182results about How to "No friction loss" patented technology

The invention provides a speed changing magnetic pump, which comprises a pump body, a speed changing magnetic transmission device installed in a casing cavity and a driving motor. The speed changing magnetic transmission device comprises an inner magnetic rotor, an outer magnetic rotor, an isolation sleeve and a magnetic field adjusting ring. The inner magnetic rotor comprises an inner magnetic rotor magnet ring and an inner magnetic rotor magnet core, the outer magnetic rotor comprises an outer magnetic rotor magnet core and an outer magnetic rotor magnet ring which forms an annular cavity with the inner magnetic rotor magnet ring, and the isolation sleeve fixedly connected with a pump body is arranged in the annular cavity. The magnetic field adjusting ring fixedly installed on the isolation sleeve is an annular body formed by connecting a plurality of magnet core blocks and a plurality of epoxy blocks at intervals and used for adjusting magnetic fields of the inner magnetic rotor and the outer magnetic rotor to enable the rotating speed of an output rotating shaft connected to an impeller in a pump body to be different from the rotating speed of an input rotating shaft connected to the driving motor.

The invention discloses a fast steering mirror. An upper support frame is sequentially connected with an auxiliary mirror bracket and a main mirror bracket by an elastic bracing frame, and the main mirror bracket and the auxiliary mirror bracket are respectively fixed with a main mirror and an auxiliary mirror; four linear voice coil motors are symmetrically arranged on the surface of the upper bracing frame, and the center is provided with a through hole; a semiconductor laser, a position sensitive detector and a spectroscope tilting 45 degrees are respectively arranged under the upper bracing frame, wherein, laser emitted from the semiconductor laser passes through the spectroscope and the through hole and reaches the auxiliary mirror, the auxiliary mirror reflects the laser back to the spectroscope, and then the spectroscope reflects the laser to the position sensitive detector. The fast steering mirror has the advantages of compact structure, high angle control precision, no friction loss and high resonance frequency, can be widely used in the fields such as space optical communication, adaptive optical compensation, laser processing, laser radar and the like.

The invention discloses a biochip spotting platform which relates to the preparation of a microarray biochip. The biochip spotting platform mainly utilizes a precision linear motor which can carry out the high-speed motion for constituting a three-dimensional distribution mechanical hand, and simultaneously comprises a spotting head with 1 to 48 spotting needles, a chip fixed platform, a sample box platform and a spotting needle cleaning and drying device are arranged on a working platform with the water bath cooling function, an electric control box and the distribution mechanical hand are operated under the control of software of a computer, thereby rapidly completing the spotting and finally forming the complete biochip. The spotting platform is characterized by compact structure, simple and convenient operation, high speed, efficiency and precision, less cross-infection and broad applicability, etc., thereby being very applicable to the scale production of the biochips and also being applicable to scientific research and applications.

The invention discloses a PCB coil and an angle measuring method for an electromagnetic induction type angle sensor apparatus. The PCB coil and the angle measuring method for the electromagnetic induction type angle sensor apparatus comprise a receiving coil for receiving a signal sent by a rotor reflection coil, an excitation magnetic field rotor reflection coil for receiving stator transmitting coil, and the stator reflection coil for sending an excitation signal to the rotor reflection coil; the receiving coil and the stator transmitting coil are connected and fixed to a stationary rotation shaft, the rotor reflection coil is arranged on a sensor rotor, the three coils are coaxially and fixedly arranged in parallel, the rotor reflection coil comprises an annular coil portion and a copper portion, and the annular coil portion and the copper portion are fan-shaped. The PCB coil and the angle measuring method for the electromagnetic induction type angle sensor apparatus can implement non-contact angle measurement, has the advantages of high accuracy, low cost, installation convenience, maintenance and management easiness and low environmental requirements, can accurately, stably and quickly complete tasks and solves many problems such as reliability, accuracy and cost of angle measurement methods.

The invention discloses an array typed laser scanner comprising a base, a control driving system and a plurality of auxiliary mirrors arranged in array. The auxiliary mirrors are arranged on the same direction and are fixed on the base; gaps are reserved between two adjacent auxiliary mirrors, so that the auxiliary mirrors do not touch each other when inclining to each other; the control driving system is connected with piezoelectric drivers in Ns of the auxiliary mirrors to realize open loop control of deflecting angles of reflectors. A multiple light ray scanning method is utilized to connect a plurality of small scanning fields into a big scanning field, and is capable of ensuring scanning angles and scanning frequency at the same time, each auxiliary is capable of scanning independently and multiple task detection is realized. With the array typed laser scanner, space utilization rate is greatly increased, and scanning angles are improved; the array typed laser scanner is characterized in that the array typed laser scanner is fast in driving speed, high in control accuracy, no mechanical abrasion, compact in structure, high in space utilization rate and good in stability, small in volume, light in weight, high in rigidity and is especially suitable for application of satellite and unmanned machine imaging laser radar.

