42results about How to "Extended collision time" patented technology

The invention relates to a particles-impact damper with an elastic support. The inner part of the particles-impact damper is provided with an elastic energy-storage component and a plastic impact energy-dissipation component. The invention is characterized in that the particles-impact damper is connected with a controlled main system through the elastic support and the natural vibration frequency of the particles-impact damper is not greater than that of the controlled main system. The elastic support can be a spiral spring, a plate spring or an elastic cushion; and free movement direction of the elastic support is identical to the vibration direction of the controlled main system. The particles-impact damper can effectively reduce acceleration in impact process and decrease impact on the controlled main system so as to consume vibration energy of the controlled main system to the maximum extent, reduce the energy retransmission to the controlled main system and alleviate the impact of ultraharmonics and subharmonic. The particles-impact damper can be applied to the vibration control of nonlinear systems with low frequency and dense modes.

An anti-collision guardrail, comprising a guardrail foundation (1), a column (2), a beam (3) and an energy-absorbing threaded part (4), the guardrail foundation (1) is F-shaped, placed horizontally in the roadbed, and the guardrail foundation (1 ) on the foundation beam (11) on the rear section to open a guide groove (12), in the foundation beam (11) at the front end of the guide groove (12), a hole (13) is provided along the longitudinal direction, and a hole (13) is set in the hole (13). The energy-absorbing threaded part (4), the column (2) is arranged in the guide groove (12) and connected with the energy-absorbing threaded part (4), the beam (3) is arranged in front of the column (2) and connected with the column (2) . The invention has the characteristics of firm foundation, no encroachment on the effective driving road surface, buffering and energy absorbing effect when the vehicle collides with the guardrail, reduced collision intensity and good guiding ability, and can minimize the damage to the vehicle and passengers caused by the collision. It is especially suitable for highway anti-collision barriers and bridge anti-collision barriers on cliffs.

The invention discloses a buffering device, and particularly discloses a breakage-proof buffering device for lump coal. The breakage-proof buffering device comprises a supporting seat, wherein a head shield is arranged on the supporting seat; a chute which is oblique downwards is formed below the head shield; and the chute is a circular-arc curved chute. The chute is the circular-arc curved chute, so that sufficient centrifugal force is generated by the lump coal through acceleration, and the lump coal can perform set curvilinear motion in a buffering device; meanwhile, a centripetal acceleration is generated under the action of composite force, so that the direction of the lump coal is changed, the friction surface of the lump coal along the buffering device is transferred, a free-fall motion is changed into a specific curvilinear motion, the moving speed of the lump coal is lowered greatly, and the collision time of particles is prolonged; and meanwhile, in a process when particles become static from moving, a tangential-velocity component is generated, full non-elastic collision is avoided, and the lump coal is effectively prevented from being broken.

The invention relates to a redundancy control method of an automatic driving system, the automatic driving system, an automobile, a controller and a computer readable storage medium, which are used for keeping running along the center line of a lane when the automatic driving system has a fault and the fault does not exceed tolerance. The method comprises the steps of: when an automatic driving function is activated, fitting a safe path equation enabling a vehicle to run along the center line of a lane according to information collected by a forward-looking camera and a radar, and determiningthe lane width of the lane where the vehicle is located currently; according to the coefficient of the safe path equation and the determined lane width, determining a current specific offset area of the vehicle; determining the current fault level of a main control subsystem according to the offset area where the vehicle is located and whether the vehicle activates the function of a first redundant safety control module in the previous control period or not; and activating the redundancy control function of the corresponding level according to the current fault level of the main control subsystem, and controlling the vehicle according to the redundancy control function of the corresponding level.

The invention relates to the technical field of machine tools, and discloses a collision-prevention device and a machine tool. The collision-prevention device comprises a socket, a guide rod and an elastic element, wherein the guide rod is telescopically arranged in the socket, and the elastic element is used for maintaining the guide rod in the extended state. With the collision-prevention device provided by the embodiment of the invention, impact energy generated by collision between a base body and a moving component during use can be effectively absorbed, the collision time is prolonged, elastic opposite force is generated, and the elastic collision between the base body and the moving component and the spacing of the moving element are realized. In addition, the entire device requires fewer components and has simple structure, easiness in assembly and good impact resistance, and the service life and the working accuracy of the moving component, the base body and relative functional components are increased.

