WO2021135158A1

WO2021135158A1 - Single-shaft rubber-wheel bogie

Info

Publication number: WO2021135158A1
Application number: PCT/CN2020/101761
Authority: WO
Inventors: 张文涛; 沈龙江; 刘余龙; 彭爱林; 党春梅; 刘国云; 孔媛媛; 周立秋; 陈姝枚; 谭云; 周新鹏; 谢加辉; 高彬
Original assignee: 中车株洲电力机车有限公司
Priority date: 2020-01-02
Filing date: 2020-07-14
Publication date: 2021-07-08
Also published as: JP2023507202A; CN111055872B; JP7402989B2; DE112020005312T5; CN111055872A

Abstract

Disclosed is a single-shaft rubber-wheel bogie, comprising a framework, an axle device (12) and an axle fixing device (13). The framework comprises a guide frame (1) and a suspension (2), the suspension (2) is arranged above the guide frame (1) by means of at least four elastic elements, and a guide wheel (11) is fixedly arranged on the guide frame (1); rubber wheels (13) are arranged at two ends of the axle device (12), and the axle device (12) is located between the suspension (2) and the guide frame (1); the axle fixing device (13) is used for fixing the axle device (12) on the guide frame (1); a traction rod (10) is connected between the axle fixing device (13) and the suspension (2); and a driving device is further arranged on the suspension (2) and is used for providing power for the axle device (12). The bogie is conducive to realizing a lightweight design and improving the comfort of a vehicle; and the structure of the bogie is simplified, and the maintainability thereof is enhanced.

Description

Single axle rubber wheel bogie

Technical field

The invention relates to a single-axle rubber-tired light rail vehicle bogie, belonging to the technical field of the overall structure of rail transit bogies.

Background technique

In the field of rail transit technology, the rubber-tyred rail system has the advantages of low noise, low vibration, and high ride comfort because it uses the tire technology of road transportation instead of the steel-wheeled rail in the traditional rail transit field. It also has the advantages of low noise, low vibration, and high ride comfort. Adhesion, the vehicle has a strong climbing ability, and the maximum slope can reach 10%; the vehicle has a higher ability to pass through a small curve radius and can adapt to complex terrain. Domestic cities such as Guangzhou, Beijing and Tianjin have some applications. Existing rubber-tyred vehicle bogies adopt leaf spring load-bearing method, which is heavy and rigid, and cannot continue to improve the riding comfort; the existing rubber-tyred vehicle tow bar needs to be welded to the axle bridge by welding the mounting seat, and welding will affect the interior of the axle bridge The performance of the gear transmission and the large size of the axle bridge are not conducive to compact structure. In addition, because it does not have the anti-overturning function, the running speed of the vehicle cannot continue to increase. It can be learned from the above description that how to continue to improve the comfort and weight of rubber-tyred vehicles, and to avoid the use of welding between the axle bridge and the thrust rod, and to prevent the vehicle from overturning has become a technical problem to be solved by those skilled in the art.

Summary of the invention

In order to improve the comfort and light weight of single-axle rubber-tired vehicles, the present invention provides a single-axle rubber-tired bogie. The specific technical solutions are as follows.

A single-axle rubber-wheeled bogie, which is characterized in that it comprises:

A frame, the frame includes a guide frame and a suspension frame, the suspension frame is arranged above the guide frame through at least four elastic elements, and the guide frame is fixedly provided with a guide wheel;

Axle bridge device, rubber wheels are provided at both ends of the axle bridge device, and the axle bridge device is located between the suspension and the guide frame; and

Axle and bridge fixing device, the axle and bridge fixing device is used to fix the axle and bridge device to the guide frame;

Wherein, a traction rod is connected between the axle and bridge fixing device and the suspension, and a driving device is also provided on the suspension, and the driving device is used to provide power for the axle and bridge device.

