CN112550337A

CN112550337A - Single-axle bogie with anti-nodding and anti-rolling functions and railway vehicle with single-axle bogie

Info

Publication number: CN112550337A
Application number: CN202011490641.1A
Authority: CN
Inventors: 张懿; 李耘茏; 张扬; 丁兴国; 刘成龙
Original assignee: China Railway Transit Equipment Co Ltd
Current assignee: China Railway Transit Equipment Co Ltd
Priority date: 2020-12-16
Filing date: 2020-12-16
Publication date: 2021-03-26
Anticipated expiration: 2040-12-16
Also published as: CN112550337B

Abstract

The invention relates to a single-axle bogie with anti-nod and anti-rolling functions and a railway vehicle with the same. The anti-nodding group and the anti-rolling group are combined, so that the whole combination has the functions of nodding resistance and rolling resistance, the occupied space of the bottom of the railway vehicle is reduced, the installation is simple and convenient, the labor can be saved, the installation efficiency is improved, the processing and the assembly are convenient, and the cost is reduced.

Description

Single-axle bogie with anti-nodding and anti-rolling functions and railway vehicle with single-axle bogie

Technical Field

The invention relates to the design and production technology of railway vehicles, in particular to a single-axle bogie with anti-nodding and anti-rolling functions and a railway vehicle with the same.

Background

The straddle type monorail train is supported, stabilized and guided by a single rail, a rail traffic system that a train body runs by riding a rubber tire on a rail beam is adopted, and the straddle type monorail train is widely used in Chongqing, and has the characteristics of strong adaptability, low noise, small turning radius and strong climbing capability. The single-rail system can be better suitable for complex terrain and landform environments. The width of the viaduct pier of the straddle type monorail is less than 2 meters on average, the occupied area of the pier is saved by about half compared with other viaduct traffic, a stand column can be arranged in the center of an urban road or at green belts at two sides of the urban road, the occupied area is small, the shielding is less, the line selection is flexible, the traffic interference on the existing urban road is slight, in addition, the vehicle body of the straddle type monorail is very fresh and beautiful, and the viaduct pier becomes a brand new urban landscape line after being built into a traffic vehicle.

At present, the single-axle bogie can effectively reduce the height of a vehicle, thereby being beneficial to reducing the gravity center of the vehicle, and enabling the vehicle to run more stably and have better comfort; on the other hand, the single-axle bogie can enable the running track of the tire at the curve to be more matched with the track beam, reduce the running resistance and the abrasion of the tire, and reduce the noise and the vibration, so that the straddle monorail train increasingly adopts the single-axle bogie, and the single-axle bogie can generate a moment of nodding on the framework during traction or braking to influence the running stability of the vehicle. Therefore, it is necessary to apply a constraint between the frame and the vehicle body to suppress nodding movement of the frame. In order to ensure that a single-rail vehicle has good stability and riding comfort and simultaneously ensures that the floor height of the vehicle is unchanged, the secondary suspension of the bogie can adopt an air spring system, but the rolling rigidity of the vehicle is reduced at the same time, and the rolling rigidity of the vehicle can be increased by installing an anti-rolling device.

Therefore, for the monorail single-axle bogie adopting the air spring for the secondary suspension, the monorail single-axle bogie has the functions of resisting nodding and rolling, and the technical problem to be solved by the technical personnel in the field is urgently needed.

Disclosure of Invention

The invention aims to provide a single-axle bogie with functions of resisting nodding and resisting side rolling and a railway vehicle with the same.

The technical scheme adopted by the invention for solving the technical problems is as follows: a single-axle bogie with anti-nodding and anti-rolling functions is arranged on a track beam and comprises a bogie frame, a mounting seat connected with a railway vehicle body, a secondary suspension arranged between the mounting seat and the bogie frame, running wheels arranged on the bogie frame, guide wheels arranged on four corners of the bogie frame, stabilizing wheels arranged in the middle of two sides of the bogie frame and an integrated motor driving the running wheels to move, a vertical shock absorber and a transverse shock absorber are arranged between the bogie frame and the mounting seat, a nodding-resistant side rolling assembly is arranged on the bogie frame, the anti-nod head side rolling assembly is fixed on a railway vehicle body, and comprises an anti-nod head group which stretches across a railway beam and is positioned on two sides of a bogie frame, and the anti-nod head group is rotationally connected with the anti-nod head group.

