80results about How to "Improve energy absorption" patented technology

The invention belongs to the technical field of fiber metal laminates, and particularly discloses an anti-shearing fiber metal laminate and a preparation method thereof. A stainless steel ultra-thin belt, carbon fiber woven cloth and one-way carbon fiber prepreg are laid according to a laying scheme of [W / [G / 0 / G / 90] 2 / Gc] s, modified epoxy resin is coated between every two layers in the laying process, and the anti-shearing fiber metal laminate is obtained after curing; wherein W represents the carbon fiber woven cloth, G represents the stainless steel ultra-thin strip, 0 represents the unidirectional carbon fiber prepreg laid at 0 degree, 90 represents the unidirectional carbon fiber prepreg laid at 90 degrees, Gc represents the central layer, s represents the symmetrical laying layers along the central layer, and 2 represents the repetition frequency of [G / 0 / G / 90]. According to the prepared anti-shearing fiber metal laminate, the anti-shearing performance of the fiber metal laminate is greatly improved, and the possibility of damage such as layering damage, matrix fracture, fiber fracture and metal plastic deformation is reduced.

The invention belongs to the technical field of armor protection, and particularly relates to an anti-penetration bionic spiral laminated backboard packaging ceramic composite structure. According to the composite structure, the metal frame strongly restrains ceramic, so that the erosion efficiency of a ceramic material to a projectile is improved, meanwhile, the damage range under single impact is reduced through packaging, and therefore the multiple-impact-resistant capacity of the protective structure is improved. And the spiral laminated backboard on the lower surface of the ceramic is mainly used for providing back support for the ceramic material, so that the crushing of the ceramic material is delayed, and the penetration resistance of the ceramic is improved. The high-molecular polymer material back plate of the composite protection structure absorbs energy of shots and broken ceramic fragments through large deformation by means of the high tensile strength of the high-molecular polymer material back plate, and therefore the protection structure is prevented from being subjected to aftereffect damage after penetration of the shots. In addition, the overall thickness and the surface density of the composite protection structure are low.

The utility model belongs to the technical field of photovoltaic panels, in particular to a photovoltaic panel mounting mechanism at the top of an industrial factory building, which comprises a mounting frame and an angle adjusting assembly mounted on the surface of the mounting frame, the angle adjusting assembly comprises two fixing rods hinged in a groove formed in the top surface of the mounting frame, and according to the gradient of the roof of the industrial factory building, the angle adjusting assembly can adjust the angle of the photovoltaic panel according to the gradient of the roof of the industrial factory building. A screw rod is rotated to drive a push block to slide in a support plate, a support rod is pushed through the push block, one end of the support rod jacks up a fixed rod, the two fixed rods drive one fixed plate at the same time, then a photovoltaic panel is placed on the fixed plate, and the other end of the photovoltaic panel is inserted into a fixed frame of a U-shaped structure on the top surface of a mounting frame. Meanwhile, bolts on the pressing plates are rotated, the pressing plates of T-shaped structures can be pressed on the photovoltaic panels through the bolts, the photovoltaic panels are fixed, the angles of the photovoltaic panels can be changed, adjustment can be conducted according to the gradient of the roof of the industrial factory building, the sunlight irradiation range is widened, and the energy absorption effect of the photovoltaic panels can be improved.

The utility model discloses a road and bridge anti-collision pier, and relates to the technical field of anti-collision piers. Comprising anti-collision frames, the number of the anti-collision frames is at least two, the two anti-collision frames are fixed, a plurality of inner frames are installed in the anti-collision frames, a plurality of anti-collision plates are further fixed outside the anti-collision frames, each anti-collision frame comprises a patch and an outer blocking piece, and the patch and the two ends of the outer blocking piece are fixed through connecting plates. The surface of the patch is arc-shaped and is attached to the surface of the road pier. Through the arrangement of the anti-collision frame, the inner frame, the anti-collision plate and the like, compared with a traditional construction method, installation of the anti-collision pier is simpler, after the anti-collision frame is installed and fixed through the screw rods, reinforced concrete is poured into the inner frame, a formwork does not need to be erected and then disassembled, and the construction cost is reduced. In addition, the anti-collision pier has good energy absorption and buffering effects, and compared with a traditional anti-collision pier, the anti-collision pier has a good protection effect on the vehicle.

