47results about How to "Increase buffer stroke" patented technology

The invention provides an external electric folding soft landing mechanism. The external electric folding soft landing mechanism comprises at least three groups of the same supporting mechanisms arranged on a vehicle body, each of the supporting mechanism groups comprises a damping post and a landing leg, wherein the damping post comprises an electric transmission mechanism and a hydraulic damping device; the electric transmission mechanism comprises a motor, a bearing, a lead screw and a plurality of stage transmission sleeves which are sequentially nested; the hydraulic damping device comprises a spiral fastening device, a piston rod, a piston head, a buffer outer cylinder and a sealing device. The landing mechanism disclosed by the invention is suitable for repeated use in perpendicular ascending and descending, and is stuck to the outer surface of the vehicle under a folding state, so that the aerodynamic influence on the vehicle is reduced, and the folding rigidity is good; when the landing mechanism disclosed by the invention is under an unfolding state, the supporting area is large, and the bearing capacity is strong; the landing mechanism disclosed by the invention has the characteristics of light in weight, simple in preparation technology, smooth in buffering process, free from rebounding during processes, and high in buffering efficiency, and can be repeatedly utilized; a protrusion structure of a mechanism casing can also achieve the effect that a rocket empennage is aerodynamically stabilized.

The invention relates to a rubber buffering and vibration isolating elastomer structure which comprises an upper metal part, a rubber part and a lower metal part. An internal cavity structure is adopted by the rubber body of the invention to increase the buffering stroke of the rubber body, and the buffering deformation of the rubber body can reach 100%; and if the space along the axial direction of the elastomer structure is large enough, the buffering deformation can reach about 150%. The design of the cavity structure greatly increases the buffering deformation stroke of the rubber part by 2-4 times of the traditional rubber isolator, thereby greatly improving the buffering effect. The structure of the invention adopts the design of a gas channel; on the one hand, by the design of the gas channel, when the elastomer bears the impact load, because the action time of the load is short, the gas in the cavity is quickly discharged outwards through the gas channel, and the friction action of the gas and the channel increases the damping of the elastomer structure, thereby increasing the buffering effect of the elastomer structure; and on the other hand, by the design of the gas channel, the gas in the cavity can be smoothly discharged under the action of the load to avoid the uneven deformation of the rubber part caused by sealing of the cavity, thereby ensuring the rigidity stability of the elastomer structure in the deformation process.

The invention discloses an anti-collision buffering device special for a light-weight automobile. For the light-weight automobile with light weight, the anti-collision buffering device special for thelight-weight automobile can ensure that the impact force of a collision is reduced when a dangerous accident occurs. The anti-collision buffering device special for the light-weight automobile is provided with multi-layer shock-absorbing buffering assemblies, and the buffering effect is improved. When the impact is received, an axial force sensor can sense the impact situation and judge whether asecondary shock-absorbing buffering assembly needs to be started according to the detection value. When the impact force of an outer slide plate on an axial force sensor mounting seat is greater thana certain value, the axial force sensor mounting seat breaks away from a blind hole arm of the mounting seat, the secondary shock-absorbing buffering assembly moves, and a limiting seat, used for limiting the outer slide plate, on the mounting seat can break off under the impact of the outer slide plate, so that the secondary shock-absorbing buffering assembly can eject the outer slide plate to increase the buffering stroke, and the anti-collision buffering effect is improved. The anti-collision buffering device special for the light-weight automobile is very suitable for a safety anti-collision structure of the lightweight automobile, and particularly has a better anti-collision effect on a high-grade automobile.

The invention provides a single-piston-rod double-cylinder-barrel hydro-pneumatic spring. Equivalently, two hydro-pneumatic spring cylinder bodies share a piston rod. Two independent cylinder barrels are arranged at the two ends respectively and each assembled into an independent hydro-pneumatic spring cylinder body. The hydro-pneumatic spring cylinder body at one end is inflated with high-pressure nitrogen, and the hydro-pneumatic spring cylinder body at the other end is inflated with low-pressure nitrogen. Equivalently, two springs unequal in rigidity are overlapped, when the load is low, the hydro-pneumatic spring cylinder body (at the low air pressure end) inflated with the low-pressure nitrogen works, and after the load reaches a certain value, the two hydro-pneumatic spring cylinder bodies are connected in series to work together, the requirement for the large-range change of the effective rigidity is met, and the appropriate buffering stroke is achieved at the no load and the full load.

