100results about How to "Increase buffer distance" patented technology

The present invention relates to a wave energy conversion and power generation system. Said invention is characterized by that it utilizes a flexible surface which can be flexibly bent and fluctuated with wave to receive drive of wave, and utilizes a rope whose one end is tied on the described flexible surface and another end is winded round a rotating wheel to pull said rotating wheel, so that said rotating wheel can be used for converting wave energy into mechanical energy, then utilizes a hydraulic system and a power generator unit to convert the mechanical energy into electric energy.

The invention provides a wave power generating system with a floating-body-based rope pulley, relating to a wave energy power generating system and comprising a wave energy collecting part, a power generator and a base, wherein the wave energy collecting part has the mechanism of: pushing a floating body by waves, tightening a rope, further driving a rotating wheel arranged on the floating body to apply work, and outputting mechanical energy to realize the collection of wave energy; and in a wave dropping step, reversely rotating the rotating wheel by using small force, withdrawing the rope, pulling and withdrawing in the way, and continuously circulating. The wave energy collecting part is used for supplying power to the power generator to generate power. The wave power generating system can adapt to most shapes of waves and has the advantages of strong wind and wave resistance, low cost and easy maintenance.

The invention relates to a wave energy generation system. In the invention, a float body is propelled by wave; a plunger pump piston is pulled by a rope one end of which is tied on the float body and the other end is tied on a plunger cylinder to convert irregular wave push power into hydraulic energy; and a hydraulic system outputs power to a generator for generation. In the wave-falling stage, differential pressure acted at both sides of the piston is adopted to reset the piston and withdraw the rope, thereby reducing the process cost and improving the response speed via multi-cylinder serial connection. The system is adapted to sea wave with various wave shapes, has strong wave-resistant ability and adopts two waterproof anti-corrosion methods with a drawtube type and a sleeve type.

The invention relates to a dual-rope type float body rope wheel sea wave power generation system, belonging to a wave energy generation system. In the invention, wave is pushed by a float body or an oscillating plate; one rope of which one end is tied thereon and the other end is wound on a rotating wheel to pull the rotating wheel to convert the obtained irregular wave push power into rotating power; during the wave fall-back period, another rope drives the rotating wheel to invert by the gravity of a heavy object to take back the rope; the rotating wheel realizes energy transmission and collection by a ratchet wheel mechanism and a hydraulic system so as to realize power generation via a generator. As for large-scale wave energy generation, the float body can form an array surface. The system can be adapted to waves with most waveforms, can efficiently absorb wave energy, has strong wind wave resistance and low cost and does not rely on shore-based operation.

The invention relates to a tool-crashing prevention system of a numerically controlled lathe. The tool-crashing prevention system comprises a tool rest and the lathe on which a workpiece is clamped well. A specular reflection photoelectric switch is arranged in the middle of the tool rest. A roughing tool used for cutting the workpiece is clamped on the tool rest. The cut workpiece is fixed to the lathe through a chuck. The lathe is provided with two reflecting plates in the X-axis direction and the Y-axis direction respectively. The tool rest is moved through a stepped motor. The specular reflection photoelectric switch on the tool rest detects the position of the tool rest through optical signals reflected by the reflecting plates on the X-axis of the lathe and the Y-axis of the lathe. The moving speed and the moving direction of the tool are further judged in the mode that a control system reads the high level or the low level of a pulse signal machine of the numerically controlled lathe, so that whether a tool-crashing accident happens to the tool is judged, and emergency braking is conducted before tool crashing. The tool-crashing prevention system can effectively protect the roughing tool against the tool-crashing accident and has the characteristics of being high in accuracy, reliable in detection, low in cost and the like.