The utility model belongs to the technical field of absorption rods, and particularly relates to a Hopkinson pressure bar absorption rod which comprises a first rod used for being connected with a main rod of a Hopkinson pressure bar. The first bulge is fixed with the edge of the first rod; the second rod is used for being connected with the first rod, a circular groove is formed in the second rod, and a part of the first rod and the first protrusion are arranged in the circular groove. The spring in the pre-compression state is arranged in the circular groove of the second rod, so that the rigidity of the spring is increased, the energy absorption range is widened, meanwhile, certain thrust is applied to the first rod, and the energy absorption effect is improved. When the impact force is smaller than the thrust, the first rods are kept relatively static, when the impact force is larger than the thrust, the first rods extrude the elastic pieces, the elastic pieces reduce reflected waves by absorbing part of impact energy, and therefore the energy absorption efficiency is improved, and the shock wave absorption capacity of the absorption rods is improved.

The invention discloses ZnO-based voltage-sensitive semiconductor ceramic as well as a preparation method and application thereof, and belongs to the technical field of semiconductor ceramic. The ZnO-based voltage-sensitive semiconductor ceramic provided by the invention is prepared from the following components: ZnO, Bi2O3, MnO2, Co3O4, Cr2O3, Sb2O3, Al (NO3) 3, a disulfide bond organic silicon cross-linking agent, a photothermal conversion agent, a photoinitiator, a dispersing agent and a solvent I. The ZnO-based voltage-sensitive semiconductor ceramic has the characteristics of continuous thickness and uniform components, the voltage gradient and the nonlinear coefficient of the ZnO-based voltage-sensitive semiconductor ceramic are superior to those of a traditional product, the parameter drift rate after surge impact is small, and the ZnO-based voltage-sensitive semiconductor ceramic can be applied to high-end application scenes such as vehicle-mounted chargers of new energy automobiles.

The damping and buffering connecting mechanism comprises a switching assembly and a damping assembly, the switching assembly is arranged at the top end of a machine gun frame, the top of the switching assembly is connected with the damping assembly, and the top of the damping assembly is connected with the infrared sighting telescope; the adapter assembly comprises an adapter base, the adapter base is connected with an energy absorption adapter plate, and the energy absorption adapter plate is connected with a Picatinny guide rail piece; the damping assembly comprises a locking base and a locking bolt, the half side of the locking bolt is tightly embedded into the locking base, and the other half side of the locking bolt is tightly embedded into a transverse groove of the picatinny guide rail piece. The locking seat is connected with a connecting frame, and a damping shock absorber and a damping spring are arranged between the connecting frame and the connecting seat. According to the scheme, the shock absorption device has the beneficial effects that the structure is simple, the design is reasonable, and the shock absorption assembly is adopted to effectively protect the infrared sighting telescope, so that the shock absorption device adapts to the impact force of various machine guns with small and medium diameters, the use reliability of the infrared sighting telescope is improved, and the tactical application performance of the machine guns is powerfully ensured.

The utility model provides a kind of ECC bridge crash barrier belongs to ECC bridge field, including frame, energy-absorbing installation component being arranged in the inside of frame and support fixed component being arranged on the surface of frame, energy-absorbing installation component includes the vertical barrel being arranged in the inside of frame, vertical barrel is internally provided with inner chamber, detachably connected with water storage bucket in inner chamber, internally fixedly connected with fixed column, energy-absorbing is carried out by vertical barrel, support fixed component includes the support rod of detachably connected in one side of the surface of frame, the utility model frame inside both ends are equipped with connecting seat, connecting seat is attached to the inside surface of frame, wherein connecting seat surface is all provided with connecting hole, fixed column surface is equipped with vertical barrel, vertical barrel is installed to water storage bucket by the inner chamber being internally provided, water storage is carried out by water storage bucket, energy-absorbing work is carried out when collision occurs, increase the anti-collision property of whole, and then ECC bridge crash barrier is used, and the energy-absorbing property of whole is higher.

