FI118032B - Pruning equipment and its feeder - Google Patents

Pruning equipment and its feeder Download PDF

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Publication number
FI118032B
FI118032B FI20031882A FI20031882A FI118032B FI 118032 B FI118032 B FI 118032B FI 20031882 A FI20031882 A FI 20031882A FI 20031882 A FI20031882 A FI 20031882A FI 118032 B FI118032 B FI 118032B
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FI
Finland
Prior art keywords
pruning
position
member
cylinder actuator
characterized
Prior art date
Application number
FI20031882A
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Finnish (fi)
Swedish (sv)
Other versions
FI20031882A (en
FI20031882A0 (en
Inventor
Timo Neuvonen
Original Assignee
John Deere Forestry Oy
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Priority to FI20031882 priority Critical
Priority to FI20031882A priority patent/FI118032B/en
Publication of FI20031882A0 publication Critical patent/FI20031882A0/en
Publication of FI20031882A publication Critical patent/FI20031882A/en
Application granted granted Critical
Publication of FI118032B publication Critical patent/FI118032B/en

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Classifications

    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01GHORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
    • A01G23/00Forestry
    • A01G23/02Transplanting, uprooting, felling or delimbing trees
    • A01G23/095Delimbers
    • A01G23/097Delimbers having a fixed delimbing head

Description

118032

HEATING EQUIPMENT AND ITS FEEDING BODY

The invention relates to a carding apparatus according to the preamble of claim 1 and to its feeder. The invention further relates to a pruning apparatus according to the preamble of claim 5 and to its feeder.

The harvester head is used to treat the tree trunks, the function of which is to grasp, cut the tree and cut it down vertically. The harvester head then cuts the tree trunk and cuts it to the specified lengths. The harvester head is usually attached by means of joints to the end of the forestry machine boom. In particular, the machine is a harvester which moves on the terrain by means of wheels or rollers. Some harrow heads are also used for loading machines and for loading the timber frame, which also has a pair of grapple pivots rotating relative to the frame structure across the tree frame. Blades that perform pruning can also act as grapples. One harvester head and a loading machine are disclosed in US 5186227. The harvester head comprises the necessary actuator means, usually hydraulic cylinders and hydraulic motors, by means of which the position of the harvester head and its various functions can be controlled.

The harvester head, also referred to as pruning equipment or tree trunking equipment, also has pruning members that are controllably rotated with respect to the frame structure. These are usually placed in pairs on different sides of the tree: Y: 25 trunk. The pruning members comprise pruning blades for pruning branches:: ··: while supporting and transporting the tree trunk through the plant. The harvester head may also have another pair of pruning members or individual ·· *. nen pruning body. The feeders usually comprise a hydraulic motor-driven traction sheave or track, which is guidedly pressed against the frame: v> 30 and pulls it past the pruning blades and through the equipment. Feeding members sil ..: usually paired on different sides of the tree trunk. Also placed in the end are '*: ** cutting tools, such as a chain saw, for felling and cutting: / ·:.

· «··· '• ·. · !: 35 Various types of harvester heads are known which are suitable for both tree trunks. \ pruning and handling during loading and unloading. One harvester head is disclosed in SE 507930 C2, 2 118032, the harvester head of which comprises wood bearing grabs with feed rollers disposed therein. The feed rollers can be repositioned so that they do not come into contact with the logs that are in the grapple during loading. For the same purpose, an apparatus 5 according to Fl 108606 B has been developed in which the position of the feed wheels is controlled by an actuator. The feed wheels can also be spaced apart from the grabs and the treatment of the tree trunks is handled by the same means as they are used for pruning, i.e. the pruning blade.

According to US 5,785,101, the feed wheels can be opened off the road during loading. Em. According to the publication, the position of the feed wheels is controlled by two cylindrical actuators, one of which enables the feed wheels to be raised significantly above the pruning blades.

15

However, the problem with prior art is inadequate maneuverability or, in particular, the complexity of the structures if large movements of the grabs or blades are required for loading and the feed members are moved far enough. Em. for example, one additional joint 20 and an actuator are needed in the publication to move the feed wheels at the ends of the arms sufficiently far to allow large opening of the pruning blades and to prevent the feed members from contacting the trunks.

