CA2394601C - Feed roller and a method for assembling a feed roller - Google Patents
Feed roller and a method for assembling a feed roller Download PDFInfo
- Publication number
- CA2394601C CA2394601C CA002394601A CA2394601A CA2394601C CA 2394601 C CA2394601 C CA 2394601C CA 002394601 A CA002394601 A CA 002394601A CA 2394601 A CA2394601 A CA 2394601A CA 2394601 C CA2394601 C CA 2394601C
- Authority
- CA
- Canada
- Prior art keywords
- flange
- feed roller
- ring
- track
- wheel rim
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Lifetime
Links
Classifications
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
- B27B—SAWS FOR WOOD OR SIMILAR MATERIAL; COMPONENTS OR ACCESSORIES THEREFOR
- B27B25/00—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees
- B27B25/02—Feeding devices for timber in saw mills or sawing machines; Feeding devices for trees with feed and pressure rollers
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Forests & Forestry (AREA)
- Tires In General (AREA)
- Forwarding And Storing Of Filamentary Material (AREA)
- Devices For Conveying Motion By Means Of Endless Flexible Members (AREA)
- Rolling Contact Bearings (AREA)
Abstract
Feed roller in tree processing machinery for feeding tree trunks through the machinery distinguished in that the flange (2) is arranged essentially in the centre of the wheel rim (1) and that a track (4) of elastic material is arranged on either side of the flange (2). A ring (5) is arranged on the side of the respective track (4) that is opposite the flange, whereby the rings (5) that abut the outer sides of the elastic track on either side of the wheel are joined with one another by means of tensioning devices (8).
Description
Feed roller and a method for assembling a feed roller The present invention relates to a feed roller used in tree-processing machinery to feed the trunk of the tree through the machinery.
Such feed rollers used in tree-processing machines or tree harvesters are normally equipped with a vulcanised tread of, for example, rubber, attached to a wheel rim and surrounded by cross-running chain links or a net of chain links to attain a better grip when feeding the tree trunks forward. When the desired function of the feed roller no longer exists, the roller must be dismounted and equipped with a new tread. The costs for dismounting and fitting, as well as for a new feed roller, are substantial.
The present invention seeks to eliminate the said disadvantages of known feed rollers and provide these with a longer life length and thus lower operating costs.
In accordance with the present invention there is provided feed roller for tree-processing machinery for feeding tree trunks through the machinery characterised in that it comprises an essentially cylindrically-shaped wheel rim with a radially outwardly facing flange located essentially at the centre of the wheel rim, a pair of tracks of elastic material each arranged on the wheel rim on opposite sides of the flange such that they abut the flange, plus a pair of rings each arranged on the side of each track opposite to the flange such that they abut the track, wherein the pair of rings abutting the outside of the tracks are joined by means of a tensioning device.
la In a further aspect of the present invention there is provided procedure for fitting a feed roller to tree-processing machinery for feeding tree trunks through the machinery characterised in that a ring-shaped track of elastic material is pushed onto either side of a wheel rim provided with an outwardly facing flange located essentially at the centre of the wheel rim such that the track abuts the flange, a ring is applied to the side of the track opposite the flange and a tensioning device is brought between the ring and another part of the feed roller on the opposite side of the ring.
An example of the invention will be described in greater detail with reference to the drawing where Figs. 1 and 2 show schematically as two different embodiments an upper half of the roller as a cross-section through it and a lower half of the roller seen across the direction of its axis.
1 designates a cylindrical roller or hub in the form of a wheel rim 1, made of steel, for example, that radially along its periphery and in the centre of the rim has an outwardly projecting flange 2 that is, for example, permanently attached by welding to the wheel rim, see Fig. 1. The roller 1 is supported in the traditional manner so that it can be driven to rotate around an axle 3. A
circular-shaped track 4 of elastic material, for example rubber, that runs around the wheel rim is arranged on each side of the flange 2. Each track 4 is pushed onto the cylindrical wheel rim 1 so that it abuts the flange 2. A
rigid ring 5, made of steel, for example, whose inner periphery 6 has a radius that is greater than the outer diameter of the wheel rim 1 is brought onto the outside of the respective track 4. This is evident at 7. The rings 5 are joined with one another by means of a tensioning lb device 8, here shown in the form of chains, that increases the friction between the roller and the tree trunk and thus reduces the risk for slippage.
The intention with the tensioning device 8 is also to draw the rings towards one another and thereby press the elastic tracks 4 between themselves and the flange 2. This means that this change in shape due to the tension between the rings 5 will press the tracks 4 against the periphery of the wheel rim 1, against the flange 2 as well as against the rings 5, which means that the tracks 4 will be prevented from slipping or sliding in relation to the rim 1. To further ensure that slidi 1g or slipping cannot occur, the flange 2 can be provided with a number of recesses or holes t iat pass all the way through in which the material of the tracks 4 will expand and lock the traclcs 4 to the flange 2.
