36results about How to "Improve the effect of cushioning and energy absorption" patented technology

The invention discloses a heavy automobile biomimetic rear bumper which is used for solving the problems that the energy-absorbing performance of common materials of existing heavy automobile bumpers is poor and consequently the phenomenon that a small vehicle dashes into the space under a former vehicle is liable to occur. The heavy automobile biomimetic rear bumper comprises a bumper body which is composed of an upper oblique face, a lower oblique face and two semicircular-arc faces with different radii, and the two semicircular-arc faces connect the upper oblique face and the lower oblique face. Two lower supports are fixedly installed on the upper oblique face of the bumper body and are sequentially hinged to the lower ends of two buffer rods, and the upper ends of the two buffer rods are sequentially hinged to two upper supports. The two upper supports are both fixed to the upper portion of a rear frame of a heavy automobile. Two buffer blocks are both in a circular truncated cone shape. The semicircular-arc face with the smaller radius of the bumper body is fixedly connected with the upper bottom faces of the two buffer blocks in sequence through two connecting blocks. The lower bottom faces of the two buffer blocks are both fixed to the lower portion of the rear frame of the heavy automobile. The heavy automobile biomimetic rear bumper is simple in structure, low in cost, good in energy-absorbing effect and easy to apply and popularize.

The invention discloses a buffer energy-absorption anti-collision mechanism with both collision compatibility and passing ability. The buffer energy-absorption anti-collision mechanism comprises a #-shaped buffer energy-absorption frame and an auxiliary buffer energy-absorption air cylinder. The #-shaped buffer energy-absorption frame can perform buffer energy absorption through elastic deformation. The auxiliary buffer energy-absorption air cylinder can perform buffer energy absorption by compressing gases. The elastic deformation part of the #-shaped buffer energy-absorption frame is abutted against the auxiliary buffer energy-absorption air cylinder. A rake-shaped connecting rod mechanism which can be retracted and spread at the tail of a car is disposed on the #-shaped buffer energy-absorption frame, A fork-shaped connecting rod mechanism which can be retracted and spread at the tail of the car is disposed on the auxiliary buffer energy-absorption air cylinder. The buffer energy-absorption anti-collision mechanism has the advantages that buffer energy absorption is achieved by the elastic deformation of the #-shaped buffer energy-absorption frame, buffer energy absorption is further achieved by the gas compression of the auxiliary buffer energy-absorption air cylinder, buffer energy absorption effect is increased greatly, and lightweight design is achieved; the auxiliary buffer energy-absorption air cylinder can be abutted against the #-shaped buffer energy-absorption frame, and the collision resistance and stability of the #-shaped buffer energy-absorption frame are increased; the #-shaped buffer energy-absorption frame and the auxiliary buffer energy-absorption air cylinder are retracted at the tail of the car respectively through the rake-shaped connecting rod mechanism and the fork-shaped connecting rod mechanism, and the passing ability and cross-country ability of the car are increased.

The invention discloses a hydraulic energy absorption anti-creeper for a train. The hydraulic energy absorption anti-creeper for the train comprises a piston rod, a piston, an inner sleeve and an outer sleeve. One end of the piston rod is connected with the piston, the inner sleeve is arranged in the outer sleeve in a sealed manner, and damping liquid is arranged in the inner sleeve. The piston can be arranged to be connected with the inner sleeve in a sliding manner, a damping hole is formed in the inner sleeve, and the damping hole is provided with a damping hole blocking device in a sealedmanner. When a collision accident happens to the train, the piston backwards extrudes the damping liquid, when the pressure reaches the threshold value of the damping hole blocking device, the dampinghole blocking device disengages, the damping liquid is extruded to the outer sleeve of a hydraulic cylinder body, kinetic energy of the train is converted into pressure energy and kinetic energy of the damping liquid, and therefore a protection effect can be achieved on a train body and drivers and conductors, and the problem that the impact force level and stability can be hardly taken into consideration at the same time is solved effectively. SPH-FEM coupling simulation shows that the hydraulic energy absorption anti-creeper has the multiple beneficial effects that the impact force stability is high, the maximum energy absorption amount and the impact force level can be adjusted, the unbalance loading resistance is good, and different train collision speed grade work conditions can be met.