The utility model discloses a permanent and temporary combined steel cofferdam suitable for a shallow water tidal zone, which comprises a bearing platform pile foundation (1), a protection structure (2) is arranged on the outer side of the bearing platform pile foundation (1), the protection structure (2) comprises a steel pipe pile (21) arranged on the outer side of the bearing platform pile foundation (1), a lock catch (22) is arranged on the side edge of the steel pipe pile (21), a buckle block (23) matched with the lock catch (22) is arranged on the other side of the steel pipe pile (21), and the buckle block (23) is connected with the bearing platform pile foundation (1). The bearing platform pile foundation (1) is surrounded by the connected steel pipe piles (21), and the outer side of each steel pipe pile (21) comprises the side shell (3), so that the water surrounding problem of construction of the bearing platform pile foundation (1) can be effectively solved, the structure is simple, construction is convenient, large equipment and equipment are not needed, the influence on a channel is small, the construction cost can be effectively reduced, and the construction efficiency is improved. And energy dissipation schemes are designed on the inner sides and the outer sides of the steel pipe piles (21), so that good collision prevention and energy absorption capacities are achieved, and ships and bridge piers and abutments are protected.

This utility model discloses a tiered energy-dissipating anti-ship collision system based on metamaterial structures, including an ultra-high performance concrete panel, a tiered energy-dissipating anti-collision layer, a rubber fender, bridge piers, bridge abutments, and bridge pile foundations. The tiered energy-dissipating anti-collision layer includes variable stiffness units, lightweight energy-dissipating materials, vertical steel plates, an upper top plate, and a lower bottom plate. The variable stiffness unit is composed of multiple concave hexagonal units connected by transverse and longitudinal steel plates, with the hollow structure in the middle filled with lightweight energy-dissipating materials such as polyurethane foam, ceramsite, and rubber granules that can absorb and disperse impact energy. The variable stiffness units are welded to the steel plates to form a whole, and the protective device is connected to the protected bridge pier through the rubber fender. The overall stiffness of the protective device increases with structural deformation upon impact, thus this utility model has a variable stiffness tiered energy-dissipating anti-collision effect, effectively prolonging the collision time between the ship and the bridge and reducing the impact force of the ship, achieving two-way protection for both the ship and the bridge.

This application provides an anti-climb energy-absorbing device and a rail vehicle. The anti-climb energy-absorbing device includes: a mounting base; an installation space within the mounting base; a bulging seat disposed within the installation space; an arc-shaped bulging surface at the front end of the bulging seat; an energy-absorbing tube inserted into the mounting base from the front end and covering the outside of the bulging seat; an installation groove extending along the length of the energy-absorbing tube on the outer circumferential surface of the rear end of the energy-absorbing tube, extending forward from the rear end of the energy-absorbing tube to a preset stop position; and a planing blade disposed on the front end surface of the mounting base, with the planing edge of the planing blade inserted into the installation groove and located at the preset stop position of the installation groove. The anti-climb energy-absorbing device and rail vehicle provided by this application reduce the difficulty of the assembly process and are easy to install and maintain.

The folding engine hood comprises a main body and a guide rail arranged at the bottom of the main body, the main body is segmented and hinged in the length direction of a vehicle body, the first end of the main body is hinged to the vehicle body, the second end of the main body is fixedly connected with a sliding ball, and the sliding ball is arranged on the guide rail. The guiding direction of the guiding track is in the length direction of the vehicle body, and a locking part is arranged in the non-end area of the guiding track. The sliding ball drives the first end of the main body to move towards the back of the vehicle body and lift the main body when bearing acting force towards the back of the vehicle body, and when the sliding ball is locked to the locking part, the main body vertically protrudes upwards. According to the engine hood, the main body of the engine hood is sectionally arranged, hinged and matched, so that the engine hood is lifted in the vertical direction when the front end of a truck body is impacted and can be in contact with a higher chassis at the tail of the truck to protect a passenger compartment; and meanwhile, the lifted main body is in rigid contact with the truck to generate obvious speed reduction so as to feed back that the air bag pops up and protect passengers.

