BG62111B1 - Mechanism for the actuation of the end interlocking of the motor drive of a stepping regulator - Google Patents

Abstract

The mechanism is applied in power transformers the voltage ofwhich is adjusted under load. It has reduced overall dimensionsand its servicing is simple. The moment of actuation of the endinterlockings is ensured to be constant in the process ofoperation by their actuation by means of a lever driven insuccession by a disc with pins of the position indicator and adisc with pins connected to a shaft for stepping control.

Description

Technical field

The invention relates to a mechanism for actuating the end-locks of a motor drive for step regulators for power adjustable load transformers.

BACKGROUND OF THE INVENTION

A mechanism for actuating end locks on motor actuators BG 45192 A is known, comprising a position indicator coupled to a drive gear, on which peripheral pins and associated locking actuators are mounted in accordance with the end positions in accordance with the end positions. and mechanical.

The disadvantage of this mechanism is that the torque actuation of the end locks is erratic and goes beyond the acceptable tolerances in gear wear, and the overall dimensions are relatively large.

SUMMARY OF THE INVENTION

It is an object of the invention to provide a mechanism for actuating the end actuators of a motor actuation of a foot controller, which ensures the constancy of the moment of actuation of the end actuators, and also reduces the dimensions.

The task is solved by a mechanism for actuating the end actuators of the motor actuation of the step controllers, comprising a position indicator coupled to the actuator, at the periphery of which, in accordance with the end positions, pins interacting with the oscillating lever connected to the oscillating lever are mounted. extreme mechanical and electrical interlocking. The oscillating lever is a four-lever lever with its first arm functionally connected to the end position pins, its second arm functionally linked to the end mechanical lock, its third arm connected through a spring to the housing, and its fourth arm shaped like a fork a pair of profile, parallel arms functionally connected to pins mounted on both sides of a disk disposed between the profile arms and driven by a stepper gear, the electrical interlock connection being through a cam Mounted on the shaft of the fluctuating rod.

An advantage of the end-locking mechanism according to the invention is that it is constant at the moment of actuation. The construction has reduced dimensions.

Explanation of the annexed figures

The invention is illustrated by the accompanying drawings, of which:

Figure 1 is a spatial kinematic diagram of the mechanism;

2 is a front view of the mechanism of FIG. 1;

3 shows the mechanism of FIG. 1 in the extreme position;

4 shows the mechanism of FIG. 1 after the end position and the end locks are activated.

Examples of carrying out the invention

The actuator for actuating the final actuator locks for the stage regulator / FIG. 1, 2 / there is a position indicator 1 connected to a drive shaft 2 of a drive gear 3. Pins 4, 5 are mounted on the periphery of the position indicator 1 in accordance with the end positions, the corresponding of which for a given direction of movement is touched to the shoulder 6 of oscillating about the axis 7 of the lever 8 with the arm 9 connected to the lever 10 of the mechanical lock not shown in the figure. Another arm 11 of the lever 8 is shaped as a fork 12 with profile arms 13, 14 disposed opposite to two planes parallel to the lever and tangent to the trajectories of the pin 15, 16 mounted on both sides of the disk 17. Disc 17 is disposed in the space between the profile arms 13, 14 of the fork 12 and is coupled to a shaft 18 of the kinematic gear 19 for stepping. To the shaft 20, connected to the lever 8, a cam 21 is connected to the control rollers 22 of the electrical contacts 23 of the end locks. Radially positioned against the axis 7 of the lever 8, a spring 24 is secured between the housing not shown in the figure and another arm 25 of the lever 8.

The action of the mechanism for triggering the final locks is as follows. With each switching of the single-stage motor drive, for example in the "up" direction, the position indicator 1 / fig. 1, 2 / rotates to the next position clockwise. When set to n-1 position, pin 5 touches the lever arm 6 of lever 8. The next switch from "n-1" to "n" position / FIG. 3 / the position pointer 1 and the lever 8 through the pin 5 rotate together until the profile arm 14 reaches the range of the pin 16 which overtakes it, and then the lever 8 continues rotating under the influence of the disk 17 through the pin 16 until the end of the switch. In doing so, switching the cam 21 via the roll 22 activates the electrical contacts 23 of one of the end locks. The next rotation of the disc 17 and the lever 8 engaged therefrom after the kpafrao "η" position / FIG. 4 / the cam 21 triggers a second electrical lock, and the arm 9 through the lever 10 engages a mechanical lock. When the disc 17 is rotated back to the penultimate "n - 1" position, the lever 8 engages and engages in a neutral position under the action of the spring 24.

The action of the mechanism in the direction of "lowering" from position "2" to "1" and after it is analogous.

Actuation of the lever 8, respectively of the second electrical and mechanical end 5 locks, only through the stepper gear 19 eliminates the effect of wear and manufacturing deviations on the moment of actuation of the locks due to their disproportionately lower value compared to the angle of rotation of the lever 8. This also allows reducing the overall dimensions of the mechanism.

Claims (1)

15 Claims 1. Mechanism for actuating the end actuations of a motor actuator for a foot controller, comprising a position indicator of a woman, coupled to a actuator, at the periphery of which, in accordance with the end positions, pins interacting with a oscillating lever connected to the end mechanisms are mounted an electrical lock, characterized in that the oscillating lever (8) is a four-arm lever, with its first arm (6) being functionally connected to the end position pins (4, 5), and its second arm being functionally connected to the end This mechanical lock / 10 /, its third arm / 25 / is connected via a spring / 24 / to the housing, and its fourth arm is formed as a fork / 12 / with a pair of profile, mutually 35 consecutive arms / 13, 14 /, functionally connected with pins / 15, 16 / mounted on both sides of a disk / 17 / located between the profile arms / 13, 14 / and driven by the stepper gear / 19 /, 40 being the connection for the electrical interlocking / 23 / is through the cam / 21 / mounted on the shaft / 20 / of the oscillating lever / 8 /.