The adoption of the above technical solution solves the problems of complex structure and large rigidity of the leaf spring, which is beneficial to realize the lightweight design and improve the comfort of the vehicle. The axle bridge device and the guide frame are connected through the axle bridge fixing device, and the two ends of the traction rod are respectively connected with the suspension and the axle bridge fixing device, which abandons the welding method used in the traditional axle bridge device to install the traction rod, and avoids affecting the axle. The internal gear transmission of the bridge device can simplify the structure and enhance the maintainability. By setting the guide wheels, the anti-overturning ability of the vehicle is improved.

Further, the elastic element is an air spring; the guide frame includes two guide frame side beams and two guide frame end beams formed in a mouth shape, and four corners of the guide frame are provided with air spring installations. The upper surface of the middle part of the guide frame side beam has an axle bridge mounting seat; the suspension includes two suspension side beams and two suspension end beams, and the four corners of the suspension are provided with air Spring mounting seat; the guide frame and the suspension frame are connected by the air spring.

Further, one of the suspension end beams is provided with a motor mounting seat for installing the driving device, and the other suspension end beam is provided with a traction rod seat for connecting the traction rod.

Further, the axle bridge fixing device includes an upper fixing frame, a lower fixing frame and fastening bolts, the upper fixing frame is located above the axle bridge device, the lower fixing frame is located below the guide frame, and The fastening bolts tightly connect the upper fixing frame and the lower fixing frame; the upper fixing frame is provided with a traction rod seat.

Further, the lower surface of the side beam of the guide frame is provided with a concave and/or convex positioning structure corresponding to the lower fixing frame, and the upper surface of the side beam of the guide frame is provided with a corresponding axle bridge device. A concave and/or convex positioning structure, the lower surface of the upper fixing frame is provided with a concave and/or convex positioning structure corresponding to the axle bridge device.

Further, the traction rod includes a longitudinal traction rod and a V-shaped traction rod, the longitudinal traction rod is parallel to the suspension side beam of the suspension, one end of which is connected to the traction rod seat of the upper fixing frame, and the other end The drawbar seat connected to the suspension; the V-shaped drawbar includes a pair of diagonal drawbars symmetrical about the longitudinal centerline of the bogie, the diagonal drawbar and the longitudinal drawbar form a certain angle One end of the oblique traction rod is connected to the traction rod seat of the upper fixing frame, and the other end is connected to the traction rod seat of the suspension.

Further, the four corners of the guide frame are cantilever beams, and the air spring mounting seat is provided on the cantilever beam; the four corners of the suspension are suspension suspensions extending downward The lower end of the suspension beam is provided with the air spring mounting seat.

Further, it also includes a vertical damper. The lower end of the vertical damper is connected to the guide frame, and the upper end is connected to the suspension; preferably, the vertical damper is connected to the vertical direction. Present a certain angle.

Further, a slewing support mechanism is fixedly provided in the middle of the suspension side beam.

Further, the guide wheels are a pair and are symmetrical with respect to the longitudinal centerline of the bogie, and the rotation axis of the guide wheels is a vertical direction.

Further, the driving device is a motor, the motor is mounted on the motor mounting seat through a mounting plate, the mounting plate is fixedly connected to the motor through a first fastener, and the mounting plate is fixedly connected to the motor through a second fastener. The component is fixed to the motor mounting seat, and an elastic rubber pad is sleeved on the second fastener.

The single-axle rubber-tired light rail vehicle bogie of the present invention has the following beneficial effects:

The use of a slewing support mechanism can solve the technical problem of the large turning angle between the car body and the suspension at the small curve;

The central guide system designed for the vehicle ensures that the vehicle runs along the guide rail and has the effect of anti-rolling. The guide wheels run under the guide rail to prevent the vehicle from overturning;

The motor adopts the elastic frame suspension mode, and the connection between the motor and the axle bridge adopts the longitudinal connection of the universal coupling, which can adapt to the larger dynamic displacement between the guide frame and the suspension;

The axle bridge device and the guide frame are connected by the axle bridge fixing device, and the traction rod is connected with the axle bridge fixing device, which solves the problem that the size of the axle bridge restricts the installation space of the traction rod, simplifies the structure, and enhances maintainability.

