38results about How to "Realize forward and reverse control" patented technology

The present invention provides a forward and reverse control circuit of an electric motor, in which a plurality of motors (31-36) for opening and closing bodies are connected to a plurality of motor groups (the first motor group 30-1, the second motor group 30-2 ) are connected to the relay circuits (41) and (42) through the second fuses (21-24) with a current capacity value smaller than that of the first fuse (10), and the current capacity value is lower than that of the first fuse ( 10) Small wiring between the second fuses (21-24) connects each second fuse (21-24) and each switch body opening and closing motor (31-36). Therefore, it is possible to realize a forward and reverse control circuit of a motor that can be used in an electric door lock system of an automobile at low cost.

The technology provides a forward and reverse speed adjustable handle for an electric vehicle. The forward and reverse speed adjustable handle can be turned in both forward and reverse directions to control the forward or reverse turning of an electric vehicle. The forward and reverse speed adjustable handle has the advantages of simple structure, no back-up switch, convenience in operation and high reliability, and the cost is equivalent to that of an ordinary speed regulating handle. The forward and reverse speed adjustable handle comprises a fixed part consisting of a handle stem and a handle seat, and a turning handle, wherein a left turning spring and a right turning spring are arranged between the fixed part and the turning handle; the left turning spring enables the turning handle to counterclockwise turn relative to the handle stem, and the right turning spring enables the turning handle to clockwise turn relative to the handle stem; the turning handle is in a reset position under the combined action of the left turning spring and the right turning spring. When an external force is applied to the turning handle, the turning handle can clockwise or counterclockwise turn from the reset position; a Hall sensor and an arc-shaped permanent magnet are respectively arranged on the turning handle and the fixed part oppositely but without contact; when the turning handle is turned, the Hall sensor moves relative to the arc-shaped permanent magnet, senses different positions of the arc-shaped permanent magnet and outputs relevant different signals.

The invention discloses an electromechanical device, and particularly relates to a device, used on a vehicle, of adjusting forward and reverse rotation of a condensing fan. The device comprises relays, a switch and a fan, wherein the relays comprise a time relay KJ1 and two relays KJ2 and JK3; a switch and the like are arranged in each relay; one of the two relays KJ2 and KJ3 is normally open and the other one of the two relays KJ2 and KJ3 is normally closed; and the forward and reverse rotation time is adjusted through time setting of the time relay JK1 to control the action of the fan. The device has the advantages of improving the radiating effect of a condenser and reducing the manual cleaning frequency. By using the condensing fan with excellent blowing and air suction effects and through control circuit design, forward and reverse rotation control of the condensing fan is realized to blow weeds and dust out. The device can be widely applied to mechanical vehicles operating outdoors.

The invention discloses a power system of an internal combustion engine with slide blocks combined with a cam roller, belongs to the field of internal combustion engines and relates to the power system of the internal combustion engine with slide blocks combined with the cam roller. In the power system, a cam mechanism is formed by means of the cam roller and a plurality of slide block driven members, and a plurality of peripherally distributed sealing work chambers are formed with a rotor cabin and an end portion member; these change in volume along with rotation of the cam roller and are matched with an air valve to finish four processes: air suction, compression, acting and exhausting of Otto cycle so as to directly convert chemical energy generated by gas combustion into mechanical energy of the roller in a form of rotation of a fixed shaft. High pressure gas directly pushes the fixed shaft of the rotor to rotate and outputs power, so that the power system is simple in structure and large in parameter adjustable range. Controlled by an additional slide block escaping, the rotor is easily flexibly controlled, and even can rotate forward and backward. Compared with a power system of a piston internal combustion engine and a power system of a triangular rotor internal combustion engine, the power system disclosed by the invention has many prominent advantages.

The invention relates to a building block type stator disc, a permanent magnet motor and a speed control method of the permanent magnet motor. The building block type stator disc comprises a pluralityof stator teeth. Windings which are parallel to the direction of the rotor disc are wound on each stator tooth. An inner fixing ring frame and an outer fixing ring frame are sleeved inside and outside the stator disc. The plurality of stator teeth are arranged between the inner fixing ring frame and the outer fixing ring frame to form an annular shape. One end of each stator tooth is fixedly connected to the inner fixing ring frame through a first connecting piece, and the other end of each stator tooth is fixedly connected to the outer fixing ring frame through a second connecting piece. Thepermanent magnet motor is simple in structure and convenient to control. The field of the permanent magnet motor does not need to be converted into a rotating magnetic field. Different from the control mode of a traditional permanent magnet motor, a motor can be driven to rotate through continuously changing a coil on different magnetic poles. Therefore, the cost is low and the maintenance is convenient.

