SU988755A1 - Hand winch - Google Patents

Description

(54) HAND Winches

one

The invention relates to lifting devices, namely hand winches.

A manual winch is known, comprising a housing in which, with the possibility of rotation, there is a drive shaft with a handle and an eccentric neck, on which a end-wall cargo drum is freely mounted, connected to the housing by a planetary gear and a ratchet mechanism 1.

A disadvantage of the known winch is the complexity of the design due to the distinction between complicated gear wheels and a load-resistant brake.

The purpose of the invention is to simplify the design.

To achieve this goal, the planetary gear device includes a yoke freely mounted on the drive shaft and rigidly connected to the ratchet ratchet gear mounted on the drum end wall of the axle, to which spring ends are attached to the ends of the drum, and friction blocks are mounted on the other ends of the drum. interacting with the inner surface of the clip.

FIG. 1 shows a manual winch, general view; in fig. 2 is a view A of FIG. one; in fig. 3 shows a section BB in FIG. one.

The winch includes a housing 1, a drive handle 2, a cargo drum 3, mounted freely on the eccentric jaw 4 of the drive shaft 5. The drum 3 is connected to friction, pads 6 with levers 7 mounted freely on axles 8 fixed to the end wall of the drum 3 and-sv, Q zananny with friction pads 6 sharnarno. The pads 6 with the springs 9 are clamped to the holder 1Q, which is freely mounted on the shaft 5. The holder 10 is rigidly connected to the ratchet wheel 11 of the ratchet, the dog 12 of which is pivotally mounted on the box 15.

When winding a free rope on the drum 3, the knob 2 turns are turned counterclockwise (Fig. 2). In this case, the drum 3, shaft 5, planetary friction gear with the yoke 10 and the ratchet wheel 11 rotate 20 s together with the handle 2. When a load on the rope occurs, the drive shaft begins to rotate relative to the drum 3, which performs a circular motion on the eccentric neck 4 The pads 6 alternately slip along the surface of the cage 10 if the axis 8 moves with the drum counterclockwise, and prevent the axis with the drum from moving clockwise, resting against the cage, the rotation of which in clockwise systematic way prevents the pawl 12 of the ratchet mechanism. As a result, the drum rotates counterclockwise, winding a loaded rope. When changing the direction of rotation of the handle 2, the direction of rotation of the drum does not change, but its speed increases as the direction of rotation of the eccentric cheek coincides in this case with the direction of pressure of the pad 6 on the surface of the yoke 10. For unwinding the rope, the doggie 12 must be taken out of engagement with wheel 11. The rope can be unwound by either turning the knob clockwise or applying force to the rope. Thus, the hand winch allows accelerated winding of the rope on the drum, accelerated unwinding of the rope, two winding speeds of the loaded rope. Winch Designs Uproj v w SS vySX x / //

Claims (1)

; J escapes due to the absence of gears and a load resisting brake. Claims of the invention A hand winch comprising a housing in which a drive shaft with a handle and an eccentric pinhole is rotatably mounted, on which a end-wall cargo drum is freely mounted, connected to the housing by means of a planetary gearbox and a ratchet mechanism, characterized in that In order to simplify the design, the planetary gear set includes a clip freely mounted on the drive shaft and rigidly connected to the ratchet wheel of the ratchet mechanism, mounted on the end wall of the drum axis, to which one ends of the spring-loaded arms are secured, at the other ends of which are mounted friction pads interacting with the inner surface of the ferrule. Sources of information taken into account during the examination 1. Manual winch LR1M. Operation manual ЛР1.m.OO.OOORE. Plant Krasna Guardi, Odessa, 1975. fie.g Rig.Z