A lifting platform system for repairing trenches in rail transit depots

Abstract

The present invention relates to the technical field of railway auxiliary inspection equipment, and provides a lifting platform system for a maintenance trench of a rail transit vehicle depot, wherein the rail transit vehicle depot includes a maintenance platform, and a maintenance trench is defined between the maintenance platforms. The lifting platform system is arranged on the maintenance platform, and is characterized in that the lifting platform system includes: a maintenance platform, which is arranged in the maintenance trench and provides a maintenance platform for staff, and a plurality of connecting holes are opened on the maintenance platform; a telescopic mechanism, the telescopic end of the telescopic mechanism is detachably connected to the connecting hole and is used to adjust the height position of the maintenance platform; a detection and fixing mechanism, the detection and fixing mechanism is arranged on the maintenance platform, and the side of the telescopic mechanism away from the telescopic end is fixed on the detection and fixing mechanism, and the detection and fixing mechanism is used to detect the position of the maintenance platform and to perform telescopic positioning of the telescopic mechanism; a moving mechanism, the moving mechanism is arranged at the bottom of the maintenance platform and is used to drive the maintenance platform to move in the maintenance trench.

Description

Technical Field

[0001] The present invention relates to the technical field of railway auxiliary inspection equipment, and in particular to a lifting platform system for inspecting trenches in rail transit vehicle depots. Background Art

[0002] Railway transportation has become a vital component of my country's transportation system. With a large fleet and high operating mileage, the maintenance of railway vehicles is particularly crucial. Routine maintenance of existing railway vehicles primarily relies on the depots of various railway operating units. Most depots are equipped with inspection trenches to facilitate technical inspections of rolling stock running gear, undercarriage equipment, and other equipment.

[0003] However, due to the varying heights of the running gear and undercarriage equipment on railway vehicles, the varying heights of maintenance personnel, and the varying heights of the equipment being inspected, maintenance personnel are forced to repeatedly perform inspections by standing and squatting. This creates blind spots for inspecting high-altitude equipment, resulting in poor operator comfort and low maintenance efficiency. Meeting the height requirements for inspecting different parts of the trench during maintenance has become a pressing issue. Summary of the Invention

[0004] The purpose of the present invention is to provide a lifting platform system for maintenance trenches in rail transit vehicle depots, so as to improve the comfort of maintenance personnel when conducting technical inspections of railway vehicle running gear, undercarriage equipment, etc., and to solve the technical problem of low maintenance efficiency.

[0005] The purpose of the present invention is achieved through the following technical solutions:

[0006] A lifting platform system for a maintenance trench in a rail transit vehicle depot, the rail transit vehicle depot comprising maintenance platforms, a maintenance trench being defined between the maintenance platforms, the lifting platform system being disposed on the maintenance platforms, and the lifting platform system comprising:

[0007] A maintenance platform is provided in the maintenance trench to provide a maintenance platform for the staff, and a plurality of connection holes are provided on the maintenance platform;

[0008] a telescopic mechanism, wherein the telescopic end of the telescopic mechanism is detachably connected to the connecting hole and is used to adjust the height position of the maintenance platform;

[0009] A detection and fixing mechanism, the detection and fixing mechanism is provided on the maintenance platform, the side of the telescopic mechanism facing away from the telescopic end is fixed to the detection and fixing mechanism, the detection and fixing mechanism is used to detect the position of the maintenance platform and to perform telescopic positioning of the telescopic mechanism;

[0010] A moving mechanism is provided at the bottom of the maintenance platform and is used for driving the maintenance platform to move in the maintenance trench.

[0011] In some possible embodiments, the detection and fixing mechanism includes:

[0012] A fixing seat, the fixing seat being arranged on the maintenance platform and extending above the maintenance trench;

[0013] A position-limiting telescopic device, wherein the position-limiting telescopic device is arranged inside the fixing seat, and the telescopic end of the position-limiting telescopic device can extend to the outside of the fixing seat and be connected to the telescopic mechanism in a limiting manner to limit the telescopic mechanism in the height direction;

[0014] Two infrared detection devices are arranged at the bottom of the fixing seat and located in the maintenance trench. The two infrared detection devices are arranged relatively to each other along the moving direction of the maintenance platform. The telescopic mechanism is located between the two infrared detection devices. The infrared detection device emits infrared rays toward the maintenance platform to detect the position between the connecting hole and the telescopic mechanism.

[0015] In some possible embodiments, the fixing seat includes an extension portion and a main body portion, the extension portion is connected to the main body portion and extends above the maintenance trench, the main body portion is arranged on the maintenance platform, and a mounting hole is provided on the extension portion. One end of the telescopic mechanism passes through the mounting hole and extends toward the maintenance platform, and the other end of the telescopic mechanism is placed on the extension portion and fixed to the extension portion. The two infrared detection devices are arranged at the bottom of the extension portion and are located on both sides of the mounting hole.

[0016] In some possible embodiments, the main body is provided with an accommodating cavity, the top of the accommodating cavity is open, and the side wall of the main body facing the extension portion is provided with a first limiting through hole, the limiting telescopic device is arranged in the accommodating cavity, and the telescopic end of the limiting telescopic device can pass through the first limiting through hole and be connected to the telescopic mechanism to limit the telescopic mechanism.