The invention relates to the technical field of impact and buffering, in particular to a gas damping and buffering free piston. The gas damping and buffering free piston comprises a buffering cavity,an end cover, a buffering piston and a collision body, wherein a buffering gas cavity is formed in the buffering cavity; a buffering gas with a certain pressure can be inflated into the buffering gascavity; one end of the buffering piston penetrates through the end cover to be inserted into the buffering gas cavity; and the other end of the buffering piston is connected with the collision body. According to the gas damping and buffering free piston, as the collision is finished in twice and kinetic energy is consumed in twice, the energy, needing to be absorbed in one time, of the collision body is reduced, the collision time is greatly prolonged to be beneficial for reducing impact load generated by collision, and therefore, the impact load peak value is reduced; in addition, the buffering piston and the collision body stop moving first during collision; and as the buffering gas is available in the buffering gas cavity, the buffering cavity decelerating and stopping time can be greatly prolonged, and direct collision between the buffering cavity and the buffering piston is avoided; and moreover, the pressure in the buffering cavity is gradually increased, the gas damping and buffering free piston is more beneficial for the collision body to recover from the first collision.

The invention provides an anti-collision guardrail of single-beam steel, comprising a single-beam guardrail plate, an assembling plate, a reinforcing steel pipe, an assembling bolt, a protecting block and an upright post. The cross section of the single-beam guardrail plate is in the shape of arc; the upper edge and the lower edge of the guardrail plate are inward and spirally rolled towards the protruding direction of the guardrail plate, so as to form two energy storage rings; through the assembling bolt, the single-beam guardrail plate and the reinforcing steel pipe are connected together, and the assembling plate is arranged between the single-beam guardrail plate and the reinforcing steel pipe. Through the protecting block, the assembled guardrail plate is connected with the guardrail upright post together. When collision happens, the energy storage rings at upper and lower sides of the guardrail plate can be opened; compared with the other anti-collision guardrails, the anti-collision guardrail has better buffer property. Besides, the inner part of the protecting block is hollow; when collision happens, a secondary buffer is carried out, thereby greatly reducing the collision destructive effect.

The automobile anti-collision device is installed in the automobile part susceptible of collision and consists of a bumper connected set on automobile casing, a piston connected to the bumper and pushing the medium inside the cylinder, a spring around the piston rod and a cylinder with several releasing holes and membranes installed. In case of collision, the anti-collision device converts the rigid collision into elastic collision and releases energy via the releasing holes to protect automobile and persons inside it.

The invention discloses an automobile collision bumper, and relates to the technical field of automobiles. The automobile collision bumper comprises a hydraulic buffer mechanism fixed to the front end and / or the rear end of an automobile chassis, wherein the hydraulic buffer mechanism comprises at least three crush buffer units which are connected in series in an end-to-end mode, each crush buffer unit comprises a sleeve, each sleeve is provided with a crush rod with a pointed end in a sliding seal mode, a blocking sheet is fixed to the outer side of the pointed end of each crush rod in a sealing mode and is arranged on the inner wall of the corresponding sleeve, a liquid chamber filled with liquid is arranged between each blocking sheet and the corresponding crush rod and is arranged in the corresponding sleeve, and a drainage hole is formed in the portion, on the outer side of the corresponding liquid chamber, of each sleeve. The automobile collision bumper has the advantages that when the automobile collision bumper is installed on an automobile, due to the facts that the multiple levels of crush buffer units which are connected end to end are used, the blocking sheets are crushed step by step, and liquid is ejected out at a high speed, kinetic energy in the collision process of the automobile is converted, the collision time of the automobile can be prolonged, impact force is reduced, kinetic energy generated in the collision process can be absorbed, and the purpose that a human body and an automobile body are protected against damage at the same time is achieved.

The invention discloses a spiral cushion blanking device which comprises a material input section, a cushion section, a standard section, a material output section and a support. The spiral cushion blanking device is mounted inside a coal bunker and is of a box type structure, space type of the spiral cushion blanking device is a space spiral curve, the lower end of the material input section is connected with the cushion section, the lower end of the cushion section is connected with the standard section, the lower end of the standard section is connected with the material output section, and the lower end of the cushion section and the upper end of the standard section are fixed on a wall of the coal bunker through the support. The spiral cushion blanking device reduces impact force of coal flow, does not cause blocking accidents of the coal bunker easily, is low in operating cost, constant in effect of lump coal loss reduction, and is reasonable and compact in structure.

