FI107030B - Disk cutter - Google Patents

Description

107030

RISSAKATKOJA

5 The use of small wood as heating fuel in ovens or the like requires treatment by sawing and chopping or by chipping. The most traditional way of making firewood chopped 1. for firewood used in the furnace and the like is to cut the wood to a suitable length and, if necessary, to split it.

10 Development has brought many new solutions to this work. The jigsaw has been replaced by a variety of circular saws and cutting shears, similar to scissors, which often involve splitting the valves during cutting.

The press-fit solution has many good features, but the drawbacks are the high power requirement of the device 15 and the resulting bulking of the cutting device, easily breaking "stick", which can cause inconvenience and minor hand injuries in valve handling and is also aesthetic disadvantage. In addition, especially when cutting unformed trees, it has been found that the chopping wood may turn sharply during cutting, posing a safety risk.

In the solution of the present invention, the shear force is significantly reduced compared to: in a device operating like a cutter. This allows for a smoother, lighter and more affordable structure. Cutting blades stay sharp longer.

The features of the invention are apparent from the claims.

Figures 1 and 2 show an embodiment of the present invention.

Figure 1 schematically shows a partially sectioned embodiment of a ratchet chopper. The Framed body 1 is fixed to the timber 4 controlling the feed table January 2 30 rectangular hole of the frame 6, the both edges of the guide rails 5 are made with the control rissaterä 3 travels force of the hydraulic cylinders 7 and 8, the arrow A indicated range.

2 107030

The riser blade 3 is made of two almost identical plates 9 and 10, between which slots 13 and 14 are freely rotatable by pins 11 and 12. They are of thin construction, in this case about 10 mm, made of high-strength steel and thinned out conically. suitably sharpened. The gap between the plates 9 and 10 is made such that its free outer part forms with the part S a sufficiently precise guide to control the movement of the blade 5, and the inner surfaces of the plates guide the cutting tracks 13 and 14 in the axial direction. Rissaterään 3 is also made of the wedge 13. Rissaterän 3 pushed forward down the cutting wheel 13 and 14 intersect the timber 4, while the wedge 15 penetrates the cleavable klapiin bisecting it, while supplying the horizontal plane klapin halves leikkuurissoihin 3 concluded a result of the motion 13 and 14 Rissaterän arrow is switched off and split the valve at the same time. The cut is smooth, has no sticks 10 and is aesthetically pleasing and safe to handle. The outer blades 16 and 17 can be used to cut thicker trees that are not suitable for rattling.

Structurally, the riser chopper according to the present invention can be modified in many different ways: 13 - The diameters and other dimensions of the risers can be adapted for different applications.

If you do not necessarily want the wood splitting, the key 15 may be omitted.

- If desired, it can be used, for example, as a cutting machine for a forest harvester, whereby the rasp blade is constructed on a scissor-shaped frame, which enables the cutting of wood to be cut from the side.

In simple cutting, additional shears can be made at a suitable position on the feed table 2 and the wedge 15 is omitted.

• i * *.

Fig. 2 schematically illustrates an embodiment of a ratchet chopper for the joint use of a tractor with a suitable hydraulic output and a trailer thereof. A tractor 20 with a trailer 21 and a draw bar 23 are attached to its drawbar, which receives its hydraulic drive and control 25 from the tractor hydraulics. The trailer 21 is provided with a suitable conveyor which transports the cut and split valves to the trailer. In this solution, the severable struts 4 are manually fed to their slits. If necessary, a separate feeder can also be connected to the system.

Risper chopper can easily be used in a wider range for small tree repair: 30 - It can be used as a cutter for a harvester-like machine for small tree repair. In this case, the grapple attached to the 3 107030 tractor or similar lifting device can dump and produce ready split splits, for example on the tractor trailer.

- It may be installed as part of a "fixed" valve manufacturing unit.

Claims (2)

1. A wood cutter cutter, characterized in that a feed table (2) for controlling wood (4) to be cut is attached to a ring-structured frame (1). To the rectangular opening (6) of the frame (I), to its two stripes, conduits (5) have been made which control the movement of the blade (3) by means of hydraulic cylinders (7 and 8) over the distance shown by arrow A. The blade (3) is made of two nearly identical plates (9 and 10), between which are stored free-rotating cutting blades (10 and 14) by means of 10 pins (11 and 12). The construction of the cutting blades is thin, the material is rigid, and from the outer frame they have been thinned conical. They have been sharpened appropriately and the distance between the plates (9 and 10) has been left suitable so that the free outer member together with the member (5) forms a sufficiently precise conduit to control the movement of the pulley blade. The inner surfaces of the plates guide cutting edges 15 (13 and 14) in the axial direction. A wedge (15) has also been manufactured to the blade. While the cutter blade (3) goes down and the cutting blades (13 and 14) cut the wood (4) to be cut, the wedge (15) penetrates into the splitting club, splits it and simultaneously introduces half the horizontal bars to the cutting blades (13 and 14). ). After performing one of the movements (arrow A) shown, the pulley blade (3) has cut 20 and smoothly splayed the club 2. Knife cutter according to claim 1 for cutting firewood or other known: * · closable material, characterized in that the cutting of the wood takes place by pressing I + n piece cutting blades (13 and 14) with a suitable control at the breaking point of wood or other closable material to be cut until interruption has been made, and that the cutable piece has been supported by the guide (2) or a guide, also provided with suitable cutting blades, and the guide is extended by means of leads or rotary links, which permit insertion of the cutting wood or other closable material from the side, and the cutting motion is driven by hydraulics, pneumatics or in some other known manner. • · #