SU376614A1 - ALL-UNION IIATEIITKG ^ -ia.rt'iEuHAe - Google Patents

Description

one

The invention relates to mechanical engineering.

A device for braking and fixing a mechanism is known, comprising a rotating impeller interacting with the teeth of a brake element controlled by an electromagnet with a fixed magnetic circuit and an elastic link acting on a roller rigidly connected with a brake element.

The disadvantages of the known device are the lack of precise fixation of the angular position and the absence of depreciation to soften the impact during braking.

The purpose of the invention is to increase the accuracy of fixing the angular position of the mechanism and ensure the damping properties, as well as reduce the working magnetic gap.

For this, the device is provided with an axially mounted intermediate sleeve between the roller and the elastic link with a triangular recess at the end in which the roller is placed, and the braking element is designed as a disc with end teeth.

In addition, in order to improve accuracy while maintaining the minimum dimensions, measles and magnetic core are made with opposite groove and protrusion. Due to the minimum radial working gap between the protrusion of the core and the groove of the magnetic circuit at

significantly increased during the course of the core, the operation force of the electromagnet ne is reduced.

FIG. 1 — proposed device, section; in fig. 2 - fixing part, side view.

The device comprises an electromagnet consisting of a coil 1, a magnetic conductor 2 with an annular groove, a core 3 with an annular protrusion and a sleeve 4. The edges of the protrusion of the core are in the same plane with the edges of the groove of the magnetic circuit; the magnetic core 2 and the measles 3 are made of a magnet of a soft material, the sleeve 4 is made of a non-magnetic material.

At one end of the stem 5 core, there is a brake element 6 with end teeth that engage with end teeth on the gear impeller 7, and roller 8 is fixed to the other zero-setting roller 8, pressed by spring 9 in a triangular cutout movable in the axial direction of the sleeve 10, The device works as follows. When the electromagnet is turned on, the protrusion core 3 enters the groove of the magnetic circuit 2, while

the end teeth of the element 6 are disengaged from the teeth, of the gear wheel 7, which rotates with the mechanism.

At the moment of deceleration, the magnet de-energizes, the measles 3 rises up under the action of the spring 9, the teeth of the element 6 interlock

with the teeth of the gear wheel 7, and the mechanism is braked.

At the moment of coupling of the end teeth, the rod 5 with the inertia of the rotation of the mechanism rotates through a certain angle, while the roller 8 of the rod, moving along the inclined surface of the recess of the movable sleeve 10, compresses the spring 9 and extinguishes the kinetic energy of the mechanism. Then, unclasping, the spring 5 fixes the inhibited position of the mechanism by placing the roller S in the center of the cut-out and the intermediate sleeve 10.

Subject invention

Claims (2)

1. A device for braking and fixing the mechanism, comprising a rotating impeller interacting with the teeth of a brake element controlled by an electromagnet with a fixed magnetic circuit and an elastic link acting on a roller rigidly connected with a brake element characterized by In order to improve the fixation accuracy and provide depreciation properties, it is equipped with an intermediate sleeve with a triangular cross-section mounted with the possibility of axial movement between the roller and the elastic link. cut at the end, in which the roller is placed, and the brake element is designed in the form of a disc with end teeth. 2. The device according to claim 1, characterized in that in order to reduce the operating magnetic gap, measles provided with an annular protrusion that interacts with the opposite groove provided on the magnetic core, with the edges of the protrusion and the groove are located in the same plane. FIG. 2