Front-end buffer device for streetcar

Abstract

The invention discloses a front-end buffer device for a streetcar. The front-end buffer device for the streetcar comprises an anti-crawling tooth, a connecting plate, a rubber buffer device, energy absorption pipes, installation seats and square guide rods; the connecting plate is located between the anti-crawling tooth and the rubber buffer device; the square guide rods penetrate through the rubber buffer device; one end of each square guide rod is connected with the connecting plate, and the other end of each square guide rod is inserted into the front end of the streetcar; the energy absorption pipes are arranged between the installation seats and the rubber buffer device; and the square guide rods are sleeved with the energy absorption pipes correspondingly. Compared with the prior art, the front-end buffer device for the streetcar has an elastic energy absorption buffer function and a plastic deformation buffer function, and has a second-stage of energy absorption effect; in low-speed crush, only the rubber buffer device transforms elastically, and no other parts are damaged, that is, no other parts need replacing; and in high-speed crush, the rubber buffer device transforms first, plastic deformation of the energy absorption pipes occurs and energy is absorbed when the rubber buffer device can not continue transforming, the energy absorption capability of a vehicle in crush is effectively improved.

Description

technical field [0001] The invention relates to a collision energy absorbing and buffering structure, in particular to a front-end buffering device for a tram, belonging to the field of rail transit vehicle structure design. Background technique [0002] Trams are road vehicles. According to the EN 15227 standard, the collision performance of trams must meet the requirements of the same train for frontal collision and side collision with obstacles. Therefore, an energy-absorbing buffer device must be installed at the front end of the train. At present, the buffer device used in the tram is composed of a C-shaped anti-collision beam at the front and two energy-absorbing elements at the rear. The anti-collision beam and the energy-absorbing element are connected to the car body chassis through fasteners. [0003] The disadvantage of this structure is that the stroke of the energy-absorbing element is long, and it needs to occupy a large installation space in the direction of t...

AI Technical Summary

Problems solved by technology

[0003] The disadvantage of this structure is that the stroke of the energy-absorbing element is long, and it needs to occupy a large installation space in the direction of the vehicle length, and the diameter of the energy-absorbing element is relatively large, and the mounting seat of the energy-absorbing device is relatively large, which causes the impact of the entire buffer device on the height direction. When the folding coupler is unfolded, when the vehicle needs to be connected and operated, the buffer device needs to be lifted to complete the unfolding of the folding coupler and the connecting of the vehicle

At this time, although the vehicle can be connected normally, the vehicle has lost the collision protection function.

Therefore, a compact buffer device structure is needed to solve the problems of lack of installation space and the inability of vehicles to be directly connected

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