The invention discloses an alloy material of copper, nickel, silicon and bronze and a preparation method thereof. The alloy material comprises the following substances in percent by weight: 1.6% to 2.2% of nickel, 0.4% to 0.8% of silicon, 0.008% of rare earth alloy and 96.002% to 97.002% of copper. The alloy material of copper, nickel, silicon and bronze is prepared by the processes of proportioning, melting, casting, sawing, extruding, drawing, straightening, inspecting and packing into a warehouse, enhances the stress corrosion resistant capability, and has the main performance change of reducing a hardness value and the grain size.

An auto-fill two-layer in-half wear resistant elbow of a concrete pump truck is formed by an outer-layer protection elbow, an inner-layer heterogeneous wear resistant combined elbow and a wear resistant connecting flange; a reserved filling space is formed between the outer-layer protection elbow and the inner-layer heterogeneous wear resistant combined elbow. The wear resistant elbow is designed into a unique structure with two layers including a protection layer and a wear resistant layer, and the protection layer protects the wear resistant layer, so that the elbow is prevented from being deformed and even damaged by external force in transportation, installation and use processes, and from being deformed and even damaged by internal material impact; when the wear resistant elbow is used for the first time, concrete grout enters the reserved filling space by a reserved filling seam of the heterogeneous combined elbow, so that the outer-layer protection elbow and the inner-layer heterogeneous wear resistant combined elbow are fixed into a whole, thus the overall weight of the elbow is lightened, and the aims of lowering the cost, saving materials and prolonging the service life are achieved.

The invention discloses a flywheel energy storage magnetic coupling transmission device which mainly comprises a housing, an inner case body, a flywheel rotor, a spindle and a magnetic coupling transmission mechanism, wherein a stator, a permanent magnet rotor and an adjustable magnet ring rotor of the magnetic coupling transmission mechanism are cylindrical; the adjustable magnet ring rotor is located between the stator and the permanent magnet rotor; a radial air gap exists between the adjustable magnet ring rotor and the stator; a radial air gap exists between the adjustable magnet ring rotor and the permanent magnet rotor; one end of an adjustable magnet ring rotor shaft is connected with the adjustable magnet ring rotor; and the other end of the adjustable magnet ring rotor shaft extends out of the housing. The device can recover braking energy of a vehicle; and compared with the traditional electric driven and mechanical flywheel energy storage systems, the device has the advantages of compact structure, small size, static sealing, small temperature rise in the case body, magnetic transmission, stepless speed change and the like.

The invention belongs to the technical field of building structure vibration attenuation, and particularly relates to a tuned mass damping device utilizing eddy current for providing damping. The tuned mass damping device comprises a conductor plate and a permanent magnet, and is characterized by also comprising a main shaft, a spring and an eccentric mass block, wherein the eccentric mass block is fixedly arranged on the main shaft, or a rotating bearing is arranged between the eccentric mass block and the main shaft, one end of the spring is connected with the eccentric mass block, the conductor plate is fixedly arranged at one side of the eccentric mass block in a direction vertical to an axle line of the main shaft, the permanent magnet is positioned between the conductor plate and the eccentric mass block and is fixedly arranged on the eccentric mass block, a gap is formed between the conductor plate and the permanent magnet, and the conductor plate, the permanent magnet, the main shaft, the spring and the eccentric mass block jointly form a group of eddy current tuned mass damping structures. The eccentric eddy current tuned mass damping device has the advantages that the structure is simple, the practicability is high, safety and reliability are realized, the cost performance is higher, the tuned mass damping device can be widely applied to structure vibration control of various high-rise and super high-rise buildings, drawn-up structures or long-span buildings, and the market application prospects are very wide.

