Large maintenance platform for urban rail transit

Abstract

The invention relates to the technical field of urban rail transit maintenance, in particular to a large maintenance platform for urban rail transit. The urban viaduct maintenance device comprises a frame component and a lifting component, the frame component is fixed to the ground and used for driving the lifting component to conduct lifting operation in the frame component. The lifting component is located in the frame component and used for transporting materials and vehicles needed by urban elevated maintenance. The problems that in the prior art, urban rail transit maintenance equipment is inconvenient to transport materials, inconvenient to mount and dismount and lack of an effective emergency protection mechanism are effectively solved, and meanwhile the problem that an urban rail transit maintenance equipment platform is insufficient in scale is solved.

Description

Technical Field

[0001] The present invention relates to the technical field of urban rail transit maintenance, and in particular to a large-scale maintenance platform for urban rail transit. Background Art

[0002] During the construction of urban rail transit, the maintenance of elevated roads is crucial. However, current existing technologies have many difficulties in this regard.

[0003] Currently, aerial ladders are often used to transport materials and labor for maintenance on elevated highways under construction. However, aerial ladders are extremely inconvenient in practice, with limited transport capacity, making them inadequate for transporting large quantities of materials and equipment. Furthermore, there is a high risk of maintenance personnel and materials falling when entering and exiting the ladders. A fall could injure passersby below, posing a serious threat to public safety.

[0004] Some existing rail transit maintenance platforms are relatively small. This makes it impossible to transport large equipment, such as maintenance vehicles, in practice, significantly limiting the full implementation and efficiency of maintenance work. Furthermore, these platforms are all welded during installation. While this ensures stability to a certain extent, it creates significant difficulties when the maintenance platforms need to be moved and disassembled. Due to the irreversible nature of welding, many components are easily damaged during disassembly, which not only increases maintenance costs but also prolongs equipment downtime, impacting the normal operation and maintenance schedule of rail transit. Furthermore, these maintenance platforms are fixed in height and cannot be adjusted according to maintenance needs.

[0005] Even more serious is that, if an emergency occurs during platform operation, existing platforms often lack effective emergency protection mechanisms and may fall directly to the ground. This can cause serious accidents, not only causing devastating damage to the platform equipment itself, but also very likely causing casualties to people below, resulting in huge losses and adverse effects on society.

[0006] In summary, the existing urban rail transit maintenance technology has obvious deficiencies in material transportation, platform scale, installation and disassembly, and emergency safety. A new and more complete large-scale maintenance platform for urban rail transit is urgently needed to solve these problems and ensure that maintenance work during the construction of urban rail transit can be carried out safely, efficiently, and stably. Summary of the Invention

[0007] To achieve the above-mentioned objectives, the present invention proposes a large-scale maintenance platform for urban rail transit, which effectively solves the problems in the existing technology of inconvenient material transportation, inconvenient installation and disassembly, and lack of effective emergency protection mechanism of urban rail transit maintenance equipment, and also solves the problem of insufficient scale of urban rail transit maintenance equipment platform.

[0008] To achieve the above-mentioned purpose, the present invention proposes the following technical solutions: A large-scale maintenance platform for urban rail transit, used for the maintenance of urban elevated roads, comprising a frame component and a lifting component; The frame component is fixed on the ground, and is used to drive the lifting component to perform lifting operations inside it; The lifting components are located inside the frame components and are used to transport materials and vehicles required for urban elevated maintenance.

[0009] Furthermore: the frame components include a base plate, an upper console, multiple connecting components and multiple fixing components, and the connecting components are arranged in an array on the left and right sides of the base plate; the two ends of the connecting components are respectively connected to the base plate and the upper console, and the connecting components are connected by multiple support frames. The base plate, the support frame and the upper console are all connected at the positions where they are connected. The fixing components are located on the outside of the support frame, and the fixing components are used to fix the support frame; a pair of winches are provided above the upper console.

[0010] Furthermore: the lifting components include a lifting platform, a frame rod and multiple track sliders. The lifting platform and the frame rod are fixed to each other through multiple support rods. The support rods correspond to the support frames respectively. The track sliders are fixed to the outer sides of the corresponding support rods respectively. The track sliders are slidably connected to the support frames. A slideway that matches the track slider is provided in the support frame; a braking mechanism that matches the track slider is provided in the support frame; a pair of lifting connecting blocks are provided on the frame rod, the lifting connecting blocks correspond to the winches respectively, and the lifting connecting blocks and the corresponding winches are connected by steel cables.

