Auxiliary equipment for maintenance of transformer substation and maintenance method of transformer substation

Abstract

The invention relates to the technical field of maintenance of electrical equipment, in particular to auxiliary equipment for maintenance of a transformer substation and a maintenance method of the transformer substation. The auxiliary equipment for maintenance of the transformer substation comprises a vehicle body, a lifting device, a supporting arm, a mounting base, a guide rail, a rotary driving device and a wrenching head; the upper end of the lifting device is horizontally and rotationally connected with a supporting arm; the end, away from the lifting device, of the supporting arm is horizontally and rotationally connected with the mounting base, the guide rail is connected to the mounting base, the rotary driving device is slidably connected to the guide rail, and a rotary shaft of the rotary driving device is perpendicular to the length direction of the guide rail. The wrenching head is connected to the output end of the rotation driving device and matched with the wrenching part of the lead screw of the low-voltage switch cabinet, the lead screw does not need to be manually screwed in the using process, and the labor intensity of operators is greatly reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of maintenance of electric power equipment, and in particular to auxiliary equipment for substation maintenance and a maintenance method for a substation. Background Art

[0002] A substation is often equipped with many low-voltage switch cabinets. In order to ensure the safe and stable operation of the low-voltage switch cabinet, it is necessary to regularly maintain the low-voltage switch cabinet. During the regular maintenance of the low-voltage switch cabinet, the trolley switch box in the low-voltage switch cabinet needs to be moved out of the cabinet. The trolley switch is connected to the cabinet through a screw slider mechanism. At present, when moving out the trolley switch box, it is necessary to rely on the operator to hold a wrench tool and use the wrench tool to rotate the wrench head of the screw rod to move the trolley switch box out of the cabinet. After the maintenance is completed, the operator needs to hold the wrench tool and rotate the screw rod in the opposite direction to move the trolley switch box into the cabinet. Due to the large number of switch cabinets in the substation, the labor intensity of manually holding the wrench tool to rotate the screw rod to move out or move in the low-voltage switch cabinet is high. Summary of the invention

[0003] The technical problem to be solved by the present invention is: at present, when maintaining the low-voltage switch cabinet in the substation, the operator needs to hold a wrench tool to rotate the screw rod, which is labor-intensive.

[0004] In order to solve the above technical problems, the purpose of the present invention is to provide an auxiliary equipment for substation maintenance, including a car body, a lifting device, a support arm, a mounting seat, a guide rail, a rotary drive device and a wrench head; the lower end of the lifting device is connected to the car body, and the upper end of the lifting device is horizontally rotated and connected to the support arm; the end of the support arm away from the lifting device extends to one side of the lifting device and is rotated to connect to the mounting seat, the guide rail is connected to the mounting seat, the rotary drive device is slidably connected to the guide rail, and the rotating axis of the rotary drive device is perpendicular to the length direction of the guide rail; the wrench head is connected to the output end of the rotary drive device, and the wrench head matches the wrench portion of the screw rod of the low-voltage switch cabinet.

[0005] As a preferred solution, the support arm includes an elastic compression member and a first connecting rod, a second connecting rod, a third connecting rod and a fourth connecting rod connected in sequence to form a parallelogram structure;

[0006] The first connecting rod and the third connecting rod are both arranged vertically, the lower end of the first connecting rod is horizontally rotatably connected to the lifting device, the second connecting rod and the fourth connecting rod are both arranged tilted up and down, the lower ends of the second connecting rod and the third connecting rod are respectively hinged to the upper end and the lower end of the first connecting rod, and the upper ends of the second connecting rod and the third connecting rod are respectively hinged to the upper end and the lower end of the fourth connecting rod;

[0007] The elastic compression member is arranged to be tilted up and down, the lower end of the elastic compression member is hinged to the first connecting rod, and the other end of the elastic compression member is hinged to the third connecting rod or the second connecting rod.