[0017] In some possible embodiments, the limiting and retracting device includes:

[0018] a motor, wherein the motor is fixed in the accommodating cavity;

[0019] a coupling component, wherein the coupling component is fixed to one side of the motor;

[0020] a bearing component connected to the coupling component;

[0021] a screw, one end of which passes through the bearing component and the coupling component in sequence and is connected to the output end of the motor;

[0022] A transmission nut, the transmission nut being sleeved on the screw and threadably connected to the screw;

[0023] a sliding piston, the sliding piston being sleeved on the screw and in contact with the transmission nut;

[0024] a plurality of sliding rods, each of which is connected to a side of the sliding piston facing away from the transmission nut, and the plurality of sliding rods are arranged in a circumferential array;

[0025] a top plug, the top plug being fixedly connected to one end of the plurality of sliding rods away from the sliding piston;

[0026] A limiting member is fixedly connected to a side of the top plug away from the plurality of sliding rods, and a side of the limiting member away from the top plug extends toward the telescopic mechanism and can be connected to the telescopic mechanism in a limiting manner.

[0027] In some possible embodiments, the telescopic mechanism includes:

[0028] A double-headed cylinder, the double-headed cylinder is fixed on the fixing base and extends toward the maintenance platform, a second limiting through hole is opened on the top side of the double-headed cylinder, and the double-headed cylinder is located between the two infrared detection devices;

[0029] The piston rod is inserted into the double-headed cylinder, one end of the piston rod is detachably connected to the connecting hole, and the piston rod is provided with a plurality of third limiting through holes along its axial direction. The telescopic end of the limiting telescopic device extends out of the fixed seat and passes through the second limiting through hole and one of the third limiting through holes in sequence, thereby forming a height limit for the piston rod.

[0030] In some possible embodiments, the moving mechanism includes a power source, a power transmission component, a mounting seat, a moving wheel and a fixing component. The power source and the mounting seat are both installed at the bottom of the maintenance platform, the moving wheel and the fixing component are both fixed on the mounting seat, and both ends of the power transmission component are respectively connected to the output end of the power source and the moving wheel to transmit the power of the power source to the moving wheel. One end of the fixing component is connected to the mounting seat and can extend toward the bottom of the maintenance trench so that the fixing component contacts the bottom of the maintenance trench, and the length of the fixing component in the height direction is greater than the diameter of the moving wheel.

[0031] In some possible embodiments, the moving mechanism further includes a brake component, which is rotatably disposed on the mounting seat and located on one radial side of the moving wheel, and the brake component can rotate to abut against the moving wheel.

[0032] In some possible embodiments, the maintenance platform is rectangular, and there are four of the telescopic mechanism, the detection and fixing mechanism, and the movable mechanism, which are respectively arranged at four corners close to the maintenance platform, and each detection and fixing mechanism is connected to a corresponding telescopic mechanism.

[0033] In some possible embodiments, the lifting platform system also includes a control center and a main power supply, the telescopic mechanism, the detection and fixing mechanism, and the moving mechanism are all electrically connected to the main power supply, and the telescopic mechanism, the detection and fixing mechanism, and the moving mechanism are all signal-connected to the control center.

[0034] The technical solutions of the embodiments of the present invention have at least the following advantages and beneficial effects:

[0035] The present invention provides a lifting platform system for a rail transit vehicle depot maintenance trench. The system utilizes the structure of the maintenance platform to install the lifting platform system on the maintenance platform, thereby enabling maintenance of the maintenance platform and the rail vehicles located there. The lifting platform system allows workers to adapt to different maintenance positions at different heights during maintenance, eliminating the need for workers to frequently switch between standing and squatting positions or maintain a single position for extended periods, thereby improving work comfort. Furthermore, the lifting platform system can automatically move to the position corresponding to the maintenance location and automatically fix the telescopic mechanism through its detection and movement functions, thereby improving the degree of automation. Specifically, the system connects the maintenance platform with the telescopic mechanism to achieve the lifting and lowering of the maintenance platform. The detection and fixing mechanism detects the position of the maintenance platform. When the maintenance platform is detected to be in the appropriate position, the telescopic mechanism is extended and limited. This not only achieves support and limitation of the maintenance platform, but also ensures that the maintenance platform is in the appropriate position, including the horizontal movement position and the height position of the maintenance platform. BRIEF DESCRIPTION OF THE DRAWINGS

[0036] In order to more clearly illustrate the technical solutions of the embodiments of the present application, the following briefly introduces the drawings of the embodiments. Obviously, the drawings described below only relate to some embodiments of the present application and are not intended to limit the present application.

[0037] Figure 1 A schematic structural diagram of a lifting platform system for repairing trenches in a rail transit vehicle depot provided by an embodiment of the present invention;

[0038] Figure 2 for Figure 1 Schematic diagram of the explosion structure;

[0039] Figure 3 A schematic diagram of the connection structure between the detection fixing mechanism and the telescopic mechanism provided in an embodiment of the present invention;

[0040] Figure 4 for Figure 3 Schematic diagram of the explosion structure;

[0041] Figure 5 A schematic structural diagram of a position limiting and retractable device provided in an embodiment of the present invention;

[0042] Figure 6 for Figure 5 Schematic diagram of the explosion structure;

[0043] Figure 7 A schematic structural diagram of a telescopic mechanism provided in an embodiment of the present invention;

[0044] Figure 8 A schematic diagram of the connection structure between another detection fixing mechanism and the telescopic mechanism provided in an embodiment of the present invention;

[0045] Figure 9 A schematic structural diagram of a moving mechanism provided in an embodiment of the present invention.