The secondary suspension mode is a combination of four air springs and vertical shock absorbers. The air springs are equipped with a height adjustment device to facilitate the adjustment of the height of the vehicle floor;

The longitudinal drawbar and the V-type drawbar are arranged between the axle bridge device and the suspension, which can transmit the traction and braking force, and at the same time overcome the nodding movement caused by the traction and braking of the vehicle. The V-type drawbar is constant with the longitudinal drawbar. The included angle can also transmit lateral loads.

Single wheel axle technology is adopted, which is simple and reliable in structure, low in cost, and good in maintainability; rubber wheels can reduce running noise, and the vehicle has strong climbing ability, high starting and braking acceleration, short braking distance, and wheels The replacement efficiency is high and the process is simple.

Description of the drawings

Fig. 1 is a three-dimensional schematic diagram of the single-axle rubber-wheeled bogie of the present invention;

Figure 2 is a three-dimensional schematic diagram (with a partial cross-section) of the single-axle rubber-tired bogie of the present invention;

Figure 3 is a schematic cross-sectional view of the axle bridge device;

Figure 4 is a schematic diagram of the guide frame;

Figure 5 is a schematic diagram of the suspension;

Figure 6 is a schematic diagram of the architecture;

Figure 7 is a schematic diagram of the axle and bridge fixing device;

Figure 8 is a top view of the frame (showing the drawbar);

Figure 9 is an exploded schematic view of the traction rod;

Figure 10 is an exploded schematic view of the shock absorber;

Figure 11 is a schematic view of the mounting plate.

In the picture: guide frame 1, guide frame side beam 1.1, guide frame end beam 1.2, suspension beam 1.3, axle bridge mounting seat 1.4, suspension 2, suspension side beam 2.1, suspension end beam 2.2, middle cross beam 2.3, Suspension suspension beam 2.4, air spring 3, air spring mounting seat 4, guide wheel mounting seat 6, slewing support mounting seat 7, traction rod seat 8, motor mounting seat 9, traction rod 10, longitudinal traction rod 10.1, V-shaped Traction bar 10.2, guide wheel 11, axle bridge device 12, axle bridge fixing device 13, upper fixing frame 13.1, lower fixing frame 13.2, fastening bolt 13.3, motor 14, concave and / convex positioning structure 16, vertical shock absorber 17. Longitudinal shock absorber 18, slewing support mechanism 19, guide rail 20, mounting plate 21, first bolt 22, second bolt 23, elastic rubber pad 24, rubber wheel 25, emergency wheel 26.

Detailed ways

The present invention will be described in further detail below in conjunction with the accompanying drawings.

See Figure 1-11, a single-axle rubber-wheeled bogie, including:

A frame, the frame includes a guide frame 1 and a suspension frame 2, the suspension frame 2 is arranged above the guide frame 1 through at least four air springs (an example of elastic elements), and the guide frame 1 is fixedly provided with a guide wheel 11;

The axle bridge device 12 is provided with rubber wheels 13 at both ends of the axle bridge device 12, and the axle bridge device 12 is located between the suspension 2 and the guide frame 1. The axle bridge device 12 adopts the existing technology, which is similar to the rear axle device of an automobile; as well as

Axle and bridge fixing device 13, which is used to fix the axle and bridge device 12 to the guide frame 1;

Wherein, a traction rod 10 is connected between the axle and bridge fixing device 13 and the suspension 2, and a motor 14 (an example of a driving device) is also provided on the suspension 2. The motor 14 is used to provide power for the axle and bridge device 12. It adopts a longitudinal arrangement and transmits the motor torque through a universal coupling (not shown).

The axle bridge device 12 has two rubber wheels 25 at each end, and an emergency wheel 26 with a rigid structure is arranged between the two rubber wheels 25. When the rubber wheel 25 has an emergency situation such as a tyre burst, the emergency wheel 26 can support the vehicle bogie effect.

