Urban rail transit vehicle jacking cylinder rapid positioning tool
By designing a rapid positioning fixture for lifting cylinders of urban rail transit vehicles, and utilizing an automated system of measurement, positioning, and transportation components, the problems of low positioning efficiency, insufficient accuracy, and poor adaptability were solved, achieving efficient and accurate cylinder positioning and a safe maintenance process.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TAIYUAN CHINA RAILWAY RAIL TRANSIT CONSTR & OPERATION CO LTD
- Filing Date
- 2025-08-21
- Publication Date
- 2026-07-21
AI Technical Summary
Existing positioning fixtures for lifting cylinders in urban rail transit vehicles suffer from low positioning efficiency, insufficient accuracy, poor adaptability, and difficulties in transportation and movement, resulting in low maintenance efficiency, high costs, and insufficient safety.
A rapid positioning fixture comprising a measuring component, a positioning component, a clamping component, and a transport component was designed. It utilizes an industrial camera, a laser emitter, and a motor-driven lead screw system for precise positioning and adaptation, and combines a hydraulic system and pulley blocks to achieve automated positioning and movement.
It improves positioning efficiency and accuracy, reduces manual operation time and costs, enhances equipment adaptability and safety, and reduces the intensity of manual handling.
Smart Images

Figure CN224526998U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of urban rail transit vehicle maintenance equipment, specifically to a quick positioning tool for the lifting cylinder of an urban rail transit vehicle. Background Technology
[0002] The positioning fixture for the lifting cylinder of urban rail transit vehicles is a device used to ensure the accurate installation position of the lifting cylinder, guarantee its working accuracy and stability, and improve the efficiency and safety of vehicle inspection and maintenance.
[0003] In existing technologies, firstly, the positioning efficiency is low, relying on manual measurement and adjustment, which is cumbersome and consumes a lot of time and labor costs; secondly, the positioning accuracy is insufficient, making it difficult to meet the installation requirements of modern high-precision equipment, affecting the performance and safety of vehicles after maintenance; thirdly, the adaptability is poor, with a fixed and simple structure that cannot flexibly adapt to different specifications and models of lifting cylinders; and fourthly, transportation and movement are difficult, requiring the positioning fixture to be moved to the designated position before installing the cylinder, which involves heavy manual handling and consumes a lot of labor costs.
[0004] Therefore, in the current environment, there is a need to design a quick positioning tool for the lifting cylinder of urban rail transit vehicles to solve the technical problems mentioned in the background. Utility Model Content
[0005] This invention provides a quick positioning tool for the lifting cylinder of an urban rail transit vehicle to solve the technical problems mentioned in the background.
[0006] This utility model provides a quick positioning fixture for lifting cylinders of urban rail transit vehicles. The quick positioning fixture for lifting cylinders of urban rail transit vehicles includes a base plate, a support frame, a measuring component for measuring the position of the cylinder, a positioning component for positioning the cylinder in conjunction with the measuring component, a clamping component for adapting to lifting cylinders of different sizes, and a transport component for easy manual movement. The support frame is installed on the top of the base plate, the measuring component is installed on the support frame, the positioning component is installed on the top of the base plate and directly below the measuring component, the clamping component is installed on the positioning component, and the transport component is installed at the bottom of the base plate.
[0007] Optionally, the measuring assembly includes a first industrial camera, a second industrial camera, a coordinate system laser emitter, and a base laser emitter. The first industrial camera is mounted on the top of the support frame, the second industrial camera is mounted on one end of the support frame, the coordinate system laser emitter is mounted on the end of the support frame near the second industrial camera, and the base laser emitter is mounted on the clamping assembly.
[0008] Optionally, the positioning component includes a horizontal part for horizontal positioning, a vertical part for vertical positioning, and a three-dimensional part for three-dimensional positioning. The horizontal part is mounted on the top of the base plate, the vertical part is mounted on the horizontal part, and the three-dimensional part is mounted on the vertical part.
