44results about How to "Stable cushioning" patented technology

The invention relates to a buffering landing leg of a reusable launch vehicle and a buffering method of the buffering landing leg, and belongs to the technical field of landing legs. The buffering landing leg comprises an outer sleeve (5), an inner lining cylinder (3), a concave type cylinder (7), a rotating motor (1), a pushing rod (4), a floating piston (8), a piston cylinder (12), a gasket (10), a honeycomb-like buffering material (11), a spherical hinge (13), a foot pad (14) and an end cover (9). The buffering landing leg is characterized by combining three buffering modes which are the oil buffering mode, the damping rubber buffering mode and the honeycomb-like buffering mode, and multi-level buffering can be conducted. The buffering landing leg can adapt to different initial landing situations and can be retracted and released automatically, and manual ground operation is not needed.

The invention relates to a door hinge with a buffering function. The door hinge is characterized by comprising a shell, a first rotary shaft, a second rotary shaft, a U-shaped rotary shaft, a hinge cup, a linkage part, a torsional spring, a connection part and a damper; the inner wall of the shell is provided with a locating block; the locating block and the shell are matched with each other to form two sliding grooves; the linkage part is provided with a push structure, is arranged in the shell through the first rotary shaft and is connected with the hinge cup through one shaft body of the U-shaped rotary shaft; the connection part is arranged in the shell through the second rotary shaft and is connected with the hinge cup through the other shaft body of the U-shaped rotary shaft; the second rotary shaft is sleeved with the torsional spring; the two ends of the torsional spring are arranged on the U-shaped rotary shaft and the first rotary shaft correspondingly; the damper is provided with an inverted-L-shaped locating sliding block and a stop block; the inverted-L-shaped locating sliding block comprises a transverse sliding block body and a longitudinal locating block body; the transverse sliding block body is inserted in the sliding grooves; the longitudinal locating block body can abuts against the locating block body; and the push structure can push the stop block. The door hinge has the advantages of being compact in structure, convenient to assemble, stable in buffering force, long in service life and convenient to maintain.

A hydraulic control system, comprising: an oil tank, an oil pump, a filter, a relief valve, a first solenoid valve, a second solenoid valve, a third solenoid valve, a fourth solenoid valve, a check valve, a first hydraulic cylinder, a second solenoid valve The hydraulic cylinder and the third hydraulic cylinder; the oil tank, the filter, the oil pump and the one-way valve are connected in sequence to form an oil delivery circuit; the downstream of the one-way valve is provided with a first oil circuit and a second oil circuit, and the first oil circuit is provided with a first electromagnetic The second oil circuit is provided with a second solenoid valve, the first oil circuit is connected to one end of the first to third hydraulic cylinders, the second oil circuit is connected to the other end of the first to third hydraulic cylinders; the first oil circuit is connected to the third hydraulic cylinder. The first oil return circuit, the second oil circuit is connected to the second oil return circuit.

The invention discloses a universal buffer for multi-freedom posture adjustment, and belongs to the field of configuration for buffer and posture adjustment for a used aircraft or other effective loads. The universal buffer mainly comprises a support structure consisting of a universal joint cross (6), a connecting frame (2), a lower support frame (1) and an upper support frame (2); the universalbuffer also comprises a bottom inclined energy buffer and inclined posture adjustment mechanism consisting of a brake disc arranged on the universal joint cross (6) and an inclined posture adjustmentgear; and the universal buffer also comprises a vertical energy buffer and vertical posture adjustment mechanism consisting of a cylindrical piston rod (9), a double-layer outer cylinder (11) and a corresponding coil in the middle of the universal buffer. The universal buffer overcomes the defects of the conventional buffer, and realizes controllability of a buffer process and adjustability of a buffer post posture.

The invention discloses a two-way sliding door centre adjustment buffer which comprises a shell mechanism, a buffer mechanism and a poking piece. The shell mechanism comprises a shell and a lower iron part, two grooves are formed in the shell and respectively provided with a bent bayonet, the buffer mechanism comprises a primary sliding body, two release claws, two pull rods, two secondary sliding bodies, two groups of buffer parts and two elastic parts, the two release claws are mounted on the primary sliding body, each release claw is provided with a release rod, the release rods are matched with the grooves, each secondary sliding body is respectively connected with one group of buffer parts and one elastic part, pull grooves are formed in the secondary sliding bodies, one end of each pull rod is connected with the primary sliding body, the other end of the pull rod is matched with the corresponding secondary sliding body, the poking piece is provided with a poking portion, and the poking portion and a poking space formed by the two release claws are separably clamped and abutted. The two-way sliding door centre adjustment buffer can achieve two-way centre adjustment buffer functions and is more stable in buffer performance, more ideal in buffer effect and low in noise.

The invention relates to a door hinge with a buffering function. The door hinge is characterized by comprising a shell, a first rotary shaft, a second rotary shaft, a U-shaped rotary shaft, a hinge cup, a linkage part, a torsional spring, a connection part, an installation cover plate and a damper; the top of the shell is provided with an installation hole; the linkage part is provided with a push structure; the left part of the linkage part is arranged in the shell through the first rotary shaft, and the right part of the linkage part is connected with the hinge cup through one shaft body of the U-shaped rotary shaft; the left part of the connection part is arranged in the shell through the second rotary shaft, and the right part of the connection part is connected with the hinge cup through the other shaft body of the U-shaped rotary shaft; the second rotary shaft is sleeved with the torsional spring; the two ends of the torsional spring are arranged on the U-shaped rotary shaft and the first rotary shaft correspondingly; the installation cover plate is embedded in the installation hole and is provided with a dovetail groove; the top of the damper is provided with an insertion-connection structure inserted in the dovetail groove; the damper is provided with a stop block; and the push structure can push the stop block. The door hinge has the advantages of being compact in structure, convenient to assemble, stable in buffering force, long in service life and convenient to maintain.

