141results about How to "With damping effect" patented technology

The invention discloses a magneto-rheological pipeline dual-dynamic damping absorber. The mode of combining dynamic vibration absorption and damping dissipation energy vibration damping is adopted for controlling vibration of a pipeline. A magneto-rheological damper is adopted as a mass block and a leaf spring to form a first-order dynamic vibration damping structure, when the pipeline vibrates, the mass block and the leaf spring vibrate along with the pipeline and generate inertia reactive force, and vibration of the pipeline is lowered. A piston body, a spring, magneto-rheological fluid and a cylinder tube of the magneto-rheological damper form a second-order dynamic damping vibration damping structure. When the magneto-rheological damper vibrates along with the pipeline, the piston body compresses the piston to generate reactive force for the magneto-rheological damper under the inertia effect, and when the piston body and the cylinder tube move relatively, the piston body dissipates vibration energy under the damping force effect of the magneto-rheological fluid. The controller adjusts the damping force according to the vibration acceleration of the pipeline, and the energy dissipation efficiency of the damper is improved. One way, radial, axial and fixing frames can be flexibly assembled according to the pipeline vibration phenomenon, and vibration of the pipeline in any direction is controlled.

The invention relates to the field of washing machines, in particular to a door cover device and a method for implementing assistance and damping functions of the door cover device. The door cover device comprises a door cover, a base and a hinge. The hinge is connected with the door cover and the base, comprises a torsional spring, a rotary shaft, a mounting portion and a rotary portion and can rotate in procedures from opening the door cover to closing the door cover, the torsional spring in relaxation states can be gradually changed to be in tension states in the procedures, and acting force which is opposite to the closing direction of the door cover can be generated and is smaller than the gravity of the door cover. The mounting portion is fixed to an end of the rotary shaft, the rotary portion can rotate around the rotary shaft, and the torsional spring sleeves the rotary shaft, is connected with an end of the rotary shaft and the rotary portion and can rotate to generate the acting force. The door cover device and the method have the advantages of simple structure, convenience in maintenance and repair and suitability for popularization and utilization.

The invention relates to a multifunctional electric wheelchair, which mainly comprises a Z-shaped frame, a backrest, a cushion, front guide wheels, back driving wheels, a steering mechanism, a balance mechanism, a toilet mechanism and a backrest tipping mechanism. The backrest is arranged at the back end of the Z-shaped frame, the cushion is arranged on the upper end face of the Z-shaped frame, the front end of the Z-shaped frame is provided with the front guide wheels through a front axle and a front fork absorber assembly, the back end underside of the Z-shaped frame is provided with the back driving wheels through a back axle, the steering mechanism and the balance mechanism are arranged at the front end of a wheelchair body, the toilet mechanism is arranged at the underside of the cushion, and the backrest tipping mechanism is arranged at the underside of the Z-shaped frame. The multifunctional electric wheelchair has the advantages that the wheelchair can manipulate the motions of advancing, retreating, steering, braking, resting on the back, relieving and the like by a single hand, and can realize walking speed switch, music play and starting of a drawer type table so as to well solve life self-care problems of trip, resting, relieving, reading books and newspaper, dining and the like of the disabled.

A nano-class damping emulsion paint is prepared from silisic prepane emulsion, polyurethane prepolymer, nano ZnO, nano TiO2, nano calcium carbonate, disperser, nano-class pigment, filming assistant, perfum and distilled water. Its advantages are high resistance to mildew, water, bacteria, yellowing and flush, smooth surface, both photocatalytic and nano-metal bacticiding effect, and better hydrophobicity and oleophobicity.

The invention discloses an anode component in an X-ray tube which solves the problems that the bearing of the anode component in the existing X-ray tube can not better adapt a high temperature change, leads the X-ray tube to generate noise and vibration during the working process and can not ensure the service life of relevant movable parts. The invention is structured in that the anode component in the X-ray tube comprises a hollow anode bar body, a connection shaft extending out of the outer side of the anode bar body as well as a ball bearing and an outer ring which are arranged at the outer side of the connection shaft; the bearing is arranged in the anode bar body; a connection flange is arranged on the extending end of the connection shaft; the invention is characterized in that the anode bar body is internally provided with a spring acted on the inner end of the connection shaft.