The invention discloses a small-sized ultra-high-speed motor test loading device which comprises a base, a motor, an eddy-current disc, an exciting winding, an exciting sleeve, a support and a dynamometer load. The motor is arranged on the base and is connected with the eddy-current disc, the eddy-current disc is nested in the exciting sleeve, the eddy-current disc and the exciting sleeve are coaxially and parallelly arranged and transfer power through magnetic field coupling, the exciting sleeve is winded with the exciting winding, the exciting winding is connected with a voltage-adjustable direct-current power supply to produce exciting current, the exciting current produces an even unipolar magnetic field in the exciting sleeve, the magnetic field senses current in the rotary eddy-current disc to produce brake torque, a torque measurement system measures the brake torque, and the small-sized ultra-high-speed motor test loading device is provided with a rotation speed detection system for measuring the rotation speed of the motor or the eddy-current disc. The small-sized ultra-high-speed motor test loading device is simple in structure, small in rotational inertia, almost free of additional radial force, convenient to install and capable of reducing vibration and noise and is suitable for performance testing of small-sized high-speed motors, and a dynamometer rotor is free of friction loss.

To improve a one-way clutch incorporated into an engine of a motorcycle to eliminate the need for switching a gear to a neutral position in the case of push walk of vehicle. A one-way clutch 60 comprises a clutch inner wheel 62, a clutch outer wheel 65 coaxial with the clutch inner wheel 62, a cam surface 62b formed on the inner periphery of the clutch outer wheel 65, a roller (rolling member) 64 arranged between the clutch inner wheel 62 and the clutch outer wheel 65 and rolling on the cam surface 62b, and a compression spring (biasing member) 66 biasing in a direction of narrowing the roller 64 by pressure of the clutch inner wheel 62 and the clutch outer wheel 65 along the circumferential direction. The clutch is characterized by comprising an centrifugal weight (restricting member) 63 which restricts, in low-speed rotation, the movement of the roller 64 in the biasing direction within the range where the roller 64 can freely roll, and releases the restriction in the case of a predetermined number of rotation or more.

The invention discloses an explosion-proof and leak-proof magnetic suspension fan. The explosion-proof and leak-proof magnetic suspension fan comprises a shell, a rotor, magnetic suspension bearings, a stator, an impeller and a volute, wherein the magnetic suspension bearings and the stator are born in the shell; the rotor is arranged in the magnetic suspension bearings and the stator, and one end of the rotor stretches out of the housing and is fixedly connected with the impeller; and the impeller is arranged in the volute. The explosion-proof and leak-proof magnetic suspension fan further comprises a backflow tube and a sheath, wherein the sheath is arranged in an inner cavity of the housing, and located between the rotor and the magnetic suspension bearings and between the rotor and the stator; an open end of the sheath stretches out of the housing and is fixedly connected with the volute, and penetrates through the inner cavity of the volute; the backflow tube is arranged outside the housing, one end of the backflow tube is communicated with the sheath, and the other end of the backflow tube is communicated with the volute; a cooling liquid flow channel is arranged in the shell and located at one side of each magnetic suspension bearing and one side of the stator; the cooling liquid flow channel penetrates through the inner cavity of the shell; and a liquid inlet and a liquid outlet which penetrate through the cooling liquid flow channel are arranged in the wall of the shell. The explosion-proof and leak-proof magnetic suspension fan disclosed by the invention utilizes the advantages of high speed and high efficiency of the suspension bearings, and achieves a good cooling effect.

The invention provides an air-powered air cushion packing machine, which comprises N overhead horizontal cigarette carton conveyors, N groups of horizontal cigarette carton transverse setting mechanisms and a horizontal synchronous gathering conveyor, wherein the N groups of horizontal cigarette carton transverse setting mechanisms correspond to the N overhead horizontal cigarette carton conveyors one by one, and N is a natural number of more than or equal to 1; an air-powered air cushion vertical passage is arranged corresponding to each group of horizontal cigarette carton transverse setting mechanisms; the horizontal synchronous gathering conveyor is arranged under the air-powered air cushion vertical passage; the lower part of the air-powered air cushion vertical passage is provided with an air-tight valve; the air-powered air cushion vertical passage is a vertical passage with square cross section; and the size of the square is 1 to 5 millimeters more than that of a single edge of the bottom surface of a cigarette carton. The air-powered air cushion packing machine has the prominent advantages of high efficiency, no energy consumption, no friction loss, low noise and stable or ordered delivery.

