10 results about "Centrifugal switch" patented technology

The invention discloses a centrifugal switch vibration signal acquisition and analysis method, and relates to the technical field of centrifugal switch testing, and the method comprises the steps: designing a vibration signal acquisition circuit frame which comprises a vibration sensor, a signal conditioning circuit, a band-pass filter, a high-speed data acquisition circuit and data processing software; establishing a signal conditioning circuit, wherein the signal conditioning circuit comprises a constant current source module, a signal blocking module, a buffering and amplifying module, a direct current bias level adjusting module and a low-pass filtering module; building a band-pass filter, and using an active second-order low-pass filter and an active second-order high-pass filter to improve the bandwidth of the band-pass filter; a high-speed data acquisition circuit is established, and a high-precision AD sampling chip is adopted to acquire data; analyzing the collected data through data processing software by using a wavelet transformation algorithm and a sliding window standard deviation algorithm to obtain a vibration signal starting moment; when the vibration signals are collected, the precision is high, and the vibration time is accurately judged.

The invention discloses a clothes dryer motor reverse and forward rotation control method and a clothes dryer, and relates to the technical field of clothes dryers, the clothes dryer motor reverse and forward rotation control method comprises a main winding, an auxiliary winding, a controller, a first relay, a second relay and a centrifugal switch, the main winding and a power source are connected in series, and the first relay, the auxiliary winding, the first relay, the centrifugal switch and the power source are electrically connected. And the controller is used for controlling the on-off of the first relay and the second relay so as to realize the exchange between the head end and the tail end of the secondary winding. Only the auxiliary winding column is always used as the starting winding, strict requirements for consistency of parameters of the main winding and the auxiliary winding in the prior art are not needed, the specification of the main winding can be flexibly matched, the quality control difficulty in the production process is reduced, and the production efficiency and the yield of the motor are improved.

The invention relates to a mandrel structure for centrifugal switch testing and a testing method thereof, and aims to solve the technical problems that existing similar products are difficult to be used for rotating speed testing of a multi-contact centrifugal switch, the intelligent degree is low, big data analysis and processing capacity of a model is lacked, and a sensor and a camera are used cooperatively. A body of the structure is a plugging mandrel, a vibration sensor and an acoustic sensor are arranged at the plugging mandrel, a movable block is arranged in a movable groove of the plugging mandrel, one end of the movable block is hinged in the movable groove, and the other end of the movable block is warped outwards through a spring and extends out; the key point is that a hinge seat and a wrench seat are symmetrically arranged on two sides of the outer diameter of the machine body below the plugging mandrel, one end of the wrench rod is hinged and fixed on the hinge seat to rotate, the other end of the wrench rod is placed on the wrench seat when the wrench rod is reset after rotation, and a wiring terminal is fixedly arranged on the outer diameter of the wrench rod. One end of the middle of the inner side of the positive and negative wiring of the wiring terminal is higher than the wrench rod and is provided with a positioning column; and the wiring terminal is connected with an on-off switch in the machine body through a wire.

This document discloses a frisbee and its operating method. The frisbee may include an LED light strip mounted around its edge and a controller for automatically controlling the operation of the LED light strip. A centrifugal switch can be used to control the LED light strip based on the frisbee being thrown, spinning in the air, and / or flying. Players can adjust the color, intensity, and / or display mode of the LED light strip to enhance its appeal during play. This frisbee is suitable for both recreational use and sports activities. The frisbee is designed for good impact resistance and water resistance, allowing it to float on water, is easy to hold, and is safe for the player. The LED light strip may include multiple LEDs, including but not limited to three LEDs, to achieve, for example, an attractive flight lighting effect, or may include 3000 or more LEDs to achieve, for example, ultra-high brightness.

The utility model relates to a rapid plugging mandrel for centrifugal switch testing, and aims to solve the technical problems that the pressing force of a testing mandrel of a conventional similar centrifugal switch product is difficult to adjust, the tightness is easy to change after repeated plugging operation, and the best state is difficult to reach. Through holes which are arranged at equal intervals are formed in an upper rod body of a core rod on the inner side of an upper ring opening groove of a positioning ring of the quick plugging mandrel, and the exposed parts of inner movable blocks in the through holes are higher than the outer diameter of the core rod; the core rod is characterized in that a cylindrical hole is formed in a rod body of the core rod, the elastic body is arranged in the cylindrical hole of the core rod, a rear gasket and a front gasket are arranged at the two ends of the elastic body in the cylindrical hole respectively, and a rear adjusting screw is arranged in a small screw hole, communicated with a flange of the rod body, of the bottom of the cylindrical hole at the rear gasket. A front adjusting screw is arranged in a hole opening of the cylindrical hole in the front gasket, an inner hexagonal hole is formed in the top of the front adjusting screw, the elastic body is cylindrical sponge silica gel, and the end of the rod body of the core rod and the inclined face of the outer diameter of the movable block incline correspondingly.

