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

The invention provides a preparation method of a carbon nanotube reinforced foamed aluminum composite material for vibration attenuation and energy absorption, relates to the manufacturing of an alloy with open or closed pores, and specifically relates to the preparation method of the carbon nanotube reinforced foamed aluminum composite material for vibration attenuation and energy absorption with urea as a pore-forming agent and nickel as a carbon nanotube synthesis catalyst; the preparation method comprises the following steps: preparing the mixed powder of nickel nitrate, urea and aluminum powder; preparing a foamed aluminum blank; and preparing the carbon nanotube reinforced foamed aluminum composite material. The method is used for overcoming the defects of structural defect, low mechanical properties and low buffer energy-absorption property, large density and no lightweight property of the foamed aluminum materials prepared in the prior art, complex preparation process, relatively high cost and difficult realization of functional structure integration of the foamed aluminum serving as an energy-absorption material.

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 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.

A biomimetic skeleton type memory alloy collision buffer is disclosed. A carbon fiber composite material cover layer respectively covers the upper surface and the low surface of a NiTi shape memory alloy biomimetic skeleton, and is adhered and fixed together with the NiTi shape memory alloy biomimetic skeleton through an oxidized resin glue, to form the collision buffer; the NiTi shape memory alloy biomimetic skeleton is composed of an M-shaped NiTi alloy bracket and a grid-shaped NiTi alloy sheet, the M-shaped NiTi alloy bracket is welded on the grid-shaped NiTi alloy sheet, to form a single-layer skeleton structure, and the single-layer skeleton structures are welded layer by layer to form the NiTi shape memory alloy biomimetic skeleton. Four bolt holes are reserved in the carbon fiber composite cover layer on one side of the collision buffer, and the collision buffer is fixedly connected with other parts of the vehicle through bolts and nuts. According to the invention, the energy absorption performance of the collision buffer is improved, a large weight reduction is realized, automatic recovery after the collision load is unloaded can be realized, and the service life of the collision buffer is prolonged.

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 provides a recoverable rocket leg type buffering device with a time-share series triggering function, relates to a recoverable rocket leg type buffering device, and aims at solving the problems that an existing landing buffering device is normally composed of aluminum honeycomb single material, the energy absorbing efficiency is low, the load fluctuation is large, and existing landing buffering device cannot adapt to rocket soft landing in a severe environment. The buffering device is characterized in that a base is clamped at the bottom of the housing of a buffering device, an isolation circular pipe is inserted on the base in the housing of the buffering device, a metal honeycomb A fills the isolation circular pipe, a cylindrical piston can be slidably installed in the isolation circular pipe, one end of a piston push rod extends into the isolation circular pipe, and the upper end of the housing of the buffering device is covered with an end cap; a buffering metal pipesleeves the isolation circular pipe, the diameter of the buffering metal pipe is gradually increased in the direction from the base to the end cover direction, a metal honeycomb B is installed in a cavity between the outer wall of the isolation circular pipe and the inner wall of the buffering metal pipe, and locking assemblies are installed on the metal honeycomb B and the cylindrical piston respectively. The buffering device is applied to the technical field of aerospace.

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 novel valve hall plugging structure and a fire resistance checking method, and relates to the field of direct-current power transmission. The structure is used for enhancingthe fire resistance and explosion resistance 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 the converter 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 is sequentially connected with a buffer energy absorption layer, an explosion-proof steel plate layer and a fireproof layer 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 checking the fire resistance of the structure. Thestructure can not deform or fail under the severe high-temperature combustion condition, and therefore valve hall equipment is protected against damage under the adverse condition that a transformerexplodes and is on fire.

The invention relates to the field of automobiles and particularly relates to an automobile bumper using gradient foamed aluminum. The automobile bumper comprises a bumper shell, a buffer energy absorption layer and a bumper framework, wherein the buffer energy absorption layer comprises a composite foam material layer and a foamed aluminum filling pipe; the composite foam material layer comprises an outer side pure foam aluminum layer, a carbon nano tube reinforced foam aluminum matrix composite material layer and an inner side pure foam aluminum layer which are sequentially arranged in the direction close to a vehicle body; and the foamed aluminum filling pipe is composed of a foamed aluminum in-situ filling thin-wall aluminum alloy pipe with the density changing in a gradient mode. The buffer energy absorption layer is made of a component gradient composite foam material composed of a pure foam aluminum layer and a carbon nano tube reinforced foam aluminum matrix composite layer, good buffering and energy-absorbing capacity is provided through layer-by-layer crushing, and anti-collision performance of the bumper structure is effectively improved; meanwhile, the foamed aluminum filling pipe can provide higher energy absorption capacity and stability under oblique impact at a high impact speed, impact force borne by the automobile during collision is reduced, and safety of people and the automobile is protected to the maximum extent.

