阅读说明：本技术 一种转向架构架及转向架 (Bogie frame and bogie ) 是由 李小川 贺世忠 李小燕 喻佳文 张文涛 于 2019-10-11 设计创作，主要内容包括：本发明公开了一种转向架构架及转向架,构架包括两根并列设置且固连的横梁,所述横梁具有贯穿横梁长度方向两个端面的中空通道,所述中空通道中穿设有扭杆,所述扭杆的中部与横梁固连,所述扭杆的两端伸出所述中空通道外且固连有侧梁。借由上述分体式柔性构架结构,当横梁相对轮对发生垂向运动时,在侧梁的作用下,扭杆会产生扭转变形。扭杆扭转变形产生的作用力会通过侧梁作用在轮对和横梁之间,从而限制限制横梁相对轮对的垂向运动并提供一系悬挂刚度。从而无需使用弹簧来提供一系悬挂刚度,简化了转向架结构。(The invention discloses a bogie frame and a bogie, wherein the frame comprises two cross beams which are arranged in parallel and fixedly connected, each cross beam is provided with a hollow channel penetrating through two end faces of the cross beam in the length direction, a torsion bar penetrates through the hollow channel, the middle part of the torsion bar is fixedly connected with the cross beam, and two ends of the torsion bar extend out of the hollow channel and are fixedly connected with side beams. By means of the split type flexible framework structure, when the transverse beam moves vertically relative to the wheel pair, the torsion bar can generate torsional deformation under the action of the side beam. Forces generated by torsional deformation of the torsion bar act between the wheelset and the cross-member through the side beams to limit vertical movement of the cross-member relative to the wheelset and provide a degree of suspension stiffness. Thus, no spring is required to provide a suspension stiffness and the bogie structure is simplified.)

1. The bogie frame is characterized by comprising two cross beams (1) which are arranged in parallel and fixedly connected, wherein each cross beam (1) is provided with a hollow channel (11) penetrating through two end faces of the cross beam (1) in the length direction, a torsion bar (2) penetrates through each hollow channel (11), the middle part of each torsion bar (2) is fixedly connected with each cross beam (1), and two ends of each torsion bar (2) extend out of the corresponding hollow channel (11) and are fixedly connected with side beams (4).

2. The bogie frame of claim 1, wherein the bogie frame provides a primary suspension stiffness for a rail vehicleWherein k is_LThe torsional rigidity of the torsion bar section between the middle part of the torsion bar (2) and the side beam (4) is shown, and a is the distance between the central axis of the torsion bar and the central axis of the vehicle wheel pair (5).

3. The bogie frame according to claim 2, characterized in that the middle part of the torsion bar (2) is secured to the cross beam (1) by means of a mounting seat (6).

4. The bogie frame according to any of claims 1-3 wherein the two ends of the cross beam are symmetrically provided with connecting seats (7), the connecting seats (7) are fixedly connected with both cross beams (1), and the end of the torsion bar (2) penetrates through the corresponding connecting seat (7) and is fixed with the corresponding side beam (4).

5. Bogie frame according to claim 4 characterized in that the ends of the torsion bar (2) are connected to the respective connection seats (7) by rubber joints (3).

6. The bogie frame of claim 5, wherein the bogie frame provides a primary suspension stiffness for the railway vehicleWherein k is_LIs the torsional stiffness, k, of the torsion bar section between the mid-section of the torsion bar (2) and the side beam (4)_RThe torsional rigidity of the rubber joint (3) is shown, and a is the distance between the central axis of the torsion bar and the central axis of the vehicle wheel pair (5).

7. A bogie according to any of claims 1 to 6, comprising a bogie frame according to any of claims 1 to 6, a wheel pair (5) being attached between the two side beams (4) on each torsion bar (2).

Technical Field

The invention relates to the technical field of vehicle steering, in particular to a bogie frame and a bogie.

Background

The frame and the primary suspension device are widely applied to various railway freight cars, passenger cars, motor train units, subways and other vehicles at home and abroad. The framework mainly has the functions of installing bogie equipment, bearing weight, transmitting traction force and braking force; the primary suspension device mainly plays a role in damping vibration and adjusting wheel weight deviation. The existing primary suspension devices all adopt springs to provide primary vertical rigidity, and are complex in structure and high in manufacturing cost and maintenance cost.

Disclosure of Invention

The invention aims to overcome the defects of the prior art, provides a bogie frame capable of providing primary suspension rigidity, and correspondingly provides a bogie with the bogie frame.

In order to solve the technical problems, the invention adopts the following technical scheme:

a bogie frame comprises two cross beams which are arranged side by side and fixedly connected, wherein each cross beam is provided with a hollow channel penetrating through two end faces of the cross beam in the length direction, a torsion bar penetrates through the hollow channel, the middle part of the torsion bar is fixedly connected with the cross beam, and two ends of the torsion bar extend out of the hollow channel and are fixedly connected with side beams.

By means of the split type flexible framework structure, when the transverse beam moves vertically relative to the wheel pair, the torsion bar can generate torsional deformation under the action of the side beam. Forces generated by torsional deformation of the torsion bar act between the wheelset and the cross-member through the side beams to limit vertical movement of the cross-member relative to the wheelset and provide a degree of suspension stiffness. Thus, no spring is required to provide a suspension stiffness and the bogie structure is simplified.

As a further improvement of the above technical solution:

the bogie frame provides primary suspension stiffness for the rail vehicleWherein k is_LIs the torsional stiffness of the torsion bar section between the torsion bar mid-section and the side beam, a being the torsion bar centreThe spacing between the axis and the central axis of the vehicle wheel set.

The middle part of the torsion bar is fixedly connected with the cross beam through the mounting seat.

And connecting seats are symmetrically arranged at two ends of the cross beams, the connecting seats are fixedly connected with the two cross beams, and the end part of the torsion bar penetrates through the corresponding connecting seats and then is fixed with the corresponding side beam.

The end part of the torsion bar is connected with the corresponding connecting seat through a rubber joint. Torsional deformation of the rubber joint can be further utilized to provide a series of suspension stiffness.

The bogie frame provides primary suspension stiffness for the rail vehicleWherein k is_LIs the torsional stiffness, k, of the torsion bar section between the torsion bar mid-section and the side beam_RAnd a is the distance between the central axis of the torsion bar and the central axis of the vehicle wheel pair.

As a general inventive concept, the present invention further provides a bogie frame, comprising the above bogie frame, wherein a wheel pair is fixedly connected between two side beams on each torsion bar.

Compared with the prior art, the invention has the advantages that:

the torsion bar of the split flexible framework and the torsion change of the rubber joint are utilized to provide primary suspension rigidity; no springs are required to provide a primary suspension stiffness, simplifying the bogie structure.

Drawings

Fig. 1 is a schematic view of an exploded structure of a bogie frame of the present invention.

Fig. 2 is a schematic top view of the truck frame of the present invention.

Fig. 3 is a side view of the truck frame of the present invention.

Fig. 4 is a schematic top view of the bogie of the present invention.

Fig. 5 is a side view of the bogie of the present invention.

Illustration of the drawings: 1. a cross beam; 2. a torsion bar; 3. a rubber joint; 4. a side beam; 5. a wheel set; 6. a mounting seat; 7. a connecting seat.

Detailed Description

The invention is further described below with reference to specific preferred embodiments, without thereby limiting the scope of protection of the invention.