CA1112213A - Device for collecting and processing tree stumps - Google Patents
Device for collecting and processing tree stumpsInfo
- Publication number
- CA1112213A CA1112213A CA325,486A CA325486A CA1112213A CA 1112213 A CA1112213 A CA 1112213A CA 325486 A CA325486 A CA 325486A CA 1112213 A CA1112213 A CA 1112213A
- Authority
- CA
- Canada
- Prior art keywords
- container
- stumps
- opening
- stump
- vehicle
- 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
Links
- 238000007599 discharging Methods 0.000 claims description 2
- 239000004576 sand Substances 0.000 claims description 2
- 238000000605 extraction Methods 0.000 abstract description 3
- 239000002994 raw material Substances 0.000 abstract 2
- 239000002023 wood Substances 0.000 abstract 2
- 239000000835 fiber Substances 0.000 abstract 1
- 238000003306 harvesting Methods 0.000 abstract 1
- 238000004519 manufacturing process Methods 0.000 abstract 1
- 238000000034 method Methods 0.000 abstract 1
- 238000000926 separation method Methods 0.000 abstract 1
- 239000000463 material Substances 0.000 description 2
- BHMLFPOTZYRDKA-IRXDYDNUSA-N (2s)-2-[(s)-(2-iodophenoxy)-phenylmethyl]morpholine Chemical compound IC1=CC=CC=C1O[C@@H](C=1C=CC=CC=1)[C@H]1OCCNC1 BHMLFPOTZYRDKA-IRXDYDNUSA-N 0.000 description 1
- 241000518994 Conta Species 0.000 description 1
- 101100258093 Drosophila melanogaster stum gene Proteins 0.000 description 1
- 101100258095 Mus musculus Stum gene Proteins 0.000 description 1
- 230000004323 axial length Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- 238000006073 displacement reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 239000012530 fluid Substances 0.000 description 1
- 230000005484 gravity Effects 0.000 description 1
- 238000003780 insertion Methods 0.000 description 1
- 230000037431 insertion Effects 0.000 description 1
- PXUQTDZNOHRWLI-OXUVVOBNSA-O malvidin 3-O-beta-D-glucoside Chemical compound COC1=C(O)C(OC)=CC(C=2C(=CC=3C(O)=CC(O)=CC=3[O+]=2)O[C@H]2[C@@H]([C@@H](O)[C@H](O)[C@@H](CO)O2)O)=C1 PXUQTDZNOHRWLI-OXUVVOBNSA-O 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
Landscapes
- Refuse-Collection Vehicles (AREA)
Abstract
Kockums Industri AB
ABSTRACT OF DISCLOSURE
A device for collecting and processing tree stumps Stumps remaining after conventional wood harvesting represent an important quantity of fibre raw material and, conse-quently, the stumps have lately been exploited to a higher degree for the production of chips. The stumps are extracted from the ground by means of machines according to various methods some of which also comprise separation of the stump into smaller portions or the crushing of the stump. The stump extracting device may be combined with a device for transporting the stump, but frequently the extraction and the collection of the stumps are performed by means of separate equipments.
An inconvenience with stumps as a wood raw material is that the handling and the processing thereof into chips is complicated by earth and stones being entrained at the extrac-tion of the stump, and the removal thereof causes a number of problems.
ABSTRACT OF DISCLOSURE
A device for collecting and processing tree stumps Stumps remaining after conventional wood harvesting represent an important quantity of fibre raw material and, conse-quently, the stumps have lately been exploited to a higher degree for the production of chips. The stumps are extracted from the ground by means of machines according to various methods some of which also comprise separation of the stump into smaller portions or the crushing of the stump. The stump extracting device may be combined with a device for transporting the stump, but frequently the extraction and the collection of the stumps are performed by means of separate equipments.
An inconvenience with stumps as a wood raw material is that the handling and the processing thereof into chips is complicated by earth and stones being entrained at the extrac-tion of the stump, and the removal thereof causes a number of problems.
Description
~2Z:~3 Th~ basic idea o~ ~he pxesenk in~ention is tha~ earth, stones and other loose material entrained with thP stump is removed from the stump at a phase as early as possible after the extraction of the stump and preferably already in connection with the collection of the stumps for fu.rther transport to the chip cutting station.