The invention provides a left-right adjusting device for an automobile seat, and belongs to the technical field of automobiles. The problem that in the prior art, an automobile seat can not be moved transversely when side impact happens to an automobile is solved. The automobile seat comprises a left sliding rail and a right sliding rail which are parallel to each other, the left-right adjusting device for the automobile seat comprises a side impact sensor, transverse movement assemblies and a control unit, the transverse movement assemblies are arranged below the two ends of the left sliding rail and the two ends of the right sliding rail respectively and fixed to the bottom plate of the automobile, the side impact sensor is connected with the signal input end of the control unit, the transverse movement assemblies are connected with the signal output end of the control unit, and the control unit is further connected with a storage battery. The automobile seat can be moved transversely relative to an automobile body through the left-right adjusting device for the automobile seat when side impact happens to the automobile, so that the injury probability of passengers is reduced, and the riding safety in the automobile is greatly improved.

The invention belongs to the technical field of automobile accessories, and discloses a five-connecting rod hinge structure of an active pedestrian protection engine cover. The structure comprises a base seat, a first bracket, a second bracket, a hinge body, an engine cover connecting rod and a locking piece, wherein one end of the first bracket is hinged on the base seat, and the other end of thefirst bracket is hinged on the hinge body; one end of that second bracket is hinged on the base seat, and the other end of the second bracket is hinged on the hinge body; the first bracket, the second bracket and the hinge body form a four-rod mechanism; a first locking hole is formed in the hinge body; and the engine cover connecting rod is hinged on the hinge body, and the locking piece locks the engine cover connecting rod in the first locking hole. The five-connecting rod hinge structure of the active pedestrian protection engine cover has the advantages of stable structure and high safety.

The invention discloses an active protective device for preventing a bridge form the collision of a ship, and belongs to the technical field of roads and bridges. The active protective device consists of an alarm and control unit (18), a mechanical transmission system, a bottom plate, energy-absorbing blocks and a rubber buffer block (7), wherein the alarm and control unit (18) transmits a signal to a gas generator to inflate an inflatable gasbag (6) so as to float up the bottom plate as well as the mechanical transmission device and the energy-absorbing blocks on the bottom plate; the alarm and control unit (18) transmits a signal to a hydraulic motor (8) of the mechanical transmission device and a latch control device so as to enable the rubber buffer block (7) to move forward and change the energy-absorbing blocks arranged on the bottom plate from one row into three rows. The active protective device reduces the occupied space of a collision-preventing device in a navigable region, enhances a collision-preventing and energy-absorbing effect, and achieves the advantages of replaceable energy-absorbing block units and restorable deformation of the buffer block and the like.

The invention discloses a traction mechanism for cable processing. The traction mechanism comprises a winding roller used for winding a cable and a traction motor used for driving the winding roller to rotate, wherein one side of the input end of the winding roller is provided with a supporting table, a traction frame is fixedly mounted on the top of the supporting table, a guiding wheel and a tensioning mechanism which are used for tensioning the cable are mounted on the inner side of the traction frame, and one end of the tensioning mechanism is rotationally connected with the guiding wheel.The tensioning mechanism correspondingly comprises a third tensioning piece, a second tensioning piece, and a first tensioning piece, elastic force of the third tensioning piece, elastic force of thesecond tensioning piece and elastic force of the first tensioning piece are sequentially reduced in the conveying direction of the cable, when speed difference appears during cable winding, and the pulling condition of the cable is generated, the first tensioning piece which is closest to the winding roller and has the smallest elastic force firstly can contract, and then the second tensioning piece and the first tensioning piece can sequentially contract so as to increase the buffering distance of the cable, so that the reaction of the tensioning mechanism is more sensitive, and the tensionchange to the cable is relieved.