The utility model is suitable for the technical field of motor starters, and provides a shield pump single-phase motor silicon controlled rectifier starter module, which comprises a thyristor starter electrically connected with a shield pump single-phase motor. A starting winding and an operation winding which are connected in parallel are arranged in the shielding pump single-phase motor. The starting winding is connected in series with a power output resistor; the thyristor starter comprises a silicon controlled rectifier, a bimetallic electrostriction blade delay switch and a heating resistance wire; compared with traditional resistor split-phase starting, capacitor starting, centrifugal switch starting and the like, the device has the advantages that the size is smaller, the stability is higher, the starting torque is larger, the device is not limited by temperature, and the starting speed is higher. A single-phase motor of the submerged shield pump is broken through, and the submerged shield pump can be efficiently started and operated without using a capacitor, a centrifugal switch or a PTC (Positive Temperature Coefficient) starter and other devices traditionally.

A centrifugally activated electronic device without an external switch. The electronic device includes an activation circuit, a power source, and electronic components sealed within a housing. The activation circuit includes a pair of centrifugal switches on opposite sides of the housing, which are closed by rapidly rotating the device housing, to complete the activation circuit and thereby turn on at least one of the electronic components. The electronic components include a power switch component that can be turned on by energizing the activation circuit and turned off manually via a powered, buttonless user interface, such as a graphical touch screen, and / or automatically when the electronic components detect a shutoff condition.

The present application relates to the technical field of high-speed shaft sealing of wind power gear box, and particularly relates to a wind power gear box high-speed shaft non-contact zero-leakage combined sealing device for sealing the gap between the high-speed shaft in the wind power gear box and the high-speed shaft end cover of the gear box. The sealing device comprises a sealing sleeve assembly, a centrifugal switch assembly, a magnetic fluid sealing assembly, an overflow valve assembly and a gas guide pressure maintaining assembly. The sealing sleeve assembly and the centrifugal switch assembly form a gap seal, the sealing sleeve assembly, the gas guide pressure maintaining assembly and the magnetic fluid sealing assembly jointly form an air pressure seal, the magnetic fluid sealing assembly forms a magnetic fluid seal, and the gap seal, the air pressure seal and the magnetic fluid seal jointly seal the high-speed shaft in the wind power gear box and the outer end cover through the synergistic effect. Meanwhile, the overflow valve assembly maintains the pressure of the pressure maintaining ring cavity in the gas guide pressure maintaining assembly, and the lubricating oil leaked into the pressure maintaining ring cavity is discharged into the gear box through the overflow valve assembly.

The utility model provides a double-throw double-contact centrifugal switch for a single-phase motor, and relates to the technical field of motors. Comprising a mounting bottom plate, a U-shaped opening end is provided with a first movable contact elastic sheet and a second movable contact elastic sheet, a groove bottom is provided with a first static contact fixing sheet and a second static contact fixing sheet, a first movable contact limiting frame and a third static contact fixing sheet are arranged between the two sides of the first static contact fixing sheet and the two sides of the second static contact fixing sheet, and a first static contact and a second static contact are mounted on a fixing sheet. The first movable contact elastic piece and the second movable contact elastic piece are both provided with hemispherical sliding points to be in sliding connection with a centrifugal mechanism of the centrifuge, the inner side of the first movable contact elastic piece is connected with a first movable contact, the inner side of the second movable contact elastic piece is connected with a second movable contact, and the second movable contact is arranged between the first static contact and the third static contact and can be switched between the first static contact and the third static contact. According to the utility model, the three groups of conductive polar plates are controlled to be connected in series and in parallel through the action of the contacts on the centrifugal switch, the starting capacitance and operation capacitance requirements of the motor are effectively switched, and the control mode is simple, convenient and reliable.

The application relates to the technical field of intelligent production control, and particularly relates to a powder spraying method, a system and a medium for the surface of an elongated pipe, the method comprising the following steps: placing a pretreated elongated pipe on a workbench containing multiple components, performing electrostatic spraying by using a spray gun, adjusting powder feeding, dynamically adjusting a flow channel angle according to a parameter combination, and combining speed induction to control spraying uniformity. The technical problems that a dynamic parameter matching mechanism for different pipe diameters and wall thicknesses is lacked, airflow changes in the internal space of the elongated pipe are difficult to deal with, and powder is prone to uneven distribution in the pipe are solved, technical effects that the coating thickness deviation is controlled, the spiral angle of the flow channel is dynamically adjusted according to the friction torque, the speed fluctuation is detected in real time by using a piezoelectric centrifugal switch, the powder distribution in the pipe is automatically triggered by triggering the spray gun displacement compensation and the powder feeding amount adjustment, and the processing efficiency is improved on the basis of ensuring the powder spraying quality of the surface of the elongated pipe are achieved.