[0046] Icons: 1. Maintenance platform; 11. Maintenance trench; 2. Lifting platform system; 21. Maintenance platform; 211. Connection hole; 212. Drain hole; 22. Telescopic mechanism; 221. Double-headed cylinder; 222. Piston rod; 2221. Third limit through hole; 23. Detection and fixing mechanism; 231. Fixing seat; 2311. Extension part; 2312. Main body; 232. Limiting and telescopic device; 2321. Motor; 2322. Coupling component; 2323. Bearing component; 2324. Screw; 2325. Drive nut; 2326. Sliding piston; 2327. Sliding rod; 2328. Top plug; 2329. Limiting part; 233. Infrared detection device; 24. Moving mechanism; 241. Mounting seat; 242. Moving wheel; 243. Fixing part; 244. Brake part. DETAILED DESCRIPTION

[0047] The following will be combined with the drawings in the embodiments of this application to clearly and completely describe the technical solutions in the embodiments of this application. Obviously, the embodiments described are only part of the embodiments of this application, not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without making any creative efforts shall fall within the scope of protection of this application.

[0048] In the description of this application, it should be understood that the terms "first" and "second" are used for descriptive purposes only and should not be understood to indicate or imply relative importance or the number of the technical features indicated. Therefore, a feature specified as "first" or "second" may explicitly or implicitly include one or more features. In the description of this application, "plurality" means two or more, unless otherwise specifically specified.

[0049] To facilitate understanding of the solution of the present application, the spline curves and arrows used in the drawings are explained here: the components indicated by the spline curves without arrows are solid components, that is, components with solid structures; the components indicated by the spline curves with arrows are virtual components, that is, components without solid structures.

[0050] Railway transportation has become a vital component of my country's transportation system. With a large fleet and high operating mileage, the maintenance of railway vehicles is particularly crucial. Routine maintenance of existing railway vehicles primarily relies on the depots of various railway operating units. Most depots are equipped with inspection trenches to facilitate technical inspections of rolling stock running gear, undercarriage equipment, and other equipment.

[0051] However, due to the varying heights of the running gear and undercarriage equipment on railway vehicles, the varying heights of maintenance personnel, and the varying heights of the equipment being inspected, maintenance personnel are forced to repeatedly perform inspections by standing and squatting. This creates blind spots for inspecting high-altitude equipment, resulting in poor operator comfort and low maintenance efficiency. Meeting the height requirements for inspecting different parts of the trench during maintenance has become a pressing issue.

[0052] To do this, see Figures 1 to 9 This application proposes a lifting platform system 2 for a maintenance trench 11 in a rail transit vehicle depot. The system is mainly used to intelligently adjust the height of the maintenance platform 21 to adapt to the current maintenance position, thereby solving the problem that the maintenance work process is uncomfortable due to the different heights of the staff and the different maintenance positions, which affects work efficiency. In addition, the system provides an automatic adjustment and fixation method for adjusting the height of the maintenance platform 21, which has a certain degree of automation and is more intelligent and convenient. In detail, the rail transit vehicle depot includes a maintenance platform 1, and the maintenance trench 11 is defined between the maintenance platforms 1. The lifting platform system 2 is arranged on the maintenance platform 1, and the lifting platform system 2 includes:

[0053] The maintenance platform 21 is provided in the maintenance trench 11 to provide a maintenance platform for the staff. The maintenance platform 21 is provided with a plurality of connection holes 211;

[0054] The telescopic mechanism 22 has a telescopic end detachably connected to the connecting hole 211 and is used to adjust the height of the maintenance platform 21;

[0055] A detection and fixing mechanism 23 is provided on the maintenance platform 21. The side of the telescopic mechanism 22 facing away from the telescopic end is fixed to the detection and fixing mechanism 23. The detection and fixing mechanism 23 is used to detect the position of the maintenance platform 21 and to perform telescopic positioning of the telescopic mechanism 22.

[0056] The moving mechanism 24 is provided at the bottom of the maintenance platform 21 and is used to drive the maintenance platform 21 to move in the maintenance trench 11 .

[0057] The technical solution provided by this application is mainly to install a lifting platform system 2 on the maintenance platform 1 by leveraging the inherent structure of the maintenance platform 1, thereby realizing the maintenance of the maintenance platform 1 and the rail vehicle at the maintenance platform 1; by utilizing the lifting platform system 2, workers can adapt to maintenance positions at different heights during maintenance, and workers do not need to frequently switch between standing and squatting positions or maintain a single posture for a long time during maintenance, thereby improving work comfort. In addition, the lifting platform system 2 can also automatically move to the corresponding position requiring maintenance and automatically fix the telescopic mechanism 22 through its detection and movement functions, thereby improving the degree of automation. In detail, the telescopic mechanism 22 is mainly connected to the maintenance platform 21 to realize the lifting and lowering of the maintenance platform 21, and then the detection and fixing mechanism 23 is used to detect the position of the maintenance platform 21. When it is detected that the maintenance platform 21 is in a suitable position, the telescopic mechanism 22 is telescoped and limited, which can not only realize the support and limitation of the maintenance platform 21, but also ensure that the maintenance platform 21 is in a suitable position. The suitable position here includes the horizontal movement position of the maintenance platform 21 and the lifting height position.

