48results about How to "Overcome vibration" patented technology

A quick-release device for use on a bicycle includes a lever, an axle rotatably received in the lever, a shaft extending through the axle, a force device sleeved on the shaft, at least one spring sleeved on the shaft and a nut screwed onto the shaft. The axle includes an indentation defined therein and a first abutment formed on a bottom of the indentation. The shaft includes a shank and a head formed one end of the shank such that a second abutment is formed between the shank and the head. The head is received and engaged in the indentation such that the shank can not be rotated relative to the axle and the connected of the quick-quick device in promoted.

The invention relates to a non-magnetic low vibration coaxial pulse tube refrigerating machine wherein the pulse tube and the cold accumulation device are in coaxial arrangement, between which cold accumulation stuffing is filled, an arched flow diverter is arranged on an extending section and the end portion, closely spaced vertical through-holes are arranged on the arched portion, vertical grooves are arranged evenly circular ring external wall, the cover type cold end heat exchanger covers the groove and packs by bonding, the horizontal split cold platform supported by the support rod and fixed on the hot end flange vertically are arranged on the cold end heat exchanger, the cold platform and cold end heat exchanger are connected by flexible heat guide band, the coupling channel under the throttle holes are connected to phase modulation capillary.

An adjustable device for balancing a fan includes a hollow hub, which defines a receiving space and a plurality of fan blades extending outward from the hollow hub. Wherein, the receiving space includes an inner ring at the inner wall surface thereof and at least a balancing granular part is connected to the inner ring via a weak spot such that the weak spot is capable of being broken for separating the balancing granular part from the ring. Once the balancing granular part is removed to reduce weight at the position without the balancing granular part, the fan is able to run steadily instead of in a state of unbalancing.

The invention belongs to the technical field of steel alloy materials and particularly relates to a short-process preparation method of a thin specification high-manganese steel plate. Elements of thethin specification high-manganese steel plate comprise, by mass percent, larger than or equal to 0.015% and smaller than or equal to 0.3% of C, larger than or equal to 15% and smaller than or equal to 25% of Mn, larger than or equal to 1% and smaller than or equal to 3% of Si, larger than or equal to 1.5% and smaller than or equal to 3% of Al, smaller than or equal to 0.003% of P, smaller than orequal to 0.002% of O, smaller than or equal to 0.002% of N, smaller than or equal to 0.003% of S and the balance Fe. The preparation method comprises the following steps that molten steel is smelted,and a tundish, a flow distribution bag and a side sealing plate are preheated; 2, the tundish is poured in; 3, the flow distribution bag is poured; 4, double-roller thin-strip casting equipment is utilized for cast rolling; 5, one-pass hot rolling is carried out after cooling is carried out in nitrogen protective atmosphere; 6, curling is carried out after air cooling; 7, acid pickling is carriedout; 8, cold rolling is carried out; and 9, annealing is carried out on the nitrogen atmosphere protecting condition. The thickness of the thin specification high-manganese steel plate is 0.47-1.2 mm, the width is 500-2000 mm, the extension strength is 750-1400 MPa, and the break ductility is 30-80%. The technology is a short-process near-end forming technology, and the method has the beneficialeffects of being low in cost, low in energy consumption and the like.

The Metal Lathe, Core Drill Adaptor and Rate of Cut Device are simple lathing and drilling devices including a device that restricts the advancement of the drilling and lathing motions. These devices are attached to a most any common standard upright drilling machine in a secure method to allow a person with little or no experience to operate these devices.

The invention aims to provide a Fourier transformation interferometer spectrometer of high spectral resolution, small volume and high stability. The spectrometer can be used for measuring spectrum and is based on the slow light velocity controllable technology. The spectrometer changes the traveling time of light in limited distance by utilizing the slow light technology, that is, utilizing the technology to change the optical path difference between two light paths on the part of interferometer in the spectrometer and enlarging the optical path difference, thus obviously improving the spectrum sensitivity of the spectrometer, eliminating a control system and a collimating system required for moving a reflecting mirror, simplifying the spectrometer, eliminating vibration and positioning error and improving stability.