Further specifically, the anti-rolling group comprises a first cross rod, and a second cross rod and a third cross rod which are arranged at two ends of the first cross rod, wherein at least two first supporting seats are arranged on the first cross rod, rubber joints are arranged at the contact positions of the inner parts of the first supporting seats and the first cross rod, and the two first supporting seats are fixed on a railway vehicle body; the second cross rod and the third cross rod are perpendicular to the first cross rod, the second cross rod and the third cross rod are located on the same plane, the two anti-point head groups are respectively a first anti-point head group and a second anti-point head group, the second cross rod is connected with the first anti-point head group, and the third cross rod is connected with the second anti-point head group.

The anti-nodding head group comprises a fourth cross rod, a fifth cross rod and a sixth cross rod which are arranged at two end parts of the fourth cross rod, a first vertical rod arranged at the end part of the fifth cross rod and a second vertical rod arranged at the end part of the sixth cross rod, wherein the fifth cross rod is rotatably connected with the first vertical rod, the sixth cross rod is rotatably connected with the second vertical rod, at least two second supporting seats are arranged on the fourth cross rod, a rubber joint is arranged at the contact position between the inner part of each second supporting seat and the fourth cross rod, and the two second supporting seats are fixed on a vehicle body of the rail vehicle; the first vertical rod and the second vertical rod are respectively arranged on two sides of the secondary suspension and are rotatably connected to the bogie frame.

Further specifically, the end of the first vertical rod is provided with a first joint bearing and a second joint bearing, the second joint bearing is located above the first joint bearing, the first joint bearing and the second joint bearing are perpendicular to each other, the first joint bearing is connected with the fifth cross rod, and the second joint bearing is connected with the second cross rod and the third cross rod.

Further specifically, a third joint bearing is arranged at the end of the second vertical rod and connected with the sixth cross rod.

More specifically, the joints of the first vertical rod and the second vertical rod with the bogie frame are connected through rubber joints.

More specifically, the first cross bar, the second cross bar and the third cross bar are formed by bending the same spring steel rod piece; the fourth cross rod, the fifth cross rod and the sixth cross rod are formed by bending the same spring steel rod piece.

More specifically, the secondary suspension adopts an air spring.

Further specifically, the bogie frame is a square frame.

A rail vehicle comprising a single axle bogie as described above.

The invention has the beneficial effects that: after having adopted above-mentioned structure, will resist some head groups and resist the group combination of rolling on one's side, make the existing function of resisting some head of whole combination have the function of rolling on one's side again, reduce the occupation space of rail vehicle bottom, the installation is comparatively simple and convenient, can use manpower sparingly, promotes the installation effectiveness, and it is comparatively convenient to process the equipment simultaneously, reduce cost.

Drawings

FIG. 1 is a first schematic structural view of a truck according to the present invention;

FIG. 2 is a second schematic structural view of the truck of the present invention;

FIG. 3 is a schematic structural view of an anti-nodding roll assembly of the present invention;

fig. 4 is an enlarged schematic view of a portion a of fig. 3.

In the figure: 1. a track beam; 2. a bogie frame; 3. a mounting seat; 4. secondary suspension; 5. a running wheel; 6. a guide wheel; 7. a stabilizing wheel; 8. an integrated motor; 9. a draw bar; 10. a vertical shock absorber; 11. a transverse damper; 12. an anti-nodding side-rolling assembly; 121. a first cross bar; 122. a second cross bar; 123. a third cross bar; 124. a fourth cross bar; 125. a fifth cross bar; 126. a sixth cross bar; 127. a first support base; 128. a second support seat; 129. a first vertical bar; 1210. a second vertical bar; 1211. a first joint bearing; 1212. a second joint bearing; 1213. a third spherical plain bearing; 1214. a rubber joint.

Detailed Description

In order to make the implementation objects, technical solutions and advantages of the present invention clearer, the technical solutions in the embodiments of the present invention will be described in more detail below with reference to the accompanying drawings in the embodiments of the present invention. In the drawings, the same or similar reference numerals denote the same or similar elements or elements having the same or similar functions throughout. The described embodiments are only some, but not all embodiments of the invention. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate orientations or positional relationships based on those shown in the drawings, and are used merely for convenience in describing the present invention and for simplifying the description, but do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the scope of the present invention.

The present invention will be described in detail below with reference to the accompanying drawings.

