JP2024509631A - bogie - Google Patents

Abstract

An object of the present invention is to provide a bogie which has a smaller wheel base and which enhances its ability to pass through short curves. The bogie includes a hinge connection mechanism (1) and two side beams (2) extending along the longitudinal direction and spaced apart in the transverse direction, the two side beams between (2) a side beam (2) to which are connected two longitudinally spaced cross beams (3), said cross beams (3) being connected to an intermediate segment; edge segments on both sides, a longitudinal beam (4) is connected between the ends of the two intermediate segments on the same side in the lateral direction, and the hinge connection mechanism (1) Attached to the beam (4), at least a portion of said edge segment is laterally tapered inwards in a direction away from said intermediate segment.

Description

This application relates to the technical field of railway vehicles and specifically relates to bogies.

This application was filed with the Chinese Patent Office on July 2, 2021, and the application number is 2021107531321, claiming the priority of the Chinese patent application with the invention title "Bogie", and all the contents are included in this application. It is used in

In general, a hinged bogie carries two bodies, so its wheelbase is large, reaching a maximum of 2.9 meters, so its ability to pass through small curves is poor, the rim wears quickly, and the wheels Direct and indirect losses such as vehicle suspension due to shape modification and replacement are also large.

The present application aims to provide a bogie whose wheelbase is reduced to improve its ability to negotiate small curves, further reduce rim wear, extend reshaping cycles and save costs. purpose.

In order to solve the above technical problem, the present application provides a bogie, including a hinge connection mechanism and two side beams extending along the longitudinal direction and spaced apart laterally, the bogie comprising: Connected between the beams are two longitudinally spaced cross beams, the cross beams including an intermediate segment and an edge segment on either side of the intermediate segment; longitudinal beams are connected between ends on the same side of the direction, the hinge connection mechanism is attached to two of the longitudinal beams, and at least a portion of the edge segment is laterally spaced apart from the intermediate segment. It is gradually sloped inward along the direction.

According to the above structure, since the longitudinal pitch between the two intermediate segments is large, at least a part of both edge segments is separated from the intermediate segment in the lateral direction to create a space for the installation of the hinge connection mechanism. By gradually sloping inward along the direction, it creates space for the brake mechanism, reduces the wheelbase of the bogie, strengthens its ability to negotiate small curves, and also reduces rim wear and improves the shape. Extend retouch cycles and save costs.

Preferably, a vertical size of a connection point between the intermediate segment and the edge segment is smaller than a vertical size of a connection point between the side beam and the edge segment, and the vertical size of at least a portion of the edge segment is , tapering laterally away from the intermediate segment.

Preferably, the edge segment is a box beam structure and the middle segment is a circular tube beam structure.

Preferably, each of the side beams is provided with two sets of air spring units spaced apart from each other along the longitudinal direction, and each set of air spring units includes at least one air spring. and each of the air springs is arranged to be connected in series.

Preferably, each of the air springs is provided with an orifice and the bogie is not provided with a vertical damping device.

Preferably, the hinge connection mechanism includes a first hinge connection base and a second hinge connection base, and the first hinge connection base includes both supports laterally spaced apart from each other, and The body is provided with a support groove whose opening faces upward, the vertical size of at least a portion of the support groove gradually decreases from top to bottom, and the second hinge connection base is used for attaching the core shaft. , support portions are formed at both ends of the core shaft in the axial direction, and the vertical size of at least a portion of the support portion gradually decreases from top to bottom, and in the assembled state, the vertical size of the support portion is At least a portion of the vertical wall surface of the portion where the size of the support groove gradually decreases is in contact with at least a portion of the groove side wall of the portion of the support groove where the vertical size of the support groove gradually decreases.

Preferably, the longitudinal size of at least the lower end of the support part gradually decreases from top to bottom, and includes two wedge-shaped surfaces arranged opposite each other, the wedge-shaped surfaces are connected by a bottom surface, and the wedge-shaped surfaces are connected by a bottom surface. and the bottom surface, a groove side wall of the support groove includes a first side wall surface and a second side wall surface whose inclination matches the wedge-shaped surface, and the first side wall surface is The first side wall surface and the second side wall surface are below the second side wall surface, and the first side wall surface and the second side wall surface transition by an arc surface, and the wedge-shaped surface contacts the second side wall surface and moves the second side wall surface downwardly. By protruding from the ridge, the ridge is arranged in a suspended state.

Preferably, the groove bottom wall of the support groove and the first side wall surface transition by an arc surface.

