A power bogie applied to a metallurgical vehicle

Abstract

The utility model relates to metallurgical transportation equipment technical field, especially a kind of power bogie applied to metallurgical vehicle.The bogie includes framework assembly, wheel pair assembly, driving device, primary suspension device and brake device.Wheel pair assembly contains axle, wheel and axle box assembly, bearing is loaded in axle box assembly, axle end portion is provided with bearing;Driving device is arranged in pairs in the outside of axle box assembly, its shell is fixedly connected with axle box body, output end is fixedly connected with axle end portion;Primary suspension device is installed in the bottom of framework, and suspension end is connected axle box body;Brake device is installed in framework, and brake execution component corresponds wheel.The driving device and framework assembly are completely decoupled in the bogie, cancel traditional torsion bar connection, shorten wheel pair wheelbase, avoid driving device to limit wheel pair degree of freedom, wheel pair can be flexibly adapted track unevenness, improve small radius curve passing capacity, reduce wheel-rail impact load and wear, reduce metallurgical workshop track maintenance frequency and cost.

Description

Technical Field

[0001] This utility model relates to the field of metallurgical transportation equipment technology, and in particular to a power bogie used in metallurgical vehicles. Background Technology

[0002] As the core load-bearing and running component of railway vehicles, the bogie bears the crucial functions of supporting the weight of the car body, guiding the vehicle, buffering vibration and impact, and ensuring braking safety. Its performance directly determines the stability, safety, and economy of vehicle operation, and is particularly important in special railway transportation equipment such as metallurgical vehicles. Currently, the powered bogies used in metallurgical vehicles generally adopt a traditional design scheme that integrates the drive unit and the frame. While this design offers certain advantages in terms of structural compactness, the rigid coupling between its drive unit and frame severely restricts the wheelset's degrees of freedom, making it impossible to flexibly adjust its posture according to track conditions. Simultaneously, this limited wheelset freedom directly exacerbates the dynamic interaction between the wheel and rail, increasing wheel-rail wear and placing an additional burden on track maintenance. Due to the structural coupling, the wheelset struggles to achieve ideal radial adjustment when traversing curved tracks, resulting in poor curve-passing performance, limited speed, and reduced operational stability. Furthermore, the integrated structure causes interference between the drive unit and frame components, requiring the disassembly of multiple related parts during maintenance—a cumbersome, time-consuming, and labor-intensive process with extremely poor maintenance convenience, severely impacting the operational efficiency of metallurgical vehicles. In recent years, with the expansion of production scale and the improvement of logistics efficiency requirements in the metallurgical industry, metallurgical vehicle railway transportation is developing rapidly towards self-driving, high efficiency and long service life, which puts forward more stringent requirements on the dynamic performance and maintainability of power bogies. Utility Model Content

[0003] In order to solve the technical problems of limited wheelset degrees of freedom, poor curve passing performance and inconvenient maintenance of existing automatic bogies for metallurgical vehicles, this utility model provides a power bogie for metallurgical vehicles.

[0004] Therefore, the present invention provides the following technical solution: A power bogie for metallurgical vehicles includes a frame assembly, wheelset assembly, drive unit, primary suspension, and braking device. The wheelset assembly includes an axle, wheels, and axle box assemblies. The wheels are fixedly mounted in pairs on the axle. Axle box assemblies are arranged in pairs at both ends of the axle. Each axle box assembly includes a housing and bearings. The bearings are installed inside the housing, and the ends of the axles pass through the bearings of the corresponding axle box assemblies. Drive units are arranged in pairs outside the axle box assemblies. The housing of the drive unit is fixedly connected to the housing of the axle box assembly, and the output end of the drive unit is fixedly connected to the axle end that passes through the bearing of the axle box assembly. The primary suspension is installed at the bottom of the frame assembly, and the suspension end of the primary suspension is fixedly connected to the housing of the axle box assembly. The braking device is installed on the frame assembly, and the braking actuators of the braking device are correspondingly arranged with the wheels of the wheelset assembly.

[0005] Furthermore, the drive device includes a motor and a reducer. The motor housing is fixedly connected to the reducer housing via a flange, and the motor output end is fixedly connected to the reducer input end. The reducer housing, on the side away from the motor, is fixedly connected to the axle box assembly housing via a flange, and the reducer output end is fixedly connected to the end of the axle passing through the axle box assembly bearing. Furthermore, the reducer output end is a hollow shaft structure, the end of the axle is inserted into the hollow shaft of the reducer, and the axle and reducer are connected by a flat key. Furthermore, the motor is a permanent magnet synchronous motor, and the reducer is a planetary gear reducer.