[0008] As a preferred solution, the first connecting rod is connected to an adjusting block which can move up and down, and the lower end of the elastic compression member is hinged to the adjusting block.

[0009] As a preferred solution, the first connecting rod is rotatably connected to an adjusting screw which is arranged vertically or tilted up and down, and the adjusting block is threadedly assembled on the outside of the adjusting screw.

[0010] As a preferred solution, a stopping structure for stopping the second connecting rod from swinging upward is provided at the upper end of the first connecting rod.

[0011] As a preferred embodiment, the stopping structure includes a mounting plate and an adjusting bolt, wherein the mounting plate is arranged at the upper end of the first connecting rod, and the mounting plate is provided with threaded holes arranged vertically or inclined up and down, the adjusting bolt is threadedly assembled in the threaded hole, and the lower end of the adjusting bolt abuts against the second connecting rod.

[0012] As a preferred solution, a first gripping handle and a second gripping handle arranged at intervals are provided on one side of the rotary drive device.

[0013] A maintenance method for a substation, using the above-mentioned auxiliary equipment for substation maintenance, the maintenance method for the substation comprises the following steps:

[0014] Move the vehicle body to the location of the low-voltage switchgear;

[0015] Adjust the height of the wrench head to a position close to the wrench portion of the screw rod in the low-voltage switch cabinet;

[0016] The rotating drive device is manually rotated and moved to cover the wrench head on the outside of the wrench portion;

[0017] The rotary drive device is started, and the screw rod is driven to rotate by the rotary drive device.

[0018] As a preferred solution, adjusting the height position of the wrench head to be close to the screw position in the low-voltage switch cabinet includes: adjusting the height position of the rotary drive device by a lifting device to adjust the height of the wrench head to be slightly higher than the wrench portion;

[0019] Aligning the wrench head with the wrench portion of the screw rod also includes: manually pressing the rotation drive device downward to compress the elastic compression member to lower the rotation drive device so that the wrench head is axially aligned with the wrench portion.

[0020] As a preferred solution, the height position of the rotating drive device is roughly adjusted by a lifting device, and the maintenance method of the substation also includes: finely adjusting the highest point position of the rotating drive device by rotating the adjusting bolt; adjusting the position of the adjusting block by rotating the adjusting screw to adjust the elastic force of the elastic compression member, so that the pressing force of a person pressing downward on the rotating drive device can overcome the elastic force of the elastic compression member.

[0021] Compared with the prior art, the present invention has the following beneficial effects:

[0022] The auxiliary equipment for substation maintenance of the present invention comprises a vehicle body, a lifting device, a support arm, a mounting seat, a guide rail, a rotary drive device and a wrench head. The lower end of the lifting device is connected to the vehicle body, and the upper end of the lifting device is horizontally rotated and connected to the support arm; one end of the support arm away from the lifting device is horizontally rotated and connected to the mounting seat, the guide rail is connected to the mounting seat, the rotary drive device is slidably connected to the guide rail, and the rotating axis of the rotary drive device is perpendicular to the length direction of the guide rail; the wrench head is connected to the output end of the rotary drive device, and the wrench head matches the wrench portion of the screw rod of the low-voltage switch cabinet. When in use, the auxiliary equipment for substation maintenance of the present invention is moved to the cabinet body of the low-voltage switch cabinet by moving the vehicle body, and then the rotary drive device is manually rotated and moved to set the wrench head on the outside of the wrench portion of the screw rod, and then the rotary drive device is started to screw the screw rod, and there is no need to manually screw the screw rod. After the screwing is completed, the auxiliary equipment for substation maintenance of the present invention is moved to another low-voltage switch cabinet by using the vehicle body, and similar operations can be performed on the other switch cabinet, which greatly reduces the labor intensity of the operating personnel. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 An axonometric diagram of the auxiliary equipment for substation maintenance of the present invention;

[0024] Figure 2 A cross-sectional view of the auxiliary equipment for substation maintenance of the present invention;

