SU485957A1 - Winch for lifting and dropping the working body - Google Patents

Description

one

The invention relates to the field of lifting mechanisms, namely to the winches of devices using free-fall energy.

Winches for lifting and dropping the working member are known, which comprise a cable-carrying body with a device for fixing the rope on it.

However, the lifting and dropping in this winch is organized irrationally. Reversing the drum under dynamic load conditions causes intense wear and breakage of the friction disk that is in constant contact with the drum, with the result that the winch does not work reliably enough.

The purpose of the invention is to automate the processes of lifting and dropping and improving the reliability of the winch in operation.

For this, the cable-carrying body is made in the form of two interconnected by means of a finger and a console mounted on coaxial shafts of disks, of which at least one is movable in the axial direction, forming at the approach of the stream for the rope, one end of which is fixed on the finger and the other on the working body.

FIG. 1 schematically shows the proposed winch during the raising of the working body; on phpg. 2 - the same at the time of dropping; in fig. 3 is a view along arrow A in FIG. 1 (the mechanism of convergence of disks).

The winch for lifting and dropping the working body consists of two discs: a lead I cantilever mounted on a drive shaft 3 mounted in support 2, and a slave 4 mounted on cantilever shaft 5 coaxially with a drive shaft 3 mounted axially movable in a stand

6. Disks 1 and 4, one of which, for example, the driven disk 4, is provided with a circular conical surface connected by a finger for 7 seconds. fixed on it with a rope 8, the other end of which is attached to the working body (not shown in the drawing).

The end of the hub of the driven disc 4 is provided with diameters 9 located at different distances from the axis of rotation, and under the influence of the spring 10 mounted on the shaft 5, is in constant contact with. rollers 11, respectively fixed on the support 6. The rollers And mounted in a spring-loaded and pivotally mounted on the support 6 brackets 12,

moreover, the axes 13 of the brackets 12 are displaced relative to the axes 14 of the rollers 11 in the direction opposite to the direction of rotation of the disks 1 and 4, and the disks themselves are mounted on supports 2 and 6 with an end clearance 15. For

convenience settings rollers 11 installed

on support b with the possibility of angular adjustment.

The winch works as follows.

When the working body is lifted, the driven disc 4, under the action of the rollers 11 on its end face, moves closer to the disc 1 and rotates with it, with the result that the rope 8, winding onto the discs 1 and 4, is placed in the stream formed by them. When the edges of the cavities 9 of the disk 4 are combined with the rollers 11, the driven disk 4 is removed by the force of the spring 10 from the driving disk 1, freeing the rope 8 laid in the stream and thus ensuring the free fall of the tool.

With further rotation of the discs 1 and 4, the inclined surfaces of the valleys 9, interacting with the rollers 11, bring the leading disc 4 closer to the leader, the rope 8 winding up onto the discs 1 and 4 and the cycle repeats again.

Thus, the lifting and dropping of the working member is carried out automatically with continuous one-way rotation of the cable-carrying member.

Subject invention

The winch for lifting and dropping the working body, mainly for mechanisms using free-fall energy, contains a cable-carrying body with a device for fastening a rope on it, which is different from the fact that, in order to automate the working cycle and improve operational reliability, the cable-carrying body is made in the form of two interconnected by means of a finger and a console mounted on coaxial shafts of the disks, of which at least one is movable in the axial direction, forming at the approach of the stream for the rope , One end of which is attached to the finger, and the other - on your body.

ten

FIG. one