CA2279218A1 - Feed roller for a tree delimber - Google Patents
Feed roller for a tree delimber Download PDFInfo
- Publication number
- CA2279218A1 CA2279218A1 CA 2279218 CA2279218A CA2279218A1 CA 2279218 A1 CA2279218 A1 CA 2279218A1 CA 2279218 CA2279218 CA 2279218 CA 2279218 A CA2279218 A CA 2279218A CA 2279218 A1 CA2279218 A1 CA 2279218A1
- Authority
- CA
- Canada
- Prior art keywords
- sleeve
- cylindrical body
- exterior surface
- feed roller
- interior surface
- 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.)
- Abandoned
Links
Classifications
-
- A—HUMAN NECESSITIES
- A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
- A01G—HORTICULTURE; CULTIVATION OF VEGETABLES, FLOWERS, RICE, FRUIT, VINES, HOPS OR SEAWEED; FORESTRY; WATERING
- A01G23/00—Forestry
- A01G23/02—Transplanting, uprooting, felling or delimbing trees
- A01G23/095—Delimbers
- A01G23/097—Delimbers having a fixed delimbing head
-
- 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)
- Forests & Forestry (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Wood Science & Technology (AREA)
- Biodiversity & Conservation Biology (AREA)
- Ecology (AREA)
- Environmental Sciences (AREA)
- Rollers For Roller Conveyors For Transfer (AREA)
Abstract
A feed roller includes a cylindrical body having an exterior surface and a resilient sleeve overlaying the cylindrical body. The sleeve has an interior surface. A
axially oriented splined engagement is provided between exterior surface of the cylindrical body and the interior surface of the sleeve, thereby non-rotatably securing the sleeve to the cylindrical body. The sleeve can readily be removed and replaced, vulcanization is not required.
axially oriented splined engagement is provided between exterior surface of the cylindrical body and the interior surface of the sleeve, thereby non-rotatably securing the sleeve to the cylindrical body. The sleeve can readily be removed and replaced, vulcanization is not required.
Description
TITLE OF THE INVENTION:
Feed Roller For A Tree Delimber FIELD OF THE INVENTION
The present invention relates to a feed roller for use on a tree delimber.
BACKGROUND OF THE INVENTION
Feed rollers are used in the forestry industry to pull a tree through a set of knives of a tree delimber which removes limbs from the tree. Early feed rollers were a metal drum with formed metal plates bolted to the outside surface of the drum.
Vertical or diagonal bars or studs were welded onto an outside surface of these plates in order to give the feed rollers 1~~ enough traction to pull trees through delimbing knives to remove the limbs. However, the metal feed rollers tended to damage the surface of the trees.
More recent roller systems have replaced the metal plates with rubber which is vulcanized to the outside surface of the drum. A mesh chain is installed over the rubber to provide traction when feeding the log through the delimbing knives . The switch to rubber covered with a chain mesh served to reduce the damage to the surface of the trees. The problem with rubber coated feed rollers is that as the logs are fed through the roller system, the rubber wears on the feed rollers requiring them to be replaced after approximately 6000 hours of use.
Furthermore, if the vulcanization process does not work, the rubber tends to separate from the drum; resulting in the drum spinning inside the rubber overlay. Replacing the feed rollers is expensive, as a replacement rubber overlay must be vulcanized onto the outer surface of the drum.
SUI~IARY OF THE INVENTION
3~~ What is required is a feed roller construction which doesn't damage logs and is cost effective to maintain.
Feed Roller For A Tree Delimber FIELD OF THE INVENTION
The present invention relates to a feed roller for use on a tree delimber.
BACKGROUND OF THE INVENTION
Feed rollers are used in the forestry industry to pull a tree through a set of knives of a tree delimber which removes limbs from the tree. Early feed rollers were a metal drum with formed metal plates bolted to the outside surface of the drum.
Vertical or diagonal bars or studs were welded onto an outside surface of these plates in order to give the feed rollers 1~~ enough traction to pull trees through delimbing knives to remove the limbs. However, the metal feed rollers tended to damage the surface of the trees.
More recent roller systems have replaced the metal plates with rubber which is vulcanized to the outside surface of the drum. A mesh chain is installed over the rubber to provide traction when feeding the log through the delimbing knives . The switch to rubber covered with a chain mesh served to reduce the damage to the surface of the trees. The problem with rubber coated feed rollers is that as the logs are fed through the roller system, the rubber wears on the feed rollers requiring them to be replaced after approximately 6000 hours of use.