The invention discloses a middle and large-sized air purification system adopting coupling of solid-state fans to carry out adsorption purification, which comprises a cabinet body, an adsorption purification unit and a gas transmission unit. The gas transmission unit provides power for air circulation in the system; air flow can be greater than 15m<3> / h; the gas transmission unit comprises an air duct for connecting the cabinet body and the adsorption purification unit, first solid-state fans for providing gas circulation power, a gas distributor and a driving power supply; the gas distributor comprises at least three air supply pipes connected in parallel, a solid-state fan mounting pipe connected with the air supply pipes and an air supply pipe arrangement device for mounting the air supply pipes; pipelines connected with the air supply pipes are arranged in the solid-state fan mounting pipe; one or more first solid-state fans are mounted in each pipeline. According to the middle and large-sized air purification system disclosed by the invention, no vibration or noise is generated in the air flow transportation process; the solid-state fans and the air supply pipes are easy to integrally couple, so that a diameter of an air supply pipeline can be greatly reduced, and mounting cost and a mounting space are saved; parameters in the transportation process, such as a flow rate, flow and the like, are easy to regulate.

The invention discloses a linkage lifting mechanism for tray brushes and a rolling brush of a sweeper. The lifting mechanism comprises a first quadrangular linkage mechanism, a second quadrangular linkage mechanism, a fixed support, an electric drive pusher (8), wherein the second quadrangular linkage mechanism is opposite to the first quadrangular linkage mechanism, and the fixed support is connected with the first quadrangular linkage mechanism and the second quadrangular linkage mechanism; the fixed support comprises a first cross beam (5) and a second cross beam (7) of the fixed support and a first fixed link or a second fixed link (6), wherein the first cross beam (5) and the second cross beam (7) are oppositely arranged and are respectively connected with the first quadrangular linkage mechanism and the second quadrangular linkage mechanism, and the first fixed link or the second fixed link (6) is connected with the first cross beam (5) and the second cross beam (7); one end of the electric drive pusher (8) is hinged with a sweeper frame (9), and the other end of the electric drive pusher (8) is hinged to the second cross beam (7) of the fixed support. According to the linkage lifting mechanism disclosed by the invention, misplacement can be prevented, and the sweeping effect is improved.

An underground station of cutting structure for city rail transportation is of at least 1 / 2 roof open without ventilation device and air-conditioner, so for easy construction and low cost.

The invention provides a wire-exposed type small-inertia thermocouple and belongs to the technical field of testing of the performances of an aero-engine. The wire-exposed type small-inertia thermocouple is good in dynamic performance and long in service life. The wire-exposed type small-inertia thermocouple comprises a thermocouple protecting sleeve and a thermode. The thermocouple is characterized in that the temperature measuring end, facing the direction of an air stream, of the thermode is of an n shape which is wide outside and narrow inside; the temperature measuring end of the thermode is bended upwards along the middle portion parallel to the side where a hot junction is located so that a right angle form can be obtained, and therefore the side where the hot junction is located faces the direction of the air stream; the bended end is perpendicular to the center line of the thermocouple protecting sleeve and the other end and the bended end are perpendicular to each other.

The invention discloses a linear dynamic device of a spiral electromagnet. The linear dynamic device comprises a coil frame, a main shaft, a coil, a coil protection cover and a fixed seat, wherein the coil frame is wheel-shaped and is provided with a vertical hollow shaft; the main shaft can be just inserted into the hollow shaft of the coil frame and is in sliding fit with the hollow shaft; the coil is wound on the coil frame; the coil protection cover is provided with a cylindrical shell matched with the coil frame and is matched with the coil frame to form a sealed space for accommodating the coil; and the fixed seat is connected with a flange at the bottom of the coil frame and is provided with a void-avoiding groove coaxially matched with the coil frame. The higher the height of the coil is, the longer the stroke of the main shaft is. The length of the main shaft also can be adaptive according to the application environment. By adopting the technical scheme, the linear dynamic device has a simple structure and low friction, overcomes vibration and noise, has a wide application range, can substitute the traditional dynamic device or power assisting device of an electrical swing bed and also can be applied to a lifting dynamic device or a power assisting device of amusement devices, such as a giddy-go-round and the like and to other similar mechanical devices adopting linear stroke.

