SU1754636A1 - Safety device for cable winch barrel - Google Patents

Abstract

This invention relates to lifting devices. The safety device contains a tracking mechanism including a sleeve 1, a reinforced 8 shell 2 of the drum 3, and a spring-loaded rod 4 mounted in the sleeve 1 with the ability to interact with the control turn of the rope 6 on the drum 3. The safety device also contains an actuator that includes a permanent magnet 8 and the contact rpynhy included in the cable drum drive electric chain 3. The end of the rod 4, facing the control turn of the rope 6, is provided with a plate 7 on which a permanent magnet 8 is attached. Comp act group is mounted in the base of the sleeve 1 to cooperate with a plate 7.Vtulka 1 is made of a nonmagnetic material. 1 il.

Description

UNION OF SOVIET. SOCIALIST REPUBLIC ₍ .,> SU ₍₁₁ > 1754636 A1 (51) 5 B 66 L 1/54

STATE COMMITTEE

BY INVENTIONS AND DISCOVERIES UNDER SCSTAN OF THE USSR

DESCRIPTION OF THE INVENTION I

TO COPYRIGHT CERTIFICATE (21) 4850990/11 (22) 06/15/90 (46) 08/15/92. Bull. No. 30 (71) Odessa Production Association of Heavy Crane Building named after January Uprising (72) E.M. Gorodetsky and E.M. Sutskever (56) Copyright certificate of the USSR No. 469659, cl. B 66 p 1/54, 1973.

(54) SAFETY DEVICE FOR A ROPE WINCH DRUM (57) The invention relates to hoisting devices. The safety device includes a follower mechanism, including a sleeve 1, mounted in a

-. 2 l / _: gull 2 drums 3, and a spring-loaded rod 4. mounted in sleeve 1 with the possibility of interaction with the control loop of the rope 6 on the drum 3. The safety device also contains an actuator. including a permanent magnet 8 and a contact rpynhy included in the electrical circuit of the drive of the cable drum 3. The end of the rod 4, facing the control coil of the rope

6, is equipped with a plate 7, on which a permanent magnet is fixed 8. The contact group is installed in the sleeve 1 with the possibility of interaction with the plate

7. The sleeve 1 is made of non-magnetic material. 1 ill.

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electrical insulating strip 14 at the end of the drum 3. The second screw 11 is connected to the mass (drum 3).

The device operates as follows.

When winding the rope 6 from the drum 3, the control loop breaks away from the stream. In this case, under the action of the spring 5, the rod 4 with the magnet 8 moves in radial | towards the center of the drum 3. The plate 7 closes the group of contacts 11, the electrical circuit of the drive of the drum 3 of the winch is turned off (shown by a dotted line).

When the drive of the drum 3 is turned on by ί, the winding rope 6 is laid in a stream. The magnet 8 is contactlessly attracted to the ferrite. The invention relates to lifting devices, namely, safety devices to prevent the rope from completely winding off the winch drum.

The purpose of the invention is to increase reliability and simplify the design.

The drawing shows a safety device, a cut.

The safety device includes tracking and actuating mechanisms.

The tracking mechanism is made in the form of a sleeve 1, mounted in the shell 2 of the drum 3 and the rod 4 with a spring 5,

The rod 4 is installed in the sleeve with the possibility of axial movement and non-contact interaction with the control loop of the rope 6 on the drum 3. The end of the rod 4 facing the control loop of the rope 20 11). In this case, the interrupt circuit 6 is equipped with a plate 7, on which a permanent magnet 8 is fixed.

The force of the spring 5 is chosen less than the force of the magnetic field of the permanent magnet 8..

The contact group is installed in the base of the sleeve 1 with the possibility of interaction with the plate 7 of the rod 4. '

The sleeve 1 is made of non-magnetic material. The thickness of the side walls of the sleeve 1 is selected from the condition of preventing the interaction of the magnet 8 with the walls of the shell 2 of the drum 3.

The profile adjacent to the rope 6 of the jumper 9 of the sleeve 1 perform an equidistant profile of the creek of the drum under the rope 6. The thickness of the jumper 9 of the sleeve 1 is made minimal to ensure reliable contactless interaction of the magnet 8 with the rope 6.; '.d- · ..'- · -.

* With the help of the adjusting nut 10, the spring force is set to 5 with the same attractive force of magnet 8.

, The actuator contains a contact group, made in the form of 45 on which the aforementioned magnet is fixed, and two electrical contact screws 11 installed in the threaded holes of the base 12 of the sleeve 1, a permanent magnet 8. One screw 11 of the contact group Сёёднен with the current collector 13, installed using the result , under the action of the magnetic field I, to the magnetic rope 6, and the plate 7 with the rod 4 moves away from the contact group (screws are screwed. '

Thus, the reliability of the device is increased and its design is simplified. .

Such a design for 25 Such a design allows you to combine the functions of the tracking and actuating mechanisms. .

Claims (1)

Claim 30 A safety device for a cable winch drum, comprising a follower, including a sleeve fixed in the shell of the cable drum, and a spring-loaded rod mounted in the sleeve with the possibility of interaction with the control loop of the rope on the drum, and an actuator, including a permanent magnet and a contact group included in the electric circuit of the cable drum drive, characterized in that, in order to increase reliability and simplify the design, the end of the rod facing control CB rope coil is provided with a plate, said relay group configured by two screws mounted in the base of the sleeve to cooperate with a plate rod, which sleeve 50 is made of a nonmagnetic material.