[0058] To better understand the technical solution of the present invention, the following details the maintenance platform 21, the telescopic mechanism 22, the detection and fixing mechanism 23, and the moving mechanism 24:

[0059] See Figures 3 to 6 , as for the detection and fixing mechanism 23, it includes:

[0060] The fixing seat 231 is provided on the maintenance platform 21 and extends above the maintenance trench 11;

[0061] The position-limiting telescopic device 232 is disposed inside the fixed seat 231, and the telescopic end of the position-limiting telescopic device 232 can extend outside the fixed seat 231 and be connected to the telescopic mechanism 22 to limit the telescopic movement of the telescopic mechanism 22 in the height direction;

[0062] Two infrared detection devices 233 are arranged at the bottom of the fixed seat 231 and located in the maintenance trench 11. The two infrared detection devices 233 are arranged opposite to each other along the moving direction of the maintenance platform 21. The telescopic mechanism 22 is located between the two infrared detection devices 233. The infrared detection device 233 emits infrared rays toward the maintenance platform 21 to detect the position between the connecting hole 211 and the telescopic mechanism 22.

[0063] A portion of the fixed seat 231 is fixed to the maintenance platform 21, primarily supporting and accommodating the position-limiting telescopic device 232. The other portion extends above the maintenance trench 11, primarily providing a mounting location for the telescopic mechanism 22 and two infrared detection devices 233 and facilitating detection by the infrared detection devices 233. The position-limiting telescopic device 232 is disposed within the fixed seat 231 and is primarily used to provide position-limiting support for the telescopic mechanism 22 when the telescopic mechanism 22 raises the maintenance platform 21 to an appropriate height, providing a certain level of support strength to prevent damage to the telescopic mechanism 22 and the maintenance platform 21 from falling due to excessive weight on the maintenance platform 21. Specifically, the telescopic end of the position-limiting telescopic device 232 extends to the exterior of the fixed seat 231 and is positionally connected to the telescopic mechanism 22. Thus, through the cooperation of the position-limiting telescopic device 232, the fixed seat 231, and the telescopic mechanism 22, the position-limiting fixation of the telescopic mechanism 22 is achieved.

[0064] The infrared detection device 233 is primarily used to emit infrared light, and then determines the current position of the maintenance platform 21 based on the change in the distance of the object illuminated by the infrared light. Specifically, two infrared detection devices 233 are installed at the bottom of the fixed base 231 and located within the maintenance trench 11, with the infrared emitting end of the infrared detection device 233 facing the maintenance platform 21 to determine the position of the maintenance platform 21. The two infrared detection devices 233 are arranged opposite each other along the movement direction of the maintenance platform 21, and the telescopic mechanism 22 is located between the two infrared detection devices 233. The maintenance platform 21 moves under the drive of the moving mechanism 24. When the maintenance platform 21 moves to the maintenance area, the infrared light of the infrared detection device 233 changes from irradiating the bottom of the maintenance trench 11 to irradiating the maintenance platform 21. At this time, the change in the irradiation distance of the infrared detection device 233 is fed back to the control center, and the control center can know that the maintenance platform 21 has moved to the maintenance area. The moving mechanism 24 continues to move with the maintenance platform 21. When the connecting hole 211 on the maintenance platform 21 moves below the infrared detection device 233, the control center can obtain the distance between the connecting hole 211 and the maintenance platform 21. Feedback that it has moved to the bottom of the infrared detection device 233; the maintenance platform 21 continues to move, and when the distance of the infrared light of the infrared detection device 233 that was first irradiated with the connecting hole 211 changes again, it can be judged that the connecting hole 211 is now located between the two infrared detection devices 233, corresponding to the position of the telescopic end of the telescopic mechanism 22. At this time, the control center controls the moving mechanism 24 to stop running, and the telescopic mechanism 22 is started. The telescopic end of the telescopic mechanism 22 is passed through the connecting hole 211 and is threadedly connected to the telescopic end of the telescopic mechanism 22 with a nut to fix the telescopic mechanism 22 to the maintenance platform 21. Then the control center controls the telescopic mechanism 22 to move up and down, driving the maintenance platform 21 to move up and down. When it is lifted to a certain height, the limit telescopic device 232 is controlled to extend through the fixed seat 231 and connect with the corresponding position limit on the telescopic mechanism 22 to achieve limit support for the telescopic mechanism 22. At this point, the entire work process of lifting the maintenance platform 21 to the appropriate position is completed. After that, the workers only need to enter the maintenance platform 21 to work. When the work is completed or the height needs to be changed, the telescopic mechanism 22 controls the maintenance platform 21 to adjust its height, and then the limit telescopic device 232 is used to limit it.

[0065] Furthermore, the fixing seat 231 includes an extension portion 2311 and a main body portion 2312. The extension portion 2311 is connected to the main body portion 2312 and extends to above the maintenance trench 11. The main body portion 2312 is arranged on the maintenance platform 1, and a mounting through hole is provided on the extension portion 2311. One end of the telescopic mechanism 22 extends toward the maintenance platform 21 through the mounting through hole, and the other end of the telescopic mechanism 22 is placed on the extension portion 2311 and fixed to the extension portion 2311. Two infrared detection devices 233 are provided at the bottom of the extension portion 2311 and are located on both sides of the mounting through hole. The two infrared detection devices 233 are arranged on both sides of the mounting through hole, which is conducive to judging the positional relationship between the current connection hole 211 and the telescopic mechanism 22 according to the movement of the maintenance platform 21, and the two infrared detection devices 233 will not form structural interference with the telescopic mechanism 22.

