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

The invention discloses a composite energy absorption tube machining device which comprises a rectifier (1), a resistor (2), a switch (3), a capacitor (4), a boosting transformer (5), an upper fixing plate (6), a fixing bolt (7), a pressing block (8), a mould frame (9), a constraint mould (11), a coil (12), a lower fixing plate (13), a T-shaped platform (14), an exhaust vent (16), a fixing groove (17) and a wire hole (18). Compared with a hydraulic forming method and a mechanical bulging method, a composite metal energy absorption forming method based on the electromagnetic forming principle and used in the composite energy absorption tube machining device is high in machining efficiency and high in the pipe fitting forming speed and enables composite metal tubes to be formed under the high strain rate; due to the fact that the high strain deformation process can be used for forming metal materials which are deformed difficultly through a conventional method, the plasticity of the metal materials is greatly improved, and the yield strength of the materials is greatly improved. Different wave forms and reinforcing ribs can be formed by changing the shape of the constraint mould in a mould body, and the machining flexibility is high.

The invention discloses a multiphase synchronous rectification BUCK topology circuit which comprises a main control unit and an output filtering capacitor, and each phase circuit comprises a capacitor energy storage unit, a charging power unit, a synchronous rectification unit, a drive circuit, a fly-wheel diode and an inductive energy storage unit; the main control unit is respectively connected with the drive circuit of each phase circuit, and the drive circuit of each phase circuit is connected with the synchronous rectification unit, and the charging power unit; and the input end of each phase is connected in parallel, the output end of each phase is connected in parallel and connected to the output filtering capacitor. The technical scheme of the invention is adopted, each phase BUCK circuit is independently controlled, and flow equalization adjustment is automatically performed, thus option is simpler; the topology circuit has higher conversion efficiency under the occasion of low current; and meanwhile, when one phase is in failure, other phases are not influenced, and the working state is more stable and reliable.

There is provided a vehicle equipped with a shock absorbing structure that can absorb collision energy stably under all collision conditions to ensure the safety of crew members and passengers. The shock absorbing structure is arranged in an end part of the vehicle. The shock absorbing structure comprises an upper-stage shock absorbing structure 100 that is arranged in an upper part of a crushable zone to absorb collision energy by being crushed by a predetermined load, a lower-stage shock absorbing structure 120 that is arranged in a lower part of the crushable zone to absorb the collision energy by being crushed by the predetermined load, and a middle-stage shock absorbing structure 110 that is held between the upper-stage shock absorbing structure 100 and the lower-stage shock absorbing structure 120 arranged over and under the middle-stage shock absorbing structure 110. The middle-stage shock absorbing structure 110 includes a buffer structure 112 and a slide structure 113, and the buffer structure 112 is slid to the rear by the predetermined load.

The invention discloses an automobile B-column capable of realizing multi-axis concentrated energy absorption. The automobile B-column comprises a B-column outer plate, a micro-cell filling layer, anda B-column inner plate. The micro-cell filling layer is a stereoscopic structure formed by successively arranging and combining multiple cell bodies in an X direction and a Y direction. The cell bodyis formed by connecting two symmetrical sub-cells. The sub-cell comprises a force transmitting part, a first vertical energy absorption part, a second vertical energy absorption part, a first horizontal energy absorption part, and a second horizontal energy absorption part. One end of the force transmitting part is connected with the first vertical energy absorption part through a first horizontal force transmitting plate, and the other end is connected with the first horizontal energy absorption part. The first vertical energy absorption part is connected with the second vertical energy absorption part. An included angle between the first vertical energy absorption part and the second vertical energy absorption part is 135-165 degrees. The first horizontal energy absorption part is connected with the second horizontal energy absorption part through a second horizontal force transmitting plate. The other end of the second horizontal energy absorption part is connected with the secondvertical energy absorption part. The automobile B-column is low in initial peak value during a collision process, stable in energy absorption process, and good in energy absorption effect.