[0011] Furthermore: the connecting and fixing mechanism includes a base plate connecting block fixedly connected to the base plate, a fixed connecting block matching the base plate connecting block fixedly connected to the bottom of the connecting assembly, multiple control sleeves fixedly connected to one side of the base plate connecting block, the control sleeves are arranged in an array on the base plate connecting block, and a positioning slider is slidably connected in the control sleeves, and a control adjustment column matching the positioning slider is slidably connected in the control sleeves, a pair of fixed grooves are provided on the control adjustment column, and a limit block matching the fixed groove is provided in the positioning slider; a tension spring is connected to the outer shell of one end of the control adjustment column, the tension spring is located in the control sleeve, one end of the tension spring is fixed to the control sleeve, and the other end of the tension spring is fixed to the positioning slider, and a sliding groove matching the control adjustment column is provided in the base plate connecting block and the fixed connecting block, and a cross circular groove is provided on the other side of the base plate connecting block, and the other end of the control adjustment column is fixed with a positioning block matching the cross circular groove.

[0012] Furthermore: the outer contour of the positioning slider is a polygon, and the fixing slot is an L-shaped slot.

[0013] Furthermore: the braking mechanism includes a fixed stop block and a fixed control frame fixed in the support frame, the fixed control frame is rotatably connected with a rotation control block and a rotation positioning block, the rotation control block and the rotation positioning block have the same rotation axis, the rotation control block and the rotation positioning block are coaxially fixed with a coil spring, one side of the rotation positioning block is in contact with the fixed stop block, the rotation positioning block is provided with a rotation groove that matches the rotation control block, and the bottom of the rotation control block is in contact with the rotation positioning block; the track slider is provided with a brake groove that matches the brake mechanism, and a fixed connecting column is arrayed in the brake groove.

[0014] Furthermore: the first fixed link and the second fixed link of the fixing assembly are provided with matching slots at the center positions of the first fixed link and the second fixed link, and the two ends of the first fixed link and the second fixed link are respectively screwed to the corresponding support frames.

[0015] Furthermore: balls are provided on both sides of the slideway where the support frame cooperates with the track slider.

[0016] Furthermore: the lifting platform includes an upper plate, a lower plate and a plurality of quadrilateral connecting blocks, and the quadrilateral connecting blocks are respectively connected to the upper plate and the lower plate.

[0017] Furthermore: fixing components are provided on the left and right sides and the rear side of the frame component, and a fixing component is also provided in the middle position of the front side of the frame component; no fixing components are provided on the corresponding support frames at the top and bottom of the front side of the frame component.

[0018] Compared with the prior art, the present invention has the following gain effects: 1. The setting of the connection and fixing mechanism realizes the rapid splicing and disassembly of the frame parts, and the setting of the fixing components ensures the stability of the frame parts. Compared with the traditional welding method, when the maintenance platform needs to be transferred and disassembled, it can effectively reduce the damage to accessories, reduce maintenance costs, and shorten the downtime of equipment.

[0019] 2. The setting of the braking mechanism can brake the lifting components in time when encountering emergencies during the operation of the platform to prevent them from falling directly, thus ensuring the safety of equipment and personnel; at the same time, the design of ball bearings on both sides of the slideway to reduce friction and the truss structure to enhance the stability of the lifting components further improve the overall safety and reliability of the platform.

[0020] 3. The lifting components of the large maintenance platform of the present invention can transport materials and vehicles required for urban elevated maintenance, solving the problem that the existing platform is small in scale and cannot transport large equipment, and greatly improving the efficiency and comprehensiveness of maintenance work. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a three-dimensional diagram of the present invention.

[0022] Figure 2It is a partial enlarged view of the present invention.

[0023] Figure 3 It is a partial structural diagram of the present invention.

[0024] Figure 4 It is a partial three-dimensional diagram of the connection and fixing mechanism of the present invention.

[0025] Figure 5 This is a partial cutaway view of the connection and fixing mechanism of the present invention.