A quick-release device for use on a bicycle includes a lever, an axle rotatably received in the lever, a shaft extending through the axle, a force device sleeved on the shaft, at least one spring sleeved on the shaft and a nut screwed onto the shaft. The axle includes an indentation defined therein and a first abutment formed on a bottom of the indentation. The shaft includes a shank and a head formed one end of the shank such that a second abutment is formed between the shank and the head. The head is received and engaged in the indentation such that the shank can not be rotated relative to the axle and the connected of the quick-quick device in promoted.

The invention belongs to the technical field of pressure gas expansion refrigeration, and relates to a double-layer nozzle and double-row pipe gas wave refrigerator with built-in drive hydraulic balance. According to the double-layer nozzle and double-row pipe gas wave refrigerator, double layers of nozzles mounted on a main shaft of the gas wave refrigerator are used for jetting gas into corresponding double rows of vibration receiving pipes so as the achieve the aims of increasing the number of the receiving pipes by one time and increasing the handling capacity. A hydraulic balance device is built for offsetting, overcoming and balancing the disadvantage that the axial force is increased due to axial gas input, and the problem causing shortening of the service life of the refrigerator can be effectively solved. A transmission device is arranged in the middle segment of the refrigerator in an embedded manner and is driven by a motor, and the contradiction that the two ends of the refrigerator are occupied is solved well. In order to prevent gas mixing and outward leaking before and after refrigeration so as to improve the refrigeration efficiency, the refrigerator mainly selectsmultiple single-end-face mechanical seals besides a labyrinth seal and a spiral seal, the mechanical seals can adapt to the production work conditions of the gas wave refrigerator well, and the long service life of equipment and stable and safe operation can be guaranteed.

The invention relates to a permanent magnet two-phase brushless sub-stator motor, which comprises a stator, a main winding, an auxiliary winding, a permanent magnet rotor and a starting device, and is characterized in that: the stator consists of at least two sub-stators; the slot number of the sub-stators is the multiple of 3; the total slot number of the stator is the multiple of 6; and an eccentric gap is not formed between a stator tooth and the permanent magnet rotor. The motor has the advantages that: 1, the defect of vibration and noise generated by magnetic flux distortion due to the eccentric gap in the prior art is overcome; and 2, the eccentric gap is not formed, so the motor can rotate clockwise and anticlockwise, and the application field of a product is expanded. In addition, due to a sub-stator structure, a winding machine special for the sub-stators has a high speed, a few copper or aluminum wires are used, and working hour and materials are saved.

The invention discloses a high-speed and low-noise precise ball screw pair which consists of a ball screw, a ball nut, balls, an elastic buffer, an elastic reverse damper, a nut shell and a seal ring, wherein the ball screw is sheathed with the ball nut, roller paths are arranged on an outer circle of the ball screw and an inner circle of the ball nut, and the roller paths are internally providedwith the balls; and two ends of the ball nut are provided with reverse grooves, and each reverse groove is provided with the elastic buffer, the elastic reverse damper and a through ball return channel respectively. Under a high-speed motion condition, the high-speed precise ball screw pair structure can effectively overcome shock and vibration generated in the returning process of the ball in the rolling and autorotation directions and absorb a large quantity of frictional heat generated in the motion of the ball rolls, thus being capable of solving the problems of noise, vibration and heating of the precise ball screw pair under the high-speed motion condition.

The invention provides a speed reducer fixing device for a roller gang, and belongs to the technical field of roller gang equipment of continuous machines. According to the speed reducer fixing devicefor the roller gang, the side face of a motor fixing chassis (4) is connected with a supporting beam (1), a motor fixing belt (6) is arranged on a speed reducer in a sleeving mode and is fixedly connected with a motor fixing disc (4), a speed reducer assembling base plate (7) is arranged at the lower end of a speed reducer body (2), the side face of a speed reducer fixing chassis (5) is connectedwith the supporting beam (1), and the speed reducer assembling base plate (7) is connected with the speed reducer fixing chassis (5). According to the speed reducer fixing device for the roller gang,fault points can be eliminated through the speed reducer body (horizontal speed reducer) fixing device, so that the overall stability of the speed reducer fixing device is improved, the dangers are reduced for workers, and the speed reducer fixing device has a positive effect on reducing the cost and improving the efficiency; and meanwhile, fixing device connecting bolts and connecting plates arenot needed, so that the strength is ensured, and fatigue fractures are prevented.