The invention relates to an automobile anti-collision beam. An energy storage buffer box is of a structure that a piston is matched with an elastic piece; the elastic piece can effectively store impact energy, so that damage to passengers in an automobile is reduced, and the safety of pedestrians outside the automobile is protected. Under a low-speed condition, the elastic piece serves as an energy storage element to store certain collision energy, so that the safety of the passengers can be effectively protected. Compared with a traditional automobile anti-collision beam of which the energy absorption box is directly stressed to deform in a collision process, and the automobile anti-collision beam enables an energy absorption process to be smoother. Meanwhile, when automobiles collide with each other at a high speed, the hollow structure of the piston enables the elastic piece to be impacted by loads, subsequent metal plastic deformation can be generated to absorb impact energy aftera compression amount reaches a maximum value, and therefore, the safety of a passenger compartment is improved. Layered self-similar energy absorption boxes increase the energy absorption effect of the anti-collision beam.

The invention discloses a double-gradient-strength passenger car stand column structure. The double-gradient-strength passenger car stand column structure is characterized by consisting of a longitudinal gradient strength stand column and a transverse filling gradient density foam material. As the transverse filling density foam material is bonded on the inner side wall of a gradient strength L-shaped plate in the length direction of the gradient strength L-shaped plate, the collision force of the key part-stand column of a passenger car closed loop structure can be guaranteed to be matched with the strength of the corresponding position in the passenger car tilting process, the stress of each surrounding part of a passenger car is more uniform, and the unloading of external impact load is facilitated. In addition, the transverse filling gradient density foam material enhances the rigidity of the stand column, and the energy absorption is more stable in the tilting of the passenger car, so that secondary collision casualties are reduced. Meanwhile, the foam material also achieves the effects of sound isolation and heat insulation, and improves the tilting safety and the comfort of the passenger car.

The invention relates to the technical field of new energy vehicles, in particular to a rear anti-collision beam energy absorption box and a design method thereof. A rear anti-collision beam energy absorption box is characterized in that the rear sides of the left end and the right end of a rear anti-collision beam are connected with a left energy absorption box assembly and a right energy absorption box assembly respectively, the lower portion of a left energy absorption box upper plate is connected with a left energy absorption box lower plate, and the rear sides of the left energy absorption box upper plate and the left energy absorption box lower plate are connected with a left energy absorption box sealing plate; a right energy absorption box lower plate is connected to the lower portion of the right energy absorption box upper plate, a right energy absorption box sealing plate is connected to the rear sides of the right energy absorption box upper plate and the right energy absorption box lower plate, a tow hook reinforcing plate is embedded between the right energy absorption box upper plate and the right energy absorption box lower plate, and the middle of the tow hook reinforcing plate is connected with a tow hook threaded sleeve through threads. Compared with the prior art, the rear anti-collision beam energy absorption box and the design method thereof have the advantages that compared with a traditional anti-collision beam energy absorption box, the rear anti-collision beam energy absorption box is better in safety performance, light in weight, more stable in energy absorption, simple in production and manufacturing process, low in cost and wide in applicability.

The invention discloses a cutting energy-absorbing mechanism for a passenger car. The cutting energy-absorbing mechanism for the passenger car comprises a spline shaft, a spline sleeve, a fixing sleeve and a baffle. The spline shaft is arranged in the spline sleeve in a fit and interfered mode. The spline sleeve is movably arranged in the fixing sleeve in a nested mode. The baffle is fixedly arranged on the rear end of the fixing sleeve. The rear end of the spline shaft is fixedly connected with a front wall arc rod of the passenger car. The fixing sleeve is fixedly connected with an upright post of a passenger car steering table. According to the cutting energy-absorbing mechanism for the passenger car, it is guaranteed that a steering column mounting table can absorb partial energy in the frontal impact process( that is, partial kinetic energy produced by the collision can be transformed into heat energy and deformation energy in the process of the spline shaft cutting the spline sleeve), the energy-absorbing is stable, the stiffness and strength of a steering table body can be enhanced, and at the same time, the problems of the vibration of a steering wheel and the like are solved.

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.