Furthermore, if the vulcanization process does not work, the rubber tends to separate from the drum; resulting in the drum spinning inside the rubber overlay. Replacing the feed rollers is expensive, as a replacement rubber overlay must be vulcanized onto the outer surface of the drum.
SUI~IARY OF THE INVENTION
3~~ What is required is a feed roller construction which doesn't damage logs and is cost effective to maintain.
According to the present invention there is provided a feed roller which includes a cylindrical body having an exterior surface and a resilient sleeve overlaying the cylindrical body. The sleeve has an interior surface. A
splined engagement is provided between exterior surface of the cylindrical body and the interior surface of the sleeve, thereby non-rotatably securing the sleeve to the cylindrical body.
lc) With the feed roller, as described above, a worn sleeve can be relatively easily slid off one end of the cylindrical body and a new sleeve can just as easily be slid into place.
Vulcanization of the sleeve to the cylindrical body is not required. Of course, if vulcanization is not required the 1~~ sleeve need no longer be elastomer; other materials with suitable resilient properties may now be used.
There are different configurations of splined engagement that can be used. Beneficial results have been obtained when 20 the splined engagement includes a plurality of parallel spaced elongate members secured to the exterior surface of the cylindrical body and a plurality of parallel spaced elongate channels on the interior surface of the sleeve. Each of the elongate channels are adapted to receive one of the elongate 2c> members. Such a splined engagement will hereinafter be illustrated and described.
It is still preferred that the sleeve have an exterior surface and that a mesh overlay covers the exterior surface of 30 the sleeve.
In order to prevent displacement of the sleeve relative to the cylindrical body it is preferred that the cylindrical body have a first end and a second end with end plates being 35 positioned at each of the first end and the second end of the cylindrical body to maintain the sleeve in position.
splined engagement is provided between exterior surface of the cylindrical body and the interior surface of the sleeve, thereby non-rotatably securing the sleeve to the cylindrical body.
lc) With the feed roller, as described above, a worn sleeve can be relatively easily slid off one end of the cylindrical body and a new sleeve can just as easily be slid into place.
Vulcanization of the sleeve to the cylindrical body is not required. Of course, if vulcanization is not required the 1~~ sleeve need no longer be elastomer; other materials with suitable resilient properties may now be used.
There are different configurations of splined engagement that can be used. Beneficial results have been obtained when 20 the splined engagement includes a plurality of parallel spaced elongate members secured to the exterior surface of the cylindrical body and a plurality of parallel spaced elongate channels on the interior surface of the sleeve. Each of the elongate channels are adapted to receive one of the elongate 2c> members. Such a splined engagement will hereinafter be illustrated and described.
It is still preferred that the sleeve have an exterior surface and that a mesh overlay covers the exterior surface of 30 the sleeve.
In order to prevent displacement of the sleeve relative to the cylindrical body it is preferred that the cylindrical body have a first end and a second end with end plates being 35 positioned at each of the first end and the second end of the cylindrical body to maintain the sleeve in position.
BRIEF DESCRIPTION OF THE DRAWINGS
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose 5. of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
FIGURE 1 is a perspective view of a feed roller fabricated in accordance with the teachings of the present invention.
FIGURE 2 is an end elevation view, in section, the feed roller illustrated in FIGURE 1.
FIGURE 3 is an end elevation view of a cylindrical body of the feed roller illustrated in FIGURE 1.
FIGURE 4 is an exploded top plan view of the cylindrical body illustrated in FIGURE 3.
FIGURE 5 is an end elevation view of a sleeve of the feed roller illustrated in FIGURE 1.
FIGURE 6 is an end elevation view of an end plate of the feed roller illustrated in FIGURE 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, a feed roller for a tree delimber generally identified by reference numeral 10, will now be described with reference to FIGURES 1 through 6.
Structure and Relationship of Parts:
Referring to FIGURE 1, there is provided a feed roller 10, which includes a cylindrical body 12. Referring to FIGURES 3 and 4, cylindrical body 12 has a first end 14, a second end 16 and an exterior surface 18. Referring to FIGURE 2, an elastomer sleeve 20 overlays cylindrical body 12. Referring to FIGURE 5, sleeve 20 has an interior surface 22 and an exterior surface 24. Referring to FIGURES 4 and 6, end plates 26 are positioned at each of first end 14 and second end 12 of cylindrical body 12 to maintain sleeve 20 in position.
