Single-axle bogie suitable for shunting locomotive

Abstract

The utility model discloses a single-axle bogie suitable for a shunting locomotive. The single-axle bogie comprises a wheel set assembly, an axle box body, a connecting seat, a driving device, a vibration reduction device, a traction device, a suspension device and a brake device, the wheel set assembly comprises an axle and wheels, and the driving device is arranged in the middle of the wheels and used for driving the axle to rotate; the axle box bodies are rotationally connected with the axle and arranged on the two sides of the outer portion of the wheel, and meanwhile the axle box bodies are further connected with a vehicle body through the traction device; the bottom of the connecting base abuts against the top of the axle box body, the top of the connecting base is connected with a vehicle body by arranging the suspension device, and the top of the connecting base is further provided with the damping device connected with the vehicle body; and the braking device is hung at the bottom of the vehicle body and is used for braking the wheels. By simplifying a framework, a traction device, a suspension device and a brake device, the mass of the bogie is reduced, and the dynamic performance of a shunting locomotive is facilitated.

Description

TECHNICAL FIELD

[0001] The utility model belongs to the rail transit vehicle technical field, especially suitable for a single axle bogie for shunting locomotive. BACKGROUND

[0002] The shunting locomotive is a kind of locomotive for deploying railway vehicles, and is usually used for the marshalling traction operation of internal vehicles. Its main function is to move the carriages of the train from one track to another, so as to classify and combine the railway vehicles. Therefore, the shunting locomotive needs to have relatively strong traction and low-speed performance to meet the functional needs of shunting.

[0003] By reducing the weight of the bogie, the traction of the vehicle can be effectively improved, the wear and tear on the track can be reduced, and the energy consumption can be reduced. The frictional resistance of the locomotive on the railway can be reduced, thereby reducing energy consumption and improving the acceleration performance and running speed of the locomotive.

[0004] The existing shunting locomotive often uses two-axle or three-axle bogies, which have a large self-weight, more than one-third of the total weight of the shunting locomotive. Even if a single-axle bogie is used, the self-weight is increased due to the presence of secondary suspension devices and frames, which occupy a large weight.

[0005] Therefore, there is an urgent need for a bogie that can effectively reduce its own weight to improve the running efficiency of the shunting locomotive. SUMMARY

[0006] To solve the problem of the large self-weight of the bogie of the shunting locomotive in the prior art, which makes it difficult to improve the running efficiency, the utility model provides a single-axle bogie for shunting locomotive, which cancels the frame and secondary suspension device, and directly connects the wheel set and the vehicle body through the connecting seat on the axle box, greatly reducing the unsprung mass and the inter-spring mass of the bogie.

[0007] The utility model provides a single-axle bogie for shunting locomotive, and the specific technical scheme is as follows, comprising: wheel set assembly, axle box, connecting seat, driving device, damping device, traction device, suspension device and brake device.

[0008] The wheel set assembly comprises an axle and wheels arranged at both ends of the axle, and the driving device is arranged on the outer surface of the axle and between the wheels to drive the rotation of the axle.

[0009] The axle box is rotationally connected with the axle and arranged at the outer sides of the wheels to keep balance and provide a mounting platform for the connecting seat, and the axle box is also connected with the vehicle body through the traction device.

[0010] The bottom of the connecting seat is in abutment with the top of the axle box body, the top of the connecting seat is connected with the vehicle body through the suspension device, and the top of the connecting seat is further provided with the damping device connected with the vehicle body.

[0011] The braking device is hung on the bottom of the vehicle body and brakes the wheels.

[0012] Preferably, the driving device comprises a traction motor and a shaft box.

[0013] The traction motor is connected with the outer surface of the axle through the shaft box.

[0014] The traction motor is detachably connected with the vehicle body.

[0015] Preferably, the driving device further comprises a motor hanger, one end of the motor hanger is connected with the vehicle body, and the other end is connected with the traction motor.

[0016] Preferably, the traction device is a shaft box traction rod, one end of the shaft box traction rod is connected with the axle box body, and the other end is connected with the vehicle body.

[0017] Preferably, the suspension device is a helical steel spring, and the suspension devices are symmetrically distributed at both ends of the connecting seat.