[0066] Furthermore, the main body 2312 defines a housing cavity with an open top. A first position-limiting through-hole is defined on the sidewall of the main body 2312 facing the extension portion 2311. The position-limiting and telescopic device 232 is disposed within the housing cavity, and the telescopic end of the position-limiting and telescopic device 232 can pass through the first position-limiting through-hole to connect with the telescopic mechanism 22, thereby limiting the extension and retraction of the telescopic mechanism 22. The open top of the housing cavity facilitates placement of the position-limiting and telescopic device 232 from the top, as well as replacement and maintenance of the position-limiting and telescopic device 232.

[0067] In some embodiments, for the first limiting through hole provided on the main body 2312, a plurality of first limiting through holes may be provided, and the plurality of first limiting through holes are arranged at intervals along the height direction. The specific number and intervals are selected according to actual conditions. In this embodiment, three first limiting through holes are provided. Correspondingly, three limiting telescopic devices 232 are arranged at intervals along the height direction in the accommodating cavity. Each limiting telescopic device 232 corresponds to a corresponding first limiting through hole, so that the telescopic end of the limiting telescopic device 232 can pass through the corresponding first limiting through hole. It should also be noted that a load-bearing plate is provided between two adjacent limiting telescopic devices 232 for supporting and fixing the limiting telescopic devices 232.

[0068] In some embodiments, see Figure 5 and Figure 6 , the limiting and retracting device 232 includes:

[0069] Motor 2321, motor 2321 is fixed in the accommodating cavity;

[0070] A coupling component 2322 , the coupling component 2322 is fixed to one side of the motor 2321 ;

[0071] A bearing component 2323 connected to the coupling component 2322;

[0072] Screw 2324, one end of which passes through bearing component 2323 and coupling component 2322 in sequence and is connected to the output end of motor 2321;

[0073] A transmission nut 2325 is sleeved on the screw rod 2324 and is threadedly connected to the screw rod 2324;

[0074] A sliding piston 2326 is sleeved on the screw 2324 and contacts the transmission nut 2325;

[0075] Multiple sliding rods 2327 , each connected to a side of the sliding piston 2326 facing away from the transmission nut 2325 , and arranged in a circumferential array;

[0076] A top plug 2328, the top plug 2328 is fixedly connected to one end of the plurality of sliding rods 2327 away from the sliding piston 2326;

[0077] The limiting member 2329 is fixedly connected to the side of the top plug 2328 away from the multiple sliding rods 2327. The side of the limiting member 2329 away from the top plug 2328 extends toward the telescopic mechanism 22 and can be connected to the telescopic mechanism 22 in a limiting manner.

[0078] The specific working process is as follows: the control center sends a control signal to start the motor 2321, or the staff manually turns on the motor 2321. The motor 2321 rotates, driving the screw 2324 to rotate. The transmission nut 2325 mounted on the screw 2324 moves along the axial direction of the screw 2324. During the movement, the transmission nut 2325 contacts and pushes the sliding piston 2326 to move. The sliding piston 2326 drives the sliding rod 2327 to move. The sliding rod 2327 pushes the limiter 2329 toward the telescopic mechanism 22, thereby achieving the extension function. For the shortening function, it is only necessary to control the reverse rotation of the motor 2321. Furthermore, the exact movement distance of the limiter 2329 can be calculated based on parameters such as the step angle of the motor 2321. The specific control is to control the speed and time of the motor 2321 to accurately achieve the movement distance of the limiter 2329.

[0079] In some embodiments, see Figure 7 , the telescopic mechanism 22 includes:

[0080] A double-headed cylinder 221 is fixed on the fixing base 231 and extends toward the maintenance platform 21. A second limiting through hole is opened on the top side of the double-headed cylinder 221. The double-headed cylinder 221 is located between the two infrared detection devices 233.

[0081] The piston rod 222 is passed through the double-headed cylinder 221, one end of the piston rod 222 is detachably connected to the connecting hole 211, and the piston rod 222 is provided with a plurality of third limiting through holes 2221 along its axial direction. The telescopic end of the limiting telescopic device 232 extends out of the fixed seat 231 and passes through the second limiting through hole and one of the third limiting through holes 2221 in sequence, forming a height limit for the piston rod 222.

[0082] The double-ended cylinder 221 acts on the piston rod 222, allowing it to rise and fall in height, thereby driving the maintenance platform 21. The piston rod 222 is provided with multiple third limiting holes 2221, and the double-ended cylinder 221 is provided with a second limiting hole. Depending on the desired height of the maintenance platform 21, the corresponding third limiting hole 2221 can be raised or lowered to correspond with the second limiting hole, forming a coaxial arrangement. The first limiting hole is then coaxially arranged with the second limiting hole. Driven by the motor 2321, the limiting member 2329 sequentially passes through the first limiting hole, the second limiting hole, and the third limiting hole 2221, thereby providing support and fixation for the telescopic mechanism 22 and ensuring that the maintenance platform 21 remains fixed at its current height. The provision of multiple third limiting holes 2221 increases the range of heights that the maintenance platform 21 can reach, accommodating a wider range of equipment to be inspected at different heights and personnel of varying heights.