[0026] Figure 6 It is a three-dimensional diagram of the cross-shaped circular groove of the present invention.

[0027] Figure 7 This is a partial exploded view of the connection and fixing mechanism of the present invention.

[0028] Figure 8 It is a partial three-dimensional diagram of the braking mechanism of the present invention.

[0029] Figure 9 This is a diagram of the normal state of the brake mechanism of the present invention.

[0030] Figure 10 It is a partial cutaway view of the brake mechanism of the present invention.

[0031] Figure 11 This is a braking state diagram of the braking mechanism of the present invention.

[0032] Figure 12 It is a three-dimensional diagram of the lifting platform of the present invention.

[0033] Figure 13 This is an exploded view of the fixing assembly of the present invention.

[0034] In the figure: 1. base plate, 2. lifting platform, 3. frame rod, 4. base plate connecting block, 5. lifting connecting block, 6. support frame, 7. upper control console, 8. winch, 9. track slider, 10. first fixed link, 11. second fixed link, 12. fixed connecting block, 13. control sleeve, 14. control adjustment column, 15. positioning slider, 16. tension spring, 17. rotation control block, 18. rotation positioning block, 19. fixed stopper, 20. fixed control frame, 21. fixed connecting column, 22. cross-shaped circular groove. DETAILED DESCRIPTION

[0035] The technical solution of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the embodiments described are only some embodiments of the present invention, not all embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0036] Example 1: A large maintenance platform for urban rail transit, used for the maintenance of urban elevated roads, including a frame component and a lifting component; The frame component is fixed on the ground, and is used to drive the lifting component to perform lifting operations inside it; The lifting components are located inside the frame components and are used to transport materials and vehicles required for urban elevated maintenance.

[0037] The frame components include a base plate 1, an upper console 7, multiple connecting components and multiple fixing components. The connecting components are arranged in an array on the left and right sides of the base plate 1; the two ends of the connecting components are respectively connected to the base plate 1 and the upper console 7, and the connecting components are connected by multiple support frames 6. The base plate 1, the support frame 6 and the upper console 7 are connected at the positions where they are connected to each other. The fixing components are located on the outside of the support frame 6, and the fixing components are used to fix the support frame 6; a pair of winches 8 are provided above the upper console 7.

[0038] The lifting components include a lifting platform 2, a frame rod 3 and multiple track sliders 9. The lifting platform 2 and the frame rod 3 are fixed to each other through multiple support rods, which correspond to the support frames 6 respectively. The track sliders 9 are fixed to the outer sides of the corresponding support rods. The track sliders 9 are slidably connected to the support frames 6. A slideway that cooperates with the track sliders 9 is provided in the support frame 6; a braking mechanism that cooperates with the track sliders 9 is provided in the support frame 6; a pair of lifting connection blocks 5 are provided on the frame rod 3, which correspond to the winches 8 respectively, and the lifting connection blocks 5 and the corresponding winches 8 are connected by steel cables.

[0039] The first fixed link 10 and the second fixed link 11 of the fixing assembly are provided with matching slots at the center positions of the first fixed link 10 and the second fixed link 11, and the two ends of the first fixed link 10 and the second fixed link 11 are respectively screwed to the corresponding support frame 6.

[0040] Ball bearings are provided on both sides of the slideway where the support frame 6 and the track slider 9 cooperate.

[0041] The frame part is provided with fixing components on both sides and the rear side, and is also provided with a fixing component in the middle position of the front side of the frame part; no fixing components are provided on the corresponding support frames 6 at the top and bottom of the front side of the frame part.

[0042] like Figure 1 、 2, 3, 12 and 13: During the use of the large maintenance platform, the staff can first place the base plate 1 in a suitable position and fix the base plate 1 to the ground. After completing the above operations, the staff will place the lifting components on the base plate 1. The base plate 1 is larger in size among the lifting components and is a large platform that can transport materials and vehicles required for urban elevated maintenance; then the connecting component is matched with the corresponding track slider 9, and the connecting component is connected to the base plate 1. During the construction of the connecting component, the connecting component is fixed with the fixing component to ensure the stability of the frame component it has constructed. In addition, the upper control console 7 is placed above the connecting component and connected to the upper control console 7. Finally, the winch 8 on the upper control console 7 is connected to the lifting connecting block 5 on the frame rod 3 through a steel cable, so that the lifting component is driven to slide in the frame component under the action of the winch 8. At this time, when the equipment is working, the track slider 9 slides in the slideway of the connecting component. The lifting component of the large maintenance platform of the present invention can transport materials and vehicles required for urban elevated maintenance, which solves the problem that the existing platform is small in scale and cannot transport large equipment, and greatly improves the efficiency and comprehensiveness of maintenance work.

