64results about How to "Act as a damper" patented technology

The invention relates to a hydraulic damper with excellent tightness, which is provided with a cylinder body (4), a piston (8), a piston rod (2), a guiding sleeve(3), a front rubber cup(5), an elastic element (6), a middle rubber cup (7)or a fixing ring(7), a blanking element(12), a washer (10)and a rear rubber cup (11), wherein the periphery of the guiding sleeve(3) is provided with a clamping block (3.1), the cylinder body (4) is provided with a bayonet (4.1) matched with the clamping block (3.1), the periphery of the blanking element(12) is provided with a clamping block (12.1), and a bayonet (4.3) is arranged on the cylinder body (4), and the cylinder wall of the hydraulic damper cylinder body (4) is provided with a liquid releasing groove (4.2); the piston (8) is arranged to be a transverse I-shaped contoured structure, and comprises two piston rings(8.1 and 8.3) in the front and at the back and a piston column (8.2) in the middle; the piston column in the middle is sleeved with a floating ring (9), wherein the front piston ring wall is provided with a damping hole (8.4); and the front rubber cup (5), the middle rubber cup (7) and the rear rubber cup (11) of the hydraulic damper are arranged to be internal and external double-lip structures. The hydraulic damper has simple assembling and firm connection among the guiding sleeve and the blanking element with the cylinder wall of the cylinder body, the piston rod can position accurately, and the damping effect and the tightness are good.

The invention discloses a dual-spring counter-force structure of a railway signal relay, which comprises a spring counter-force structure formed by a spring, a spring fixing cover (4), a square-head screw rod (5), a nut, and a keeper (1), and is characterized in that the spring is formed by an outer spring and an inner spring (6) with different stiffness arranged on the square-head screw rod; and at the beginning stage, the inner spring (6) provides a counter force, and in the case of movement to a certain displacement, the outer spring (3) and the inner spring (6) together provide the counter force. The defect that adjustability of counter-force features of a single-spring counter-force structure is not high can be solved, improvement of anti-vibration performance of the relay is facilitated, movement features of the keeper can be well ensured, and the dual-spring counter-force structure of railway signal relay has the advantages of reasonable and compact structure, good reliability and simplicity.

The invention discloses a multi-gear force adjusting lifting cabinet. The multi-gear force adjusting lifting cabinet comprises a cabinet shell and a cabinet basket arranged inside the cabinet shell. Multi-gear force adjusting lifting assemblies which are symmetric left and right are mounted on the inner side wall of the cabinet shell. Each multi-gear force adjusting lifting assembly is mainly composed of a rotating disk, a first fixed connecting rod, a second fixed connecting rod, a first supporting rod, a second supporting rod, a force adjusting device, an engagement and disengagement block,a first rotary lifting rod, a second rotary lifting rod and a fixing plate. The multi-gear force adjusting lifting cabinet is scientific and reasonable in structural design, the multi-gear force adjusting type lifting structure is adopted, multiple gears with different push-and-pull forces are provided to be used by users, and meanwhile the occupied space of the cabinet on a kitchen is effectivelyreduced.

The invention relates to a swing check valve. The swing check valve comprises a valve body, a valve bonnet, a valve seat, a rotary shaft, a rocking bar, a valve clack, a connection shaft, a bufferingassembly and an adjustment assembly. The valve body is internally provided with an inlet flow channel, an outlet flow channel and an inner cavity. The valve bonnet is fixedly connected to the valve body. One end of the connection shaft is fixedly connected with the rotary shaft, and a spiral groove is formed in the other end of the connection shaft. The buffering assembly comprises a buffering block, a buffering cover, a buffering piston, a damping rod and a one-way valve plate. According to the swing check valve, the valve clack can be opened rapidly and closed slowly; thus impact can be lowered, water hammers are prevented from being generated, and the valve is prevented from being destroyed; and besides, the length of the damping rod extending into a piston cavity is adjusted through the adjustment assembly so that the opening size of a throttling groove can be adjusted, and then the closing speed of the valve clack can be adjusted.