[0018] Preferably, the upper and lower end faces of the connecting seat are provided with cylindrical structures, the upper end cylinder of the connecting seat is clamped with the suspension device, and the lower end cylinder of the connecting seat is clamped with the axle box body.

[0019] Preferably, the damping device specifically comprises a vertical damper and a horizontal damper.

[0020] One end of the vertical damper is in abutment with the top of the connecting seat, and the other end is connected with the vehicle body.

[0021] One end of the horizontal damper is in abutment with the side of the connecting seat close to the wheel, and the other end is connected with the vehicle body.

[0022] Preferably, the horizontal damper is arranged beside the vertical damper.

[0023] Preferably, the braking device is a tread brake, which is hung on both sides of the wheel for clamping braking.

[0024] Preferably, the driving device, the damping device, the traction device, and the braking device are connected with the vehicle body through bolts, and the suspension device is clamped with the vehicle body.

[0025] Compared with existing technologies, the beneficial effects of this technical solution are as follows: through a completely new structural design, while meeting the requirements of locomotive operation safety and smoothness, the frame, traction device, suspension device and basic braking device are simplified, the unsprung mass and intersprung mass of the bogie are greatly reduced, thereby effectively reducing the wheel-rail action force, which is beneficial to the dynamic performance of shunting locomotives, helps to improve the service life of rails and wheels, reduces the total life cycle cost of locomotives, and also helps locomotives pass through small curves. Attached Figure Description

[0026] To more clearly illustrate the technical solutions in the embodiments of this application 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 only some embodiments recorded in this application. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0027] Figure 1 This is a front view of a single-axle bogie suitable for a shunting locomotive in a specific embodiment;

[0028] Figure 2 for Figure 1 Side view of a single-axle bogie applicable to shunting locomotives;

[0029] Figure 3 for Figure 1 A top view of a single-axle bogie applicable to shunting locomotives.

[0030] The specific attached figures are labeled as follows:

[0031] 1. Wheelset assembly; 11. Axle; 12. Wheel; 2. Axle box; 3. Connecting seat; 4. Drive unit; 5. Vibration damping device; 51. Vertical vibration damper; 52. Lateral vibration damper; 6. Traction device; 7. Suspension device; 8. Braking device. Detailed Implementation

[0032] To enable those skilled in the art to better understand the technical solutions in this application, the technical solutions in the embodiments of this application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of the embodiments. Based on the embodiments in this application, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this application.

[0033] It should be noted that when a component is referred to as being "fixed to" or "set on" another component, it can be directly on or indirectly set on the other component; when a component is referred to as being "connected to" another component, it can be directly connected to or indirectly connected to the other component.

[0034] It should be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application 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 application.

[0035] Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of this application, "a plurality of" or "several" means two or more, unless otherwise explicitly specified.

[0036] It should be noted that the structures, proportions, sizes, etc., shown in the accompanying drawings of this specification are only for the purpose of assisting those skilled in the art in understanding and reading the content disclosed in the specification, and are not intended to limit the conditions under which this application can be implemented. Therefore, they have no substantial technical significance. Any modifications to the structure, changes in the proportions, or adjustments to the size should still fall within the scope of the technical content disclosed in this application, provided that they do not affect the effects and purposes that this application can produce.

[0037] Please refer to the following: Figures 1 to 3 The present invention specifically describes a single-axle bogie suitable for shunting locomotives, comprising: wheelset assembly 1, axle box 2, connecting seat 3, drive device 4, vibration damping device 5, traction device 6, suspension device 7, and braking device 8.

[0038] like Figure 3 As shown, in this embodiment, the single-axle bogie is provided with only one set of wheelset assembly 1, including: an axle 11 and wheels 12 disposed at both ends of the axle 11. The wheels 12 have a mounting hole in the center and are sleeved on the outer surface of the axle 11. The drive device 4 is also sleeved on the outer surface of the axle 11 and disposed in the space area in the middle of the wheels 12 to drive the axle 11 to rotate, thereby driving the rotation of the wheels 12 and driving the train.