As shown in figures 1 and 2, the single-axle bogie with anti-nod and anti-rolling functions is arranged on a track beam 1 and comprises a bogie frame 2, a mounting seat 3 connected with a track vehicle body, a secondary suspension 4 arranged between the mounting seat 3 and the bogie frame 2, running wheels 5 arranged on the bogie frame 2, guide wheels 6 arranged at four corners of the bogie frame 2, stabilizing wheels 7 arranged at the middle parts of two sides of the bogie frame 2 and an integrated motor 8 for driving the running wheels 5 to move, wherein the bogie frame 2 is used for mounting the running wheels 5, the square bogie is adopted in the scheme, the running wheels 5 are arranged inside the bogie frame 2, the integrated motor 8 is arranged on the bogie frame 2 and used for driving the running wheels 5 to run on the track beam 1, and simultaneously, the track vehicle is driven by a traction rod 9 arranged between the bogie frame 2 and the track vehicle body, thereby realizing the advancing of the rail vehicle; the secondary suspension 4 adopts an air spring structure, so that the railway vehicle has better stability and riding comfort in the running process, the four guide wheels 6 can ensure that the bogie normally runs on the track beam 1, and the use of the stabilizing wheels 7 further improves the stability in the running and steering processes; a vertical shock absorber 10 and a transverse shock absorber 11 are arranged between the bogie frame 2 and the mounting seat 3, the vertical shock absorber 10 is used for reducing impact and vibration in the vertical direction, and the transverse shock absorber 11 is used for reducing impact and vibration in the horizontal direction; because the rail vehicle has the risk of nodding and rolling laterally when running, so set up the anti nodding side and roll the assembly 12 on the said bogie frame 2, the said anti nodding side and roll the assembly 12 and fix between bogie frame 2 and the rail vehicle car body, it resists nodding function and anti rolling function to combine into an integral structure, thus make the structure have structure simplify, easy to assemble, take up space little at the same time, convenient maintenance, characteristics such as the lowering cost.

Based on the structure, the anti-nod side rolling component 12 mainly has two functions, namely nod resistance and side rolling resistance, the corresponding anti-nod side rolling component is divided into a nod resistance group and a side rolling resistance group, the side rolling resistance group stretches across the track beam 1 and is arranged between the track vehicle body and the bogie frame 2, the nod resistance group has two groups which are respectively arranged at two sides of the bogie frame 2 and are distributed in a bilateral symmetry manner, the nod resistance group is arranged between the track vehicle body and the bogie frame 2, the nod resistance group and the side rolling resistance group are in rotary connection through the joint bearing, and the two groups can rotate relatively when working and can ensure that the corresponding functions of the two groups cannot interfere through the joint bearing.

The anti-rolling group shown in fig. 3 includes a first cross bar 121, and a second cross bar 122 and a third cross bar 123 disposed at two ends of the first cross bar 121, wherein at least two first supporting seats 127 are disposed on the first cross bar 121, a rubber joint is disposed at a contact position of the inside of the first supporting seat 127 and the first cross bar 121, and the first cross bar 121 can be twisted through the rubber joint; the two first supporting seats 127 are fixed on the body of the railway vehicle; the second cross bar 122 and the third cross bar 123 are perpendicular to the first cross bar 121, the second cross bar 122 and the third cross bar 123 are located on the same plane, the two anti-point head groups are respectively a first anti-point head group and a second anti-point head group, the second cross bar 122 is connected with the first anti-point head group, and the third cross bar 123 is connected with the second anti-point head group; the anti-nodding head group comprises a fourth cross bar 124, a fifth cross bar 125 and a sixth cross bar 126 which are arranged at two end parts of the fourth cross bar 124, a first vertical bar 129 arranged at an end part of the fifth cross bar 125 and a second vertical bar 1210 arranged at an end part of the sixth cross bar 126, wherein the fifth cross bar 125 is rotatably connected with the first vertical bar 129, the sixth cross bar 126 is rotatably connected with the second vertical bar 1210, at least two second supporting seats 128 are arranged on the fourth cross bar 124, a rubber joint is arranged at a contact position between the inner part of each second supporting seat 128 and the fourth cross bar 124, and the fourth cross bar 124 can be twisted through the rubber joint; the two second supporting seats 128 are fixed on the body of the railway vehicle; the first vertical rod 129 and the second vertical rod 1210 are respectively disposed at two sides of the secondary suspension 4 and rotatably connected to the bogie frame 2.