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 provides a water quality sample collecting device for microorganism water quality detection. The device comprises a base, a warning limiting ring, a sampling bottle, a floating plate, a storage box and a rod sleeve, inserting rods are installed at the four corners of the interior of the base in a penetrating mode through inserting holes, the bottom surfaces of the inserting rods are sleeved with the rod sleeve, and the storage box is installed at the top of a reinforcing plate; a fixing rod is installed on the back face of the storage box, the warning limiting ring is fixed to the bottom of the fixing rod, a shaft rod is installed on the inner wall of the storage box, a traction rope is wound around the surface of the shaft rod, the tail end of the traction rope is connected with the sampling bottle, the floating plate is transversely placed in the sampling bottle, and a sample holder is fixed on the inner bottom wall of the storage box. By arranging a series of components, the collecting device has the advantages that the sealing stability in the sampling bottle can be ensured in the sampling process, warning and reminding can be performed after the sampling bottle is full of water, the sampling bottle can be taken out in time, and the convenience and quickness in the use process of the device are ensured.

The invention provides an explosive bolt protecting device for retarding operational fragments and an explosive bolt system and belongs to the technical field of rocket separation. The explosive boltprotecting device comprises a first protecting casing and a second protecting casing, wherein the first protecting casing comprises a first box body of which one end is opened and a first cover platematched with the first box body; the second protecting casing comprises a second box body of which one end is opened and a second cover plate matched with the second box body; the first side wall of the first box body is attached to the first side wall of the second box body; the first box body is used for fixing an explosive bolt, so that two ends of the explosive bolt are respectively positionedin the first protecting casing and the second protecting casing; buffer components are arranged on the second side wall of the first box body and the second side wall of the second box body; the second side wall is opposite to the first side wall; each buffer component comprises a first metal layer and an elastic buffer layer which are laminated; each elastic buffer layer is connected with the second side wall. According to the device, local impact force borne by the explosive bolt box body can be reduced and the condition that a box body structure is locally broken to form fragments is avoided.

The invention discloses a vortex heater, and relates to the technical field of natural gas pipeline networks. The vortex heater comprises a heater body. A gas inlet cavity, a heating cavity and a heatexchange cavity are formed in the heater body. The gas inlet cavity communicates with the heating cavity. Gas inlets are formed in the gas inlet cavity and provided with nozzles. The nozzles inject gas entering from the gas inlets into the gas inlet cavity in the tangential direction of the inner wall of the gas inlet cavity. The heat exchange cavity is formed between an outer shell of the heaterbody and the heating cavity. A heat exchange gas inlet and a heat exchange gas outlet are formed in the outer shell of the heater body. Heat exchange pieces are arranged on the outer wall of the heating cavity. According to the vortex heater, heat generated by high-pressure gas of an inlet of a gas pipeline network is utilized for heating; mounting is simple; energy consumption is small; an outerheating source is not needed; and the heater is simple in manufacturing and low in manufacturing cost.

The invention discloses a rain shower combination comprising two water outlets. The shower combination comprises a water pipe, a switch part, the two water outlets and a containing cavity, wherein theswitch part is arranged on the water pipe, the two water outlets are distributed in different places of the water pipe, the two water outlets are respectively a first shower nozzle and a second shower nozzle, the first shower nozzle is arranged at the top of the water pipe, the second shower nozzle is connected with the water pipe through a hose and hung on a shower nozzle fixing device, the containing cavity is located between the top of the first shower nozzle and the water pipe, a metal frame is arranged in the containing cavity, natural mineral balls are embedded in the metal frame, and water quality can be improved.