The invention discloses a heavy automobile biomimetic rear bumper which is used for solving the problems that the energy-absorbing performance of common materials of existing heavy automobile bumpers is poor and consequently the phenomenon that a small vehicle dashes into the space under a former vehicle is liable to occur. The heavy automobile biomimetic rear bumper comprises a bumper body which is composed of an upper oblique face, a lower oblique face and two semicircular-arc faces with different radii, and the two semicircular-arc faces connect the upper oblique face and the lower oblique face. Two lower supports are fixedly installed on the upper oblique face of the bumper body and are sequentially hinged to the lower ends of two buffer rods, and the upper ends of the two buffer rods are sequentially hinged to two upper supports. The two upper supports are both fixed to the upper portion of a rear frame of a heavy automobile. Two buffer blocks are both in a circular truncated cone shape. The semicircular-arc face with the smaller radius of the bumper body is fixedly connected with the upper bottom faces of the two buffer blocks in sequence through two connecting blocks. The lower bottom faces of the two buffer blocks are both fixed to the lower portion of the rear frame of the heavy automobile. The heavy automobile biomimetic rear bumper is simple in structure, low in cost, good in energy-absorbing effect and easy to apply and popularize.

The invention discloses a novel valve hall plugging structure and an anti-explosion checking method, and relates to the field of direct-current power transmission. The structure is used for enhancingthe fireproof and anti-explosion capacity of a firewall between a converter transformer and a valve hall; the structure comprises a first plug and a second plug, a converter transformer sleeve on theconverter transformer side penetrates through the first plug and extends to the valve hall side, and the second plug is arranged on the contact surface of the converter transformer sleeve and the first plug; the first plug comprises a buffer energy absorption layer, an explosion-proof steel plate layer and a fireproof layer which are sequentially connected from the converter transformer side to the valve hall side; and the second plug comprises a ceramic silicone rubber waterproof sealing sleeve used for being arranged on the converter transformer sleeve in a sleeving mode and an aluminum silicate fiber needled blanket arranged between the contact faces of the converter transformer sleeve and the first plug in a filling mode. The method is used for anti-explosion checking of the structure,the deformation amount of the blocking structure is small under the impact of explosive force, and the interior of the blocking structure can still be protected under the condition of explosive impact loads.

The invention discloses a crushing deformation type rear-end crash seat energy-absorbing structure. An energy-absorbing connecting structure consisting of an energy-absorbing plate, an upper end boltconnecting structure and a lower end bolt connecting structure is taken as a second connecting structure so as to connect the rear end part of an angle adjuster connecting plate and the rear part of acushion side plate, so that, when a rear-end crash occurs for a vehicle using the structure, the impact force of a passenger on a seat backrest can be transferred to the cushion side plate through the upper end bolt connecting structure, the energy-absorbing plate and the lower end bolt connecting structure in sequence by the angle adjuster connecting plate. A concave-convex structure is arrangedon the energy-absorbing plate that a two-force rod structure is formed by the connecting structure, buffering energy absorption of impact force on the automobile seat backrest in the rear-end crash process of a passenger can be realized, and the structure has the advantages that the cushioning energy-absorbing process is extremely stable, the design and optimization difficulty is low, the cushioning energy-absorbing effect is extremely high, the structure is simple and the cost is low.

The invention provides an efficient buffer energy absorption device for automobiles. The efficient buffer energy absorption device comprises a first connecting plate, a second connecting plate and a shell body, wherein the first connecting plate and the second connecting plate are arranged at the two ends of the shell body respectively, a porous aluminum alloy section and a hard rubber section arefilled in the shell body, a group of large hole transverse grooves and a group of small hole transverse grooves are formed in the porous aluminum alloy section, and the large hole transverse groovesand the small hole transverse grooves are sequentially arranged at intervals. The distances between every two adjacent large hole transverse grooves are equal, the distances between every two adjacentsmall hole transverse grooves are equal, and it is ensured that when the efficient buffer energy absorption device is stressed, all the parts are stressed uniformly.

