Railway vehicle and high-low floor underframe structure thereof
A rail vehicle and low floor technology, applied in the field of rail transit, can solve the problems of low power transmission efficiency, large welding volume, low operating speed, etc., and achieve the effect of meeting structural strength requirements, improving construction manufacturability, and controlling welding volume.
Active Publication Date: 2020-11-20
CRRC QINGDAO SIFANG CO LTD
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Problems solved by technology
[0002] At present, low-floor structures are mostly used for urban trams with low operating speeds. The transitional areas between high and low floors are mostly plate-beam tailor-welded slope structures or step structures, with many parts, relatively complex structures, and a large amount of welding.
Based on the low operating speed of existing vehicles, the design strength of existing low-floor structures is usually relatively low, and the power transmission efficiency is low, which cannot meet the requirements of TSI standards
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[0027] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings and specific embodiments.
[0028] See figure 1 and figure 2 ,in, figure 1 The high and low floor underframe structure described in this embodiment is shown, figure 2 for figure 1 side view.
[0029] The underframe is used for low-floor vehicles so that the high-floor and middle low-floor transition area above the bogie at the end of the car body has better strength and longitudinal load bearing capacity. It can be understood that the two longitudinal ends of the car body are symmetrically arranged with the same structure. In order to clearly show the core invention of the application, only one end structure of the underframe is shown in the figure.
[0030] The underframe is an integral installation frame, and its connecting beam 1, side bea...
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The invention discloses a railway vehicle and a high-low floor underframe structure thereof. The high-low floor underframe structure comprises two side beams, two traction beams and a connecting beam;the two traction beams are symmetrically arranged on the two sides of the longitudinal center line of a vehicle body. The two ends of the connecting beam are fixedly connected with the two side beamsrespectively and the connecting beam is a sectional material with the L-shaped cross section; the connecting beam is configured in such a manner that the outer end face of the vertical section of theconnecting beam is fixedly connected with the inner side ends of the two traction beams in a lateral projection plane, and the inner end face of the horizontal section of the connecting beam is usedfor being fixedly connected with the outer side end of a low floor assembly. According to the scheme, through structural optimization, the overall bearing capacity of the underframe can be effectivelycoordinated, and on the basis that the structure is simplified, the high strength requirement and the high power transmission requirement can be met.
Description
technical field [0001] The invention relates to the technical field of rail transportation, in particular to a rail vehicle and its high-low floor underframe structure. Background technique [0002] At present, low-floor structures are mostly used for urban trams with low operating speeds. The transitional areas between high and low floors are mostly plate-beam tailor-welded slope structures or step structures, with many parts, relatively complex structures, and a large amount of welding. Based on the low operating speed of existing vehicles, the design strength of existing low-floor structures is usually relatively low, and the power transmission efficiency is low, which cannot meet the requirements of TSI standards. [0003] In view of this, it is urgent to find another way to optimize the high-low floor chassis connection structure of low-floor vehicles to meet the strength and power transmission requirements of higher-speed EMUs. Contents of the invention [0004] In ...
Claims
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Login to View More IPC IPC(8): B61F1/08B61F1/14
CPCB61F1/08B61F1/14
Inventor 王建军田洪雷李陆星蔡军爽肖婵娟
Owner CRRC QINGDAO SIFANG CO LTD