37results about How to "Consume impact energy" patented technology

The invention discloses a compound double-wall corrugated pipe, which is prepared from the following components in part by weight: 100 parts of mixture of polythene and polypropylene, 3-10 parts of coupling agent, 3-10 parts of rigid particle, 2-6 parts of master batch, 2-6 parts of blue batch and 3-9 parts of defoaming agent. The preparation process comprises the following steps of: evenly mixing the components in a high-speed mixer; after evenly mixing in a cold mixer, extruding tubes by using a double-host single screw extruder; modulizing, vacuumizing and cooling the tubes to form; and fixing the length and cutting and packaging the tubes. With the blending and the modification of polypropylene and polythene and the use of the rigid particles, the compound double-wall corrugated pipe well solves the problem of strong and unyielding balance, i.e. the tubes has higher toughness while having high annular rigidity. The tubes are made of completely non-toxic raw material and have good sanitary performance as well as the characteristic of simple production process.

The invention discloses a high-performance bionic blast wall member. The member consists of an FRP (Fiber Reinforce Plastic) protective layer and a high-performance wall body, wherein the FRP protective layer comprises a scaly FRP layer, a rubber layer and a polyurethane foaming plastic layer; the high-performance wall body is an ultrahigh-performance reinforced concrete wall or a prestressed block masonry shear wall; the scaly FRP layer is formed on the outermost layer of a blast wall; the rubber layer is adjacent to the FRP layer; the polyurethane foaming plastic layer is adjacent to the rubber layer; the high-performance wall body is adjacent to the polyurethane foaming plastic layer. The design concept of overcoming hardness with hardness in the conventional design is abandoned, and multiple defensive lines are adopted to couple hardness with softness. The scaly FRP outer layer is designed in reference to the lamination structure and mechanics principle of scales, and is an anti-impact layer of the member, the rubber layer is an energy consumption layer of the member, and the polyurethane foaming plastic layer is an energy attenuation layer of the member. The member has the characteristics of light weight, high strength and rapidness in building, blast impact waves can be resisted effectively, and the problems of wall breakage and even splash of scraps in an ordinary blast wall are solved.

The invention provides a flushing preventing valve with a single hydraulic prop, and belongs to the technical field of roadway supporting of a coal mine. The flushing preventing valve has a flushing preventing function, can quickly absorb impact energy, and has a function of lifting and lowering the prop, a function of preventing flushing and absorbing energy in a static-pressure and dynamic-pressure manner and a remote control function. The flushing preventing valve comprises a left valve body and a right valve body, wherein a left division plate and a right division plate are arranged in the left valve body and the right valve body; a control valve element is arranged in the left valve body and the right valve body and comprises an ejector rod, a throttling supporting piston, a buffering piston, a guiding body and a spring; a through hole of the left division plate is blocked by the left end of the ejector rod; the right end of the ejector rod is arranged in a through hole of the right division plate; the throttling supporting piston and the buffering piston are respectively arranged on the left side and the right side of the ejector rod; a prop liquid injecting opening is formed in the side wall of the left valve body; the guiding body is arranged in the right valve body and consists of a chassis and a guiding barrel; an ejector pin is arranged on the left end surface of the chassis; a right valve body bonnet is arranged at the right end of the right valve body; and a handle fixing seat is arranged on a pressure-adjusting rotating wheel and is hinged to the handle.

