FI13472Y1 - Forest machine and the forest machine's joint - Google Patents

Abstract

Forest machine, characterized in that the forest machine (1) has at least two body parts (11), that between said at least two body parts (11) there is a joint (18) which allows the body parts (11) to rotate relative to each other, whereby the joint (18) has a rotation point and a rotation axis, and that between said at least two frame parts (11) there is a cable feed-through opening (27) passing through the joint (18), which is formed in such a way that at the rotation point of the joint (18) the rotation axis of the joint (18) is located in the cable feed-through opening (27) in the area.

Description

Forest machine and forest machine joint

Background of the invention

The invention relates to a forest machine and especially to a joint of a forest machine.

Brief description of the invention

The goal of the invention is to develop a new type of forest machine and forest machine joint. The solution according to the invention is characterized by what is said in the independent protection requirements. Some embodiments of the invention are subject to independent protection claims.

In the presented solution, the forest machine has at least two frame parts.

There is a joint between the frame parts that allows the frame parts to rotate relative to each other.

So there is a point of rotation in the joint. The joint still has an axis of rotation. The forest machine can be chassis-controlled. Between the frame parts there is a cable through hole passing through the joint. The cable entry hole is formed in such a way that at the point of rotation of the joint, the rotation axis of the joint is located in the area of the cable entry hole. Forest machines often have to be used in uneven and/or rocky or otherwise difficult terrain conditions. In this case, it is advantageous to equip the forest machine with a joint that allows the body parts to rotate relative to each other. In this case, the cables between the body parts have to face high stress caused by twisting and possibly bending. Furthermore, factors external to the forest machine, such as the terrain — branches, twigs and branches and weather conditions, such as ice accumulation, and on the other hand the internal structures of the forest machine, such as the hoses of the forest machine, can cause damage to the cables. The creation of a cable feed-through opening at the axis of rotation of the joint results in the reduction of torsion caused by rotation on the cables. All in all, cables can be obtained this way

S 25 in connection with the formed joint, for example, to be divided into its own entity,

N when they are reasonably little exposed to stress and the outside of the forest machine

S for it and for the forest machine's internal causes of damage.

N According to one embodiment, the said joint allows the body parts to turn and rotate with respect to each other, whereby the joint has a pivot axis and a rotation

N 30 pivot axis, or the forest machine has, in addition to the joint that allows the body parts to rotate, 2 joints that allow the body parts to turn and twist relative to each other. With the help of the 2 turning and twisting joint, a very versatile

N forest machine and with the presented solution, the risk of damage to the cables can be made very small even in connection with such a joint.

According to one embodiment, there is a protective housing for cables that allows turning and/or twisting in connection with the cable feed-through opening. According to one embodiment, the protective case is adapted at least to the pivot axis of the joint. According to yet another embodiment, the protective case is a multi-axis cable carrier that allows bending and twisting. The protective case helps to reduce the risk of damage to the cables. At least the protective case on the pivot shaft protects the cables, especially in situations where the frame parts turn relative to each other. The multi-axial cable chain, which allows bending and twisting, is durable in use, which means it protects the cables effectively.

According to one embodiment, the protective case has an intermediate part that divides the protective case into at least two parts in its cross-section. In this way, different cables can be fitted to different parts of the protective case, whereby the cables remain separate from each other, which further reduces the risk of their damage. For example, high voltage cables can be fitted to one part of the protective case and low voltage cables to the other part.

According to one embodiment, in connection with the joint there is a separate hose passage from the cable passage. In this case, in particular, the cables can be easily adjusted into their own entity so that they are not exposed to the effect of, for example, bent hydraulic hoses, which could otherwise damage the cables when bending and twisting. In this way, the hoses, such as hydraulic hoses, can be kept separate from the cables in the joint, so that the risk of damage to both cables and hoses can be kept low.

According to one embodiment, at least two body parts have power distribution units. When the frame parts have power distribution units, the number of cables passing through the frame parts can be kept reasonably small. In this way, it is quite easy to protect the cables because, for example, the through-

The N hole can be reasonably small. Further, for example, a possible protective case

N can be reasonably small. Similarly, if desired, the protective case can be a very small cable chain, which can bend very well according to the movements of the joint. This

With YT 30, the risk of cable damage can also be kept reasonably low.

