RU2267840C2 - Current-collecting device - Google Patents

Abstract

FIELD: electric engineering, in particular, multi-channel current-collective devices, used in electronic engineering for transferring electric control signals and voltages of direct and alternating currents from immovable portion of product to moveable portion and vice versa; device can be used for construction of telescopes, robots, military equipment, tower cranes and the like.

SUBSTANCE: between high-current and low-current stator-rotor couples are least one screen is mounted, and also contact rings, letting large currents through, are connected in parallel by current-conducting nuts. Insulating inserts are mounted before groups of flat and leaf-shaped contact rings of various circuits. Current-collecting device allows transferring digital and video-signal concurrently with power energy without any interference.

EFFECT: significantly increased spectrum of concurrently transferred electric signals in current-collecting devices, meant for transferring along large numbers of current-collecting circuits of electric signals of various frequency and power.

2 cl, 3 dwg

Description

The invention relates to the field of electrical engineering, more specifically to multichannel current-collecting devices used in electronic technology for transmitting electrical control signals and supply voltage of direct and alternating currents from the fixed part of the product to the movable and vice versa. The device can be used in telescopes, robots, military equipment, tower cranes, etc.

Known current collection device - RF patent No. 855808 [1], containing a rotor and a stator with insulated flat and flap contact rings placed on them. Due to the lack of additional rotor and stator, this analogue does not have the ability to place high-current contact rings on one rotor-stator pair, and low-current ones on the other.

The closest analogue (prototype) of the proposed device is a current collector - RF patent No. 1725300 [2] with an additional rotor and stator. In such a device, it is possible to arrange high-current contact rings on one rotor-stator pair, and low-current ones on the other. But at the same time, the prototype cannot protect low-current circuits from interference caused by high-current circuits during operation of the product. In addition, the maximum amount of current removed by this analogue depends on the size of the contact rings.

The purpose of the invention is the expansion of functionality by expanding the range of simultaneously transmitted currents.

The goal is achieved by adding to the prototype a screen separating high-current and low-current circuits, as well as parallelizing conductive washers of contact rings that allow high currents to pass through.

In the proposed device:

- digital signals of the Manchester-II, RS-422, RS-232 type, a full video signal and pulse currents up to 1 A with a frequency of up to 5 kHz, voltage up to 15 V are transmitted through the contact pairs of a low-current contact device;

- direct currents up to 120 A, 27-300 V and alternating currents up to 120 A, 220 V, 400 Hz are transmitted through the contact pairs of a high-current contact device.

Figure 1 shows the proposed collector device in longitudinal section; figure 2 is a section along aa in figure 1; figure 3 - remote elements B in figure 1.

The proposed current collection device is structurally made of a fixed housing 1 and a movable 2.

On the movable housing are installed: high-current connectors 3, low-current connectors 4, leash 5, with the help of which the mechanical connection of the moving housing with the moving part of the object is carried out.

In the lower part of the fixed casing, high-current 6 and low-current 7 connectors are installed.

Inside the proposed device there are two contact devices inserted one into the other.

High current contact device (external) consists of a stator 8 and a rotor 9.

The stator of the high-current contact device 8 is rigidly fixed in the upper part of the stationary housing 1 and is made in the form of eight studs 10 on which are installed internal flap contact rings 12, united in groups by metal conductive washers 24 (within the same circuit), and insulating rings 27 separating chains.

The rotor of the high-current contact device 9 is rigidly fixed to the movable housing 2 and consists of a shaft 13 on which external flat contact rings 14 are mounted, united in groups by metal conductive washers 25 (within the same circuit), and insulating rings 26 that separate the circuits.

A low-current contact device (internal) is placed in the cavity of the shaft 13, which acts as a screen, and consists of a rotor 15 and a stator 16.

The rotor of the low-current contact device 15 is connected to the rotor of the external contact device 9 and is made in the form of six studs 17, mounted on a movable base 18, on which are installed internal flap contact rings 19, isolated from each other by insulating rings 11 and 22.

The stator of the low-current contact device 16 is rigidly fixed in the lower part of the stationary housing 1 and is made in the form of a shaft 20 on which external flat contact rings 21 are installed, isolated from each other by insulating rings 23 and 35.

The current collector device operates as follows.

First, a mechanical connection is made, through the leash 5, of the rotating part with the movable housing 2, and the fixed part with the stationary housing 1 and the electrical connection of the current collector through pairs of connectors 6/3 and 7/4.

Low-current electrical signals through the connector 7 along the contact rings 21 of the stator of the low-current contact device 16 go to the contacting petals of the contact rings 19 of the rotor of the low-current contact device 15, from where they are sent through wires to the connector 4 and then to the rotating part of the object.

High-current electrical signals through connector 6 according to the groups of contact rings 12 connected by conductive washers 24, the stator of a high-current contact device 8, by their petals, go to the contacting groups of contact rings 14 connected by conductive washers 25 of the rotor of a high-current contact device 9, from where wires are supplied to connector 3 and then to the rotating part of the object.

For shielding low-current conductors 28 and 29 from high-current conductors 30 and 31, they serve: in the movable case, screens 32 and 33, in a stationary case - screen 34.

The presence of the screen allows you to expand the operational capabilities of the proposed design of the current collector, as it allows you to transmit along with the power supply digital and video signals without interference.

The advantage of the proposed design is that it uses contact rings of the same sizes, combined into groups of conductive washers, to transmit strong currents of various sizes. In this case, the number of rings and washers in the group depends on the value of the transmitted current.

Such a unification of the contact rings ensures uniform contact tension, therefore, the reliability and durability of the product are increased, and suggests a high adaptability of the device, i.e. does not require the manufacture of slip rings of various sizes for transmitting small and large currents.

This current collector device in comparison with the prototype and other known design solutions can significantly expand the range of simultaneously transmitted electrical signals in current collector devices designed to transmit over a large number of current collector circuits of electrical signals of different frequencies and powers.

Claims (2)

1. Current collector device containing two or more pairs of rotor-stator, interacting with each other by means of flat and lobe rings, separated by insulating rings, characterized in that it is equipped with at least one screen separating high-current and low-current circuits and excluding the electromagnetic effect of electrical circuits of one rotor-stator pair on another, and in high-current circuits, conductive washers are installed between flat and flap contact rings within one circuit, and the insulating Wedged gaskets are installed between groups of flat and flap contact rings of various circuits. 2. The device according to claim 1, characterized in that the screen is simultaneously a structural element for placing contact, insulating rings and conductive washers.

Images