[0025] Figure 3 is a structural schematic diagram of a rotary drive device;

[0026] In the figure, 1. vehicle body, 11. support plate, 12. wheel body, 13. gripping frame, 2. lifting device, 21. adjusting handle, 3. supporting arm, 31. first connecting rod, 32. second connecting rod, 33. third connecting rod, 34. fourth connecting rod, 35. elastic compression member, 36. adjusting block, 37. adjusting screw, 38. stopping structure, 381. mounting plate, 382. adjusting bolt, 4. mounting seat, 5. guide rail, 6. rotating drive device, 61. first gripping handle, 62. second gripping handle, 63. starting switch, 64. forward and reverse switching switch, 7. wrench head, 8. battery. DETAILED DESCRIPTION

[0027] The specific implementation of the present invention is further described in detail below in conjunction with the accompanying drawings and examples. The following examples are used to illustrate the present invention, but are not intended to limit the scope of the present invention.

[0028] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "left", "right", "top", "bottom", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. It should be understood that the terms "first", "second", etc. are used in the present invention to describe various information, but such information should not be limited to these terms, which are only used to distinguish the same type of information from each other. For example, without departing from the scope of the present invention, the "first" information may also be referred to as the "second" information, and similarly, the "second" information may also be referred to as the "first" information.

[0029] like Figures 1 to 3 As shown, a preferred embodiment of the auxiliary equipment for substation maintenance of the present invention includes a car body 1, a lifting device 2, a support arm 3, a mounting seat 4, a guide rail 5, a rotary drive device 6 and a wrench head 7; the lower end of the lifting device 2 is connected to the car body 1, and the upper end of the lifting device 2 is horizontally rotated to connect to the support arm 3; the end of the support arm 3 away from the lifting device 2 extends to one side of the lifting device 2, and the end of the support arm 3 away from the lifting device 2 is horizontally rotated to connect to the mounting seat 4, the guide rail 5 is connected to the mounting seat 4, the rotary drive device 6 is slidably connected to the guide rail 5, and the rotating axis of the rotary drive device 6 is perpendicular to the length direction of the guide rail 5; the wrench head 7 is connected to the output end of the rotary drive device 6, and the wrench head 7 matches the wrench portion of the screw rod of the low-voltage switch cabinet. When in use, first move the vehicle body 1 to the location of the low-voltage switch cabinet; then adjust the height of the rotary drive device 6 into place by adjusting the lifting device 2. Since the support arm 3 extends to one side of the lifting device 2, with the cooperation of the rotational freedom between the support arm 3 and the lifting device 2, the rotational freedom between the mounting seat 4 and the support arm 3, and the horizontal freedom of the guide rail 5, the operator pushes the rotary drive device 6 by hand and rotates the rotary drive device 6 at the same time, so that the wrench head 7 can be aligned with the wrench part and the wrench head 7 can be put on the outside of the wrench part. Thereafter, the rotary drive device 6 is used to drive the wrench head 7 to rotate, so that the screw rod can be screwed. During the screw screw screwing process, the operator does not need to hold the rotary drive device 6 all the time, and the wrench head 7 can be quickly and conveniently put on the wrench part by pushing and rotating the rotary drive device 6 by the worker's hand, which is easy to operate.