[0009] Optionally, the horizontal section includes multiple horizontal lead screws, multiple horizontal motors, and multiple horizontal slides. The multiple horizontal lead screws are all installed on the top of the base plate and are respectively located on both sides of the base plate. The multiple horizontal motors correspond one-to-one with the multiple horizontal lead screws, and the horizontal motors are connected to the output ends of the horizontal lead screws. The multiple horizontal slides correspond one-to-one with the multiple horizontal lead screws, and the horizontal slides are installed on the horizontal lead screws.
[0010] Optionally, the vertical part includes a vertical lead screw, a vertical motor, and a vertical slide. The vertical lead screw is mounted on the horizontal part, the vertical motor is connected to the output end of the vertical lead screw, and the vertical slide is mounted on the vertical lead screw.
[0011] Optionally, the three-dimensional part includes a hydraulic pump and a piston rod, the hydraulic pump is mounted on the vertical part, and the piston rod is connected to the output end of the hydraulic pump.
[0012] Optionally, the clamping assembly includes a connecting rod, multiple positioning jaws, and multiple hydraulic cylinders. The connecting rod is mounted on the positioning assembly, the multiple positioning jaws are respectively mounted on both ends of the connecting rod, and the multiple hydraulic cylinders are all mounted on the positioning assembly. Each of the multiple hydraulic cylinders corresponds one-to-one with a multiple positioning jaw. The hydraulic cylinder is located directly below the positioning jaw and is in communication with the positioning jaw.
[0013] Optionally, the transport assembly includes multiple longitudinal rods, multiple pulley blocks, and multiple limiters. The multiple longitudinal rods are all installed at the bottom end of the base plate. The multiple pulley blocks correspond one-to-one with the multiple longitudinal rods and are installed at the bottom end of the longitudinal rods. The multiple limiters correspond one-to-one with the multiple pulley blocks and are rotatably mounted on the pulley blocks.
[0014] The beneficial effects of this utility model are as follows:
[0015] This rapid positioning fixture for lifting cylinders of urban rail transit vehicles includes a base plate, a support frame, a measuring component for measuring the cylinder position, a positioning component for positioning the cylinder in conjunction with the measuring component, a clamping component for adapting to lifting cylinders of different sizes, and a transport component for easy manual movement. The support frame is mounted on the top of the base plate, the measuring component is mounted on the support frame, the positioning component is mounted on the top of the base plate and directly below the measuring component, the clamping component is mounted on the positioning component, and the transport component is mounted on the bottom of the base plate. This rapid positioning fixture for lifting cylinders of urban rail transit vehicles reduces the tediousness of manual operation through the measuring component, thereby improving positioning efficiency and reducing working time and labor costs. The measuring component, in conjunction with the positioning component, avoids inaccurate positioning, thus improving installation accuracy and ensuring the performance and safety of vehicle maintenance. The clamping component can adapt to lifting cylinders of more sizes, thereby improving the adaptability of the equipment. The transport component makes the entire positioning fixture easier to move and transport manually, thereby reducing the intensity of manual handling and saving labor costs. Attached Figure Description
[0016] To more clearly illustrate the technical solutions in the embodiments of this utility model, the drawings used in the description of the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.
[0017] Figure 1 This is a first-view structural schematic diagram of a quick positioning tool for lifting cylinders of urban rail transit vehicles provided by this utility model.
[0018] Figure 2 This is a second-view structural schematic diagram of a quick positioning tool for lifting cylinders of urban rail transit vehicles provided by this utility model;
[0019] Figure 3 This is a third-view structural diagram of a quick positioning tool for lifting cylinders of urban rail transit vehicles provided by this utility model.
[0020] Figure 4 This is a fourth-view structural diagram of a quick positioning tool for lifting cylinders of urban rail transit vehicles provided by this utility model.
[0021] Explanation of reference numerals in the attached drawings: 1. Base plate; 2. Support frame; 3. Measuring component; 31. First industrial camera; 32. Second industrial camera; 33. Coordinate system laser emitter; 34. Base laser emitter; 4. Positioning component; 41. Horizontal part; 411. Horizontal lead screw; 412. Horizontal motor; 413. Horizontal slide; 42. Vertical part; 421. Vertical lead screw; 422. Vertical motor; 423. Vertical slide; 43. Solid part; 431. Hydraulic pump; 432. Piston rod; 5. Clamping component; 51. Connecting rod; 52. Positioning gripper; 53. Hydraulic cylinder; 6. Transport component; 61. Longitudinal rod; 62. Pulley block; 63. Limiter. Detailed Implementation
[0022] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. It should be understood that the specific embodiments described herein are only for explaining the present utility model and not for limiting it. Furthermore, it should be noted that, for ease of description, only the parts related to the present utility model are shown in the drawings, not all of the structures. All other embodiments obtained by those skilled in the art based on the embodiments of the present utility model without creative effort are within the scope of protection of the present utility model.