[0006] Furthermore, the primary suspension device includes a suspension housing, a helical steel spring, and an auxiliary helical steel spring. The suspension housing is installed at the bottom of the frame assembly. The top ends of both the helical steel spring and the auxiliary helical steel spring are fixedly connected to the inner wall of the top of the suspension housing. The auxiliary helical steel spring is nested inside the helical steel spring. The bottom ends of both the helical steel spring and the auxiliary helical steel spring penetrate the suspension housing and are fixedly connected to the housing of the axle box assembly through connectors. Furthermore, the frame assembly includes two side beams and one cross beam. Both the side beams and the cross beam are box-section structures. The two side beams are parallel to each other and are fixedly connected to both ends of the cross beam. A primary suspension device is installed at the bottom of the side beams. Furthermore, the braking device is a unit floating brake shoe braking device, and the brake shoes of the braking device are correspondingly arranged with the wheel tread of the wheelset assembly.

[0007] Advantages and positive effects of this utility model: In this application, the drive unit is located on the outside of the wheelset assembly and does not contact the frame assembly, thus completely decoupling the drive unit from the frame assembly. This eliminates the traditional torsion bar connection, shortens the wheelbase between the two wheels in the wheelset assembly, avoids the restriction of the wheelset's degree of freedom by the drive unit, and allows the wheelset to flexibly adjust its posture according to track irregularities. This improves the bogie's ability to pass through small-radius curves, reduces the impact load between the wheel and rail, effectively reduces the wheel and rail wear rate, extends the service life of the wheels and rails, and reduces the frequency and cost of track maintenance in metallurgical workshops.

[0008] The drive unit is directly connected to the wheelset through the axle box assembly. The vibration of the drive system is transmitted to the frame only through the wheelset and primary suspension. Compared with the traditional integrated design, the vibration transmission efficiency is reduced and the vehicle body vibration acceleration is significantly reduced. This not only improves the comfort of the driver and passengers, but also protects the precision equipment on the metallurgical vehicle from vibration damage. Attached Figure Description

[0009] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0010] Figure 1 This utility model provides a front view of a power bogie used in metallurgical vehicles.

[0011] Figure 2 A side view of a power bogie used in metallurgical vehicles, provided by this utility model.

[0012] Figure 3 This utility model provides a top view of a power bogie used in metallurgical vehicles.

[0013] Figure 4 This utility model provides an assembly drawing of wheelset assembly and drive unit for a power bogie used in metallurgical vehicles.

[0014] Figure 5 This utility model provides an assembly drawing of the primary suspension device for a power bogie used in metallurgical vehicles.

[0015] In the diagram: 1. Frame assembly; 11. Side beam; 12. Crossbeam; 2. Wheelset assembly; 21. Axle; 22. Wheel; 23. Axle box assembly; 231. Box; 232. Bearing; 3. Drive unit; 31. Motor; 32. Reducer; 33. Key; 4. Primary suspension system; 41. Helical steel spring; 42. Auxiliary helical steel spring; 43. Suspension housing; 44. Connecting parts; 5. Braking system. Detailed Implementation

[0016] To enable those skilled in the art to better understand the present invention, the technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort should fall within the protection scope of the present invention.

[0017] This utility model provides a power bogie for use in metallurgical vehicles, such as... Figure 1-2 As shown, it includes a frame assembly 1, a wheelset assembly 2, a drive unit 3, a primary suspension system 4, and a braking system 5.

[0018] like Figure 1 As shown, the frame assembly 1 includes two side beams 11 and one crossbeam 12. Both the side beams 11 and the crossbeam 12 are box-section structures, which have excellent bending and torsional stiffness, ensuring the structural integrity and stability of the bogie under complex loads. The two side beams 11 are parallel to each other and are fixedly connected to both ends of the crossbeam 12, respectively. The primary suspension device 4 is installed at the bottom of the side beams 11.

[0019] like Figures 3-4 As shown, the wheelset assembly 2 includes an axle 21, a wheel 22, and an axle box assembly 23. The wheels 22 are fixedly mounted on the axle 21 in pairs. The axle box assemblies 23 are arranged in pairs at both ends of the axle 21. The axle box assembly 23 includes a housing 231 and a bearing 232. The bearing 232 is installed inside the housing 231, and the end of the axle 21 passes through the bearing 232 of the corresponding axle box assembly 23.

