SU660928A2 - Portable leverage-tackle winch - Google Patents

Description

(54) PORTABLE ARMWINDLE WINCH

one

Known lever-block winch on the main ed. St. No. 299457, containing a working rope with a hook, a traction mechanism in the form of a lever system of a drive with grippers of a rope 1.

However, such a winch is difficult to operate due to manual reversal.

The aim of the invention is to improve the reliability of the winch in operation and ease of operation.

To do this, each gripper is provided with a stand and a spring, one end of which is fixed on the stand and the other by means of the fixing element on the catch body, while the fixing element is designed to be fixed on opposite sides with respect to the stand.

The drawing shows the described winch, a general view.

The winch consists of a drive lever 1, to which is attached an earring 2 by axis 3. To the rear part (in the direction of movement of the winch) of an earring 2 two bolts 4 fasten one end of a working Kanat thrown over block 5 with a hook 6. On axis x 7 are mounted braces , at the ends of which are bolts 9 fasteners, consisting of a fully concave housing 10, guide tubes 11 with stiffener 12. On axis 13 in the housing there is a cam 14 with a leash 15. Two jaws 16 are inserted into the housing in the housing. Cam 14 it is supplied with a rack 17 and a spring 18. The end of a spring is fixed on fic iruyuschem element 19 which is mounted in two positions on the housing alternately gripping and provides provisional fixation clamp on a cable without slipping when the end of the spring is secured in front (see.

drawing). To relieve tension on the cable or lower the load, the end of the spring must be secured in the rear slot. The winch is provided with an elastic member 20. A hook winch clings to the object to be lifted or dragged. The free end of the rope is attached to a fixed object (post, tree). Then you need to choose a slack rope. To do this, pushing the leads of the 15 grippers move the winch forward until the rope is tensioned. After taking off

the force of the rope remains in a tight state, and both or one of the grips are put into operation. The winch appears to be mounted on a tensioned rope: along the edges it rests on the rope with grippers, and in the middle it is fastened with an axle 3.

The handle of the drive lever is moved forward and backward.

When moving the handle forward, the front clip through the lead receives a push forward.

In this case, the driver extends the spring, releases the clamp from preload, and it moves forward freely. The rear grip gets a push back through the leash. The lead 15 enhances the pre-compression and the clamp is firmly held on the rope. Lower axis 7 becomes for the drive arm 1 a fixed support. The forward clip is also advanced. Having reached the extreme forward position, he moves the handle back. In this case, the rope is clamped by the front grip. Upper axis 7 becomes for the drive arm 1 a fixed support. Rear grip, an earring 2 with a rope and a load, etc. are pushed forward.

To lower the load or relieve the tension of the rope, the ends of the springs 18 of both claws must be transferred to the rear slots. Then free grab will not be able to hold the rope. To clamp the rope, you need to bring the grip to the extreme back position, where

it rests on the resilient rubber element 20 and, overcoming the spring tension, will clamp the rope. This will automatically release the second grip, which will also clamp the rope in the rearmost position, and so on. Thus, the load is lowered without manual intervention.

To activate the second speed, it is necessary to connect the rods 8 to the outer holes of the drive lever 1.

Claims (1)

1. USSR author's certificate No. 299457, cl. B 66 D 1/02. 1969.