FI104801B - Fixing mechanism for the chain of a feed sprocket in a timber feed device - Google Patents

Description

104801

WOOD DRIVER DRIVER WHEEL CHAIN MOUNTING MECHANISM

The invention relates to a mechanism for fastening a chain or the like of a wood feeder feed wheel, which chain or the like can be mounted on the feed wheel.

The flexible feed wheel and the mesh chain mounted on it have become more common as the harvester feed wheel. This is a satisfactory solution for two-roller single-harrow-10 horns. However, the problem is that the chain remains on the wheel. The chain must not slip or move. In order to reduce the strain on the elastic surface, the chain must remain as stationary as possible.

One solution used is to fasten the chain mat at one or both of its edges, as disclosed in SE Patent Publication 500766. When the other edge is free, the chain mat can move tangentially, especially when the rubber is pressed and the rubber 20 is worn out. Frequently, the chain is tightened by removing the links from the annular edge chain running at the free edge. Because the work is cumbersome, it is often left undone, leading to too loose chains. When the chain mat is secured to both wheels at its two edges as described in SE-25 500766, it is better secured on both sides. The problem is tightening it, which is difficult. In such a structure, the various parts of the chain cannot be individually tightened.

30 The biggest problem arises when the feed chain is mounted on the harvester head with a high angle of rotation of the feed wheels in a plane perpendicular to the feed direction - 70 ... 100 degrees in open and closed position - especially when the feed wheels do not work with resulting in symmetrical movements. Thus, when gripping and feeding the wood, a situation is created whereby the piece to be fed 104801 2 is pressed against the end of the wheel by means of another feed wheel. This causes heavy strain on the attachment of the chain mat edge loops.

It is an object of the invention to provide a mechanism for fastening the feed wheel of a wood feeding device which eliminates the above problems. In particular, it is an object of the invention to provide a fastening mechanism which can be easily and individually tightened and by means of which the chain 10 is easy to install. It is a further object of the invention to provide a fastening mechanism which can withstand high stresses.

The object of the invention is achieved by a mechanism for fastening the feed wheel of a wood feeding device, which is characterized by what is claimed.

In the fastening mechanism according to the invention, the ends or edge of the chain or the like are connected through openings or holes in the feed plate motherboard to the opposite ends or edge of the chain or the like. With such a fastening mechanism, the chain or chain mat or the like is simple to install and the chain functions reliably. The solution of the invention achieves an improvement in chain installation and post-tensioning because the chain can be tensioned from one side and each part and point of the chain can be tensioned easily and individually.

In a preferred embodiment of the invention, the fastening mechanism comprises a fastening device to which both edges or ends 30 of the chain are fastened. A separate mounting device can be easily attached to both edges or ends.

In a further preferred embodiment of the invention, the clamping device is a clamping ring 35 at the free end of the drive wheel motor, which has clamping eyelets for clamping the chain or the like. When tightening can be done from the open end of the wheel, after retightening, the wheel does not need to be removed from the motor shaft.

In another preferred further embodiment of the invention, the fastening mechanism comprises a fastening means, which is fastened to a part of the chain on one side of the wheel motherboard, extends through the openings of the wheel motherboard and can be secured to the fastening device. When using the attachment means, the installation is simple and takes place, e.g. The free edge is then secured with the fastening means together with the fastening device.

A preferred fastening means is a U-bolt which is connected to the motor-side end-linking links of the other end of the chain, and preferably to the two linkage loops, the U-bolt ends being guided to one side of the wheel motherboard. The U-bolt is easy to handle and reliably secures the other edge of the chain. In other embodiments of the invention, other suitable fastening means may be used instead of the U-bolt.

In addition, the clamping mechanism includes clamping nuts located at the ends of the U-bolt. These allow easy and simple adjustment of the 25 chain tension.

In a third preferred further embodiment of the invention, the clamping ring is divided into two separate parts, the inside of which comprises clamping means for clamping the chain or the like or the ends 30. The outermost part transmits and receives the chain tension force exerted by the fastening means passing through the motherboard and at the same time locks the inner fastening ring so that the chain mat or the like cannot move around the circumference of the wheel. With this arrangement, the clamp-35 is more responsive to actual load situations when the wheel is pressed from one side against the tree.

104801 4

In a preferred embodiment of the invention, the fastening device has a collar-shaped guard ring which protects the chain linking links and the fastening members of the fastening ring against dead load. Especially in tricycle and quadricycle 5 harvester grabs, where the feed wheel is subjected to axial breaking and lateral forces, the chainless attachment of the edge loops is subjected to heavy stress. In such a structure, the chain attachment points are located behind a guard ring which protects them.

10

In a preferred embodiment, the guard ring is notched such that the chain securing loops are aligned with the notches. In this case, the clamping ring prevents the chain links from falling off their hooks.

15

By chain is meant herein a ring-shaped chain mat or a chain structure consisting of one or more discrete chains or elements or the like, whose corners have connecting links. Other types of chains and / or feeder elements 20 may also be contemplated.

In a preferred embodiment of the fastening device according to the invention, the links to be attached to the chain mat are larger and more durable than the other links in the chain. The fasteners 25 are then made reliable.

