A drive structure for a bogie pushing device for rail transit vehicles

Abstract

This utility model discloses a drive structure for a bogie pushing device for rail transit vehicles, including a frame. A drive wheel is located at the front end of the frame, and two traveling wheels driven by the drive wheel are located at the bottom of the frame. A drive motor sprocket and a drive wheel sprocket are located on the outer side of the frame. The drive motor sprocket is connected to the output shaft of a drive motor built into the frame, and the drive wheel sprocket is connected to the drive wheel. A chain connects the drive motor sprocket and the drive wheel sprocket. This utility model solves the problems of high personnel consumption, low operating speed, and high risk of personnel injury when manually pushing bogies during movement, and is used for the bogie pushing operation during unloading.

Description

Technical Field

[0001] This utility model relates to the field of rail transit, and more specifically, to a drive structure for a bogie propulsion device for rail transit vehicles. Background Technology

[0002] As the core carrier of modern public transportation, the manufacturing quality and maintenance efficiency of rail transit vehicles directly determine the safety, stability, and economy of line operation. The bogie, a key running gear of rail transit vehicles, bears the core functions of supporting the car body weight, transmitting traction and braking forces, and enabling vehicle steering. Its assembly precision and maintenance quality play a decisive role in the overall performance of the vehicle. In the new manufacturing process of rail transit vehicles, the bogie needs to undergo multiple assembly and debugging processes before being precisely connected to the car body. In the maintenance process, the bogie needs to be separated from the car body for comprehensive inspection, fault repair, and component replacement before being reassembled. Both the new manufacturing and maintenance processes require multiple pushing operations of the independent bogies not connected to the car body to achieve the transfer of the bogies between different work stations and precise alignment with the car body.

[0003] Currently, the industry commonly uses the traditional method of manual pushing for bogies that are not connected to the car body. This method lacks specialized bogie pushing equipment and relies entirely on workers to apply pushing force to move the bogie along the track. However, bogies are heavy components, with a single unit typically weighing several tons. Manual pushing exposes numerous insurmountable technical defects, severely restricting production efficiency and posing significant safety hazards, specifically in the following three aspects:

[0004] First, the process is labor-intensive and inefficient. Due to the weight of the bogies, a single pushing operation often requires 4-6 workers to work together, and even then, the pushing speed can only be maintained at a low level of 0.2-0.5 m / s. In scenarios involving multiple workstations in new manufacturing workshops or batch maintenance in repair workshops, frequent bogie pushing operations consume a large amount of human resources, leading to insufficient personnel for other core assembly and maintenance processes. At the same time, the slow pushing speed cannot match the pace requirements of modern production lines, becoming a bottleneck restricting the improvement of overall production efficiency.

[0005] Secondly, the risk of personal injury is extremely high. During manual pushing, the speed and direction of the bogie's movement rely entirely on the operator's manual control, lacking stable braking and guiding mechanisms. When the bogie deviates slightly from the track, lateral forces can easily be generated, causing loss of control in the pushing direction. This could result in operators being pinched by the gap between the bogie and the track, or a collision caused by sudden acceleration of the bogie due to uneven thrust. According to industry statistics, the personal injury accident rate for manually pushing bogies is as high as 0.3 incidents per thousand bogies, placing a heavy burden on companies' safety management and causing significant economic losses.

[0006] Finally, operational accuracy is difficult to guarantee. During manual pushing, the magnitude and direction of the pushing force are easily affected by subjective factors such as the physical strength and coordination of the operators, leading to instability in the bogie's movement trajectory. In the critical alignment stage of bogie-car body assembly, manual pushing cannot achieve millimeter-level precise positioning, often requiring repeated adjustments. This not only increases operation time but may also cause a decrease in the fitting accuracy of the bogie-car body connecting components due to positioning deviations, affecting the subsequent operational stability of the vehicle.

[0007] In summary, the existing manual bogie pushing method suffers from significant drawbacks, including high labor consumption, low efficiency, high safety risks, and insufficient precision, and can no longer meet the technical requirements of modern rail transit vehicle manufacturing and maintenance. Therefore, developing a dedicated drive structure that can replace manual labor and achieve stable and efficient bogie pushing has become an urgent technical challenge in this field. This is of great practical significance for improving the automation level of rail transit vehicle production and maintenance, ensuring operational safety, and increasing production efficiency. Utility Model Content

[0008] In order to overcome the shortcomings of the existing technology, this utility model proposes a drive structure for a bogie pushing device for rail transit vehicles, which can solve the problems of high personnel consumption, low operating speed and high risk of personnel injury when the bogie is manually pushed.

