SU130092A1 - Remote reversible electric drive - Google Patents

Description

Musto ihees lisoopeTcnno refers to remote rsv (auxiliary electric devices that contain a paragraph, a device with a device for sending wiring signals, communication kiosks, an electric motor, and an iotacic system for working out a yellow electric motor (i), and a rat; :; electromotor (h

The proposed electric iriod is different from the known themes, it has a reversible distributor installed, the switchable elements of which the nodes to the ccKiuni taps are working on its ioteiniometp, and the switch sys of the two signs are received on the communication channels.

On FC | -. 1 is a picture of the irincinnial scheme of the proposed electrical route; in fig. 2 shows an embodiment of testing the ONI potentiometer of the proposed electric drive.

The proposed danstsiony reversible electric drive consists of a nuvkta unravlepp PU (with control buttons, a key and a switch or with a comader), a communication channel of the CS, a reversing distributor of the RSHI with electromagnets ERSHI-V and ERSHI-N (l wallpapers. ), working out the i-and-stepping meter P with the adjustment nlawi engine and finding out the number of exact stops of the electric drive, the polarized neutral relay P // I, the reversing magnetic actuator (B and 11) and the electric motor with the braking electromagnet Volume 37. A two-way shaft (rigidly through a reducer) or a bad means) is associated with a controllable mechanism and a potentiometer engine / 7.

In the case of control of a remote reversible electric drive but the radio, the electromagnets ERSHI-B and ERSHI-N are powered through the contacts of the intermediate relays connected at the output of the two frequency signals. In this case, the transmission of commands over the radio unit 11ts with two-frequency or one high frequency radio. modulated single two NO 130092-2 m lower. Intermediate relays can also be used to control the drive over a long communication channel.

The adjustment by the electric drive is performed by supplying from the control point the appropriate number of pulses of any of the two signs. In this case, the reversing distributor moves along a predetermined number and indication of pulses of the lamella and the RNP relay is powered by the voltage between the point of potentiometer P connected to the step finder specified by the measuring rod and the potentiometer motor. The RNP relay switches the corresponding magnetic starter B (“forward” or H (“backward)” and, through it, motor D of the actuator to the desired direction. After the engine performs the specified movement n moves the slider of the potentiometer P to the point connected to the given distributor lamellar, the voltage on the RNP relay disappears and the relay switches off, turning off the engine D. The latter can also be turned off using limit switches KV-V and K.V- H at the approaching potentiometer to the extreme positions. The motor D can be alternating or direct current of any power.

The remote reversible electric drive can be used to control the electric drive with step speed control and to set any speed of this drive. For this, the remote reversing electric actuator is connected to the shaft of the local electric drive controller. In this case, for the zero blocking and emergency shutdowns of the controlled drive, two voltages are used and safety switches in the transmission circuit and in addition to the additional command signal.

In order to provide greater stop accuracy and the absence of significant mismatches with large overloads of the RNP relay, the option of using the potentiometer, shown in FIG. 2. The basement element PE of this working potentiometer, moving along the fixed brushes U, is provided with two metal arcuate contacts between which resistance is located.

In the case of using a distributive reversing electric drive as a multi-running remote actuator, as well as for greater accuracy of operation, two or more potentiometers are used instead of one working potentiometer for coarse n precision testing.

Subject invention

1. Remote reversing electric drive containing a control point equipped with a device for sending control signals, communication channels, an electric motor, a potentiometer for working out the electric motor's position, a polarized relay and a motor starting and stopping device so that, in order to reduce the number of communication channels, a reversing valve is installed, the switchable elements of which are connected to the taps of sections of the working potentiometer, and the switching devices of the distributor receive command signals over communication channels.

2. An electric actuator according to claim 1, characterized in that the movable element of the working potentiometer moves along fixed contact brushes and is provided with two metal arcuate contacts between which the resistance is located.