide The body 404 translates toward the inside of the arm 402; under normal conditions, the bridging conductor 404 does not contact the two wires 405, and the indicator light 407 is off; when the expansion of the heat sink reaches the specified limit value, the ball 408 also pushes the detection block 403 and the bridging conductor 404 to translate to the limit position under the reaction force of the heat sink, that is, the bridging conductor 404 fits the two wires 405, and the corresponding indicator light 407 is on; in this way, the operator can determine whether the corresponding heat sink has reached the limit of the allowable deformation range by observing the indicator light 407, and thus decide whether to replace the heat sink; when the beam 401 drops to the bottom of the vertical stroke, it moves upward and resets to the initial position.

[0033] In fact, since the translation position of the vehicle body 1 cannot be precisely controlled, it is impossible to ensure that the support arm 402 is always in the middle when it descends between two adjacent heat sinks, which will inevitably cause errors in the detection. Based on this, the present embodiment also carries out the following design; Figure 1As shown, a profile frame 410 with an upward opening is installed on the vehicle body 1 for horizontal sliding along its moving direction, and a crossbeam 401 is installed on the profile frame 410 for vertical sliding. A calibration unit for calibrating the position of the profile frame 410 is also installed on the vehicle body 1; a driving member (not shown in the figure) for driving the crossbeam 401 to rise and fall is installed on the profile frame 410, and the specific driving method is a commonly used technical means in this field, which will not be elaborated here; the calibration unit includes a horizontal axis 411 rotatably installed on the profile frame 410, and the horizontal axis 411 is arranged along the moving direction of the vehicle body 1; two calibration rods 412 parallel to each other are fixedly installed on the horizontal axis 411, and the top edges of the opposite sides of the two calibration rods 412 are rounded. Specifically, in the initial state, the two calibration rods 412 are in a horizontal state. During the descending process of the crossbeam 401, before the support arm 402 enters between two adjacent heat sinks, the horizontal axis 411 and the calibration rod 412 rotate to a certain angle, and the calibration rod 412 contacts the outer side walls of the heat sinks on both sides, and the overall position of the mold frame 410, the crossbeam 401, the support arm 402 and the detection block 403 is horizontally calibrated; if the overall position of the mold frame 410, the crossbeam 401, the support arm 402 and the detection block 403 is accurate, then the inner side wall of the calibration rod 412 will directly contact the inner side wall of the detection block 403. The outer walls of the heat sinks on the two sides are in contact with each other; if the overall position of the molded frame 410, beam 401, arm 402 and detection block 403 deviates (the deviation will not be too much, generally within 1 cm), then the arc portion of one of the calibration rods 412 will contact the heat sink on the corresponding side, and during the rotation of the calibration rod 412, the reaction force of the heat sink will cause the molded frame 410, beam 401, arm 402 and detection block 403 to translate as a whole until the molded frame 410, beam 401, arm 402 and detection block 403 reach the accurate position as a whole.

[0034] It should be noted that the horizontal axis 411 and the calibration rod 412 stop rotating after a certain angle, and during the whole process of the arm 402 entering between adjacent heat sinks and descending, the two calibration rods 412 always fit with the outer wall of the heat sink on the corresponding side to ensure that the profile frame 410, the cross beam 401, the arm 402 and the detection block 403 are always in the correct position as a whole. Metal balls are arranged between the profile frame 410 and the vehicle body 1 to reduce the friction between the two and ensure that the reaction force of the heat sink can make the profile frame 410, the cross beam 401, the arm 402 and the detection block 403 translate to the correct position as a whole.

[0035] like Figure 4 , Figure 5 and Figure 7As shown, push blocks 413 are installed at positions corresponding to both ends of the crossbeam 401, and a rotating rod 414 is rotatably installed at a position corresponding to each push block 413 on the shaped frame 410, and the rotation axis of the rotating rod 414 is in a horizontal state; a round wheel 415 is rotatably installed at the top of the rotating rod 414, and a telescopic arm 416 is slidably installed at the bottom end of the rotating rod 414; a sector gear 417 is fixedly installed at a position corresponding to each telescopic arm 416 on the horizontal axis 411, and each sector gear 417 on the shaped frame 410 is fixedly installed at a position corresponding to each telescopic arm 416. The positions of 417 are all horizontally slidably installed with racks 418 meshing with them, and the corresponding telescopic arms 416 and racks 418 are rotatably matched through pins; the top surface of the push block 413 is a horizontal surface, and the bottom surface of the push block 413 is an arc surface. The edge of the bottom surface of the push block 413 is rotatably matched with the cross beam 401. A torsion spring is connected between the push block 413 and the cross beam 401. The rotation axis of the push block 413 is parallel to the axis of the round wheel 415. In the absence of external force, the relative position of the push block 413 and the cross beam 401 is always in Figure 4 Status shown.

