Auxiliary device for mounting equipment under rail transit vehicle
By using an auxiliary device that combines a mobile base and a laser projector, the problem of inaccurate positioning during the installation of equipment under rail transit vehicles was solved, enabling rapid and accurate equipment installation and reducing costs and resource waste.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-25
- Publication Date
- 2026-04-07
AI Technical Summary
Inaccurate installation and positioning of equipment under rail transit vehicles leads to material waste and operational risks. It also requires multiple people to work together, is time-consuming, and is difficult to meet design requirements.
An auxiliary device combining a mobile base, a lifting mechanism, and a laser projector is used. The laser is aligned with the equipment mounting hole, and the hydraulic control system is used to lift and fix the equipment, achieving rapid and accurate positioning.
It improves installation convenience, reduces the number of operators, lowers production and time costs, and ensures the accuracy and consistency of equipment installation.
Smart Images

Figure CN224091555U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of auxiliary installation technology for undercarriage equipment of rail vehicles, and in particular to an installation positioning and auxiliary measurement device for undercarriage equipment of rail transit vehicles. Background Technology
[0002] Various devices are installed on the underside of rail transit vehicles. During the vehicle design process, the R&D department specifies the corresponding installation locations based on the function of the equipment and the safety of vehicle operation. Inaccurate positioning during installation can affect the subsequent installation of lines and pipelines, causing problems such as insufficient length of pre-installed cables or pipes, requiring material replacement or cutting, resulting in material waste and significantly increasing manufacturing costs. Insufficient line or pipeline length can increase the risk of cables falling off or pipelines becoming loose and leaking during vehicle operation. Therefore, the accuracy of the positioning of under-vehicle equipment is particularly important. The size and specifications of under-vehicle equipment vary greatly. Before installation, construction personnel must mark the positioning according to the drawings. The special installation position of the equipment, which is suspended under the vehicle, makes the installation work more difficult. During installation, the equipment is moved to the installation area, lifted to match the mounting holes, and then tightened with bolts. At least three workers are needed to complete the positioning and installation of one piece of equipment, and the process is time-consuming. Utility Model Content
[0003] This utility model aims to solve at least one of the technical problems existing in the prior art. To this end, this utility model proposes an under-vehicle equipment installation auxiliary device that can improve installation convenience, reduce production costs, reduce operators, increase installation speed, and improve equipment positioning accuracy.
[0004] This utility model discloses an auxiliary device for installing equipment under rail transit vehicles, which includes a movable base, and the movable base is connected to a support platform through a lifting device;
[0005] The movable base includes a frame, and the bottom of the frame is provided with movable wheels;
[0006] The lifting device includes a folding lifting bracket, one end of the bottom of the folding lifting bracket is fixed to one side of the frame, and the other end is slidably disposed in a groove in the frame. The folding lifting bracket is provided with a telescopic rod for controlling the lifting of the folding lifting bracket.
[0007] The support platform has sliding long guide posts on both sides of its long side. Two horizontal sliding short guide posts are inserted and installed on the sliding long guide posts. A laser projector is movably sleeved on the two horizontal sliding short guide posts. Threaded holes are evenly distributed on the surface of the support platform.
[0008] According to some embodiments of the present invention, the movable wheel includes two omnidirectional wheels and two directional wheels.
[0009] According to some embodiments of the present invention, the universal wheel is provided with a braking device.
[0010] According to some embodiments of this utility model, the telescopic rod is a hydraulic rod and is controlled by a hydraulic controller.
[0011] According to some embodiments of the present invention, the hydraulic controller is provided with a foot pedal control device.
[0012] According to some embodiments of this utility model, the laser projector is provided with an angle adjustment knob for angle adjustment.
[0013] According to some embodiments of this utility model, the laser projector is provided with a position fixing knob for limit control.
[0014] According to some embodiments of this utility model, the upper part of the lifting device is connected to the support platform by bolts.
[0015] According to some embodiments of the present invention, the threaded hole matrix is distributed on the surface of the support platform.
[0016] According to some embodiments of the present invention, the frame is provided with handles.
