45results about How to "Reduce rotation frequency" patented technology

To provide a wafer cleaning method capable of restricting breakage of fine structures disposed on a wafer, and a spin cleaning apparatus enabling such cleaning. The spin cleaning apparatus injects a cleaning liquid on a wafer surface while moving a nozzle, and at the same time, with an ultrasonic wave generated inside the nozzle, irradiates a cleaning liquid collision spot, thereby cleaning the wafer surface. The above apparatus includes at least one of the following functions: (1) a function of varying the rotation frequency of the wafer; (2) a function of varying the traveling speed of the nozzle in the direction parallel to the wafer; (3) a function of varying the output of the ultrasonic wave; and (4) a function of varying the distance between the nozzle and the cleaning liquid collision spot, all corresponding to the position of the cleaning liquid collision spot on the wafer.

An apparatus for providing percussion action in a rotary power tool having a rotary output shaft, the apparatus comprising at least one moveable mass adapted to have a component of movement parallel to the axis of the rotary output shaft to cause impacts to be applied to a working member of the tool; and a device for intermittently converting rotary movement of the rotary output shaft into movement of at least one the moveable mass to cause the impacts to be applied to the working member.

The invention relates to a vertical force measurement bridge bearing and a force measuring method thereof. Through measurement and whole demarcation of local stress, the whole stress of the bearing is determined. The bridge bearing is simple in structure, size increase and weight increase are small, force measurement is reliable, the vertical force measurement function of the bridge bearing can be realized, the vertical force measurement difficult problem of the bearing is solved, and technical support is provided for bridge monitoring.

The invention discloses an auxiliary brick paving device used for building construction. The auxiliary brick paving device comprises a base and wheels on the base, brake pads are installed on the wheels, a platform plate is arranged above the base, the platform plate is fixedly connected with the base through a supporting plate, and an installation block is fixedly connected with the side, away from the supporting plate, of the platform plate. A screw is rotationally connected between the installation block and the supporting plate, the screw is sleeved with a threaded block through a thread,the threaded block is connected with the supporting plate and the installation block through a guide mechanism, the installation block is fixedly connected with a servo motor which is connected with the screw through a reducing mechanism, the reducing mechanism comprises a first rotary shaft which is fixedly installed at the output end of the servo motor, and a first gear is fixedly installed on the first rotary shaft. The auxiliary brick paving device is compact in structure, simple in operation, physical output of workers is helped to be reduced, and the paving efficiency is effectively improved.

A fluidic module includes first and second measuring chambers, first and second fluid inlet channels connected to the first and second measuring chambers, respectively, and first and second fluid outlet channels connected to the first and second measuring chambers, respectively. Upon rotation of the fluidic module about a center of rotation, liquids are centrifugally driven into the first and second measuring chambers via the first and second fluid inlet channels, respectively, so that compressible media previously present within the first and second measuring chambers are compressed by the liquids driven into the first and second measuring chambers, respectively. Upon a reduction of the rotational frequency and upon an expansion, resulting therefrom, of the compressible media, the liquids present within the first and second measuring chambers are driven out of same via the first and second fluid outlet channels, respectively.

An x-ray computed tomography apparatus has one anode ring in a vacuum housing surrounding an examination volume, wherein a focus of an x-ray source revolves on the anode ring to expose the examination volume with an x-ray beam from different directions, and a detector system arranged on a rotating frame that can rotate around a system axis. The detector system serves to detect the x-ray radiation exiting from the examination volume, wherein the detector system and the focus can rotate around the system axis synchronously and in the same rotation direction with a rotation angle offset by 180°. The apparatus also includes a computer to process the measurement values acquired by the detector system. The anode ring can be driven such that it rotates around the system axis, and the rotation direction of the anode ring and the rotation direction of the focus around the system axis are opposite while a rotation of the focus around the system axis ensues.