[0020] The drive units 3 are arranged in pairs on the outside of the axle box assembly 23. Located outside the wheels, they are directly connected to the axle box assembly via flanges, eliminating the traditional torsion bar connection and achieving complete decoupling between the drive units and the frame, further shortening the wheelbase. This design prevents the drive units from participating in the frame's vibration, reducing restrictions on the wheelset's degrees of freedom, while the shorter wheelbase improves the bogie's ability to navigate small-radius curves. The drive unit 3 includes a motor 31 and a reducer 32. The motor 31 is a permanent magnet synchronous motor, characterized by high power density and high efficiency; the reducer 32 is a planetary gear reducer, with a compact structure and large transmission ratio, facilitating miniaturization and weight reduction of the drive system. The housing of the motor 31 is fixedly connected to the housing of the reducer 32 via flanges, and the output end of the motor 31 is fixedly connected to the input end of the reducer 32. The side of the reducer 32 housing away from the motor 31 is fixedly connected to the housing 231 of the axle box assembly 23 via flanges, and the output end of the reducer 32 is fixedly connected to the end of the axle 21 that passes through the bearing 232 of the axle box assembly 23. The output end of the reducer 32 is a hollow shaft structure. The end of the axle 21 is inserted into the hollow shaft of the reducer 32, and the axle 21 and the reducer 32 are connected by a flat key 33 to achieve circumferential fixation and torque transmission. The drive unit 3 is independent of the frame assembly 1 and is connected to the wheelset only through the axle 21 and the axle box assembly 23, simplifying the structural relationship. The drive unit adopts an integrated design, with the motor and reducer forming a complete modular unit, which is convenient for installation and maintenance. The drive unit can be disassembled and reassembled as a whole, reducing maintenance time and costs. Traction and braking forces are directly transmitted to the wheelset through the axle and axle box assembly, without passing through the frame assembly. The frame only bears the weight of the vehicle body and part of the vibration load, optimizing the stress state of the frame and extending its service life.

[0021] like Figure 3 , Figure 5 As shown, the primary suspension device 4 includes a suspension housing 43, a helical steel spring 41, and an auxiliary helical steel spring 42. The suspension housing 43 is installed at the bottom of the side beam 11 of the frame assembly 1. The top ends of both the helical steel spring 41 and the auxiliary helical steel spring 42 are fixedly connected to the inner wall of the top of the suspension housing 43, and the two have different diameters. The auxiliary helical steel spring 42 is nested inside the helical steel spring 41. This helical steel spring 42 adopts a two-stage stiffness design, which can automatically adjust its elastic characteristics according to load changes. It can ensure a flexible buffering effect when the vehicle is empty, and provide sufficient support stiffness when the vehicle is loaded, thus achieving good vibration reduction under various operating conditions. The bottom ends of the helical steel spring 41 and the auxiliary helical steel spring 42 penetrate the suspension housing 43 and are both fixedly connected to the housing 231 of the axle box assembly 23 through the connector 44. There is no mechanical connection between the drive device 3 and the frame assembly 1, achieving complete structural decoupling, thereby effectively isolating the vibration of the drive system from being transmitted to the frame and improving operational stability.

[0022] like Figure 2 As shown, the braking device 5 is mounted on the frame assembly 1, and the braking actuation components of the braking device 5 are correspondingly arranged with respect to the wheels 22 of the wheelset assembly 2. The braking device 5 is a unit floating brake shoe braking device, and the brake shoes of the braking device 5 are correspondingly arranged with respect to the wheel tread surface of the wheelset assembly 2. The brake shoes are made of high wear-resistant synthetic material, with excellent heat resistance and wear resistance; at the same time, the brake shoes are designed with a floating structure, which can ensure that the contact pressure between the brake shoes and the wheel tread surface is evenly distributed during braking, improving braking efficiency and reliability.

[0023] In the bogie of this application, after the drive unit is decoupled from the frame, the motion and positioning stiffness of the wheelset are not restricted, and the wheelset can better adapt to track irregularities and reduce wheel-rail dynamic action.

[0024] In the bogie of this application, the drive unit 3 is only connected to the axle box assembly 23 and the axle 21 through the reducer 32, and has no mechanical connection with the frame 1. The drive unit adjusts synchronously with the attitude of the wheelset. The wheelset can achieve radial adjustment when running on a curve, reducing the wheel-rail angle of attack and lateral force, improving the curve passing capacity, and is particularly suitable for small radius curve lines.