[0036] Specifically, when the cross beam 401 begins to descend under the action of external force, the push block 413 will first contact the round wheel 415, and specifically, the arc surface of the push block 413 will contact the circumferential surface of the round wheel 415. The round wheel 415 will drive the rotating rod 414, which was originally in a vertical state, to rotate under the thrust of the push block 413, and the reaction force applied by the round wheel 415 to the push block 413 will make the push block 413 and the cross beam 401 fit more closely; when the rotating rod 414 rotates, the telescopic arm 416 will extend and drive the rack 418 to translate. During the translation of the rack 418, it drives the fan-shaped gear 417 meshing with it to rotate, so that the horizontal The shaft 411 and the calibration rod 412 rotate. After the horizontal shaft 411 and the calibration rod 412 rotate a certain angle, the push block 413 descends to a state separated from the circular wheel 415, and the support arm 402 also follows the cross beam 401 to descend between two adjacent heat sinks, and is located in the middle of the two adjacent heat sinks; in summary, in this embodiment, the drive is provided by the cross beam 401, so that the calibration rod 412 rotates a certain angle before the support arm 402 descends between two adjacent heat sinks, and the mold frame 410, the cross beam 401, the support arm 402 and the detection block 403 are calibrated as a whole without providing a separate power source for the calibration rod 412.

[0037] like Figure 4 and Figure 5As shown, an L-shaped connecting plate 419 is fixedly installed at one end of the rack 418, and a telescopic spring 420 is fixedly connected between the connecting plate 419 and the horizontal section of the shaped frame 410; a bracket is fixedly installed on the rack 418, and a positioning pin 421 is vertically slidably installed on the bracket, and the top surface of the positioning pin 421 is a hemispherical surface, and an elastic member is connected between the positioning pin 421 and the bracket; a pin plate 422 is fixedly installed at a position corresponding to each positioning pin 421 on the shaped frame 410, and a pin hole 423 matching the positioning pin 421 and vertically penetrating the pin plate 422 is opened on the pin plate 422; a push rod 424 is vertically fixedly installed at a position corresponding to each pin hole 423 on the crossbeam 401.

[0038] Specifically, in the initial state, the positioning pin 421 is located outside the corresponding pin hole 423, and the top surface of the positioning pin 421 is pressed against the bottom surface of the pin plate 422. When the rack 418 is translated under the force of the telescopic arm 416, the positioning pin 421 and the connecting plate 419 are also translated synchronously, and the telescopic spring 420 is compressed and stores energy; after the rack 418 is translated to a predetermined position, that is, after the calibration rod 412 is rotated to a predetermined angle, the positioning pin 421 is also inserted into the corresponding pin hole 423 under the action of the elastic member; in this way, even if the push block 413 is in contact with the After the round wheel 415 is separated, the resilience of the telescopic spring 420 will not reset the rack 418 and the connecting plate 419, that is, the calibration rod 412 can always remain in an inclined state and position the mold frame 410, the beam 401, the support arm 402 and the detection block 403 as a whole; when the beam 401 is driven by an external force to drop to a position close to its bottom end, the push rod 424 is also synchronously inserted into the corresponding pin hole 423 and pushes the positioning pin 421 in the pin hole 423 to drop; when the beam 401 drops to the lowest point, the positioning pin 421 1 is just pushed out of the pin hole 423, that is, the bottom surface of the pin hole 423 is just flush with the top of the positioning pin 421; in this way, the rack 418 and the connecting plate 419 will be translated and reset under the rebound force of the telescopic spring 420, and the positioning pin 421 will also be staggered from the corresponding pin hole 423 and return to the initial position; the rack 418 drives the fan-shaped gear 417 to reverse, and the fan-shaped gear 417 also drives the horizontal shaft 411 and the calibration rod 412 to reverse and reset, and the calibration rod 412 returns to a horizontal state to stagger the position of the heat sink to prevent the car body 1 from continuing to When the rack 418 is translated and reset, it will drive the telescopic arm 416 and the rotating rod 414 to reverse to the vertical state, and the telescopic arm 416 will shrink synchronously; finally, when the cross beam 401 rises and resets under the drive of external force, the push block 413 will contact the circular wheel 415, but the reaction force of the circular wheel 415 on the push block 413 will cause the push block 413 to rotate relative to the cross beam 401 until the cross beam 401 rises to the initial height, and the push block 413 is also separated from the circular wheel 415 and reset under the action of the torsion spring.