The invention discloses a pipe end face polishing device which comprises a shell. A pipe feeding opening is formed in the left end of the shell. The left portion of the upper end and the left portionof the lower end of the shell are provided with pipe sleeves, thread rods, control nuts, U-shaped supporting plates, horizontal supporting plates, supporting springs and wheel axles. A rotating shaftand a polishing wheel axle are arranged on the middle portion of the inner wall of the shell. The right portion of the lower side of the shell is provided with a motor. A transmission shaft is arranged at the output end of the motor. A transmission belt is arranged between the periphery of the transmission shaft and the rotating shaft. The upper wall of the shell is provided with a dust collectingcylinder. Ventilating fan vanes are arranged at the upper end of the periphery of the transmission shaft. The dust collecting cylinder is provided with an air output cover. The left wall of the shellis provided with an air injecting pipe. An air pump is arranged on the left side of the upper end of the shell. The pipe end face polishing device can be pushed into a pipeline stably and machine theend face flexibly, and meanwhile impurities and tail gas can be cleaned fast and synchronously.

The invention discloses a variable-rigidity vertical vibration isolation/seismic isolation support. The key points of design are that a pre-pressing spring is installed between a first horizontal plate and a second horizontal plate, a pre-stress tendon is further installed between the first horizontal plate and the second horizontal plate, and two anchors of the pre-stress tendon are anchored to the upper side of the first horizontal plate and the lower side of the second horizontal plate respectively; the pre-pressing spring is in a pre-pressing state by tensioning and anchoring the pre-stressed tendon; a third horizontal plate is arranged below the second horizontal plate, and a second spring is connected between the second horizontal plate and the third horizontal plate; a spring rigidity adjusting device is mounted between the first horizontal plate and the third horizontal plate; the spring rigidity adjusting device comprises a protruding part arranged on the side portion of a pressing rod, and the protruding part of the pressing rod is arranged in an adjusting cavity; under the action of a static vertical load G, the second spring provides supporting rigidity, the design requires that G is less than the pre-pulling force F of the pre-stressed tendon and is the initial state, and the second spring is in the initial state, the distance between the bottom of the pressing rodand the adjusting cavity is greater than or equal to (F-G)/K2.

The invention discloses a flat type single-arm robot based on transmission of synchronous pulleys and relates to the field of robots. The flat type single-arm robot comprises an SCARA mechanical arm.The SCARA mechanical arm comprises a front arm, a middle arm, a tail arm, a front arm transmission mechanism, a middle arm transmission mechanism and a tail arm transmission mechanism. The front arm,the middle arm and the tail arm are arranged sequentially from front to back. The front arm transmission mechanism is a one-level transmission mechanism, and an output shaft of a motor of the front arm transmission mechanism is connected with a rotary shaft of the front arm through one set of synchronous pulleys. The middle arm transmission mechanism is a two-level transmission mechanism, and an output shaft of a motor of the middle arm transmission mechanism is connected with a rotary shaft of the middle arm through sequential transmission of two sets of synchronous pulleys. The tail arm transmission mechanism is a three-level transmission mechanism, and an output shaft of a motor of the tail arm transmission mechanism is connected with the tail arm through sequential transmission of three sets of synchronous pulleys. The flat type single-arm robot has the advantages that the rotary angle of the mechanical arm is not limited, and the size of the mechanical arm is reduced.

The invention relates to a refrigerator and an image pickup device for the refrigerator. The image pickup device is arranged in a storage space of the refrigerator and comprises a base provided with an installing wall and a camera, wherein the installing wall is provided with an installing hole, the camera comprises a camera body for shooting the storage space and a connecting column, one end of the connecting column is connected with the camera body, the other end of the connecting column is provided with a flange, and the flange is clamped on the inner side of the installing hole in a connected mode to allow the camera to rotate with respect to the base. In addition, the invention further provides a refrigerator provided with the image pickup device. The image pickup device can rotate, an image pickup angle of the image pickup device is increased, the image pickup device has a damping effect in rotation, shakes are decreased, and the operation feeling is improved.

The invention provides a magnesium alloy pumice ferric oxide cobalt composite material and a preparation method thereof. The composite material has high absorbing properties and excellent damping performance. The method of the invention has simple process and low production cost, and is suitable for industrialized production. The composite material takes magnesium alloy as a matrix; pumice ferric oxide cobalt composite material and dolomite granule are distributed on the matrix; the volume percent of the pumice ferric oxide cobalt composite material and the dolomite granule accounts for 40-45% of the composite material; the size of the composite granule is 0.5-1mm; and the magnesium alloy base body comprises the following chemical composition by weight percent: 4-8% of Al, 0.01-0.05% of Th, 0.5-1% of Si, 0.001-0.005% of Bi and the balance of Mg.