The invention discloses a multi-stage anti-impact supporting column which comprises a top cover, an energy absorption barrel top cover, hydraulic columns, a multi-stage liquid energy absorption barrel, a trench energy absorption barrel, a hydraulic cylinder top cover, an alloy hydraulic cylinder, a piston, a hydraulic cylinder base, a three-purpose valve and the like, wherein the multi-stage liquid energy absorption barrel is sleeved in the hydraulic columns; the hydraulic columns are sleeved in the prefabricated trench energy absorption barrel; the prefabricated trench energy absorption barrel is sleeved in a light-weight and high-intensity hydraulic cylinder; under a condition of high dynamic load, the multi-stage liquid energy absorption barrel is used for performing quick abdication and energy absorption to prevent the phenomenon that inner elements of the three-purpose valve and column bodies of the hydraulic columns are damaged due to dramatic increasing of pressure in a hydraulic cylinder at the moment of impact and implement quick absorption of the energy which is caused by impact ground pressure and is applied to the supporting column; furthermore, the remote three-purpose valve is used for realizing a function of remotely lifting the supporting column, so that the injuries to people caused by surrounding rock collapse during column falling are avoided, and the safety of workers is guaranteed.

The invention provides an anchor cable breakage impact buffering and protecting device which comprises a cone plug and an opening cylinder, wherein the cone plug and the opening cylinder are sequentially sleeved on an anchor cable. The cone plug comprises a conical barrel provided with a center through hole. Three radial through holes which are communicated with the center through hole and distributed in a 120-degree mode are formed in the outer wall of the conical barrel. A hole entering segment of each radial through hole is provided with an expanding preformed hole. A pre-tightening pin and a spring sleeved on each pre-tightening pin are arranged inside each radial through hole. A hole opening of each radial through hole is provided with a sealing nut. The opening cylinder comprises an inner bore-hole sleeve provided with a penetrating groove along the axial direction. A plurality of axial notches are evenly distributed in the wall of the large bore-hole end of the inner bore-hole sleeve. The buffering and protecting device is arranged on the anchor cable. When the anchor cable is broken, the anchor cable drives the cone plug to move towards the direction of the hole opening. When the cone plug is plugged into the opening cylinder, the opening cylinder is expanded under the effect of pressure of the cone plug and the pre-tightening pin, frictional force between the opening cylinder and the drill hole wall is strengthened so that movement of the cone plug and the anchor cable can be restricted, and buffering protection of anchor cable breakage impact can be achieved.

The invention relates to the technique of prevention of geological hazards, in particular to a debris flow prevention technique. The invention discloses a debris flow multi-stage dissipative blockingstructure, thus damage action of a debris flow can be lowered, and the disaster loss is relieved. According to the debris flow multi-stage dissipative blocking structure, from flowing area of the debris flow to the accumulation area, the debris flow multi-stage dissipative blocking structure is arranged in a step-by-step mode along debris flow channels from the upstream to downstream, and at leastincludes a flexible blocking net, a pile-carrying-type grid wall and a permeable buttress-type gravity dam. According to the debris flow multi-stage dissipative blocking structure, according to different geological conditions, types of the debris flows and the like, the matching structure of the flexible blocking net 2, the pile-carrying-type grid wall 3 and the permeable buttress-type gravity bam is reasonably selected, benefits of the investment in engineering construction can be given full play to the maximum extent, and cost benefit optimization is achieved. The debris flow multi-stage dissipative blocking system is very suitable for prevention of the debris flow disasters.

The invention discloses a pipeline vibration-insulation antishock elastic supporting suspension rack comprising a vulcanization clamp, a supporting member and a power dynamic absorbing assembly. The vulcanization clamp is in a circular ring structure; the supporting member is in a 8-shaped structure and consists of an upper steel ring and a lower steel ring; the upper and lower steel rings are fixedly connected with each other; the power vibration absorbing assembly is formed by a quality block, an upper frequency modulation spring, a lower frequency modulation spring and an adjusting stud; the adjusting stud orderly passes through the upper frequency spring, the quality block and the lower frequency adjusting spring; the bottom of the lower steel ring of the supporting member is fixedly connected to a base seat; the top of the upper steel ring of the supporting member is connected with the vulcanization clamp via a bolt; the upper end of the adjusting stud of the power vibration absorbing assembly is fixedly connected to the middle of the supporting member; and the supporting suspension rack can effectively prevent pipeline vibration transmitting to a ship body structure. Upon external impact to a ship, impact stress to the system pipeline by the external impact and damage can be effectively reduced by elasticoplastic deformation of the elastic support, so system integrity and reliability can be guaranteed.