[0023] In this document, the term "embodiment" means that a particular feature, structure, or characteristic described in connection with an embodiment may be included in at least one embodiment of the present invention. The appearance of this phrase in various places throughout the specification does not necessarily refer to the same embodiment, nor is it a separate or alternative embodiment mutually exclusive with other embodiments. It will be explicitly and implicitly understood by those skilled in the art that the embodiments described herein can be combined with other embodiments.
[0024] Please see Figures 1 to 4 The present invention provides a quick positioning fixture for lifting cylinders of urban rail transit vehicles, comprising a base plate 1, a support frame 2, a measuring component 3, a positioning component 4, a clamping component 5, and a transport component 6.
[0025] The support frame 2 is installed at the top of the base plate 1, the measuring component 3 is installed on the support frame 2, the positioning component 4 is installed at the top of the base plate 1 and is located directly below the measuring component 3, the clamping component 5 is installed on the positioning component 4, and the transport component 6 is installed at the bottom of the base plate 1.
[0026] Among them, support frame 2 serves as support, and measuring component 3 serves as a reference;
[0027] Meanwhile, when it is necessary to position the lifting cylinder, the entire positioning fixture can be moved to the working area via the transport component 6;
[0028] Furthermore, when it is necessary to position the lifting cylinder, a forklift or other handling equipment is used to place the lifting cylinder stably in the area of the clamping assembly 5. After the lifting cylinder is placed, the measuring assembly 3 starts to work. The measuring assembly 3 projects the positioning reference line and begins to collect the relative position image of the lifting cylinder and the positioning fixture. The image is transmitted to the external processing software, which calculates the deviation between the actual position of the lifting cylinder and the target position in the X, Y, and Z directions. Finally, the deviation data is fed back to the positioning assembly 4 and the clamping assembly 5.
[0029] Furthermore, after receiving the deviation data from the lifting cylinder, the positioning component 4 and clamping component 5 clamp the lifting cylinder according to its size. When the clamping component 5 contacts the surface of the lifting cylinder, a pressure sensor is installed at the position of the clamping component 5. The external processing software can adjust the adaptive clamping force according to the data transmitted by the pressure sensor to ensure that the lifting cylinder is clamped evenly and firmly, and that the clamping force does not damage the surface of the lifting cylinder. Then, the positioning component 4 starts to work, and the external processing software calculates the distance to be adjusted by the positioning component 4 according to the deviation data. Then, the positioning component 4 works with the clamping component 5 to complete the X, Y, and Z axis positioning of the lifting cylinder. When the lifting cylinder reaches the target position, the measuring component 3 starts again to check the position of the lifting cylinder. If the position is qualified, the work stops; if the position is not qualified, the above process is repeated to reposition the lifting cylinder.
[0030] In this embodiment, the first industrial camera 31 is mounted on the top of the support frame 2, the second industrial camera 32 is mounted on one end of the support frame 2, the coordinate system laser emitter 33 is mounted on the end of the support frame 2 near the second industrial camera 32, and the base laser emitter 34 is mounted on the clamping assembly 5.
[0031] Among them, the first industrial camera 31, the second industrial camera 32, the coordinate system laser emitter 33, and the base laser emitter 34 are all connected to an external motor, which serves as the power source for these four components.
[0032] Meanwhile, the first industrial camera 31 is responsible for measuring the deviation between the base and the coordinate laser on the X and Y axes, and the second industrial camera 32 is responsible for measuring the deviation between the base and the coordinate laser on the Z axis.