The invention relates to the cross technical field of porous metal and metal-based composite materials, in particular to functional gradient foamed aluminum and a preparation method thereof. The gradient foamed aluminum comprises at least one pure foamed aluminum layer and at least one carbon nanotube reinforced foamed aluminum-based composite material layer, wherein the porosity of the adjacent pure foamed aluminum layers is different; and the porosity of the adjacent carbon nanotube reinforced foamed aluminum-based composite material layers is different and / or the content of carbon nanotubes is different. According to the functional gradient foamed aluminum and the preparation method thereof provided by the invention, the density gradient and the component gradient are combined, the functional gradient foamed aluminum with the base material and the density changing at the same time is prepared, the gradient material can be designed in a targeted mode according to the service environment of the material, and the advantages of the gradient foamed material are fully played, so that the good energy absorption effect is achieved; and under the condition that the overall porosity is the same, the gradient foamed aluminum has higher stress level and higher energy absorption capacity compared with uniform foamed aluminum, so that the buffering and energy absorption performance of the gradient foamed aluminum is improved.

The invention belongs to the field of safety protection equipment in road engineering construction and particularly relates to a passive anti-collision and energy-absorption device for a highway ramp. The device comprises a column shell structure and a multilayer energy-absorption structure, wherein the column shell structure is formed by an outer-layer anti-collision ring and is filled with the multilayer energy-absorption structure; the multilayer energy-absorption structure comprises multiple gravel filling layers and flexible collision layers which are arranged at intervals; the outer-layer anti-collision ring and a lattice hollow structure are made of flexible materials; and a plurality of fixed grooves are further formed in the bottom of the device. The passive anti-collision and energy-absorption device can be used for dispersing and absorbing an external impact force in an impact process and is relatively high, so that the impact force caused to a vehicle can be effectively reduced in a collision process, the protecting capacity of the vehicle is improved, and the vehicle speed can be decreased in the impact process; and furthermore, the anti-collision and energy-absorption device is independently arranged, only occupies a small area on a pavement, can be automatically fixed depending on the pavement and is very applicable to the anti-collision design of the highway ramp.

The invention provides an automobile front end hydraulic buffer type anti-collision beam which comprises a bow-shaped main beam, an arc-shaped collision plate is arranged on the front face of the bow-shaped main beam, a hollow communication groove is formed penetrating the center of the bow-shaped main beam, a fixing back plate is arranged on the back face of the bow-shaped main beam, and a plurality of reserved grooves are evenly formed in the middle of the bow-shaped main beam at intervals. And connecting clamping seats are symmetrically arranged at the left end and the right end of the fixing back plate. The bow-shaped main beam serves as a collision main beam and is connected and fixed through a horizontal fixing frame, the bow-shaped main beam and the horizontal fixing frame are connected through the positioning sleeve, a center guide rod and a hourglass energy absorption box, the bow-shaped main beam can conveniently move towards the rear side when collision occurs, and kinetic energy is absorbed through collapse of the hourglass energy absorption box; and the positioning sleeve and the center guide rod are fixed to the bow-shaped main beam and the horizontal fixing frame through the embedded connection structures correspondingly, so that the positioning sleeve and the center guide rod can be disassembled and assembled rapidly, and then the anti-collision beam can be maintained conveniently.

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.

An automatic anti-collision device and an anti-collision method for an automobile are disclosed. The device comprises a mounting frame, a hydraulic damping device is arranged in the mounting frame, a set of induction coils are wound around the hydraulic damping device, the lower side of the hydraulic damping device is connected with wheels, the wheels are in rolling fit with a guide rail connected into the mounting frame, and the rear end of the mounting frame is connected with a rear check block provided with a buffer spring. When the hydraulic damping device is collided and moves backwards, the tail of the hydraulic damping device is in compression fit with the buffer spring. The front end of a telescopic rod of the hydraulic damping device penetrates out of the mounting frame to be connected with an air bag containing body provided with an air bag, and the front end of the air bag containing body is connected with a collision buffering body. A group of electromagnetic coils are wound on the mounting frame, each electromagnetic coil is electrically connected with an electromagnetic driving device, the electromagnetic driving device is electrically connected with a signal acquisition and processing module, the signal acquisition and processing module is electrically connected with a start-stop switch and an audible and visual alarm, and the start-stop switch is electrically connected with an automobile electrical system. Danger prompting and collision damping are combined, the automatic protection function is achieved, and the driving safety is improved.

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 relates to the technical field of building energy conservation and renewable energy utilization, particularly relates to an aluminum alloy profile for a photovoltaic module, and aims at solving problems that in the assembling process of a photovoltaic panel and the aluminum alloy profile, the installation steps are tedious and nonstandard, and the photovoltaic panel is prone to damage. The aluminum alloy profile comprises a plurality of frame units for clamping the photovoltaic panel, wherein each frame unit comprises four aluminum alloy sections forming a rectangular frame body, each aluminum alloy section is provided with a containing cavity for containing the edge of the photovoltaic panel, a top plate and a bottom plate which are horizontal and parallel are arranged above and below each containing cavity respectively, and the top plates and the bottom plates are provided with warped arc edges in the opening direction facing the containing cavities; the warped arc edge gradually widens the width of the opening of the accommodating cavity from inside to outside; and glue sealing cavities are formed in the top plate and the bottom plate, the glue sealing cavities communicate with glue overflowing pieces located in the containing cavities, and the glue sealing cavities are filled with glue. The profile is advantaged in that the photovoltaic panel and the aluminum alloy profile are convenient and fast to assemble, sealing performance is good, and the photovoltaic panel and the aluminum alloy profile are worthy of popularization.