The invention relates to the technical field of corrugated boards, and in particular, relates to a damp-proof anti-extrusion corrugated board and carton, wherein the damp-proof anti-extrusion corrugated board comprises a waterproof layer, a surface paper layer and an inner paper layer which are sequentially arranged from top to bottom; the waterproof layer is a polyvinyl chloride film and is adhered to the upper end of the surface paper layer through a waterproof adhesive; a corrugated core layer is arranged between the surface paper layer and the inner paper layer; the corrugated core layer comprises a plurality of first core plates which are bonded to the lower end of the surface paper layer at intervals and a plurality of second core plates which are bonded to the upper end of the innerpaper layer at intervals, the first core plates and the second core plates are arranged in a staggered mode, and the two sides of the lower portions of the first core plates are bonded to the corresponding second core plates on the two sides respectively. Through the arrangement of the first core plates and the second core plates, the corrugated board can have good deformation resistance and impact resistance at different positions under the effect of keeping good structural strength, and thus the corrugated board can adapt to different impacts in the carrying process.

The invention discloses an impact-resistant composite board and a preparation method thereof, and belongs to the technical field of building fences. The composite board comprises an impact-resistant material layer (1) and a toughening layer (2), wherein the impact-resistant material layer (1) of the board is made of a steel fiber-reinforced cement-based material; the toughening layer (2) is made of a PVA fiber-reinforced cement-based material; the impact-resistant material layer (1) and the toughening layer (2) are bonded by layered pouring. The impact-resistant composite board can effectively take the advantages of the steel fiber-reinforced cement-based material and the PVA fiber-reinforced cement-based material in an aspect of impact resistance, and has relatively high bearing capability and very strong energy-consuming capability, so that relatively good impact resistance is achieved.

The invention discloses a metal ceramic concrete with high impact resistance at an ultra-high temperature. The metal ceramic concrete per cubic meter contains 400-500 kg of a cementing material, 950-1150 kg of metal ceramic coarse aggregate, 660-715 kg of quartz sand or metal ceramic fine aggregate, 160-180 kg of water, 7-9 kg of a polycarboxylate superplasticizer, 0.5-2 kg of nano-powder, and 3-10 kg of high-strength fiber with high temperature resistance. The metal ceramic concrete disclosed by the invention takes metal ceramic as aggregate, and is provided with a large amount of nano-silicon powder as a mineral admixture, the polycarboxylate superplasticizer and the high-strength fiber with high temperature resistance as an internal structure of the molded material. The metal ceramic concrete has great application prospects in the fields of bridge structures, high-rise buildings, military defense and protection, nuclear power engineering, aerospace engineering and the like.

The invention relates to the field of building anti-seismicity, in particular to a windproof shakeproof device for a high-rise building and a using method of the windproof shakeproof device. The windproof shakeproof device comprises a connecting plate. The connecting plate is fixed to the outer side wall of a building main body through bolts, the connecting plate is vertically arranged, a slidingrod is fixedly arranged at the upper end of the connecting plate, the sliding rod is horizontally arranged, and the sliding rod is slidably connected with a sliding sleeve; a first mass block is fixedly arranged at the bottom of the sliding sleeve, the first mass block is in transmission connection with an acting mechanism, a sliding rail is fixed to the lower end of the connecting plate, the sliding rail is vertically arranged and perpendicular to the sliding rod, a second mass block is slidably connected to the sliding rail, the second mass block is hinged to the first mass block through a connecting rod, and the second mass block is in transmission connection with an energy consumption mechanism. By the adoption of the windproof shakeproof device for the high-rise building and the usingmethod of the windproof shakeproof device, the external force energy applied to the building main body is absorbed and utilized, the impact energy applied to the building main body by the external force is continuously consumed, the damage to the building main body is reduced, and the service life of the building main body is prolonged.