The invention relates to the technical field of monitoring equipment, and discloses intelligent security and protection monitoring equipment. A camera body is included and arranged in an installing shell. The installing shell comprises a bottom plate. The bottom plate is provided with two vertical plates in parallel. A clamping mechanism for installing the camera body is arranged between the two vertical plates. An arc protection plate is arranged above the two vertical plates. The positions, located at the front end and the rear end, of the upper end face of each vertical plate are provided with lifting cavities with upward openings. The lifting cavities are internally provided with lifting rods through first springs, wherein one ends of the lifting rods stretch out of the lifting cavities and are connected with the protection plate. Through the arrangement of the above structure, when rain and snow, hail and the like impact on the protection plate, the first springs can conduct buffering protection on the protection plate, the protection plate has a buffering effect, accordingly, the camera body arranged in the shell is well protected, and the service life of the camera body is prolonged.

The invention provides a magnesium alloy diatomite ferric oxide composite material and a preparation method thereof. The composite material has high microwave-absorbing performance and excellent damping performance. The preparation method has simple process and low production cost and is suitable for industrialized production. The composite material takes a magnesium alloy as a substrate, a diatomite ferric oxide compound is distributed on the substrate, the diatomite ferric oxide compound is 40-45 percent by volume of the composite material, and grainsize of each diatomite ferric oxide compound particle is 0.5-1mm; the magnesium alloy substrate is prepared from the following chemical components in percentage by weight: 3-8 percent of Al, 0.01-0.05 percent of Th, 0.5-1 percent of Si, 0.005-0.01 percent of Sb and the balance of Mg; and the diatomite ferric oxide compound is formed by filling ferric oxide in gaps of diatomite, and a film is formed on each gap wall surface.

The invention discloses a multi-layer amorphous alloy structure and a weaving method thereof for protection equipment. The multi-layer amorphous alloy structure is formed by bonding amorphous strips with a high-molecular polymer such as rubber or ETBN toughened epoxy resin. As an amorphous alloy layer is used, the multi-layer amorphous alloy structure has the characteristics of high strength and high elasticity, and the defensive penetration capability is improved; as a high-molecular polymer layer is used, the multi-layer amorphous alloy structure has the characteristics of low density, goodviscoelasticity and the like and has certain energy-absorbing and damping effects, and the plasticity of an overall structure is improved; the multi-layer structure has the characteristics of lightness and good toughness; as the soft and hard alternating, up and down interlaced weaving and multi-layer structure designs are adopted, the energy-absorbing effect can be further improved, and the defensive non-penetration damage ability is improved. The multi-layer amorphous alloy structure simultaneously has triple functions of lightness, softness and safe defense, is high in maneuverability, simple in process and low in cost and has wide application range and good application prospect.

The invention relates to the technical field of torque limiters, and particularly relates to a torque limiter with a unidirectional slide function. The torque limiter with the unidirectional slide function comprises an input sleeve, an input shaft and a connection flange, wherein the input shaft is slidably arranged at one end of the connection flange in the axial direction of the input shaft; a first limit mechanism used for limiting radial displacement of the connection flange is arranged on the input shaft; first springs are arranged in the connection flange and between the connection flange and the input shaft; and the input sleeve is located between the input shaft and the connection flange. The torque limiter with the unidirectional slide function only limits a torsion force transferred by a transmission system in one direction in a manner of slide during use, and automatically recovers connection after a case of overload disappears. The torque limiter with the unidirectional slide function can be used for weakening a reverse impact existing in the transmission system to play a role of protecting a fan gearbox and other equipment, and has an effect of shock absorption or damping.

The invention discloses a prefabricated wall structure. The prefabricated wall structure comprises a wall, wherein the wall is arranged between the building ground and a building ceiling, the end of the wall in the length direction extends to a built structural body which is crossed with the wall, the wall comprises one or a plurality of unit modules which are arranged in the length direction of the wall as well as a first elastic support seat and a second elastic support seat which have elasticity, and the wall is configured so as to be in sliding connection with the building ground and the building ceiling in the length direction of the wall; a first adjusting gap is formed between the wall and the built structural body, and the first elastic support seat is clamped between the wall and the built structural body; and a second adjusting gap is formed between the wall and the building ceiling, and the second elastic support seat is clamped between the wall and the building ceiling. The prefabricated wall structure provided by the invention relates to the field of buildings, internal stress of the wall can be eliminated, the wall is prevented from generating cracks, additionally, the vibration of the wall can be eliminated, a vibration reduction effect is achieved, and the wall is prevented from being damaged due to vibration.

The invention relates to a circuit device having at least one circuit carrier package cover, especially a gearbox controller. The circuit device (10, 30, 40, 50, 70), especially the gearbox controller has at least one cover (18, 52) for encapsulating a circuit carrier (12) in which several electrical and electronic components (14) are mounted. An absorber, formed by oil-combined loose materials or forming bodies (76, 78) having several different space geometrical shapes is sealed in inner space (16) for absorbing the penetrated oil from outside. With the absorber, sensitive component (14) will not be wet by oil.