CN103303332A

CN103303332A - 70% low floor light rail unpowered bogie

Info

Publication number: CN103303332A
Application number: CN2013101814731A
Authority: CN
Inventors: 韩俊臣; 强锋; 张赛; 高纯友; 薛文根; 谷晓鹏; 于忠建; 郭璇
Original assignee: Changchun Railway Vehicles Co Ltd
Current assignee: CRRC Changchun Railway Vehicles Co Ltd
Priority date: 2013-05-16
Filing date: 2013-05-16
Publication date: 2013-09-18
Anticipated expiration: 2033-05-16
Also published as: CN103303332B

Abstract

The invention relates to a 70% low floor light rail unpowered bogie which is characterized in that side beams are welded with three sections of square tubes by adopting Z-shaped transition parts; secondary spring seats of a cantilever beam structure are welded on the Z-shaped transition parts on the outer sides of the side beams of a bogie framework. The bogie adopts the Z-shaped transition parts, not only effectively connects the square tubes at the end parts and the middle parts of the side beams, but also realizes a lager vertical height difference between the end parts and the middle parts of the side beams, and ensures the dropping of the vehicle bottom board surface in the middle of the 70% low floor light rail. The secondary spring seats of the cantilever beam structure are also welded on the Z-shaped transition parts on the outer sides of the side beams; the height of the secondary spiral springs is effectively increased; the hanging rigidity is reduced; and meanwhile the longitudinal span of two secondary steel springs on one side of the bogie is enabled to be larger.

Description

70% low floor light rail unpowered bogie

Technical field

The present invention relates to a kind of 70% low floor light rail unpowered bogie.Relate in particular to the lower low floor vehicle unpowered bogie of a kind of centre unpowered module hull bottom plate face height.

Background technology

At present domestic existing, successfully realize the light rail of commercial operation, only Changchun Light Rail is very few, but unpowered module base plate face height is inconsistent in the middle of its unpowered bogie, can't satisfy the consistent and lower requirement of modern low floor vehicle low country base plate face height.

Summary of the invention

For satisfying the domestic and international market to the tight demand of modern low-floor light rail vehicle, the foreign mature experience, by change steering structure shelf structure and secondary suspension structure, develop go out a kind of guarantee in the middle of the unpowered bogie of basically identical and novel 70% low-floor light rail vehicle that whole height is lower of unpowered module base plate face height.

For achieving the above object, the invention provides a kind of 70% low floor light rail unpowered bogie, it is characterized in that:

Curb girder adopts zigzag transition piece and three sections square tubes solderings; The secondary spring seat of cantilever beam structure is welded on the truck frame curb girder zigzag transition piece outside.

The present invention adopts the zigzag transition piece, has not only effectively connected the square tube at truck side sill end and middle part, has also realized the larger vertical diff-H at curb girder end and middle part, guarantees the reduction of the middle car bottom plate face of 70% low floor light rail.On the zigzag transition piece of the curb girder outside, be welded with equally the secondary spring mount pad of cantilever beam structure, effectively to improve two be the coil spring height, when reducing suspension stiffness also so that two two of bogie truck one side are that the vertical span of steel spring is larger.

Description of drawings

Fig. 1 structural representation of the present invention;

Fig. 2 is the upward view of Fig. 1;

Fig. 3 framework schematic diagram of the present invention;

Fig. 4 secondary suspension device schematic diagram.

The specific embodiment

With reference to Fig. 1, Fig. 2, unpowered bogie mainly is comprised of truck frame 1, independent axle Biodge device 2, single stage suspension device 3, secondary suspension device 4, central traction apparatus 5, foundation brake rigging 6, bogie truck accessory equipment 7.

With reference to Fig. 3, adopt zigzag transition piece 8, not only effectively connected the square tube 10 of truck side sill end 9 with the middle part, also realized the larger vertical diff-H at curb girder end and middle part, guarantee the reduction of the middle car bottom plate face of 70% low floor light rail.

With reference to Fig. 4, on the curb girder outside, zigzag transition piece, be welded with equally the secondary spring mount pad 11 of cantilever beam structure, effectively improving two is coil spring 12 height, goes back so that two two of bogie truck one side are that steel spring 12 vertical spans are larger when reducing suspension stiffness.

Claims

1. low floor light rail unpowered bogie, comprise truck frame, independent axle Biodge device, secondary suspension device, central traction apparatus, foundation brake rigging, bogie truck accessory equipment, it is characterized in that: curb girder adopts zigzag transition piece and three sections square tubes solderings, and the secondary spring seat of cantilever beam structure is welded on the truck frame curb girder zigzag transition piece outside.