[0030] Among them, the support arm 3 includes an elastic compression member 35 and a first connecting rod 31, a second connecting rod 32, a third connecting rod 33 and a fourth connecting rod 34 connected in sequence to form a parallelogram structure; the first connecting rod 31 and the third connecting rod 33 are both arranged vertically, the lower end of the first connecting rod 31 is horizontally rotatably connected to the lifting device 2, the second connecting rod 32 and the fourth connecting rod 34 are both arranged tilted up and down, the lower ends of the second connecting rod 32 and the third connecting rod 33 are respectively hinged to the upper end and lower end of the first connecting rod 31, and the upper ends of the second connecting rod 32 and the third connecting rod 33 are respectively hinged to the upper end and lower end of the fourth connecting rod 34; the elastic compression member 35 is arranged tilted up and down, the lower end of the elastic compression member 35 is hinged to the first connecting rod 31, and the other end of the elastic compression member 35 is hinged to the third connecting rod 33 or the second connecting rod 32. Specifically, there are a large number of low-voltage switch cabinets in the substation, and a plurality of low-voltage switch cabinets are often arranged side by side. The heights of the screw rods of each low-voltage switch cabinet are often not much different. However, due to the influence of construction accuracy, there will be a certain error in the height of the screw rods of each low-voltage switch cabinet. In this embodiment, the elastic force of the elastic compression member 35 is used to keep the parallelogram structure formed by the first connecting rod 31, the second connecting rod 32, the third connecting rod 33 and the fourth connecting rod 34 stable. Before using the auxiliary equipment for substation maintenance of the present invention, the height of the rotary drive device 6 can be adjusted to be slightly higher through the lifting device 2, so that the height of the wrench head 7 is slightly higher than the wrench part, and then After the auxiliary equipment for substation maintenance of the present invention is moved to the position of the low-voltage switch cabinet, the person manually presses the rotating drive device 6 or the mounting seat 4 slightly downward to make the height of the wrench head 7 match the wrench portion. While the person manually presses the rotating drive device 6, the wrench head 7 is sleeved on the outside of the wrench portion. After the wrench head 7 is sleeved on the outside of the wrench portion, due to the blocking effect of the wrench portion, the wrench head 7 sleeved on the outside of the wrench portion will no longer rebound upward. The provision of the elastic compression member 35 makes it unnecessary to frequently adjust the height of the lifting device 2 when switching the auxiliary equipment for substation maintenance of the present invention between different low-voltage switch cabinets, thereby further improving the maintenance efficiency.

[0031] Furthermore, in order to facilitate the adjustment of the elastic force of the elastic compression member 35, in this embodiment, the first connecting rod 31 is connected to an adjustment block 36 that can move up and down, and the lower end of the elastic compression member 35 is hinged on the adjustment block 36. Specifically, when the adjustment block 36 is moved upward, the degree of compression of the elastic compression member 35 increases, and the elastic force of the elastic compression member 35 on the mounting seat 4 increases. When the adjustment block 36 is moved downward, the degree of compression of the elastic compression member 35 decreases, and the elastic force of the elastic compression member 35 on the mounting seat 4 decreases. The setting of the adjustment block 36 facilitates the operator to adjust the elastic force of the elastic compression member 35 on the mounting seat 4 to a level suitable for the operator to press the mounting seat 4 downward or the rotating drive device 6.

[0032] In this embodiment, the first connecting rod 31 is rotatably connected with an adjusting screw 37 arranged vertically or tilted up and down, and the adjusting block 36 is threadedly assembled on the outside of the adjusting screw 37. Specifically, the adjusting screw 37 and the adjusting block 36 constitute a screw slider mechanism, and the height of the adjusting block 36 can be adjusted by rotating the adjusting screw 37. A lug is provided on one side of the adjusting block 36, and the elastic compression member 35 includes a sleeve, a piston rod slidably inserted in the sleeve, and a compression spring arranged in the sleeve, one end of the compression spring abuts against the insertion end of the piston rod, and the other end of the compression spring abuts against the barrel wall of the sleeve, the extended section of the piston rod is hinged to the lug, and the end of the sleeve is hinged to the upper end of the second connecting rod 32.

[0033] In order to ensure the stability of the parallelogram structure formed by the first connecting rod 31, the second connecting rod 32, the third connecting rod 33 and the fourth connecting rod 34, in this embodiment, the upper end of the first connecting rod 31 is provided with a stopping structure 38 for stopping the second connecting rod 32 from swinging upward. The stopping structure 38 can limit the extreme angle of the upward swing of the parallelogram structure. When the parallelogram structure is in the extreme position of the upward swing, the stopping structure 38 abuts against the upper side wall of the second connecting rod 32, and the elastic compression member 35 can limit the downward swing of the parallelogram structure. The parallelogram structure remains stable under the constraints of the stopping structure 38 and the elastic compression member 35.