The utility model discloses a bridge anti -collision device based on the coupling of shear hardening and negative poisson's ratio effect, including a plurality of energy -absorbing box and a plurality of fixed ring, a plurality of energy -absorbing box evenly is placed in the outside of pier and is closely spliced between adjacent energy -absorbing box, a plurality of fixed ring is evenly placed on the outer ring surface of pier and is in the embrace shape, and the fixed ring between adjacent is closely connected to be connected into a whole around pier, and the energy -absorbing box is buckled on the outside of fixed ring, and the bolt for fixing energy -absorbing box and fixed ring is inserted between energy -absorbing box and fixed ring from top to bottom, the utility model relates to building safety protection technical field, through the collaborative energy -absorbing mechanism of the introduction of negative poisson's ratio effect and shear hardening effect, the bridge anti -collision device of structure stable, energy -absorbing efficient has been constructed, and simultaneously through the modularization and the bolt type design, the quick dismounting and partial replacement function of device have been realized, and maintenance difficulty and cost have been reduced, have good engineering applicability and popularization prospect.

The utility model relates to a protection plate and a new energy battery pack, and belongs to the technical field of new energy. The protection plate comprises a first surface layer, a metal layer, a fiber felt and a second surface layer which are sequentially arranged, the first surface layer comprises a first fiber reinforced resin layer and a second fiber reinforced resin layer which are sequentially arranged, and the first fiber reinforced resin layer comprises N1 layers of continuous fiber reinforced resin sheets which are sequentially stacked in the thickness direction of the first fiber reinforced resin layer; the second fiber reinforced resin layer comprises N2 layers of continuous fiber reinforced resin sheets which are sequentially stacked in the thickness direction of the second fiber reinforced resin layer, and N1 and N2 are independently integers not less than 1. According to the utility model, the first surface layer, the fiber felt, the metal layer and the second surface layer are stacked in sequence, so that the protection plate is lighter than an existing metal protection plate with a single structure, has the advantages of high rigidity, impact resistance, high energy absorption and high plasticity, and can effectively protect the new energy battery pack.

The application discloses a guardrail plate mounting support structure and relates to the technical field of highway protection facilities. The guardrail plate mounting support structure comprises a top plate, side plates, mounting plates and energy-absorbing pieces. The top plate is fixedly arranged at the top end of a stand column. Two side plates are symmetrically arranged along the top plate. Each side plate is fixedly connected with the bottom end of the top plate. Each side plate is fixedly provided with a mounting hole. The mounting plates are correspondingly arranged with the side plates. Each mounting plate is fixedly arranged on the corresponding side plate. Each mounting plate is fixedly provided with a connecting hole. The energy-absorbing pieces are fixedly arranged between the two side plates. The energy-absorbing pieces can absorb the impact force generated when a vehicle collides with the guardrail. The application has the energy-absorbing effect of the highway guardrail.

The utility model relates to the technical field of shield tunneling machines, in particular to a moving device for green construction of a shield tunneling machine, which comprises a main body, a moving support component is arranged at the bottom of the main body, and a tunneling component is arranged on the main body; two-way adjustment of moving and fixing of the shield tunneling machine can be achieved through the ground feet and the moving wheels, flexibility of the shield tunneling machine is improved, when the shield tunneling machine needs to be fixed, the internal hydraulic supporting rods are driven by the hydraulic cylinders to ascend and descend, the ground feet make contact with the ground, the moving wheels leave the ground at the moment, and the shield tunneling machine is fixed. A threaded block moves on a lead screw in a positive and negative rotation driving mode of a motor, so that a shield tunneling machine body at the top of a bearing plate can be driven to stretch out or return, and the shield tunneling machine body at the top of the bearing plate is driven to slide on a sliding rail in cooperation with a sliding block, so that stable tunneling work of the shield tunneling machine is achieved. And the stability of tunneling work can be improved while high-efficiency work is realized.