[0017] This utility model has at least the following beneficial effects: When undercarriage equipment installation is required, simply place the equipment on the support platform, and operate the handle to move the equipment to the installation position; before installation, simply turn on the laser projector and move it through the long and short guide columns to align it with the center of the equipment mounting hole. The light passes through the mounting hole and projects onto the undercarriage plane, aligning with the center of the hanging bolt. After operating the hydraulic controller to raise the equipment, the mounting hole can directly pass through the bolt; the surface of the support platform has evenly distributed threaded holes. When the equipment is irregularly shaped and cannot be placed stably, a support frame can be installed on any of the threaded holes to fix the irregularly shaped equipment and complete the installation. This utility model has good versatility and can be applied to the auxiliary device for the installation and positioning of undercarriage equipment in various rail transit vehicles such as A-type subways, B-type subways, L-type subways, and intercity EMUs. It can be used in different vehicle models and different operating environments. This product can effectively avoid the problems of inaccurate positioning, long time consumption, and a large number of operators during previous equipment installations, which led to equipment installation not meeting design requirements and resulting in a series of rework and repair operations. It effectively reduces the manufacturing costs, time costs, and resource waste of enterprises.
[0018] Additional aspects and advantages of this invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description
[0019] The present invention will be further described below with reference to the accompanying drawings and embodiments, wherein:
[0020] Figure 1 This is a schematic diagram of the structure of this utility model;
[0021] Figure 2 This is a schematic diagram of the structure of this utility model from another perspective. Detailed Implementation
[0022] The embodiments of this utility model are described in detail below. Examples of these embodiments are shown in the accompanying drawings, wherein the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain this utility model, and should not be construed as limiting this utility model.
[0023] In the description of this utility model, it should be understood that the orientation descriptions, such as up, down, etc., are based on the orientation or positional relationship shown in the drawings. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model.
[0024] In the description of this utility model, "multiple" refers to two or more. The use of "first" and "second" is for distinguishing technical features only and should not be construed as indicating or implying relative importance, or implicitly indicating the number of technical features or their sequential relationship.
[0025] In the description of this utility model, unless otherwise explicitly defined, terms such as "setting," "installation," and "connection" should be interpreted broadly, and those skilled in the art can reasonably determine the specific meaning of the above terms in this utility model in conjunction with the specific content of the technical solution.
[0026] Reference Figure 1 , Figure 2 An auxiliary device for installing undercarriage equipment of a rail transit vehicle includes a movable base 1, which is connected to a support platform 3 via a lifting device 2. For ease of installation, the upper part of the lifting device 2 is bolted to the support platform 3. The movable base 1 includes a frame 11, with movable wheels 12 at its bottom. Each movable wheel 12 includes two omnidirectional wheels and two directional wheels, which can be stopped using their built-in brakes. Additionally, a handle 13 for assisting movement is provided on the frame 11.
[0027] The lifting device 2 includes a folding lifting bracket 21. One end of the bottom of the folding lifting bracket 21 is fixed to one side of the frame 11, and the other end is slidably disposed in a groove 111 within the frame 11. The folding lifting bracket 21 is provided with a telescopic rod 22 for controlling its lifting and lowering. The telescopic rod 22 is a hydraulic rod, controlled by a hydraulic controller 23. The pressure generated by the hydraulic controller 23 is transmitted to the hydraulic rod through a hose, controlling the extension or retraction of the hydraulic rod, thereby controlling the lifting and lowering of the support platform 3. For ease of control, the hydraulic controller 23 is equipped with a foot pedal control device 231.
[0028] The support platform 3 has sliding long guide posts 31 on both sides of its long side. Two horizontal sliding short guide posts 32 are inserted and installed on the sliding long guide posts 31. A laser projector 33 is movably sleeved on the two horizontal sliding short guide posts 32. Threaded holes 34 are evenly distributed on the surface of the support platform 3. The threaded holes 34 are M6 internal thread holes. The threaded holes 34 are distributed in a matrix on the surface of the support platform 3, thereby realizing the installation of equipment auxiliary brackets on the platform.
[0029] The laser projector 33 is equipped with an angle adjustment knob for angle adjustment. This knob controls the light emission angle of the laser projector 33, allowing it to be adjusted to a vertical or horizontal position, or to emit light at any angle. For ease of use, the laser projector 33 can emit a straight point light or a cross-shaped light beam. Additionally, the laser projector 33 is equipped with a position fixing knob for limit control.