The invention discloses an aviation piston type engine driving torsional damper, which at least comprises a damper casing as an input component, a reducing gear as an output component and a fixed gear ring fixedly connected with the reducing gear, wherein the damping casing is connected with a crankshaft and commonly rotates along with the crankshaft; and at least two groups of elastic connecting keys are arranged between the damper casing and the fixed gear ring and are used for transmitting the toque to the reducing gear. By outputting the torque of the crankshaft by using two paths, the driving torsional damper has the functions of damping and increasing the damping, can reduce the torsional rigidity of a combined part of the crankshaft of the engine and a driving system and tunes the inherent frequency of torsional vibration of the driving system.

The invention discloses a gap eliminating device for a gear and rack steering and a damping and limiting method thereof. The device comprises a steering shell body, a gear and rack assembly and a supporting yoke, wherein the gear and rack assembly comprises a gear shaft rotationally supported on the steering shell body, a gear connected with the gear shaft and a rack engaged with the gear, a gap adjusting cavity is formed in the position, below the rack, of the steering gear shell body correspondingly, the supporting yoke is movably arranged in the gap adjusting cavity and abuts against the back surface of the rack, an adjusting screw plug is arranged at a lower opening of the gap adjusting cavity, a disc spring set is arranged between the adjusting screw plug and the supporting yoke, andthe disc spring set comprises at least two overlapped disc springs. According to the gap eliminating device for the gear and rack steering, the disc spring set is adopted as an elastic body, the discsprings can provide approximately consistent rigidity within a certain compression amount range through the arrangement mode that the two sets of disc springs are oppositely combined and connected inseries, and therefore the pressing force on the rack is kept unchanged basically after the gear and the rack are abraded, and the pressing effect and stability are improved.

The invention relates to a damping structure for reducing vibration of a transformer oil tank. The damping structure comprises two metal perforated plates arranged in an oil saving box on a transformer and located on the front side and the rear side of an iron core respectively, wherein the two metal perforated plates are parallel to two wide surfaces, and gaps are reserved between the two metal perforated plates and the inner walls of the wide surfaces of the oil saving box. The upper edges and the lower edges of the metal perforated plates are respectively flush with an upper end ring and a lower end ring of the transformer, and the metal perforated plates cover the iron core in the length direction. By adopting the damping structure for reducing the vibration of the transformer oil tank, oil flow pulsation of the transformer is decreased, the pressure distribution on the inner wall of the oil saving box of the transformer is uniform, accordingly vibration and radiation noise of the oil saving box of the transformer are reduced, the cost is low, space is saved, and the heat dissipation problem is avoided.

The invention discloses drying equipment for sludge drying. The drying equipment for the sludge drying comprises a feeding conversion box and a drying drum. The feeding conversion box is installed atthe left end of the drying drum. The circumferential outer wall of the drying drum is provided with a steering gear wheel. The lower end of the drying drum is provided with a driving tug. A guide chute is arranged inside a drying feeding pipe, the bottom of the guide chute is provided with a matching scraper built-in ring, and the scraper built-in ring is a special ring-knife-like structure. Whenthe built-in scraper ring moves vertically upward in the guide chute on the inner pipe wall of the drying feeding pipe, the sludge attached to the inner pipe wall of the drying feeding pipe can be scraped off, the sludge falls down along an arc-shaped inner wall of the scraper built-in ring into the feeding conversion box, and the falling sludge and other materials are transferred from the feedingconversion box to the drying drum to avoid the accumulation of the sludge and other sundries on the inner wall of the drying feeding pipe causes the pipe wall to be blocked.

The invention provides a dewatering machine which comprises an outer barrel, a motor and a dewatering barrel. The motor and the dewatering barrel are both sleeved with the outer barrel. An output shaft of the motor is fixedly connected with the bottom of the dewatering barrel through a flange. By adoption of the dewatering machine, the rotation speed can reach 2500-3000 r/min, and meanwhile, the dewatering machine is compact in structure, stable in running and low in noise.