The utility model discloses a thermoplastic polypropylene (PP) cellular board, which relates to the technical field of cellular boards and comprises an upper surface layer, a lower surface layer and a cellular structure layer, the upper surface layer and the lower surface layer are respectively adhered to the upper surface and the lower surface of the cellular structure layer in a hot melting manner, and the cellular structure layer comprises an upper cellular layer and a lower cellular layer which are arranged in parallel. The upper honeycomb layer comprises a plurality of round tube core materials, the round tube core materials are arranged in a honeycomb shape along the same plane, energy absorption inner cylinders are fixedly bonded to the inner walls of the round tube core materials, and trumpet-shaped pressure dispersing holes are formed in the upper ends and the lower ends of the energy absorption inner cylinders. The energy-absorbing inner cylinder is arranged in the circular tube core material, the energy-absorbing effect of the energy-absorbing inner cylinder can be improved through the trumpet-shaped pressure dispersing holes in the energy-absorbing inner cylinder, sudden breakage of the circular tube core material is avoided, the supporting force of the circular tube core material can be enhanced through the cooperation of the reinforcing ribs, and therefore the overall pressure resistance of the cellular board can be improved, and the breakage probability can be reduced.

The utility model relates to the technical field of vehicle engineering, in particular to a doorsill beam structure and a vehicle body structure. The doorsill beam structure comprises a cross beam formed by rolling a rolling plate, and the cross beam is provided with at least two energy absorption cavities and isolation plates located between the adjacent energy absorption cavities; the first end of the rolling plate is bent to form a first guide edge, the first guide edge is located in one of the energy absorption cavities and abuts against the isolation plate, and the second end of the rolling plate is the end, away from the first guide edge, of the isolation plate. The second end is bent towards the energy absorption cavity where the first guide edge is located to form a second guide edge. Therefore, the cross beam formed by winding the roller plate has rigidity and structural stability and is used for supporting a vehicle body structure. When the cross beam is collided, the first guide edge and the second guide edge curl or move towards the corresponding energy absorption cavities, and the threshold beam structure has a better energy absorption effect in cooperation with the energy absorption effect of the energy absorption cavities.

The application provides a crash beam, a crash beam assembly and a vehicle. The crash beam comprises a beam body and a reinforcing member. The reinforcing member is arranged at an end of the beam body along a first direction. The end of the beam body is provided with a plurality of mounting portions along a third direction and / or a second direction. The reinforcing member is connected with at least one mounting portion. The first direction, the second direction and the third direction intersect. The crash beam can reasonably avoid the mounting positions of other components, and improve the strength of the crash beam and the energy absorption effect in the crash working condition.

The application provides a high-performance insulation blanket, which comprises a surface layer, an EVA adhesive layer and a surface layer arranged in sequence, and the surface layer and the EVA adhesive layer are calendered and bonded; the preparation raw materials of the surface layer comprise, in parts by weight, 45-55 parts of ethylene-vinyl acetate copolymer, 10-20 parts of natural rubber, 8-18 parts of PA6 short fiber, 7-10 parts of dopamine modified mica powder, 6-10 parts of MAH-g-EVA, 10-15 parts of flame retardant, 0.2-0.4 parts of antioxidant, 0.8-1.2 parts of lubricant and 2-4 parts of colorant. In the surface layer formula system, the natural rubber, the PA6 short fiber and the dopamine modified mica powder synergistically act, so that the tear resistance and the puncture resistance of the material are greatly improved, and meanwhile, the material has excellent comprehensive performances such as high-temperature resistance, insulation, flame retardation and aging resistance, and is suitable for high-demand insulation protection fields.

The utility model discloses an anti-collision bar, a bumper assembly and a vehicle. The anti-collision bar comprises an anti-collision bar body and a buffering reinforcing part, a cavity is formed in the anti-collision bar body, and the buffering reinforcing part is arranged in the cavity; the bumper body comprises two first side walls oppositely arranged in the first direction and two second side walls oppositely arranged in the second direction, and the first direction intersects with the second direction. The second side wall protrudes towards the interior of the cavity to form a protruding part, and the buffering reinforcing piece is at least connected with the protruding part. Due to the fact that the buffering reinforcing part is arranged in the anti-collision bar body, when the anti-collision bar is subjected to large impact force or compression action, the two second side walls of the anti-collision bar body can crush and deform towards the interior of the cavity to absorb impact energy, and the buffering reinforcing part in the cavity of the anti-collision bar body can generate deformation action opposite to the two second side walls in direction. Further deformation of the second side wall is hindered, so that the rigidity of the bumper body is enhanced, the energy absorption effect of the bumper is improved, and injuries to passengers and drivers are reduced.

