RU2476366C2 - Device for landing flat raft sections - Google Patents

Abstract

FIELD: transport.

SUBSTANCE: invention may be used in forestry, particularly, for landing timber. Proposed device comprises load handling frame equipped with supports with load handling hooks are arranged at the distance between then equal to arrangement of two top rafter plates of one-row flat raft section, and at distance equal to length of formed top row of two-row flat rafter plate. Note here that said hooks are furnished with load handling slings with choker hooks.

EFFECT: faster load handling mechanism operation in landing.

3 dwg

Description

The device can be used in the forest industry, in particular in the water transport of timber, mainly on raids of float of timber enterprises during crane unloading of timber from water to the banks of rafting rivers.

Known technical solutions for copyright certificates (AS No. 906879, AS No. 945035, AS No. 2203845, USA patent No. 4044893) containing a rope system, a gripper, rail tracks, traction organs. The main disadvantage of these technical solutions is the lack of an effective gripping device for lifting flat raft units from the water.

The closest in technical essence is a device (application No. 2826823 / 29-11, 16.10.79) containing a gripping device, a rope system, traction bodies. The main disadvantage of this technical solution is the limited technological capabilities when working with load cells of different overall dimensions.

The technical result is the expansion of the technological capabilities of crane unloading flat raft units of various designs and lengths from water to shore.

This goal is achieved by the fact that the proposed device for unloading flat raft units from water to shore consists of a load gripping frame equipped with consoles, on which load gripping hooks are fixed with the possibility of placing them at a distance between each other, equal to the location of the two upper strands of a single-row flat raft unit, and also with the possibility of placing them at a distance equal to the length of the formed upper row of a two-row flat raft unit; Lanyards with choker grips.

A device for unloading flat raft units (one-, two-, three-, and four-row) is illustrated by drawings, in which Fig. 1 shows a device for unloading flat raft units from water, in Fig.2 - a method of unloading a single-row flat raft unit, in .3 - a method of unloading a two-row flat raft unit.

The present invention (Fig. 1) consists of a load-gripping frame 1, additionally equipped with consoles 2, on which load-gripping hooks 3 are fixed, with the possibility of placing them at a distance between themselves, equal to the location of the two upper strands of a single-row flat raft unit 6, as well as with the possibility of placement them at a distance equal to the length of the formed upper row of a two-row flat raft unit 6, while load-gripping slings 4 with choker grips 5 are installed on said hooks.

Unloading of flat raft units from the water to the shore is carried out by a tower crane 7 in order, depending on their design (one-, two-, three-, four-row) and crane capacity as follows.

A single-row flat raft unit 6 (Fig. 2), two loaders start with hooks in a floating discharge yard on a rafted river, installing it in the zone of operation of a coastal tower crane. Loaders remove four chain ties 10 at the corners of a flat raft unit and hook two side logs 8 and 11 with hooks under the raft unit to the upper strapping 9. Then the crane operator lowers the load gripping frame 1 in the center of the raft unit, where the loaders install 2 frames 1 on the consoles four cargo hooks 3 with load gripping slings 4 and choker grips 5 at a distance equal to the location of the two upper strapping 9 of a flat raft unit. On sagging four slings, the loaders form a gap with wooden stakes in the transverse logs of the logs, where the load-lifting slings 4 are threaded with curved hooks, which tie the flooded dense logs 8 and 11 at first from one side of a flat raft unit, and then similarly from the other. With a crane 7, a flat raft unit 6 is lifted from the water and loaded onto the shore (receiving overpass, timber pile, timber transport).

A two-row flat raft unit 6 (Fig. 3) takes two loaders with hooks into the unloading yard, where the upper strapping 9, chain ties 10 are removed from it and two extreme logs 12 are rolled into the center of the upper row of the flat raft unit, which are fixed with synthetic rigging. The crane operator lowers the load gripping frame 1 in the center of the floating forest load, on which the loaders on the consoles of the frame 2 install four cargo hooks 3 at a distance of the length of the formed upper row of the flat raft unit and grab two logs 13 from the bottom row of the flat raft unit with slings 4 with choker grips 5. With a crane 7, the upper row of logs of a flat raft unit 6 is lifted from the water and loaded onto the shore, and then the lower row of logs from the water is unloaded using the technology described above.

Three-row and four-row flat raft units are unloaded by crane from the water to the shore in layers, similarly to two-row flat raft units 6.

As a result of the use of this device, the time for reconfiguring the operation of the load-lifting mechanism when unloading flat raft units of various types and sizes in length from the water to the shore is reduced.

Claims (1)

A device for unloading flat raft units from the water to the shore, consisting of a load gripping frame equipped with consoles, characterized in that load gripping hooks are fixed on the load rails of the load gripping frame with the possibility of placing them at a distance between each other equal to the location of the two upper strands of a single-row flat raft unit, and also with the possibility of placing them at a distance equal to the length of the formed upper row of a two-row flat raft unit, while the hooks are mounted on said hooks e slings with choker grips.

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