The invention aims to provide a floating type tooth-shaped fiber reinforced plastic (FRP) buffering energy-absorption anti-collision device. The floating type tooth-shaped FRP buffering energy-absorption anti-collision device comprises a unit body and rubber rings. The unit body comprises an anti-collision unit I and an anti-collision unit II. The anti-collision unit I comprises an anti-collision shell I. A dense hole structure A and a dense hole structure B are arranged in the anti-collision shell I. The inner side of the anti-collision shell I is of a tooth-shaped structure. The anti-collision unit II comprises an anti-collision shell II. The middle portion of the anti-collision shell II is provided with a hollow structure. The hollow structure is filled with sandy soil or rubber particles or foam. A groove structure matched with the tooth-shaped structure of the anti-collision unit I is arranged on the outer side of the anti-collision unit II. The anti-collision unit I and the anti-collision unit II are connected into a whole through a damper and a connecting rod. The anti-collision unit I and the anti-collision unit II are wrapped with skin. The unit body and a protected unit are connected through the rubber rings. The floating type tooth-shaped FRP buffering energy-absorption anti-collision device has a multiple energy-absorption effect, the ship collision time can be effectively prolonged, and collision force is reduced.

The invention discloses a liquid-gas coexistence type buffering device. The liquid-gas coexistence type buffering device comprises an outer cylinder (1) and an inner cylinder (2). An outer cylinder inner cavity (11) used for containing buffering liquid and gas and mounting the inner cylinder (2) is formed in the outer cylinder (1). One or more outer cylinder flow limiting plates (12) are mounted on the outer cylinder (1) and located in the outer cylinder inner cavity (11). The outer cylinder inner cavity (11) is divided into a plurality of buffering chambers by the outer cylinder flow limiting plates (12). When the liquid-gas coexistence type buffering device is in use, at least one buffering chamber is filled with gas, and channels for liquid or / and gas circulation are formed in the outer cylinder flow limiting plates (12). One end of the inner cylinder (2) is movably mounted in the outer cylinder inner cavity (11) of the outer cylinder (1) in a sleeved mode. The inner cylinder (2) can move in the outer cylinder inner cavity (11) of the outer cylinder (1) in the axial direction. The liquid-gas coexistence type buffering device is wide in application range and flexible in use and can evenly distribute collision stress when collision occurs, prolong the interaction time during collision and achieve an excellent buffering effect.

In the present invention, a fall impact mitigating device that mitigates the impact of falling chip components (C) is provided with a wire aggregate (10) formed by the accumulation of a plurality of wire jigs (11). The wire jigs (11) have a plurality of wires (13) that are disposed in parallel and set apart at intervals through which the chip components (C) can pass. The wire jigs (11) are obtained by processing a base material of a certain thickness to integrally form a pair of frames (12) and the plurality of wires (13) extending in parallel between the frames. When the chip components (C) are made to fall on top of the wire aggregate (10), the chip components (C) collide with the wires (13) of any of the wire jigs (11), and the collision with the wires causes the force of impact to be mitigated. The chip components easily pass through the spaces between wires, thereby reducing the frequency of collisions with subsequent chip components and preventing the chip components from cracking or chipping.

A dropping impact mitigation device that mitigates the dropping impact of a falling object (C), having a plurality of filters (10-18) having provided stretched in parallel therein a plurality of wires (10b-18b) having intervals therebetween through which an object can pass, said filters being combined in the vertical direction in layers such that the filter wire positions differ vertically. When an object is dropped on to the filters, the object collides with one of the filter wires, the impact force is lessened by the deformation of the wire, and the object can readily pass between the wires, therefore the frequency with which said object collides with subsequent objects can be lowered, and breakages or fragmenting of the objects can be prevented.

The collision load-releasing safety device is a safety protection one used when the collision takes place by high-speed vehicle (automobile, ship and train), which comprises a cylinder with piston and filled with liquid, the bottom portion of the cylinder is equipped with several small conical holes on the periphery of which the non-return valve is mounted, the top end of the piston rod is equipped with spring, and the other end of the spring is equipped with force-bearing plate. When the collision takes place, the spring can be compressed to absorb partial kinetic energy which can be converted into elastic energy to make the liquid jetted out to convert a part of kinetic energy into friction heat energy and released partial energy.