Preferably, a mounting plate for connecting to the vehicle body is provided on one side of the first hinge connection base in the longitudinal direction, and a reinforcing block is provided on a side of the support body away from the mounting plate in the longitudinal direction. and at least a portion of the reinforcing block is above a bottom wall of the support groove.

Preferably, the device further includes a tightening block connected to the support and tightening the core shaft.

Preferably, a single traction rod is further connected to the first hinge joint.

Preferably, the device further includes an anti-rollover torsion bar device including a torsion bar, a torque arm, and a connecting rod, and bearing pedestals are provided at both ends of the torsion bar, and the bearing pedestals are attached to the bottom of the edge segment. , the connecting rod is laterally inside the side beam.

Preferably, the bearing pedestal has a parallelogram shape, and at least a portion of the connecting rod is bent to retract the edge segment.

1 is a structural schematic diagram of a specific embodiment of a bogie provided by the present application; FIG. FIG. 2 is a plan view of FIG. 1; It is a connection structure diagram of a side beam, a horizontal beam, and a vertical beam. It is a structural schematic diagram of a hinge connection mechanism. FIG. 3 is a locally enlarged view of a butting point between a support portion and a support groove. It is a structural schematic diagram of a 1st hinge connection stand. FIG. 7 is a front view of FIG. 6; FIG. 2 is a schematic diagram of the local structure of the bogie provided by the present application at a bottom viewing angle;

In order for those skilled in the art to better understand the technical solution of the present application, the present application will be described in more detail below in combination with drawings and specific embodiments.

The terms "first", "second", etc. used herein are not intended to imply any particular limitation on order and/or importance, but rather refer to two or more structures or members that are similar or similar in structure and/or function. This is for convenience.

In this specification, the traveling direction of a railway train is referred to as the longitudinal direction, the direction perpendicular to the longitudinal direction within the traveling plane of the railway train is referred to as the horizontal direction, the direction perpendicular to the traveling plane of the railway train is referred to as the vertical direction, and the direction perpendicular to the traveling plane of the railway train is referred to as the vertical direction. The direction also refers to the vertical direction, with the direction relatively close to the running plane being defined as the bottom, and the direction relatively away from the running plane being defined as the top.

1 to 3, FIG. 1 is a structural schematic diagram of a specific embodiment of the bogie provided by the present application, FIG. 2 is a plan view of FIG. 1, and FIG. 3 is a side beam, cross beam and It is a connection structure diagram of a longitudinal beam.

As shown in FIGS. 1 to 3, the present application provides a bogie for connecting a wheel pair 6 and a vehicle body, with a hinge connection mechanism 1 and a bogie extending along the longitudinal direction and spaced apart laterally. Both side beams 2 include a side beam 2 between which both cross beams 3 spaced apart in the vertical direction are connected, and the cross beams 3 are connected to an intermediate segment 31 and both sides of the intermediate segment 31. a longitudinal beam 4 is connected between the ends of both intermediate segments 31 on the same side in the lateral direction, the hinge connection mechanism 1 is attached to both longitudinal beams 4, and the edge segment At least a portion of 32 is laterally tapered inwardly in a direction away from intermediate segment 31 .

Here, "inside" is a position relatively close to the longitudinal centerline of the bogie, and the longitudinal centerline is a line that passes through the longitudinal center and extends in the lateral direction. It is.

According to the above structure, since the longitudinal pitch between the two intermediate segments 31 is large, a space is created for the installation of the hinge connection mechanism 1, and at least a part of both the edge segments 32 is horizontally connected to the intermediate segment 31. By gradually inclining inward in the direction away from the bogie, it creates space for the brake mechanism 7, reduces the wheelbase of the bogie, strengthens its ability to pass through small curves, and further reduces rim wear. to extend the reshaping cycle and save costs.

Here, the embodiment of the present application does not limit the lateral size of the edge segment 32, the lateral size of the sloped portion of the edge segment 32, and the included angle between the sloped portion of the edge segment 32 and the lateral direction. In the case of implementation, those skilled in the art can choose according to their actual needs and meet the usage requirements.

Generally, the side beam 2 is provided with an air spring unit (i.e., an air spring unit) for supporting the vehicle body, and the vertical size of the side beam 2 is adjusted to ensure sufficient support performance. By making both larger and reducing the vertical size of the cross beam 3, the weight of the bogie is reduced.