In the example shown, it is suggested that the tensioning device is chains 8 that can be tensioned between the rings 5 (the chains in the example shown are indicated only by dotted and dashed lines). The actual clamping of the respective chain at the rings can naturally take place in a number of ways that are obvious for a person skilled in the art. In the figure, it is suggested that the respective chain 8 is provided with an end piece that has a part that projects out from the respective ring 5 and that is provided with an elongated hole for accommodating, for example, a cotter, so that it can be locked at the ring to secure its function.
When, for example, the tracks 4 have been worn down to such a degree that the function of the feed roller is no longer satisfactory, the chains 8 are loosened and the rings 5 removed. The tracks 4 can now be easily drawn off from the hub of the roller and replaced by new tracks that are locked into place by means of the rings 5 and chains 8 as described previously. On many occasions, the tracks are worn down to a greater extent at one of their edges, in which case they can exchange places or be turned around before they are pushed back onto the hub of the roller.
One advantage that is obtained automatically with the invention is that stretching of the tensioning device 8 is achieved when the tracks 4 are fitted.
It should be realised that the invention can be designed in a number of different ways within the scope of the characteristics of claim 1. It can be considered, for example, to position the flange on one of the sides of the wheel rim and use only one elastic track 4 and ring 5, whereby the tensioning device 8 will extend between the ring 5 abutting the one side of the track and the flange 2, see Fig. 2.
---------------
Such feed rollers used in tree-processing machines or tree harvesters are normally equipped with a vulcanised tread of, for example, rubber, attached to a wheel rim and surrounded by cross-running chain links or a net of chain links to attain a better grip when feeding the tree trunks forward. When the desired function of the feed roller no longer exists, the roller must be dismounted and equipped with a new tread. The costs for dismounting and fitting, as well as for a new feed roller, are substantial.
The present invention seeks to eliminate the said disadvantages of known feed rollers and provide these with a longer life length and thus lower operating costs.
In accordance with the present invention there is provided feed roller for tree-processing machinery for feeding tree trunks through the machinery characterised in that it comprises an essentially cylindrically-shaped wheel rim with a radially outwardly facing flange located essentially at the centre of the wheel rim, a pair of tracks of elastic material each arranged on the wheel rim on opposite sides of the flange such that they abut the flange, plus a pair of rings each arranged on the side of each track opposite to the flange such that they abut the track, wherein the pair of rings abutting the outside of the tracks are joined by means of a tensioning device.
la In a further aspect of the present invention there is provided procedure for fitting a feed roller to tree-processing machinery for feeding tree trunks through the machinery characterised in that a ring-shaped track of elastic material is pushed onto either side of a wheel rim provided with an outwardly facing flange located essentially at the centre of the wheel rim such that the track abuts the flange, a ring is applied to the side of the track opposite the flange and a tensioning device is brought between the ring and another part of the feed roller on the opposite side of the ring.
An example of the invention will be described in greater detail with reference to the drawing where Figs. 1 and 2 show schematically as two different embodiments an upper half of the roller as a cross-section through it and a lower half of the roller seen across the direction of its axis.
1 designates a cylindrical roller or hub in the form of a wheel rim 1, made of steel, for example, that radially along its periphery and in the centre of the rim has an outwardly projecting flange 2 that is, for example, permanently attached by welding to the wheel rim, see Fig. 1. The roller 1 is supported in the traditional manner so that it can be driven to rotate around an axle 3. A
circular-shaped track 4 of elastic material, for example rubber, that runs around the wheel rim is arranged on each side of the flange 2. Each track 4 is pushed onto the cylindrical wheel rim 1 so that it abuts the flange 2. A
rigid ring 5, made of steel, for example, whose inner periphery 6 has a radius that is greater than the outer diameter of the wheel rim 1 is brought onto the outside of the respective track 4. This is evident at 7. The rings 5 are joined with one another by means of a tensioning lb device 8, here shown in the form of chains, that increases the friction between the roller and the tree trunk and thus reduces the risk for slippage.
The intention with the tensioning device 8 is also to draw the rings towards one another and thereby press the elastic tracks 4 between themselves and the flange 2. This means that this change in shape due to the tension between the rings 5 will press the tracks 4 against the periphery of the wheel rim 1, against the flange 2 as well as against the rings 5, which means that the tracks 4 will be prevented from slipping or sliding in relation to the rim 1. To further ensure that slidi 1g or slipping cannot occur, the flange 2 can be provided with a number of recesses or holes t iat pass all the way through in which the material of the tracks 4 will expand and lock the traclcs 4 to the flange 2.
In the example shown, it is suggested that the tensioning device is chains 8 that can be tensioned between the rings 5 (the chains in the example shown are indicated only by dotted and dashed lines). The actual clamping of the respective chain at the rings can naturally take place in a number of ways that are obvious for a person skilled in the art. In the figure, it is suggested that the respective chain 8 is provided with an end piece that has a part that projects out from the respective ring 5 and that is provided with an elongated hole for accommodating, for example, a cotter, so that it can be locked at the ring to secure its function.
When, for example, the tracks 4 have been worn down to such a degree that the function of the feed roller is no longer satisfactory, the chains 8 are loosened and the rings 5 removed. The tracks 4 can now be easily drawn off from the hub of the roller and replaced by new tracks that are locked into place by means of the rings 5 and chains 8 as described previously. On many occasions, the tracks are worn down to a greater extent at one of their edges, in which case they can exchange places or be turned around before they are pushed back onto the hub of the roller.