[0033] Furthermore, after the lifting cylinder is smoothly placed in the clamping assembly area by a forklift or other handling equipment, the measuring assembly 3 starts to work. First, the coordinate system laser emitter 33 and the base laser emitter 34 project positioning reference lines respectively. At this time, the laser emitted by the coordinate system laser emitter 33 is the reference, and the laser emitted by the base laser emitter 34 is the position of the lifting cylinder. Then, the first industrial camera 31 and the second industrial camera 32 start to collect the laser images emitted by the base laser emitter 34 and the coordinate system laser emitter 33, and transmit the images to the external processing software. The external software calculates the positional deviation between the base laser and the coordinate system laser, and finally feeds the deviation data back to the positioning assembly 4 and the clamping assembly 5 for position adjustment to avoid inaccurate positioning, thereby improving installation accuracy and ensuring the performance and safety of vehicle maintenance.
[0034] In this embodiment, the horizontal part 41 is installed on the top of the base plate 1, the vertical part 42 is installed on the horizontal part 41, and the three-dimensional part 43 is installed on the vertical part 42.
[0035] The horizontal part 41 is responsible for positioning in the X-axis direction, the vertical part 42 is responsible for positioning in the Y-axis direction, and the three-dimensional part 43 is responsible for positioning in the Z-axis direction.
[0036] Meanwhile, receivers for receiving deviation signals from external processing software are installed at the horizontal part 41, vertical part 42, and three-dimensional part 43. When the external processing software receives the image and calculates the positional deviation between the base laser and the coordinate system laser, it transmits this data to the receivers at the horizontal part 41, vertical part 42, and three-dimensional part 43. The receivers then control the horizontal part 41, vertical part 42, and three-dimensional part 43 to perform position correction, thereby improving the installation accuracy of the lifting cylinder and ensuring the performance and safety of the vehicle after maintenance.
[0037] In this embodiment, multiple horizontal lead screws 411 are installed on the top of the base plate 1 and are respectively located on both sides of the base plate 1. Multiple horizontal motors 412 correspond one-to-one with multiple horizontal lead screws 411, and the output ends of the horizontal motors 412 and the horizontal lead screws 411 are connected. Multiple horizontal slides 413 correspond one-to-one with multiple horizontal lead screws 411, and the horizontal slides 413 are installed on the horizontal lead screws 411.
[0038] When the external processing software transmits the deviation data to the receiver of the horizontal section 41, the receiver of the horizontal section 41 transmits the working signal of the required movement distance to the controller of the horizontal section 41. At this time, the controller controls the horizontal motor 412 to start working. The horizontal motor 412 drives the horizontal lead screw 411 to rotate. The horizontal slide 413 is provided with a nut seat. Under the drive of the nut seat, the horizontal slide 413 can move along the horizontal lead screw 411, thereby achieving the purpose of position correction in the X-axis direction.
[0039] In this embodiment, the vertical lead screw 421 is mounted on the horizontal part 41, the vertical motor 422 is connected to the output end of the vertical lead screw 421, and the vertical slide 423 is mounted on the vertical lead screw 421.
[0040] When the external processing software transmits the deviation data to the receiver of the vertical section 42, the receiver of the vertical section 42 needs to transmit the working signal of the moving distance to the controller of the vertical section 42. At this time, the controller controls the vertical motor 422 to start working. The vertical motor 422 drives the vertical lead screw 421 to rotate. The vertical slide 423 is provided with a nut seat. Under the drive of the nut seat, the slide can move along the vertical lead screw 421, thereby achieving the purpose of position correction in the Y-axis direction.
[0041] In this embodiment, the hydraulic pump 431 is mounted on the vertical part 42, and the piston rod 432 is connected to the output end of the hydraulic pump 431.
[0042] The hydraulic pump 431 is equipped with a receiver for receiving deviation signals from external processing software and a controller for controlling the oil supply of the hydraulic pump 431 based on the deviation data.