The invention discloses a double-resistance type expressway protection buffer device which comprises a stand column, a connecting arm, a sliding sleeve, a spring and a guardrail, and the sliding sleeve comprises a first sliding sleeve body and a second sliding sleeve body. The stand columns are vertically installed in the middle of an isolation belt of an expressway or on the two sides of the expressway. A clamping ring, a first sliding sleeve, a second sliding sleeve and a blocking piece are sequentially arranged on the stand column from bottom to top, the clamping ring and the blocking pieceare fixedly connected with the stand column, and the first sliding sleeve and the second sliding sleeve are connected in a relative sliding mode in the axial direction of the stand column. A spring is arranged between the clamping ring and the first sliding sleeve, and the two ends of the spring are connected with the clamping ring and the first sliding sleeve; a spring is arranged between the second sliding sleeve and the blocking piece, and the two ends of the spring are connected with the second sliding sleeve and the blocking piece. By means of the structural design, the buffering distance of a vehicle when the vehicle collides with the guardrails is increased, the guardrails shrink to drive the opposite guardrails to get close to the middle portion, the breaking strength is improvedthrough superposition of the two layers of guardrails, and a great positive effect is achieved for reducing the accident level.

The invention discloses a rocker arm type unmanned aerial vehicle ski buffering device. The rocker arm type unmanned aerial vehicle ski buffering device is composed an upper vehicle body connector, adamper, a ski bar and a rocker arm, wherein the upper vehicle body connector is arranged under a vehicle body and connected with the upper end of the damper through a damper-vehicle body connecting pin; a ski bar front connector is arranged in front of the vehicle body and connected with the ski bar through a ski bar-vehicle body connecting pin; the lower end of the damper is connected with the rocker arm through a damper-rocker arm connecting pin. During parachute landing, when the ski bar touches down, a ski bar support arm module can rotate around the ski bar front connector and a rocker arm-vehicle body connector under the action of support reaction force of the ground; during rotation, the ski bar support module can compress the damper, which then absorbs the sinking kinetic energy ofthe vehicle body to achieve buffering and damping effects; the ski is in a rocker arm type structure to achieve a long buffer stroke and reduce recovery overloading, and by means of high sideslip andground fiction, can absorb more impact energy to effectively protect safety of the vehicle body and equipment.

The invention discloses a regression buffering structure which comprises a shell body mechanism, a sliding mechanism, a stirring piece, an elastic piece and a buffering mechanism. The sliding mechanism is arranged in the shell body mechanism in a sliding mode. The stirring piece is provided with a stirring part which abuts against the sliding mechanism in a separable mode in a clamping mode. The elastic piece is arranged in the shell body mechanism. The buffering mechanism is arranged in the shell body mechanism. The buffering mechanism comprises a hollow outer pipe, a first pushing rod and a second pushing rod. One end of the first pushing rod is arranged in the hollow outer pipe in a sliding-sleeved mode from a first end. One end of the second pushing rod is arranged in the hollow outer pipe in a sliding-sleeved mode from a second end. The buffering mechanism comprises the hollow outer pipe and the two pushing rods, compared with a commonly-used oil pressure damping device of a regression buffering device, a longer buffering stroke is provided so that the time of buffering damping effect can be prolonged, and then the effects of effective buffering improving and noise lowering can be achieved.

The invention relates to the related field of dampers, and discloses a damping device capable of automatically adjusting damping stroke according to vibration intensity. The damping device comprises a main box body, a primary damping cavity is arranged in the main box body, a damping column sliding cavity with an upward opening is arranged on the upper side of the primary damping cavity, a secondary damping cavity communicates with the lower side of the primary damping cavity, and the left side and the right side of the secondary damping cavity communicate with magnetic sliding plate cavities which are symmetrical left and right with the secondary damping cavity as the center. The elastic force borne by a damping column push plate can be automatically adjusted according to the pressure borne by a damping column and the downward moving speed of the damping column, and therefore when the pressure borne by the damping column is small, the enough long buffering stroke can be guaranteed; and accordingly it is guaranteed that the damping column can be sufficiently buffered; when the damping column bears large pressure, it can also be guaranteed that the downward moving distance of the damping column is not too large, and the situation that a primary damping spring is damaged due to too large deformation is avoided; and meanwhile, the sensitivity of damping stroke adjustment can be changed, and the device can meet the damping requirements in different operation environments.

A friction clutch type draft gear assembly (10) includes a housing (18) having an open front end (22) and a closed rear end forming a ledge (21) for enabling a longer buff and draft travel while fitting into a 24.625 inch draft gear pocket. A friction clutch mechanism (20) includes a pair of outer stationary plate members (12), a pair of movable plate members (38), a pair of inner stationary plate members (44) having an inner surface (48) which is tapered at an angle of approximately 4.5 DEG , a pair of wedge shoe members (54) having an upper surface (58) which is tapered relative to a longitudinal axis of the friction clutch mechanism (20), and a center wedge member (66) which includes a pair of correspondingly tapered surfaces (68). The tapered upper surface (58) of the pair of wedge shoe members (54) is tapered at an angle of approximately 49.0 DEG -50.0 DEG . The pair of tapered surfaces (68) of the center wedge (66) is tapered at an angle of about 49.5 DEG.