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 provides a magnetic buffering type anti-collision beam at the front end of an automobile. The anti-collision beam comprises a bow-shaped main beam the back surface of which are provided with connecting clamping bases symmetrically on the left side and the right side, with connecting rotating shafts being arranged in the middles of the connecting clamping bases; a horizontal fixing frame arranged on the rear side of the bow-shaped main beam in parallel; and a telescopic guide rod arranged on the rear side of the connecting clamping bases, a circular sliding block is arranged at the rear end of the telescopic guide rod, and a permanent magnet blocking ring is arranged in the middle of the circular sliding block in a surrounding mode. According to the anti-collision beam, the bow-shaped main beam serves as the collision main beam and is fixed to an automobile through the horizontal fixing frame, the bow-shaped main beam and the horizontal fixing frame are connected through the telescopic guide rod and a telescopic guide cylinder, and the bow-shaped main beam can move towards the rear side to enable the telescopic guide rod and the telescopic guide cylinder to slide relatively when collided, then thepermanent magnet blocking ring is driven to slide in a magnetic resistance inner copper tube, and the telescopic guide rod is hindered through electromagnetic resistance generated by a buffer spring and relative sliding of the buffer spring, so that buffering and energy absorption are carried out.

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 a construction method for improving the shock resistance of a tunnel. The construction method for improving the shock resistance of the tunnel comprises the following construction steps that (1) a surrounding rock area needing to be reinforced within a tunnel construction range is determined; (2) the surrounding rock area needing to be reinforced is subjected to grouting reinforcement, and the surface of surrounding rock is repaired through an anti-seismic damping material; (3) primary supporting structure construction is carried out; (4) an inverted arch structure of the tunnel is constructed; (5) a plurality of anti-seismic devices are arranged on the constructed primary supporting structure; (6) secondary supporting structure construction is carried out, a gap is reserved between a secondary supporting structure and a primary supporting structure in the radial direction of the tunnel, and the secondary supporting structure is composed of a steel truss support and a composite structural plate; and (7) an anti-seismic material is injected into the gap, so that the whole gap is filled with the anti-seismic material. According to the construction method for improving the shock resistance of the tunnel, various anti-seismic and shock-absorbing measures are combined to achieve a good anti-seismic effect, the tunnel supporting problem is fundamentally solved, and the anti-seismic capacity of the tunnel is improved.

The invention discloses a stretching type rear-end collision seat energy absorption structure, which comprises a seat cushion side plate and an angle adjuster connecting plate. The front portion of the lower end of the angle adjuster connecting plate is connected with the rear end of the seat cushion side plate to form a first connecting structure, the rear portion of the lower end of the angle adjuster connecting plate is connected with the rear end of the seat cushion side plate to form a second connecting structure, and the second connecting structure is a bolt connecting structure. The first connecting structure is an energy absorption connecting structure composed of an energy absorption part, an upper end bolt connecting structure and a lower end bolt connecting structure. When a rear-end collision occurs in a vehicle adopting the device, the vehicle cannot be collided; passengers have very large impact force on the seat backrest; the energy can be transmitted to the cushion sideplate by the angle adjuster connecting plate through the upper end bolt connecting structure, the energy absorbing part and the lower end bolt connecting structure in sequence; therefore, in the impact process of automobile rear-end collision, the upper end of the energy absorption part and the upper end bolt connecting structure slide backwards along the arc-shaped sliding groove together, the energy absorption part is stretched and deformed in the process, and buffering and energy absorption are achieved.

The invention relates to a front protective device and an automobile, the front protective device comprises a middle body and two protective wings, the two protective wings are detachably installed atthe two ends of the middle body respectively, and a first gap is reserved between the protective wings and the outer surface of the middle body. The outer surface of the middle body is the face, deviating from the vehicle body, of the middle body. Due to the fact that the protection wings are detachably installed at the ends of the middle body, the protection wings and the middle body can be packaged and transported respectively during transportation, the overall size of the front protection device is reduced, and the transportation difficulty is reduced. And meanwhile, when the front protection device is damaged, only corresponding parts need to be replaced, the whole product does not need to be replaced, and the maintenance cost is reduced. Besides, the first gaps are reserved between the protective wings and the outer surface of the middle body, so that when the vehicle body is impacted, the protective wings bear more impact energy, the impact on the middle body is effectively relieved, the buffering and energy-absorbing effects of the front protective device are improved, and the safety of the vehicle body and a user is protected.