RU2777674C1 - Flat raft unit - Google Patents

Abstract

FIELD: logging production.

SUBSTANCE: invention relates to logging production. A flat raft unit contains rows of round timber stacked on lower transverse spacers, upper transverse spacers superimposed on top of round timber rows. The ends of the lower and upper transverse spacers, previously pressed along the entire length to the round timber in the rafting machine, are pulled together by rafting rigging. The rigging includes two rings with a ribbed inner surface for attaching to cross spacers. The rings are interconnected by means of chains through a turnbuckle equipped with lock nuts.

EFFECT: reduced labor costs for the manufacture and disassembly of the raft unit and the possibility of mechanizing this process.

1 cl, 4 dwg

Description

The invention relates to logging production, in particular, to the alloy of timber, namely to flat raft units.

A flat rafting unit is known (Handbook of water transport of the forest. M .: Goslesbumizdat, 1952. S. 227-229) containing rows of round timber laid on the lower transverse spacers, upper transverse spacers superimposed on top of the rows of round timber. The ends of the lower and upper transverse spacers are tightened with clamps threaded into notches. In the middle of each lower transverse spacer, through clamps are attached, which are brought up between the round timber and fixed to the upper transverse spacers. Taken as a prototype.

The disadvantages of this flat raft unit are the complexity of the design and the high complexity of manufacturing.

The problem to be solved by the invention is to simplify the design and reduce the complexity of manufacturing a flat raft unit.

To solve this problem in a flat rafting unit containing rows of round timber stacked on the lower transverse spacers, upper transverse spacers superimposed on top of the rows of round timber, according to the invention, the ends of the lower and upper transverse spacers, preliminarily pressed along the entire length to the round timber in rafting machine, pulled together by rafting rigging, which includes two rings with a ribbed inner surface for fastening to transverse spacers, interconnected by chains through a turnbuckle equipped with lock nuts.

The tie-down of the ends of the lower and upper transverse gaskets with raft rigging, which includes two rings with a ribbed inner surface for fastening to the transverse gaskets, interconnected by means of chains through a turnbuckle equipped with lock nuts, makes it possible to exclude the device of notches at the ends of the transverse gaskets, the installation and tension of clamps, and, consequently, the complexity of manufacturing a flat raft unit is reduced. Preliminary pressing of the transverse spacers along the entire length to the round timber in the rafting machine makes it possible to exclude from the design of the flat rafting unit through clamps attached in the middle of each lower transverse spacer, brought up between the round timber and fixed to the upper transverse spacers, as a result of which the design of the flat rafting unit is simplified. units and reduces the complexity of its manufacture.

In FIG. 1 shows a diagram of a flat raft unit, front view; in fig. 2 – the same, top view; in fig. 3 – the same, side view; in fig. 4 - scheme of raft rigging.

The flat raft unit contains rows of round timber 1 laid on the lower transverse spacers 2. On top of the rows of round timber 1, upper transverse spacers 3 are superimposed. ribbed inner surface for attaching to the bottom 2 and top 3 cross spacers. Rings 5 are interconnected by means of chains 6 through a turnbuckle 7, equipped with lock nuts 8.

The flat raft unit is assembled as follows. Lower transverse gaskets 2 are placed in the rafting machine, on which rows of round timber 1 are laid. After laying the required number of rows of round timber 1, upper transverse gaskets 3 are placed on top of them. Then the lower 2 and upper 3 transverse gaskets are pressed along the entire length to the round timber 1 , the ends of the lower 2 and upper 3 transverse spacers are pulled together with raft rigging 4 by passing the ends of the lower 2 and upper 3 transverse spacers into rings 5 with a ribbed inner surface. The chains 6 of the raft rigging 4 are tensioned with the help of a turnbuckle 7, which, after tensioning the chains 6, is fixed from untwisting with lock nuts 8. After tightening the ends of the lower 2 and upper 3 transverse spacers, the force of their pressing against the round timber 1 is removed.

Disassembly of a flat raft unit is carried out as follows. The locknuts 8 are unscrewed, the tension of the chains 6 of the raft rigging 4 is loosened by means of a turnbuckle 7. Rings 5 are removed from the ends of the lower 2 and upper 3 transverse gaskets. The upper transverse gaskets 3 are removed, the rows of round timber 1 are unloaded and the lower transverse gaskets 2 are removed.

Such a design of a flat raft unit will reduce labor costs for its manufacture and disassembly and ensure the mechanization of these processes.

Claims (1)

A flat rafting unit containing rows of round timber laid on the lower cross spacers, upper cross spacers superimposed on top of the rows of round timber, characterized in that the ends of the lower and upper cross spacers, previously pressed along the entire length to the round timber in the rafting machine, are tightened raft rigging, which includes two rings with a ribbed inner surface for fastening to transverse spacers, interconnected by means of chains through a turnbuckle equipped with lock nuts.

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