Rail transit vehicle maintenance device and method

Abstract

The invention relates to the technical field of rail vehicles, in particular to a rail transit vehicle maintenance and overhaul device and method.The rail transit vehicle maintenance and overhaul device comprises a walking trolley and further comprises a height adjusting mechanism, a movable base, a direction adjusting mechanism, a rotating disc, an angle adjusting mechanism, a bed board, an extension board, a baffle and a protection board; the direction of the rotating disc is adjusted through the direction adjusting mechanism, so that the direction of the bed board can be adjusted, and the angle of the bed board is adjusted through the angle adjusting mechanism, so that the height, the direction and the angle of the bed board can be adjusted according to actual requirements; therefore, the actual use effect of the maintenance device is improved, and the technical problem that the actual use effect of the maintenance device is reduced due to the fact that the height and the direction of the bed board cannot be adjusted according to actual requirements due to the fact that an existing maintenance device cannot adjust the height and the direction of the bed board is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of rail vehicles, and in particular to a rail transit vehicle maintenance and repair device and method. Background Art

[0002] Rail transit refers to a type of transportation tool or transportation system in which operating vehicles need to travel on specific tracks. In order to ensure the safe and stable operation of rail transit vehicles, rail transit vehicles need to be regularly inspected and maintained. Existing inspection work is usually carried out in the maintenance channel of the maintenance station. The maintenance personnel inspect the bottom of the vehicle in the maintenance channel. When performing maintenance work, the maintenance personnel need to look up for a long time, which causes great damage to the cervical spine.

[0003] Prior art CN213083167U discloses a rail transit vehicle maintenance and inspection device, which is provided with a walking trolley, which is dragged by an electric hoist and a wire rope, and a bed board is provided on the upper side of the walking trolley. One end of the bed board can be lifted up by an electric push rod, so that the maintenance personnel can lie on their backs on the bed board to inspect the rail vehicle, which is more comfortable and convenient. By providing a protective frame on the upper side of the bed board, the maintenance personnel's head is located in the protective frame during inspection, which can effectively protect the maintenance personnel's head and provide higher safety. Compared with the traditional rail transit vehicle maintenance and inspection device, the utility model has better comfort by providing an angle-adjustable bed board, and higher safety by providing a protective frame on the bed board.

[0004] However, the above-mentioned maintenance device can only adjust the angle of the bed board, but cannot adjust the height and orientation of the bed board, resulting in the inability to adjust the height and orientation of the bed board according to actual needs, thereby reducing the actual use effect of the maintenance device. Summary of the invention

[0005] The object of the present invention is to provide a rail transit vehicle maintenance and repair device and method, which solves the technical problem that the existing repair device can only adjust the angle of the bed board but cannot adjust the height and orientation of the bed board, resulting in the inability to adjust the height and orientation of the bed board according to actual needs, thereby reducing the actual use effect of the repair device.

[0006] To achieve the above-mentioned objectives, the present invention provides a rail transit vehicle maintenance and inspection device, including a traveling trolley, and also including a height adjustment mechanism, a movable seat, an azimuth adjustment mechanism, a rotating disk, an angle adjustment mechanism, a bed board, an extension plate, a baffle and a protective plate. The movable seat is located on the traveling trolley, the height adjustment mechanism is used to adjust the height of the movable seat, the movable seat has a rotating groove, the rotating disk is rotatably set in the rotating groove of the moving seat, the azimuth adjustment mechanism is used to adjust the azimuth of the rotating disk, the bed board is located on the rotating disk, the angle adjustment mechanism is used to adjust the angle of the bed board, the extension plate is slidably set in the bed board through a connecting spring, the baffle is set on the extension plate, and the protective plate is slidably set in the bed board and is located on the extension plate.

[0007] The walking trolley comprises a vehicle body and universal wheels. There are four universal wheels, which are movably arranged around the vehicle body.

[0008] Among them, the height adjustment mechanism includes a support frame, a rotating plate and a movable block. The support frame is arranged on the vehicle body. The left and right sides of the support frame are respectively connected to the rotating plates by rotating rods. The movable block is rotatably arranged outside each rotating plate, and each movable block is slidably arranged under the moving seat.