[0043] Meanwhile, when the external processing software transmits the deviation data to the receiver at the hydraulic pump 431, the external control software controls the hydraulic pump 431 and piston rod 432 to work together based on the height deviation data. When it is necessary to raise the lifting cylinder, the hydraulic pump 431 supplies oil to the piston rod 432, pushing the piston rod 432 upward to ensure a smooth lifting process. When it is necessary to lower the cylinder, the hydraulic oil in the piston rod 432 flows back, and the piston rod 432 descends under the gravity of the lifting cylinder. Through the coordinated work of the hydraulic pump 431 and piston rod 432, the precise height adjustment of the lifting cylinder in the Z-axis direction is achieved until the lifting cylinder reaches the predetermined position. Through the three-axis positioning of the horizontal part 41, the vertical part 42, and the three-dimensional part 43, the phenomenon of inaccurate positioning is avoided, thereby improving the installation accuracy and ensuring the performance and safety of vehicle maintenance.
[0044] In this embodiment, the connecting rod 51 is mounted on the piston rod 432, the plurality of positioning jaws 52 are respectively mounted on both ends of the connecting rod 51, and the plurality of hydraulic cylinders 53 are mounted on the positioning assembly 4. The plurality of hydraulic cylinders 53 correspond one-to-one with the plurality of positioning jaws 52. The hydraulic cylinders 53 are located directly below the positioning jaws 52, and the hydraulic cylinders 53 are in communication with the positioning jaws 52.
[0045] Among them, a pressure sensor for detecting clamping force is installed at hydraulic cylinder 53;
[0046] Simultaneously, after receiving the position deviation data transmitted by the external processing software, the controller sends a command to the hydraulic cylinder 53 according to the preset program. At this time, the hydraulic cylinder 53 starts and pushes the connecting rod 51, which is equipped with the positioning gripper 52, to move. During the process of the connecting rod 51 driving the positioning gripper 52 to move, the pressure sensor monitors the clamping force in real time and feeds the data back to the external processing software. When the positioning gripper 52 contacts the surface of the lifting cylinder, the external processing software automatically adjusts the oil supply of the hydraulic cylinder 53 according to the data of the pressure sensor and the preset clamping force range, so that the positioning gripper 52 can achieve adaptive centering and clamping, ensuring that the lifting cylinder is clamped evenly and firmly, and that the clamping force will not damage the surface of the lifting cylinder. The clamping component 5, through the hydraulic cylinder 53 and the pressure sensor, realizes the clamping work of lifting cylinders of different sizes, so that the positioning fixture can be adapted to more sizes of lifting cylinders, thereby improving the adaptability of the positioning fixture.
[0047] In this embodiment, multiple longitudinal rods 61 are installed at the bottom end of the base plate 1, multiple pulley sets 62 correspond one-to-one with multiple longitudinal rods 61, and the pulley sets 62 are installed at the bottom end of the longitudinal rods 61. Multiple limiters 63 correspond one-to-one with multiple pulley sets 62, and the limiters 63 are rotatably mounted on the pulley sets 62.
[0048] When moving the positioning fixture, the limiter 63 on each pulley block 62 needs to be lifted so that the pulley block 62 can start to move. When it moves to the designated position, the limiter 63 is pushed down to complete the fixing.
[0049] Meanwhile, the pulley block 62 is connected to the longitudinal rod 61, which allows rotation in all directions, thus avoiding the need for a large amount of labor to move the equipment due to the limitations of the working environment, thereby reducing the intensity of manual labor.
[0050] In summary, the rapid positioning fixture for the lifting cylinder of the urban rail transit vehicle includes a base plate 1, a support frame 2, a measuring component 3 for measuring the cylinder position, a positioning component 4 for positioning the cylinder in conjunction with the measuring component 3, a clamping component 5 for adapting to lifting cylinders of different sizes, and a transport component 6 for easy manual movement. The support frame 2 is installed on the top of the base plate 1, the measuring component 3 is installed on the support frame 2, the positioning component 4 is installed on the top of the base plate 1 and directly below the measuring component 3, the clamping component 5 is installed on the positioning component 4, and the transport component 6 is installed on the base plate. At the bottom of component 1, the quick positioning fixture for lifting cylinders of urban rail transit vehicles of this utility model reduces the cumbersomeness of manual operation through the measuring component 3, thereby improving positioning efficiency and reducing working time and labor costs. The measuring component 3, in conjunction with the positioning component 4, avoids the occurrence of inaccurate positioning, thereby improving installation accuracy and ensuring the performance and safety of vehicle maintenance. The clamping component 5 can accommodate more sizes of lifting cylinders, thereby improving the adaptability of the equipment. The transportation component 6 makes the entire positioning fixture easier to move and transport manually, thereby reducing the intensity of manual handling and saving labor costs.