The invention discloses a two-dimensional quick deflection reflection mirror and a working method thereof. The two-dimensional quick deflection reflection mirror is characterized by comprising a mirror supporting structure, a first flexible deflection mechanism, a second flexible deflection mechanism, a sensing driving component, a base and a driving control system; the flexible deflection mechanism is used for installing the mirror supporting structure after being combined, the sensing driving component and the driving control system are connected to be used for controlling the flexible deflection mechanisms to execute deflection motions, and the base is used for fixing the sensing driving mechanism and the flexible deflection mechanisms. The two-dimensional quick deflection reflection mirror has the advantages of being easy to assemble, compact in mechanism, high in space utilization rate, good in stability, quick in response, small in size, light in weight and high in rigidity; the range of an output deflection angle is increased, so that the reflection mirror has a large deflection range; the two-dimensional quick deflection reflection mirror is high in measurement precision and small in occupied space, can indirectly measure the deflection angle, is high in deflection angle output precision, improve the beam control precision and is high in linearity and resolution.

The invention provides an energy storage and conversion system which is applied to fixed fields such as load regulation in power grid, widn power generation and the like. Flywheel energy storage is adopted, a routine synchronous or asynchronous motor/generator is connected with a power grid, and homopolar electromagnetic transmission (HET) is adopted as stepless speed change torque change transmission equipment between a flywheel and a motor. The better scheme of the flywheel is to adopt a vertical type flexible flywheel structure or a suspension type flexible flywheel structure, and the suspension type flexible flywheel structure is especially suitable for the flywheel of large mass. The suspension type flexible flywheel structure can solve the unbalance and resonance problem when a rotor is simply supported by combination of a flywheel body and a rotating shaft as usual. An axial support permanent magnet bearing on a vertical type rotating shaft can solve the gravity support problem of the large-mass flywheel. A flexible connection multi-body flywheel body of the flywheel facilitates manufacturing and improvement of energy storage volume density. An energy input/output conversion system composed of the HET and a common motor solves the problem that a motor is large in calorific power and poor in heat radiation, cannot be limited in the aspect of transmission power, and is high in equipment power density, low in cost and high in energy conversion efficiency.

The invention discloses a chromium bronze alloy material and a preparation method thereof. The chromium bronze alloy material consists of chromium, tin, titanium, 0.006 to 0.012 percent of rare earth and 98.518 to 99.394 percent of copper. The preparation method for the chromium bronze alloy material comprises the manufacturing steps of batching, smelting, casting, extruding, stretching, straightening and finished product inspection and detection. Through the chromium bronze alloy material and the preparation method thereof, the prepared chromium bronze alloy material has good elastic recovery capability and smaller grain size; and because of the adoption of an advanced process method in the process, the quality of the chromium bronze alloy material is greatly improved, and meanwhile the service life of processing equipment is prolonged.

The invention relates to a quick-tightening device and a suitable chain unit and a blade, by means of which the saw chain and the blade can be easily attached to the main body of the chain saw and by which the saw chain can be tensioned without any problems. In the quick-tightening device a wedge is assembled on the blade of the chain saw, while a moveable clamping lever array containing a counter wedge is secured to the chassis in the region of the driveshaft. The motion sequence of the elements of the clamping lever array in the transition from the open position to the closed position is specially designed, so that the counter wedge acts on the wedge assembled on the blade and locks the blade to the chassis by means of contact pressure. At the same time, the blade is pushed by the pushing pressure in longitudinal direction away from the drive pinion, so that the saw chain is tensioned.

The invention discloses a double-line palm closing type reinforcement bar straightening mechanism which comprises a fixed bracket consisting of four palm block sliding seats. Palm pressing blocks are arranged among the palm block sliding seats; each palm pressing block comprises a double-line connected fixed palm block, a double-line connected movable palm block and single-line movable palm blocks; separation check blocks are arranged on the upper surfaces of the double-line connected fixed palm blocks; two parallel reinforcement bars respectively pass through both sides of the separation check blocks of the double-line connected fixed palm block; each double-line connected movable palm block and the corresponding single-line movable palm block respectively encircle the reinforcement bars from the upper part and both left and right sides; palm pressing block driving devices for driving the double-line connected movable palm blocks and the single-line movable palm blocks to encircle and be separated are respectively arranged on the double-line connected movable palm blocks and the single-line movable palm blocks. The double-line palm closing type reinforcement bar straightening mechanism disclosed by the invention can extrude and strengthen two reinforcement bars in a time and the efficiency is doubled; meanwhile, due to adoption of an intermittent extruding mode for strengthening the reinforcement bars, the strengthening process is rapid and effective and no frictional loss exists. The invention also provides a novel double-line palm closing type reinforcement bar straightening machine adopting the double-line palm closing type reinforcement bar straightening mechanism.