4-6, the guide frame 1 includes two guide frame side beams 1.1 and two guide frame end beams 1.2 formed in a square shape. The four corners of the guide frame are approximately horizontal overhanging beams 1.3, the overhanging beams 1.3 is provided with an air spring mounting seat 4; the guide frame side beam 1.1 and the guide frame end beam 1.2 are both box beam structures, and the overhanging beam 1.3 can be a separate box beam structure, or it can be a guide frame side beam 1.1 or A part of the guide frame end beam 1.2, the guide frame side beam 1.1 and the guide frame end beam 1.2 are connected to each other by welding; the middle part of the guide frame side beam 1.1 protrudes upward, and the upper surface of the raised middle part has an axle bridge mounting seat 1.4, The axle bridge mounting seat 1.4 is used to install the fixed axle bridge device 12; the guide frame end beam 1.2 is also provided with a guide wheel mounting seat 6 for installing the guide wheel 11, and the setting of the guide wheel 11 is beneficial to guide the vehicle and prevent the vehicle from overturning. The guide wheel mounting seat 6 is connected to the upper and lower cover plates through butt welds on the basis of the upper and lower cover plates of the guide frame end beam 1.2, which ensures the structural strength of the guide wheel mounting seat 6.

Referring to Figure 5, the suspension 2 includes two suspension side beams 2.1, two middle cross beams 2.3 and two suspension end beams 2.2. Suspension beam 2.4 extending downwards, the lower end of the suspension beam 2.4 is provided with an air spring mounting seat 4; the two middle cross beams 2.3 are parallel to the suspension end beam 2.2, and the middle of the suspension side beam 2.1 is provided with a rotation Supporting the mounting seat 7, the middle cross beam 2.3 of the suspension is an I-beam structure, which is beneficial to reduce weight.

A suspension end beam 2.2 of the suspension 2 is provided with a traction rod seat 8 in the downwardly overhanging part. One end of the traction rod 10 is connected to the traction rod seat 8 of the suspension, and the other end is connected to the axle bridge fixing device 13. The other suspension end beam 2.2 of the suspension 2 is provided with a motor mounting seat 9 for suspending and mounting the motor 14.

The guide frame 1 and the suspension frame 2 are connected by four air springs 3. The suspension frame 2 is installed directly above the guide frame 1 through the air spring 3, and the vertical force is transmitted through the air spring 3.

Referring to Figure 1 and Figure 7, the axle bridge fixing device 13 includes an upper fixing frame 13.1, a lower fixing frame 13.2 and fastening bolts 13.3. The upper fixing frame 13.1 is located above the axle bridge device 12, and the lower fixing frame 13.2 is located below the guide frame 1. , The fastening bolt 15 fastens the upper fixing frame 13.1 and the lower fixing frame 13.2; the upper fixing frame 13.1 is provided with a traction rod seat 8.

Referring to Figure 2, Figure 3, Figure 7, preferably, the lower surface of the side beam of the guide frame is provided with a concave and/or convex positioning structure (not shown) corresponding to the lower fixing frame, and the upper surface of the side beam 1.1 of the guide frame The surface is provided with a concave and/or convex positioning structure 16 corresponding to the axle bridge device, and the lower surface of the upper fixing frame 13.1 is provided with a concave and/or convex positioning structure 16 corresponding to the axle bridge device 12. In this way, when the axle bridge device 12 is fixed to the guide frame side beam 1.1 by the axle bridge fixing device 13, it is beneficial to improve the tightness of the axle bridge device 12 and the guide frame side beam 1.1, reduce the gap, and avoid unnecessary vibration and noise. .

Referring to Figures 8-9, the drawbar 10 includes a longitudinal drawbar 10.1 and a V-shaped drawbar 10.2. The longitudinal drawbar 10.1 is parallel to the suspension side beam 2.1 of the suspension 2, and one end is connected to the drawbar seat 8 of the upper fixing frame 13.1 , The other end is connected to the drawbar seat 8 of the suspension 2; the V-type drawbar 10.2 includes a pair of diagonal drawbars symmetrical about the longitudinal centerline of the bogie (the longitudinal centerline of the bogie is roughly parallel to the extension direction of the suspension side beams) , The oblique traction rod and the longitudinal traction rod 10.1 form a certain included angle, one end of the oblique traction rod is connected to the traction rod seat of the upper fixing frame, and the other end is connected to the traction rod seat of the suspension. The longitudinal drawbar and the V-type drawbar are arranged between the axle bridge fixing device and the suspension, which can transmit traction and braking force, and at the same time overcome the nodding movement caused by the traction and braking of the vehicle. The V-type drawbar is in a certain direction with the traction The included angle can also transmit lateral loads.