Thus, to accommodate the different vertical sizes of the intermediate segment 31 and the side beam 2, the vertical size of the edge segment 32 for connecting the intermediate segment 31 and the side beam 2 may vary. In detail, the vertical size of the connection point between the intermediate segment 31 and the edge segment 32 is smaller than the vertical size of the connection point between the side beam 2 and the edge segment 32, and the vertical size of at least a portion of the edge segment 32 is smaller than the vertical size of the connection point between the side beam 2 and the edge segment 32. , gradually becoming smaller in the lateral direction away from the intermediate segment 31.

Based on such size requirements, a box-shaped beam structure is adopted for the edge segment 32 to facilitate processing, and in this case, the top plate and bottom plate of the sloped portion of the edge segment 32 are both substantially parallel. It has a quadrilateral shape and is a circular tube beam structure in which the middle segments 31 are arranged to have the same diameter, and if a circular tube beam is adopted, it is more convenient to obtain.

Here, the above-mentioned solution of adopting a box-shaped beam structure for the edge segment 32 and adopting a circular tube beam structure for the intermediate segment 31 is only an exemplary explanation of the embodiment of the present application. In the case of implementation, other forms of beam structure may be adopted for the edge segment 32 and the intermediate segment 31 without affecting the implementation of the function.

As described above, the side beam 2 is normally provided with an air spring unit for connection to the vehicle body. For a bogie that connects two longitudinally adjacent car bodies, each side beam 2 is provided with two sets of air spring units arranged at intervals along the longitudinal direction. The air spring units connect one vehicle body, and each set of air spring units includes at least one air spring 21, and when in use, the air springs 21 are arranged to be connected in series.

In this way, the gas in each air spring 21 flows with each other, the internal pressure of each air spring 21 is kept the same, and in specific practice, if one altitude valve is used, the air in each air spring 21 is kept constant. It is possible to control refilling and discharging, realize synchronized lifting and lowering of both sides of the car body, simplify the control operation, and also prevent vertical addition inside the hinge connection mechanism 1 due to the difference in the number of people on both sides of the car body, that is, the difference in load. The load condition of the hinge connection mechanism 1 is improved by reducing the load.

Each air spring 21 is provided with an orifice (not shown), thereby functioning as a vertical vibration damping device. Therefore, the bogie provided by the present application is not provided with a vertical vibration damping device, which saves bogie space and reduces manufacturing costs.

Here, each air spring 21 is isolated from each other, and a solution is also possible to control the air replenishment and discharge by arranging an individual altitude valve for each air spring 21; A solution is also possible in which the spring 21 is not provided with an orifice and in addition a vertical damping device is arranged.

4 to 7, FIG. 4 is a structural schematic diagram of the hinge connection mechanism, FIG. 5 is a local enlarged view of the abutment area between the support part and the support groove, and FIG. 6 is a diagram of the first hinge connection mechanism. 7 is a schematic diagram of the structure, and FIG. 7 is a front view of FIG. 6.

Furthermore, as shown in FIG. 4, the hinge connection mechanism 1 includes a first hinge connection base 11 and a second hinge connection base 12, and the first hinge connection bases 11 are arranged at intervals in the horizontal direction. The support 111 includes both supports 111, and the support 111 is provided with a support groove 111a whose opening faces upward, and the longitudinal size of at least a portion of the support groove 111a gradually decreases from top to bottom to form a second hinge. The connecting base 12 is used to attach the core shaft 121, and support portions 121a are formed at both ends of the core shaft 121 in the axial direction, and the vertical size of at least a portion of the support portions 121a gradually decreases from top to bottom. It has become. In the assembled state, at least a part of the vertical wall surface of the portion of the support groove 111a where the vertical size gradually decreases is at least a portion of the groove side wall of the portion of the support groove 111a where the vertical size of the support groove 111a gradually decreases. Some of them are in contact.

Unlike the solutions in which a conventional U-shaped groove and a circular cross-section core shaft engage, the support part 121a of the embodiment of the present application is arranged such that at least a part thereof tapers from top to bottom. The solution in which the support groove 111a engages with the support groove 111a better guarantees the vertical positioning of the core shaft 121, and since the support part 121a and the groove side wall of the support groove 111a are in surface contact, the force receiving area is reduced. is larger, reducing stress concentration and extending the service life of the hinge connection mechanism 1.