[0043] Example 2 The connection and fixing mechanism includes a base plate connecting block 4 fixed to the base plate 1, a fixed connecting block 12 that cooperates with the base plate connecting block 4 is fixed to the bottom of the connecting assembly, a plurality of control sleeves 13 are fixed to one side of the base plate connecting block 4, and the control sleeves 13 are arranged in an array on the base plate connecting block 4. A positioning slider 15 is slidably connected in the control sleeves 13, and a control adjustment column 14 that cooperates with the positioning slider 15 is slidably connected in the control sleeves 13. A pair of fixed grooves are provided on the control adjustment column 14, and the positioning slider 15 is arranged in an array. Both are provided with limit blocks that cooperate with the fixed grooves; a tension spring 16 is connected to the outer shell of one end of the control adjustment column 14, and the tension spring 16 is located in the control sleeve 13. One end of the tension spring 16 is fixedly connected to the control sleeve 13, and the other end of the tension spring 16 is fixedly connected to the positioning slider 15. The bottom plate connecting block 4 and the fixed connecting block 12 are both provided with sliding grooves that cooperate with the control adjustment column 14. A cross-shaped circular groove 22 is provided on the other side of the bottom plate connecting block 4, and the other end of the control adjustment column 14 is fixedly connected to a positioning block that cooperates with the cross-shaped circular groove 22.

[0044] The outer contour of the positioning slide block 15 is a polygon, and the fixing slot is an L-shaped slot.

[0045] like Figure 4 、 5, 6 and 7: Based on the first embodiment, when building the frame components, the various components can be connected by connecting and fixing mechanisms. After the base plate connecting block 4 on the base plate 1 is fixedly connected to the support frame 6; the amount of the support frame 6 in the connecting assembly can be adjusted according to the maintenance height; then the support frames 6 are connected to the support frames 6 through the connecting and fixing mechanisms, and finally the support frame 6 is connected to the upper console 7 through the connecting and fixing mechanisms; in the process of operating the fixed connection mechanism, the control adjustment column 14 in the control sleeve 13 can be first Pull it outward. At this time, under the action of the positioning slider 15 and the slide groove, the control adjustment column 14 slides horizontally. When the positioning block is pulled to the appropriate position, the fixed connecting block 12 under the support frame 6 can be connected to the U-shaped groove in the bottom plate connecting block 4, and then the positioning block is pushed to the outside of the bottom plate connecting block 4, and then the control adjustment column 14 is rotated 90°. During this process, the tension spring is stretched. At this time, let go. Under the tension of the tension spring reset, the positioning block cooperates with the cross-shaped circular groove 22, thereby fixing the support frame 6 and the bottom plate connecting block 4 together.

[0046] The setting of the connecting and fixing mechanism enables the rapid splicing and disassembly of the frame components, and the setting of the fixing components ensures the stability of the frame components. Compared with the traditional welding method, when the maintenance platform needs to be transferred and disassembled, it can effectively reduce damage to accessories, reduce maintenance costs, and shorten equipment downtime. At the same time, it also achieves the purpose of adjusting the height of the maintenance equipment according to different maintenance needs.

[0047] Example 3 The braking mechanism includes a fixed stopper 19 and a fixed control frame 20 fixed in the support frame 6. The fixed control frame 20 is rotatably connected with a rotation control block 17 and a rotation positioning block 18. The rotation control block 17 and the rotation positioning block 18 have the same rotation axis. The rotation control block 17 and the rotation positioning block 18 are coaxially fixed with a coil spring. One side of the rotation positioning block 18 is in contact with the fixed stopper 19. The rotation positioning block 18 is provided with a rotation groove that matches the rotation control block 17. The bottom of the rotation control block 17 is in contact with the rotation positioning block 18; a brake groove that matches the braking mechanism is provided on the track slider 9, and a fixed connecting column 21 is arrayed in the brake groove.