The invention relates to a construction method for improving the seismic capacity of a tunnel, which comprises the following construction steps: (1) determining the surrounding rock area to be strengthened within the tunnel construction range; (2) grouting reinforcement to the surrounding rock area to be strengthened, and The rock surface is repaired with anti-seismic damping materials; (3) construction of the initial support structure; (4) construction of the inverted arch structure of the tunnel; (5) multiple anti-seismic devices are installed on the completed initial support structure; (6 ) to carry out the construction of the secondary support structure, there is a gap between the secondary support structure and the primary support structure along the radial direction of the tunnel, and the secondary support structure is composed of steel truss supports and composite structural plates; (7) in the above The anti-seismic material is injected into the gap to fill the entire gap. The construction method of the invention adopts a combination of various anti-seismic measures to achieve a good anti-seismic effect, fundamentally solves the problem of tunnel support, and improves the anti-seismic capacity of the tunnel.

The invention discloses a battery tray, a battery pack and an electric vehicle. The battery tray includes an annular frame and a plurality of lifting lugs. The frame has an accommodating cavity extending along the circumferential direction of the frame. The multiple lifting lugs extend along the circumferential direction of the frame. The directions are arranged at intervals, and each lifting lug is arranged on the peripheral wall of the frame, and a placement cavity is formed in each lifting lug, wherein a first foamed aluminum foam is respectively arranged in the placement cavity and the position corresponding to the lifting lug of the accommodation cavity. pieces. The overall weight of the battery tray according to the present invention is relatively small, and has better buffering and energy-absorbing effect.

The invention discloses a buffer energy-absorption anti-collision mechanism with both collision compatibility and passing ability. The buffer energy-absorption anti-collision mechanism comprises a #-shaped buffer energy-absorption frame and an auxiliary buffer energy-absorption air cylinder. The #-shaped buffer energy-absorption frame can perform buffer energy absorption through elastic deformation. The auxiliary buffer energy-absorption air cylinder can perform buffer energy absorption by compressing gases. The elastic deformation part of the #-shaped buffer energy-absorption frame is abutted against the auxiliary buffer energy-absorption air cylinder. A rake-shaped connecting rod mechanism which can be retracted and spread at the tail of a car is disposed on the #-shaped buffer energy-absorption frame, A fork-shaped connecting rod mechanism which can be retracted and spread at the tail of the car is disposed on the auxiliary buffer energy-absorption air cylinder. The buffer energy-absorption anti-collision mechanism has the advantages that buffer energy absorption is achieved by the elastic deformation of the #-shaped buffer energy-absorption frame, buffer energy absorption is further achieved by the gas compression of the auxiliary buffer energy-absorption air cylinder, buffer energy absorption effect is increased greatly, and lightweight design is achieved; the auxiliary buffer energy-absorption air cylinder can be abutted against the #-shaped buffer energy-absorption frame, and the collision resistance and stability of the #-shaped buffer energy-absorption frame are increased; the #-shaped buffer energy-absorption frame and the auxiliary buffer energy-absorption air cylinder are retracted at the tail of the car respectively through the rake-shaped connecting rod mechanism and the fork-shaped connecting rod mechanism, and the passing ability and cross-country ability of the car are increased.

The invention discloses a control method for a hydraulic oil cylinder collision buffering system of a bulldozer. According to judgment of conditions of a travelling speed and acceleration, a corresponding overflow valve turning on condition is set by reference to oil pressure variation data under a normal working condition and a collision condition; during normal working, an overflow valve is turned off when no tremendous change happens to oil cylinder pressure and the acceleration, so that thrust force required by working is guaranteed; in case of collision, collision is judged according to variations of the oil cylinder pressure and the acceleration, and a controller can set turning on pressure of the overflow valve according to the oil cylinder pressure and the travelling speed, so that the overflow valve is controlled to be turned on when certain pressure is reached so as to function in buffering. The defect that a traditional overflow valve is fixed in the turning on pressure and cannot allow overflow and pressure release before the oil cylinder pressure reaches the overflow turning on pressure is overcome, and the control method for the hydraulic oil cylinder collision buffering system enables buffering in the first time when collision happens and is capable of reducing collision stress and prolonging fatigue life of a structural component.

