SU748705A1 - Linear cylindrical dc electric motor current-collecting device - Google Patents

Description

The invention relates to electrical engineering.

A device for current collection of a linear, direct current electric motor containing an excitation system and measles with a winding, the active layer of which is made of individual elements isolated from each other, each of which consists of a coil enclosed by a ferromagnetic washer that serves simultaneously as a collector plate 1, is known. The brush in the engine is carried out by means of brushes sliding along the collector and installed in special brush holders. However, the use of special brush holders and brushes leads to the complication of construction and reduce the reliability of the device.

It is also known to assemble a linear current motor with a direct current motor, which contains a syngon, an excitation theme with sliding bearings and measles with a winding / active layer of which is made as in the described design 2. The slip collection system includes sliding surfaces, each consisting of

from rings — internal from a conductive antifriction material—. la n external of the insulating material ..

five

Spring-loaded collector elements made in the form of ring segments installed with a gap along the circumference of the cork.

The disadvantage of this design

10 is that the motor must contain at least three current collecting elements, i.e. Two sliding slip caps installed on the edges of the magnetic system / inner rings made of conductive antifriction material are included in the current collection system / and the spring loaded collector element in the form of ring segments. The presence of the same in the engine

20 collector elements of various designs reduces the level of engine unification.

In single-pole linear electric motors of direct current, in which the pivot points serve as a coupon for conducting magnetic flux, two current-elec- tric elements are used. Execution in the ego case of current collection elements in the form of solid rings with 30

The reliability of the engine, and in the form of segments, complicates both the design. The current collection of the engine, as well as the technology of manufacturing the current collection elements.

In addition, when there is an off-axis movement of the excitation system or the core and the operating mechanism in operation, when using continuous tc of conducting rings rigidly installed in insulating rings, vibration is directly sensed by current-collecting elements.

The purpose of the invention is to simplify the current collection system and increase the level of engine unification. . This is achieved by the fact that in the proposed device a ring of insulating material is used. made in the axial direction of the composite, and the inner ring of conductive antifriction material has a variable cross-section such that when the said ring is located inside the outer ring, a gap is formed in part of the length of the mating circles, in which the additionally inserted elastic element is placed. cop ..

On FIG. 1, a linear cylindrical DC motor with a current collection device of the described construction is shown in section, a section; Fig. 2 shows a sliding bearing.

The linear cylindrical direct current electric motor contains a magnetic system 1 with excitation winding 2 and sliding bearings 3, measles 4, on the core 5 of which there are separate elements isolated from each other, each of which consists of a coil 6 surrounded by a ferromagnetic washer 7 serving as a plate at the same time collector. -. „- ™ -.-- .- -., -, .. ---- .---

The sliding bearings 3 are made in the form of a ring 8 of conductive antifriction material, enclosed by a ring 9 of an insulating material. The ring 9 of the insulating material is made in the axial direction of the composite and consists of two parts 10 and 1I with a connection line 12. Figure 2 shows a sliding bearing, in which one of the parts, for example 10, is missing. Ring 9 is equipped with a ring 8 of conductive anti-friction material. The ring 8 is made of variable cross section so that when installing the ring 8 in the ring

19, a gap 13 is formed over a part of the length of the adjoining circles.

In the gap 13 between the ring 8 and the ring 9, an elastic element 14 is located. Through a hole 15 in the ring 9 a conductor is supplied to the ring 8.

When the current collector is assembled in an engine, in order to ensure the reliability of its operation, it is advisable to install the sliding bearings 3 in such a way that the installation location of the elastic element 14 in each subsequent bearing is shifted compared to the previous one in the engine with two current collecting elements by 180 °; in an engine with three current collectors,

5 cops on 120, itd.

The invention makes it possible to simplify the current collection system of a linear cylindrical DC motor, increase its level of unification, and reduce the influence of external influences on the current collecting elements.

The invention can be used in moving bodies to drive sections 5 of sliding doors, curtains, valve, flaps, pushers, etc.

Claims (1)

Invention Formula The current collector device of a linear cylindrical DC motor, made in the form of sliding bearing included in the current collection system, each of which consists of an inner ring of conductive antifriction material and an outer ring of insulating material, which is designed to simplify the current collection system and increase the level of unification of the engine, the ring of insulating AO-O-material is made in the axial direction of the composite, and the inner ring of conductive anti-friction The material has a variable cross section such that when the said ring is located inside the outer ring, a saisop is formed along part of the length of the adjacent circles, in which the additionally inserted elastic element is placed. Sources of information taken into account in the examination 1. Author's certificate of the USSR 523492, cl. And 02 K. 41/02, 1974. 52. USSR author's certificate by. Application No. 2415533, cl. H 02 K 41/02, 1976 (prototype).