One advantage that is obtained automatically with the invention is that stretching of the tensioning device 8 is achieved when the tracks 4 are fitted.
It should be realised that the invention can be designed in a number of different ways within the scope of the characteristics of claim 1. It can be considered, for example, to position the flange on one of the sides of the wheel rim and use only one elastic track 4 and ring 5, whereby the tensioning device 8 will extend between the ring 5 abutting the one side of the track and the flange 2, see Fig. 2.
---------------
Claims (9)
1. Feed roller for tree-processing machinery for feeding tree trunks through the machinery characterised in that it comprises an essentially cylindrically-shaped wheel rim (1) with a radially outwardly facing flange (2) located essentially at the centre of the wheel rim (1), a pair of tracks (4) of elastic material each arranged on the wheel rim on opposite sides of the flange (2) such that they abut the flange (2), plus a pair of rings (5) each arranged on the side of each track (4) opposite to the flange (2) such that they abut the track (4), wherein the pair of rings (5) abutting the outside of the tracks (4) are joined by means of a tensioning device (8).
2. The feed roller of claim 1 wherein the flange (2) has a plurality of holes or recesses adapted to receive the elastic material of the tracks (4).
3. The feed roller of claim 1 or 2 wherein the tensioning device is a chain.
4. The feed roller of any one of claims 1 to 3 which further comprises attachment means for attaching the tensioning device (8) to the rings (5) which attachment means comprise an end piece projecting outwardly from each of the rings (5) which end piece is provided with a hole for receiving securing means.
5. Procedure for fitting a feed roller to tree-processing machinery for feeding tree trunks through the machinery characterised in that a ring-shaped track (4) of elastic material is pushed onto either side of a wheel rim (1) provided with an outwardly facing flange (2) located essentially at the centre of the wheel rim such that the track (4) abuts the flange (2), a ring (5) is applied to the side of the track (4) opposite the flange (2) and a tensioning device (8) is brought between the ring (5) and another part of the feed roller on the opposite side of the ring (5).
6. The procedure of claim 5 wherein the flange (2) further comprises a plurality of holes or recesses which receive the elastic material of the tracks (4).
7. The procedure of claim 5 or 6 wherein the tensioning device is a chain.
8. The procedure of any one of claims 5 to 7 wherein the tensioning device (8) is attached to the ring (5) by means of an end piece projecting outwardly from the ring (5) which end piece is provided with a hole for receiving securing means.
9. The procedure of any one of claims 5 to 8 wherein the another part of the feed roller on the opposite side of the ring comprises an additional ring.
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| SE9904810A SE9904810L (en) | 1999-12-28 | 1999-12-28 | Feeder wheels and procedure for mounting feeder wheels |
| SE9904810-0 | 1999-12-28 | ||
| PCT/SE2000/002471 WO2001047672A1 (en) | 1999-12-28 | 2000-12-08 | Feed roller and a method for assembling a feed roller |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CA2394601A1 CA2394601A1 (en) | 2001-07-05 |
| CA2394601C true CA2394601C (en) | 2008-07-08 |
Family
ID=20418332
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA002394601A Expired - Lifetime CA2394601C (en) | 1999-12-28 | 2000-12-08 | Feed roller and a method for assembling a feed roller |
Country Status (4)
| Country | Link |
|---|---|
| AU (1) | AU2414801A (en) |
| CA (1) | CA2394601C (en) |
| SE (1) | SE9904810L (en) |
| WO (1) | WO2001047672A1 (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FI108394B (en) * | 1999-06-09 | 2002-01-31 | Partek Forest Oy Ab | Forestry pruning and felling blade |
| CA2414553C (en) * | 2002-12-13 | 2006-09-05 | Risley Enterprises Ltd. | Feed rolls for tree handling equipment |
| US6976515B2 (en) | 2003-02-06 | 2005-12-20 | Alain Duval | Modular drive wheel for log processors, delimbers and single grip harvesters |
| US6962178B2 (en) | 2003-05-29 | 2005-11-08 | Alain Duval | Tree processor |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| SE461513B (en) * | 1986-02-10 | 1990-02-26 | Tireco Ab | Feed wheel |
-
1999
- 1999-12-28 SE SE9904810A patent/SE9904810L/en not_active IP Right Cessation
-
2000
- 2000-12-08 WO PCT/SE2000/002471 patent/WO2001047672A1/en active Application Filing
- 2000-12-08 AU AU24148/01A patent/AU2414801A/en not_active Abandoned
- 2000-12-08 CA CA002394601A patent/CA2394601C/en not_active Expired - Lifetime
Also Published As
| Publication number | Publication date |
|---|---|
| SE514031C2 (en) | 2000-12-11 |
| CA2394601A1 (en) | 2001-07-05 |
| AU2414801A (en) | 2001-07-09 |
| SE9904810D0 (en) | 1999-12-28 |
| SE9904810L (en) | 2000-12-11 |
| WO2001047672A1 (en) | 2001-07-05 |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| MKEX | Expiry |
Effective date: 20201208 |