The invention belongs to the technical field of graphene / rubber nanometer composite materials, and relates to an erosion-resistant fluorine rubber nanometer composite material with graphene and a method for preparing the erosion-resistant fluorine rubber nanometer composite material. The erosion-resistant fluorine rubber nanometer composite material comprises, by weight, 100 parts of fluorine rubber, 0.1-15 parts of graphene, 0.5-20 parts of carbon black, 0.5-20 parts of carbon fibers, 3-7 parts of oxide or hydroxide acid acceptors, 2-5 parts of peroxide or bisphenol vulcanizing agents, 0.2-7parts of assistant cross-linking agents and 0.5-5 parts of silane coupling agents. The erosion-resistant fluorine rubber nanometer composite material and the method have the advantages that pre-dispersion treatment is carried out on the graphene by the aid of ball milling processes, accordingly, the dispersibility of the graphene in the fluorine rubber can be improved, the erosion resistance of the fluorine rubber can be effectively improved, erosion loss can be reduced by 62% as compared with fluorine rubber without graphene, the erosion loss further can be reduced by 43% as compared with fluorine rubber which is not subjected to pre-dispersion treatment and is directly additionally provided with graphene, and the erosion resistance can be obviously improved.

The invention discloses an anti-collision device with an energy consumption function for a herringbone tower crane, which comprises two supporting arms and a buffer rubber, wherein each supporting arm comprises a steel channel and a buffer steel channel; the first ends of the buffer steel channels are connected to the first ends of the steel channels in a frictional slide mode; the second ends of the steel channels are fixedly connected to the stable position of a building structure; the second ends of the two buffer steel channels are connected through a rotary louver; and the buffer rubber is fixedly connected to the second ends of the two buffer steel channels. In the actual application, the anti-collision device with the energy consumption function for the herringbone tower crane is installed between a protected object and a tower crane; when the large arm of the tower crane collides with the buffer rubber, the buffer rubber can prolong the collision time and reduce impact force; and simultaneously, the buffer steel channels consume a large amount of impact energy through frictional slide, can further prolong the collision time, reduce the impact force and lighten the rebound of the supporting arms on the large arm of the tower crane, thereby reducing the influence of collision on the tower crane and the large arm of the tower crane.

The invention discloses a water hammer eliminating valve, a water hammer eliminating pipeline and a pipeline water hammer preventing method. The water hammer eliminating valve comprises a valve body provided with a water inlet and a water outlet; and a valve element is arranged in the valve body. The water hammer eliminating valve further comprises a single-rod piston cylinder controlled by external signals; a piston rod of the single-rod piston cylinder is connected with the valve element; the external signals comprise opening or closing signals of a water pump and a valve in a pipeline withthe water hammer eliminating valve; and when the closing signals exist at the downstream of incoming water, the single-rod piston cylinder is controlled to press the valve element on the water outletof the valve body to close the water hammer eliminating valve. The impact of returned water currents to the water hammer eliminating valve or even the whole system can be reduced, and the reverse backflow impact energy consumption can be realized; and the harm of the water hammer effect is effectively reduced, so that the pipeline and accessories thereof are operated safely.

The invention provides a urea-formaldehyde resin-based composite material. The urea-formaldehyde resin-based composite material comprises, by weight, 40 to 60 parts of urea-formaldehyde resin, 6 to 8 parts of PPS, 3 to 4 parts of a compatilizer, 8 to 10 parts of alumina hollow microsphere, 2 to 5 parts of a flexibilizer, 15 to 20 parts of a filling material, 1 to 2 parts of a coupling agent, 1 to 2 parts of a curing agent, 0.5 to 1 part of pigment, 1 to 2 parts of a lubricant and 3 to 5 parts of a stabilizing agent. The invention also provides a preparation method for the composite material. The urea-formaldehyde resin-based composite material for skis has good toughness, hydrolysis resistance and heat resistance and can be applied to a plurality of occasions.