[0009] Wherein, one end of the rotating rods on the left and right sides of the supporting frame extending out of the supporting frame is connected to a driving part, and the driving part is arranged on the vehicle body.

[0010] Wherein, the height adjustment mechanism further includes a fixed block and a support block, wherein the fixed block is arranged on the vehicle body, the support block is arranged under the movable seat, and the support block is slidably arranged in the fixed block via a first spring.

[0011] Wherein, the angle adjustment mechanism comprises a rotating part and a rotating block, the rotating part is arranged on the rotating disk, and the rotating block is connected to the output shaft of the rotating part and is arranged under the bed board.

[0012] The present invention also provides a rail transit vehicle maintenance and repair method, comprising the following steps:

[0013] The universal wheel is rotated under the vehicle body to drive the vehicle body to move on the ground, and the vehicle body is moved to a designated position, and then the brake of the universal wheel is stepped on to stop the movement of the universal wheel, so as to fix the vehicle body;

[0014] Allow the extension plate to slide transversely inside the bed board, driving the baffle plate to move transversely outside the bed board, allowing the maintenance personnel's head and body to lie inside the bed board, with their feet aligned with the baffle plate;

[0015] Then, the height adjustment mechanism drives the movable seat to move up and down above the vehicle body, driving the bed board to move up and down above the vehicle body, thereby adjusting the height of the bed board;

[0016] The azimuth adjustment mechanism drives the rotating disk to rotate in the rotating groove of the movable seat, driving the bed board to rotate horizontally above the vehicle body, thereby adjusting the azimuth of the bed board;

[0017] The angle of the bed board is adjusted by driving the bed board to rotate vertically on the rotating disk through an angle adjustment mechanism;

[0018] By adjusting the height, orientation and angle of the bed plate, the maintenance personnel are moved to the position to be maintained of the rail transit vehicle, and the bottom of the rail transit vehicle is maintained.

[0019] The present invention provides a rail transit vehicle maintenance and inspection device and method. The height of the movable seat is adjusted by the height adjustment mechanism, so that the height of the bed board can be adjusted. The orientation of the rotating disk is adjusted by the orientation adjustment mechanism, so that the orientation of the bed board can be adjusted. The angle of the bed board is adjusted by the angle adjustment mechanism, and the height and orientation of the bed board are adjusted, so that the height, orientation and angle of the bed board can be adjusted according to actual needs, thereby improving the actual use effect of the inspection and repair device, and solving the technical problem that the existing inspection and repair device can only adjust the angle of the bed board but not the height and orientation of the bed board, resulting in the inability to adjust the height and orientation of the bed board according to actual needs, thereby reducing the actual use effect of the inspection and repair device. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] 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 or the description of the prior art are briefly introduced below.

[0021] Figure 1 It is a schematic diagram of the overall structure of the rail transit vehicle maintenance and repair device according to the first embodiment of the present invention.

[0022] Figure 2 FIG. 1 is a schematic cross-sectional view along a rotating disk according to a first embodiment of the present invention.

[0023] Figure 3 FIG. 1 is a schematic cross-sectional view of a driving portion according to a first embodiment of the present invention.

[0024] Figure 4 It is a flow chart of the rail transit vehicle maintenance and repair method according to the second embodiment of the present invention.

[0025] In the figure: 101-moving seat, 102-rotating plate, 103-bed board, 104-extension plate, 105-baffle, 106-protective plate, 107-body, 108-universal wheel, 109-support frame, 110-rotating plate, 111-movable block, 112-fixed block, 113-support block, 114-rotating part, 115-rotating block, 116-fixed rod, 117-support rod, 118-steering block, 119-connecting block, 120-driving part, 121-connecting spring, 122-rotating part, 123-rotating rod, 124-first spring, 125-second spring, 126-connecting pin. DETAILED DESCRIPTION

[0026] Embodiments of the present invention are described in detail below. Examples of the embodiments are shown in the accompanying drawings. The embodiments described below with reference to the accompanying drawings are exemplary and are intended to be used to explain the present invention, but should not be construed as limiting the present invention.