[0030] When undercarriage equipment installation is required, simply place the equipment on the support platform 3, and operate the handle 13 to move the equipment to the installation position. Before installation, simply turn on the laser projector 33 and move it along the long and short guide columns 31 and 32 to align it with the center of the equipment mounting hole. The light passes through the mounting hole and projects onto the undercarriage plane, aligning with the center of the hanging bolt. After operating the hydraulic controller 23 to raise the equipment, the mounting hole can directly pass through the bolt. The surface of the support platform 3 is evenly distributed with threaded holes 34. When the equipment is irregularly shaped and cannot be placed stably, a support frame can be installed on any of the threaded holes 34 to fix the irregularly shaped equipment and complete the installation. This utility model has good versatility and can be applied to the auxiliary device for the installation and positioning of undercarriage equipment in various rail transit vehicles such as A-type subways, B-type subways, L-type subways, and intercity EMUs. It can be used in different vehicle models and different operating environments. This product can effectively avoid the problems of inaccurate positioning, long time consumption, and a large number of operators during previous equipment installations, which led to equipment installation not meeting design requirements and a series of rework operations. It effectively reduces enterprises' manufacturing costs, time costs, and resource waste.
[0031] The preferred embodiments of this utility model have been described in detail above. It should be understood that those skilled in the art can make numerous modifications and variations based on the concept of this utility model without creative effort. Therefore, all technical solutions that can be obtained by those skilled in the art based on the concept of this utility model through logical analysis, reasoning, or limited experimentation on the basis of existing technology should be within the scope of protection defined by the claims.
Claims
1. An auxiliary device for installing undercarriage equipment of a rail transit vehicle, characterized in that, It includes a movable base (1), which is connected to a support platform (3) via a lifting device (2); The movable base (1) includes a frame (11), and the bottom of the frame (11) is provided with movable wheels (12); The lifting device (2) includes a folding lifting bracket (21). One end of the bottom of the folding lifting bracket (21) is fixed to one side of the frame (11), and the other end is slidably disposed in the slide groove (111) in the frame (11). The folding lifting bracket (21) is provided with a telescopic rod (22) for controlling the lifting of the folding lifting bracket (21). The support platform (3) has sliding long guide posts (31) on both sides of its long side. Two horizontal sliding short guide posts (32) are inserted and installed on the sliding long guide posts (31). A laser projector (33) is movably sleeved on the two horizontal sliding short guide posts (32). Threaded holes (34) are evenly distributed on the surface of the support platform (3).
2. The auxiliary device for installing undercarriage equipment of a rail transit vehicle according to claim 1, characterized in that, The movable wheel (12) includes two omnidirectional wheels and two directional wheels.
3. The auxiliary device for installing undercarriage equipment of a rail transit vehicle according to claim 2, characterized in that, The omnidirectional wheel is equipped with a braking device.
4. The auxiliary device for installing undercarriage equipment of a rail transit vehicle according to claim 1, characterized in that, The telescopic rod (22) is a hydraulic rod and is controlled by a hydraulic controller (23).
5. The auxiliary device for installing undercarriage equipment of a rail transit vehicle according to claim 4, characterized in that, The hydraulic controller (23) is equipped with a foot pedal control device (231).
6. The auxiliary device for installing undercarriage equipment of a rail transit vehicle according to claim 1, characterized in that, The laser projector (33) is equipped with an angle adjustment knob for angle adjustment.
7. The auxiliary device for installing undercarriage equipment of a rail transit vehicle according to claim 1, characterized in that, The laser projector (33) is equipped with a position fixing knob for limit control.
8. The auxiliary device for installing undercarriage equipment of a rail transit vehicle according to claim 1, characterized in that, The upper part of the lifting device (2) is connected to the support platform (3) by bolts.
9. The auxiliary device for installing undercarriage equipment of a rail transit vehicle according to claim 1, characterized in that, The threaded holes (34) are distributed in a matrix on the surface of the support platform (3).
10. An auxiliary device for installing undercarriage equipment of a rail transit vehicle according to claim 1, characterized in that, The frame (11) is provided with a handle (13).