CN102190002B

CN102190002B - Steering frame of linear motor

Info

Publication number: CN102190002B
Application number: CN 201010607723
Authority: CN
Inventors: 宋晓文; 李言义; 周业明; 张月军; 张雄飞; 于春广; 董晓红; 周建乐
Original assignee: CSR Qingdao Sifang Locomotive and Rolling Stock Co Ltd
Current assignee: CRRC Qingdao Sifang Co Ltd; CSR Industrial Research Institute Co Ltd
Priority date: 2010-12-27
Filing date: 2010-12-27
Publication date: 2013-07-31
Anticipated expiration: 2030-12-27
Also published as: CN102190002A

Abstract

The invention relates to a steering frame of a linear motor, which performs improvement against the base structure of a framework, and can improve the rigidity and the strength of the framework through the X-shaped overall structure, improve the torque impact on the framework caused by the weight on a vehicle when the steering frame moves on a curved line with an excessive angle at high speed and improve the safety coefficient of the vehicle during high-speed driving. The steering frame comprises two wheel pairs, axles for connecting each wheel pair respectively, an axle box body and a support box body, wherein the axle box body and the support box body are sheathed at axle journals of the axles, wherein the framework is carried and mounted on the axle box body, the linear motor is suspended on a transverse suspension beam through a vertical suspension rod, and two ends of the transverse suspension beam are mounted on the support box body through elastic nodes. The framework comprises side beams, a cross beam and end beams, which are welded and assembled, and the two side beams are oppositely bent to the inner sides for forming the X-shaped overall structure. The X-shaped overall structure can effectively improve the rigidity and the strength of the framework, further optimizing the torque impact on the steering frame when moving on the curved line with the excessive angle at the high speed, and provide more reliable safety guarantee for high-speed driving of the steering frame.

Description

Linear motor bogie

Technical Field

The invention relates to a linear motor bogie applied to a railway vehicle, and belongs to the field of mechanical manufacturing.

Background

Along with the rapid development of urban rail transit in China, the linear motor bogie gradually gains the leading advantages of the whole technology and the acceptance of the market by virtue of smaller overall dimension and weight, larger external installation space and optimized wheel pair guiding capability.

In the technical scheme adopted in the prior art, a linear motor is arranged below a supporting box body at the axle journal of an axle through a pair of transverse suspension beams. To ensure that the transverse suspension beam can perform a limited axial rotation about its mounting point in order to cope with small oscillations of the linear motor relative to the bogie during the travel of the vehicle, the transverse suspension beam is usually elastically supported on the supporting box by rubber joints.

In such a linear motor bogie, in order to further improve the running speed and the stability during passing a curve, it is necessary to reduce the weight of the frame and the primary suspension system as much as possible, but at the same time, it is necessary to ensure the rigidity and strength of the entire frame so as to cope with the influence of torque caused by the relative position of the bogie and the vehicle body during passing a curve at an excessively large angle.

The unsprung mass of a primary suspension system is large, which is not conducive to reducing the wear resistance of the wheel and correspondingly brings about the problem of adjusting the suspension height of the linear motor.

In addition, the existing external brake disc structure can form a shoulder pole effect between the wheel sets on the two sides when the wheel sets pass through a corner at a high speed, and the stress condition of the wheel sets at the two ends of each set of axle needs to be improved.

In view of this, the present patent application is specifically proposed.

Disclosure of Invention

The invention aims to solve the problems in the prior art, and aims to improve a framework foundation structure, improve the rigidity and strength of the framework through an X-shaped integral structure, improve the influence of torque generated by the weight on the framework when the bogie is in a high-speed over-large angle curve, and improve the safety factor when a vehicle runs at a high speed.

Another object of the invention is to optimize and reduce the unsprung mass of a primary suspension system to facilitate wheel wear performance during high speed travel.

The invention also aims to improve the vehicle braking structure and reduce the shoulder pole effect between the wheel pairs on the two sides.

In order to achieve the above object, the linear motor bogie mainly comprises:

2 sets of wheel pairs, connecting the axles of each set of wheel pairs,

a shaft box body and a supporting box body which are sleeved at the axle neck of the axle through a bearing,

the framework is loaded and arranged on the axle box body,

the linear motor is suspended on the transverse suspension beam through the vertical suspension rod, and two ends of the transverse suspension beam are installed on the supporting box body through elastic nodes.

The difference from the prior art is that the framework consists of side beams, cross beams and end beams which are welded and assembled, and the two side beams are oppositely bent inwards to form an X-shaped integral structure.

According to the characteristics of the basic scheme, the rigidity and the strength of the framework can be effectively improved by the X-shaped overall structure, so that the torque influence on the bogie during high-speed overlarge angle curve is optimized, and more reliable safety guarantee is provided for the bogie during high-speed running.

In order to effectively reduce the unsprung mass of the primary suspension system, a supplementary optimization scheme can be adopted that the whole side beams are of a hollow box-shaped welding structure, the cross beams are hollow seamless steel tubes, and two ends of the cross beams respectively penetrate through the side beams on two sides and are in welding connection with the side beams.