[0083] In some embodiments, see Figure 8 There are multiple limit telescopic devices 232, and the limit parts 2329 of each limit telescopic device 232 correspond to a third limit through hole 2221. When the control center controls the limit telescopic device 232 to be extended or retracted, the limit parts 2329 of each limit telescopic device 232 pass through the corresponding third limit through hole 2221 respectively, thereby realizing multiple limits and supports for the telescopic mechanism 22, enhancing the carrying capacity of the telescopic mechanism 22, and increasing the weight that the maintenance platform 21 can bear, thereby preventing the maintenance platform 21 from falling due to excessive load and other dangerous situations.

[0084] It should be noted that, for the aforementioned limiting member 2329, one end thereof is fixed on the top plug 2328, and the other end is a columnar structure extending toward the end away from the top plug 2328, and the columnar structure is clearance-fitted with the first limiting through hole, the second limiting through hole and the third limiting through hole 2221.

[0085] In some embodiments, the maintenance platform 21 is provided with a plurality of drainage holes 212 arranged in a matrix array, ensuring the strength of the maintenance platform 21 while maximizing the number of drainage holes 212. Furthermore, the provision of drainage holes 212 effectively prevents the maintenance platform 21 from interfering with the drainage of wastewater and oil, thereby accommodating both trench drainage and height adjustment requirements.

[0086] In some embodiments, see Figure 9 The mobile mechanism 24 includes a power source, a power transmission component, a mounting base 241, a moving wheel 242, and a fixing component 243. The power source and mounting base 241 are both mounted on the bottom of the maintenance platform 21. The moving wheel 242 and the fixing component 243 are both fixed to the mounting base 241. The two ends of the power transmission component are respectively connected to the output end of the power source and the moving wheel 242 to transmit the power of the power source to the moving wheel 242. One end of the fixing component 243 is connected to the mounting base 241 and can extend toward the bottom of the maintenance trench 11 so that the fixing component 243 contacts the bottom of the maintenance trench 11. The length of the fixing component 243 in the height direction is greater than the diameter of the moving wheel 242. The power source here is the engine, and the power transmission component is the drive shaft, which transmits the power generated by the engine to the moving wheel 242, so that the moving wheel 242 can drive the maintenance platform 21 to move. When the moving wheel 242 drives the maintenance platform 21 to move, the fixing member 243 is in a shortened state, preventing the fixing member 243 from contacting the bottom of the maintenance trench 11, thereby preventing it from interfering with the rolling of the moving wheel 242. When the maintenance platform 21 moves to the target position, the moving wheel 242 stops rotating. To prevent the maintenance platform 21 from continuing to slide due to uneven terrain of the maintenance trench 11, the fixing member 243 can be extended until the fixing member 243 contacts the bottom surface of the maintenance trench 11 and the moving wheel 242 is lifted off the ground, thereby effectively improving the static stability of the maintenance platform 21. The extension and shortening of the fixing member 243 can be achieved by threading the fixing member 243 with the mounting base 241. By rotating the fixing member 243, the distance between the fixing member 243 and the bottom surface of the maintenance trench 11 can be adjusted.

[0087] Furthermore, the moving mechanism 24 also includes a brake member 244, which is rotatably mounted on the mounting base 241 and located on one side of the radial direction of the moving wheel 242. The brake member 244 can rotate to abut against the moving wheel 242. Specifically, when a downward force is applied to the brake member 244, the brake member 244 rotates downward, abutting against the moving wheel 242, thereby achieving a deceleration and braking effect. The brake member 244 is mainly used when the maintenance platform 21 is driven by a power source to move to the target area, but continues to slide due to a certain inertia. The staff can then stop the maintenance platform 21 as soon as possible by stepping on the brake member 244.

[0088] In some embodiments, the maintenance platform 21 is rectangular, and four telescopic mechanisms 22, detection and fixing mechanisms 23, and movable mechanisms 24 are provided, each located near the four corners of the maintenance platform 21. Each detection and fixing mechanism 23 is connected to a corresponding telescopic mechanism 22. The provision of four telescopic mechanisms 22, detection and fixing mechanisms 23, and movable mechanisms 24 effectively accommodates the rectangular shape of the maintenance platform 21, ensuring that the maintenance platform 21 remains balanced and stable during the lifting and moving processes.

[0089] In some embodiments, the lifting platform system 2 further includes a control console and a main power supply. The telescopic mechanism 22, the detection and fixing mechanism 23, and the mobile mechanism 24 are all electrically connected to the main power supply. The telescopic mechanism 22, the detection and fixing mechanism 23, and the mobile mechanism 24 are all signal-connected to the control console. The signal connection herein may be via a wired electrical signal connection or a wireless signal connection, such as WIFI, a local area network, or the like, without limitation.

[0090] Based on the lifting platform system 2 described in the aforementioned embodiment, the present application further provides a method for adjusting the height of a lifting platform for a rail transit vehicle depot maintenance trench 11, comprising:

[0091] The power source is started, and the moving mechanism 24 drives the maintenance platform 21 to move in the maintenance trench 11;

[0092] When the maintenance platform 21 moves to the maintenance area, the infrared detection device 233 irradiates the maintenance platform 21. Compared with the original irradiation to the maintenance trench 11, the infrared irradiation distance changes. This change is fed back to the control center, and the control center analyzes and finds that the maintenance platform 21 has moved into the maintenance area.