The invention provides a multifunctional mobile phone shell. The multifunctional mobile phone shell comprises a front cover, a sucking disc, a connection piece, a back cover, a suspension part and support parts, wherein the sucking disc is arranged on a middle lower part of a front side face of the front cover; a closure member is arranged on one side edge of the front cover; one side edge, which is opposite to a side where the closure member is positioned, of the front cover is rotationally connected with the connection piece; a revolving shaft is arranged on one side edge, which is opposite to a side where the front cover is positioned, of the connection piece; one side face, which is connected with the revolving shaft, of the back cover is provided with a through hole through which the front cover, the sucking disc and the connection piece are allowed to enter an inner side of the back cover through the side face; slide rails are arranged on two opposite side faces of the through hole; a front side face of the back cover is provided with grooves for accommodating the suspension part and the support parts; one end of the suspension part is fixedly connected with the back cover; the other end of the suspension part is movably connected with the back cover; the support parts are arranged around the suspension part; and one end, which is close to the suspension part, of each of the support parts is rotationally connected with the back cover. The dual-purpose mobile phone shell has a suspending function and a supporting function, can bring convenience to people, and facilitates popularization.

The invention provides a heavy anti-collision buffer vehicle. The heavy anti-collision buffer vehicle comprises a bearing truck, a lorry-mounted crane, an auxiliary frame assembly, a reversal drivingmechanism, a folding lamp holder assembly and a folding buffer block assembly, the lorry-mounted crane is arranged behind a cab of the bearing truck and on the auxiliary frame assembly of the front ofa carriage, the folding lamp holder assembly is arranged on the last side of the carriage of the bearing truck, the folding buffer block assembly is located on the rear side of the folding lamp holder assembly, and the lower end of the folding lamp holder assembly is arranged on the auxiliary frame assembly through a connecting base. According to the heavy anti-collision buffer vehicle, a first-stage buffer block assembly and a second-stage buffer block assembly are adopted for series side by side front and back, the buffer distance is long, and the anti-collision effect is good. Functions ofthe anti-collision buffer vehicle are increased by arranging the lorry-mounted crane, and lifting and hoisting operation can be carried out in traffic construction.

The invention belongs to an automobile safety protection device, in particular to an anti-collision beam buffering structure with a stiffness compensation function. The anti-collision beam buffering structure comprises an existing anti-collision beam and buffering devices connected with the existing collision beam through a first fastening buckle, a second fastening buckle, a third fastening buckle and a fourth fastening buckle. The buffering devices each comprise an upper connecting layer, a connecting layer with the buckles for connection, and a lower connecting layer sequentially from top to bottom. The connecting layers with the buckles are constituted by filling layers, and the number of the filling layers is determined by the size of an actual car type anti-collision beam. The connecting layers with the buckles comprise the filling layers with the corresponding number sequentially from top to bottom. The anti-collision beam buffering structure with the stiffness compensation function is simple in structure, convenient to mount, high in applicability and capable of effectively reducing collision impact force, and the problems that as for an existing safety protection structureon the front portion of a car, the anti-impact performance is poor, stiffness is inconsistent, and an anti-collision beam is prone to being damaged are solved.

The invention discloses an active extension type automobile front bumper. Three fixed sleeves are rigidly connected to the rear side wall of a cross beam of a U-shaped fixed frame, an impact rod is sleeved in the middle of the interior of each fixed sleeve in a spaced mode, and the front end of each impact rod penetrates through the cross beam of the U-shaped fixed frame and then is fixedly connected with a bumper body; the rear end of each impact rod is fixedly connected with a movable cross beam horizontally arranged left and right, a left longitudinal beam and a right longitudinal beam of the U-shaped fixed frame are each provided with a movable longitudinal beam capable of moving front and back, and the left end and the right end of each movable cross beam extend into the correspondingleft longitudinal beam and the corresponding right longitudinal beam of the U-shaped fixed frame respectively and are fixedly connected with the front end of the corresponding movable longitudinal beam. The rear end of each movable longitudinal beam is fixedly connected with a hydraulic mechanism. An energy absorption mechanism is arranged between every two adjacent fixed sleeves, the distance between the bumper body and an automobile body is changed through an active extension mechanism and the energy absorption mechanisms, and high-strength springs, the energy absorption mechanisms and thehydraulic mechanisms absorb energy generated during collision in a multi-stage energy absorption mode.