The application provides a vehicle body front end structure and a vehicle. The vehicle body front end structure comprises a reinforcing support arranged on a front bumper, the reinforcing support comprises a main body part and an extension part arranged at the bottom of the main body part; the main body part is connected with a bumper body of the front bumper, the bumper body has a mounting area for mounting a license plate, the extension part extends downward along the up-down direction of the whole vehicle, and a connecting part is arranged on the extension part, the connecting part is located at the rear side of the mounting area and is connected with a lower grille of the front bumper. The vehicle body front end structure has the extension part arranged on the main body part and connected with the lower grille, which is beneficial to improving the strength of the vehicle body front end in the up-down direction of the whole vehicle and the continuity of force transmission, and the fastening stress point when the connecting part is connected with the lower grille is located in a non-visual area, which is beneficial to solving the problem of visual light shadow disorder of the front bumper caused by force pulling and improving the appearance of the front part of the whole vehicle.

The application provides a three-dimensional four-chiral compression-torsion metamaterial structure and a manufacturing method thereof, comprising: chiral structure units and connecting panels; the chiral structure units are compression-torsion metamaterial structures, and two adjacent chiral structure units are directly connected or connected through the connecting panels; the chiral structure units have five, one of which is placed in the middle, and the other four chiral structure units are directly connected to the outside of the chiral structure unit. The compression-torsion effect of the application is better than that of the traditional three-dimensional compression-torsion metamaterial, the specific energy absorption effect of the structure in the application is better, the universality is higher, and the stability of the structure is ensured. The torsion of the structure can be adjusted by changing the torsion direction of the four-chiral, and the torsion angle of the structure can be changed by adjusting the geometric parameters of the chiral structure unit. The compression-torsion coupling effect can be realized when the structure is loaded, and the energy absorption effect of the structure is improved to a greater extent.

The present invention belongs to the technical field of automobile accessories, and in particular, is a side energy absorption and anti-collision device for a fuel tank. In view of the problem that the fuel tank is easily deformed and exploded when hit, the following scheme is proposed, including a fuel tank body and a protective layer. The fuel tank body is arranged inside the protective layer. The bottom outer wall of the protective layer is fixed with a fixed vertical plate, and the top outer wall of the fixed vertical plate is fixed with a support plate. The top of the support plate is fixed with a first mounting plate, and the bottom outer wall of the first mounting plate is fixed with two symmetrically distributed first fixed plates. The protective layer of the present invention collides with the outside world, absorbs the energy generated by the impact force, and the protective layer is deformed and contacts the internal buffer structure. The first mounting plate is forced to move downward, the support plate is forced to bend, and the first spring is shortened to absorb part of the energy generated by the impact, and most of the internal force generated by the impact is removed, thereby protecting the safety of the fuel tank and preventing the fuel tank from exploding due to a strong impact, causing heavy losses and casualties.

The utility model provides a front cabin cover plate and a vehicle. A front cabin cover comprises a front cabin cover inner plate and a front cabin cover outer plate which are connected together in a buckled mode. Crumple holes are formed in the left side and the right side of the front portion of the front cabin cover inner plate, the crumple holes in the sides are arranged close to the headlamp on the same side, and the crumple holes in the sides are a plurality of plates arranged at intervals from front to back along the edge of the front cabin cover inner plate. According to the front cabin cover plate, the crumple holes are formed in the portions, prone to colliding and making contact with pedestrians, of the front cabin cover inner plate, collision energy can be absorbed through crumple deformation of the positions where the crumple holes are located when collision occurs, collision damage to the pedestrians can be reduced, and the pedestrian protection performance of the front cabin cover can be improved.