The invention provides a double-air chamber piston type energy accumulator for an oil gas suspension, and belongs to the technical field of oil gas suspensions. The double-air chamber piston type energy accumulator for the oil gas suspension comprises an upper cylinder body and a lower cylinder body, the inner cross sectional area of the upper cylinder body is not equal to the inner cross sectional area of the lower cylinder body, the lower end of the upper cylinder body and the upper end of the lower cylinder body are in sealed connection to enable the upper cylinder body and the lower cylinder body to communicate with each other, an upper floating piston is arranged in the upper cylinder body, a lower floating piston is arranged in the lower cylinder body, a limiting block is arranged atthe position, between the upper floating piston and the lower floating piston, of the upper cylinder body or the lower cylinder body, an up-and-down through oil hole is formed in the middle portion of the limiting block, an oil nozzle is connected to the position, between the upper floating piston and the lower floating piston, of the upper cylinder body or the lower cylinder body, the upper cylinder body is connected with an upper gas injecting nozzle through an air way, and the lower cylinder body is connected to a lower as injecting nozzle through an air way. The double-air chamber pistontype energy accumulator has the beneficial effects that the effective working areas of two air chambers are different, the damping thrusts of the two air chambers are different, buffer damping provided by the oil gas suspension can be guaranteed, and meanwhile, the requirement of a vehicle during non-load or full-load states is met.

The invention relates to a furniture hinge (4) comprising a hinge arm (6) having a longitudinal axis (X), a hinge cup (5) that is connected to the hinge arm (6) and is mounted such as to be pivotable relative to the hinge arm (6) between a closed position and an open position, and further comprising a linear damper (7) having a linear damping stroke (Y) for damping a movement of the furniture hinge (4), wherein the linear damper (7) is arranged at the hinge cup (5) and, jointly therewith, can be arranged within a bore of a furniture item (3) in the installed position, wherein in the open position of the furniture hinge (4) in a plan view, the direction of the linear damping stroke (Y) of the linear damper (7) runs at an acute angle (alpha) relative to the longitudinal axis (X) of the hinge arm (6), the acute angle (alpha) being between 3° and 20°.

The invention provides a vibration reduction block for a vacuum pump and a vacuum pump assembly. The vacuum pump comprises a mounting lug, the mounting lug comprises a mounting lug body and a mounting lug end part, the vibration reduction block comprises a vibration reduction block body, a mounting hole corresponding to the mounting lug body is formed in the vibration reduction block body, the mounting lug body is mounted in the mounting hole, and an extension part is arranged on the vibration reduction block body. The extension part is formed by extending in the radial direction from the end, away from the vacuum pump, of the vibration reduction block body. By optimizing the structure of the vibration reduction block, the vacuum pump body is in full contact with the vibration reduction block, the buffering stroke is increased, the impact force of the pump body on a fixing support is reduced, and the vacuum pump and the fixing support are fully protected. Meanwhile, the vacuum pump assembly using the vibration reduction block has excellent anti-vibration performance, the normal function of a brake module can be ensured in the running process of the vehicle, and the noise of the vehicle is reduced.

A suspension type elevator buffer is provided with a car, wherein the car is square; a buffer body is arranged on the bottom of the car; and a base of the buffer body is connected with the plane of the bottom of the car through screws. When the car of an elevator drops due to stall and the buffer body is collided with the ground, vibration and impact force which are generated due to collision are transmitted to the car of the elevator after being reduced by the buffer body. The suspension type elevator buffer is simple in structure. By using the suspension type elevator buffer, modification of old elevators and arrangement of new elevators are facilitated.

The invention provides an energy absorbing and rebounding disengagement preventing door stop, and belongs to the technical field of door stops. The technical problem that an existing door stop structure is probably subjected to rebounding disengagement when impact force of a door body is large is solved. The energy absorbing and rebounding disengagement preventing door stop comprises a seat body and a collision head. A travel cavity is formed in the seat body, the inner end of the collision head slidingly cooperates in the travel cavity, the travel cavity communicates with the exterior, a damping part is arranged between the inner end of the collision head and the seat body, the periphery of the collision head is sleeved with a sealing ring, when the collision head slides towards the exterior of the seat body, the sealing ring abuts against the portion between the collision head and the inner side wall of the travel cavity in a sealing manner, when the collision head slides towards theinterior of the seat body, an air pass channel can be formed between the sealing ring and the collision head or the inner side wall of the travel cavity, and cavities, on the two sides of the sealingring, of the travel cavity communicate with each other. According to the energy absorbing and rebounding disengagement preventing door stop, the door body can be effectively prevented from being subjected to rebounding disengagement.