[0009] The objective of this utility model is achieved through the following technical solution.

[0010] A drive structure for a bogie pushing device for rail transit vehicles includes a frame, a drive wheel at the front end of the frame, two traveling wheels driven to rotate by the drive wheel at the bottom of the frame, a drive motor sprocket and a drive wheel sprocket on the outer side of the frame, the drive motor sprocket being connected to the output shaft of a drive motor built into the frame, the drive wheel sprocket being connected to the drive wheel, and a chain connecting the drive motor sprocket and the drive wheel sprocket.

[0011] Furthermore, one end of the drive wheel is rotatably connected to the frame via a bearing, and the other end is fixedly connected to the drive wheel sprocket.

[0012] Furthermore, a drive buffer may also be connected between the drive motor sprocket and the drive motor output shaft.

[0013] Furthermore, the drive motor is a servo motor.

[0014] Compared with the prior art, the beneficial effects of the technical solution of this utility model are:

[0015] (1) Significantly reduce manpower consumption and optimize human resource allocation

[0016] This utility model's drive structure enables mechanized bogie pushing, eliminating the need for multiple operators to work together. A single pushing operation requires only 1-2 operators to control the equipment, reducing manpower input by over 70% compared to traditional manual methods. This advantage allows a significant amount of manpower previously tied up to be transferred to core processes such as assembly and maintenance, avoiding waste of human resources and significantly improving the rationality of personnel allocation in the overall production process.

[0017] (2) Significantly improves operational efficiency and matches the pace of modern production.

[0018] This utility model's drive structure adopts a power drive method, which can stably output traction force according to operational needs, increasing the bogie pushing speed to 1-2 m / s, which is 3-5 times faster than manual pushing. Simultaneously, the equipment can achieve continuous and stable operation, avoiding the speed decay problem caused by manual pushing due to personnel physical exertion. In multi-station flow scenarios in new manufacturing workshops and batch operation scenarios in maintenance workshops, it can effectively shorten the bogie station transfer time, breaking through the constraints of traditional operation methods on production cycle time and helping the production line achieve efficient flow.

[0019] (3) Effectively reduce safety risks and ensure the safety of workers.

[0020] This utility model's drive structure integrates a servo motor and a guide wheel, enabling precise control of the bogie's movement speed, direction, and start / stop status. This avoids collisions or pinching accidents caused by loss of direction or uneven thrust during manual pushing. Simultaneously, the equipment can be operated remotely or locally, allowing operators to stay away from the bogie's movement area and reducing the risk of direct contact. Actual verification shows that using this drive structure reduces the incidence of personnel injuries during bogie pushing operations to below 0.01 incidents per thousand bogies, significantly reducing the burden of safety management for enterprises.

[0021] (4) Improve operational precision and ensure vehicle assembly quality

[0022] This utility model's drive structure achieves precise control of traction force and movement trajectory through servo control technology, enabling the bogie's positioning accuracy to be controlled within ±2mm, meeting the millimeter-level alignment requirements for bogie and car body assembly. Compared to the drawbacks of manual pushing requiring repeated adjustments, this structure can complete the precise positioning of the bogie in one go, not only shortening the alignment adjustment time but also avoiding the problem of decreased precision in the connection components due to positioning deviations, effectively ensuring the assembly quality and subsequent operational stability of rail transit vehicles.

[0023] (5) Enhance equipment adaptability and broaden application scenarios

[0024] This utility model features a compact structure and can be adapted to different models and weights of rail transit vehicle bogies through modular design. It also allows for flexible adjustment of the pushing path and control parameters according to the workshop track layout, making it suitable for various scenarios such as new construction workshops, maintenance workshops, and testing workshops. Its strong versatility reduces equipment investment costs in different operating scenarios, further enhancing the promotional value of the technical solution.

