SU1733359A1 - Arrangement for fastening rope of timber raft - Google Patents

Abstract

Use: on the timber rafting when securing and releasing the rafts in the place of their formation. SUMMARY OF THE INVENTION: Includes a case of two cheeks 1 connected by a nut 2 and a wedge stop 3. The arm 4 is installed in the case with the possibility of its rotation on axis 5. One of the arms of the rocker arm interacts with the locking device in the form of a screw joint containing a rod 6 with a ball 7 To attach the working rope to the device for securing and returning the rafts, a finger 9 is provided, which is located in the openings of the cheeks 1. 2 Il.

Description

The invention relates to the water transport of the forest and can be used on timber timber when securing and returning rafts to the place of their formation.

The aim of the invention is to improve the reliability of the device.

FIG. 1 shows the device, a general view; in fig. 2 - device, section.

The device for securing and returning the raft includes a case of two cheeks 1 connected by a nut 2 and a wedge stop 3. The arm 4 is installed in the case so that it can rotate on axis 5, One of the arms of the rocker arm interacts with the locking device in the form of a screw joint containing a rod 6 with ball 7 and nut 2, the elevation angle of the thread in which is equal to the friction angle. In this case, the force when opening the locking device under load will depend only on the friction of the ball rolling 7.

To prevent inadvertent actuation of the screw connection, a lock in the form of a handle with a shank 8 is provided, which is attached to the housing.

To attach the working rope to the device for securing and returning the rafts, a finger 9 is provided, which is located in the openings of the cheeks 1.

The loop of the other rope is inserted into the socket formed by the wedge projections of the rocker arm 4 and the stop 8.

Before putting into operation one loop of the steel cable is attached to the device with a finger 9, and to attach the other loop open the nest by turning the knob 8, which interacts with the screw connection rod 6, the axial movement of which frees the rocker arm 4. By reverse rotation of the knob 8 the rocker arm 4 brings the working position. Wherein

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wedge ledges of the rocker arm 4 and the stop 3 are compressed.

When a load is applied from the raft, the rope interacting with the wedge protrusions creates a shear force.

When the locking device is actuated by turning the rod 6 by means of the handle 8, the rocker arm 4 is rotated, the nest is opened and the loop of the load rope leaves the wedge projections. The disconnection of the cargo ropes occurred.

To ensure the safety of the workers, the turning of the knob 8 can be carried out remotely, for example, with a hook.

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Claims (1)

Apparatus of the Invention A device for securing a raft-raft rope comprising a body with a retaining element for the rope and a locking mechanism connected to the rope, which is distinguished by the fact that, in order to increase the reliability of the device, the retaining element is designed as a rocker arm with a wedge protrusion with the ability to interact with a locking mechanism that includes a screw, one end of which is made with a roller, and the other with a lock, made in the form of a handle with a shank.