Grabbing structure and subway platform screen door mounting vehicle

Abstract

The utility model relates to the technical field of metro platform screen door installation, and discloses a grabbing structure and a metro platform screen door installation vehicle. The grabbing structure comprises a sliding frame, a telescopic rod horizontally arranged on the sliding frame and a grabbing metal plate arranged at the output end of the telescopic rod, the grabbing metal plate comprises a back plate and a long-strip-shaped profile vertically arranged on the back plate, a hollow clamping cavity is formed between the long-strip-shaped profile and the back plate, an upper clamping opening and a lower clamping opening are formed in the clamping face of the long-strip-shaped profile, and the upper clamping opening is communicated with the lower clamping opening. The novel grabbing mode that the grabbing metal plate is matched with the embedded pins on the metro platform screen door is ingeniously utilized, the installation steps are simplified, the working efficiency is improved, and the stability and safety of the metro platform screen door in the carrying process are guaranteed.

Description

Technical Field

[0001] The utility model relates to the technical field of subway platform screen door installation, and particularly relates to a grasping structure and a subway platform screen door installation vehicle. Background Art

[0002] The subway platform screen door is the first barrier for the safe operation of the subway. Through the platform screen door, the randomness and non-directionality of personnel flow can be effectively reduced, the potential safety hazards between the subway operation vehicle and the platform can be reduced, and it plays a crucial role in the safe and stable operation of the subway.

[0003] In order to shorten the on-site construction period, a patent discloses a subway platform screen door installation device for installing modular subway platform screen doors; however, this subway platform screen door installation device controls two grasping arms to approach each other to grasp the subway platform screen door through a first transverse movement driving mechanism. However, the structure of the first transverse movement driving mechanism not only occupies a very large space, but also needs to bear the weight of the lifting driving mechanism, the second transverse movement driving mechanism and the grasping arms in addition to the weight of the subway platform screen door during handling, resulting in high energy consumption. In addition, in order to improve the stability of handling, the grasping arm needs to specifically open a limiting groove on the side of the subway platform screen door to cooperate with the grasping hook of the grasping arm to grasp the subway platform screen door. This grasping method not only makes the structure of the grasping arm huge, but also requires specifically opening an additional limiting groove, which is time-consuming and laborious.

[0004] It can be seen that the prior art still needs to be improved. Summary of the Utility Model

[0005] In view of the deficiencies of the above prior art, the purpose of the present utility model is to provide a grasping structure and a subway platform screen door installation vehicle, aiming to adopt a new grasping method and use the grasping sheet metal to cooperate with the embedded pin on the subway platform screen door to grasp the subway platform screen door.

[0006] In order to achieve the above purpose, the present utility model adopts the following technical solutions:

[0007] A grasping structure includes a sliding frame, a telescopic rod horizontally arranged on the sliding frame, and a grasping sheet metal arranged at the output end of the telescopic rod. The grasping sheet metal includes a back plate and a long strip profile vertically arranged on the back plate. A hollow clamping cavity is formed between the long strip profile and the back plate. An upper clamping opening and a lower clamping opening are formed on the clamping surface of the long strip profile, and the embedded pins on the side of the subway platform screen door can be correspondingly clamped into the upper clamping opening and the lower clamping opening.

[0008] As a further improvement of the above technical solution, the upper clamping opening includes a round hole and a first waist hole vertically extending at the top of the round hole.

[0009] As a further improvement of the above technical solution, the lower clamping port includes an inverted trapezoidal guiding inlet opened upward from the bottom edge of the clamping surface of the long strip profile and a second waist-shaped hole vertically extending and arranged at the top of the inverted trapezoidal guiding inlet.

[0010] As a further improvement of the above technical solution, a turntable is sleeved on the output end of the telescopic rod, and the two are rotatably connected through a bearing, and the turntable is fixedly connected to the back plate.

[0011] As a further improvement of the above technical solution, the telescopic rod is one of a hydraulic rod, an electric telescopic rod, and a cylinder.

[0012] There is also provided a subway platform screen door installation vehicle, including a rail vehicle body, at least two handling modules arranged on the rail vehicle body, and a transfer rack between the two handling modules. The transfer rack is provided with a plurality of storage positions for vertically placing the subway platform screen doors. At least two of the handling modules are used to jointly move the vertically placed subway platform screen doors to the installation position on the subway platform. The handling module includes a bottom plate, a lifting drive mechanism arranged on the bottom plate, a first forward movement drive mechanism connected to the output end of the lifting drive mechanism, a second forward movement drive mechanism driven by the first forward movement drive mechanism to move forward and backward, and a grasping structure as described above. The second forward movement drive mechanism drives the grasping structure to move forward and backward.