The invention discloses a combined type short-stroke buffer device. The combined type short-stroke buffer device comprises collision heads, disc springs, a spring, a piston rod, a shell, a back flow hole, a cylinder wall, a sponge layer, a piston, damping holes, a disc spring support and a base, wherein the disc springs are arranged on the collision heads and are fixedly connected with the base through the disc spring support. According to the combined type short-stroke buffer device disclosed by the invention, the collision heads are quickly collided by a buffered object, the piston rod is pushed to move, oil liquid in a high pressure cavity is compressed by the piston and is discharged through the damping holes, the temperature of the oil liquid can be increased by a damping action so as to convert kinetic energy of the buffered object into thermal energy, the speed of the piston rod can be reduced, meanwhile, a part of energy is stored in the disc springs, the buffered object and a buffer motion part do return motion under the action of disc spring forces after the energy stored in the disc spring reaches a maximum value, the oil liquid reversely flows through the damping holes and the back flow hole of a hydraulic buffer, the energy is continuously consumed, and the situation of buffering larger energy in a short stroke is realized; the combined type short-stroke buffer device is suitable for an occasion which is in need of buffering larger energy in the short stroke; the buffering is smooth; the structure is simple, and the installation is easy.

The invention discloses an anti-collision assembly type steel bridge which comprises a pedal device, guardrail devices and supporting columns, the guardrail devices are fixed to the two corresponding sides of the top of the pedal device, a sliding plate is connected into a pedal body in a sliding mode, and a reset spring is fixed between the end of the sliding plate and the two corresponding sides of the interior of the pedal body. And the top end of the right-angle connecting rod is fixedly connected with one side of the surface of the guardrail device, the friction device is arranged between the top of the sliding plate and the two corresponding sides of the interior of the pedal body, and the friction device is close to the surface of the pedal body. The invention relates to the technical field of bridges. According to the anti-collision assembly type rigid bridge, the purposes of collision prevention and timely friction increase are achieved, buffering and impact force reduction are conducted in time, protection of the bridge and a vehicle is facilitated, the friction force is increased in time, the vehicle braking effect is improved, the situation that the vehicle rushes out of a guardrail is reduced, safety and reliability are achieved, potential safety hazards are reduced, and the using performance is improved.

The invention discloses an automotive shock resisting rubber damper. A first rubber block is arranged on the lower side of a top cover; a second rubber block is arranged on the lower side of the first rubber block; a first sliding block is arranged on the lower side of the second rubber block; a third rubber block is arranged on the lower side of the first sliding block; a movable block is fixedly connected with the lower end of a piston rod; a first semicircular ring is fixedly connected with each of upper and lower surfaces of the movable block; a fourth rubber block is arranged on the lower side of the movable block; a second sliding block is arranged on the lower side of the fourth rubber block; and a fifth rubber block is arranged on the lower side of the second sliding block. Compared the automotive shock resisting rubber damper, disclosed by the invention, with the prior art, the fourth rubber block and the fifth rubber block arranged to be hemispheric provide a dot-to-plane deformation manner to weaken the impact effect, and the arranged second sliding block can provide displacement to lengthen the buffer distance so as to resist impact.

The invention discloses a bridge rubber support which comprises a bottom plate, a top plate and a rubber block arranged between the bottom plate and the top plate, wherein the bottom plate and the top plate are both round steel plates; a plurality of circumferentially distributed mounting holes are formed in the edge of the upper side of the bottom plate; four arc-shaped blocks are arranged on the bottom plate, and are symmetrically arranged around the center of the bottom plate; concave surfaces of the arc-shaped blocks are arranged inwards; strengthening blocks are arranged on the outer side of the arc-shaped blocks; one side of each strengthening block is propped against a convex surface of the corresponding arc-shaped block; the lower ends of the strengthening blocks are fixedly connected with the bottom plate; a limit block is vertically arranged in the middle of the bottom plate; a limit hole corresponding to the limit block is formed in the middle of the bottom surface of the rubber block; four damping and buffering mechanisms are arranged among the rubber block and the arc-shaped blocks; the four arc-shaped blocks form a circular groove. The damping and buffering mechanisms are arranged among the rubber block and the arc-shaped blocks to be taken as a secondary buffering mechanism of the rubber support, so that the loading capacity of the rubber block is effectively improved.