Referring to FIGURE 2, a splined engagement 28 is provided between exterior surface 18 of cylindrical body 12 and interior surface 22 of sleeve 20. In the illustrated embodiment, splined engagement 28 includes a plurality of parallel spaced elongate members 30 which are secured to exterior surface 18 of cylindrical body 12 and a plurality of parallel spaced ~~ elongate channels 32 on interior surface 22 of sleeve 20. Each of elongate channels 32 are adapted to receive one of elongate members 30. It will be appreciated that other types of splined engagements 28 can be used to secure sleeve 20 to cylindrical body 12. A mesh overlay 34 covers exterior surface 24 of sleeve 20.
Operation:
The use and operation of feed roller 10 will now be lei described with reference to FIGURES 1 through 6. Referring to FIGURE 1, feed roller 10 is rotated to pull a tree through a delimber. Referring to FIGURE 2, splined engagement 28 between exterior surface 18 of cylindrical body 12 and interior surface 22 of sleeve 20 prevents sleeve 20 from rotating relative to cylindrical body 12. Referring to FIGURE 4, end plates 26 at first end 14 and second end 16 of cylindrical body 12 serve to maintain sleeve 20 in position thereby preventing axial displacement of sleeve 20 relative to cylindrical body 12.
Referring to FIGURE 1, mesh overlay 34 serves to provides traction.
Sleeve 20 will eventually become worn and will need to be replaced. Referring to FIGURE 4 in order to replace a worn sleeve 20, one of end plates 26 is removed and then worn sleeve 20 is slid off either first end 14 or second end 16 of cylindrical body 12. A new sleeve 20 can then be slid into place. End plate 26 is then replaced to maintain new sleeve 20 in position.
It will be appreciated that since vulcanization is no longer required that sleeve 20 need not be made from an elastomer. Other resilient materials may be used, such as various polymers.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word 5 are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
These and other features of the invention will become more apparent from the following description in which reference is made to the appended drawings, the drawings are for the purpose 5. of illustration only and are not intended to in any way limit the scope of the invention to the particular embodiment or embodiments shown, wherein:
FIGURE 1 is a perspective view of a feed roller fabricated in accordance with the teachings of the present invention.
FIGURE 2 is an end elevation view, in section, the feed roller illustrated in FIGURE 1.
FIGURE 3 is an end elevation view of a cylindrical body of the feed roller illustrated in FIGURE 1.
FIGURE 4 is an exploded top plan view of the cylindrical body illustrated in FIGURE 3.
FIGURE 5 is an end elevation view of a sleeve of the feed roller illustrated in FIGURE 1.
FIGURE 6 is an end elevation view of an end plate of the feed roller illustrated in FIGURE 1.
DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT
The preferred embodiment, a feed roller for a tree delimber generally identified by reference numeral 10, will now be described with reference to FIGURES 1 through 6.
Structure and Relationship of Parts:
Referring to FIGURE 1, there is provided a feed roller 10, which includes a cylindrical body 12. Referring to FIGURES 3 and 4, cylindrical body 12 has a first end 14, a second end 16 and an exterior surface 18. Referring to FIGURE 2, an elastomer sleeve 20 overlays cylindrical body 12. Referring to FIGURE 5, sleeve 20 has an interior surface 22 and an exterior surface 24. Referring to FIGURES 4 and 6, end plates 26 are positioned at each of first end 14 and second end 12 of cylindrical body 12 to maintain sleeve 20 in position.
Referring to FIGURE 2, a splined engagement 28 is provided between exterior surface 18 of cylindrical body 12 and interior surface 22 of sleeve 20. In the illustrated embodiment, splined engagement 28 includes a plurality of parallel spaced elongate members 30 which are secured to exterior surface 18 of cylindrical body 12 and a plurality of parallel spaced ~~ elongate channels 32 on interior surface 22 of sleeve 20. Each of elongate channels 32 are adapted to receive one of elongate members 30. It will be appreciated that other types of splined engagements 28 can be used to secure sleeve 20 to cylindrical body 12. A mesh overlay 34 covers exterior surface 24 of sleeve 20.
Operation:
The use and operation of feed roller 10 will now be lei described with reference to FIGURES 1 through 6. Referring to FIGURE 1, feed roller 10 is rotated to pull a tree through a delimber. Referring to FIGURE 2, splined engagement 28 between exterior surface 18 of cylindrical body 12 and interior surface 22 of sleeve 20 prevents sleeve 20 from rotating relative to cylindrical body 12. Referring to FIGURE 4, end plates 26 at first end 14 and second end 16 of cylindrical body 12 serve to maintain sleeve 20 in position thereby preventing axial displacement of sleeve 20 relative to cylindrical body 12.