[0034] Specifically, the stop structure 38 includes a mounting plate 381 and an adjusting bolt 382. The mounting plate 381 is arranged at the upper end of the first connecting rod 31. The mounting plate 381 is provided with a threaded hole arranged vertically or tilted up and down. The adjusting bolt 382 is threadedly assembled in the threaded hole, and the lower end of the adjusting bolt 382 abuts against the second connecting rod 32. By rotating the adjusting bolt 382, ​​the upper swing limit of the parallelogram structure can be changed, and the pre-compression amount of the elastic compression member 35 can be adjusted. When the height position of the mounting seat 4 needs to be fine-tuned, only the adjusting bolt 382 is rotated, and the adjusting screw 37 is not rotated, that is, only the pre-compression amount of the elastic compression member 35 is changed. After the adjusting bolt 382 is adjusted to the right position, if the mounting seat 4 and the rotating drive device 6 cannot be pressed down smoothly by hand, the adjusting block 36 is moved down by rotating the adjusting screw 37, thereby reducing the pre-compression amount of the elastic compression member 35. At this time, during the process of rotating the adjusting screw 37, the lower end of the adjusting bolt 382 always abuts against the second connecting rod 32, and the height position of the mounting seat 4 does not change.

[0035] To facilitate the operator to move and rotate the rotary drive device 6, in this embodiment, a first gripping handle 61 and a second gripping handle 62 are arranged at intervals on one side of the rotary drive device 6. To facilitate operation, in this embodiment, a start switch 63 of the rotary drive device 6 is arranged on one of the first gripping handle 61 and the second gripping handle 62.

[0036] In this embodiment, the mounting seat 4 is connected to the upper end of the third connecting rod 33 through a turntable bearing, the lower end of the first connecting rod 31 is connected to the upper end of the lifting device 2 through a turntable bearing, the rotation drive device 6 is a motor, the upper end or the lower end of the mounting seat 4 is connected to a battery 8, and a forward and reverse switching switch 64 is provided on the outer side of the rotation drive device 6. Pressing the forward and reverse switching switch 64 can change the rotation direction of the rotation drive device 6. The lifting device 2 can use an electric push rod or a hydraulic cylinder. An adjustment handle 21 is provided on the outer side of the lifting device 2. By swinging the adjustment handle 21 up and down, the height of the lifting device 2 can be adjusted. The vehicle body 1 includes a support plate 11 and a plurality of wheel bodies 12 arranged at the lower end of the support plate 11. Each wheel body 12 has a brake pedal. A grip frame 13 is provided at one end of the support plate 11 to facilitate operators to move the vehicle body 1.

[0037] An embodiment of a maintenance method for a substation adopts the above-mentioned auxiliary equipment for substation maintenance, and the maintenance method for the substation includes the following steps:

[0038] Move the vehicle body 1 to the location of the low-voltage switch cabinet;

[0039] Adjust the height of the wrench head 7 to a position close to the wrench portion of the screw rod in the low-voltage switch cabinet;

[0040] The rotating drive device 6 is manually rotated and moved to sleeve the wrench head 7 on the outside of the wrench portion;

[0041] The rotary drive device 6 is started, and the screw rod is driven to rotate by the rotary drive device 6 .

[0042] Wherein, adjusting the height position of the wrench head 7 to be close to the screw position in the low-voltage switch cabinet includes: adjusting the height position of the rotary drive device 6 by the lifting device 2, and adjusting the height of the wrench head 7 to be slightly higher than the wrench portion;

[0043] Aligning the wrench head 7 with the wrench portion of the screw rod also includes: manually pressing the rotary drive device 6 downward to compress the elastic compression member 35 to lower the rotary drive device 6 so that the wrench head 7 is axially aligned with the wrench portion.