The invention discloses a collision-proof highway isolation fence which comprises supporting frames and an isolation box. The supporting frames are arranged in a bilateral symmetrical mode, grooves are formed in the upper end and the lower end of supporting rods, sliding rails are arranged in the grooves, sliding blocks are arranged on the sliding rails, the isolation box is connected with the sliding blocks through connecting rods and comprises a housing, a noise reduction plate is arranged in the internal middle of the housing and is provided with noise reduction holes, noise absorption sponge is arranged on the left side and right side of the noise reduction plate, the noise reduction plate divides the housing into a left noise reduction chamber and a right noise reduction chamber, themiddle of the left noise reduction chamber and the middle of the right noise reduction chamber are provided with partition plates, the partition plates divide the left noise reduction chamber and theright noise reduction chamber into first noise reduction cavities and second noise reduction cavities, a plurality of noise reduction tubes are arranged in the second noise reduction cavities, a plurality of round holes are formed in the partition plates, damping devices are arranged at the front end and the rear end of each sliding block, and the outer ends of the damping devices are connected with the grooves. The collision-proof highway isolation fence is simple in structure, convenient to use, good in collision-proof effect, high in safety and strong in collision-proof performance.

The invention discloses an automobile buffer device and relates to the technical field of automobile safety. It includes a base plate, the surface of the base plate is fixedly connected with a first hydraulic rod, and one end of the first hydraulic rod is fixedly connected with an anti-shock plate, the top of the base plate is fixedly connected with a shock absorber, and the top of the shock absorber is fixedly connected with a Buffer box, a buffer device is fixedly connected between one side of the bottom of the buffer box and the base plate, one side of the buffer box is slidingly connected with a buffer plate, and one side of the buffer plate is fixedly connected with the impact plate, and the outer wall of the buffer box is fixedly connected There is a second hydraulic lever. The car buffer device is equipped with a controllable buffer device and has strong anti-shock performance. When the car is running, it can control the protruding buffer distance of the bumper according to the speed. After a collision, because it has a longer buffer distance, it can It has a stronger buffering effect and can well protect the safety of the car and the driver.

The invention relates to the technical field of non-woven fabric membrane materials and spinning and papermaking membrane materials, in particular to a constant-tension dancing roller control device. The constant-tension dancing roller control device comprises a supporting assembly and an adjusting assembly, the adjusting assembly is arranged on the supporting assembly and comprises a balance arm assembly, a lifting assembly and an angle sensor, the balance arm assembly is rotationally connected with the supporting assembly, and the angle sensor is used for obtaining rotation information of the balance arm assembly and controlling the lifting assembly to drive the balance arm assembly to move in the vertical direction, so that the balance arm assembly is located at the balance position. The film material is wound on a guide roller, the tension of the film material is determined according to the set tension of an air cylinder, and the change of the tension is shown on the rotating angle of the balance arm assembly, so that the balance arm assembly is conveniently controlled to ascend and descend through the lifting assembly, the constant tension of the film material is achieved, the movement range of the tension dancing roller is large, and the adjusting distance is long; and the device is particularly suitable for a high-speed film material production line, and the practicability and the tension control efficiency are improved.