[0048] like Figure 8 、 9, 10 and 11: On the basis of embodiment one or two; the cooperation of the braking mechanism and the fixed connecting column 21 in the braking groove realizes the braking of the lifting component in the event of an emergency; when the lifting component rises normally, the track slider 9 slides in the slideway of the support frame 6, and the setting of the ball greatly reduces its friction. At this time, after the fixed connecting column 21 contacts the rotation control block 17, it will drive the rotation control block 17 to rotate counterclockwise in a small range, and then the two are separated. Under the action of the coil spring, the rotation control block 17 is reset. At this time, the rotation positioning block 18 will not move; when the lifting component descends normally, after the fixed connecting column 21 contacts the rotation control block 17, it will drive the rotation control block 17 to rotate clockwise; after the rotation control block 17 rotates downward to a certain extent, it will drive the rotation positioning block 18 to rotate clockwise. When the rotation control block 17 is separated from the fixed connecting column 21, the rotation control block 17 is reset under the action of the coil spring. At the same time, the rotation positioning block 18 is under the force of gravity and coil When the lifting part is in normal operation, the braking mechanism will not affect it. When an emergency occurs and the lifting part falls quickly, the fixed connecting column 21 contacts the rotating control block 17, which will drive the rotating control block 17 to rotate clockwise. After the rotating control block 17 rotates downward to a certain extent, it will drive the rotating positioning block 18 to rotate clockwise. When the fixed connecting column 21 separates from the rotating control block 17, because the lifting part falls at a fast speed, the rotating control block 17 and the rotating positioning block 18 are not reset, the rotating positioning block 18 will contact the next fixed connecting column 21. Under the action of the fixed stopper 19, the fixed stopper 19 resists the tail of the rotating positioning block 18. At this time, the rotating positioning block 18 is in a horizontal state. Since the lifting part falls at a low speed at this time, the emergency stop of the lifting part can be achieved when all the rotating positioning blocks 18 are braked. After the fault is repaired, the lifting part only needs to run normally upward for a distance to release the brake.

[0049] The braking mechanism can brake the lifting components in time when encountering emergencies during the operation of the platform to prevent them from falling directly, thus ensuring the safety of equipment and personnel; at the same time, the design of ball bearings on both sides of the slideway reduces friction, and the truss structure enhances the stability of the lifting components, further improving the overall safety and reliability of the platform.

[0050] Example 4 The lifting platform 2 includes an upper plate, a lower plate and a plurality of quadrilateral connecting blocks, and the quadrilateral connecting blocks are connected to the upper plate and the lower plate respectively.

[0051] like Figure 12 As shown: On the basis of embodiment 1, the upper plate, the lower plate and a plurality of quadrilateral connecting blocks form the lifting platform 2 into a truss structure; the design of enhancing the stability of the lifting components also further improves the overall safety and reliability of the platform.

[0052] In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate and simplify the description of the present invention. They are not intended to indicate or imply that the devices or components referred to must have, be constructed, or operate in a specific orientation, and therefore should not be construed as limitations on the present invention. Furthermore, the terms "first," "second," and "third" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0053] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection" and "connection" should be understood in a broad sense. For example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, or it can be internal communication between two components; for ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

Claims

1. A large-scale maintenance platform for urban rail transit, used for the maintenance of urban elevated roads, characterized by: Including frame components and lifting components; The frame component is fixed on the ground, and is used to drive the lifting component to perform lifting operations inside the frame component; The lifting component is located inside the frame component and is used to transport materials and vehicles required for urban elevated maintenance.

2. The large-scale maintenance platform for urban rail transit according to claim 1, characterized in that: The frame component comprises a base plate (1), an upper control console (7), a plurality of connecting components and a plurality of fixing components, wherein the connecting components are arranged in an array on the left and right sides of the base plate (1); the two ends of the connecting components are connected to the base plate (1) and the upper control console (7) respectively, and the connecting components are formed by connecting a plurality of support frames (6); the base plate (1), the support frame (6) and the upper control console (7) are all provided with a connecting fixing mechanism at the mutually connected positions, the fixing components are located outside the support frame (6), and the fixing components are used to fix the support frame (6); a pair of winches (8) are provided above the upper control console (7).

