SU105886A1 - Device for automatic stabilization of the speed of the cargo winch crane - Google Patents

Description

The subject of the invention is a ycTpoilcTBO for automatically stabilizing the speed of a cargo winch in lightweight cranes for use in construction.

The known devices for the automatic stabilization of the speed of the cargo winch in construction cranes, such as a tower tower, by means of airing the electric brake shoe using the tachogenerator CTOSJHHoro jOKa, mechanically connected to the shaft of the winch, have the same shortness of the tachogenerator, which is mechanically connected to the shaft of the winch, have the same shortness of the tachogenerator, which is mechanically connected with the shaft of the winch, had the same drawback of the tachogenerator, which was mechanically connected with the shaft of the winch, that they had a little tachogenerator, that they had the same amount of power as the drawbar, because they did not have the same factor, they didn’t have the same circuitry, then they lost the flow of the tachogenerator using the tachogenerator and the tachogenerator lightweight tiaa.

This deficiency is eliminated in the device described below by the fact that the electric motor of the drum brake of the winch uses a direct current motor, which is powered by a rectifier and a tachomachine connected by nosleda; and iri-lowering-iodormazhivanie proiortspona, especially the speed of the winch.

FIG. 1 shows a diagram of the device d, slowing down the lowering of the load; its load is a shoe brake, which is controlled by the dieter and automatically; in fig. 2 is a diagram of the same device controlled remotely by hand; in fig. 3 and 1 dimensional characteristics of the device) oyc1va.

The device for automatic stabilization of the winch speed consists of a conventional brake, in which, instead of the Topi O3Hoi-o magnet1, the servo motor / DC is installed (tiia 1 H-2, 25 kt}, which when the engine 2 is turned the network receives power from rectifying, opens the brake with 1 .7. The engine, having started to rotate in the direction of descent, turns on the tachogenerator 4, the voltage of which is turned on towards the driver and weakens the torque of the servo motor. brake and automatically iodormazhivanpe do the formation of a certain rate of descent of the load.

Tachoheiyera's enjoyment with the aid of a rheostat 5 The speed of descent can be varied over a wide range.

The device of the ormoz can also be operated with a handle (i.e. without; gauge generator), if the resistor 5 is inserted directly into the servomotor as shown in FIG. 2

To control the ipnigator iipn, a magnetic congroller (for example, type TC-11290) is not shown in the drawing, in combination with which the brake according to the second variant (Fig. 2) can give the speed characteristics, which are shown in FIG. 3

Subject invention

VcTpoiiCTBO for automatic stabilization of cargo speed

leoedkp crane, by acting on the electric brake shoe using a tachoheiyerator and a current of current., mechanically connecting with the shaft. tebeldsi, o t; i and p a yu P1, so that, in order to slow down, only speed when lowering the load, as an electric drive of the drum brake of the winch, a direct current motor is used, receiving power from the rectifier and the tachomachine connected to pos.1e; 1 is oval in TaKOii, when the load is lifted the brake is released lowering-iodor mazhivanie proportional to the speed of the winch.