The invention relates to a radial magnetic bearing structure and a multi-degree-of-freedom magnetic levitation mechanism containing the structure. The structure comprises an upper rotator assembly, alower rotator assembly and a stator assembly. The structure is simple, processing is convenient, and the assembly precision is high. The upper rotator assembly and the lower rotator assembly form a high-strength permanent even perpendicular main magnetic field along the axial direction; the magnetic steel surfaces of the upper rotator assembly and the lower rotator assembly are wrapped with a layer of magnetic conductive materials, so an even flat magnetic field with a large occupation rate can be formed in a magnetic gap to achieve the magnetism gathering effect. The stator assembly is of a hollow disc structure and built-in coils in the stator assembly are radially utilized in pairs in the perpendicular even magnetic field to form a couple, so the output force of the coils during motionsin the magnetic gap is even, the linear degree is high, and the high rigidity and low disturbance index requirements of a radial magnetic bearing are realized. The structure solves the difficulty that existing the magnetic force of magnetic bearings is greatly influenced by changes of magnetic gaps and the power consumption is large under large load bearing force and realizes the advantages of good magnetic force linear degree, high rigidity and lower power consumption. The structure belongs to the field of astrovehicle magnetic control systems.

The invention discloses an automobile shock absorber, which comprises an inner cylinder and an outer cylinder, an oil storage chamber is formed between the inner cylinder and the outer cylinder, and part of high-pressure gas is arranged inside the oil storage chamber, and the inside of the inner cylinder There are seals, separation pistons, overflow valves, action pistons and bottom valves in order from top to bottom, and an oil seal is provided on the end of the inner cylinder close to the seals, and the bottom of the oil seal is connected to the seal A guide is provided between the parts, and a piston rod is interspersed in the inner cylinder, and the piston rod passes through the oil seal, the guide, the seal, the separation piston and the overflow valve in sequence and Fixedly connected with the moving piston, an annular groove is provided on the inner wall of the inner cylinder near one end of the guider, and an annular protrusion is arranged on the inner wall of the inner cylinder and inside the annular groove. Beneficial effects: the invention has good shock absorption and buffering effect, long service life and stable structure.

The invention relates to a novel faucet device which is composed of a damping sleeve, a damping filter screen ball, a filter screen and a sleeve. The damping filter screen ball is positioned in the damping sleeve and is tangent with a frustum, the filter screen is positioned under the damping sleeve and above the sleeve, and the sleeve and the damping sleeve are connected. The novel faucet device aims at the defects that a generally-used faucet on the market is poor in splashing prevention, short in filter screen cleaning period, poor in effect on saving water resources and the like, is reasonable in structure, has the advantages of splashing prevention and secondary filter, brings convenience to a user and has the function of protecting the environment.

The invention relates to a 3D-sound-effect-based light-weigh vehicle-mounted vibration loudspeaker comprising a support device, an elastic connecting element, a radiation plate, a damping cover, and a vibration source. The support device, the elastic connecting element, the radiation plate, the damping cover, and the vibration source are installed on a vehicle. The support device and the radiation plate are connected by the elastic connecting element; and the damping cover and the support device are fixedly connected. The damping cover, the support device, the elastic connecting element, and the radiation plate form a vibration cavity in an encircling mode; the vibration source is arranged in the vibration cavity; and one end of the vibration source is fixedly connected with the radiation plate and the other end is fixedly connected with the damping cover. The damping cover is made of an aramid fiber braiding material. According to the invention, the size, cost, and weight of the product are effectively reduced; an out-of-balance phenomenon of the vibration source during a vehicle driving process can be prevented; distortion of the loudspeaker can be effectively avoided; the quality of the vibration source sound is improved; and the vibration source F0 is reduced by using the elastic connecting element and the low-frequency effect is enhanced.