E nose. & Brief explanation of the patterns

S

Q The invention will now be explained in more detail in connection with some embodiments

Here, referring to the attached drawings, of which:

Figure 1 shows a forest machine;

Figure 2 shows another forest machine;

Figure 3 schematically shows a forest machine;

Figure 4 shows a part of the joint of a forest machine viewed from the top;

Figure 5 shows part of the joint of the forest machine according to Figure 4, viewed from the direction of the rotation axis; and

Figure 6 shows the part of the joint of the forest machine according to Figure 4 viewed from the side and cross-sectioned along the line A-A of Figure 5.

Detailed description of the invention

Figures 1 and 2 show some forest machines. Forest machine 1 can be, for example, a forest work unit, for example a loader tractor, as in Figure 1, a harvester, as in Figure 2, or another forest machine, for example another type of driving machine suitable for transporting loads or a combination of a loader tractor and a harvester.

The forest machine 1 can comprise two or more frame parts 11 and a boom 14 fitted to at least one frame part. The forest machine can also comprise, for example, a tool 16 fitted to the boom 14. The tool can comprise, for example, a lifting device, such as a loading bucket, and/or a wood processing tool, such as the harvester head.

Depending on the design, the forest machine 1 can also include other structural parts. For example, the forest machine 1 can comprise a cab 12 fitted to at least one body part 11. The forest machine 1 further comprises means of movement 13, which means of movement 13 can comprise at least one of the following: wheels fitted to an axle, wheels fitted to a rocking axle, wheels fitted to a bogie axle, undercarriage or other a device known in its own right for guiding a forest machine into motion relative to its working platform. Forest machine 1 can be frame-controlled. It is clear to a professional in the field that, in addition to 1, the forest machine typically comprises numerous different structural components

S and functional, structural parts and entities depending on the type of forest machine, & such as the load space 15, the power source 17 and so on. <Q The forest machine 1 shown in Figure 1 has two frame parts 11 and the said frame parts 11 are connected by a joint that allows the frame parts 11 to turn and

E 30 twisting with respect to each other. The forest machine 1 shown in Figure 2 has three © frame parts 11. In the embodiment in question, the rear and middle

S frame part 11 is connected by a joint that allows the frame parts 11 to turn and rotate

Q tymene in relation to each other. The middle and front body part 11 is combined

N ted with a joint that allows the body parts 11 to rotate relative to each other, but not to turn relative to each other.

Figure 3 shows the forest machine 1 schematically. In the embodiment of Figure 3, the forest machine 1 has two frame parts 11. The frame parts 11 are connected to each other by a joint 18 so that the forest machine 1 is frame-controlled. The fact that the forest machine 1 is frame-controlled means that in connection with the joint 18 there are means for turning the frame parts 11 in relation to each other. Such means can comprise one or more actuators, with the help of which the body parts 11 can be turned relative to each other around the pivot axis of the joint 18.

The joint 18 therefore allows the body parts 11 to turn relative to each other. In the embodiment of Figure 3, the hinge 18 further allows the frame parts 11 to rotate relative to each other. If the joint allows the frame parts 11 to rotate with respect to each other, such a joint may have one or more actuators with which the frame parts 11 can be rotated with respect to each other around the axis of rotation of the joint 18. Said actuators can be, for example, hydraulic cylinders or electric linear actuators. Furthermore, in connection with the joint, there may be locking devices, with the help of which the body parts 11 can be locked at the joint 18 so that they cannot move, i.e. cannot turn and/or cannot twist with respect to each other. There may also be other instruments in the joint. For the sake of clarity, the mentioned actuators, locking devices and other devices are not shown in the figure, because their function and structure are familiar to a professional in the field.

The axis of rotation of the joint 18 is essentially parallel to the longitudinal direction of the frame parts 11 of the forest machine 1 when the frame parts 11 are essentially parallel, and essentially parallel to the longitudinal direction of at least one frame part 11 when the frame parts are turned relative to each other. The axis of rotation of joint 18 is substantially perpendicular to the axis of rotation. The pivot axis can be essentially perpendicular to the ground. When the forest machine 1 is on a flat base horizontally, the turning axis can be substantially vertical.

