SU948863A2 - Winch - Google Patents

Description

(5) WINCH

one

FIELD OF THE INVENTION The invention relates to lifting devices, namely to winches, used primarily for assembly work.

According to the main author. St. No. 553199 is a well-known winch used for installation work in cramped conditions, comprising a body made of two halves connected by straps, an eccentric shaft with a reel, which is loosely seated on it, with flanges made of a curvilinear profile, interacting with straps and forming with the latter, the pinching engagement 0. The disadvantage of this is the uneven movement of the load, increased dynamic loads. on the winch mechanism, which reduces the durability and reliability of its parts.

The aim of the invention is to improve the reliability of the winch by reducing the dynamic loads.

This is achieved by the fact that the winch is equipped with discs mounted on an eccentric shaft, and the ends of the pinwheel are located in the holes of the housing with a gap.

FIG. 1 shows the proposed winch; in fig. 2 -. View along arrow A in FIG. one; in fig. 3 winch with eccentrics, rotated 180 relative to each other (option for performing tsovki).

Claims (1)

The winch contains a housing consisting of two halves 1 and 2, in which an eccentric bearing is mounted on bearings 3, a 5-pinny shaft 4 carrying a bearing drum 5 with a flexible pulling element, ment 6, on itself. The edges of the drum 5 are made of a curved profile in the same pinwheels, which mate with the pinholes 7 located along the cylinder-forming, ensuring their engagement with the pinwheels. The sleeves 7 are rigidly mounted in disks 39 8 and 9 "mounted on bearings 10 on eccentrics 11 and 12 of shaft 4 on both sides of the drum 5- The ends of the zippers 7 are located in the holes O in the half of the housing 1, 2 located around the circumference of the concentric axis of the shaft Z. The eccentrics 11 and 12 of the drive shaft C can be rotated relative to each other by 180, Tseevki 7 can be made shortened (see Fig. 3). In this case, the halves of the body are interconnected by straps 13. The locking 7 of the disks 7 is fixed either by locking screws 1 (see Fig. 1) or by pins. The winch works as follows. When the eccentric shaft k is rotated in the bearings 3, the disks 8.9 with floating heads 7 make floating movement through the bearings 10. With their ends, the ends 7 roll around the Holes O in halves 1, 2 of the housing, which are the support for the ends 7 when perceived the main load from the moment of load on the drum 5 and keep the disks 8, E from rotation on the eccentrics 11 and 12 of the shaft. By making oscillations about the drum 5, the zippers 7 ensure its rotation by the calculated difference in the number of zippers 7 and the numbers of teeth of the flange wheels of the flanges of the drum 5 for one revolution of the eccentric shaft 4. The rotation of the eccentrics, disks 8, 9 by l80 ° relative to each other (see FIG. 3) allows you to balance the eccentric drive shaft k, which is necessary for winches with high-speed mechanical drive. The invention will improve the reliability, durability of the winch by reducing the dynamic loads on the winch mechanism. The formula of the invention St. No. 553T99, characterized in that, in order to increase its reliability by reducing dynamic loads, it is provided with discs mounted on an eccentric shaft, and the ends of the pin-down housings are located in the openings of the housing with a gap. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 553199, cl. B 66 D 1/16, 197 (prototype). fug. f 15 ffi.J