The invention discloses a thin film winding machine which comprises a winding machine rack. The rack comprises a rack base and rack walls erected on the two sides of the rack base. The thin film winding machine further comprises a winding drum erected between the rack walls. The winding drum is rotationally connected to the rack walls on the two sides through a rotary shaft. The winding drum is connected with a winding drum drive device. The drive device comprises a chain wheel set connected with the rotary shaft and a motor used for driving the chain wheel set to rotate. A movable pressure roller is arranged on the outer side of the winding drum and is parallel to the winding drum. The pressure roller makes contact with thin film on the winding drum and is connected with an automatic regulating device used for keeping the pressure roller tightly pressing the thin film at constant pressure. The winding drum drive device and the automatic regulating device are electrically connected toa control cabinet at one side of the rack walls. The thin film winding machine provided by the invention is orderly in thin film winding and high in winding efficiency.

The invention relates to the technical field of agricultural equipment, and discloses a crop fertilizing device capable of adjusting the discharge amount by controlling the opening and closing frequency. The crop fertilizing device comprises a first gear. A clamping rod is movably connected to the outer side of the first gear. The first gear rotates to enable a second cone pulley to rotate intermittently by 180 degrees, and the clamping rod moves upwards to enable the first gear to be meshed with a second rotating plate. The rotating frequency of the second cone pulley is reduced as the sizesof a first rotating plate and the second rotating plate are different, and subsequent control of the fertilizer discharge amount is benefited, so that the discharge amount is regulated, and linkage between structures is improved. A fifth rotating plate rotates, a long shaft of the fifth rotating plate is close to a left protruded column of a moving rod, the fifth rotating plate pushes the moving rod to move leftwards, a stop plate is enabled to be away from a discharge outlet, the left protruded column, away from the moving rod, of the long shaft of the fifth rotating plate is close to a rightprotruded column of the fifth rotating plate, the moving rod is driven to move rightwards, and the stop plate moves rightwards and upwards to be close to the discharge outlet. The position of the stop plate is controlled to control discharge conditions, automatic discharge is achieved, and the crop fertilizing device is convenient and rapid to operate.

The invention discloses an automobile tire abrasion resistance testing device, and belongs to the technical field of automobile tire testing, the automobile tire abrasion resistance testing device comprises a conveying device, a speed regulation device, a tire clamping device, an abrasion resistance testing device and a discharging table, the conveying device is arranged on the ground, and the speed regulation device is arranged on the ground and located over the conveying device; the tire clamping device is installed at the bottom of the speed adjusting device, the abrasion resistance testing device is installed on one side of the conveying device, and the discharging table is installed at one end of the conveying device. A batch of casual inspection tires are sequentially conveyed to the position below the tire clamping device through the conveying device, the tire clamping device fixes the to-be-detected tires, the wear resistance testing device moves to the two sides of the tires, then the tires are controlled by the speed adjusting device to rotate, and the wear resistance of the tires is detected. The rotating speed of the tires of different sizes is adjusted through the speed adjusting device, the tires are conveyed to the discharging table through the conveying device after testing is completed, and detection personnel measure the outer ring diameter change of the tires so as to judge whether the abrasion resistance is qualified or not.

The wind generator includes a support part, a housing connected to an upper portion of the support part, the housing having an inner space, a blade part connected to one side of the housing, the blade part, an electricity generating part seated in the inner space of the housing, a flywheel, and a tail part. The flywheel includes a shaft rotating together with the blade part, a rotor coupled to the shaft, the rotor including at least one permanent magnet along an outer circumferential surface thereof, at least one coil part disposed outside in a radial direction of the rotor and around which a trigger coil is wound, the at least one coil generating magnetic fields when current is supplied to the trigger coil, and a circuit part supplying pulse-type current to trigger coil when the permanent magnet passes through a center of the trigger coil.

The invention relates to a method and arrangement having an electric machine, comprising a stator (4) and a rotor (1) and an infrared temperature sensor, wherein the detection field of the infrared temperature sensor is directed at an outer surface of the rotor (1). The infrared temperature sensor is a thermopile (6) for radiometrically contactlessly detecting a temperature of the rotor (1), the thermopile being arranged in a slot of the stator (4) and being compatible with standard slot-sealing-wedge components of the electric machine with regard to assembly, and thus enables the operational monitoring of the thermal state of an electric machine in a novel manner, such that adapted power states can be achieved.