N There is a motor 19 connected to both frame parts 11. Motor 19 can

N be, for example, an electric motor or a hydraulic motor or any other motor suitable for the purpose. Motor 19 can be connected to means of movement

YT 30 13 with gearbox 20. A gearbox is not necessary, but the engine 19 can

It can also be connected to mobility equipment 13 without a gearbox. © There is a power distribution unit 21 in connection with both body parts 11. Te-

S from the honing unit 21 can be fed with it in the same body part 11 located

N via high voltage devices. Such high-voltage devices can be, for example

S 35 inverter 22, battery 23, charger 24 and/or converter 25. Furthermore, the high-voltage device can be, for example, a compressor or a fan or some other device.

The cables between the body parts 11 are illustrated with reference 26. The cables 26 can be high-voltage cables and/or low-voltage cables.

In connection with forest machine 1, the high voltage can be, for example, 120 volts or more. In connection with the forest machine 1, the low voltage can be, for example, 60 volts or less.

In connection with joint 18, a cable feed-through opening is shown schematically in Figure 3, which is illustrated with the reference 27. Cable feed-through opening 27 is formed in such a way that the axis of rotation of joint 18 is located in the area of cable feed-through opening 27. The cables 26 pass between the body parts 11 via the joint 18 through the relevant cable penetration opening 27.

Figures 4, 5 and 6 show a part of the joint 18. Figures 4, 5 and 6 show, for example, the first body part 28 of the joint 18, but for the sake of clarity, the figures in question do not show, for example, the second body part of the joint 18, which is adapted to turn the first in relation to the frame part 28, and not the pins at the axis of rotation of the frame parts of the joint.

The pivot axis of the joint 18 is illustrated in Figure 4 and marked with the reference T. The turning of the body parts of the joint 18 around the pivot axis T is illustrated by the double-headed curved arrow U.

The axis of rotation of the joint 18, around which the body parts 11 at the joint 18 rotate, is also illustrated in Figure 4 and marked with the reference symbol R. The rotation of the body parts 11 around the axis of rotation R is illustrated by a double-headed curved arrow S.

As illustrated in Figures 5 and 6, the center point of the cable entry hole 27 can be in a different position than the rotation axis R. In this example, however, the rotation axis R of the joint 18 is located in the region of the cable entry opening 27. n In connection with the cable entry hole 27, there is a protective case 29 for cables 26

For n. The protective housing 29 extends in the hinge 18 at least to the pivot axis T of the hinge 18

For N. Thus, at least at the point where the cables 26 body parts 11 with respect to each other = when turned meet bending, the cables 26 are protected by a protective case 29.

YT 30 In Figures 4, 5 and 6, the rotation points of the joint 18 are illustrated vii-

E marked with 30. At the rotation point 30, there is a bearing in the joint 18, which allows the body parts 11 to rotate relative to each other in the joint 18. The rotation point of the joint

So S dan 30 does not have to be at the pivot axis T of the joint.

N In the embodiment of Figure 4, the protective case 29 does not extend to the twisting point

S 35 30 through. In this case, when the frame parts 11 rotate with respect to each other, the first end of the protective case 29 does not however rotate with respect to the second end. In this case, the protective housing 29 does not have to rotate, in which case it is sufficient that the protective housing 29 is flexible, but it does not have to be rotating. Even in this case, however, the protective case is preferably flexible and twistable, i.e. allowing bending and twisting, in which case it withstands stress very well.

The protective case 29 can also be fitted through the rotation point 30, in which case it also rotates when the body parts 11 rotate relative to each other. In this case, the protective casing 29 is preferably flexible and twistable, i.e. allowing bending and twisting. Preferably, the protective housing 29 is a multi-axis cable chain that allows bending and twisting.

The protective case 29 can have an intermediate part 31, which divides the protective case 29 into at least two parts in its cross-section. For example, high voltage cables can be fitted to the first part 32 of the protective case 29. For example, low voltage cables can then be fitted to the second part 33 of the protective case 29. Low-voltage cables can be, for example, control cables, signal cables and/or data transmission cables.

The intermediate part 31 can be, for example, a partition wall or a spacer. The intermediate part 31 can be integral with the dimensions of the protective housing 29 or integral with part of the dimensions of the protective housing 29. Furthermore, the intermediate part 31 can consist of separate parts that do not touch each other. Furthermore, the intermediate part 31 can consist of separate, but mutually touching — parts. In this case, the separate parts can preferably move relative to each other, so that they at least do not excessively hinder the bending and/or twisting of the protective case.

The intermediate part 31 or its parts can be attached to the outer wall of the protective tube or they can be detached from the outer wall of the protective tube 29.