As shown in fig. 3 and 4, when the cross bar and the vertical bar are assembled, since the first vertical bar 129 is used for resisting rolling and nodding, a first joint bearing 1211 and a second joint bearing 1212 are disposed at the end of the first vertical bar 129, the second joint bearing 1212 is located above the first joint bearing 1211, since the nodding and the rolling resisting force are perpendicular to each other, the first joint bearing 1211 and the second joint bearing 1212 are perpendicular to each other, the first joint bearing 1211 is connected with the fifth cross bar 125, and the second joint bearing 1212 is connected with the second cross bar 122 and the third cross bar 123; a third joint bearing 1213 is arranged at the end of the second vertical bar 1210, and the third joint bearing 1213 is connected with the sixth cross bar 126; the joints of the first vertical rod 129 and the second vertical rod 1210 with the bogie frame 2 are connected through rubber joints 1214.

The working principle of the anti-nodding side rolling component is as follows:

when the bogie has nod motion, the first vertical rod 129 and the second vertical rod 1210 which are arranged at two sides of the secondary suspension 4 generate vertical relative motion, so that the fifth cross rod 125 and the sixth cross rod 126 generate relative dislocation motion, the fifth cross rod 125 and the sixth cross rod 126 enable the fourth cross rod 124 to generate torsional elastic deformation, the fourth cross rod 124 plays the role of a torsion bar spring to generate a reaction torque, and the reaction torque is always opposite to the displacement direction of the first vertical rod 129 and the second vertical rod 1210 which generate nod motion, so that the nod motion of the bogie is restrained.

When the rail vehicle body rolls laterally, the first vertical rods 129 mounted on two sides of the bogie frame 2 (i.e. two sides of the rail beam 1) are divided into a first vertical rod a and a second vertical rod B for convenience of description, and the first vertical rod a and the first vertical rod B generate vertical relative displacement, so that the second cross rod 122 and the third cross rod 123 generate relative dislocation motion, and the second cross rod 122 and the third cross rod 123 make the first cross rod 121 generate torsional elastic deformation, and the first cross rod 121 acts as a torsion bar spring to generate a reaction torque, which is always opposite to the direction of the lateral roll angle displacement of the rail vehicle body, thereby restricting the lateral roll motion of the rail vehicle body.

Since the first vertical rod 129, the second vertical rod 1210 and the bogie frame 2 are connected through the rubber joint 1214, when the bogie frame 2 and the railway vehicle body rotate relatively, the first vertical rod 129 and the second vertical rod 1210 can rotate around the rubber joint 1214, so that the relative rotation of the bogie frame 2 and the railway vehicle body is not affected; the first vertical rod 129 is connected with the second cross rod 122 and the fifth cross rod 125 by adopting joint bearings, when nodding motion occurs, the nodding resisting group can rotate around the second joint bearing 1212 without influencing the first cross rod 121, the second cross rod 122 and the third cross rod 123, and when anti-rolling motion occurs, the anti-rolling group can rotate around the first joint bearing 1211 without influencing the fourth cross rod 124, the fifth cross rod 125 and the sixth cross rod 126; when the side rolling motion of the railway vehicle body and the bogie frame 2 occurs, the first vertical rod 129 and the second vertical rod 1210 move in the same direction, and the anti-nodding group cannot generate twisting deformation.

In order to further enhance the strength of each cross bar, the first cross bar 121, the second cross bar 122 and the third cross bar 123 are formed by bending the same spring steel rod piece, so that the second cross bar 122 and the third cross bar 123 are ensured to be positioned on the same side of the first cross bar 121; the fourth cross bar 124, the fifth cross bar 125 and the sixth cross bar 126 are formed by bending the same spring steel rod piece, so that the fifth cross bar 125 and the sixth cross bar 126 are positioned on the same side of the fourth cross bar 124; the spring steel rod piece is made of 52CrMoV4 spring steel through forging, bending, heat treatment and machining.

Based on the structure of above-mentioned unipolar bogie, install this unipolar bogie in rail vehicle for this rail vehicle has anti nod simultaneously and the function of anti rolling on one's side, and simultaneously, this rail vehicle can be for striding sitting monorail train.

In summary, the anti-nodding group and the anti-rolling group are combined, so that the whole combination has both the nodding function and the anti-rolling function, the first cross bar 121 has the function of a torsion spring through the structure among the first cross bar 121, the second cross bar 122 and the third cross bar 123, the fourth cross bar 124 has the function of a torsion spring through the structure among the fourth cross bar 124, the fifth cross bar 125 and the sixth cross bar 126, and the generation of nodding and rolling motion is suppressed.

It is to be emphasized that: the above embodiments are only preferred embodiments of the present invention, and are not intended to limit the present invention in any way, and all simple modifications, equivalent changes and modifications made to the above embodiments according to the technical spirit of the present invention are within the scope of the technical solution of the present invention.