[0013] As a further improvement of the above technical solution, the lifting drive mechanism includes at least one screw jack. Each screw jack is arranged on the bottom plate through a raised support, and the output end of the screw jack is connected to the first forward movement drive mechanism.

[0014] As a further improvement of the above technical solution, the lifting drive mechanism further includes two guiding cylinders and two guiding rods respectively cooperating with the corresponding guiding cylinders. The top ends of the guiding rods are connected to the first forward movement drive mechanism.

[0015] As a further improvement of the above technical solution, the first forward movement drive mechanism includes a first square tube extending in the front-rear direction, a first guide rail arranged on the upper surface of the first square tube and extending in the front-rear direction, and a first driving motor vertically arranged upward on the first square tube; the second forward movement drive mechanism includes a second square tube extending in the front-rear direction, a first rack arranged on the bottom surface of the second square tube and extending in the front-rear direction, a second guide rail and a second rack arranged on the upper surface of the second square tube and extending in the front-rear direction. The bottom surface of the second square tube is slidably connected to the first guide rail through a first slider. A first gear meshing and driving with the first rack is arranged on the output end of the first driving motor. The bottom surface of the carriage of the grasping structure is slidably connected to the second guide rail through a second slider, and a second driving motor vertically downward is arranged on the carriage. A second gear meshing and driving with the second rack is arranged on the output end of the second driving motor.

[0016] Advantages of the present utility model: Compared with the prior art, the grasping structure provided by the present utility model has both left and right telescopic movement and grasping functions at the same time. The structure is compact and occupies less floor space. It ingeniously uses a new grasping method in which the grasping sheet metal cooperates with the embedded pins on the subway screen door, simplifies the installation steps, improves work efficiency, and also ensures the stability and safety of the subway screen door during the handling process. The subway screen door installation vehicle has all the advantages of the grasping structure. By utilizing the linkage effect among the lifting drive mechanism, the first-stage forward drive mechanism, and the second-stage forward drive mechanism in the two moving modules and jointly acting on the corresponding grasping structure, the grasping structure can grasp the subway screen door on the transfer rack and move the subway screen door to the installation position on the subway platform, and can achieve precise positioning of the subway screen door at the installation position. Description of the Drawings

[0017] Figure 1 is a three-dimensional view of the grasping structure provided by the present utility model Figure 1 .

[0018] Figure 2 is a three-dimensional view of the grasping structure provided by the present utility model Figure 2 .

[0019] Figure 3 is a schematic diagram of the cooperation between the embedded pin and the upper clamping port on the grasping sheet metal.

[0020] Figure 4 is a three-dimensional view of the handling module provided by the present utility model.

[0021] Figure 5 is a schematic diagram of the subway screen door installation vehicle grasping the subway screen door to be installed.

[0022] Figure 6 is a schematic diagram of installing the subway screen door on the subway platform.

[0023] Description of main component symbols: 1 - grasping structure, 11 - carriage, 12 - telescopic rod, 13 - grasping sheet metal, 131 - back plate, 132 - long profile, 133 - hollow clamping cavity, 134 - upper clamping port, 1341 - round hole, 1342 - first waist-shaped hole, 135 - lower clamping port, 1351 - eight-shaped guiding inlet, 1352 - second waist-shaped hole, 14 - bearing, 15 - turntable, 2 - rail vehicle body, 3 - handling module, 31 - bottom plate, 32 - lifting drive mechanism, 321 - screw jack, 322 - elevation support, 323 - guiding cylinder, 324 - guiding rod, 33 - first-stage forward movement drive mechanism, 331 - first square tube, 332 - first guide rail, 333 - first slider, 34 - second-stage forward movement drive mechanism, 341 - second square tube, 342 - second guide rail, 343 - second rack, 344 - second slider, 345 - second drive motor, 4 - transfer rack, 5 - subway platform screen door, 51 - embedded pin, 6 - subway platform, 71 - T-shaped support, 72 - pulley, 73 - slide rail. Detailed implementation manners

[0024] The present utility model provides a grasping structure and a subway platform screen door installation vehicle. To make the objectives, technical solutions and effects of the present utility model clearer and more definite, the following further details the present utility model with reference to the accompanying drawings and by way of examples. It should be understood that the specific examples described herein are only used to explain the present utility model and are not used to limit the protection scope of the present utility model.