10, the single-axle rubber-tired bogie also includes a vertical shock absorber 17, the lower end of the vertical shock absorber 17 is connected with the guide frame 1, and the upper end is connected with the suspension 2; preferably, the vertical shock absorber 17 It is at a certain angle with the vertical direction, and the inclined arrangement is conducive to the vertical shock absorber to exert a certain lateral vibration damping effect. The air spring 3 and the vertical damper 17 together constitute a secondary suspension device. Two longitudinal shock absorbers 18 are arranged above the suspension 2. One end of the longitudinal shock absorber 18 is connected to the suspension, and the other end is connected to the vehicle body. The longitudinal shock absorber 18 can absorb the relative corners of the vehicle body and the suspension 2. The impact improves the comfort of the vehicle passing the curve. The air spring 3 is equipped with a height adjustment device (not shown). The height adjustment device is used to control the height of the air spring 3 to adjust the floor of the vehicle (body) to maintain a level.

Referring to Fig. 1, a slewing support mechanism 19 is fixedly arranged in the middle of the suspension side beam 2.1. The slewing support mechanism 19 is located between the suspension 2 and the vehicle body (not shown), so that the vehicle can smoothly pass through a route with a small curve radius. The slewing support mechanism 19 is similar to a thrust bearing, and includes a ball unit in the middle and an upper cover ring and a lower cover ring covering the ball unit.

Referring to Figures 1-2, the guide wheels 11 are a pair, which are installed on the guide wheel mounting seat 6 of one of the guide frame end beams 1.2, and are symmetrical about the longitudinal centerline of the bogie, and the rotation axis of the guide wheel 11 is in the vertical direction. The cross section of the guide rail 20 is T-shaped, a pair of guide wheels 11 are clamped on the vertical part of the guide rail 20, and the horizontal part of the guide rail 20 can prevent overturning.

Refer to 1, 11, the driving device is the motor 14, the motor 14 is installed on the motor mounting base 9 through the mounting plate 21, the mounting plate 21 is fixedly connected to the motor 14 through the first bolt 22 (an example of the first fastener), and the mounting plate 21 is fixed to the motor mounting base 9 by a second bolt 23 (an example of a second fastener), and an elastic rubber pad 24 is sleeved on the second bolt 23. Adopting this installation method can realize the elastic suspension of the motor and improve the convenience of maintenance.

The embodiments of the present invention are described above with reference to the accompanying drawings. In the case of no conflict, the embodiments of the present invention and the features in the embodiments can be combined with each other. The present invention is not limited to the above-mentioned specific embodiments. The above-mentioned specific embodiments are only illustrative and not restrictive. Under the enlightenment of the present invention, those skilled in the art will not depart from the purpose and rights of the present invention. Many forms can be made when the protection scope is required, and these all fall within the protection scope of the present invention.

Claims

A single-axle rubber-wheeled bogie, which is characterized in that it comprises:

The frame includes a guide frame (1) and a suspension frame (2), the suspension frame (2) is arranged above the guide frame (1) through at least four elastic elements, the guide frame (1) A guide wheel (11) is fixed on the top;

Axle bridge device (12), rubber wheels (25) are provided at both ends of the axle bridge device (12), and the axle bridge device (12) is located between the suspension (2) and the guide frame (1) ) Between; and

Axle and bridge fixing device (13), the axle and bridge fixing device (13) is used to fix the axle and bridge device (12) to the guide frame (1);