The invention discloses a pipeline impacting resisting protection device. A first annular guide groove, a second annular guide groove, a third annular guide groove are arranged on the inner wall of anenergy absorber shell. Guide bosses are arranged on the peripheral face of an energy absorber lower pressure plate, the peripheral face of an action disc and the peripheral face of an energy absorberupper pressure plate. The guide boss on the energy absorber lower pressure plate is embedded in the first guide groove, the guide boss on the action disc is embedded in the second guide groove, and the guide boss on the energy absorber lower pressure plate is embedded in the third guide groove. The end of a connecting rod sequentially penetrates through an energy absorber lower connecting plate,the energy absorber upper pressure plate, an upper energy absorption block, the action disc and a locking disc. The connecting rod is connected with the action disc and the locking disc, an energy absorber upper connecting plate is connected with the upper end of the energy absorber shell, and the energy absorber lower connecting plate is connected with the lower end of the energy absorber shell.The device has the advantages that active energy consumption is achieved, protection force is constant, and pipeline impacting dynamic stress can be reduced effectively.

The invention discloses a preparing method for an ultra-thin high-density fiberboard. The preparing method comprises the specific steps that (1) after a log material is digested and softened, nanometer antimonous oxide / PP composite fiber is added for hot grinding, heat treatment is carried out after drying, and pulverizing and accurate grinding are carried out to obtain wood powder fiber; (2) thewood powder fiber is placed in a glue blender, a glue material is sprayed onto the surface of the wood powder fiber, then montmorillonite / zirconium dioxide nano composite particles and a maleic anhydride grafted coupling reagent are added, and mixing and blending are carried out to obtain a material; and (3) the material is paved with a paving machine to form a plate blank, hot pressing treatmentis performed after pre-pressing is carried out, and the ultra-thin high-density fiberboard is obtained. According to the preparing method, the log material is adopted as the raw material of the fiberboard, the glue material and all functional auxiliary agents are sufficiently combined with the wood fiber through process machining, and therefore the preparation process is more efficient and environment-friendly; and the high-density fiberboard has the characteristics of being high in strength, high in density, ultra-thin, not easy to be deform, low in carbon, environment-friendly and durable.

The invention discloses a steel strip coil receiving device which comprises a track, a vehicle body arranged on the track, and an air cylinder driving the vehicle body to move along the track. The steel strip coil receiving device further comprises a receiving hopper. The receiving hopper comprises a base plate, a guide column fixed to the lower portion of the base plate, and a V-shaped plate fixed to the upper portion of the base plate. The vehicle body is provided with a sleeve in vertical sliding fit with the guide column. A damping spring is arranged in the sleeve. A blocking frame preventing a steel strip coil from turning over is arranged at the end of the vehicle body. According to the steel strip coil receiving device, due to the fact that the damping spring is arranged between the base plate and the vehicle body, when the steel strip coil falls down to the V-shaped plate, the damping spring is stressed and contracted, the impact energy caused by the steel strip coil to the V-shaped plate and the vehicle body can be greatly consumed away, the receiving hopper and the vehicle body can be protected, the steel strip coil receiving device is prevented from being frequently maintained, and the service life of the steel strip coil receiving device is prolonged.

The invention discloses a multi-stage anti-impact supporting column which comprises a top cover, an energy absorption barrel top cover, hydraulic columns, a multi-stage liquid energy absorption barrel, a trench energy absorption barrel, a hydraulic cylinder top cover, an alloy hydraulic cylinder, a piston, a hydraulic cylinder base, a three-purpose valve and the like, wherein the multi-stage liquid energy absorption barrel is sleeved in the hydraulic columns; the hydraulic columns are sleeved in the prefabricated trench energy absorption barrel; the prefabricated trench energy absorption barrel is sleeved in a light-weight and high-intensity hydraulic cylinder; under a condition of high dynamic load, the multi-stage liquid energy absorption barrel is used for performing quick abdication and energy absorption to prevent the phenomenon that inner elements of the three-purpose valve and column bodies of the hydraulic columns are damaged due to dramatic increasing of pressure in a hydraulic cylinder at the moment of impact and implement quick absorption of the energy which is caused by impact ground pressure and is applied to the supporting column; furthermore, the remote three-purpose valve is used for realizing a function of remotely lifting the supporting column, so that the injuries to people caused by surrounding rock collapse during column falling are avoided, and the safety of workers is guaranteed.

