44results about How to "Stable energy absorption" patented technology

The invention provides an energy absorbing type rear protection device capable of automatically adjusting height. The energy absorbing type rear protection device capable of automatically adjusting the height comprises two ground clearance detection mechanisms, two 4-shaped brackets, a transmission mechanism, B-shaped cross beams and energy absorbing units; the two 4-shaped brackets are symmetrically mounted on the external side surfaces of two longitudinal beams at the tail part of a commercial vehicle; the two 4-shaped brackets are connected with each other through the transmission mechanism; the B-shaped cross beams are connected to the end surfaces, facing the vehicle tail, of the 4-shaped brackets through the energy absorbing units; the two ground clearance detection mechanisms are correspondingly connected to the internal sides of the two longitudinal beams at the tail part of the commercial vehicle through connecting pins; each ground clearance detection mechanism comprises a connecting head, a connecting rod and a plate with a universal wheel; the connecting heads are mounted on the internal sides of the longitudinal beams at the tail part of the commercial vehicle throughconnecting pins; and the connecting heads can rotate around the connecting pins. According to the energy absorbing type rear protection device capable of automatically adjusting the height, the obstacle crossing ability is realized, collision energy can be stably absorbed stage by stage, the rigidity in the height direction is distributed in a graded manner, and an automobile suffering rear-end collision can be effectively prevented from getting to the bottom of a truck.

The invention discloses a preparation method for an alumina-based foam material. The method comprises the following steps: firstly, plating a layer of metal on the surface of carbon fiber, and adding the carbon fiber with the metal coating into aluminum or aluminum alloy fusant; then adding titanium hydride, and stirring evenly; and taking the carbon fiber out after foaming, and cooling to obtainthe alumina-based foam material with enhanced fiber. In the invention, the carbon fiber is introduced into the preparation of the foamed aluminum material, thereby realizing that the stability of bubbles and material performance are improved; and compared with the prior art, the compressive strength of the foamed aluminum material prepared by the invention is higher than 6Mpa, the impact toughness is improved by about 30%, and the energy absorption capability is improved by more than 50%, thus the compression strength, the energy absorbing and damping performances of the alumina-based foam material with short enhanced carbon fiber are remarkably improved, and the pore wall toughness of the material is better.

The invention provides a kind of automobile collision energy-absorbing box, comprising: an upper flange, a composite shell, an inner filler, a circular platform inner tube and a lower flange; the upper part of the composite shell is a square box, and each square box Five defect holes are arranged on the side along the diagonal; the lower part of the composite shell is a platform bellows, and its side edge is a sinusoidal corrugated structure; the circular platform inner tube is arranged in the composite shell, and the internal filler It is filled between the inner tube of the round table and the inner wall of the composite shell; the filling between the square box and the inner tube of the round table is a honeycomb structure, and the filling between the bellows of the table body and the inner tube of the round table is a lattice structure. The above-mentioned energy-absorbing box for automobiles has high energy-absorbing stability and good energy-absorbing effect.

The invention provides a crash energy absorbing and anti-falling structure of a steering column. The structure comprises a mounting bracket which is fixed on a vehicle body and covers an upper columnpipe, and a clamping block which is fixed on the upper column pipe and is opposite to the position of the mounting bracket, symmetrical sliding grooves are formed in the two sides of the clamping block in the axial direction of the upper column pipe, a handle shaft transversely penetrating through the sliding grooves is arranged on the mounting bracket, extending grooves are formed in the front ends of the sliding grooves, and breakable steel belts are arranged in the extending grooves respectively. The end, facing the sliding groove, of each steel belt is a wedge-shaped end; and a wedge-shaped block matched with the wedge-shaped end is convexly arranged on the handle shaft. The crash peak force and the continuous force of the steering column can be well controlled through the breakable steel belts, stable energy absorption is achieved, and harm to a driver during collision is reduced; and the handle shaft of the mounting bracket fixed on the vehicle body transversely penetrates through the sliding groove of the clamping block, and the steel belts can be collapsed and deformed along the extending grooves after collision, so that the steering column can be effectively prevented fromfalling, and the steering column is ensured to still have steering capacity after collapsing.

The invention discloses a coupler buffering and energy-absorbing device of a rail transit vehicle. The energy-absorbing device comprises a traction rod and a pull rod; the pull rod is connected with the traction rod through a guide rod, and an expansion block is arranged at the end, facing the coupler tailstock, of the traction rod. A crushing pipe is arranged outside the guide rod in a sleeving mode, one end of the crushing pipe abuts against one end face of the pull rod, and the other end of the crushing pipe forms a slope ring abutting against the expansion block; the end, close to the pullrod, of the guide rod is provided with a supporting table, and the outer circumferential face of the supporting table is attached to the inner wall face of the crushing pipe. The crushing pipe comprises two or more layers of thin-walled pipes which are arranged in a sleeved mode. According to the energy-absorbing device, the collision energy absorption capacity of the crushing pipe is improved, and the energy absorption behavior is optimized.