[0025] The subway platform screen door 5 mentioned in the present utility model has been pre-modularly assembled. The subway platform screen door 5 at least includes a pair of sliding doors and a fixed door or emergency door located on both sides of the pair of sliding doors. Embedded pins are provided on both sides of the subway platform screen door 5, and the embedded pins on each side are arranged at intervals up and down. These embedded pins 51 can not only assist in grasping and handling the subway platform screen door 5, but also play a key role in fixing the subway platform screen door 5 at the installation position on the subway platform 6 subsequently.

[0026] Please refer to Figure 1 , the present utility model provides a grasping structure 1, including a carriage 11, a telescopic rod 12 horizontally arranged on the carriage 11, and a grasping sheet metal 13 arranged at the output end of the telescopic rod 12. The grasping sheet metal 13 includes a back plate 131 and a long profile 132 vertically arranged on the back plate 131. A hollow clamping cavity 133 is formed between the long profile 132 and the back plate 131. An upper clamping port 134 and a lower clamping port 135 are formed on the clamping surface of the long profile 132. The embedded pins 51 on the side surface of the subway platform screen door 5 can be correspondingly clamped into the upper clamping port 134 and the lower clamping port 135.

[0027] During operation, the control carriage 11 moves to the side of the subway screen door 5 to be installed. The embedded pin 51 on the subway screen door 5 aligns with the upper and lower locking openings 134 and 135. The telescopic rod 12 then extends, driving the gripping sheet metal 13 to gradually approach the side of the subway screen door 5, so that the embedded pin 51 passes through the upper and lower locking openings 134 and 135 and enters the hollow locking cavity 133. The gripping structure 1 is lifted by the lifting drive mechanism 32 and begins to be transported. The embedded pin 51 then snaps into the upper and lower locking openings 134 and 135, allowing the subway screen door 5 to be smoothly gripped. The gripping structure 1 supports the weight of the subway screen door 5, ensuring its stability during transportation. When the subway screen door 5 is transported to the installation location on the subway platform 6, the weight of the subway screen door 5 is supported by the subway platform 6, and the gripping sheet metal 13 is now disengaged from the embedded pin 51 and reset.

[0028] Compared with the prior art, the grabbing structure 1 provided by the present invention has both left and right telescopic movement and grabbing functions, has a compact structure, occupies a small area, and cleverly utilizes a new grabbing method that cooperates with the grabbing sheet metal 13 and the embedded pins 51 on the subway screen door 5, which simplifies the installation steps, improves work efficiency, and ensures the stability and safety of the subway screen door 5 during transportation.

[0029] Specifically, the upper engaging opening 134 includes a circular hole 1341 and a first waist hole 1342 extending vertically at the top of the circular hole 1341. The circular hole 1341 and the first waist hole 1342 are overlapped, and the diameter of the circular hole 1341 is larger than the diameter of the first waist hole 1342. The embedded pin 51 first enters the grasping sheet metal 13 through the circular hole 1341. As the grasping structure 1 rises, the embedded pin 51 is naturally guided into the first waist hole 1342. This design enables the embedded pin 51 to be automatically aligned, reducing the time and labor intensity of alignment. The first waist hole 1342 positions the embedded pin 51, limiting the displacement and separation of the embedded pin 51 from the grasping sheet metal 13 due to vibration or collision during transportation, thereby enhancing stability during transportation.

[0030] Further, the lower clamping opening 135 includes an inverted trapezoidal guiding inlet 1351 opened upward from the bottom edge of the clamping surface of the long strip profile 132 and a second waist-shaped hole 1352 vertically extending and provided at the top of the inverted trapezoidal guiding inlet 1351, and the inverted trapezoidal guiding inlet 1351 and the second waist-shaped hole 135 are overlapped. The inverted trapezoidal guiding inlet 1351 provides a larger entry angle, which can easily guide the embedded pin 51 into the second waist-shaped hole 1352 even without being completely aligned, reducing the possibility of jamming. When the grasping structure 1 rises, the embedded pin 51 will naturally slide into the second waist-shaped hole 1352 under the action of gravity and guidance. The vertical extension design of the second waist-shaped hole 1352 can more accurately position the embedded pin 51, restricting the displacement and detachment of the embedded pin 51 from the grasping sheet metal 13 due to vibration or collision during the handling process, thereby enhancing the stability during the handling process.