[0051] The above description is merely an embodiment of this utility model and does not limit the patent scope of this utility model. Any equivalent structural or procedural transformations made based on the description and drawings of this utility model, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of this utility model.
Claims
1. A quick positioning fixture for a lifting cylinder of an urban rail transit vehicle, characterized in that, include Base plate; Support frame; the support frame is mounted on the top of the base plate; A measuring component for measuring the position of a hydraulic cylinder, the measuring component being mounted on the support frame; A positioning component for positioning the hydraulic cylinder in conjunction with the measuring component, the positioning component being mounted on the top of the base plate and located directly below the measuring component; A clamping assembly for adapting to lifting cylinders of different sizes, the clamping assembly being mounted on the positioning assembly; A transport component for easy manual movement, the transport component being mounted at the bottom end of the base plate.
2. The quick positioning fixture for the lifting cylinder of an urban rail transit vehicle according to claim 1, characterized in that, The measuring assembly includes a first industrial camera, a second industrial camera, a coordinate system laser emitter, and a base laser emitter. The first industrial camera is mounted on the top of the support frame, the second industrial camera is mounted on one end of the support frame, the coordinate system laser emitter is mounted on the end of the support frame near the second industrial camera, and the base laser emitter is mounted on the clamping assembly.
3. The quick positioning fixture for the lifting cylinder of an urban rail transit vehicle according to claim 1, characterized in that, The positioning component includes a horizontal part for horizontal positioning, a vertical part for vertical positioning, and a three-dimensional part for three-dimensional positioning. The horizontal part is installed on the top of the base plate, the vertical part is installed on the horizontal part, and the three-dimensional part is installed on the vertical part.
4. The quick positioning fixture for the lifting cylinder of an urban rail transit vehicle according to claim 3, characterized in that, The horizontal section includes multiple horizontal lead screws, multiple horizontal motors, and multiple horizontal slides. The multiple horizontal lead screws are all installed on the top of the base plate and are located on both sides of the base plate. The multiple horizontal motors correspond one-to-one with the multiple horizontal lead screws, and the horizontal motors are connected to the output ends of the horizontal lead screws. The multiple horizontal slides correspond one-to-one with the multiple horizontal lead screws, and the horizontal slides are installed on the horizontal lead screws.
5. A quick positioning fixture for a lifting cylinder of an urban rail transit vehicle according to claim 3, characterized in that, The vertical section includes a vertical lead screw, a vertical motor, and a vertical slide. The vertical lead screw is mounted on the horizontal section, the vertical motor is connected to the output end of the vertical lead screw, and the vertical slide is mounted on the vertical lead screw.
6. The quick positioning fixture for the lifting cylinder of an urban rail transit vehicle according to claim 3, characterized in that, The three-dimensional part includes a hydraulic pump and a piston rod. The hydraulic pump is mounted on the vertical part, and the piston rod is connected to the output end of the hydraulic pump.
7. The quick positioning fixture for the lifting cylinder of an urban rail transit vehicle according to claim 1, characterized in that, The clamping assembly includes a connecting rod, multiple positioning jaws, and multiple hydraulic cylinders. The connecting rod is mounted on the positioning assembly, the multiple positioning jaws are respectively mounted on both ends of the connecting rod, and the multiple hydraulic cylinders are all mounted on the positioning assembly. Each of the multiple hydraulic cylinders corresponds one-to-one with a single positioning jaw. The hydraulic cylinder is located directly below the positioning jaw and is connected to the positioning jaw.
8. The quick positioning fixture for the lifting cylinder of an urban rail transit vehicle according to claim 1, characterized in that, The transport assembly includes multiple longitudinal rods, multiple pulley sets, and multiple limiters. The multiple longitudinal rods are all installed at the bottom end of the base plate. The multiple pulley sets correspond one-to-one with the multiple longitudinal rods and are installed at the bottom end of the longitudinal rods. The multiple limiters correspond one-to-one with the multiple pulley sets and are rotatably mounted on the pulley sets.