SU1244323A1 - Milling drum - Google Patents

Description

The invention relates to machines for the extraction of peat, and more specifically to milling drums for surface layer milling of a peat deposit.

It is known a device for milling anvil of a peat deposit, containing a working body, g made in the form of disks mounted on a shaft with flat curved knives fixed on them, arranged along a helix of a npocTpaifCTBBHHoro cylinder,: formed by rotation of the disks, dividers, frame with basic skating rinks,, - transmission and hook-on device P,

The closest to the invention is a milling drum, including sections of cutters with cutting elements mounted on a frame with supporting rollers and transmission units 12.

A disadvantage of the known devices is the impossibility of obtaining a uniform profiled layer of milled peat, which increases the duration of its essence.

The purpose of the invention is to reduce the drying time of milled peat by increasing the homogeneity of the fractional composition and creating the profiled surface of the milled crumb.

The goal is achieved by the fact that in the mill. The drum unit, which includes cutter sections with cutting elements mounted on the frame with support rollers and transmission assemblies, cutter sections are made of parts on each of which cutting elements are fixed, while the cutting edges are located on oppositely directed helix lines, and the yaga ratio is helical the lines to the diameter of the cutter sections at the ends of the cutting edges range from 0.17 to 0.22, and the cutting edges of knives with a horizontal plane make an angle of / 40-45.

FIG. 1 shows a diagram of a milling drum, top view; in fig. 2 - installation diagram of knives; in fig. 3 is a section A-A in FIG. 2; in fig. 4 is a section BB in FIG. 2; n FIG. 5 - section bb In FIG. 2.

The milling drum consists of a frame 1, connected with the help of a hitch 2 with a tractor-tractor 3, support rollers 4 and 5 and a working

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organ-helical milling cutter, made in the form of 6 separate sections 7 and 8 fixed in bearing supports 6 each sections 7 and 8. Each section of the milling cutter in turn,. consists of individual successively alternating parts 9, 10 (section 7). and 11, 12. (section 8) with the opposite direction of the helix of the knives. In this case, adjacent parts of adjacent sections of the cutter also have the opposite direction of the helix of the knives ...

The milling drum can have several pairs of sections with a different number of parts in each of them.

The sections of the cutter are mounted on a common shaft 1.3, which is driven into rotation from the tractor's power take-off shaft with the casing 14 covered by a casing 14, through the transmission 15.

 . Parts 9-12 of Canada, the section of the helical milling cutter are related to the pitch of the helical line (t) to the diameter of the milling cutter (D) at the ends of the cutting edge t / D 0.17-0.22 5 while the cutting edge is formed by the front face of the screw surface angled f 40-45 ° to the horizontal plane.

The milling drum works as follows.

During the movement of the tractor-gacha 3 along the peat deposit, rotation from the tractor's power take-off shaft is transmitted through transmission 15 to shaft 13, 5 of the driving section 7 and 8 of the helical milling cutter. .

When rotating sections of the screw fre-. The bursts consisting of separate successively alternating parts 9-12 with the opposite direction of the helix of the knives, cut peat, falling between the knives, moves in the direction of the helical lines of each part 9-12, forming the comb profile of the spreading mill

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At t / D 0.17-0.22 and the cutting angle Jb 40-45, the fractional composition of cut peat is the most common.

Rod — particles with a size of 3.0–7.0 mm make up 70–80% of the total mass, while their moisture content (including profiled bedding) after a 2-day drying cycle decreases from 72.7

before .

The application of the invention reduces the time for drying milled peat.

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Compiled by I. Sinitska Editor M, Tovtin Tehred N. Bonkapo Proofreader. Reshetnik

Order 3792/35

Circulation 470 Subscription VNIIPI USSR State Committee

for inventions and discoveries 113035, Moscow,, Raushsk nab., 4/5

Production and printing company, Uzhgorod, ul. Project, 4

Claims (1)

MILLING DRUM, which includes sections of milling cutters with cutting elements mounted in a frame with track rollers and transmission units. characterized in that, in order to reduce the drying time of milled peat by increasing the uniformity of the fractional composition and creating a profiled surface of the milled chips, the milling sections are made of parts, on each of which the cutting elements are fixed, while the cutting edges are located along opposite helical lines, and the ratio of the pitch of the helix to the diameter of the cutter sections at the ends of the cutting edges is in the range from 0.17 to 0.22, and the cutting edges of the knives with a horizontal plane with nent angle> = 40-45 SU „„ 1244323 A1 • 1244323