SU699629A1 - Dc motor of low-speed rotary motion - Google Patents

Description

I

The invention relates to electric motors and relates to electric motors of direct current with slow rotary motion:

DC motors are known with a slow rotational movement of the output shaft, based on the principle of moving the center of gravity by changing the mass of the electrodes of the electrolytic element (electrolytic pump) during the passage of direct current through the electrolyte {and 2.

. The relatively low torque developed on the power shaft, the inability to work, for example, under zero gravity conditions and with a vertical position of the axis of rotation of the shaft, constitute the error of these engines.

A DC electric motor of slow rotary motion is known, comprising a housing, a rotor with an output shaft, a power cell in the form of an electrolytic pump, and a pressure-to-displacement device.

The pressure-to-displacement device in this engine is made in

a cylinder with a piston, the rod of which is engaged with the gear wheel of the power take-off shaft through a toothed rack. Such engine designs are capable of developing relatively large torques on the power shaft, however, due to the reciprocating movement of the piston, the output shaft has a limited number of revolutions in one direction, which significantly reduces the scope of application of the engines. In piston structures of these engines, the weak link is the sealing of the gap between the surfaces of the rod and the cylinder body, as a result of which liquid cathode (working fluid) may leak. If we consider that as a liquid cathode

if mercury is applied, its leakage and evaporation leads to environmental toxicity. The aim of the invention is to expand the scope and eliminate the possibility of leakage of the working fluid.

Claims (3)

This is achieved by the fact that in a direct current motor of slow rotary motion, comprising a housing, a rotor with an output shaft, a power element in the form of an electrolytic pump, and a pressure-to-displacement pressure transformer, ycTpoHCTEiO converting pressure to displacement is designed as bellows chambers, equipped with bottom stops, and in the case there is an annular cavity in which slepfon chambers and stop holders are located. The latter are made in the form of electromagnets with arcuate poles mounted flush with the walls of the annular cavity of the housing. FIG. 1 shows the engine, cross section; in fig. 2 - the same longitudinal section. The engine includes a housing 1 with an annular toroidal cavity 2, a shaft 3 with a rotor 4 fixed on it. Electrolytic pumps 5 are mounted in the through windows of the rotor to move the working fluid 6, such as mercury, with the passage of electric current. In the pump casing there are power lattices 7, diaphragms 8i mounted on the lattices, electrolyte 9, for example, mercuric oxide perchlorate solution, On the inner side of the annular cavity of the motor housing, a through groove is made through which the comb and the levers of the iO rotor are included. On one side, the bellows chambers i with stops 12 are reinforced on the levers. The chambers are connected by channels to the corresponding cavities of the pumps. The stop pins are electromagnets containing solenoids 13 and arcuate poles 14. Saaenoids, like electrodes 15 and 16 of the electrolytic pump, are connected to the current distributor 17 The engine operates as follows. When power is applied, the electrodes 15 and 16 of the electrolytic pump 5, as a result of electrolysis, transfer of the working fluid from one pump cavity to another begins. The direction of transfer depends on the polarity of the feed. As a result, the pressure of the working fluid in one cavity of the pump falls, and in the other increases. A change in pressure causes one sylphonic chamber 1 to expand, and the other, paired with it, to compress. In this case, the solenoid 13, also connected to the current source, with its poles 14 fixes the stop 125 of the expanding chamber. The solenoid of the compressive chamber is at this time de-energized, and it freely moves in the annular cavity 2 along its axis. The movement of the expanding chamber is transmitted through the lever 10 and the rotor 4 to the shaft .. 3. With the full extension of one bellows chamber and compression by the pair, the polarity on the electrodes 15, 16 changes and the reverse transfer of the working fluid in the electrolytic pump begins. At the same time there is a switching of clamps. The rotor continues in the same direction. All necessary switchings are provided by a current distributor 17 mounted on the shaft. An electric motor can be used, for example, as a drive for low-speed actuators in various fields of technology. Claims. A DC motor of slow rotary motion, comprising a housing, a rotor with an output shaft, a power element in the form of an electrolytic pump, and a pressure-transfer device for displacement, characterized in that, in order to expand the field of application and eliminate the possibility of leakage of the working fluid, the device converting pressure into displacement is made in the form of bellows chambers equipped with bottom stops, and in the housing there is an annular cavity in which bellows chambers and clamps are placed moat. 2. An engine according to claim 1, characterized in that the stops of the stops are made in the form of electromagnets with arcuate poles mounted flush with the walls of the annular body cavity. Sources of information taken in hand in the examination of the USSR Author's certificate of the USSR JMb 181180, cl. And 02 N 11/00, 1966. 2. USSR author's certificate number 265239, cl. And 02 N 11/00, 1970. 3. USSR Author's Certificate No. 237% 4, cl. And 02 N 11/00, 1969 (prototype). We. /