• · • »* • · ·

It is an object of the present invention to overcome the above drawbacks. The pruning apparatus according to the invention and its feeding means are as set forth in claim 1. The pruning apparatus according to the invention. *. * And its feeding means are also presented in claim 5.

• · · • · • * · ··

One of the key principles of the invention is the utilization of existing actuators, supplemented where necessary by simple: * / fixed mechanisms, whereby the addition and control of actuators is not necessary.

• * • · * * In addition, the principle is to ··. * · * Caused by the same force effect of the actuator, for example, the effect of a cylinder lengthening or shortening movement: to change the function to another, essentially the opposite. The changeover results in, for example, a closing movement instead of an opening movement, or vice versa. In other words, when the harvester head is in the pruning position, the descending movement of the feed wheel changes into an upward movement, or vice versa.

5 In particular, the principle is the transfer sequence of the various organs of the harvester head which affects the operation of the above mechanism. The mechanism and operating sequence affect the normal actuators of the harvester head so that opening of the feeder at a sufficient distance from the tree trunk, grapple or pruning means is possible. The advantage is the simplicity and reliability of the structure 10, low weight gain and integration with normal actuators. By means of the invention, the possibilities of using normal actuators are expanded. Modification of known harvester heads according to the invention is easy, requiring, in one embodiment, mainly a change in actuator position or attachment point.

The following description illustrates the invention with reference to the accompanying drawings, in which: Figure 1 shows a partially stripped harvester head in which the invention is applied, and an initial step of the transfer sequence, • · Figure 2 shows a stripped harvester head and figure 1 of the transfer sequence: Y: 25 ·: Fig. 3 shows the harvester head of Fig. 1 in the loading position and · * · ': the final step of the transfer sequence, • · · Fig. 4 shows the harvester head of Fig. 1 in the pruning position, 30 • * · Fig. 5 an embodiment of the invention, and Fig. 6 shows another embodiment of the invention.

35 • · · *: *! Fig. 1 shows a pruning apparatus 1 partially stripped for the sake of observation, showing a trunk structure 2 located 4 118032 on the tree trunk to be treated, whereby the U-shaped arm 4 of the feeder 3 is secured by the joints 5 and 6. The feed member 3 in this embodiment comprises a roller rotated by the motor 7. In Figure 1, the horizontal harvester head 1 is ready for pruning 5 of the tree trunk. The fixing arms 4 and the feed members 3 are usually two symmetrically on each side of the tree trunk. The wood frame is thus gripped on opposite sides, while being supported and pressed against the frame structure 1. The wood frame moves in its longitudinal direction parallel to the axis of rotation X of the hinges 5 and 6. It may also be arranged that the feed member 3 is supported only by a single branched or monochromatic fastening arm 4 with only one hinge, unlike the bifurcated and double hinged U structure. The reference numerals in Figure 1 also apply to the corresponding parts in the other figures. An actuator 10, 15 in this case, is connected to the mounting arm 4 and the body 2 to provide the rotation position and the clamping force of the feed member 3. The cylinder 10 is secured to the torsion arm 11, spaced from the axis X, thereby providing a torque for turning the attachment arm 4.

The apparatus 1 also comprises a pruning blade 12, whose axis of rotation Y is substantially parallel to axis X of rotation. Pruning blade 12 and its pruning. . a pair of blades 8 is used to support and prune the tree trunk. One of the features of the equipment 1 • · · / is that it can also be used to load one or more of the: trunks, whereby the pruning knife grabs the trunks on the ground or in a stack and raises them to the desired location.

The apparatus 1 further comprises a mechanism 13 for moving the feeders 3 out of the way so that during loading, the feeders 3: ***: do not damage, limit the opening of the pruning member 12 or prevent the logs from being held by the pruning blades.

30 • · · w]. · *. In the embodiment shown in the figures, the mechanism 13 is implemented by means of "** rotating cams 14, 15, but can also be implemented in other ways. It is a principle of the mechanism 13 that the position of the cylinder 10 controlling the position of the that, depending on the lift · !: 35, the extension of the cylinder 10 causes either the closing movement of the feed member • «· 3 towards the tree trunk against which it is pressed or the opening movement of the feed member 3 away from the tree trunk allowing loading. in the case of the cylinder 10, the position of the cylinder 10 is interchangeable on both sides of the so-called dead center, which causes a different operation even if the cylinder 10 becomes longer in both cases. a trend that is transversely rotational with respect to the X, changes the direction of rotation of the feed member 3, even though it is the same linear motion that extends (or alternatively shortens) the cylinder 10. The opening of the feed member 3 shown in this specification can also be accomplished by a shortening cylinder. In this case, the torsion arm 11 is positioned so that at the point of death it is rotated 180 ° with respect to the position of Figure 5. The design of the torsion arm 11 and the joint 6 may need to be modified, or the cylinder 10 moved, to prevent collisions 15 and allow space for cylinder movement.