Further, as shown in FIG. 5, the vertical size of at least the lower end of the support portion 121a gradually decreases from top to bottom, and includes two wedge-shaped surfaces 121a-1 disposed opposite to each other. A ridge 121a-3 is formed between the wedge-shaped surface 121a-1 and the bottom surface 121a-2, and the groove side wall of the support groove 111a is connected to the first side wall surface 111a-1. , a second side wall surface 111a-2 whose inclination matches the wedge-shaped surface 121a-1, the first side wall surface 111a-1 is below the second side wall surface 111a-2, and the first side wall surface 111a-1 and the second side wall surface 111a-2 transition by an arc surface, and the wedge-shaped surface 121a-1 contacts the second side wall surface 111a-2 and protrudes downward from the second side wall surface 111a-2, thereby creating a ridge. The portion 121a-3 is arranged in a suspended state. In this way, line contact between the support part 121a and the groove side wall of the support groove 111a is avoided, and the phenomenon of stress concentration is further avoided.

The groove bottom wall 111a-3 and the first side wall surface 111a-1 of the support groove 111a may be transitioned by an arc surface, thereby ensuring a smooth transition between the groove bottom wall 111a-3 and the groove side wall. In addition, the occurrence of stress weaknesses is avoided.

Continuing to refer to FIG. 4, a mounting plate 112 is provided on one side in the vertical direction of the first hinge connecting base 11 and the second hinge connecting base 12, and the mounting plates 112 of both are arranged to face each other in the vertical direction. , respectively connected to two vehicle bodies.

Combining FIGS. 6 and 7, a reinforcing block 113 is further provided on the side of the first hinge connecting base 11 that is away from the mounting plate 112 in the longitudinal direction of the support body 111, and at least one of the reinforcing blocks 113 is provided. The portion is located above the groove bottom wall of the support groove 111a. In this way, the cross-sectional area at the base of the support groove 111a of the first hinge connecting base 11 is increased, and the bending/shear resistance section modulus is increased, so that when transmitting longitudinal traction force and impact load, the support The body 111 has sufficient loading capacity.

The bogie provided by the present application further includes a tightening block 122 that is connected to the support 111 and tightens the core shaft 121. 4, the tightening block 122 is provided with three through holes, the two through holes on both sides in the vertical direction are connected to the support body 111 by assembling the connecting member, and the through hole in the middle is an empty hole. (A vertical hole is provided at the corresponding position of the core shaft 121), and engages with the workpiece to be removed, and performs structural separation between the core shaft 121 and the support 111, thereby preventing distortion due to metal inlay or interference fit. This solves the problem of difficulty in removal due to rust etc.

Hooks extending downward are further provided at both ends of the tightening block 122 in the vertical direction, and can be hooked to the two side walls of the support groove 111a, improving overall rigidity and loading performance. .

A single traction rod 114 is further connected to the first hinge connection base 11 for transmitting longitudinal traction force. In contrast to the double rod structure, the structure of the single traction rod 114 is simpler, lighter in weight, more convenient to maintain, and lower in cost. Of course, in the case of specific implementation, it is also possible to employ a double-rod structure.

Referring to FIG. 8, FIG. 8 is a schematic diagram of the local structure at the bottom viewing angle of the bogie provided by the present application.

The bogie provided by the present application further includes a rollover prevention torsion bar device 5 including a torsion bar 51, a torque arm 52, and a connecting rod 53, and bearing stands 511 are provided at both ends of the torsion bar 51. , the torsion bar 51, the torque arm 52, the connecting rod 53, and the bearing stand 511 are not limited to the connection structure, and when specifically implemented, those skilled in the art may refer to the prior art for arrangement.

Specifically, in the embodiment of the present application, as shown in FIG. This reduces the lateral size of the connecting rod 53, effectively saving the bogie space and further reducing the inter-spring mass of the bogie.

Since the edge segment 32 has an inclined portion, the bearing pedestal 511 has a parallelogram shape to fit the bottom plate of the edge segment 32. There is a bend in at least a portion of the connecting rod 53, thereby relieving the beveled design of the edge segment 32.

The above are only preferred embodiments of the present invention, and it should be understood that those skilled in the art may make some improvements and modifications without departing from the principles of the present invention. It falls within the protection scope of the present invention.

1...Hinge connection mechanism;
11...first hinge connection stand;
111...Support;
111a...Support groove;
111a-1...first side wall surface;
111a-2...Second side wall surface;
111a-3...Groove bottom wall;
112...Mounting plate;
113...Reinforcement block;
114...Single towing rod;
12...Second hinge connection stand;
121...core axis;
121a...Support part;
121a-1...cuneiform surface;
121a-2 ...bottom surface;
121a-3...ridge;
122...Tightening block;
2...Side beam;
21...Air spring;
3...Horizontal beam;
31 ... middle segment;
32...edge segment;
4...Longitudinal beam;
5... Rollover prevention torsion bar device;
51...Torsion bar;
511...Bearing stand;
52...Torque arm;
53...Connecting rod;
6...Ring pair;
7...Brake mechanism.

