RU2028267C1 - Raft - Google Patents

Abstract

FIELD: wood industry. SUBSTANCE: rufting elements consisting of full-length log bundles are arranged in the form of a circle and tied together with the aid of rigging means and flexible ties. The rafting elements are placed radially with the full-length log top points directed to the center of circle. EFFECT: improved conditions for drift floating without stoppage at banks. 6 dwg

Description

 The invention relates to timber rafting, in particular to the field of transportation of whip bundles.

 A raft is known that contains raft units from whiplash bundles stacked by buttocks in different directions and connected by forming rigging and flexible ties.

 The drawback of the raft is the need to use towing traction for its melt.

 A round raft is also known, containing raft units from bundles connected by forming rigging and flexible ties.

 This raft does not require towing.

 However, its disadvantage is the small useful volume of the raft, as well as operational unreliability during self-alloying.

 The purpose of the invention is the elimination of these disadvantages.

 The goal is achieved by the fact that in a known raft containing raft units from whiplash bundles arranged in a circle shape and connected by forming rigging and flexible ties, raft units are located radially, while the tops of the whips are located in the center of the raft.

 Compared with the prototype, the claimed proposal is characterized in that the raft units are located radially, while the tops of the whips are located in the center of the raft.

 In FIG. 1 shows a raft of whip bundles, top view; in FIG. 2 is a section AA in FIG. 1; in FIG. 3 - section of a single-row raft, side view; in FIG. 4 - section of a double-row raft; in FIG. 5 - the final stage of the formation of the raft; in FIG. 6 - connection of whiplash bundles with a flexible connection.

 The raft contains raft units of whip bundles 1, whose whips are stacked with their vertices in one direction and are tied with a forming rigging 2 (strapping wire). The bundle must have at least two strands placed at its ends.

 In this particular case, each bundle has three strands (pos. 2, in Fig. 2) - two at the edges and one in the middle of the bundle.

 Raft units 1 are located in the raft radially, with the apical part toward the center of the raft, forming a raft in the shape of a circle. Ranged units (whip bundles) are interconnected by flexible connections 3 in the form of a steel cable, called a lay.

 The cable-stay 3 is passed under the harnesses 2. At the same time, one cable-stay 3 connects the whip bundles in their apical part and the other in the butt (Fig. 6). The last wire rope is called an airborne bed.

 The formation of the raft is as follows.

 The laying of whip bundles 1 in a round raft is carried out in a winter raft (a specially designated area of a reservoir with ice cover) using winter raft units equipped with jaw grabs or tractor pushers that discharge bundles from auto-carts.

 Ranged units by the indicated aggregates are stacked on ice sequentially close to each other radially - with their vertices towards the center of the circle, while with a single-row raft, bed 3 is passed through the top of one beam and the bottom of an adjacent beam, etc. (Fig. 3).

 With a double-row raft, two beams are first stacked side by side, the third packet is stacked on top between them (Fig. 4).

 Certain difficulties arise when laying the last 2-3 beams when a narrow round raft sector remains empty of wood (Fig. 5). In this case, the timber carrier 4 is reversing into the sector and the package of gaskets is pulled by tractor winches 5 to the installation site. After completion of the formation of the raft by raft units, the free ends of the bed 3 are fastened together.

 The operations to form subsequent rafts are repeated in the described sequence. Self-alloyed rafts are smelted to the consumer or reloading point. When transporting the raft by self-alloy, due to its round shape, the raft easily fits into the relief of the river bed, is less susceptible to stops along the coast and more easily overcomes coastal obstacles, as if rolling over them, which significantly reduces the accident rate during sinking.

 Since the draft of the raft from its edges to the center decreases, this facilitates its removal from the shallows, rifts, etc.

 Thus, the design of the raft allows for trouble-free delivery of wood in the whips without tracking the fleet.

Claims (1)

 A raft containing raft units from whip bundles arranged in a circle shape and connected by forming rigging and flexible ties, characterized in that the raft units are located radially, with the tops of the whips located in the center of the raft.

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