At its other end and its body 16, the cylinder 10 is secured to the body 2 by means of a joint 19 (Fig. 5) which allows the position of rotation of the cylinder 10 to rotate about a pivot axis Z passing through said pivot 19 and parallel to the pivot axis X. It should be noted that in Fig. 5 the feeding element 4 is drawn only as necessary. . so that only the torsion arm 11 is visible.

• * * • * · * * *: .v Cylinder 10 can be moved over the point of death (position Ä in figure 5) e.g.

• ♦: .v 25 with another actuator 20, as shown in Fig. 5, though · · · · · · · · · · · · · · · · · · · · · · ·:

• • · ·

According to one embodiment, no actuators or mechanisms are required to change the position 30 of the cylinder 10. After the cylinder 10 has been sufficiently shortened, the feed member 3 or some of its associated structure is pressed against the ground, for example, by applying a force to open the feed member 3. Feeding element 3 and at the same time cylinder "**: 10 move over the point of death (position A in Figure 5) and the function caused by the extension movement. ·! · 35 is reversed. Cylinder 10 is returned to its original • · · .1 | position (position C in Figure 5) , provided that the cylinder 10 '* is first allowed to shorten sufficiently.

6 118032

According to a preferred embodiment, the crossing of the death point is caused by the fixed mechanical guides 14, 15 and by moving the Pruning blade 12 and the feed member 3 according to a particular movement sequence, thus avoiding the actuators and their control need.

As shown in Figure 1, the apparatus 1 comprises a cylinder actuator 10-controlled attachment arm 4 rotatably secured to the body 2. The cylinder 10 is disposed such that the attachment arm 4 is pivotable (see Figure 5) to the en-10 first position (position C, or the like). ), wherein the extension of the cylinder 10 causes the clamping arm 4 to close, i.e. move towards the tree trunk. The clamping arm 4 can also be rotated to another position (position B, or the like) where the extension of the cylinder 10 now causes the clamping arm 4 to open. Em. in the positions, the cylinder 10 is also rotated in different positions, so that the same result is obtained by forcing the cylinder 10 in different positions, which in turn causes the position of the fastening arm 4 to change, for example when the piston rod 17 of the cylinder 10 is sufficiently retracted. In this case, the point 18 where the piston rod 17 engages with the hinge 4 by means of a joint 20 is located between the axis X and the point 19 where the cylinder body 16 is fixed to the joint (cf. axis Z). (see Figure 5). In another embodiment, the axis X is between the corresponding point · · · * · / 18 and the attachment point of the cylinder body 16, so that the cylinder 10 intersects with the axis X.

: X * 25 ·: **: In one embodiment of the invention, the position of the barrel 10 is controlled by a first cam member 14 which rotates with the retaining arm 4 about a rotation: ***: axis X and a second cam member 15 which rotates 12 φ # · included with rotation axis Y. The cam members 14, 15 are disposed so that, in a given position, they may lean against each other, thereby being • · / ··. flattened to a plane perpendicular to said axes X, Y.

The cam members 14, 15 are disposed in particular such that the rotation of the second cam member 15 is able to force the first cam member * to rotate as long as the mounting arm 4 and the pruning member 12 are first positioned As a result of the compression, the cylinder 10 moves over the above-mentioned point of death.