[0031] It can be understood that the two embedded pins 51 on one side of the subway platform screen door 5 cooperate with the upper clamping opening 134 and the lower clamping opening 135 on the grasping sheet metal 13 respectively to achieve grasping, providing a dual locking mechanism to ensure the vertical state of the subway platform screen door 5, ensuring that the subway platform screen door 5 is more stable during the handling process and reducing the risk of offset or detachment caused by uneven single-point force.

[0032] In this embodiment, a turntable 15 is sleeved on the output end of the telescopic rod 12 and the two are rotationally connected through a bearing 14, and the turntable 15 is fixedly connected to the back plate 131. When the platform screen door is grasped, if the platform screen door tilts due to uneven center of gravity distribution, the bearing 14 can allow the grasping sheet metal 13 to rotate adaptively, which enables the grasping structure 1 to adapt to the change of the center of gravity of the platform screen door, thereby maintaining the overall balance. In addition, when the subway platform screen door 5 tilts, the turntable 15 will rotate together with the grasping sheet metal 13, avoiding the distortion or damage of the telescopic rod 12 and other components due to uneven force, and prolonging the service life of the equipment.

[0033] Preferably, the telescopic rod 12 is one of a hydraulic rod, an electric telescopic rod 12, and a cylinder. In this embodiment, the electric telescopic rod 12 is adopted, and the power supply control is convenient. The electric telescopic rod 12 can specifically adopt a horizontal electric screw lifter. The electric telescopic rod 12 can accurately control the telescopic speed and position through a motor, facilitating the realization of automatic control and improving the operation accuracy. Especially in the case where the position needs to be adjusted frequently, the position of the grasping sheet metal 13 can be adjusted more flexibly.

[0034] The long strip profile 132 can specifically be selected from channel steel or steel pipe.

[0035] The present utility model further provides a subway platform screen door installation vehicle, which includes a rail vehicle body 2, at least two handling modules 3 arranged on the rail vehicle body 2, and a transfer rack 4 between the two handling modules 3. The transfer rack 4 is provided with a plurality of storage positions for vertically placing the subway platform screen doors 5. At least two of the handling modules 3 are used to jointly move the subway platform screen door 5 placed in a vertical state to the installation position on the subway platform 6. The handling module 3 includes a bottom plate 31, a lifting drive mechanism 32 arranged on the bottom plate 31, a first-stage forward drive mechanism 33 connected to the output end of the lifting drive mechanism 32, a second-stage forward drive mechanism 34 driven by the first-stage forward drive mechanism 33 to move back and forth, and the grasping structure 1 in any of the above embodiments. The second-stage forward drive mechanism 34 drives the grasping structure 1 to move back and forth. A control system is arranged on the rail vehicle body 2 to control the automatic operation of the rail vehicle body 2, the lifting drive mechanism 32, the first-stage forward drive mechanism 33, and the second-stage forward drive mechanism 34.

[0036] During operation, the second-stage forward drive mechanism 34 drives the grasping structure 1 to move to the side of the subway platform screen door 5 to be transported. The embedded pin 51 on the subway platform screen door 5 is aligned with the upper clamping port 134 and the lower clamping port 135. Then, the rod body of the telescopic rod 12 extends to drive the grasping sheet metal 13 to gradually approach the side of the subway platform screen door 5, so that the embedded pin 51 passes through the upper clamping port 134 and the lower clamping port 135 and enters the hollow clamping cavity 133. Then, the lifting drive mechanism 32 lifts the first-stage forward drive mechanism 33, the second-stage forward drive mechanism 34, and the grasping structure 1 to start handling. The embedded pin 51 is firmly clamped into the upper clamping port 134 and the lower clamping port 135 to successfully grasp the subway platform screen door 5. Then, the first-stage forward drive mechanism 33 drives the second-stage forward drive mechanism 34, the grasping structure 1, and the subway platform screen door 5 to move forward a set distance. The second-stage forward drive mechanism 34 then drives the grasping structure 1 and the subway platform screen door 5 to move forward a second time to the upper part of the installation position on the subway platform 6. The lifting drive mechanism 32 then drives the subway platform screen door 5 to descend to the installation position. Finally, the staff fixes the subway platform screen door 5 located at the installation position. After that, the grasping arm is reset to be close to the un-installed subway platform screen door 5. The rail vehicle body 2 moves along the rail to the next installation point of the un-installed subway platform screen door 5, and then repeats the above transportation steps.