The present invention provides a dry-type shaft sealing structure of a steam compressor in a vacuum concentration device, capable of preventing leakage air from steam. The sealing structure comprises: a dry-type sealing part, in which a sealing surface is of a contact state when a rotating shaft of the steam compressor does not rotate, and the sealing surface is of a non-contact state by a film formed by draw-in air from an airframe when the rotating shaft rotates; a space for air suction, for merging leakage air from the sealing surface of the dry-type sealing part and leakage steam from a steam compression chamber where the inhalant steam is compressed; an aspirating hole, communicate with the space for the air suction; a vacuum pump, for making a state that a vacuum degree is higher than that of the inner of the airframe; a discharge pipe for air suction, connected with the aspirating hole and the vacuum pump. The leakage air and leakage steam is discharged from the space through the discharge pipe by means of the vacuum pump.

The invention discloses an oil magnetic-suspension double-stator high-efficiency motor, belonging to the technical field of clean energy and energy-saving motors. A first stator and a second stator are arranged on the inner side and the outer side of a rotor; a center and a main shaft are fixed together; and the main shaft supports the rotator to rotate through a second bearing and a third bearing. The oil magnetic-suspension double-stator high-efficiency motor is characterized in that a raised part on the front end of the shell of the rotor penetrates through the end covers of the stators and is used as a transmitting outputting shaft, and the inner wall and the outer wall of the shell of the rotor are provided with permanent magnets. The heat in the motor is discharged along with liquid through a lifting pump, and the heat is returned to the interior of the motor to circulate after flowing through a cooler to be cooled. The weight of the rotor is overcome due to the adoption of the oil magnetic-suspension cooling technology, the bearings have no friction loss and noise, the motor works constantly in the ideal controllable temperature increasing state, the maximization and the stability of the output power are ensured. The oil magnetic-suspension double-stator high-efficiency motor can be used together with an electric vehicle, a giant wind power generator, a large-scale hydroelectric generator, a diesel generators, a large-scale high-speed smelting fan and other equipment as an energy-saving motor or a high-efficiency power generator, thereby having a huge economic benefit and energy saving and environment protecting effects.

The invention discloses an eddy current axial damper. The eddy current axial damper comprises a screw, a nut, a fixed drum, an inner rotating drum and an outer rotating drum. The fixed drum sleeves the outer side of the screw. The inner rotating drum is connected with the nut and arranged between the screw and the fixed drum in a sleeving mode. Magnets are arranged on the periphery of the inner rotating drum, and a conductor pipe is arranged on the inner wall of the fixed drum. The outer rotating drum is connected with the nut and sleeves the outer side of the fixed drum. A conductor pipe is arranged on the inner wall of the outer rotating drum, and magnets are arranged on the periphery of the fixed drum. According to the eddy current axial damper, two sets of module connection are formedbetween the inner rotating drum and the fixed drum and between the outer rotating drum and the fixed drum, the sizes are not mutually affected, the parts can be independently designed, and modularizedproduction and combination are achieved. By means of multiple combination modes such as inner and outer rotation, inner rotation and outer rotation, the requirements for the damper size limitation, the damping force inertia force change mode and the heat dissipation efficiency are met. The structure comprises a movement conversion mechanism and an eddy current damping generator. The eddy currentdamping generator is free of the frictional loss, after the service life of the damper ends, only the movement conversion mechanism needs to be replaced, the eddy current damping generator can continue to be used, and therefore the life cycle cost is reduced.

The invention discloses an extruding type reinforcing steel bar automatic feeding and straightening mechanism, which comprises a support, wherein the support is fixedly provided with a connecting rod for being connected with a driving device; the driving device drives a straightening mechanism to reciprocate back and forth by virtue of the connecting rod; the support is internally provided with slide carriages, a plurality of palm pressure blocks are arranged among the slide carriages in a sliding manner, the palm pressure blocks surround a reinforcing steel bar which penetrates through the straightening mechanism, one end of each palm pressure block faces the reinforcing steel bar, the other end of each palm pressure block is connected with a camshaft, and each camshaft rotates to drive the corresponding palm pressure block to slide between the slide carriages so as to extrude or loosen the reinforcing steel bar; each camshaft is fixedly provided with a gear, the support is provided with rack slide block, each rack slide block is internally provided with a rack in a sliding manner, the racks are meshed with the gears on the camshafts, and the camshafts are driven to rotate when the racks and the gears generate relative motion. The straightening mechanism adopts extruding type straightening, friction loss of components can be effectively reduced, the palm pressure block action is automatically controlled while the reinforcing steel bar is fed, and the extruding type straightening and feeding of the reinforcing steel bar is completed.