··· • »7 118032

Next, the embodiment implemented with the cam members 14, 15 and the associated operating sequence will be discussed. In the situation of Fig. 1, the cylinder 10 is above the die site and its extension causes the feed member 3 to close normally. The first cam 14 rotates with the feed member 3 and, in this embodiment, is positioned above the second cam 15. The second cam member 15 rotates with the pruning member 12. Next, the feeding means 3 are to be opened as much as possible, whereby the pruning apparatus 1 functions as a grapple. The pruning member 12 is opened so that the cam member 15 is pivoted up 10 to a position where the pivotal cam member 14 is not reached to collide with it. The piston rod 17 of the cylinder 10 of the feeding member 3 is moved in, shortening it to the minimum dimension, if necessary, so that the cam member 14 can move below the cam member 15 to a position where the cam member 15 of the closing pruning member 12 extends. Further, the cam member 15 of the closing pruning member 12 forces the cam member 14 to rotate further in a direction corresponding to the opening direction of the feeding member 3 as shown in Figure 2. The opening of the feed member 3 also forces the cylinder 10 to rotate to a different position and the cylinder 10 moves over the die, i.e., it is more downward and below the axis X (in Figure 1, it 20 is more upward and above the axis X). As the cylinder 10 is now extended, the feed member 4 opens further to the position shown in Figure 3.

Returning the feed member 3 to the position shown in Figure 1 or Figure 4: V: 25 is repeated by shortening the cylinder 10 and opening sufficiently ·: ··: Pruning member 12 to allow cam members 14 and 15 would not collide with each other. Cylinder 10 moves over the die due to gravity because! ···. the torque caused by the mass of the feed wheel 3 tends to close the feed member 4. The point 18 of the piston rod 17 and the center of mass of the feed member 30 are thus located on different sides of the rotation axis X. After this, normal felling and pruning operations can be continued. The closing feed member 3 can be received and controlled by the cam member 15 while the prestige member 13 is opened from the position ·: ··: * as shown in Figure 2.

35 • * * *; 6: Instead of the actuator * · ** · 10 according to an embodiment of the invention and as shown in Fig. 6, the feed member 3 is controlled by a mechanism 21 which is a 8118032 e.g. a drawbar 23. The drawbar 23 is secured between 18 and a pivot 22 of In this case, the cylinder 10 does not rotate about the axis of rotation Z, but rotation may also be allowed. In Fig. 6, the rotation position Bb (or other equivalent position) 5 of the mechanism corresponds to the position B of Fig. 5, whereby the extension of the cylinder 10 causes the feed member to open. At the point of death, the draw bar 23 is in the position Aa and oriented towards the axis of rotation X. The fixed orientation of the cylinder 10 is not necessarily toward the axis of rotation X. For feeding the trunks, the draw bar 23 is moved (rotation relative to position 18) 10 to position Cc (or the like), whereby extending the cylinder 10 causes the feed member to close. The auxiliary cylinder 20 of Figure 5 can now be coupled directly to the draw bar 23. The draw bar 23 and the torsion arm 11 are now simultaneously at the point of death (position Aa).

Alternatively, other means or mechanisms may be used instead of the draw bar 23 which comprise the above point of death or otherwise act between the feed member 3 and the cylinder 10 such that the same extension / shortening movement of the cylinder 10 provides the opposite function. It is mainly a matter of the engagement and mutual position of the torsion arm 11, i.e. the feed member 3, and the cylinder 10, or the position of the mechanism between them. The coupling between the feed member 3 and the cylinder 10 must also include the feed member 3 and the cylinder 10 if a change in their position affects operation, such as in the case of Fig. 5, where the cylinder is directly connected to the torsion arm. in the case of the switching there is at least an input element 4. This is, for example, a mechanism whose state change allows the function to change, • ♦; Vt, whereby different states correspond to different positions. The mechanism 13 is also applicable with the mechanism 21, whereby the position of the drawbar 23 (Cc-Aa-Bb-Aa-Cc), e.g.

30 • »·: V A ltering equipment 1 is connected to the crane end of the implement, where it has · · · the necessary securing and pivoting means for rotating the body 2 around a substantially vertical axis. The body is usually suspended by means of a pivot arm arranged to rotate the body 35 in a substantially horizontal direction. The swivel arm is threaded ** · '*: fixed to the chassis by means of a toner joint. The pruning apparatus further comprises: • V ·: a curved first arm of the pruning means and a pair of second 9 118032 arms pivotally attached to the frame. The arms are provided with cutting edges or delimbing blades. Cutting means, in particular a chain saw moving by means of a cylinder and placed in a saw box, also cut the tree trunk into specific lengths. The stems of the crate-5 are enclosed around the body and are curved. An additional fixed carcass member is also usually mounted on the front of the body. Pruning equipment may also be provided with grab means for loading and moving the tree trunks. The grapple means comprise a pair of jaws located on different sides of the tree trunk, whereby the feeding member may be inserted into the jaws as shown in Fig. 1, where it is between the upper pruning blade 12 and the lower pruning blade 9.