[0037] The rail vehicle body 2 of the subway platform screen door installation vehicle is used to cooperate with the subway track and can move on the subway track under the action of an external force (such as a tractor). In this way, it is convenient for the continuous installation of the subway platform screen door 5. At the same time, since the handling and installation of the subway platform screen door 5 are realized on the side of the subway track, it is possible to avoid occupying the position on the side of the subway platform 6 and is not affected by the construction environment of the subway platform 6 (such as the subway platform 6 is laying the floor or ceiling). The handling and installation of the subway platform screen door 5 are more efficient, which is conducive to shortening the construction period of the subway platform 6.

[0038] Multiple assembled modular subway platform screen doors 5 are lifted to the storage positions of the transfer rack 4 of the transfer rack 4 by means of hoisting. More than 3 storage positions are provided, and multiple subway platform screen doors 5 can be stored at one time to achieve continuous operation.

[0039] By utilizing the linkage effect among the lifting drive mechanism 32, the first-stage forward movement drive mechanism 33, and the second-stage forward movement drive mechanism 34 in the two handling modules 3 and jointly acting on the corresponding grasping structure 1, the grasping structure 1 can grasp the subway platform screen door 5 on the transfer rack 4 and move the subway platform screen door 5 to the installation position on the subway platform 6, and accurate positioning of the subway platform screen door 5 at the installation position can be achieved.

[0040] Specifically, the lifting drive mechanism 32 includes at least one screw jack 321. Each screw jack 321 is arranged on the bottom plate 31 through a heightening support 322, and the output end of the screw jack 321 is connected to the first-stage forward movement drive mechanism 33. The screw jack 321 has good positioning accuracy, can accurately control the lifting height of the grasping structure 1, and ensure the position accuracy of the subway platform screen door 5 during handling and installation. The screw jack 321 has a high load-bearing capacity, can bear the weight of the subway platform screen door 5, and ensure stability during lifting.

[0041] Furthermore, the lifting drive mechanism 32 further includes two guide cylinders 323 and two guide rods 324 respectively cooperating with the corresponding guide cylinders 323. The top ends of the guide rods 324 are connected to the first-stage forward movement drive mechanism 33. The combined use of the guide cylinders 323 and the guide rods 324 can ensure that the grasping structure 1 moves in a straight line during lifting, prevent shaking or deviation caused by lateral forces, and improve the stability of the system.

[0042] In this embodiment, the first-stage forward movement drive mechanism 33 includes a first square tube 331 extending in the front-rear direction, a first guide rail 332 arranged on the upper surface of the first square tube 331 and extending in the front-rear direction, and a first drive motor arranged vertically upward on the first square tube 331; the second-stage forward movement drive mechanism 34 includes a second square tube 341 extending in the front-rear direction, a first rack arranged on the bottom surface of the second square tube 341 and extending in the front-rear direction, a second guide rail 342 and a second rack 343 arranged on the upper surface of the second square tube 341 and extending in the front-rear direction. The bottom surface of the second square tube 341 is slidably connected to the first guide rail 332 through a first slider 333. A first gear meshing and driving with the first rack is arranged on the output end of the first drive motor. The bottom surface of the carriage 11 of the grasping structure 1 is slidably connected to the second guide rail 342 through a second slider 344, and a second drive motor 345 is arranged vertically downward on the carriage 11. A second gear meshing and driving with the second rack 343 is arranged on the output end of the second drive motor 345.

[0043] Both the first-stage forward movement drive mechanism 33 and the second-stage forward movement drive mechanism 34 adopt a rack and pinion drive, which can achieve precise forward and backward movement control, ensuring the precise positioning of the grasping structure 1 during the handling process. The first-stage forward movement drive mechanism 33 is slidably connected to the first guide rail 332 through the first slider 333, and the second-stage forward movement drive mechanism 34 is slidably connected to the second guide rail 342 through the second slider 344, ensuring the smoothness and stability of the grasping structure 1 during the forward and backward movement process.

[0044] Furthermore, a T-shaped support 71 is provided on the end face of the second square pipe 341 facing the transfer rack 4. Pulley 72 is provided on both the front and rear sides of the T-shaped support 71. A vertically extending slide rail 73 is suspended on the frame of the transfer rack 4. The pulley 72 is slidably connected to the inner side surface of the slide rail 73. By setting like this, when the first-stage forward movement drive mechanism 33 and the second-stage forward movement drive mechanism 34 are lifted or lowered, the pulley 72 slides along the inner side surface of the slide rail 73 to achieve lifting guidance, which can ensure the parallelism of the first-stage forward movement drive mechanism 33 and the second-stage forward movement drive mechanism 34, and prevent shaking when handling the subway screen door 5.