The invention relates to the field of ships, in particular to a cylinder gas release collision buffer safe ship. A chute is sleeved at the upper end of a buffer sliding block and is longer than the upper end of the buffer sliding block; the rear surface of the buffer sliding block is tightly attached to the front end of a sliding rod; the front section of the sliding rod is arranged outside a cylinder barrel, and the rear section of the sliding rod is inserted into the cylinder barrel; a piston is arranged at the rear end of the sliding rod and can seal gas in a cylinder; a spring is arranged behind the piston; the rear end of the cylinder barrel is provided with a gas hole; if the ship runs against a rock, the buffer sliding block is impacted first, the buffer sliding block, the sliding rod and the piston move rearwards simultaneously, the spring is compressed, the gas in the cylinder is discharged from the gas hole, the buffer sliding block is subjected to high resistance when moving rearwards because the gas hole is small, the ship speed is reduced, time for the ship to run against the rock is greatly prolonged, and impact force applied to the ship is greatly reduced to protect a ship body according to the theorem of impulse; and if a ship without the buffer device runs against the rock, the impact force applied to the ship is high, the ship body can be broken, water can enter a ship bottom bin and the ship can be sunken.

A dropping impact mitigation device that mitigates the dropping impact of a falling object (C), having a plurality of filters (10-18) having provided stretched in parallel therein a plurality of wires (10b-18b) having intervals therebetween through which an object can pass, said filters being combined in the vertical direction in layers such that the filter wire positions differ vertically. When an object is dropped on to the filters, the object collides with one of the filter wires, the impact force is lessened by the deformation of the wire, and the object can readily pass between the wires, therefore the frequency with which said object collides with subsequent objects can be lowered, and breakages or fragmenting of the objects can be prevented.

The invention discloses a turnover anti-collision device and a dump truck. The turnover anti-collision device comprises a mounting bracket, an anti-collision buffer cushion, a turnover mechanism, a telescopic mechanism and a buffer cushion block, the installation support is installed on a vehicle box door and connected with the anti-collision buffering cushion through the turnover mechanism, and the turnover mechanism is used for controlling the anti-collision buffering cushion to topple over or retract. The installation support is connected with the buffering cushion block through a telescopic mechanism, and the telescopic mechanism is used for adjusting the extending length of the buffering cushion block so that the buffering cushion block can be tightly attached to a vehicle chassis rear beam. The device is simple in structure, convenient to install and use and high in safety.

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 discloses an automobile collision bumper, and relates to the technical field of automobiles. The automobile collision bumper comprises a hydraulic buffer mechanism fixed to the front end and / or the rear end of an automobile chassis, wherein the hydraulic buffer mechanism comprises at least three crush buffer units which are connected in series in an end-to-end mode, each crush buffer unit comprises a sleeve, each sleeve is provided with a crush rod with a pointed end in a sliding seal mode, a blocking sheet is fixed to the outer side of the pointed end of each crush rod in a sealing mode and is arranged on the inner wall of the corresponding sleeve, a liquid chamber filled with liquid is arranged between each blocking sheet and the corresponding crush rod and is arranged in the corresponding sleeve, and a drainage hole is formed in the portion, on the outer side of the corresponding liquid chamber, of each sleeve. The automobile collision bumper has the advantages that when the automobile collision bumper is installed on an automobile, due to the facts that the multiple levels of crush buffer units which are connected end to end are used, the blocking sheets are crushed step by step, and liquid is ejected out at a high speed, kinetic energy in the collision process of the automobile is converted, the collision time of the automobile can be prolonged, impact force is reduced, kinetic energy generated in the collision process can be absorbed, and the purpose that a human body and an automobile body are protected against damage at the same time is achieved.

The invention relates to a rotary guiding composite material bumper, and belongs to the technical field of building protection. The rotary guiding composite material bumper comprises bumper single body structures, a support and a platform, wherein the circular platform is connected with the periphery of a pile body in a surrounding mode, the support is connected with the periphery of the platform,and the multiple bumper single body structures are connected through the support and arranged on the periphery of the support; and each bumper single body structure is a barrel-shaped structure withwings, wherein the barrel-shaped structure with the wings is connected with the platform through the support, and each bumper single body structure is composed of an inner shell, an outer shell, extending wings and energy absorption filler. The rotary guiding composite material bumper has the advantages of being good in energy consumption performance, resistant to corrosion, low in weight, easy toreplace and particularly suitable for being applied to protection engineering of offshore structures.