In the above description, the invention is illustrated by some examples, but the invention can also be applied within the scope of the appended claims. It is further understood that both feeders of the pruning apparatus are controlled by the apparatus of the invention. The cam prongs can also be positioned so that they are on the upper pruning blade, whereby the lower pruning blade may be completely missing. Here, too, the operation is as described above. The pruning blades may also form a U-shaped structure in which the feed member, and the mechanism 13, are located. Other structure, actuators, and: ** 'J bodies used for pruning may vary in a manner known per se.

• · • · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · 82 · · · 37 · · • · · · · · · ··· ...

* «·· # ··•••••••••••••••••••••

Claims (16)

    118032 .4 / '. :; 10 Claims:
  1. A pruning apparatus and its feed member arranged to feed the tree trunks through the pruning apparatus (1) and rotatably attached to the pruning apparatus (1) and arranged to close in a first position where it is intended to rest against a tree trunk in the pruning apparatus. , and open to a second position which allows the pruning apparatus to be used for loading one or more tree trunks, the pruning apparatus further comprising a cylinder-10 actuator (10) arranged to open and close said feed member (3) in said positions, characterized in that said cylinder actuator 10) and said feed member (3) has a coupling (11, 21) movable to a first position (C, Cc), wherein movement of the cylinder actuator (10), which is either an extension movement or a shortening movement, causes the feed member (3). closure to the aforementioned first position, and that said eng the field (21) is further movable to the second position (B, Bb), whereby the same movement of the cylinder actuator (10) in turn causes the feeding member (3) to open in the second position. 20
  2. A pruning device according to claim 1, characterized in that said cylinder actuator (10) is connected to said feed member. (3) by means of a reversible torsion arm (11), and that said, v. the position of the cylinder actuator (10) can also be rotated to different positions. • * · 25
  3. The pruning apparatus according to claim 1, characterized in that said cylinder actuator (10) is coupled to said feed member (3) via a position reversing mechanism (11,21), and said cylinder actuator (10). the position remains unchanged. : 30
  4. Pruning apparatus according to any one of claims 1 to 3, sensing,] ·. The coupling has a dead center with different positions of said φ · y. 't positions, whereby the crossing of the dead center is arranged to **: *' cause the rotation of the feed member (3) to change even if a cylinder actuator (10) is provided. ) of the same species mentioned above. * * * · • * 4 11 118032
  5. 5. The pruning apparatus and its feed member arranged to feed the tree trunks through the pruning apparatus (1) and rotatably attached to the pruning apparatus (1) and arranged to close in a first position for positioning against the tree trunk in the pruning apparatus, open to a second position which allows the pruning apparatus to be used for loading one or more tree trunks, wherein the pruning apparatus further comprises a cylinder actuator (10) arranged to open and close said feed member (3) in said positions, characterized in that said cylindrical actuator (10) a first position where the movement of the cylinder actuator (10), which is either an extension movement or a shortening movement, causes the feeding member (3) to close in said first position, and that said cylinder actuator (10) is pivotable to a second position the same movement of the above-mentioned 15 actuator (10) in turn causes the feeding member (3) to open.
  6. Pruning device according to Claim 5, characterized in that said positions of the cylinder actuator (10) are on opposite sides of the position corresponding to the die point of the cylinder actuator (10), wherein the point of die 20 corresponds to the position in which the cylinder actuator (10) is shortened or elongated. * · · * ·: Y:
  7. Pruning device according to claim 5 or 6, characterized in that the pruning device (1) further comprises a second actuator 25 arranged to rotate the cylinder actuator (10) to different positions. M | * * * \ .f
  8. Pruning apparatus according to one of Claims 5 to 7, characterized in that the pruning apparatus (1) comprises a pivoting pruning member, e (12), arranged to pivot about the first pivot axis (Y): J 30 a heel relative to the pruning apparatus (1), a first cam member (15) rotating with said pruning member (12), said feeding means:; *; a second cam member (14) rotating with the male (3), wherein the first cam member • · ·, * ··. the cam cam (15) is arranged to force the second cam member (14) "* to rotate in a direction which simultaneously rotates the feed member (3) which in turn causes the cylinder actuator (10) to rotate to a different position. ··· ♦ * • · 12 118032
  9. A pruning apparatus according to claim 8, characterized in that, before said forcing, the pruning member (12), together with the first cam member (15), is pivotable to an open position.
  10. Pruning device according to claim 9, characterized in that, before said forcing and after opening the pruning member (12), the cylinder actuator (10) is pivotable to a position in which the cylinder actuator (10) is shortened and oriented towards the rotation axis (X) of . 10
  11. Pruning device according to claim 9, characterized in that, before said forcing and after opening the pruning member (12), the cylinder actuator (10) is pivotable to a position where the cylinder actuator (10) is extended and intersects the rotation axis (X) of the feed member (3). with.
  12. Pruning apparatus according to one of Claims 8 to 11, characterized in that, during said compression, the pruning member (12), together with the first cam member (15), is rotatable to a closed position 20.
  13. Pruning device according to one of Claims 8 to 12, characterized in that, after said compression, the elongation of the cylinder actuator * * »(10) is arranged to cause the feeding member (3) to open - '*' *. * 25. «•• M
  14. The pruning apparatus according to any one of claims 5 to 13, characterized in that said cam members (14, 15) are disposed in the same manner as the pruning member (12) and the feeding member (3). a pair of rotation axes (X, Y) and about 30, each cam member (14, 15) having a cam extending at a distance from the rotation axis and a cam extending outwardly from the other cam member, the cam members (14, 15) being further arranged to rotate in a common plane perpendicular to said rotary axes (X, Y) - '*: ** den. : ***: 35
  15. ··· ·: ··: A pruning device according to claim 5 or 6, characterized in that the cylinder actuator (10) is arranged to rotate to a different position <13 118032 with the help of the force produced when the feed member (3) is pressed against the ground.
  16. Pruning apparatus according to one of Claims 5 to 15, characterized in that the cylinder actuator (10) is arranged to return to its original position by the action of the force exerted by the gravity closing the feeding member (3). ··. · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · · ·Ico · what · more · more ** • · • · · • 1 · '·' ♦ 1 · 1. * · 1 ···· '· ♦ 1 • · · * · · · «· · · · · · · · · · · · · · · · · · · · · ··· · · ··· ·
FI20031882A 2003-12-22 2003-12-22 Pruning equipment and its feeder FI118032B (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
FI20031882 2003-12-22
FI20031882A FI118032B (en) 2003-12-22 2003-12-22 Pruning equipment and its feeder