The invention discloses a segmented type intelligent vibration isolator with an impact resistance property, and relates to the technical field of vibration isolation and reduction of civil engineeringstructures. The segmented type intelligent vibration isolator with the impact resistance property comprises a rubber vibration isolation layer, an MRA vibration isolation layer and an interlayer plate shell impact resistance layer, wherein the rubber vibration isolation layer is composed of an upper cover plate, a support column A, a limit ring column A, a ring steel plate, rubber and a cylindrical partition plate; the MRA vibration isolation layer is composed of a cylindrical partition plate, a support column B, a limit ring column B, a circular steel plate, MRE, a coil A and an intermediatecover plate; the interlayer plate shell impact resistance layer is composed of an immediate cover plate, an upper magnetic isolation plate shell, a lower magnetic guide plate shell, a lower magneticisolation plate shell, a magnetic guide plate, a magnetic guide gasket, a support column C, a coil B and a lower cover plate; and the rubber vibration isolation layer, the MRE vibration isolation layer and the interlayer plate shell impact resistance layer together form the segmented type intelligent vibration isolator with the impact resistance property. A three-section design is adopted, the rigidity of the vibration isolator is continuously and uniformly changed, the vibration isolation and reduction of various excitation under the small and large displacement can be realized, and meanwhile, the design of a controllable interlayer arc-shaped plate shell enables the vibration isolator to resist the impact force and dissipate the impact energy under the condition of large load impact.

The invention relates to the technical field of ships, in particular to equipment for stable ventilation of ships, which comprises an air inlet pipe and a main through pipe, wherein a corrugated connecting pipe is connected between the air inlet pipe and the main through pipe, a movable sealing piece is arranged on the corrugated connecting pipe, a fixing piece is fixedly mounted on the main through pipe, a fan and supporting legs are fixedly mounted on the air inlet pipe, the supporting legs are rotationally connected to the rotary disc, the rotary disc is rotationally installed in the limiting ring, the limiting ring is fixedly connected with a reset spring, the reset spring is fixedly connected to the outer ring, the outer ring is fixedly installed on the base, and a connecting base is fixedly installed on the base. The whole ventilation system is supplied with air through the air inlet pipe at the position of the cabin wall of the ship, the air inlet pipe is installed through a double-supporting-leg gravity center concentration structure, the tumbler property is achieved, and when the air inlet pipe is impacted by the outside, the influence of external force can be eliminated as much as possible, impact energy can be consumed as much as possible, and air supply is kept in a stable state.

The invention discloses an electric-arc furnace shock-resistant baffling charging steel scrap preheating chamber-dedusting structure, and belongs to the technical field of metallurgy. The electric-arc furnace shock-resistant baffling charging steel scrap preheating chamber-dedusting structure comprises a steel scrap preheating chamber arranged obliquely, wherein a discharge port in the lower end of the steel scrap preheating chamber is connected with an electric-arc furnace; a dedusting pipe chamber is arranged at the upper end of the steel scrap preheating chamber; a finger-like bracket is arranged at an interface side of the steel scrap preheating chamber and the electric-arc furnace; the steel scrap preheating chamber is provided with at least one bending part; a charging port is formed directly above the upper end of the steel scrap preheating chamber; and a vertical projection surface of the charging port can not be directly projected onto the finger-like bracket. By bending the vertical the steel scrap preheating chamber, steel scrap is completely prevented from directly falling onto the finger-like bracket, the movement direction of the steel scrap is changed by employing oblique surface flow guide, and internal friction and impact are generated in the steel scrap, so that impact energy of the steel scrap on the finger-like bracket is consumed, the falling height of the steel scrap is reduced, the maintenance frequency of a scrap preheating device is reduced greatly, and the reliability of equipment is improved greatly. The electric-arc furnace shock-resistant baffling charging steel scrap preheating chamber-dedusting structure has high popularization value on the electric-arc furnace.