The structural improvement is based on the design idea of light weight of a framework, and the beam made of seamless steel tubes can also be used as an additional air chamber of the air spring.

In order to deal with the wheel pair manufactured by the EN standard and further reduce the unsprung mass, the axle has a hollow structure with full length, and a straight plate type wheel disc brake device is arranged below the end beam.

By reducing unsprung mass and adopting a straight-amplitude plate type braking structure, the anti-wear performance of the wheel set can be enhanced, the wheel-rail relation is further improved, and the adjustment of the suspension height of the linear motor is reduced.

As described above, the linear motor bogie of the present invention has the advantages and beneficial effects of:

1. the rigidity and the strength of the framework are improved by the X-shaped integral structure, the influence of torque generated by the weight on the framework when a curve with an overlarge angle at a high speed is obviously optimized and improved, and the safety factor of high-speed running of the vehicle is higher.

2. The unsprung mass of the primary suspension system is optimized and reduced to facilitate wheel wear resistance during high speed travel.

3. The brake structure of the vehicle is improved, and the shoulder pole effect between the wheel pairs on the two sides is reduced.

Drawings

The invention will now be further described with reference to the following drawings

FIG. 1 is a schematic view of the linear motor truck;

as shown in fig. 1, a frame 1, a wheel pair 2, an air spring 3, a central traction device 4, a transverse suspension beam 5, a straight plate type wheel disc brake device 6, a current collector 7, a linear motor 8, an electric control pipeline 9, an axle 10, an axle box body 11, a support box body 12, a vertical suspension rod 13, a side beam 14, a cross beam 15 and an end beam 16.

Detailed Description

Embodiment 1, as shown in fig. 1, the linear motor bogie mainly includes:

2 sets of wheel pairs 2, an axle 10 connecting each set of wheel pairs 2,

a shaft case 11 and a support case 12 journaled to the axle 10 by bearings,

the frame 1 is bearing-mounted on the axle box body 11,

the linear motor 8 is suspended on the transverse suspension beam 5 through a vertical suspension rod 13, and two ends of the transverse suspension beam 5 are installed on the supporting box body 12 through elastic nodes.

The frame 1 is composed of welded assembled side beams 14, cross beams 15 and end beams 16. Wherein,

the two side members 14 are bent inward in opposite directions to form an X-shaped integral structure, and the whole side member 14 is a hollow box-shaped welded structure.

The cross beam 15 is a hollow seamless steel pipe, two ends of the cross beam 15 respectively penetrate through the side beams 14 on two sides and are welded and connected with the side beams, and the cross beam 15 is used as an additional air chamber of the air spring 3 to reduce the unsprung mass of a primary suspension system.

The axle 10 has a hollow structure throughout its length, and a straight panel disc brake device 6 is mounted below the end beam 16.

The straight-amplitude plate type wheel disc braking device 6 can reduce the shoulder pole effect of the two side wheel sets 2 caused by the external arrangement of the brake disc, and improve the stress balance.

The central traction device 4 adopts a Z-shaped full-elastic gapless traction structure to optimize the traction rigidity and isolate the transmission of longitudinal telescopic vibration of the bogie to the bending mode vibration of the vehicle body through the central pin.

Claims

1. A linear motor bogie comprises the following structures: the device comprises a framework (1), wheel sets (2), air springs (3), a central traction device (4), a transverse suspension beam (5), a straight-amplitude plate type wheel disc braking device (6), a current collector (7), a linear motor (8), a vehicle axle (10) connected with each wheel set (2), an axle box body (11), a supporting box body (12) and a vertical suspension rod (13);

the axle box body (11) and the supporting box body (12) are respectively sleeved at the axle neck of the axle (10) through bearings;

the framework (1) is arranged on the axle box body (11) in a bearing way;

the linear motor (8) is suspended on the transverse suspension beam (5) through a vertical suspension rod (13), and two ends of the transverse suspension beam (5) are mounted on the supporting box body (12) through elastic nodes;

the method is characterized in that: the axle box body (11) and the supporting box body (12) are respectively positioned at two sides of the wheel;

the framework (1) consists of side beams (14), cross beams (15) and end beams (16) which are welded and assembled, and the two side beams (14) are oppositely bent inwards to form an X-shaped integral structure;

the whole side beam (14) is of a hollow box-shaped welding structure, the cross beam (15) is a hollow seamless steel pipe, two ends of the cross beam (15) penetrate through the side beams (14) on two sides respectively and are in welding connection with the side beams, and the cross beam (15) is also used as an additional air chamber of the air spring (3) to reduce the unsprung mass of a primary suspension system;

the axle (10) is of a hollow structure with a full length, and the straight-width plate type wheel disc brake device (6) is mounted below the end beam (16); the straight-amplitude plate type wheel disc braking device (6) can reduce the shoulder pole effect of the wheel sets (2) at two sides caused by the external arrangement of the brake disc and improve the stress balance;

the central traction device (4) adopts a Z-shaped full-elastic gapless traction structure.