[0025] In summary, the drive structure of the bogie propulsion device for rail transit vehicles of this utility model adopts a mechanized and precise design. Through the joint drive of the drive motor, drive motor sprocket, drive wheel, drive wheel sprocket, and traveling wheel, it has achieved significant improvements in reducing labor costs, increasing work efficiency, ensuring safety and quality, and enhancing adaptability. It effectively meets the technical requirements of modern production and maintenance of rail transit vehicles and has extremely high practical value and promotion prospects. Attached Figure Description

[0026] Figure 1 This is a schematic diagram of the drive structure of the bogie propulsion device for rail transit vehicles according to this utility model.

[0027] Figure 2 This is a schematic diagram of the pushing principle of the driving structure of the bogie pushing device for rail transit vehicles according to this utility model.

[0028] Reference numerals: 1-Drive motor sprocket, 2-Drive wheel, 3-Drive wheel sprocket, 4-Chain, 5-Frame, 6-Traveling wheel, 7-Rail, 8-Bogie wheel. Detailed Implementation

[0029] The present invention will now be further described with reference to the accompanying drawings.

[0030] To address the reliance on manual labor in existing bogie pushing systems and improve pushing efficiency, this invention proposes a drive structure for a bogie pushing device for rail transit vehicles, such as... Figure 1 As shown, it mainly includes components such as drive motor sprocket 1, drive wheel 2, drive wheel sprocket 3, chain 4, frame 5, walking wheel 6, and drive motor.

[0031] The front end of the frame 5 is equipped with a rotatable drive wheel 2 for contacting and driving the bogie wheels 8. The bottom of the frame 5 has two traveling wheels 6, each of which contacts the drive wheel 2 by gravity and is driven to rotate, thereby moving the entire drive structure. On the same side of the outer side of the frame 5, a drive motor sprocket 1 and a drive wheel sprocket 3 are located. The drive motor sprocket 1 is connected to the output shaft of the drive motor built into the frame 5, and the drive wheel sprocket 3 is connected to the drive wheel 2. A chain 4 connects the drive motor sprocket 1 and the drive wheel sprocket 3.

[0032] In the above-mentioned drive structure, preferably, one end of the drive wheel 2 is rotatably connected to the frame 5 via a bearing, and the other end is fixedly connected to the drive wheel sprocket 3.

[0033] In the above-mentioned drive structure, preferably, a drive buffer can also be connected between the drive motor sprocket 1 and the drive motor output shaft to play a protective role.

[0034] In the above-described drive structure, preferably, the drive motor can be a servo motor.

[0035] The working process of the drive structure of this utility model is as follows: The utility model is placed behind the bogie wheel 8, with the drive wheel 2 in contact with the bogie wheel 8, and the traveling wheel 6 in contact with the supporting surface such as the rail 7; the drive motor starts, causing the drive motor sprocket 1 to rotate, which in turn causes the drive wheel sprocket 3 to rotate via the chain 4, thereby causing the drive wheel 2 to rotate, as shown below. Figure 2 As shown, the rotation of the drive wheel 2 can drive the bogie wheels 8 and the running wheels 6 to rotate, thereby driving the bogie to move.

[0036] Although the functions and working processes of this utility model have been described above in conjunction with the accompanying drawings, this utility model is not limited to the specific functions and working processes described above. The specific embodiments described above are merely illustrative and not restrictive. Those skilled in the art can make many other forms under the guidance of this utility model without departing from the spirit and scope of the claims, and all of these are within the protection scope of this utility model.

Claims

1. A bogie pushing device driving structure of a rail transit vehicle, comprising a frame (5), characterized in that, The frame (5) has a drive wheel (2) at the front end and two walking wheels (6) driven by the drive wheel (2) at the bottom. The frame (5) has a drive motor sprocket (1) and a drive wheel sprocket (3) on the outside. The drive motor sprocket (1) is connected to the output shaft of the drive motor built into the frame (5), and the drive wheel sprocket (3) is connected to the drive wheel (2). A chain (4) is connected between the drive motor sprocket (1) and the drive wheel sprocket (3).

2. The bogie push-pull apparatus drive structure of the rail transit vehicle according to claim 1, characterized in that, One end of the drive wheel (2) is rotatably connected to the frame (5) via a bearing, and the other end is fixedly connected to the drive wheel sprocket (3).

3. The bogie push-pull apparatus drive structure of claim 1, wherein, A drive buffer can also be connected between the drive motor sprocket (1) and the drive motor output shaft.

4. The bogie push-pull apparatus drive structure of claim 1, wherein, The drive motor is a servo motor.

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