[0027] First embodiment:

[0028] See also Figures 1 to 3 The present invention provides a rail transit vehicle maintenance and inspection device, including a traveling trolley, a height adjustment mechanism, a movable seat 101, an azimuth adjustment mechanism, a rotating disk 102, an angle adjustment mechanism, a bed plate 103, an extension plate 104, a baffle 105 and a protective plate 106, the traveling trolley includes a body 107 and a universal wheel 108, the height adjustment mechanism includes a support frame 109, a rotating plate 110, a movable block 111, a fixed block 112 and a support block 113, and the angle adjustment mechanism includes a rotating part 114, a rotating block 115, a fixed rod 116, a support rod 117, a steering block 118 and a connecting block 119.

[0029] In this embodiment, the height of the movable seat 101 is adjusted by the height adjustment mechanism, so that the height of the bed board 103 can be adjusted, the orientation of the rotating disk 102 is adjusted by the orientation adjustment mechanism, so that the orientation of the bed board 103 can be adjusted, the angle of the bed board 103 is adjusted by the angle adjustment mechanism, and the height and orientation of the bed board 103 are adjusted, so that the height, orientation and angle of the bed board 103 can be adjusted according to actual needs, thereby improving the actual use effect of the maintenance device, and solving the technical problem that the existing maintenance device can only adjust the angle of the bed board 103 but cannot adjust the height and orientation of the bed board 103, resulting in the inability to adjust the height and orientation of the bed board 103 according to actual needs, thereby reducing the actual use effect of the maintenance device.

[0030] Wherein, the moving seat 101 is located on the walking trolley, the height adjustment mechanism is used to adjust the height of the moving seat 101, the moving seat 101 has a rotation groove, the rotating disk 102 is rotatably set in the rotation groove of the moving seat 101, the azimuth adjustment mechanism is used to adjust the azimuth of the rotating disk 102, the bed board 103 is located on the rotating disk 102, the angle adjustment mechanism is used to adjust the angle of the bed board 103, the extension plate 104 is slidably set in the bed board 103 through the connecting spring 121, the baffle 105 is set on the extension plate 104, the protective plate 106 is slidably set in the bed board 103 and is located on the extension plate 104, the azimuth adjustment mechanism is a rotating part 122, the rotating part 122 is set in the rotation groove of the moving seat 101, and the output shaft of the rotating part 122 is connected to the rotating disk 102, and drives the rotating disk 102 The bed board 103 rotates along its own axis in the rotating groove of the movable seat 101, and has a first slide groove and a second slide groove, the first slide groove is located on the second slide groove, the protective plate 106 is slidably arranged in the first slide groove, and the protective plate 106 is made of transparent material, so that the protective plate 106 can protect the head and body of the maintenance personnel, and will not affect the maintenance personnel's maintenance of the vehicle fault, the extension plate 104 is slidably arranged in the second slide groove through the connecting spring 121, so that the distance between the bed board 103 and the extension plate 104 can be adjusted according to the height of the maintenance personnel, so that maintenance personnel of different heights can use the maintenance device to perform vehicle maintenance work, at this time, the connecting spring 121 will be extended and retracted, and because the connecting spring 121 has a self-recovering effect, the connecting spring 121 can buffer the lateral sliding of the extension plate 104.

[0031] Secondly, there are four universal wheels 108, which are movably arranged around the vehicle body 107. The universal wheels 108 are provided with brakes. The brakes of the universal wheels 108 are stepped on to stop the movement of the universal wheels 108. The universal wheels 108 rotate under the vehicle body 107 to drive the vehicle body 107 to move in the front, back, left, and right directions on the ground, thereby ultimately driving the maintenance device to move in the front, back, left, and right directions on the ground.

[0032] Again, the support frame 109 is set on the vehicle body 107, and the left and right sides of the support frame 109 are rotatably connected to the rotating plates 110 through the rotating rods 123 respectively. The movable blocks 111 are rotatably set outside each of the rotating plates 110, and each of the movable blocks 111 is slidably set under the moving seat 101. The rotating plates 110 in the support frame 109 are rotated to drive the movable blocks 111 to slide horizontally under the moving seat 101. At this time, the rotating plates 110 can be rotated in the movable blocks 111, so that the two rotating plates 110 can be expanded or folded, and then the moving seat 101 can be driven to move up and down above the vehicle body 107, so as to adjust the height of the moving seat 101.