The utility model discloses a multi-stage energy dissipation self-floating type ship collision prevention device, and relates to the technical field of bridge collision prevention. The floating energy dissipation device comprises a first floating energy dissipation mechanism and a second floating energy dissipation mechanism which can float on the water surface and are connected with each other through a connecting frame. The second floating energy dissipation mechanisms sleeve the periphery of the pier at intervals, the first floating energy dissipation mechanisms are arranged around the second floating energy dissipation mechanisms, and the first floating energy dissipation mechanisms and the second floating energy dissipation mechanisms can slide relative to the connecting frame. Each connecting frame is provided with two sets of energy dissipation pieces, one set of energy dissipation pieces is located between the first floating energy dissipation mechanism and the connecting frame, the other set of energy dissipation pieces is located between the second floating energy dissipation mechanism and the connecting frame, and the rigidity of the two levels of floating energy dissipation mechanisms is larger than that of the energy dissipation pieces. When the ship collides, the first floating energy dissipation mechanism deviates inwards and sequentially extrudes the energy dissipation pieces at all levels and the second floating energy dissipation mechanism, step-by-step energy dissipation is achieved, and the collision energy is absorbed to the maximum extent. Compared with the prior art, the damage risk of ship collision to the bridge structure can be effectively reduced.

The invention discloses a lightweight vibration-damping lathe tool bar, which belongs to the technical field of machine tool tools. The lathe tool bar of the invention comprises a tool body, a plurality of cavities are provided on the tool body along the length direction, and the tool body between adjacent cavities has a BCC lattice structure; a closed magnetic pole device comprises a plurality of magnetic pole pieces respectively located on the bottom and side walls of the cavity; a pendulum-type vibration absorber is placed inside the closed magnetic pole device formed by the plurality of magnetic pole pieces, and magnetic pole patches corresponding to each magnetic pole piece are respectively provided on the outer surface of the pendulum-type vibration absorber, and the magnetic pole patches have the same polarity on the side opposite to each magnetic pole piece, so that the magnetic force of each magnetic pole piece and the corresponding magnetic pole patch repel each other. While ensuring the rigidity, the invention reduces the weight of the tool bar, weakens the influence of the cutting vibration caused by the long overhang of the tool bar, and realizes vibration transfer by relying on the pendulum-type vibration absorber structure, thereby suppressing chatter, improving processing stability, and ensuring processing accuracy.

A novel bidirectional bearing honeycomb anti-creeper relates to the technical field of anti-creeper, and comprises a mounting base, a buffer assembly and anti-creeper teeth, the mounting base is connected with the buffer assembly, the buffer assembly is connected with the anti-creeper teeth, the buffer assembly comprises a thin-wall shell and a bidirectional bearing corrugated honeycomb structure, the bidirectional bearing corrugated honeycomb structure is arranged in the thin-wall shell, and the anti-creeper teeth are arranged in the thin-wall shell. The thin-wall shell comprises a side plate, an upper skin and a lower skin, the upper skin is combined with the upper surface of the side plate, and the lower skin is combined with the lower surface of the side plate. The variable amplitude sine wave is introduced in the axial direction on the basis of a traditional honeycomb cell element, the bending angle is added in the radial direction, the oneness of the bearing direction of a traditional honeycomb is broken through, the honeycomb can bear longitudinal loads, and the bearing capacity in the vertical direction is remarkably improved. Compared with a traditional honeycomb anti-creeper, the energy absorption capacity is higher, axial ordered deformation can be kept when the anti-creeper resists vertical force, and dependence on a traditional drawer guide mode is eliminated.

The present invention discloses a fiber metal composite laminate and a preparation method thereof, and belongs to the technical field of preparation of advanced composite materials. The present invention first grinds MWCNT, PEG and SiO2 together to obtain MWCNT-STF, and then fills the MWCNT-STF dilution obtained after dissolving the MWCNT-STF into the gaps between fiber fabrics or attaches to the surface of the fiber fabric through ultrasonic impregnation, thereby increasing the friction between fiber fabric yarns, and then stacks the MWCNT-STF / fiber fabric, aluminum plate and adhesive film, and obtains a fiber metal composite laminate after hot pressing. This fiber metal composite laminate has strong anti-penetration ability, strong energy absorption ability and good impact resistance.