Unlock instant, AI-driven research and patent intelligence for your innovation.

Crash absorbers especially for rail vehicles

A technology for rail vehicles and buffers, which is applied in the direction of shock absorbers, shock absorbers, elastic shock absorbers, etc., and can solve the problem that the force-displacement characteristic curve does not have a linear trend

Active Publication Date: 2020-03-06
ZF FRIEDRICHSHAFEN AG
View PDF10 Cites 0 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0006] The main problem with such crash absorbers is that the force-displacement characteristic curve does not have a linear course, but instead develops in an alternating fashion at first and then at a constant force level

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Crash absorbers especially for rail vehicles
  • Crash absorbers especially for rail vehicles
  • Crash absorbers especially for rail vehicles

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0023] figure 1 A crash absorber 1 is shown in simplified form, which is used, for example, in particular for rail vehicles. The crash absorber 1 comprises at least one deformation tube 3 which is connected at the end side to a common crash plate 5 . The crash plate 5 forms the frontmost plane of the vehicle and thus establishes a contact between an obstacle (not shown) and the crash bumper 1 . At the other end, the crash absorber 1 has a retaining plate 7 on which the deformation tube 3 is fastened to the vehicle.

[0024] A form 9 is connected to the holding plate 7 , the form having a forming surface 11 on its inner diameter. The profiled surface 11 has a radius r at an angle α relative to the axis of motion 17 of the crash absorber 1 1 The inner guide surface 13 extends until it has a radius r 2 The outer guide surface 15. The angle α enclosed between the forming surface 11 and the axis of movement 17 is smaller than 90°.

[0025] The deformation tube 3 has a first ...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention relates to an impact absorber (1), in particular for a rail vehicle, comprising at least one deformation pipe (3), which is connected to an impact plate (5), and which in an impact event, is moved along a matrix (9) having a conical forming surface (11). The deformation pipe (3) has a cone region (25), which is in overlap with the forming surface (11) of the matrix (9). The forming surface (11) of the matrix (9) and the cone region (25) enclose a differing angle (α, β) with respect to an axis of movement (17) of the deformation pipe (3).

Description

technical field [0001] The invention relates to a crash absorber according to the preamble of claim 1 . Background technique [0002] Any rail vehicle has crash bumpers to absorb energy in the event of a crash. In this case, irreversible damage to the crash absorber is deliberately taken into account by the deformation tube being pressed by the vehicle-side deformation die and / or the deformation tube being crimped. [0003] The energy reduction to be performed by the crash absorber generally requires that the deformation tube has a large diameter and / or a large wall thickness on one side. This results in a high mass of the crash bumper. [0004] A crash absorber for motor vehicles is known from DE 197 45 656 A1. The crash absorber comprises two concentrically arranged deformation tubes, which can generate at least two absorption characteristic curves by actuating the blocking element. [0005] in accordance with DE 197 45 656 A1 figure 2 a to figure 2 In embodiment c, ...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Patents(China)
IPC IPC(8): F16F7/12
CPCF16F7/125
Inventor H·克内恩伯格H·维延德W·威恩斯
Owner ZF FRIEDRICHSHAFEN AG