RU104134U1 - CONTACTLESS TYPE CIRCUIT BREAKER FOR SCREW ELECTRIC ACTUATORS - Google Patents

Abstract

 1. Automatic switch of a rotary screw electric drive, comprising four studs mounted on one base, two brackets, springs, control bars, slide bars of control bars, a pressure bar, a control bar, a guide rail guide, characterized in that it is equipped with a block with proximity sensors, a frame and levers connected mechanically pivotally to the brackets, which, when stuck in the slot of the sliders of the control rulers in the final position of the arrow translation process, provide rotation of the levers and air They act on proximity sensors, and the latter produce a position monitoring signal. ! 2. Automatic switch of the screw electric switch according to claim 1, characterized in that the kinematic diagram of the sensor control mechanism does not have direct mechanical contact with the sensors. ! 3. Automatic switch of the screw electric switch according to claim 1, characterized in that the design of the proximity sensors is equipped with a light indication of the switched position.

Description

The utility model relates to switch electric drives of railway automation and telemechanics and is intended to control and control the position of the switch.

Known electric drives arrow [1, 2, 3, 6], containing an electric motor mounted in a common housing, lowering a multi-stage mechanical gearbox with a friction clutch, a main shaft with gear, in rack gearing with a working gate, knife type auto-switch, control rulers, elements heating.

Along with the known advantages, these devices have several disadvantages due to the complexity of the design, the presence of a large number of rapidly rotating units and parts, sliding elements requiring intensive lubrication, having increased wear, the likelihood of a break and other damage to the circuit breaker and other elements and, as a consequence, low reliability , a small resource of operation of the electric drive, high operating costs.

Switch electric drives are also known [4], where microswitches are used as a contact group for a circuit breaker, which are activated by a mechanical action of a control mechanism on them. However, they do not fully exclude the above-mentioned shortcomings, sometimes leading to dangerous failures.

The purpose of this utility model is to eliminate these shortcomings, simplify the design, expand the scope, unification of switch electric drives, reduce operating costs, increase the reliability, service life and safety of train traffic.

The specified goal is achieved by the following technical solutions:

- non-contact sensors of an induction type of an industrial design are used in the automatic switch of a pointer electric drive;

- the kinematic diagram of the sensor control mechanism does not have a direct mechanical impact (contact) with them;

- the control circuit of the electric drive is based on the principle of indirect control, and the design of the circuit breaker does not have contact elements in the power and control circuits located directly in the electric drive or in cable couplings (travel boxes) in the field;

- a control circuit for the position of the arrow to be built without the use of the traditional BDR unit (diode-resistor unit), which was previously located in the electric drive or in cable couplings (travel boxes) in the field;

- the design of proximity sensors is equipped with a light indication of the switched position.

Figure 1 and 2 shows the automatic switch of the electric switch type VSP non-contact type

The switch of a screw electric switch arrow (Fig. 1) contains a base 1, felt inserts 2, four studs 3, brackets 4 and 5, springs 6 (four pieces), control rulers 7 and 8, sliders of control rulers 9 and 10, cracker 11 (two pieces), clamping strip 12, block 13 with proximity sensors 14 (four pieces), counter nuts 15 (four pieces), folding bars 16, bolts 17 securing the block with proximity sensors, folding washers 18, frame 19, nuts securing the frame 20 (four pieces), levers 21, 22, rotation axes 23 and 24, control strip 25, guide guide noy strips 26.

The automatic switch of the screw electric switch operates as follows.

At the end of the transfer of the arrow, the control rulers 7, 8 and the sliders of the control rulers 9, 10, driven by sharp-pointed arrows, occupy their final position - by grooves opposite the bracket 4, and the control strip 25, when the drive gate is locked, releases the bracket 4 corresponding to this position and the latter falls into the slot sliders of the control rulers 9, 10, the lever 21 is rotated on the axis of rotation 23 and the counterpart approaches the sensors 14 (left) and the latter produce a signal to control the position of the arrow.

Thus, in the described auto-switch of a rotary screw electric drive, due to the use of proximity sensors of an inductive type, the kinematic scheme of the sensor control mechanism without the presence of direct mechanical impact (contact) and the electric drive control circuit built on the principle of indirect control, the absence of contact elements in the power and control circuits is significantly the design of a screw electric drive auto-switch is simplified, allowing to expand its scope, uniform It’s possible to initiate, reduce operating costs, increase reliability, service life and train safety.

Information sources.

1. V.I. Soroko, V.A. Milyukov Equipment for railway automation and telemechanics. Handbook, book 1, 3rd edition, revised and expanded. M .: NPF Planeta, 2000, pp. 9-73.

2. Copyright certificate No. 1837026 A1, cl. B61L 5/06 (USSR).

3. Patent SU 1837026 A1, 08/30/1993, cl. B61L 5/06.

4. Patent RU 2181678 C2, 12.23.1998, cl. B61L 5/06.

5. Patent RU 2181679 C2, 12/23/1998, cl. B61L 5/06.

6. Patent RU 2235030, IPC ⁷ , 11/03/203, cl. B61L 5/06

Claims (3)

1. Automatic switch of a rotary screw electric drive, comprising four studs mounted on one base, two brackets, springs, control bars, slide bars of control bars, a pressure bar, a control bar, a guide rail guide, characterized in that it is equipped with a block with proximity sensors, a frame and levers connected mechanically pivotally to the brackets, which, when stuck in the slot of the sliders of the control rulers in the final position of the arrow translation process, provide rotation of the levers and air They act on proximity sensors, and the latter produce a position monitoring signal. 2. Automatic switch of the screw electric switch according to claim 1, characterized in that the kinematic diagram of the sensor control mechanism does not have direct mechanical contact with the sensors. 3. Automatic switch of the screw electric switch according to claim 1, characterized in that the design of the proximity sensors is equipped with a light indication of the switched position.