[0039] likeFigure 1 As shown, the axle box 2 is rotatably connected to the axle 11 and is disposed on both sides of the outer side of the wheel 12. When the wheelset assembly 1 rotates, the axle box 2 can maintain balance to provide an installation platform for the connecting seat 3. At the same time, the axle box 2 is also connected to the vehicle body through the traction device 6 to better transmit traction force from the wheelset assembly 1 to the vehicle body.

[0040] The bottom of the connecting seat 3 abuts against the top of the axle box 2. The top of the connecting seat 3 is connected to the car body through the suspension device 7. As the main component connecting the bogie to the car body, it can better transmit traction to the car body. The top of the connecting seat 3 is also equipped with the vibration damping device 5 connected to the car body, which can improve the comfort of the train.

[0041] The braking device 8 is suspended at the bottom of the vehicle body and brakes the wheel 12 by being suspended on one side of the wheel 12.

[0042] Preferred, such as Figure 3 As shown, in this embodiment, the specific structure of the drive device 4 includes: a traction motor 41 and a bearing box 42;

[0043] The axle box 42 is fitted onto the axle 11. The traction motor 41 is connected to the outer surface of the axle 11 through the axle box 42. The traction motor 41 is connected to the inside of the axle box 42 through a mechanical transmission structure, converting electrical energy into mechanical energy to drive the wheelset assembly 1 to rotate.

[0044] The traction motor 41 is detachably connected to the vehicle body, which makes the traction motor 41 subjected to force balance, avoids the entire load being placed on the wheelset assembly 1, avoids stress concentration, and improves the service life of the wheelset assembly 1.

[0045] Furthermore, such as Figure 1 and Figure 2 As shown, in this embodiment, the driving device further includes a motor boom 43, which is a long rod structure with one end connected to the vehicle body and the other end connected to the traction motor 41. Rubber joints are provided at both ends of the motor boom 43 to enable the locomotive to pass smoothly through curves.

[0046] Preferred, such as Figure 1 As shown, in this embodiment, the traction device 6 is specifically an axle box traction rod. By combining the traction rod and axle box rod in the traditional bogie into one, it is simplified to the axle box traction rod. One end of the axle box traction rod is connected to the axle box body, and the other end is connected to the car body, thereby realizing the transmission of traction force and braking force between the bogie and the car body.

[0047] Preferably, the suspension device 7 is a helical steel spring. The suspension device 7 is symmetrically distributed at both ends of the connecting seat 3. Specifically, in this embodiment, a helical steel spring with low stiffness and high deflection is used. The springs are evenly distributed at the four corners of the bogie. One end of the single-stage suspension device 7 is connected to the vehicle body, and the other end is connected to the axle box 2 through the connecting seat 3.

[0048] Furthermore, in this embodiment, the upper and lower end faces of the connecting seat 3 are provided with cylindrical structures for connection. The connection relationship is as follows: the upper cylindrical end of the connecting seat 3 is engaged with the suspension device 7, and the lower cylindrical end of the connecting seat 3 is engaged with the axle box 2. Specifically, in this embodiment, the upper and lower end faces of the connecting seat 3 are each provided with two cylindrical structures, symmetrically distributed for connection.

[0049] Preferably, in this embodiment, to improve the comfort of train operation, the vibration damping device 5 specifically includes: a vertical vibration damper 51 and a lateral vibration damper 52; these dampen and buffer the applied force from both vertical and lateral directions to improve comfort; for example... Figure 1 and Figure 3 As shown, the connection relationships are as follows:

[0050] One end of the vertical shock absorber 51 abuts against the top of the connecting seat 3, and the other end is detachably connected to the vehicle body;

[0051] One end of the lateral shock absorber 52 abuts against the side of the connecting seat 3 near the wheel, and the other end is detachably connected to the vehicle body.

[0052] Furthermore, in this embodiment, each connecting seat 3 has one vertical vibration damper 51 and two lateral vibration dampers 52. The vertical vibration damper 51 is located at the center of the top surface of the connecting seat 3, and the lateral vibration dampers 52 are located on both sides of the vertical vibration damper 51.

[0053] Preferred, such as Figure 1 As shown, in this embodiment, the braking device 8 is specifically a tread brake. The braking device 8 is suspended to both sides of the wheel 12 and clamps the end face of the wheel 12 to achieve the purpose of braking.