The invention relates to the technical field of fresh air systems, in particular to a fresh air system exhaust pipe which comprises an exhaust pipe body, the exhaust pipe body comprises an outer pipe and an inner pipe, the inner pipe is arranged in the outer pipe in a sleeved mode, and a fan assembly, a cleaning assembly, an adjusting assembly and a driving assembly are arranged at one end of the exhaust pipe body. The fan assembly plays a role in damping air volume, so that noise generated by pipeline vibration is reduced, meanwhile, the fan assembly can drive the cleaning assembly, and dust in the exhaust pipe body is cleaned through the cleaning assembly; the driving assembly can drive the adjusting assembly, the air pressure of the outer pipe and the inner pipe in the exhaust pipe body is adjusted through the adjusting assembly, the air force is reduced, and therefore noise generated by pipeline vibration is reduced, through the arrangement of the outer pipe and the inner pipe, air with the small air pressure is exhausted from the inner pipe, air with the large air pressure is exhausted from the outer pipe, and air with different pressures is divided; convection generated by wind pressure is reduced, so that noise is reduced.

The invention discloses a gauge-changeable mold frame convenient to transfer, and belongs to the technical field of mold frames. The gauge-changeable mold frame convenient to transfer comprises a base, wherein a support is arranged in the base; the inner side wall of the base is fixedly connected with a spring and is connected with the support through the spring; a shock absorption damper is arranged between the inner side wall of the base and the outer side wall of the support; the shock absorption damper is located in the spring; and two guide rails are fixedly connected to the bottom part of the base. In the using process of the mold frame, bolts can be unscrewed on the surfaces of sliding blocks, the sliding blocks can be conveniently moved along the guide rails after the bolts are unscrewed, and the positions of the sliding blocks and the distance between the sliding blocks can be adjusted, so that the distance between the sliding blocks meets the using requirement; and after proper positions and intervals are reached, the bolts are screwed down, and the positions of trundles can be fixed by fixing the positions of the sliding blocks on the surfaces of the guide rails, so that the flexibility in use is achieved, the convenience in adjustment is realized, and the applicability of the mold frame is improved.

The invention discloses a truck monitor with a multi-picture blind area reversing auxiliary system, which comprises a host system, an external camera system and an automatic cleaning system, the external camera system is in communication connection with the host system, the automatic cleaning system is fixed on a truck, and the external camera system is fixed on the automatic cleaning system; the host system comprises a processor module, a memory module, a storage module, an LCD display module, an Internet-of-things module, an audio module and a high-definition recording module. According to the truck monitor, by arranging the parallelogram structure mounting mechanism and under the cooperation of the two tension springs, the camera can be stably fixed on the truck body, and the bumping of the truck body cannot be directly transmitted to the camera when encountering bumping, so that the camera is prevented from receiving large-amplitude bumping, and the quality of a shot picture is ensured. By arranging a plurality of cameras, blind areas existing in the truck are reduced to the maximum extent, and by arranging an automatic cleaning system, the cameras can be cleaned.

The invention relates to a flexibly landed foot mechanism of a humanoid robot. Shock absorption effect of feet of current robots is poor. The flexibly landed foot mechanism of the humanoid robot comprises an upswept sole plate, a bottom layer rubber gasket, a middle layer rubber gasket, a flat end opposite vertex waveform spring, a coating piece, a multi-dimensional flexible hinge, a six-dimensional force/torque sensor and an ankle support base. The multi-dimensional flexible hinge is fixedly arranged above the sole plate, and the ankle support base is connected with the multi-dimensional flexible hinge through the six-dimensional force/torque sensor. The bottom layer rubber gasket and the middle layer rubber gasket are arranged from top to bottom below the sole plate sequentially. The flexibly landed foot mechanism of the humanoid robot provided by the invention has the advantages of large bearing load, short stroke, small space required and the like, and the capacity of feet for absorbing shock is increased greatly.