The present invention relates to the field of law enforcement equipment, specifically a high-sensitivity video and audio recorder for single police law enforcement with anti-drop function, including a recorder device and a wearing storage mechanism. The recorder device is located inside the wearing storage mechanism. The recorder device includes a recorder body and a handle, and the bottom of the recorder body is fixedly connected with the handle. By setting up the wearing storage mechanism and using the storage slot formed by the storage frame and the storage slot, the recorder device can be given a safe and effective storage space. By wrapping the recorder device for protection, people can wear the recorder device on the The front of the chest can be effectively protected, avoiding the damage of the recorder device caused by other objects or personnel touching the recorder device due to external emergencies, and achieving the advantage of safety protection for the recorder device.

A working method of a machining device, the machining device includes: a workbench, a bracket, a driving part, a work head, and a hydraulic system; wherein the bracket is arranged above the workbench, and the drive is suspended from the upper part of the bracket. part, the driving part drives the working head to process the workpiece; the hydraulic system includes: oil tank, oil pump, filter, overflow valve, first solenoid valve, second solenoid valve, third solenoid valve, fourth Electromagnetic valve, one-way valve, first hydraulic cylinder, second hydraulic cylinder, third hydraulic cylinder; the working method includes: clamping method and feeding method.

The invention discloses a parallel self-resetting high-efficiency buffer braking machine, which comprises a connecting rod and two completely identical buffer braking mechanisms. The two buffer braking mechanisms are arranged symmetrically, and one end is connected through a connecting rod. The buffer brake mechanism includes the brake outer cylinder, the brake inner cylinder, the brake inner cylinder end cover seal ring ring seal, the first friction plate, two limit bolts, several disc springs and two second friction plates, etc. . The first friction plate and the two second friction plates are bolted together to achieve efficient energy dissipation through metal yielding, frictional heat generation, and viscous damping. The retreating inner cylinder and the retreating outer cylinder are nested together and filled with liquid, and the liquid flow hole formed by the gap plays the effect of hydraulic braking during retreating. Belleville springs provide restoring force to the device through elastic deformation of the material. The invention can be used to buffer huge impact loads and realize self-resetting, and has the advantages of good parallelism, smooth buffering and re-entry, stable retreating force, light weight, high buffering performance and large energy consumption.

The invention provides a reusable collision and energy absorption device for a rail vehicle. The reusable collision and energy absorption device comprises an impacted rod, an outer pipe, a damping structure, a resetting structure and an end part base, wherein the damping structure comprises a damping plug, a guide pipe and a damping elastic element; the resetting structure comprises a resetting piston and a resetting elastic element; the outer pipe is of a tubular structure and the inner part of the outer pipe is separated into a front cavity and a rear cavity through a separation plate; the separation plate is provided with a damping hole with a through hole shape, so that damping fluid can circulate between the front cavity and the rear cavity; at least part of length of the damping plugis arranged in the damping hole when the damping plug is located at an initial position; the damping plug can move along a frontward-backward direction of the device when being impacted; a gap is formed between the radial thickest part of the damping plug and the damping hole and supplies the damping fluid to circulate between the front cavity and the rear cavity. The device provided by the invention has a good energy absorption effect and can be used for reducing injuries to passengers in secondary collision; the device can be repeatedly used so that the cost of the energy absorption devicecan be remarkably reduced.

The invention relates to a large-angle door hinge. The large-angle door hinge is characterized by comprising a main body, outer rocking and inner rocking arms, a first pin shaft to a ninth pin shaft, a damper, a connecting arm, a crank, a spring base, a spring, a swing arm and a hinge cup; the outer rocking arm is connected with the main body and the connecting arm through the first and second pin shafts; a positioning convex block is arranged on the outer rocking arm; a chute is formed in the connecting arm; a slide block and an arc recess are arranged on the damper; the slide block is arranged in the chute; a piston rod of the damper is arranged on the connecting arm; the positioning convex block is positioned in the arc recess; the crank is connected with the main body through the fourth pin shaft; the crank is connected with the connecting arm and the spring base through the third pin shaft; the spring is arranged in the spring base; the spring base is connected with the crank through the fifth pin shaft; the swing arm is connected with the crank and the inner rocking arm through the sixth pin shaft; the inner rocking arm is connected with the swing arm through the seventh pin shaft; the inner rocking arm is connected with the hinge cup through the ninth pin shaft; and the hinge cup is connected with the connecting arm through the eighty pin shaft. The large-angle door hinge has the advantages of compact structure, stable buffer force and high precision.

A machining device, comprising: a workbench, a first clamping hydraulic cylinder, a second clamping hydraulic cylinder, a support, a driving part, a working head, and a feed hydraulic cylinder; wherein the support is arranged above the workbench, The upper part of the support hangs the driving part, and the driving part drives the working head to process the workpiece. The left side of the workpiece is provided with a first clamping hydraulic cylinder, and the right side is provided with a second clamping hydraulic cylinder; The feed hydraulic cylinder controls the movement of the workpiece. The hydraulic cylinder includes a cylinder body, a drive rod, a piston, a guide column, an oil port, a flexible mechanism, and a connecting sleeve.