The present invention disclosed the front -end structure of the rail vehicle.The front -end structure of the vehicle includes the body body, the front -end structure of the chain, the driver's room skeleton and the anti -climber;The front end of the driver's room floor has a collision wall, which is fixed at the front end of the collision wall;In order to hook the system's energy -absorbing area, anti -climber energy absorbing area, vehicle body first -level deformation absorption area, car body secondary deformation energy absorption zone, and car body body; when the vehicle collides, the hook slow system absorption energy absorption energy absorption energy absorption energy absorption energy absorption energyArea, anti -climber -absorbing zone, first -level deformation absorption zone, and second -level deformation absorption zone of the car body occur in turn.The present invention can ensure the driver's living space at the time of the accident.

The invention discloses a detachable anti-climbing energy-absorbing device, specifically relates to the technical field of vehicles, comprising an extruded tube, the outer wall of the bottom end of the extruded tube is provided with a mounting seat, and the left and right sides of the mounting seat are both The limit mechanism is fixedly connected, the upper surface of the mounting base is fixedly connected with a support tube, and the bottom end of the extruded tube is sleeved in the support tube. The invention facilitates the installation of the expansion tube through the function of the wire sleeve and the mounting seat, and at the same time utilizes the function of the disassembly port to facilitate the disassembly of the expansion tube through tooling tools, and secondly, the shielding panel can be embedded in the In the disassembly port, cover it to prevent it from being blocked and affect the use, and through the function of the built-in block and the adsorption block, it can facilitate the rise and limit of the block panel. Compared with the traditional anti-climbing energy-absorbing device, this anti-climbing The climbing energy-absorbing device has a simple structure, which is convenient to operate and quickly replace the expansion tube, thereby facilitating repeated use and reducing maintenance costs.

The invention provides a cylindrically laminated stainless steel fiber porous material and an energy absorption compound pipe. The porous material is prepared from the method which comprises the following steps: crocheting a stainless steel base material to obtain a single-layered metal porous sheet, wherein the stainless steel base material is selected from a single-bundle continuous stainless steel fiber bundle, a single-bundle continuous soft stainless steel wire with the diameter of 0.2 to 1.0 mm or a single-bundle continuous ultrathin soft stainless steel rope with the diameter of 0.2 to0.8 mm; and winding and wrapping the single-layered metal porous sheet to be cylindrically laminated, carrying out vacuum sintering for 2 to 3.5 h at the temperature of 1100 to 1330 DEG C, and carrying out furnace cooling to obtain the cylindrically laminated stainless steel fiber porous material with the porosity of 60% to 90%. The stainless steel base material is crocheted and is wound and wrapped to be cylindrically laminated, and then vacuum sintering is carried out, so that the cylindrically laminated stainless steel fiber porous material with the porosity of 60% to 90% is obtained. The material is low in preparation method, and when a metal thin wall tube is filled with the metal, under the condition that the squashing peak value is hardly increased, the material has more stable energy absorption process and higher energy absorption capacity.

The invention relates to a high-integration automobile roof with a low-peak-value energy absorption structure. The high-integration automobile roof comprises a roof outer board, a low-peak-value energy absorption structural layer and a trim panel. The low-peak-value energy absorption structural layer is of a stereoscopic structure composed of multiple unit cell bodies sequentially arranged and combined in the X direction. Each unit cell body is composed of inward-recessed quadrangular energy absorption parts evenly arranged at intervals from top to bottom and connecting boards used for connecting every two adjacent inward-recessed quadrangular energy absorption parts. Each inward-recessed quadrangular energy absorption part comprises two first transverse energy absorption parts symmetrically arranged in the horizontal direction, two second transverse energy absorption parts arranged symmetrically relative to the first transverse energy absorption parts in the vertical direction, two first vertical energy absorption parts symmetrically arranged in the horizontal direction, and two second vertical energy absorption parts arranged symmetrically relative to the first vertical energy absorption parts in the vertical direction. The roof is low in collision initial peak value, stable in energy absorption process, good in energy absorption effect and capable of guaranteeing safety andcomfort at the same time.

A new type of automobile engine hood with a special microcellular filling layer, including an outer panel of the engine hood, a negative Poisson's ratio cellular filling layer, and an inner panel of the engine hood; the negative Poisson's ratio cellular filling layer is composed of a plurality of microcellular Cells are arranged and combined; the micro cells are composed of four energy-absorbing parts, and the top and bottom of the four energy-absorbing parts are connected by a square connecting block to form a whole; the energy-absorbing parts It includes an upper horizontal connection part, a first energy-absorbing part, a second energy-absorbing part, a force transmission part, a third energy-absorbing part, and a lower horizontal connecting part; wherein, the upper horizontal connecting part is connected with the first energy-absorbing part, and the first energy-absorbing part The energy part is connected to the second energy absorbing part, and the angle α between the first energy absorbing part and the second energy absorbing part is an obtuse angle; the second energy absorbing part is connected to the force transmitting part; the force transmitting part is connected to the third energy absorbing part connected, the third energy absorbing portion is connected to the lower horizontal connecting portion, and the angle β between the third energy absorbing portion and the lower horizontal connecting portion is an obtuse angle. The engine cover is simple in structure and has good energy absorption effect during collision.