Claims

1. A single-axle bogie with anti-nod and anti-rolling functions is arranged on a track beam (1) and comprises a bogie frame (2), a mounting seat (3) connected with a track vehicle body, a secondary suspension (4) arranged between the mounting seat (3) and the bogie frame (2), walking wheels (5) arranged on the bogie frame (2), guide wheels (6) arranged at four corners of the bogie frame (2), stabilizing wheels (7) arranged in the middle parts of two sides of the bogie frame (2) and an integrated motor (8) for driving the walking wheels (5) to move, wherein a vertical shock absorber (10) and a transverse shock absorber (11) are arranged between the bogie frame (2) and the mounting seat (3), and is characterized in that an anti-nod and anti-rolling component (9) is fixedly arranged between the bogie frame (2) and the track vehicle body, the anti-nodding head side rolling assembly (9) comprises an anti-nodding head group which stretches across the track beam (1) and is positioned on two sides of the bogie frame (2), and the anti-nodding head group is in rotary connection with the anti-nodding head group.

2. The single-axle bogie with anti-nodding and anti-rolling functions as claimed in claim 1, wherein the anti-rolling group comprises a first cross bar (121), and a second cross bar (122) and a third cross bar (123) which are arranged at two ends of the first cross bar (121), at least two first supporting seats (127) are arranged on the first cross bar (121), rubber joints are arranged at the contact positions of the first cross bar (121) and the inside of the first supporting seats (127), and the two first supporting seats (127) are fixed on the body of the railway vehicle; second horizontal pole (122) and third horizontal pole (123) perpendicular to first horizontal pole (121), second horizontal pole (122) and third horizontal pole (123) be in the coplanar, two anti some head groups be first anti some head groups and second anti some head groups respectively, second horizontal pole (122) connect first anti some head groups, third horizontal pole (123) connect second anti some head groups.

3. The single-axle bogie with anti-nodding and anti-rolling functions as claimed in claim 2, wherein the anti-nodding group comprises a fourth cross bar (124), a fifth cross bar (125) and a sixth cross bar (126) which are arranged at two ends of the fourth cross bar (124), a first vertical bar (129) which is arranged at an end of the fifth cross bar (125), and a second vertical bar (1210) which is arranged at an end of the sixth cross bar (126), wherein the fifth cross bar (125) is rotatably connected with the first vertical bar (129), the sixth cross bar (126) is rotatably connected with the second vertical bar (1210), at least two second supporting seats (128) are arranged on the fourth cross bar (124), a rubber joint is arranged at a position where the second supporting seats (128) are in contact with the fourth cross bar (124), and the two second supporting seats (128) are fixed on the railway vehicle body; the first vertical rod (129) and the second vertical rod (1210) are respectively arranged on two sides of the secondary suspension (4) and are rotatably connected to the bogie frame (2).

4. The single-axle bogie with anti-nodding and anti-rolling functions as claimed in claim 3, wherein the end of the first vertical bar (129) is provided with a first joint bearing (1211) and a second joint bearing (1212), the second joint bearing (1212) is located above the first joint bearing (1211), the first joint bearing (1211) and the second joint bearing (1212) are perpendicular to each other, the first joint bearing (1211) is connected with the fifth cross bar (125), and the second joint bearing (1212) is connected with the second cross bar (122) and the third cross bar (123).

5. The single-axle bogie with anti-nodding and anti-rolling according to claim 3, characterized in that the end of the second vertical bar (1210) is provided with a third knuckle bearing (1213), and the third knuckle bearing (1213) is connected with the sixth cross bar (126).

6. The single-axle bogie with nodding and rolling resistance according to claim 3, characterized in that the joints of the first and second vertical rods (129, 1210) and the bogie frame (2) are connected by rubber joints (1214).

7. The single-axle bogie with anti-nodding and anti-rolling according to claim 3, characterized in that the first cross bar (121), the second cross bar (122) and the third cross bar (123) are bent from the same spring steel bar; the fourth cross bar (124), the fifth cross bar (125) and the sixth cross bar (126) are formed by bending the same spring steel rod piece.

8. The single axle bogie with anti-nodding and anti-rolling according to claim 1, characterized in that the secondary suspension (4) uses air springs.

9. The single-axle bogie with anti-nodding and anti-rolling according to claim 1, characterized in that the bogie frame (2) is a square frame.

10. A rail vehicle, characterized in that it comprises a single-axle bogie according to any one of claims 1 to 9.