The invention discloses an automobile front bumper for a pilotless automobile. The automobile front bumper comprises a cross beam, both ends of the cross beam are fixedly connected with a connecting plate, two identical connecting rods are arranged on the upper side and the lower side of the cross beam, a connecting base is arranged on the inner side of the connecting plate, a screw hole is formed in the inner side of the connecting base, the connecting rod is in threaded connection with the connecting base through a stud arranged at one end of the connecting rod, a first spring is fixedly connected between the two connecting rods, and a buffer component is arranged on the outer side of the cross beam. The automobile front bumper plays an excellent effect of buffering, a polymerized plastic plate slides relatively in a sliding chute through a sliding block, the buffer distance between automobile bodies is increased, the deformation of the bumper is much severer, so that the collision energy is conveniently absorbed and dissipated, the energy produced in the collision of the automobile bodies is absorbed effectively, damages on the automobile bodies and passengers in the automobile are reduced, and the automobile front bumper is safer to use.

The magnesium alloy front end frame assembly facilitating pedestrian protection comprises a frame body and a leg protection cross beam, the frame body is an integrally-formed magnesium alloy die casting, and the left end side and the right end side of the leg protection cross beam are connected with the front end of an energy absorption box. First mounting plates are integrally formed on the left side and the right side of the frame body respectively, and the rear ends of the energy absorption boxes are connected with the front sides of the first mounting plates of the frame body. Pedestrian protection performance in the collision process can be effectively improved, and the requirement for light weight of a vehicle body is met.

A combined shock absorbing bracket for elevator the invention relates to the technical field of elevator safety shock absorbing equipment, wherein the bracket is fixedly arranged on the lower side wall of the car, the lower end of the bracket is fixedly provided with a limited position plate, A guide sleeve is fixedly arranged on the bracket, a guide rod is movably inserted into the guide sleeve,the guide rod is arranged on a limiting plate, the lower end of the guide rod is fixedly provided with a supporting foot, a slide rail is fixedly arranged on the bracket, a sliding block is fixedly arranged on the slide rail, a damper is fixedly arranged on the sliding block, and an output shaft of the damper is fixedly arranged on the upper end of the guide rod; The damper is used for damping, which lengthens the cushioning distance and reduces the cushioning acceleration, and makes the car more comfortable when landing. The damper can adjust the initial position and is suitable for elevatorshafts with different depths.

The invention relates to an elastic buffering and plastic overturning parallel type energy absorption assembly which comprises a cylindrical thin-wall component and a compression spring and further comprises an overturning seat. The elastic buffering and plastic overturning parallel type energy absorption assembly is characterized in that the center of the compression spring and that of the cylindrical thin-wall component are arranged on a same straight line; the overturning seat comprises a seat body and a boss, the boss is integrally in circular arc connection with the seat body, one end of the cylindrical thin-wall component sleeves the boss, and the other end of the cylindrical thin-wall component is a free end; one end of the compression spring is fixedly connected with the boss, the other end of the compression spring is a stress end, and the stress end extends out of the free end of the cylindrical thin-wall component. The invention has the benefits: the structure is simple, buffering and energy absorption functions are achieved, and safety and protection property are improved. Compared with a plastic collapse buckling energy-absorption structure, the structure of the elastic buffering and plastic overturning parallel type energy absorption assembly has longer buffering distance and more stable energy absorption capacity.

The invention relates to an infant bidirectional basket type safety seat with an easy-unlocking lock machine. The infant bidirectional basket type safety seat comprises a base assembly and a basket assembly. The basket assembly comprises a left side plate and a right side plate which are fixedly connected through a fixing shaft. A seat plate is installed between the left side plate and the right side plate. The head and the tail of the seat plate are connected with an upper sliding shaft and a lower sliding shaft correspondingly in a penetrating mode. The upper sliding shaft and the lower sliding shaft are connected with kidney-shaped grooves in the left side plate and the right side plate correspondingly in a penetrating mode. The two ends of the upper sliding shaft and the lower sliding shaft are each connected with a spring rocker mechanism. The base assembly comprises a base pipe frame assembly and an energy absorption assembly. Various impact conditions are considered, bidirectional buffering are conducted, through buffering energy absorption of a spring, buffering distance is increased, the impact peak value of impact is reduced, thus children can be protected overall and effectively, and injury is reduced.

