A collision energy absorbing device of a railcar includes: an outside plate constituting an outer tube including an axis extending in a car longitudinal direction; and at least one partition plate extending in the car longitudinal direction in an internal space surrounded by the outside plate, the at least one partition plate fixed to the outside plate and dividing the internal space. An outer shape of the outer tube is a shape that is symmetrical with respect to a virtual horizontal surface including the axis, and the at least one partition plate includes a missing portion in the internal space.

The present invention relates to an shock absorber based on the cutting, inward-folding and crushing of composite tube, comprising a destructing cap, a flat-pressing cap, a cutter and a positioning tube. The cutter is positioned in the destructing cap, and has a lower end connected to an inner flange of the destructing cap and an upper end connected to the positioning tube. The positioning tube is positioned in the destructing cap and closely connected to the inner wall of the destructing cap, and has a lower surface in contact with the cutter. The destructing cap, the positioning tube and the composite tube are respectively provided with aligned pin holes, and bound together with a pin. Energy is absorbed through destruction generated due to cutting and inward-folding of the composition tube. Energy can also be absorbed through destruction generated due to the inward-folding of the composite tube, without using the cutter. Compared to existing technology, the device may be used as a structural component in a normal working state. In the colliding and crushing state, the device fully destructs the composite. The present invention has the following advantages: the energy-absorption ratio is high; and the energy absorbing device only bears an axial force in the process that the composite is being destroyed, does not bend or rupture, keeps the structure stable, and avoids spattering of scraps.

The present invention relates to an shock absorber based on the cutting, inward-folding and crushing of composite tube, comprising a destructing cap, a flat-pressing cap, a cutter and a positioning tube. The cutter is positioned in the destructing cap, and has a lower end connected to an inner flange of the destructing cap and an upper end connected to the positioning tube. The positioning tube is positioned in the destructing cap and closely connected to the inner wall of the destructing cap, and has a lower surface in contact with the cutter. The destructing cap, the positioning tube and the composite tube are respectively provided with aligned pin holes, and bound together with a pin. Energy is absorbed through destruction generated due to cutting and inward-folding of the composition tube. Energy can also be absorbed through destruction generated due to the inward-folding of the composite tube, without using the cutter. Compared to existing technology, the device may be used as a structural component in a normal working state. In the colliding and crushing state, the device fully destructs the composite. The present invention has the following advantages: the energy-absorption ratio is high; and the energy absorbing device only bears an axial force in the process that the composite is being destroyed, does not bend or rupture, keeps the structure stable, and avoids spattering of scraps.

A reusable collision energy absorption device for a rail vehicle includes an impacted rod, a damping structure including a damping plug, a guide tube and a damping elastic element, a return structure including a return piston and an elastic return element, an outer tube having a tubular structure, and an interior partitioned into a front cavity and a rear cavity through a partition plate provided with a damping hole in the form of a through hole. A portion of the damping plug is in the damping hole when the damping plug is in an initial position, and the damping plug can move in a front-rear direction when the device is impacted. A gap between a radial thickest portion of the damping plug and the damping hole allows the fluid to circulate between the front cavity and the rear cavity.

A reusable collision energy absorption device for a rail vehicle includes an impacted rod, a damping structure including a damping plug, a guide tube and a damping elastic element, a return structure including a return piston and an elastic return element, an outer tube having a tubular structure, and an interior partitioned into a front cavity and a rear cavity through a partition plate provided with a damping hole in the form of a through hole. A portion of the damping plug is in the damping hole when the damping plug is in an initial position, and the damping plug can move in a front-rear direction when the device is impacted. A gap between a radial thickest portion of the damping plug and the damping hole allows the fluid to circulate between the front cavity and the rear cavity.

An apron for a vehicle is formed of a plurality of partial aprons. In order to prevent damage to the apron requiring a complete replacement of the apron, the novel apron has a plurality of partial aprons, wherein at least one of the partial aprons has a predetermined breaking point that is configured to break earlier than the other partial apron in case of mechanical stress.

An apron for a vehicle is formed of a plurality of partial aprons. In order to prevent damage to the apron requiring a complete replacement of the apron, the novel apron has a plurality of partial aprons, wherein at least one of the partial aprons has a predetermined breaking point that is configured to break earlier than the other partial apron in case of mechanical stress.

The present invention discloses a honeycomb type cowcatcher and energy absorber for rail transit vehicles, comprising a high rigidity supporting back frame for cowcatcher and energy absorber, arranged detachably on a frame body of rail transit vehicle; at least one honeycomb type cowcatcher and energy absorber unit fixedly screwed on supporting back frame, applied to absorbing an impact energy generated by collision through plastic deformation; the honeycomb type unit comprises honeycomb structured accommodation cavity, where a honeycomb structure arranged. Through a method of mounting a honeycomb type unit onto the high rigidity supporting back frame, the present invention makes part of energy have been absorbed by the unit before a rigid collision between obstacle and train body happens, thus weakens a relatively large impact afforded by train body, therefore, decreases a damage from obstacle to train body.

The present invention discloses a honeycomb type cowcatcher and energy absorber for rail transit vehicles, comprising a high rigidity supporting back frame for cowcatcher and energy absorber, arranged detachably on a frame body of rail transit vehicle; at least one honeycomb type cowcatcher and energy absorber unit fixedly screwed on supporting back frame, applied to absorbing an impact energy generated by collision through plastic deformation; the honeycomb type unit comprises honeycomb structured accommodation cavity, where a honeycomb structure arranged. Through a method of mounting a honeycomb type unit onto the high rigidity supporting back frame, the present invention makes part of energy have been absorbed by the unit before a rigid collision between obstacle and train body happens, thus weakens a relatively large impact afforded by train body, therefore, decreases a damage from obstacle to train body.

A telescopic type collision energy absorption device includes a first tube, a second tube telescoped within the first tube, and a telescopic mechanism connected with the second tube by passing through the first tube, the first tube being mounted with a cutting mechanism for cutting an outer wall of the second tube, when the device is in a non-operating state, the telescopic mechanism pulls the second tube to retract into the first tube; in a state prior to the collision of a vehicle, the telescopic mechanism under an effect of high-pressure air pushes the second tube to eject outwards, the cutting mechanism is pressed against locating slots of the second tube under an effect of a spring force, the cutting mechanism cuts the second tube and absorbs energy when the second tube is subjected to an external force and retracts towards interior of the first tube.