[0033] At the same time, the rotating rods 123 on the left and right sides of the support frame 109 extend out of one end of the support frame 109 and are connected to a driving unit 120, and the driving unit 120 is arranged on the vehicle body 107. The output shaft of the driving unit 120 is connected to the rotating rod 123, and drives the rotating rod 123 to rotate along its own axis in the support frame 109, thereby driving the rotating plate 110 to rotate along the axis of the rotating rod 123 in the support frame 109, so that the two rotating plates 110 can be expanded or folded in the support frame 109.

[0034] In addition, the fixed block 112 is arranged on the vehicle body 107, the support block 113 is arranged under the movable seat 101, and the support block 113 is slidably arranged in the fixed block 112 through the first spring 124, the fixed block 112 has a slide groove, and the support block 113 has a protrusion, the protrusion of the support block 113 is located in the slide groove of the fixed block 112, and slides up and down in the slide groove of the fixed block 112, when the support block 113 slides up and down in the fixed block 112, the first spring 124 will expand and contract, because the first spring 124 has a self-restoring effect, so that the first spring 124 can buffer the up and down sliding of the support block 113, thereby realizing the buffering of the up and down movement of the movable seat 101.

[0035] Finally, the rotating part 114 is arranged on the rotating disk 102, the rotating block 115 is connected to the output shaft of the rotating part 114 and is arranged under the bed board 103, the fixed rod 116 is arranged on the rotating disk 102, the supporting rod 117 is arranged under the bed board 103, the supporting rod 117 is slidably arranged in the fixed rod 116 through the second spring 125, the steering block 118 is arranged on the supporting rod 117, the connecting block 119 is arranged under the bed board 103, and the steering block 118 and the connecting block 119 are rotatably connected, the rotating plate 110 and the movable block 111 as well as the steering block 118 and the connecting block 119 are connected by connecting pins 126 to realize the rotation of the rotating plate 110 in the movable block 111 and the rotation of the steering block 118 in the connecting block 119, the output shaft of the rotating part 114 is connected to the rotating block 115, and drives the rotating block 1 15 rotates along the axis of the output shaft of the rotating part 114 above the rotating disk 102, thereby driving the bed board 103 to rotate along the axis of the output shaft of the rotating part 114 above the rotating disk 102. The fixed rod 116, the support rod 117 and the second spring 125 are a group, and there are two groups in total, which are respectively arranged on the left and right sides between the rotating disk 102 and the bed board 103. When the bed board 103 rotates along the axis of the output shaft of the rotating part 114 above the rotating disk 102, the support rods 117 on the left and right sides below the bed board 103 can slide up and down in the fixed rods 116 at the corresponding positions to support the bed board 103. At this time, the second spring 125 will expand and contract. Since the second spring 125 has a self-restoring effect, the second spring 125 can buffer the up and down sliding of the support rod 117, thereby buffering the up and down movement of the bed board 103.

[0036] When using a rail transit vehicle maintenance and inspection device of the present embodiment, the universal wheel 108 is rotated under the vehicle body 107 to drive the vehicle body 107 to move in the front, back, left, and right directions on the ground, thereby driving the inspection device to move in the front, back, left, and right directions on the ground, and then the inspection device can be moved to any position. When the inspection device is moved to the specified position, the vehicle body 107 will also be moved to the specified position, and then the brake of the universal wheel 108 is stepped on to stop the movement of the universal wheel 108, thereby achieving the fixation of the vehicle body 107.

[0037] After fixing the vehicle body 107, the extension plate 104 is allowed to slide transversely in the bed board 103, driving the baffle plate 105 to move transversely outside the bed board 103, so as to adjust the distance between the extension plate 104 and the bed board 103, so that the distance between the bed board 103 and the extension plate 104 can be adjusted according to the height of the maintenance personnel, so that maintenance personnel of different heights can use the maintenance device to perform vehicle maintenance work. At this time, the connecting spring 121 will retract and contract. Since the connecting spring 121 has a self-recovering effect, the connecting spring 121 can buffer the transverse sliding of the extension plate 104. When the distance between the bed board 103 and the extension plate 104 is adjusted to a suitable position, the maintenance personnel's head and body are allowed to lie in the bed board 103 with their feet aligned with the baffle plate 105.