In connection with the joint 18, there can be a separate hose passage opening 34 from the cable passage opening 27. The hose passage opening 34 can be fitted, for example, to several successive plate structures in the joint 18. Hose feed-through opening 34

For example, hydraulic hoses from body part 11 can be routed through N through joint 18

N to another. = It is obvious to a professional that as technology develops, the invention

The basic idea of the T 30 can be implemented in many different ways. The invention and its embodiments

E are therefore not limited to the examples described above, but can vary within the scope of the protection requirements.

S The forest machine 1 shown can be, for example, electric or hybrid

N usable. Power transmission between frame parts 11 can be realized, for example, by electric

S 35 — by rope or hydraulically. Power transmission between the body parts 11 can be implemented without mechanical power transmission, in which case a cardan shaft is not needed between the body parts 11, for example.

The forest machine 1 can have two or three frame parts 11 or even more frame parts 11. Between successive frame parts 11 there can be a joint that allows turning and/or twisting. ™

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Claims (16)

Protection requirements 1. Forestry machine, characterized in that the forest machine (1) has at least two body parts (11), that there is a joint (18) between said at least two body parts (11) which enables the body parts (11) to rotate in relation to each other , whereby the joint (18) has a rotation point and an axis of rotation, and that between the said at least two body parts (11) there is a cable entry (27) which goes via the joint (18), designed in such a way that the joint (18) axis of rotation at the joint's (18) rotation point lies in the area of the cable entry (27). 2. Forest machine according to protection requirement 1, characterized in that between the at least two body parts (11) there is a joint (18), which allows the rotation and twisting of the body parts (11) in relation to each other, whereby the joint (18) has a pivot axis and a axis of rotation . 3. Forestry machine according to protection requirements 1 or 2, characterized in that there is a protective cover (29) for the cables (26) in connection with the cable entry (27) which allows swinging and/or rotation. 4. Forestry machine according to protection requirement 3, characterized in that the downlink (18) has a pivot axis and the protective casing (29) is arranged at least at the pivot axis of the joint (18). 5. Forestry machine according to protection requirements 3 or 4, characterized in that the protective casing (29) is a cable chain with several axes which enables bending and twisting. 6. Forest machine according to any of the protection requirements 3-5, characterized in that the water protection cover (29) has an intermediate part (31) which divides the protection cover (29) into at least two parts in cross section. o 7. Forestry machine according to any of the preceding protection requirements, characterized by the fact that in connection with the joint (18) there is a pipe passage (34) N 30 which is separate from the cable passage (27). E 8. Forest machine according to one of the preceding protection requirements, know e - D characterized by the fact that at least two of the mentioned body parts (11) have power distribution units (21). S 9. Forestry machine according to one of the previous protection requirements, kn e - > 35 the drawn forest machine (1) is electric or hybrid driven. 10. The joint of the forest machine, characterized by the down joint (18) is arranged to join the two body parts (11) of the forest machine (1), that the joint (18) is arranged to allow the body parts (11) to rotate in relation to each other, whereby the joint (18) has a rotation point and an axis of rotation, and that the joint (18) has a cable entry (27) for the cables (26) that lie between the body parts (11), whereby the joint (18) is designed so that the joint's (18) axis of rotation at the joint's (18) rotation point lies in the area of the cable entry (27). 11. The joint of the forest machine according to protection claim 10, characterized in that the joint (18) is arranged to allow the rotation and twisting of the body parts (11) in relation to each other, the joint (18) having a pivot axis and rotation axis. 12. The joint of the forest machine according to protection requirements 10 or 11, characterized in that in connection with the cable entry (27) there is a protective cover (29) for the cables (26) which allows swinging and/or rotation. 13. The joint of the forest machine according to protection claim 12, characterized in that the joint (18) has a pivot axis and the protective casing (29) is arranged at least at the pivot axis of the joint (18). 14. The joint of the forest machine according to protection requirements 12 or 13, characterized by the water protection cover (29) is a cable chain with several axes which enables bending and twisting. 15. The joint of the forest machine according to any of the protection requirements 12-14, characterized by the water protection cover (29) having an intermediate part (31) which divides the protection cover (29) into at least two parts in cross-section. n 16. The joint of the forest machine according to any of the protection requirements 10-15, characterized in that the downstream joint (18) has a pipe passage (34) which is separate from the cable passage (27). o N 30 I a a co O O <t ™ N O N >”