3. The large-scale maintenance platform for urban rail transit according to claim 2, characterized in that: The lifting component includes a lifting platform (2), a frame rod (3) and a plurality of track sliders (9). The lifting platform (2) and the frame rod (3) are fixed to each other through a plurality of support rods. The support rods correspond to the support frames (6) respectively. The track sliders (9) are fixed to the outer sides of the corresponding support rods respectively. The track sliders (9) are slidably connected to the support frames (6). A slideway matching the track sliders (9) is provided in the support frame (6); a braking mechanism matching the track sliders (9) is provided in the support frame (6); a pair of lifting connection blocks (5) are provided on the frame rod (3). The lifting connection blocks (5) correspond to the winches (8) respectively. The lifting connection blocks (5) and the corresponding winches (8) are connected through steel cables.

4. The large-scale maintenance platform for urban rail transit according to claim 2, characterized in that: The connection fixing mechanism includes a bottom plate connection block (4) fixed on the bottom plate (1), a fixed connection block (12) matched with the bottom plate connection block (4) fixedly connected below the connection assembly, a plurality of control sleeves (13) fixedly connected to one side of the bottom plate connection block (4), the control sleeves (13) are arranged in an array on the bottom plate connection block (4), and a positioning slider (15) is slidably connected in each of the control sleeves (13), and a control adjustment column (14) matched with the positioning slider (15) is slidably connected in each of the control sleeves (13), and a pair of fixing grooves are provided on the control adjustment column (14), and the positioning slider (15) is provided in the control adjustment column (14). A limit block that matches the fixed groove is provided; a tension spring (16) is connected to the outer sleeve of one end of the control adjustment column (14), the tension spring (16) is located in the control sleeve (13), one end of the tension spring (16) is fixed to the control sleeve (13), and the other end of the tension spring (16) is fixed to the positioning slide block (15); a sliding groove that matches the control adjustment column (14) is provided in the bottom plate connection block (4) and the fixed connection block (12); a cross-shaped circular groove (22) is provided on the other side of the bottom plate connection block (4), and a positioning block that matches the cross-shaped circular groove (22) is fixed to the other end of the control adjustment column (14).

5. The large-scale maintenance platform for urban rail transit according to claim 4, characterized in that: The outer contour of the positioning slide block (15) is a polygon, and the fixing slot is an L-shaped slot.

6. The large-scale maintenance platform for urban rail transit according to claim 3, characterized in that: The braking mechanism comprises a fixed stopper (19) and a fixed control frame (20) fixed in the support frame (6); a rotation control block (17) and a rotation positioning block (18) are rotatably connected to the fixed control frame (20); the rotation control block (17) and the rotation positioning block (18) have the same rotation axis; the rotation control block (17) and the rotation positioning block (18) are both coaxially fixed with a coil spring; one side of the rotation positioning block (18) contacts the fixed stopper (19); the rotation positioning block (18) is provided with a rotation groove matched with the rotation control block (17); the bottom of the rotation control block (17) contacts the rotation positioning block (18); a brake groove matched with the braking mechanism is provided on the track slider (9); a fixed connecting column (21) is arrayed in the brake groove.

7. The large-scale maintenance platform for urban rail transit according to claim 2, characterized in that: The fixing assembly comprises a first fixing link (10) and a second fixing link (11), wherein the center positions of the first fixing link (10) and the second fixing link (11) are provided with matching slots, and both ends of the first fixing link (10) and the second fixing link (11) are respectively screwed to corresponding support frames (6).

8. The large-scale maintenance platform for urban rail transit according to claim 3, characterized in that: Ball bearings are provided on both sides of the slideway where the support frame (6) and the track slider (9) cooperate.

9. The large-scale maintenance platform for urban rail transit according to claim 1, characterized in that: The lifting platform (2) comprises an upper plate, a lower plate and a plurality of quadrilateral connecting blocks, wherein the quadrilateral connecting blocks are respectively connected to the upper plate and the lower plate.

10. The large-scale maintenance platform for urban rail transit according to claim 2, characterized in that: The left and right sides and the rear side of the frame part are both provided with fixing components, and the middle position of the front side of the frame part is also provided with a fixing component; the corresponding support frames (6) at the top and bottom of the front side of the frame part are not provided with fixing components.

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