[0038] Then, the driving parts 120 on the left and right sides are respectively started, so that the power output by the output shaft of the driving part 120 drives the rotating rod 123 to rotate along its own axis in the support frame 109, thereby driving the rotating plate 110 to rotate along the axis of the rotating rod 123 in the support frame 109, so that the two rotating plates 110 on the left and right sides are unfolded or retracted in the support frame 109, driving the moving seat 101 to move up and down above the vehicle body 107, so that the bed board 103 moves up and down above the vehicle body 107. The first spring 124 can move, thereby realizing adjusting the height of the bed board 103. At this time, the protrusion of the support block 113 is located in the slide groove of the fixed block 112, and slides up and down in the slide groove of the fixed block 112. When the support block 113 slides up and down in the fixed block 112, the first spring 124 will retract and contract. Since the first spring 124 has a self-recovery effect, the first spring 124 can buffer the up and down sliding of the support block 113, thereby realizing buffering the up and down movement of the movable seat 101.

[0039] Start the rotating part 122 so that the power output by the output shaft of the rotating part 122 drives the rotating disk 102 to rotate along its own axis in the rotating groove of the movable seat 101, and drives the bed board 103 to rotate along the axis of the rotating disk 102 above the vehicle body 107, thereby adjusting the orientation of the bed board 103.

[0040] Start the rotating part 114 so that the power output by the output shaft of the rotating part 114 drives the rotating block 115 to rotate along the axis of the output shaft of the rotating part 114 above the rotating disk 102, thereby driving the bed board 103 to rotate along the axis of the output shaft of the rotating part 114 above the rotating disk 102, thereby adjusting the angle of the bed board 103. When the bed board 103 rotates along the axis of the output shaft of the rotating part 114 above the rotating disk 102, the support rods 117 on the left and right sides below the bed board 103 can slide up and down in the fixed rods 116 at corresponding positions to support the bed board 103. At this time, the second spring 125 will expand and contract. Since the second spring 125 has a self-restoring effect, the second spring 125 can buffer the up and down sliding of the support rod 117, thereby buffering the up and down movement of the bed board 103.

[0041] By adjusting the height, orientation and angle of the bed board 103, the maintenance personnel can be moved to the maintenance position of the rail transit vehicle to perform maintenance on the bottom of the rail transit vehicle, so that the height, orientation and angle of the bed board 103 can be adjusted according to actual needs, thereby improving the actual use effect of the maintenance device and solving the technical problem that the existing maintenance device can only adjust the angle of the bed board 103 but cannot adjust the height and orientation of the bed board 103, resulting in the inability to adjust the height and orientation of the bed board 103 according to actual needs, thereby reducing the actual use effect of the maintenance device.

[0042] Second embodiment:

[0043] Based on the first embodiment, please refer to Figure 4 The present invention also provides a rail transit vehicle maintenance and repair method, comprising the following steps:

[0044] S101, let the universal wheel 108 rotate under the vehicle body 107 to drive the vehicle body 107 to move on the ground, move the vehicle body 107 to a specified position, and then step on the brake of the universal wheel 108 to stop the movement of the universal wheel 108 to achieve the fixation of the vehicle body 107.

[0045] Specifically, the universal wheel 108 is rotated under the vehicle body 107 to drive the vehicle body 107 to move in the front, back, left, and right directions on the ground, thereby driving the maintenance device to move in the front, back, left, and right directions on the ground, and then the maintenance device can be moved to any position. When the maintenance device is moved to the specified position, the vehicle body 107 will also be moved to the specified position, and then the brake of the universal wheel 108 is stepped on to stop the movement of the universal wheel 108, thereby achieving the fixation of the vehicle body 107.

[0046] S102 , allowing the extension plate 104 to slide transversely inside the bed board 103 , driving the baffle plate 105 to move transversely outside the bed board 103 , allowing the maintenance personnel's head and body to lie inside the bed board 103 , with their feet aligned with the baffle plate 105 .