The invention relates to the technical scheme of a basket type child safety seat. Spring dampers are additionally arranged in components such as a base, a backrest and a headrest of the child safety seat, so that buffering and energy absorption in the collision process are facilitated, and harm to a child body due to collisions is reduced. Meanwhile, unlocking of a basket, rotational limitation of a lifting handle, pedals and a safety belt assembly of the seat are optimized, so that practicality is provided; and an anti-splashing assembly is additionally arranged, so that a child is prevented from being harmed by a splashed object.

The invention relates to the technical field, in particular to a civil aviation passenger information electronic tag. The civil aviation passenger information electronic tag includes an electronic taghousing, a reading port is formed in one side of the electronic tag shell; a reading strip is arranged in the reading port; wherein the electronic tag shell comprises an innermost mounting layer; a waterproof layer is arranged on the outer surface of the mounting layer; a heat-insulating layer is arranged on the outer surface of the waterproof layer; a flame-retardant layer is mounted on the outer surface of the heat insulation layer; the outer surface of the flame-retardant layer is coated with a supporting layer; the outer surface of the supporting layer is coated with a rubber layer; the heat-insulating layer and the flame-retardant layer are used for improving the high-temperature resistance of the electronic tag and preventing combustion at the same time; the waterproof layer and therubber buffer layer are adopted; the electronic tag is improved; according to the electronic tag, the waterproof capability and the anti-breaking capability are achieved, meanwhile, the buffering balls are arranged at the four corners of the rubber buffering layer, the buffering distance is increased, the buffering capability is improved, meanwhile, the sunken reading opening and the built-in reading strip are used, the sealing performance of the electronic tag is improved, the waterproof capability is improved, the camera is installed on the electronic shell, and the ticket checking speed isincreased.

Disclosed is a portable emergency evacuation tool in a motor vehicle. The portable emergency evacuation tool is high in starting speed, high in window breaking success rate, small in size, convenient to carry and safe and stable. The portable emergency evacuation tool is formed by a ball handle, a cylinder cover, a safety pin, a screw, a screw spike, a cylinder, a pressure spring, a spring support and a rivet and is characterized in that the ball handle is connected with the upper end of the screw through threads; the screw penetrates the cylinder cover and the pressure spring; the cylinder cover and the cylinder are fixed through the screw spike; the lower end of the screw and the spring support are fixed; the river is embedded at the bottom of the screw; the bottom of the cylinder is provided with a circular hole; a nail point of the rivet extends out of the circular hole; the safety pin penetrates the cylinder cover and the screw.

The invention discloses a ship buffering docking and unpowered sailing-off device which comprises an air bag, a spring, a spring inner rod, an inner rod sleeve, a clamp spring, a clamping groove, a transmission rod and power equipment. The air bag is arranged at one end of the spring inner rod, and the other end of the spring inner rod stretches into the inner rod sleeve. The clamp spring is arranged on the lower side of the middle of the spring inner rod. The bottom of the inner rod sleeve is provided with a notch matched with the clamping groove in size. The spring is arranged between the inner rod sleeve and the air bag. The power equipment is connected with the clamping groove through the transmission rod. According to the ship buffering docking and unpowered sailing-off device, effective buffering when a ship docks can be achieved, buffering distance is increased, and the restriction for docking speed is relaxed; in addition, the kinetic energy of the ship is stored and converted into elastic potential energy, and the elastic potential energy is converted to the kinetic energy when the ship needs to sail off, so energy reuse is achieved, and the ship buffering docking and unpowered sailing-off device is safe, friendly to environment, reliable in use and good in buffering effect.