The invention discloses coating equipment for machining a part of a new energy automobile. The equipment can realize automatic positioning of a workpiece, can realize automatic adjustment of the position and posture of the workpiece, and realizes automatic clamping and positioning, and a spraying end of a spraying head at least comprises a plurality of spraying surfaces, the spraying surfaces are arranged in a non-parallel mode, and each spraying surface is at least provided with one independently controlled spraying nozzle. By arranging the spraying nozzles on the spraying surfaces, the corresponding spraying nozzles can be controlled to conduct spraying according to the positions of the spraying nozzles and the positions of spraying workpieces, so that the spraying efficiency is effectively improved; and therefore, the rotating frequency of the nozzle is reduced, and the spraying effect is improved.

The invention provides a thread take-up mechanism used for a sewing machine and the sewing machine. The thread take-up mechanism includes a thread take-up rod, a connecting rod assembly and a fixedlyarranged driving part; one end of the thread take-up rod is rotatably arranged, the other end of the thread take-up rod is provided with a thread through hole, one end of the connecting rod assembly is connected with the driving part, the other end of the connecting rod assembly is connected with the thread take-up rod, and the driving part drives the connecting rod assembly to swing in a reciprocating mode. The connecting rod assembly has three states, the connecting rod assembly in the first state and the connecting rod assembly in the second state are symmetrically arranged on the two sidesof the connecting rod assembly in the third state, the connecting rod assembly is in a straight line state in the third state, the thread through hole of the thread take-up rod is located at the highest point in the first state and the second state, and the thread through hole of the thread take-up rod is located at the lowest point in the third state. According to the mechanism and the sewing machine, the driving part rotates once, the thread through hole of the thread take-up rod can be at the highest point twice, and the rotation frequency of the driving part is reduced.

The invention belongs to the technical field of fertilizers with special fertilizer efficiency, and discloses an organic fertilizer for livestock leftovers fermented by biological carbon. The weight and mass parts of the raw materials of the organic fertilizer include 50-80 parts of livestock leftovers, 20-30 parts of biochar, 3-6 parts of microbial agents and 30-40 parts of water. The livestock leftovers are firstly crushed during production and microbial agents, water and crushed livestock leftovers are placed in a fermentation barrel for fermentation; the biochar is added into the fermentation barrel after 3 days of fermentation for continuing fermentation; after 2 days, the materials in the fermentation barrel are stirred by using a stirring rod to realize uniform mixing and decomposition of the raw materials; a crushing rod is arranged on the stirring rod to crush the biochar; after 2 days, the residue in the fermentation barrel is filtered and the liquid is taken out to form a liquid organic fertilizer. The problems that the existing liquid organic fertilizer has less carbon content and microorganisms and has limited promotion effect on plant growth and soil improvement effect can be solved.

The invention discloses an electric propulsion angular momentum unloading method taking thruster arc section losses into consideration. The method is suitable for earth synchronous orbit electric propulsion satellites conically arranged, a vector adjusting mechanism adjusting electric thrusters is used for generating the moment of momentum, and angular momentum unloading of an on-satellite angular momentum exchange executing mechanism is achieved. Firstly, under the situation that any unloading number of days is given, and ignition combinations (a normal or fault mode) are kept at any positions of the electric thrusters on the diagonal line, a common and simplified electric propulsion angular momentum unloading dynamics model taking the arc section losses into consideration is established; then, method establishing conditions and an electric thruster deflection angle obtaining method are given; and finally, a treatment manner under the situation of the overload of angular momentum unloading is given. According to the method, through proper simplification on the dynamics model, the calculated amount of the unloading method is reduced, the arc section losses of electric thruster ignition are taken into consideration, the angular momentum unloading precision is improved, and an effective method is provided for in-orbit angular momentum unloading of the electric thrusters.