[0025] In the bogie of this application, the external drive unit and lightweight design significantly reduce the unsprung mass, thereby reducing the dynamic load on the wheel and rail and extending the service life of the track and vehicle components.

[0026] In the bogie of this application, the drive unit is modularly designed and can be directly disassembled and installed from the outside of the wheel without disassembling the frame and other components, reducing maintenance time by more than 50%.

[0027] In the bogie of this application, traction and braking forces are directly transmitted to the wheelsets without passing through the frame. The frame mainly bears the vertical load, which improves the stress state and extends the fatigue life.

[0028] The bogie in this application can be adapted to different track gauges and axle load requirements by adjusting the primary suspension parameters, thus having wide applicability.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of this utility model, and are not intended to limit it. Although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some or all of the technical features therein. Such modifications or substitutions do not cause the essence of the corresponding technical solutions to deviate from the scope of the technical solutions of the embodiments of this utility model.

Claims

1. A powered bogie for use in metallurgical vehicles, characterized in that, The system includes a frame assembly (1), a wheelset assembly (2), a drive unit (3), a primary suspension system (4), and a braking system (5). The wheelset assembly (2) includes an axle (21), wheels (22), and an axle box assembly (23). The wheels (22) are fixedly mounted on the axle (21) in pairs. The axle box assemblies (23) are arranged in pairs at both ends of the axle (21). The axle box assembly (23) includes a housing (231) and a bearing (232). The bearing (232) is installed inside the housing (231), and the end of the axle (21) passes through the bearing (232) of the corresponding axle box assembly (23). The drive unit... The drive unit (3) is arranged in pairs on the outside of the axle box assembly (23). The housing of the drive unit (3) is fixedly connected to the housing (231) of the axle box assembly (23). The output end of the drive unit (3) is fixedly connected to the end of the axle (21) that passes through the bearing (232) of the axle box assembly (23). The primary suspension device (4) is installed at the bottom of the frame assembly (1). The suspension end of the primary suspension device (4) is fixedly connected to the housing (231) of the axle box assembly (23). The braking device (5) is installed on the frame assembly (1), and the braking actuator of the braking device (5) is correspondingly set to the wheel (22) of the wheelset assembly (2).

2. The power bogie for metallurgical vehicles according to claim 1, characterized in that, The drive device (3) includes a motor (31) and a reducer (32). The housing of the motor (31) is fixedly connected to the housing of the reducer (32) through a flange. The output end of the motor (31) is fixedly connected to the input end of the reducer (32). The side of the housing of the reducer (32) away from the motor (31) is fixedly connected to the housing (231) of the axle box assembly (23) through a flange. The output end of the reducer (32) is fixedly connected to the end of the axle (21) that passes through the bearing (232) of the axle box assembly (23).

3. A power bogie for metallurgical vehicles according to claim 2, characterized in that, The output end of the reducer (32) is a hollow shaft structure. The end of the axle (21) is inserted into the hollow shaft of the reducer (32), and the axle (21) and the reducer (32) are connected by a flat key (33).

4. A power bogie for metallurgical vehicles according to claim 2, characterized in that, The motor (31) is a permanent magnet synchronous motor, and the reducer (32) is a planetary gear reducer.

5. A power bogie for metallurgical vehicles according to claim 1, characterized in that, The primary suspension device (4) includes a suspension shell (43), a helical steel spring (41), and an auxiliary helical steel spring (42). The suspension shell (43) is installed at the bottom of the frame assembly (1). The top ends of the helical steel spring (41) and the auxiliary helical steel spring (42) are fixedly connected to the inner wall of the top of the suspension shell (43). The auxiliary helical steel spring (42) is nested inside the helical steel spring (41). The bottom ends of the helical steel spring (41) and the auxiliary helical steel spring (42) penetrate the suspension shell (43) and are fixedly connected to the housing (231) of the axle box assembly (23) through the connector (44).

6. A power bogie for metallurgical vehicles according to claim 1, characterized in that, The frame assembly (1) includes two side beams (11) and one cross beam (12). Both the side beams (11) and the cross beam (12) are box-shaped cross-section structures. The two side beams (11) are parallel to each other and are fixedly connected to both ends of the cross beam (12). A suspension device (4) is installed at the bottom of the side beams (11).

7. A power bogie for metallurgical vehicles according to claim 1, characterized in that, The braking device (5) is a unit floating brake shoe braking device, and the brake shoes of the braking device (5) are correspondingly arranged with the wheel tread of the wheelset assembly (2).

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