[0047] Specifically, after fixing the vehicle body 107, the extension plate 104 is allowed to slide laterally inside the bed board 103, driving the baffle plate 105 to move laterally outside the bed board 103, so as to adjust the distance between the extension plate 104 and the bed board 103, thereby being able to adjust the distance between the bed board 103 and the extension plate 104 according to the height of the maintenance personnel, so that maintenance personnel of different heights can use the maintenance device to perform vehicle maintenance work. At this time, the connecting spring 121 will retract and contract. Since the connecting spring 121 has a self-recovering effect, the connecting spring 121 can buffer the lateral sliding of the extension plate 104. When the distance between the bed board 103 and the extension plate 104 is adjusted to a suitable position, the maintenance personnel's head and body are allowed to lie inside the bed board 103 with their feet aligned with the baffle plate 105.

[0048] S103 , the height adjustment mechanism is then used to drive the movable seat 101 to move up and down above the vehicle body 107 , thereby driving the bed board 103 to move up and down above the vehicle body 107 , thereby adjusting the height of the bed board 103 .

[0049] Specifically, the driving units 120 on the left and right sides are respectively started, so that the power output by the output shaft of the driving unit 120 drives the rotating rod 123 to rotate along its own axis in the support frame 109, thereby driving the rotating plate 110 to rotate along the axis of the rotating rod 123 in the support frame 109, allowing the two rotating plates 110 on the left and right sides to be unfolded or retracted in the support frame 109, driving the moving seat 101 to move up and down above the vehicle body 107, so that the bed board 103 is moved up and down above the vehicle body 107. The first spring 124 can move up and down, thereby realizing adjusting the height of the bed board 103. At this time, the protrusion of the support block 113 is located in the slide groove of the fixed block 112, and slides up and down in the slide groove of the fixed block 112. When the support block 113 slides up and down in the fixed block 112, the first spring 124 will retract and contract. Since the first spring 124 has a self-recovery effect, the first spring 124 can buffer the up and down sliding of the support block 113, thereby realizing buffering the up and down movement of the movable seat 101.

[0050] S104, driving the rotating disk 102 to rotate in the rotating groove of the movable seat 101 through the orientation adjustment mechanism, driving the bed board 103 to rotate horizontally above the vehicle body 107, so as to adjust the orientation of the bed board 103.

[0051] Specifically, the rotating part 122 is started so that the power output by the output shaft of the rotating part 122 drives the rotating disk 102 to rotate along its own axis in the rotating groove of the movable seat 101, and drives the bed board 103 to rotate along the axis of the rotating disk 102 above the vehicle body 107, thereby adjusting the orientation of the bed board 103.

[0052] S105 , driving the bed board 103 to rotate vertically on the rotating disk 102 through an angle adjustment mechanism to adjust the angle of the bed board 103 .

[0053] Specifically, the rotating part 114 is started so that the power output by the output shaft of the rotating part 114 drives the rotating block 115 to rotate along the axis of the output shaft of the rotating part 114 above the rotating disk 102, thereby driving the bed board 103 to rotate along the axis of the output shaft of the rotating part 114 above the rotating disk 102, and then the angle of the bed board 103 can be adjusted. When the bed board 103 rotates along the axis of the output shaft of the rotating part 114 above the rotating disk 102, the support rods 117 on the left and right sides below the bed board 103 can slide up and down in the fixed rods 116 at corresponding positions to support the bed board 103. At this time, the second spring 125 will expand and contract. Since the second spring 125 has a self-recovering effect, the second spring 125 can buffer the up and down sliding of the support rod 117, thereby buffering the up and down movement of the bed board 103.

[0054] S106. By adjusting the height, orientation and angle of the bed plate 103, the maintenance personnel are moved to the position to be maintained of the rail transit vehicle, and the bottom of the rail transit vehicle is maintained.