The invention provides a resetting method for a pointer of an automobile instrument. The method comprises the following steps that: 1, a rotary potentiometer is arranged on a rotary shaft, which is used for controlling the pointer of the automobile instrument, of a stepping motor, wherein the rotary potentiometer is electrically connected with an instrument control system and comprises a resistor body and a movable contact which is arranged on the resistor body and is linked with a rotation shaft of the stepping motor; 2, voltage is applied to two ends of the resistor body; and 3, when a vehicle is just ignited and the speed is zero, the instrument control system acquires a voltage signal of the movable contact, acquires the slip angle of the pointer relative to the zero point according to the acquired voltage signal of the movable contact, and controls the stepping motor to drive the pointer to rotate a corresponding angle to zero. By the method, the problem of lock during automobile ignition and resetting of instrument can be solved, and defects of vibration and noise of the instrument pointer during resetting of the instrument and shortening of service life of the stepping motor are eliminated.

The invention discloses a novel vehicle hybrid two-stage suspension system. The novel vehicle hybrid two-stage suspension system comprises a passive suspension arranged between a vehicle frame and a vehicle axle, wherein the lower end of the passive suspension is connected to the vehicle axle; the upper end of the passive suspension is connected to the vehicle frame; an active suspension is arranged on the vehicle frame; an active suspension is arranged on the vehicle frame; and the upper end of the active suspension is connected to a suspension plate. The novel vehicle hybrid two-stage suspension system can solve the problem that the active suspension of a vehicle in the prior art has relatively high energy consumption and complicated structure. The novel vehicle hybrid two-stage suspension system has reliable structure, strong adjustability and high riding comfort.

A control system for a virtual reality experience platform, comprising: a controller (110), a driver (120), and a virtual reality experience platform (130). The controller (110) is used for sending a control instruction to the driver (120). The driver (120) is used for driving the virtual reality experience platform (130) according to the control instruction. The virtual reality experience platform (130) comprises: an upper platform (10), a lower platform (20), and multiple motion execution mechanisms (30). Each motion execution mechanisms (30) comprises: at least two linear motors (310), at least two sliding bars (320), at least two first hinge components (330), and at least one second hinge component (340). The at least two linear motors (310) are fixed on the lower platform (20). One end of the at least two sliding bars (320) is hingedly connected to the at least two linear motors (310) by means of the at least two first hinge components (330), respectively. The other end of the at least two sliding bars (320) is hingedly connected to the upper platform (10) by means of the at least one second hinge component (340). By means of matching motion of the multiple motion execution mechanisms (30), six-degree-of-freedom motion of the upper platform (10) is implemented.

The invention provides a compressor with an air supplementing pressure drop reducing effect and a refrigerating unit. The compressor comprises a shell, a compression cavity is formed in a shell, and the shell is provided with an air supplementing cavity. According to the compressor with the air supplementing pressure drop reducing effect and the refrigerating unit provided by the invention, the shell is directly provided with the air supplementing cavity, the problems that in the prior art, an air supplementing pipeline is additionally provided with a buffering tank so that vibration caused bythe air supplementing pipeline can be reduced, and in addition, the unit cost and size are increased are solved; the unit structure is effectively simplified, and the unit cost is reduced; meanwhile,the diameter of through holes is decreased, the communication duration and communication area of adjacent tooth grooves are decreased, accordingly, gas leakage of the adjacent tooth grooves is relieved, the purposes of reducing pressure pulsation and pressure drop are achieved, the volumetric efficiency of the compressor in the compression process is improved, and the efficiency of the compressorand the efficiency of the refrigerating unit are improved.

This invention relates to locking devices and particularly to an actuator assembly for a locking device with electronic control. The actuator assembly includes: a motor, having a drive shaft installed to a motor shaft, and a coil spring installed to the drive shaft, and further includes: a follower shaft capable of displacing in an axial direction in the coil spring, and a pin installed onto the follower shaft and rotatable into the coil spring, and the follower shaft is extended into the coil spring and slidably fitted to the coil spring. Compared with the prior art, this invention effectively maintains a radial limitation of the cylinder spring to overcome the vibration of the spring occurred during the rotation of the cylinder spring and the axial displacement of the follower shaft.