The invention discloses a basketball backboard remote control camera operating bracket for shooting basketball games, which includes a base and a plurality of camera bodies, each camera body is fixed with a camera sliding seat, and the upper end of the base is provided with a chute. The inner wall of the chute is welded with a mounting spring, and the end of the mounting spring away from the side wall of the chute is welded with a supporting slider, and the upper end of the supporting slider is connected to a sliding frame through a hinge, and the sliding frame is connected by a telescopic mechanism. A connecting frame is connected, and the upper end of the connecting frame is rotatably connected with a mounting block through a hinge. The advantage is that by installing the mounting plate on the crossbeam of the basketball rack, the anti-loosening plate is in contact with the crossbeam and the anti-loosening spring is in a compressed state. Small, which in turn makes the connection between the bolts on the mounting plate and the beam more durable, thereby ensuring the stable operation of the camera body.

The invention provides a urea-formaldehyde resin-based composite material, whose components and parts by weight are: 40-60 parts of urea-formaldehyde resin, 6-8 parts of PPS, 3-4 parts of compatibilizer, 8-10 parts of aluminum oxide hollow microspheres, 2-5 parts of toughening agent, 15-20 parts of filler, 1-2 parts of coupling agent, 1-2 parts of curing agent, 0.5-1 part of pigment, 1-2 parts of lubricant, 3-5 parts of stabilizer. The invention also provides a preparation method of the composite material. The urea-formaldehyde resin-based composite material for snowboards provided by the invention has good toughness, hydrolysis resistance and heat resistance, and can be applied to various occasions.

The invention discloses a herringbone tower crane anti-collision device with an energy-dissipation function. The herringbone tower crane anti-collision device comprises two support arms; each support arm comprises a channel steel bar and a buffer channel steel bar; the first end of each buffer channel steel bar is connected with the first end of the corresponding channel steel bar in a frictionally slidable manner; the second end of each channel steel bar is fixedly connected with a stable part of a building structure; the second ends of the two buffer channel steel bars are connected with each other through a rotatable hinge; and cushion rubber is fixedly connected with the second ends of the two buffer channel steel bars. In practical application, the herringbone tower crane anti-collision device with the energy-dissipation function is arranged between a protected object and a tower crane; when the big arm of the tower crane collides with the cushion rubber, the collision time can be prolonged by the cushion rubber, and the impact force can be reduced; meanwhile, a large amount of impact energy can be dissipated through frictional sliding of the buffer channel steel bars; and the impact force is reduced, and the bouncing effect of the support arms on the big arm of the tower crane is reduced, so that the influence of impact on the tower crane and the big arm of the tower crane is reduced.

The invention provides a light roller cage ear with a gas spring hydraulic damper. The roller cage ear is formed by hinging a base, a bracket and a damper, wherein a roller component is arranged on the bracket; the damper consists of a cylinder, a damping valve, a plunger and a damper length adjusting rod; the damping valve is connected with the cylinder; high-pressure nitrogen is filled in the upper part of an air chamber; hydraulic oil is filled in the lower part of the air chamber; the roller component comprises light hubs with lightening holes and clamping rings; bolts penetrate through bolt holes on the clamping rings and hubs and are matched with the semi-circular grooves on a corrosion-resisting roller to form a circular hole, and the corrosion-resisting rollers are fixed on the hubs. The roller cage ear has the advantages that the impact energy can be quickly absorbed by the damper, the bearing capacity is high, the damping performance is high, the impact on a tank channel is small, the initial elasticity and the length of the damper can be conveniently adjusted, and the damper is fully sealed and is long in service life; the roller component is simple in structure, rubber wheels are easily replaced, the hubs have a fully-sealed structure, and the service life of a bearing is long; besides, the roller cage ear is light in weight and long in service life and is not required to be maintained.

