SU1366423A1 - Arrangement for overload protection of vertical mechanical press - Google Patents

Abstract

The invention relates to the field of forge-and-press engineering, in particular, to the design of the D1t devices for protecting vertical mechanical presses against overload. The purpose of the invention is increased reliability. V force, acting on the follower 2, is transmitted through semi-cylindrical bearings 15-22 of rollers 3-10, as well as spacers 24-31 to stops 13 and 14. In the event of an overload, the force acting through stops 13 and 14 on the springs 125 will exceed the magnitude of their pre-compression force. As a result, the springs 2, squeezing, allow the 13 m stops to move: - -. At this time, the rollers, slippage along the cooTBRTCTEWji rvo POLY-DISTRIBUTED SUPPORTS., Make it possible to lower the follower 2. After the elimination of overloading, the rollers and spacers for IT pin 12 of i3 and 14 return to their original position. I il. | e

Description

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The invention relates to forging machinery, in particular, to the design of devices for protecting vertical mechanical presses from overloading.

The purpose of the invention is to increase reliability.

The drawing shows the proposed device.

The device contains a movable stopper 2 installed under the connecting rod 1, two rows of rollers 3-6 placed under it, as well as 7-10 installed in the slide 11 and spring-loaded with springs 12 relative to the slide 11 two cylindrical stops 13 and 14 fixed to the movable sub 2 and in the slider 1 I Semi-cylindrical supports 15-22, fixed in the slider 11 central roller 23, as well as spacers 24-31 located between rollers 3-10 and central roller 23 with cylindrical surfaces according to the shape of rollers 3-10 and 23, and on the rollers 3 - 10 from the side of the semi-. cylindrical supports 15–22, corresponding recesses in the form of supports are made. The central roller 23 is mounted on platform 32.

The centers of the curvature of the cylindrical surfaces of the spacers are located relative to the zone of contact of the roller and the corresponding central surface of the inserts from the side of the rollers. Each semi-cylindrical support is mounted so that in the initial position its center of curvature is located between the center of curvature of the corresponding roller and its longitudinal forming, facing the nearest stop. To regulate the magnitude of the force exerting on the springs 12, threaded bushings 33 are mounted in the slider.

The symmetrical installation of the rollers, bearings and spacers relative to the central roller allows to balance the horizontal forces and thereby eliminate their effect on a pair of a third sub-body - body.

The location in the initial state of the center of the curvature of each semi-cylindrical support between the center of curvature of the roller in contact with it and its longitudinal generatrix facing the nearest stop reduces the force acting on the spring.

Installation between the rollers of the upper and lower rows and between the central

roller and the nearest rollers of the upper row of spacers with two cylindrical surfaces, centers

the curvatures of which are located relative to the zone of contact of the roller and the corresponding cylindrical surface of the inserts from the side of the roller, allows to obtain an internal touch

roller with a cylindrical surface of the spacer and thereby significantly reduce contact stresses, reduce the size of the rollers.

The device works as follows.

The force acting on the follower 2 is transmitted through the semi-cylindrical supports 15-18 and by means of the supports 19-22 rollers 3-6 and 7-10, and also

spacers 24-31 on stops 13 and 14.

In the event of an overload, the force acting through the stops 13 and 14 on the springs 12 exceeds the value of the force of their preliminary compression,

as a result, the springs 12, being compressed, allow the stops 13 and 14 to move. At the same time, the rollers, sliding along the respective semi-cylindrical supports, make it possible to lower the follower 2.

After the overload has been removed, the rollers and spacers under the action of the springs 12 on the stops 13 and 14 return to their original position.

The technical and economic effect of the implementation of the invention is provided by an increase in reliability as compared with the basic object.

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formula of invention

A device for protecting a vertical mechanical press against overload, comprising:

under the connecting rod there are a two-way roller, two rows of rollers placed under it, mounted in a slider and two W-shindric supports fixed in relation to it, fixed on a movable liner and in a slider half-cylindrical supports, and also fixed in the slider central roller, while the stops, the central roller and the supports are mounted with the ability to

interaction with the respective rollers, characterized in that, in order to increase reliability, it is provided with upper and lower rows arranged between the rollers,

313664234

as well as between the central roller and the faces of the upper and lower rows with the corresponding roller of the upper p - side of the semi-cylindrical supports of the outer spacers with cylindrical supports, the corresponding grooves

rollers in the form of supports;

Claims (1)

4 ₀ claims A device for protecting the vertical mechanical press from overload, comprising a movable thrust bearing mounted 45 under the connecting rod, two rows of rollers placed under it, two cylindrical stops mounted under the slide and spring-loaded relative to it, mounted on the 5θ sliding thrust bearing and half-cylindrical support in the slider, and also fixed in central roller slide, with the abutments, and the central roller bearing ₅₅ mounted with the possibility of interaction with the respective rollers, characterized in that, for the purpose of ysheniya reliability, it is provided with rollers arranged between the upper and lower rows and between the center roller and the corresponding roller of the top row cylindrical surfaces with spacers in the form of rollers, the rollers on the upper and lower rows by the semicylindrical supports are made corresponding recesses 5 form supports.