The present invention discloses a torque control method and device of a reluctance motor, a storage medium and a reluctance motor. The method comprises the steps of: determining the current compensation amount of the reluctance motor; and adding the current compensation amount to a given voltage of a motor controller of the reluctance motor to achieve the compensation of the torque pulsation for the reluctance motor caused by the counter electromotive force harmonic wave. According to the scheme, the problems are solved that the torque pulsation and the noise of the motor are large when the reluctance motor is operated, and the effect on reduction of the torque pulsation and the noise of the motor is achieved.

The invention relates to a multifunctional mechanical pump. The multifunctional mechanical pump comprises a shell, an impeller, a rotating shaft and a motor; the impeller is installed in the shell, the rotating shaft is connected with the motor, an impeller installing cavity is arranged in the shell, the impeller is installed in the impeller installing cavity, an installing piece located between the impeller and the motor is fixedly installed in the shell, a fixed bearing is installed in the installing piece, and a sealing ring for sealing the fixed bearing is arranged in the installing piece; the position where the installing piece is fixed is further provided with a sealing cover for sealing the sealing ring and the fixed bearing into the installing piece, and the front end of the rotating shaft extends into the installing piece, sequentially penetrates the fixed bearing, the sealing ring and the sealing cover, enters the impeller installing cavity and is fixedly connected with the impeller; and the installing piece and the shell are of an integrated structure, or the installing piece is a fixed flange. The multifunctional mechanical pump is high in rotating speed and reliable in performance, the problems about high temperature grease cooling and superconduction lubrication which are generated by high-speed rotation are solved, external force friction is avoided, and the multifunctional mechanical pump is suitable for pipe conveying with particular liquid, dense slurry, dry aggregates and clean water.

The utility model relates to a top-mounted built-in gas wave refrigerator with balanced drainage, which belongs to the technical field of pressure gas expansion refrigeration. The machine adopts a built-in structure that is completely installed from the top, and the labyrinth seal dynamic ring that plays a key role is integrated with the main shaft, and the shaft is realized by entraining air in the shaft and using labyrinth seals with the same structure and size on both sides. The balance of axial force solves technical problems such as easy damage to bearings and shortened machine life due to pressure imbalance caused by high pressure, and more effectively prolongs machine life and achieves the purpose of improving refrigeration efficiency. The top-mounted embedded overall structure and the axial combined radial labyrinth seal form make the seal and other components form a whole, which is convenient for processing, installation and disassembly, and can better meet the sealing requirements. The multi-stage orifice plate dissipation and drainage structure can effectively eliminate the liquid accumulation in the device, which overcomes the disadvantage that seriously affects the efficiency of adiabatic refrigeration, and adopts the form of avoiding the direct dragging of the motor, which can solve the possible safety hazard caused by the motor shaft displacement Hidden danger.

The invention relates to the technical field of machine tool main transmission mechanisms, in particular to an automatic three-gear stepless speed change main transmission system suitable for numerical control horizontal lathes and numerical control horizontal turning centers. The automatic three-gear stepless speed change main transmission system is characterized by comprising a motor device, a main transmission mechanism, a worm and gear transmission mechanism and a hydraulic gearshift, wherein the motor device comprises a main shaft servo motor; the hydraulic gearshift comprises a first oil cylinder, a second oil cylinder and a third oil cylinder which are mounted on a main shaft box body; a worm and a worm gear of the worm and gear transmission mechanism are meshed with each other; the end part of the worm is provided with a worm end bevel gear which is meshed with a second shaft end bevel gear; the main shaft box body is also provided with a coder device which is used for measuring and feeding back the rotating speed of a main shaft. The automatic three-gear stepless speed change main transmission system is respectively provided with three transmission paths of belt transmission, gear transmission and worm and gear transmission, the structure is simple, the speed adjustable range is wide, high-speed efficient finish machining is realized, and low-speed large-torque rough machining and semifinishing are also suitable.