The invention will now be further elucidated with reference to the accompanying drawing, in which Fig. 1 is a side view of a wheel mounted on a mesh chain using the fastening mechanism of the invention, Fig. 2 is a cross-sectional view of Fig. 1; Figures 4 and 5 show one embodiment of a wheel in which the retaining ring is divided into two separate parts.

104801 5

In the embodiment of Figures 1 and 2, a mesh chain 5 is mounted on the feed wheel 2 of the wood feeding device. The feed wheel is a wheel made of rubber or other elastic material. The chain is mounted in such a way that the loops or loops 5b of one side of the chain are connected through openings or holes in the base plate 3 of the feed wheel 2 to the fastening device 4 to which the loops or loops 5a of the opposite side of the chain are attached.

The fastening device 4 is a fastening ring at the free end opposite the motor 8 of the feed wheel 2. The fastening ring has hooked fastening straps 4a to which the loops 5a are fastened. Further, the fastening device 4 has a collar-shaped guard ring 4b which protects the hook-like fastening members.

15

One of the fastening means 6 is a U-bolt secured to the chain loops 5b on the other side of the wheel motherboard. In this case, the U-bolt is attached to two adjacent loops. The claws of this U-bolt 6 extend through the openings of the wheel base plate 3 of the wheel 20 and can be secured to the holes in the mounting device 4. Tightening nuts 7 are provided at the ends of the U-bolt to secure the U-bolt to the fastener and to fasten the fastener.

25

Figures 4 and 5 show a wheel having a two-part mounting ring. The inner periphery of the fixing portion 4a, which include hooks, or equivalent fastening elements of the chain or wheel ketjuraaton the outer side of the ends of the pin. The outer clamping ring 30 is a member 4 comprising a collar-shaped guard ring 4b provided with notches extending across the loops of the ends of the chain. The notches prevent the chain loop from sliding off its hook and at the same time prevent the chain mat from moving relative to the wheel. The guard ring may also have 35 preferably inwardly pivoted projections to prevent the chain from falling out of its hook.

104801 6

There is no so-called chain in the chain. weak links. The mesh shape gives excellent stability and strength. The loops 5a and 5b at the ends of the chain are larger in size than the other loops of the chain, thereby making the attachments sufficiently rigid.

The chain mat can be easily and simply fastened to the chain by placing the mat second side 5 of the loops 5a Ki-nityskehän four hooks 4a. The U-bolt 6 is threaded through two eyelets 5b on one side 10, the U-bolts are guided through the openings in the wheel motherboard 3 and through the openings in the mounting ring and secured with clamping nuts 7.

The rubber wheel, which is the most worn part, can be easily detached from the retaining ring and the chain for new tapping when the rubber has run out. The chain attachment points are thus not in the way of the rubber.

In various embodiments of the invention, the chain may be a chain structure instead of a ring-shaped chain mat or one or more discrete chains or elements.

The invention is not limited to the preferred embodiment shown, but may vary within the scope of the inventive idea of the claims.

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Claims (10)

1. A fastening mechanism for a feed wheel chain or the like in a wood feed device, which chain (5) or the like can be placed on top of the feed wheel (2), characterized in that the ends or the edge (5b) of the chain or its equivalent are joined through in the feed wheel (2) motherboard (3) being openings or heels with the opposite ends or edge (5a) of the chain or equivalent. 10 2. A fastening mechanism according to claim 1, characterized in that the mechanism includes a fastener (4) to which the chain edges or ends of the chain are attached. 3. A fastening mechanism according to claim 2, characterized in that the fastener (4) is an opposite free end to the motor (8) of the feed wheel (2), in which there is fastening means (4a) for fastening the edge of the chain or the corresponding ( 5a) or ends. 20 4. A fastening mechanism according to claim 2 or 3, characterized in that the fastening mechanism includes a fastening tool (6) which is fixed in the part of the chain on the other side of the wheel's motherboard, extends through the openings in the motherboard of the wheel (3). ) and can be attached to the fastener (4). '· · A fastening mechanism according to claim 4, characterized in that the fastening tool (6) is a U-bolt which is connected to the coupling links (5b) at one end of the chain at the end of the motor side, and advantageously with two coupling links, and which ends of the U-bolt have been placed on the other side of the motherboard of the wheel. 6. A fastening mechanism according to claim 5, characterized in that the clamping mechanism belongs to the clamping nuts (7) located on the ends of the U-bolt. 104801 7. A fastening mechanism according to any of claims 2-6, characterized in that the fastener (4) belongs to at least two separate parts (4a, 4b), of which the inner, coronary part (4a) belongs fastening means for the edge (5a) or ends (5a) or ends of the fastening chain, and the outer part (4b) is located beyond the inner ring, the latter part (4b) being arranged to convey the fastening force from the other side of the motherboard and simultaneously locking the first the wreath of the part (4a) in place. 8. A fastening mechanism according to claim 7, characterized in that the part (4b) is advantageously a collar-like protective ring, which acts as protection for the coupling links and the fastening means of the fastening ring (4a) against frontal load. 15 9. A fastening mechanism according to any one of claims 1-8, characterized in that as a chain is an annular chain mesh mat or of one or several separate chains or elements formed chain construction. 20 10. A fastening mechanism according to any of claims 2-9, characterized in that the links (5a) of the chain mat (5) can be attached to the fastener (4) and the links (5b) located on the opposite side of the chain mat are to size 25 larger than the chain's other links. m • ·