SU45398A1 - Nutrient roller for sawmill frames - Google Patents

Description

Due to the solid weight of the upper nutrient rollers and the weight of the log itself, there is considerable pressure on the teeth of the lower nutrient rollers, due to which these teeth are pressed into the wood of the log. In this case, a sufficient adhesion force is created between the feeding rollers and the sawn log, and thus it is possible to feed the log to the saws, overcoming the simultaneously acting backward reactive forces resulting from sawing.

, from cutting resistance by saws. gg; Jlo as the work of the forest tree sharpen; The teeth of the feed roller rings become dull and wear out, which reduces the slip coefficient and increases the slipping of the log on the feed rollers, which is why individual rings have to be replaced with new ones. In addition to this natural wear

teeth nutritional rollers coefficient | slip decreases significantly: as a result of the accumulation in the intervals between the teeth of the sawdust rings produced during sawing, bark from the briar, moisture and ice (in winter), which are strongly compressed by the weight of the log and the upper feeding rollers.

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This layered mass, accumulated and creating a slippery surface, reduces the grip of the log with the nourishing rollers and increases the slip.

Since the mass is strongly pressed to the surface between the teeth, its removal becomes extremely difficult and causes unnecessary stoppages of the forest, reducing the productivity of the latter. In order to eliminate this harmful phenomenon, rings are proposed that make up the nourishing roller, to supply, in addition to conventional teeth, wedge-shaped parts between them, having bevels from the median plane of the ring to its end surfaces, which are designed to remove foreign bodies under pressure from the log. clogging the gaps between teeth.

In FIG. 1 shows a cross-section of a nutritional roller in which the proposed device is applied; FIG. 2 - then zhg side view; FIG. 3 is a side view of a feed roller ring; FIG. 4 - the same front view; FIG. 5 is also in section along the line I-1 in FIG. 3

The dial-up rings 7 of the lower feeding rollers, in which the proposed device is applied (Fig. 1-5), are fixed on the roller axis with iHffc-aBiiiawiSSMia; ..: --- The key is 3. On the periphery, each hole / is provided with teeth 2, between which there are wedge-shaped parts 3, which have slopes ab (Fig. 5) and be from the median plane of the ring to its end surfaces ad and se towards the roller axis. The ribs b of parts 3 are located below the fg edges of the tops of the main teeth of the ring, about 3-5 MM.

The sawn log, falling on the feeding roller and being pressed to it by the force of its own weight and the weight of the upper feeding roller, presses its wood into the tops of the teeth 2. At the same time, the edges b of the wedge-shaped parts 3 are also pressed into the wood. Due to the presence of wedge-shaped parts 3 with inclined bevels ab and be accumulated sawdust, bark, ice, etc., by pressing the sawn log itself and, of their own weight, are removed along these bevels to the edges of each ring / into the gaps 6 formed by two adjacent roller rings from where these foreign bodies are continuously cleaned when the feeding roller turns, with fixed scrapers 4 (Fig. 1, 2) fixed on the frame frame.

due to the presence of a wedge part 3 with bevels ab and be fed

Straight rollers to the top of the ring teeth can be kept clean and unaltered; I can be pressed into the log passing by him, and he grips well with it. ;

The subject invention.

Claims (2)

1. A feed roller for sawmill frames, characterized in that the rings, besides the usual ones, of teeth 2 are provided with wedge-shaped parts 3 between them, having bevels ab and be from the median plane of the ring to its end surfaces ad li c in the direction to the roller axis, for which parts 3 edge b is somewhat deepened in relation to the edges fg of the main teeth, and the most; Parts 3 are designed to remove ab and be along the bevels, under pressure from the log and from their own weight, sawdust, bark, ice and other similar foreign bodies clogging the gaps between teeth 2 and the rings themselves .: 2. In rollers according to claim 1, use of stationary scrapers 4, placed in the intervals between the rings and the roller, and serving to remove foreign parts from the said intervals.  .. .- --.:-. By copying the testimony of G. A. .: .. .--. ..- .. :: -, -: J, .i --.-; -C - l; -; G, FIG. 5. F -, I f, .-. Andreeva X “45398 ig. four