[0093] The maintenance platform 21 continues to move until the infrared ray emitted by the first infrared detection device 233 passes through the connection hole 211 and irradiates the bottom surface of the maintenance trench 11. The infrared ray irradiation distance changes, and the change is fed back to the control center. The control center analyzes and finds that one of the connection holes 211 of the maintenance platform 21 has moved below the telescopic mechanism 22.

[0094] The maintenance platform 21 continues to move, and the light irradiated by the first infrared detection device 233 shifts from passing through the connection hole 211 to irradiating the maintenance platform 21. At this time, the light from the second infrared detection device 233, which is arranged opposite to the first infrared detection device 233, is still irradiating the maintenance platform 21. The control center then determines that the telescopic end of the telescopic mechanism 22 is now aligned with the connection hole 211.

[0095] The control console controls the double-headed cylinder 221 to start, driving the piston rod 222 to move toward the connecting hole 211 and pass through the connecting hole 211, and then uses a nut to fix the piston rod 222 to the maintenance platform 21;

[0096] The control center controls the operation of the telescopic mechanism 22, and the piston rod 222 is extended and retracted in the height direction to lift the maintenance platform 21 to the target height, and stops the operation of the telescopic mechanism 22;

[0097] The control center controls the detection and fixing mechanism 23 to operate, and the limiting member 2329 moves toward the lower piston rod 222 and passes through the third limiting through hole 2221 on the piston rod 222 , thereby achieving limiting support for the piston rod 222 .

[0098] The entire height adjustment process of the maintenance platform 21 is now completed. If the height position of the maintenance platform 21 needs to be changed subsequently, the control process can be continued according to the above control process.

[0099] It should also be noted that as the aforementioned inspection platform 21 continues to move, the light irradiated by the first infrared detection device 233 shifts from passing through the connection hole 211 to irradiating the inspection platform 21. At this time, the light from the second infrared detection device 233, which is located opposite the first infrared detection device 233, is still irradiating the inspection platform 21. The control center then determines that the telescopic end of the telescopic mechanism 22 corresponds to the position of the connection hole 211, which refers to the operation process of one of the infrared detection devices 233. If the inspection platform 21 is rectangular and has multiple detection and fixing mechanisms 23, the control center will simultaneously determine the positional relationship between each detection and fixing mechanism 23 and the corresponding connection hole 211. When all detection and fixing mechanisms 23 correspond to the corresponding connection holes 211, the telescopic mechanism 22 will be controlled to operate to connect to the inspection platform 21.

[0100] The basic concepts have been described above. It will be apparent to those skilled in the art that the detailed disclosure above is merely illustrative and does not limit the present application. Although not explicitly stated herein, those skilled in the art may make various modifications, improvements, and amendments to the present application. Such modifications, improvements, and amendments are suggested in the present application and remain within the spirit and scope of the exemplary embodiments of the present application.

[0101] At the same time, this application uses specific terms to describe the embodiments of this application. For example, "one embodiment," "an embodiment," and / or "some embodiments" refer to a certain feature, structure, or characteristic related to at least one embodiment of this application. Therefore, it should be emphasized and noted that "one embodiment," "an embodiment," or "an alternative embodiment" mentioned twice or multiple times in different locations in this specification does not necessarily refer to the same embodiment. In addition, certain features, structures, or characteristics in one or more embodiments of this application may be appropriately combined.

[0102] Similarly, it should be noted that, in order to simplify the description of this application and thus facilitate understanding of one or more embodiments of the application, the foregoing description of the embodiments of this application sometimes combines multiple features into a single embodiment, figure, or description thereof. However, this disclosure method does not mean that the subject matter of this application requires more features than those recited in the claims. In fact, the features of an embodiment may be fewer than all the features of the individual embodiments disclosed above.

[0103] Each patent, patent application, patent application publication, and other materials, such as articles, books, specifications, publications, and documents, cited in this application is hereby incorporated by reference in its entirety, except for any application history that is inconsistent with or conflicts with this application, and any document (currently or subsequently appended to this application) that limits the broadest scope of the claims of this application. It should be noted that if the descriptions, definitions, and / or terminology used in the accompanying materials are inconsistent with or conflict with the content of this application, the descriptions, definitions, and / or terminology used in this application will control.

[0104] The above are merely preferred embodiments of the present application and are not intended to limit the present application. Those skilled in the art will readily appreciate that various modifications and variations are possible. Any modifications, equivalent substitutions, or improvements made within the spirit and principles of the present application shall be included within the scope of protection of the present application.