The invention provides a bumper based on a lattice unit cell honeycomb structure and an automobile. The bumper based on the lattice unit cell honeycomb structure comprises a front board, the lattice unit cell honeycomb structure and a cross bar. Two end surfaces of the lattice unit cell honeycomb structure are connected with the front board and the cross bar respectively, and comprises at least one honeycomb unit. Each honeycomb unit comprises a honeycomb substructure and two layers of connection boards, and the honeycomb substructure is arranged between the two layers of connection boards. The honeycomb substructure is arranged between the adjacent honeycomb units, and comprises at least two tabulate battens; at least one pair of round tubes is arranged on the battens, the central axes of the round tubes are located on the planes of the battens, and two ends of the round tubes are located at two ends of the battens in the width direction respectively. The battens are clamped with each other to form honeycomb pores. The energy absorption capability of the bumper based on the lattice unit cell honeycomb structure can be improved, so that the safety of the automobile and passengers in the automobile can be guaranteed.

The invention discloses a fast-assembling expressway buffer guardrail, which comprises: a plurality of bases, which are evenly spaced and arranged on both sides of the expressway; a baffle; a plurality of uprights, which are set in one-to-one correspondence with a plurality of bases; a plurality of elastic buffer tubes, which are hollow cylinders with openings at both ends, and a plurality of elastic buffer tubes are sleeved on the plurality of uprights in one-to-one correspondence; and The guardrail board is horizontally hung on the outer wall of multiple elastic buffer tubes on the side facing the road surface of the expressway. The present invention realizes the rapid assembly of highway buffer guardrails through rationally arranged multiple bases, multiple pillars, multiple elastic buffer tubes and guardrail panels, and the structure of multiple elastic buffer tubes and guardrail panels has a good buffering and energy-absorbing effect .

The invention relates to a honeycomb structure. The honeycomb structure is formed by honeycomb unit cell arrays in a periodic folding manner. The structural strength of the honeycomb structure in the coplanar direction can be improved through the periodic folding. when the honeycomb structure is used as a buffer energy suction structure, the energy suction capacity of the honeycomb structure can be improved, and meanwhile, the honeycomb structure has the approximate isotropy characteristic; two-time folding is conducted on honeycomb unit cells in each folding period, the primary folding direction is arbitrary, the secondary folding direction is opposite to the primary folding direction, the included angle of the surfaces of the folded honeycomb unit cells and the surfaces of unfolded honeycomb unit cells is in the range of 10-34 degrees, series connection is conducted on the periodic folding honeycomb unit cells in the directions of different planes, arraying is conducted in the coplanar direction after connection, and the structural strength of the honeycomb structure in the coplanar direction can be improved effectively.

The invention relates to the technical field of building energy saving and renewable energy utilization, in particular to an aluminum alloy profile for photovoltaic modules, and aims to solve the problems of cumbersome installation steps, irregularities, and easy damage to photovoltaic panels in the assembly process of photovoltaic panels and aluminum alloy profiles , including several frame units for clamping the photovoltaic panels, the frame units include four aluminum alloy profiles forming a rectangular frame, the aluminum alloy profiles have accommodating cavities for accommodating the edges of the photovoltaic panels, and the accommodating cavities Above and below are horizontal and parallel top plate and bottom plate respectively, the top plate and bottom plate are provided with warping edges towards the opening direction of the accommodation cavity, and the warping edges gradually widen the opening width of the accommodation cavity from inside to outside; The top plate and the bottom plate are provided with a sealing cavity, and the sealing cavity is connected with the overflowing glue part located in the receiving cavity, and the inside of the sealing cavity is filled with glue. The assembly of the photovoltaic panel and the aluminum alloy profile is convenient and quick, and the sealing performance is good, so it is worth popularizing.