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
FI20031882A FI118032B (en) 2003-12-22 2003-12-22 Pruning equipment and its feeder
PCT/FI2004/050185 WO2005060734A1 (en) 2003-12-22 2004-12-14 A delimbing apparatus and a feeding member for the same
SE0501826A SE529930C2 (en) 2003-12-22 2005-08-18 Delimbing and feeding means for the same

Publications (3)

Publication Number Publication Date
FI20031882A0 FI20031882A0 (en) 2003-12-22
FI20031882A FI20031882A (en) 2005-06-23
FI118032B true FI118032B (en) 2007-06-15

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Application Number Title Priority Date Filing Date
FI20031882A FI118032B (en) 2003-12-22 2003-12-22 Pruning equipment and its feeder

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FI (1) FI118032B (en)
SE (1) SE529930C2 (en)
WO (1) WO2005060734A1 (en)

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0044876A1 (en) * 1980-07-25 1982-02-03 Rabewerk Heinrich Clausing Turning device for turnover ploughs
CA1283025C (en) * 1987-07-24 1991-04-16 G. Leo Samson Tree delimbing apparatus
SE467102B (en) * 1988-04-13 1992-05-25 Jan Eriksson A drive
CA2020113C (en) * 1990-06-28 1995-04-18 Jean-Marie Cote Tree delimber with tree feeding means
WO1997017834A1 (en) * 1995-11-14 1997-05-22 Timberjack Inc. Tree harvesting and processing head
FI20000943A (en) * 2000-04-19 2001-10-20 Risto Heikkilae turning device

Also Published As

Publication number Publication date
SE529930C2 (en) 2008-01-08
SE0501826A (en) 2005-08-18
FI118032B1 (en)
FI20031882D0 (en)
FI20031882A (en) 2005-06-23
FI20031882A0 (en) 2003-12-22
WO2005060734A1 (en) 2005-07-07

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