FI71163B - LAOGFRAESUTRUSTNING FOER BITTORVMASKIN - Google Patents

Description

71163 1 The invention relates to a separate low milling machine to be mounted on a milling disc type piece of peat.

Peat production in our country takes place with machines that lift the peat considerably deeper than the surface. On these machines, the lifting depth is not adjustable, but always lowers to its lowest position.

However, there is a need for a lower lifting machine. This need is made up of frost and low production fields in the phase of peat production cessation. Frost is a disadvantage across the country when production begins in the spring of 15. Frost is the worst problem in Northern Finland, where it is often still present after Midsummer.

The equipment according to the invention is intended for a piece peat machine in which the peat is guided to the transfer screw by means of a feed arc. When driving in frost-20 or low fields, replace the milling disc on the machine with a smaller diameter low milling disc. At the same time, the feed arc on the machine is replaced by a smaller-radius low-cutter feed arc that is made to fit the attachments of the original arc.

25 The blades on the circumference of the low milling disc are wider than in a normal disc. In this way, the output of the machine can be kept the same, even though the cutting depth of the milling disc has been reduced.

The sharpening force of the low milling disc is higher than that of the normal disc due to the smaller diameter of the 30 low milling discs. On the other hand, the frost resistance is lower at the intake depth of the low milling disc than at the intake depth of the normal disc. The compensating factor is the larger diameter blades of the low milling disc, which keeps the power and output required by the machine the same as when driving a machine with normal equipment in a frost-free field.

In the accompanying drawing, Fig. 1 shows a side milling according to the invention, Fig. 2 a milling view from the rear and Fig. 3 a milling view from the rear. Figure 1 shows how the diameter of a normal milling disc 2 is larger than the diameter D1 of a milling disc 1 according to the invention. It can also be seen from Figure 1 that the normal feed arc 4 has a larger radius than the radius R 1 of the feed arc 3 according to the invention.

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Fig. 3, which shows the detail of Fig. 2, shows how the diameter of a normal milling cutter blade 6 is smaller than the diameter D1 of a milling cutter blade 5 according to the invention.

10 No changes need to be made to the return peat machine itself, as the low milling disc and arc fit the same attachments as a normal disc and arc. When the frost has melted or the machine is moved from a low field to a deeper field, the low milling equipment can be quickly changed to the original equipment.

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Claims (4)

Separate low-milling equipment for a peat peat machine, characterized in that the low-milling disc (1) and the low-milling feed arch (3) are interchangeable instead of the normal milling disc (2) and the normal feed arch (4) for the same fastenings. 1 Claims Low-milling machine according to Claim 1, characterized in that the diameter (D1) of the low-milling disc (1) is substantially smaller than the diameter (D1) of the normal disc (2). Low-milling cutter equipment according to Claim 1, characterized in that the radius (R 1) of the low-cutter ignition arc (3) is substantially smaller than the radius (R 2) of the normal arc (4). 3,71163 Low-milling machine according to Claim 1, characterized in that the diameter (D1) of the blade (5) of the low-milling disc (1) is substantially larger than the diameter (D1) of the blade (6) of the normal disc (2). 20 25 30 35