SU19327A1 - Drum winch with safety handle - Google Patents

Description

To release the winch handle from the drum while rotating it in the opposite direction, a finger is pivotally fixed on the drum bearing and coming in contact with the disk rigidly connected to the drum. When the drum rotates in the opposite direction, the aforementioned finger moves the disk together with the drum to the side and interrupts the adhesion of the drum to its rotating handle.

In FIG. 1 shows a side view of a drum winch; FIG. 2-gto, top view; FIG. 3-part disc, side view.

The pipe axle 1, with a winch drum 3 rigidly mounted on it, rotating and having the ability to move longitudinally in bearings 2, also carries with it rigidly connected wheel 6 with square-spoke spokes, a ratchet wheel 4 and a disk 5 provided with recesses, which may include the end of the finger 13, pivotally fixed, through the axis 14, at high tide to the bearing 2 and attracted to the surface of the disk 5 by the spring 15. Inside the tubular axis, the axis 7 of continuous cross section has a rotation and is fitted at one end of the handle Oi 8 carrying the pawl 11, coming under the influence of the spring 12 in contact with the spokes of the wheel 6 during the working rotation of the winch. The other end of the axis 7 rotates in the bearing 9 and is held by the screw 10 from longitudinal movements. A spring 16 is placed between the disk 5 and the bearing 9, pressing the disk together with the axis 1 from the bearing 9 in the direction of the handle 8. In addition, on the winch frame there is a lever 17 with a protrusion 19 at the end, which end tends to This position is under the influence of the spring 18. The dog 20, rotatably fixed on the frame of the winch, is designed to engage with the ratchet wheel 4.

During normal operation of the winch, axis 1, together with disk 5, drum 3, ratchet wheel 4 and wheel 1, is shifted to the right side of FIG. 1 by the action of the spring 16 and the spoke of the wheel 6 is in contact with the pawl 11 of the handle 8, which makes it possible for the drum A to rotate with the handle 8 and lift the load by means of the first winding of the rope 21 onto the drum. When the load is lowered, the pawl 20 folds away from the ratchet 4, but when the disk 5 rotates back, the finger 13, pressed against it by the spring 15, enters one of the recesses on the disk surface and, assigning to the rotation on the axis 14, moves the disk together with the axis 1 and the sausage 6 to the left side of FIG. 1. When the atom moves the axis 1, the wheel b comes out of contact with the pawl 11 and the handle 8 stops following the rotation of the drum 3. At the same time, the spring 16 is compressed, and the disk 5 extends beyond the protrusion 19 of the lever 17 lifted by the spring 18 and the offset position of the wheel 6 is fixed until lever 17 is forcibly lowered, and finger 13 is removed from contact with disc 5. To regulate the speed of free lowering of the load, when the drum is disengaged from the handle, friction brake 22 can be used, which is in contact with disc 5 when it is On the left side of FIG. one.

The subject of the patent.

Drum winch with a safety handle using thrust links designed to disengage the drum with a handle when the latter rotates in the opposite direction, characterized by the fact that the stop link, made in the form of a finger 13, is pivotally fixed to the winch frame 2 and the other end - slides along concentrically located slots on disk 5 connected to drum 3 and under the action of spring 16, while rotating which disk in the opposite direction, finger 13, the entrance to the socket on disk 5 removes the drum from the hook tim to the handle.

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