[0039] The above description is only by way of illustration of certain exemplary embodiments of the present invention. It is undoubted that those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A substation equipment safety maintenance vehicle, comprising a vehicle body (1), characterized in that: A horizontal rotating arm (2) is rotatably mounted on one end of the vehicle body (1), and a vertical brush plate (3) is rotatably mounted on one end of the rotating arm (2); a detection assembly (4) is also mounted on the vehicle body (1), and the detection assembly (4) comprises a crossbeam (401) capable of vertically moving relative to the vehicle body (1), a plurality of supporting arms (402) are evenly mounted on the crossbeam (401), and detection blocks (403) are mounted on both sides of the supporting arms (402).

2. A substation equipment safety maintenance vehicle according to claim 1, characterized in that: The detection block (403) is horizontally slidably matched with the support arm (402) in a direction parallel to the moving direction of the trolley, a bridging conductor (404) is fixedly installed at the inner end of the detection block (403), and a wire (405), a power supply (406) and an indicator light (407) are installed at a position corresponding to each detection block (403) on the support arm (402).

3. A substation equipment safety maintenance vehicle according to claim 2, characterized in that: A ball (408) is rotatably mounted on the outer end of the detection block (403), and an elastic sheet (409) is connected between the detection block (403) and the support arm (402).

4. A substation equipment safety maintenance vehicle according to claim 2, characterized in that: A profile frame (410) with an opening facing upward is installed on the vehicle body (1) in a horizontal sliding manner along its moving direction, and the crossbeam (401) is installed on the profile frame (410) in a vertical sliding manner. A calibration unit for calibrating the position of the profile frame (410) is also installed on the vehicle body (1).

5. A substation equipment safety maintenance vehicle according to claim 4, characterized in that: The calibration unit comprises a horizontal axis (411) rotatably mounted on a molded frame (410), the horizontal axis (411) being arranged along the moving direction of the vehicle body (1); two calibration rods (412) are fixedly mounted on the horizontal axis (411), and the top edges of the opposite sides of the two calibration rods (412) are rounded.

6. A substation equipment safety maintenance vehicle according to claim 5, characterized in that: Push blocks (413) are installed at positions corresponding to both ends of the crossbeam (401), and a rotating rod (414) is rotatably installed at a position corresponding to each push block (413) on the shaped frame (410), and the rotation axis of the rotating rod (414) is in a horizontal state; a round wheel (415) is rotatably installed at the top of the rotating rod (414), and a telescopic arm (416) is slidably installed at the bottom of the rotating rod (414); a sector gear (417) is fixedly installed at a position corresponding to each telescopic arm (416) on the horizontal axis (411), and a rack (418) meshing with the sector gear (417) is horizontally slidably installed at a position corresponding to each sector gear (417) on the shaped frame (410), and the corresponding telescopic arm (416) and the rack (418) are rotatably matched through a pin shaft.

7. A substation equipment safety maintenance vehicle according to claim 6, characterized in that: An L-shaped connecting plate (419) is fixedly installed at one end of the rack (418), and a telescopic spring (420) is fixedly connected between the connecting plate (419) and the horizontal section of the shaped frame (410).

8. A substation equipment safety maintenance vehicle according to claim 7, characterized in that: The top surface of the push block (413) is a horizontal surface, the bottom surface of the push block (413) is an arc-shaped surface, the bottom edge of the push block (413) is rotatably matched with the cross beam (401), a torsion spring is connected between the push block (413) and the cross beam (401), and the rotation axis of the push block (413) is parallel to the axis of the round wheel (415).

9. A substation equipment safety maintenance vehicle according to claim 8, characterized in that: A bracket is fixedly installed on the rack (418), a positioning pin (421) is vertically slidably installed on the bracket, and an elastic member is connected between the positioning pin (421) and the bracket; a pin plate (422) is fixedly installed at the position corresponding to each positioning pin (421) on the profile frame (410), and a pin hole (423) matching the positioning pin (421) and vertically passing through the pin plate (422) is opened on the pin plate (422); a push rod (424) is vertically fixedly installed at the position corresponding to each pin hole (423) on the crossbeam (401).

10. A substation equipment safety maintenance vehicle according to claim 9, characterized in that: The top surface of the positioning pin (421) is a hemispherical surface.

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