The invention provides a guided highway guard device which comprises at least two L-shaped guard rails and a plurality of buffer cylinders. The plurality of L-shaped guard rails are sequentially stacked from front to rear, each L-shaped guard rail includes a horizontal plate, a vertical frame and a screw, the horizontal plate is vertically connected with the front of the vertical frame, the rear end of the horizontal plate of the L-shaped guard rail relatively at the front is stacked at the front end of the horizontal plate of the L-shaped guard rail relatively at the rear, and the horizontalplates of every two adjacent L-shaped guard rails are stacked through screws. The guided highway guard device can overcome resistance movement and absorb impact energy through the L-shaped guard railsand can also guide and buffer impact energy through the buffer cylinders, the buffering effect is good, and intense collision accidents are reduced.

The invention discloses a complex network-based mobile communication apparatus. A communication unit is arranged in a housing; the upper and lower sides of the communication unit are fixedly connectedwith cushion blocks; and a first buffering mechanism is arranged between each of the cushion blocks and the housing; two sides of the first buffering mechanism are respectively provided with second buffering mechanisms; and two ends of the second buffering mechanisms are respectively disposed between the communication unit and the inner wall of the housing. The invention adopts the linkage structure of the first buffering mechanism and the second buffering mechanism. By adoption of a linked design of the first buffering mechanisms and the second buffering mechanisms, when equipment falls offby accident, the housing falls onto the ground at first; at the moment, the communication unit then drives connecting blocks to press through fixed blocks under the impact to the ground, and the connecting blocks drive connecting rods to move; the two connecting rods at the moment can push two resisting blocks to move close to each other; the resisting blocks drive first reset springs to be compressed; and in opening and closing of the first reset springs, most of the impact caused by the ground is consumed.

The invention discloses an impact-resistant composite board and a preparation method thereof, and belongs to the technical field of building fences. The composite board comprises an impact-resistant material layer (1) and a toughening layer (2), wherein the impact-resistant material layer (1) of the board is made of a steel fiber-reinforced cement-based material; the toughening layer (2) is made of a PVA fiber-reinforced cement-based material; the impact-resistant material layer (1) and the toughening layer (2) are bonded by layered pouring. The impact-resistant composite board can effectively take the advantages of the steel fiber-reinforced cement-based material and the PVA fiber-reinforced cement-based material in an aspect of impact resistance, and has relatively high bearing capability and very strong energy-consuming capability, so that relatively good impact resistance is achieved.

The invention discloses a high-performance bionic blast wall member. The member consists of an FRP (Fiber Reinforce Plastic) protective layer and a high-performance wall body, wherein the FRP protective layer comprises a scaly FRP layer, a rubber layer and a polyurethane foaming plastic layer; the high-performance wall body is an ultrahigh-performance reinforced concrete wall or a prestressed block masonry shear wall; the scaly FRP layer is formed on the outermost layer of a blast wall; the rubber layer is adjacent to the FRP layer; the polyurethane foaming plastic layer is adjacent to the rubber layer; the high-performance wall body is adjacent to the polyurethane foaming plastic layer. The design concept of overcoming hardness with hardness in the conventional design is abandoned, and multiple defensive lines are adopted to couple hardness with softness. The scaly FRP outer layer is designed in reference to the lamination structure and mechanics principle of scales, and is an anti-impact layer of the member, the rubber layer is an energy consumption layer of the member, and the polyurethane foaming plastic layer is an energy attenuation layer of the member. The member has the characteristics of light weight, high strength and rapidness in building, blast impact waves can be resisted effectively, and the problems of wall breakage and even splash of scraps in an ordinary blast wall are solved.