Claims

1. A lifting platform system for a maintenance trench in a rail transit vehicle depot, wherein the rail transit vehicle depot includes maintenance platforms, wherein a maintenance trench is defined between the maintenance platforms, and the lifting platform system is arranged on the maintenance platforms, characterized in that: The lifting platform system includes: A maintenance platform is provided in the maintenance trench to provide a maintenance platform for the staff, and a plurality of connection holes are provided on the maintenance platform; a telescopic mechanism, wherein the telescopic end of the telescopic mechanism is detachably connected to the connecting hole and is used to adjust the height position of the maintenance platform; A detection and fixing mechanism, the detection and fixing mechanism is provided on the maintenance platform, the side of the telescopic mechanism facing away from the telescopic end is fixed to the detection and fixing mechanism, the detection and fixing mechanism is used to detect the position of the maintenance platform and to perform telescopic positioning of the telescopic mechanism; A moving mechanism, the moving mechanism being arranged at the bottom of the maintenance platform and being used for driving the maintenance platform to move in the maintenance trench; The detection and fixing mechanism comprises: A fixing seat, the fixing seat being arranged on the maintenance platform and extending above the maintenance trench; A position-limiting telescopic device, wherein the position-limiting telescopic device is arranged inside the fixing seat, and the telescopic end of the position-limiting telescopic device can extend to the outside of the fixing seat and be connected to the telescopic mechanism in a limiting manner to limit the telescopic mechanism in the height direction; Two infrared detection devices, the two infrared detection devices are provided at the bottom of the fixing base and located in the maintenance trench, the two infrared detection devices are arranged opposite to each other along the moving direction of the maintenance platform, the telescopic mechanism is located between the two infrared detection devices, and the infrared detection devices emit infrared rays toward the maintenance platform to detect the position between the connecting hole and the telescopic mechanism; The fixing seat includes an extension portion and a main body portion, the extension portion is connected to the main body portion and extends above the maintenance trench, the main body portion is arranged on the maintenance platform, and a mounting hole is provided on the extension portion. One end of the telescopic mechanism passes through the mounting hole and extends toward the maintenance platform, and the other end of the telescopic mechanism is placed on the extension portion and fixed to the extension portion. The two infrared detection devices are arranged at the bottom of the extension portion and are located on both sides of the mounting hole.

2. A lifting platform system for a rail transit vehicle depot maintenance trench according to claim 1, characterized in that: The main body is provided with an accommodating cavity, the top of the accommodating cavity is open, and the side wall of the main body facing the extension portion is provided with a first limiting through hole, the limiting telescopic device is arranged in the accommodating cavity, and the telescopic end of the limiting telescopic device can pass through the first limiting through hole and be connected to the telescopic mechanism to limit the telescopic mechanism.

3. A lifting platform system for a rail transit vehicle depot maintenance trench according to claim 2, characterized in that: The limiting telescopic device comprises: a motor, wherein the motor is fixed in the accommodating cavity; a coupling component, wherein the coupling component is fixed to one side of the motor; a bearing component connected to the coupling component; a screw, one end of which passes through the bearing component and the coupling component in sequence and is connected to the output end of the motor; A transmission nut, the transmission nut being sleeved on the screw and threadably connected to the screw; a sliding piston, the sliding piston being sleeved on the screw and in contact with the transmission nut; a plurality of sliding rods, each of which is connected to a side of the sliding piston facing away from the transmission nut, and the plurality of sliding rods are arranged in a circumferential array; a top plug, the top plug being fixedly connected to one end of the plurality of sliding rods away from the sliding piston; A limiting member is fixedly connected to a side of the top plug away from the plurality of sliding rods, and a side of the limiting member away from the top plug extends toward the telescopic mechanism and can be connected to the telescopic mechanism in a limiting manner.

4. The lifting platform system for the maintenance trench of a rail transit vehicle depot according to claim 1 is characterized in that: The telescopic mechanism comprises: A double-headed cylinder, the double-headed cylinder is fixed on the fixing base and extends toward the maintenance platform, a second limiting through hole is opened on the top side of the double-headed cylinder, and the double-headed cylinder is located between the two infrared detection devices; The piston rod is inserted into the double-headed cylinder, one end of the piston rod is detachably connected to the connecting hole, and the piston rod is provided with a plurality of third limiting through holes along its axial direction. The telescopic end of the limiting telescopic device extends out of the fixed seat and passes through the second limiting through hole and one of the third limiting through holes in sequence, thereby forming a height limit for the piston rod.

5. The lifting platform system for the maintenance trench of a rail transit vehicle depot according to claim 1 is characterized in that: The moving mechanism includes a power source, a power transmission component, a mounting seat, a moving wheel and a fixing component. The power source and the mounting seat are both installed at the bottom of the maintenance platform, and the moving wheel and the fixing component are both fixed on the mounting seat. The two ends of the power transmission component are respectively connected to the output end of the power source and the moving wheel to transmit the power of the power source to the moving wheel. One end of the fixing component is connected to the mounting seat and can extend toward the bottom of the maintenance trench so that the fixing component contacts the bottom of the maintenance trench. The length of the fixing component in the height direction is greater than the diameter of the moving wheel.

6. A lifting platform system for a rail transit vehicle depot maintenance trench according to claim 5, characterized in that: The moving mechanism further includes a brake component, which is rotatably mounted on the mounting seat and located on one side of the radial direction of the moving wheel. The brake component can rotate to abut against the moving wheel.

7. The lifting platform system for a rail transit vehicle depot maintenance trench according to claim 1, characterized in that: The maintenance platform is rectangular, and four of the telescopic mechanisms, the detection and fixing mechanisms, and the moving mechanisms are respectively arranged at four corners close to the maintenance platform, and each detection and fixing mechanism is connected to a corresponding telescopic mechanism.

8. A lifting platform system for a rail transit vehicle depot maintenance trench according to any one of claims 1 to 7, characterized in that: The lifting platform system also includes a control center and a main power supply. The telescopic mechanism, the detection and fixing mechanism, and the moving mechanism are all electrically connected to the main power supply. The telescopic mechanism, the detection and fixing mechanism, and the moving mechanism are all signal-connected to the control center.

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