[0044] Among them, the height position of the rotating drive device 6 is adjusted by the lifting device 2 to achieve coarse adjustment of the height position of the rotating drive device 6; the maintenance method of the substation also includes: finely adjusting the highest point position of the rotating drive device 6 by rotating the adjusting bolt 382; adjusting the position of the adjusting block 36 by rotating the adjusting screw 37, and then adjusting the elastic force of the elastic compression member 35, so that the pressing force of the rotating drive device 6 pressed downward by a hand can overcome the elastic force of the elastic compression member 35.

[0045] It has been verified that when the substation maintenance auxiliary equipment of this embodiment is used to maintain the low-voltage switchgear of the substation, only one person is needed to operate and supervise, which reduces the number of people involved by 50% and reduces the physical exertion of the operators during operation, thereby reducing labor intensity: the maintenance of a single low-voltage switchgear usually only takes 15 minutes, reducing the maintenance time by 75% and improving operational safety.

[0046] In summary, the auxiliary equipment for substation maintenance of the present invention includes a vehicle body 1, a lifting device 2, a support arm 3, a mounting seat 4, a guide rail 5, a rotary drive device 6 and a wrench head 7. The lower end of the lifting device 2 is connected to the vehicle body 1, and the upper end of the lifting device 2 is horizontally rotatably connected to the lower end of the support arm 3; the upper end of the support arm 3 is horizontally rotatably connected to the mounting seat 4, the guide rail 5 is connected to the mounting seat 4, the rotary drive device 6 is slidably connected to the guide rail 5, and the rotating axis of the rotary drive device 6 is perpendicular to the length direction of the guide rail 5; the wrench head 7 is connected to the output end of the rotary drive device 6, and the wrench head 7 is connected to the output end of the rotary drive device 6. The head 7 matches the tightening part of the screw rod of the low-voltage switch cabinet. When in use, the auxiliary equipment for substation maintenance of the present invention is moved to the cabinet body of the low-voltage switch cabinet by moving the vehicle body 1, and then the rotating drive device 6 is manually rotated and moved to sleeve the tightening head 7 on the outside of the tightening part of the screw rod. After that, the screw rod can be tightened by starting the rotating drive device 6. There is no need to tighten the screw rod manually. After the tightening is completed, the auxiliary equipment for substation maintenance of the present invention is moved to another low-voltage switch cabinet by using the vehicle body 1, and similar operations can be performed on the other switch cabinet, which greatly reduces the labor intensity of the operating personnel.

[0047] The above is only a preferred embodiment of the present invention. It should be pointed out that for ordinary technicians in this technical field, several improvements and substitutions can be made without departing from the technical principles of the present invention. These improvements and substitutions should also be regarded as the scope of protection of the present invention.

Claims

1. A substation maintenance auxiliary equipment, characterized in that: The utility model comprises a vehicle body (1), a lifting device (2), a support arm (3), a mounting seat (4), a guide rail (5), a rotary drive device (6) and a wrench head (7); the lower end of the lifting device (2) is connected to the vehicle body (1), and the upper end of the lifting device (2) is horizontally rotatably connected to the support arm (3); one end of the support arm (3) away from the lifting device (2) extends toward one side of the lifting device (2) and is rotatably connected to the mounting seat (4); the guide rail (5) is connected to the mounting seat (4); the rotary drive device (6) is slidably connected to the guide rail (5), and the rotation axis of the rotary drive device (6) is perpendicular to the length direction of the guide rail (5); the wrench head (7) is connected to the output end of the rotary drive device (6), and the wrench head (7) matches the wrench portion of the screw rod of the low-voltage switch cabinet.