Hydraulic equipment for dismounting and mounting a bucket tooth pin shaft comprises a motor, a power switch, an oil drum, a bidirectional gear pump, a shell, an oil cylinder, an oil can, a high-pressure oil pipe, an overflow valve and an oil way integration distribution block. The oil can is mounted at the upper end of the oil drum; one side of the oil way integration distribution block is mounted on one side of the oil drum, and the motor is mounted on the other side of the oil way integration distribution block; the bidirectional gear pump is mounted on one side of the oil way integration distribution block, and a power input shaft of the bidirectional gear pump and a power output shaft of the motor are mounted together; the oil drum and the oil cylinder are mounted together; the overflow valve is mounted on the oil way integration distribution block; a lower oil pipe of the oil cylinder and a lower oil inlet and outlet pipe of the oil way integration distribution block are mounted together through an oil pipe; the shell is installed on the outer side of the motor, and the power switch is installed on the shell. The equipment is small and exquisite in structure and convenient to use, a piston of the oil cylinder can move forwards to eject out of or into the bucket tooth pin shaft and move backwards to return to the initial state only by controlling a power switch, so that the bucket tooth dismounting and mounting efficiency is improved.

The invention discloses a petroleum geological prospecting drill pipe device. The petroleum geological prospecting drill pipe device structurally comprises a drill pipe device body, a prospecting head, an external reinforcing rod, a base, a geological prospecting machine body, connecting frames, fixing rods, an upper fixing frame and a rocking rod. The bottom of the geological prospecting machinebody is fixedly connected with the top of the base, the upper fixing frame is arranged at the top of the geological prospecting machine body, and the connecting frames are arranged to be in a rectangular shape and fixed to the front side of the fixing frame; and the fixing rods are parallel to each other, penetrate through the connecting frames and are connected to the interior of the top side ofthe geological prospecting machine body, and the right side of the upper fixing frame is in mechanical connection with the left side of the prospecting head. According to the petroleum geological prospecting drill pipe device, rapid rising and falling can be conducted through motor transmission, meanwhile stable output power is provided by a motor, the degree of outside interference can be reduced, the stability of equipment operation can be ensured, and meanwhile the impact force borne by the petroleum geological prospecting drill pipe device is reduced by a coupler.

The invention discloses a motor control circuit, a motor control system and a motor driving device. The motor control circuit comprises a first control unit and a second control unit, the first control unit and the second control unit are used for controlling a motor to rotate forwards or reversely, and the second control unit is further used for controlling the rotating speed of the motor. One end of the first control unit is connected with a power supply, the other end of the first control unit is connected with the motor, one end of the second control unit is connected with the motor, and the other end of the second control unit is grounded; or one end of the second control unit is connected with the power supply, the other end of the second control unit is connected with the motor, one end of the first control unit is connected with the motor, and the other end of the first control unit is grounded. The motor control circuit can realize positive and negative rotation control and rotating speed control of the motor, the control mode is simple, convenient and practical, and miniaturization design of products is facilitated.

The invention relates to underground engineering Internet of Things equipment based on LORA. The equipment comprises a main control module, an LORA communication module, a peripheral auxiliary power supply module and a mother board, wherein the main control module is in interactive connection with the LORA communication module through the mother board, the peripheral auxiliary power supply moduleis also connected with the main control module through the mother board, the equipment further comprises an equipment control module and an equipment state acquisition module, the equipment control module is composed of an interface unit, a forward and reverse rotation controller and an alternating current contactor, the input end of the interface unit is connected with the main control module through the mother board, and the forward and reverse rotation controller and the alternating current contactor are respectively connected with the output end of the interface unit. According to the invention, various alternating-current electric devices can be controlled, connection with a controlled device is convenient, no additional component is needed, connection with a power supply terminal ofa controlled device can be directly realized, wireless Internet of Things establishment can be realized without laying cables, and the equipment has the characteristics of large signal coverage range,strong wall penetrating capability, low power consumption and the like when used in underground engineering.

The invention relates to a corn transmitter, which is simple in structure, convenient in use, saving labor and improved in labor efficiency, which comprises generator installed on the chassis, the said generator connected to the triangle belt with the pulley, shaft of the pulley connecting with a horizontal bar, a pair of iron ring with pulling ropes on the horizontal bar, pulling rope of an iron ring sticking out of the land, the other pulling rope sticking out of the iron ring and the generator connected with the control circuit.

The invention relates to the field of high voltage control, and specifically relates to a high-voltage switch cabinet. A three-phase disconnecting link comprising two three-phase moving contacts is arranged in a control cabinet; three phases of a three-phase input terminal are connected with the two moving contacts through different connection modes; and a motor is controlled to rotate forwardly when one three-phase moving contact is closed, and the motor is controlled to rotate reversely when the other three-phase moving contact is closed, so that the forward and reverse rotation of the motoris realized. The high-voltage switch cabinet provided by the invention is simple in structure and easy to operate, so that the motor can be smoothly switched between forward rotation and reverse rotation, and the forward and reverse rotation control of the motor is effectively realized.