SU1306894A1 - Winch - Google Patents

Abstract

The invention relates to lifting mechanisms used to lift and move loads. The purpose of the invention is to increase the reliability of the winch. The traction mechanism of the winch includes three drums 1 made with cog wheels 2 interacting with the central drive bar 3. The drums 1 are located at equal distance from the center of gear 3 and at an angle of 120 to each other. Each drum 1 has 1 turns of the load rope 5. Before each drum 1, the guide rollers 7 are installed. Rotation from gear 3 via gears 2 is transmitted to drums 1. Due to the frictional force resulting from the clutch of the rope 5 with the surface of the drums 1, the rope 5 is rewound in the direction of rotation of the drums. In operation, guide rollers 7 prevent lateral displacement of the rope 5 and the friction of its turns against each other 2 slugs. with S (L Figure 1

Description

The invention relates to lifting mechanisms, in particular to winches used for lifting and moving loads.

The purpose of the invention is to improve the reliability of the winch by performing a hoisting rope that covers the full perimeter of the drum and eliminating the lateral displacement of the rope along the drum.

Fig. 1 is a schematic diagram of a winch; figure 2 is the same, view in axonometric view.

The winch contains three drums 1 with gear wheels 2, which are connected with the central drive gear 3. The drums 1 are located at equal distance from the center of the drive gear 3 and at an angle of 120 relative to each other. The axes of the drums 1 and gears 3 are fixed in the walls of the housing 4. On each drum 1, 1 turns of the load rope 5 are stored. The entrance and the descending ends of the rope are fixed by pressure rollers 6 on one of the drums. In order to prevent the lateral displacement of the rope 5, the guide rollers 7 attached to the walls of the housing 4 are installed in front of each drum 1. The drive gear 3 is located on the same shaft with gear 8, which interacts with the drive shaft with the handle 9.

The device works as follows.

Handle 9 is rotated by gear 8 and 3, which transmit rotation in one direction by drum 1. Due to the frictional force resulting from the adhesion of the rope 5 with the surface of the drum 1, the rope 5 is rewound in the direction of rotation of the drums. With

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rope rewinding

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5 without a load, the pressure rollers 6 prevent the rope 5 from slipping relative to the drum, and when the load moves the winch, the tension of the rope 5 wound on the drums 1 is created by the load itself. .

Claims (1)

Invention Formula A winch containing a traction mechanism with a load rope, made in the form of two drums rewinding the load rope, kinematically connected to the drive gear by means of gear wheels with which these drums are fitted, and a clamping device for the load rope, characterized in that improving the reliability of the winch by performing a hoisting rope that covers the full perimeter of the drum, and eliminating the lateral displacement of the rope on the drum, the pull mechanism is additionally made with the third drum with a gear wheel, also kinematically connected with the drive gear, all three drums are located along the periphery of the said drive gear at an angle of 120 between each other and at an equal distance from each other, and the cargo rope is sequentially stored in 1 of its turns on each of these drums, with the guide rollers mounted before each drum rotating the lateral displacement of the cargo rope on the side of the working surface of each drum. Editor M. Bandura Compiled by A. Bondarenko Tehred L.Oleynik Proofreader T.Kolb Order 1492/21 Circulation 721 Subscription VNIIPI USSR State Committee for inventions and discoveries 113035, Moscow, Zh-35, Raushsk nab., 4/5 Manufacturing and printing company, Uzhgorod, Projecto st., 4 FIG. 2