Wherein, a traction rod (10) is connected between the axle and bridge fixing device (13) and the suspension (2), and a driving device is also provided on the suspension (2), and the driving device is used for The axle bridge device (12) provides power.
The single-axle rubber-wheeled bogie according to claim 1, wherein the elastic element is an air spring (3); the guide frame (1) includes two guide frame side beams formed in a mouth shape (1.1) and two guide frame end beams (1.2), the four corners of the guide frame (1) are provided with air spring mounting seats (4); the upper surface of the middle part of the guide frame side beam (1.1) It has an axle bridge mounting seat (1.4); the suspension (2) includes two suspension side beams (2.1) and two suspension end beams (2.2), and the four corners of the suspension (2) are all An air spring mounting seat (4) is provided; the guide frame (1) and the suspension frame (2) are connected by the air spring (3).
A single-axle rubber-wheeled bogie according to claim 2, wherein one of the suspension end beams (2.2) is provided with a motor mounting seat (9) for installing the driving device, and the other The suspension end beam (2.2) is provided with a traction rod seat (8) for connecting the traction rod (10); preferably, the middle part of the suspension side beam (2.1) is fixedly provided with a slewing support mechanism ( 19).
The single-axle rubber-wheeled bogie according to claim 3, characterized in that the axle and bridge fixing device (13) comprises an upper fixing frame (13.1), a lower fixing frame (13.2) and a fastening bolt (13.3) , The upper fixing frame (13.1) is located above the axle bridge device (12), the lower fixing frame (13.2) is located below the guide frame (1), and the fastening bolts (13.3) are The upper fixing frame (13.1) and the lower fixing frame (13.2) are tightly connected; the upper fixing frame (13.1) is provided with a traction rod seat (8).
The single-axle rubber-tired bogie according to claim 4, wherein the lower surface of the guide frame side beam (1.1) is provided with concave and/or convex corresponding to the lower fixing frame (13.2). A positioning structure (16), the upper surface of the guide frame side beam (1.1) is provided with a concave and/or convex positioning structure (16) corresponding to the axle bridge device (12), and the upper fixing frame (13.1) A concave and/or convex positioning structure (16) corresponding to the axle bridge device (12) is provided on the lower surface of the device.
A single-axle rubber-tired bogie according to claim 4 or 5, wherein the traction rod (10) comprises a longitudinal traction rod (10.1) and a V-type traction rod (10.2), and the longitudinal traction rod (10.1) Parallel to the suspension side beam (2.1) of the suspension (2), one end is connected to the traction rod seat (8) of the upper fixing frame, and the other end is connected to the suspension (2) Traction rod seat (8); the V-shaped traction rod (10.2) includes a pair of diagonal traction rods symmetrical about the longitudinal centerline of the bogie, and the diagonal traction rod and the longitudinal traction rod (10.1) are in a certain shape In an included angle, one end of the oblique traction rod is connected to the traction rod seat (8) of the upper fixing frame, and the other end is connected to the traction rod seat (8) of the suspension (2).
The single-axle rubber-tired bogie according to claim 2, wherein the four corners of the guide frame (1) are overhanging beams (1.3), and the overhanging beams (1.3) are arranged There is the air spring mounting seat (4); the four corners of the suspension (2) are suspension beams (2.4) extending downward, and the lower end of the suspension beam (2.4) is arranged There is the air spring mounting seat (4).
The single-axle rubber-tired bogie according to claim 1, further comprising a vertical damper (17), and the lower end of the vertical damper (17) and the guide frame ( 1) Connected, the upper end is connected to the suspension (2); preferably, the vertical damper (17) forms a certain angle with the vertical direction.
A single-axle rubber-wheeled bogie according to claim 1, wherein the guide wheels (11) are a pair and are symmetrical about the longitudinal centerline of the bogie, and the guide wheels (11) are symmetrical with respect to the longitudinal center line of the bogie. The axis of rotation is the vertical direction.
The single-axle rubber-wheeled bogie according to claim 3, characterized in that the driving device is a motor (14), and the motor (14) is mounted on the motor mounting base (14) through a mounting plate (21). 9) The mounting plate (21) is fixedly connected to the motor (14) through a first fastener, and the mounting plate (21) is fixed to the motor mounting seat (9) through a second fastener, An elastic rubber pad (24) is sleeved on the second fastener.