[0045] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. are based on the orientation or positional relationship shown in the drawings, and are 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 should not be construed as a limitation to the present invention.

[0046] In the description of the present invention, it should be noted that unless otherwise clearly specified and defined, the terms "installed", "connected", "connected" 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, an electrical connection or can communicate with each other; it can be a direct connection, or indirectly connected through an intermediate medium, and can be the internal communication of two elements or the interaction relationship between two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0047] It can be understood that for those of ordinary skill in the art, equivalent substitutions or changes can be made according to the technical solutions of the present invention and its inventive concept, and all such changes or substitutions should fall within the protection scope of the present invention.

Claims

1. A grasping structure, characterized in that, It includes a carriage, a telescopic rod horizontally arranged on the carriage, and a sheet metal gripper arranged at the output end of the telescopic rod. The sheet metal gripper includes a back plate and a long strip profile vertically arranged on the back plate. A hollow clamping cavity is formed between the long strip profile and the back plate. An upper clamping opening and a lower clamping opening are formed on the clamping surface of the long strip profile, and the embedded pins on the side of the subway screen door can be correspondingly clamped into the upper clamping opening and the lower clamping opening.

2. The grasping structure according to claim 1, wherein The upper clamping opening includes a round hole and a first waist hole vertically extending at the top of the round hole.

3. The grasping structure according to claim 2, wherein The lower clamping opening includes an eight-shaped guiding inlet opened upward from the bottom edge of the clamping surface of the long strip profile and a second waist hole vertically extending at the top of the eight-shaped guiding inlet.

4. The grasping structure according to claim 1, wherein, A turntable is sleeved on the output end of the telescopic rod and the two are rotationally connected through a bearing, and the turntable is fixedly connected with the back plate.

5. The grasping structure according to claim 1, wherein The telescopic rod is one of a hydraulic rod, an electric telescopic rod, and a cylinder.

6. Subway platform screen door installation vehicle, characterized in that, It includes a rail vehicle body, at least two handling modules arranged on the rail vehicle body, and a transfer rack between the two handling modules. A plurality of storage positions for vertically placing the subway screen door are arranged on the transfer rack. At least two of the handling modules are used to jointly move the subway screen door placed in a vertical state to the installation position on the subway platform. The handling module includes a bottom plate, a lifting drive mechanism arranged on the bottom plate, a first forward movement drive mechanism connected to the output end of the lifting drive mechanism, a second forward movement drive mechanism driven by the first forward movement drive mechanism to move forward and backward, and a gripping structure according to any one of claims 1-5. The second forward movement drive mechanism drives the gripping structure to move forward and backward.

7. The subway platform screen door installation vehicle according to claim 6, wherein, The lifting drive mechanism includes at least one screw jack. Each screw jack is arranged on the bottom plate through a raised support, and the output end of the screw jack is connected to the first forward movement drive mechanism.

8. The subway platform screen door installation vehicle according to claim 7, characterized in that, The lifting drive mechanism further includes two guiding cylinders and two guiding rods respectively cooperating with the corresponding guiding cylinders. The top ends of the guiding rods are connected to the first forward movement drive mechanism.

9. The subway platform screen door installation vehicle according to claim 6, characterized in that The first forward movement drive mechanism includes a first square tube extending forward and backward, a first guide rail arranged on the upper surface of the first square tube and extending forward and backward, and a first driving motor vertically arranged upward on the first square tube; the second forward movement drive mechanism includes a second square tube extending forward and backward, a first rack arranged on the bottom surface of the second square tube and extending forward and backward, a second guide rail and a second rack arranged on the upper surface of the second square tube and extending forward and backward. The bottom surface of the second square tube is slidably connected to the first guide rail through a first slider. A first gear meshing and driving with the first rack is arranged on the output end of the first driving motor. The bottom surface of the carriage of the gripping structure is slidably connected to the second guide rail through a second slider, and a second driving motor vertically downward is arranged on the carriage. A second gear meshing and driving with the second rack is arranged on the output end of the second driving motor.

10. The subway platform screen door installation vehicle according to claim 9, wherein, T-shaped supports are arranged on the end surface of the second square tube facing the transfer rack. Pulleys are arranged on the front and rear sides of the T-shaped supports. Vertically extending slide rails are suspended and arranged on the frame of the transfer rack. The pulleys are slidably connected to the inner side surface of the slide rails.

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