[0055] Specifically, by adjusting the height, orientation and angle of the bed board 103, the maintenance personnel can be moved to the maintenance position of the rail transit vehicle to inspect the bottom of the rail transit vehicle, so that the height, orientation and angle of the bed board 103 can be adjusted according to actual needs, thereby improving the actual use effect of the maintenance device and solving the technical problem that the existing maintenance device can only adjust the angle of the bed board 103 but cannot adjust the height and orientation of the bed board 103, resulting in the inability to adjust the height and orientation of the bed board 103 according to actual needs, thereby reducing the actual use effect of the maintenance device.

[0056] What is disclosed above is only one or more preferred embodiments of the present application, and cannot be used to limit the scope of rights of the present application. Ordinary technicians in this field can understand that all or part of the processes of implementing the above embodiments and equivalent changes made according to the claims of the present application are still within the scope covered by the present application.

Claims

1. A rail transit vehicle maintenance and repair device, comprising a traveling trolley, characterized in that: It also includes a height adjustment mechanism, a movable seat, an azimuth adjustment mechanism, a rotating disk, an angle adjustment mechanism, a bed board, an extension plate, a baffle and a protective plate. The movable seat is located on the walking trolley. The height adjustment mechanism is used to adjust the height of the movable seat. The movable seat has a rotating groove. The rotating disk is rotatably set in the rotating groove of the movable seat. The azimuth adjustment mechanism is used to adjust the azimuth of the rotating disk. The bed board is located on the rotating disk. The angle adjustment mechanism is used to adjust the angle of the bed board. The extension plate is slidably set in the bed board through a connecting spring. The baffle is set on the extension plate. The protective plate is slidably set in the bed board and is located on the extension plate.

2. The rail transit vehicle maintenance and repair device according to claim 1, characterized in that: The walking trolley comprises a vehicle body and universal wheels. The number of the universal wheels is four and they are movably arranged around the vehicle body.

3. The rail transit vehicle maintenance and repair device according to claim 2, characterized in that: The height adjustment mechanism includes a support frame, a rotating plate and a movable block. The support frame is arranged on the vehicle body. The left and right sides of the support frame are rotatably connected to the rotating plates through rotating rods respectively. The movable block is rotatably arranged outside each rotating plate, and each movable block is slidably arranged under the moving seat.

4. The rail transit vehicle maintenance and repair device according to claim 3, characterized in that: One end of the rotating rods on the left and right sides of the supporting frame extending out of the supporting frame is connected to a driving part, and the driving part is arranged on the vehicle body.

5. The rail transit vehicle maintenance and repair device according to claim 4, characterized in that: The height adjustment mechanism further comprises a fixed block and a supporting block, wherein the fixed block is arranged on the vehicle body, the supporting block is arranged under the moving seat, and the supporting block is slidably arranged in the fixed block via a first spring.

6. The rail transit vehicle maintenance and repair device according to claim 1, characterized in that: The angle adjustment mechanism comprises a rotating part and a rotating block, wherein the rotating part is arranged on the rotating disk, and the rotating block is connected to the output shaft of the rotating part and is arranged under the bed board.

7. A rail transit vehicle maintenance and repair method, applied to the rail transit vehicle maintenance and repair device according to any one of claims 1 to 6, characterized in that: The following steps are involved: The universal wheel is rotated under the vehicle body to drive the vehicle body to move on the ground, and the vehicle body is moved to a designated position, and then the brake of the universal wheel is stepped on to stop the movement of the universal wheel, so as to fix the vehicle body; Allow the extension plate to slide transversely inside the bed board, driving the baffle plate to move transversely outside the bed board, allowing the maintenance personnel's head and body to lie inside the bed board, with their feet aligned with the baffle plate; Then, the height adjustment mechanism drives the movable seat to move up and down above the vehicle body, driving the bed board to move up and down above the vehicle body, thereby adjusting the height of the bed board; The azimuth adjustment mechanism drives the rotating disk to rotate in the rotating groove of the movable seat, driving the bed board to rotate horizontally above the vehicle body, thereby adjusting the azimuth of the bed board; The angle of the bed board is adjusted by driving the bed board to rotate vertically on the rotating disk through an angle adjustment mechanism; By adjusting the height, orientation and angle of the bed plate, the maintenance personnel are moved to the position to be maintained of the rail transit vehicle, and the bottom of the rail transit vehicle is maintained.

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