2. The auxiliary equipment for substation maintenance according to claim 1, characterized in that: The support arm (3) comprises an elastic compression member (35) and a first connecting rod (31), a second connecting rod (32), a third connecting rod (33) and a fourth connecting rod (34) which are sequentially connected to form a parallelogram structure; The first connecting rod (31) and the third connecting rod (33) are both arranged vertically, the lower end of the first connecting rod (31) is horizontally rotatably connected to the lifting device (2), the second connecting rod (32) and the fourth connecting rod (34) are both arranged tilted up and down, the lower ends of the second connecting rod (32) and the third connecting rod (33) are respectively hinged to the upper end and lower end of the first connecting rod (31), and the upper ends of the second connecting rod (32) and the third connecting rod (33) are respectively hinged to the upper end and lower end of the fourth connecting rod (34); The elastic compression member (35) is arranged tilted up and down, the lower end of the elastic compression member (35) is hinged to the first connecting rod (31), and the other end of the elastic compression member (35) is hinged to the third connecting rod (33) or the second connecting rod (32).

3. The auxiliary equipment for substation maintenance according to claim 2, characterized in that: The first connecting rod (31) is connected to an adjusting block (36) which can move up and down, and the lower end of the elastic compression member (35) is hinged on the adjusting block (36).

4. The auxiliary equipment for substation maintenance according to claim 3, characterized in that: The first connecting rod (31) is rotatably connected to an adjusting screw (37) arranged vertically or tilted up and down, and the adjusting block (36) is threadedly assembled on the outside of the adjusting screw (37).

5. The auxiliary equipment for substation maintenance according to claim 2, characterized in that: A stopping structure (38) for stopping the second connecting rod (32) from swinging upward is provided at the upper end of the first connecting rod (31).

6. The auxiliary equipment for substation maintenance according to claim 5, characterized in that: The stopping structure (38) includes a mounting plate (381) and an adjusting bolt (382). The mounting plate (381) is arranged at the upper end of the first connecting rod (31). The mounting plate (381) is provided with a threaded hole arranged vertically or inclined up and down. The adjusting bolt (382) is threadedly assembled in the threaded hole, and the lower end of the adjusting bolt (382) abuts against the second connecting rod (32).

7. The auxiliary equipment for substation maintenance according to claim 1, characterized in that: A first gripping handle (61) and a second gripping handle (62) arranged at intervals are provided on one side of the rotary drive device (6).

8. A maintenance method for a substation, characterized in that: Using the auxiliary equipment for substation maintenance according to any one of claims 1 to 7, the substation maintenance method comprises the following steps: Moving the vehicle body (1) to the location of the low-voltage switch cabinet; The height position of the wrench head (7) is adjusted to a position close to the wrench portion of the screw rod in the low-voltage switch cabinet; The rotating driving device (6) is manually rotated and moved to sleeve the wrench head (7) on the outer side of the wrench portion; The rotary drive device (6) is started, and the screw rod is driven to rotate by the rotary drive device (6).

9. The maintenance method of a substation according to claim 8, characterized in that: Adjusting the height position of the wrench head (7) to be close to the screw rod position in the low-voltage switch cabinet comprises: adjusting the height position of the rotary drive device (6) by means of a lifting device (2) to adjust the height of the wrench head (7) to be slightly higher than the wrench portion; Aligning the wrench head (7) with the wrench portion of the screw rod also includes: manually pressing the rotary drive device (6) downward to compress the elastic compression member (35) and lower the rotary drive device (6) so that the wrench head (7) is axially aligned with the wrench portion.

10. The maintenance method of a substation according to claim 8, characterized in that: The height position of the rotary drive device (6) is roughly adjusted by the lifting device (2), and the maintenance method of the substation further comprises: The highest point position of the rotary drive device (6) is finely adjusted by rotating the adjusting bolt (382); the position of the adjusting block (36) is adjusted by rotating the adjusting screw (37) to adjust the elastic force of the elastic compression member (35), so that the pressing force of a person pressing downward on the rotary drive device (6) can overcome the elastic force of the elastic compression member (35).

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