Claims (13)

comprising a hinge connection mechanism (1) and two laterally spaced side beams (2) extending along the longitudinal direction, and between the two said side beams (2) there is a A bogie connected to two cross beams (3) spaced apart from each other, said cross beams (3) having an intermediate segment (31) and an edge segment (32) on either side of said intermediate segment (31). , a longitudinal beam (4) is connected between the ends of the two intermediate segments (31) on the same side in the lateral direction, and the hinge connection mechanism (1) connects the two longitudinal beams (4). ), characterized in that at least a part of said edge segment (32) is gradually sloped inwards along the direction away from said intermediate segment (31) in the transverse direction. The vertical size of the connection point between the intermediate segment (31) and the edge segment (32) is smaller than the vertical size of the connection point between the side beam (2) and the edge segment (32), and the edge segment 2. Bogie according to claim 1, characterized in that the vertical size of at least a portion of (32) gradually decreases laterally away from said intermediate segment (31). Bogie according to claim 2, characterized in that the edge segment (32) is of box beam structure and the intermediate segment (31) is of circular tube beam structure. Each of the side beams (2) is provided with two sets of air spring units arranged at intervals along the longitudinal direction, and each set of air spring units has at least one air spring ( 21), each said air spring (21) being arranged in series connection. Bogie according to claim 4, characterized in that each of the air springs (21) is provided with an orifice, and the bogie is not provided with a vertical vibration damping device. The hinge connection mechanism (1) includes a first hinge connection base (11) and a second hinge connection base (12), and the first hinge connection base (11) is arranged with an interval in the lateral direction. The support member (111) is provided with a support groove (111a) whose opening faces upward, and the longitudinal size of at least a portion of the support groove (111a) is upward. The second hinge connecting base (12) is used to attach the core shaft (121), and support parts (121a) are formed at both ends of the core shaft (121) in the axial direction. The vertical size of at least a portion of the support portion (121a) gradually decreases from top to bottom, and in the assembled state, the vertical size of at least a portion of the support portion (121a) gradually decreases. Any one of claims 1 to 5, wherein at least a part of the direction wall surface is in contact with at least a part of the groove side wall of a portion of the support groove (111a) where the longitudinal size gradually decreases. or the bogey described in paragraph 1. The vertical size of at least the lower end portion of the support portion (121a) gradually decreases from top to bottom, and includes two wedge-shaped surfaces (121a-1) arranged oppositely, and the two wedge-shaped surfaces (121a-1) are connected by a bottom surface (121a-2), and a ridge (121a-3) is formed between the wedge-shaped surface (121a-1) and the bottom surface (121a-2),
The groove side wall of the support groove (111a) includes a first side wall surface (111a-1) and a second side wall surface (111a-2) whose inclination matches the wedge-shaped surface (121a-1), The first side wall surface (111a-1) is below the second side wall surface (111a-2), and the first side wall surface (111a-1) and the second side wall surface (111a-2) are connected by an arc surface. The wedge-shaped surface (121a-1) contacts the second side wall surface (111a-2) and protrudes downward from the second side wall surface (111a-2), so that the ridge portion (121a-1) 7. The bogie according to claim 6, wherein the bogie 3) is arranged in a suspended state. The bogie according to claim 7, wherein the groove bottom wall (111a-3) of the support groove (111a) and the first side wall surface (111a-1) transition by an arc surface. A mounting plate (112) for coupling with the vehicle body is provided on one side of the first hinge connecting base (11) in the longitudinal direction, and a mounting plate (112) is provided in the vertical direction of the support body (111). A reinforcing block (113) is provided on the remote side, and at least a part of the reinforcing block (113) is above the groove bottom wall (111a-3) of the support groove (111a). Bogey as described in item 6. The bogie according to claim 6, further comprising a tightening block (122) connected to the support (111) and tightening the core shaft (121). The bogie according to claim 6, characterized in that a single traction rod (114) is further connected to the first hinge joint (11). It further includes a rollover prevention torsion bar device (5) including a torsion bar (51), a torque arm (52), and a connecting rod (53), and bearing stands (511) are provided at both ends of the torsion bar (51). Claim 1 - characterized in that the bearing pedestal (511) is provided at the bottom of the edge segment (32) and the connecting rod (53) is laterally inside the side beam (2). 5. The bogey described in any one of Item 5. 13. The bearing pedestal (511) has a parallelogram shape, and at least a portion of the connecting rod (53) is bent to retract the edge segment (32). bogey.

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