[0054] Furthermore, in this embodiment, the connection between the bogie components and the car body is detachable, facilitating subsequent maintenance and repair of the bogie. Specifically, the drive unit 4, the vibration damping device 5, the traction device 6, and the braking device 8 are connected to the car body via bolts. Specifically, in the drive unit 4, the motor suspension rod 43 is connected to the car body via high-strength steel bolts; in the traction device, the axle box traction rod is connected to the car body via high-strength steel bolts; and the braking device 8 is connected to the car body via high-strength steel bolts.

[0055] The connection method between the suspension device 7 and the vehicle body is the same as that between the connecting seat 3 and a cylindrical structure is also provided on the bottom surface of the vehicle body to engage with the suspension device 7.

[0056] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A single-axle bogie suitable for shunting locomotives, characterized in that, include: Wheelset assembly (1), axle box (2), connecting seat (3), drive unit (4), vibration damping device (5), traction device (6), suspension device (7), braking device (8); The wheelset assembly (1) includes an axle (11) and wheels (12) disposed at both ends of the axle (11). The drive device (4) is sleeved on the outer surface of the axle (11) and disposed in the middle of the wheels (12) to drive the axle (11) to rotate. The axle box (2) is rotatably connected to the axle (11) and is located on both sides of the outer side of the wheel (12) to maintain balance and provide an installation platform for the connecting seat (3). At the same time, the axle box (2) is also connected to the vehicle body through the traction device (6). The bottom of the connecting seat (3) abuts against the top of the axle box (2), and the top of the connecting seat (3) is connected to the vehicle body by the suspension device (7). The top of the connecting seat (3) is also provided with the vibration damping device (5) connected to the vehicle body. The braking device (8) is suspended at the bottom of the vehicle body to brake the wheels (12).

2. The single-axle bogie suitable for shunting locomotives according to claim 1, characterized in that, The drive unit (4) includes: a traction motor and a bearing box; The traction motor is connected to the outer surface of the axle (11) through the axle box; The traction motor is detachably connected to the vehicle body.

3. The single-axle bogie suitable for shunting locomotives according to claim 2, characterized in that, The drive device (4) also includes a motor boom, one end of which is connected to the vehicle body and the other end is connected to the traction motor.

4. The single-axle bogie suitable for shunting locomotives according to claim 1, characterized in that, The traction device (6) is an axle box traction rod, one end of which is connected to the axle box body (2) and the other end is connected to the vehicle body.

5. The single-axle bogie suitable for shunting locomotives according to claim 1, characterized in that, The suspension device (7) is specifically a helical steel spring, and the suspension device (7) is symmetrically distributed at both ends of the connecting seat (3).

6. The single-axle bogie suitable for shunting locomotives according to claim 3, characterized in that, The upper and lower end faces of the connecting seat (3) are provided with cylindrical structures. The upper end cylinder of the connecting seat (3) is engaged with the suspension device (7), and the lower end cylinder of the connecting seat (3) is engaged with the axle box body (2).

7. The single-axle bogie suitable for shunting locomotives according to claim 1, characterized in that, The vibration damping device (5) specifically includes: a vertical vibration damper (51) and a lateral vibration damper (52); One end of the vertical damper (51) abuts against the top of the connecting seat (3), and the other end is connected to the vehicle body; One end of the lateral shock absorber (52) abuts against the side of the connecting seat (3) near the wheel (12), and the other end is connected to the vehicle body.

8. The single-axle bogie suitable for shunting locomotives according to claim 7, characterized in that, The lateral damper (52) is located on both sides of the vertical damper (51).

9. The single-axle bogie suitable for shunting locomotives according to claim 1, characterized in that, The braking device (8) is specifically a tread brake, which is clamped and braked by suspending it to both sides of the wheel (12).

10. The single-axle bogie suitable for shunting locomotives according to any one of claims 1 to 9, characterized in that, The drive device (4), the vibration damping device (5), the traction device (6), and the braking device (8) are connected to the vehicle body by bolts, and the suspension device (7) is engaged with the vehicle body.

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