Referring to FIGURE 1, mesh overlay 34 serves to provides traction.
Sleeve 20 will eventually become worn and will need to be replaced. Referring to FIGURE 4 in order to replace a worn sleeve 20, one of end plates 26 is removed and then worn sleeve 20 is slid off either first end 14 or second end 16 of cylindrical body 12. A new sleeve 20 can then be slid into place. End plate 26 is then replaced to maintain new sleeve 20 in position.
It will be appreciated that since vulcanization is no longer required that sleeve 20 need not be made from an elastomer. Other resilient materials may be used, such as various polymers.
In this patent document, the word "comprising" is used in its non-limiting sense to mean that items following the word 5 are included, but items not specifically mentioned are not excluded. A reference to an element by the indefinite article "a" does not exclude the possibility that more than one of the element is present, unless the context clearly requires that there be one and only one of the elements.
It will be apparent to one skilled in the art that modifications may be made to the illustrated embodiment without departing from the spirit and scope of the invention as hereinafter defined in the Claims.
Claims (6)
1. ~A feed roller, comprising;
a cylindrical body having an exterior surface;
a resilient sleeve overlaying the cylindrical body, the sleeve having an interior surface; and an axially oriented splined engagement between exterior surface of the cylindrical body and the interior surface of the sleeve, thereby non-rotatably securing the sleeve to the cylindrical body.
a cylindrical body having an exterior surface;
a resilient sleeve overlaying the cylindrical body, the sleeve having an interior surface; and an axially oriented splined engagement between exterior surface of the cylindrical body and the interior surface of the sleeve, thereby non-rotatably securing the sleeve to the cylindrical body.
2. ~The feed roller as defined in Claim 1, wherein the splined engagement includes a plurality of parallel spaced elongate members secured to the exterior surface of the cylindrical body and a plurality of parallel spaced elongate channels on the interior surface of the sleeve, each of the elongate channels being adapted to receive one of the elongate members.
3. ~The feed roller as defined in Claim 1, wherein the sleeve is made from one of a polymer or an elastomer.
4. ~The feed roller as defined in Claim 1, wherein the sleeve has an exterior surface and a mesh overlay covers the exterior surface of the sleeve.
5. ~The feed roller as defined in Claim 1, wherein the cylindrical body has a first end and a second end, end plates being positioned at each of the first end and the second end of the cylindrical body thereby preventing axial. displacement of the sleeve.
6. A feed roller, comprising;
a cylindrical body having a first end, a second end and an exterior surface;
an elastomer sleeve overlaying the cylindrical body, the sleeve having an interior surface and an exterior surface;
end plates positioned at each of the first end and the second end of the cylindrical body, thereby preventing axial displacement of the sleeve;
an axially oriented splined engagement between exterior surface of the cylindrical body and the interior surface of the sleeve, the splined engagement including a plurality of parallel spaced elongate members secured to the exterior surface of the cylindrical body and a plurality of parallel spaced elongate channels on the interior surface of the sleeve, each of the elongate channels being adapted to receive one of the elongate members; and a mesh overlay covering the exterior surface of the sleeve.
a cylindrical body having a first end, a second end and an exterior surface;
an elastomer sleeve overlaying the cylindrical body, the sleeve having an interior surface and an exterior surface;
end plates positioned at each of the first end and the second end of the cylindrical body, thereby preventing axial displacement of the sleeve;
an axially oriented splined engagement between exterior surface of the cylindrical body and the interior surface of the sleeve, the splined engagement including a plurality of parallel spaced elongate members secured to the exterior surface of the cylindrical body and a plurality of parallel spaced elongate channels on the interior surface of the sleeve, each of the elongate channels being adapted to receive one of the elongate members; and a mesh overlay covering the exterior surface of the sleeve.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2279218 CA2279218A1 (en) | 1999-07-29 | 1999-07-29 | Feed roller for a tree delimber |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA 2279218 CA2279218A1 (en) | 1999-07-29 | 1999-07-29 | Feed roller for a tree delimber |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA2279218A1 true CA2279218A1 (en) | 2001-01-29 |
Family
ID=4163895
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA 2279218 Abandoned CA2279218A1 (en) | 1999-07-29 | 1999-07-29 | Feed roller for a tree delimber |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA2279218A1 (en) |
-
1999
- 1999-07-29 CA CA 2279218 patent/CA2279218A1/en not_active Abandoned
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| EEER | Examination request | ||
| FZDE | Dead |