According to a broad aspect, the invention relates to:
~, A de~ice for collecting and processinq ex~racted tree stumps comprising a cylindrical container rotatably supported on the frame of a vehicle, said container being adapted to receive a plurality of stumps and being provided wi~h an opening located at one end of the container or introducing the stump into the container and an opening located at the same or at the opposite end for dis~harging of the stumps therefrom, a shutter supported by said frame and forming an upwardly directed charying opening for introducing the stumps and adapted to guide the stumps intro-duced from above through said charging opening into the container~
an opening, covered by a grid, in the cylindrical wall of the container through which opening earth, sand, etc. can pass out from the container and motor driven means for rotating said container.
Preferably, the container is elongated and the axis of rotation thereof extends in the longitudinal direction of the container and of the supporting vehicle. The container may be closed at one end, viz., the front end by an end wall, while the opening for charging and discharging the stumps is provided at the opposite, viz. the rear end and adapted to be closed by a removable shutter, which may be provided with an upwardly directed insertion aperture for the stumps and b~
adapted to guide the stumps into the container. The container may be circularly cylindrical ln cross section and be rotatably supported near the ends ~hereof by means of a combination of runners or rollers unrolling agalnst the conta:iner in a manner known per se, in order to permit maximum size of the charge and di~charge opening ~.~Lf>
Moreover, the container may be proviaed with a separate discharge opening for earth, stones etc. released rom the stumps and internal means for the displacement o~ tha stumps longitudinally of the container during the rotation th~reof.
The invention will hereinbelow be described more in detail with reference to the accompanying drawings, which schematically illustra~e one embodiment and on which Fig. 1 shows a device according to this embodiment in side view, while Figs. 2 and 3 are different cross sectional views of the device.
- 2a -- .$
3 ~ ;213 , In Fig. 1 there is shown a vehicle of forwarder type with a chassis or frame 10. At the rear poxtion of the f~ame there is ~rovided a ~referably U-shaped stand 1, which by means of runners or rollers 5 supports the rear end of an elongated circularly cylindrical container 2. At the rear end thereo~ the container is provided with a charge and discharge opening for stumps and said opening extends substantially across the total internal cross section of the container. At its forward end the container is completely closed by means of an end wall 15 from which a shaft 3 extends, which is rotatably supported in a bearing bracket 13 mounted on the frame of the vehicle and is driven by means of a hydraulic motor 4 via conventional transmission means, which motor may be supplied with pressurized fluid from the hydraulic system of the vehicle~
In the circularly cylindrical container a helically extending cam 6 is provided protruding inwardly from the container wall, said cam extending from a position adjacent the forward end portion of the container to a position adjacent the rear end thereof. Near the front end o~ the container there is an opening 7 in the container wall, said opening occupying about 1/3 o~ therperiphery of the container wall and being covered by a ~rid of flat bars 16.
At the rear end of the container a shutter 8 is provided which covers the charge and discharge o~enin~ 14 o~ the container.
The shutter is pivotallv mounted on the stand 1 adjacent the top end thereof by means of pivots 17 which are substantially horizontal and extend perpendicularly to the longitudinal direction of the container. The shutter is adapted to be swung upwards and downwards by means of hydraulic cylinders 9. A
horizontal section through the shutter 8 at the upper end thereof is U-shaped, whereby an upwardly directed opening 18 is formed, through which stumps may be inserted. After having b~en dropped through said opening said stumps will slide along the rear wall 19 of the shutter which wall extends obli~uely inwards towards the container. Stumps are inserted in this manner by means of a conventional crane 11 mounted on the vehicle and provided with .
. .
" ~
.:
IIL%2~L3 gripping means 12.
The device according to the embodiment illustrated opera-tes in the following manner.
The vehicle is driven across the area where stump extrac- J
tion has been carried out and the extracted stumrs are collected by means of the crane 11 and are loaaed through the opening 18 'i of the shutter 8 into the container 2 which is maintained in ,~
rotation by the motor 4 in a direction of ro~ation such that the cam 6 will feea the stum~s in a direction towards the forward end wall 15 of the container. The stumps are accumulated in the forward ~ortion of the container. During the rotation of the ,~
container the stumps will partly follow the container in its r~otation but due to the gravity forces, which are many times stronger than the centrifugal force on the stumps caused by l3 the rotation of the container, the stumps will always fall back ¦
to the bottom of the container, whereby a tumbling effect will be provided, so that the stumps are exposed to shocks and wear ~I 7 against each other and may also be broken apart into s~aller pieces. Earth and stones originally adhering to the inserted stumps wiIl be shaken and worn loose and will fall to the bottom of the container and be moved forwardly under the action of the helical cam so as to finallv arrive at the opening 7 in the ;~
forward end ~ortion of the container and fall out through the grid in said opening~ when said opening has arrived in its ~l lower position during the rotation of the container. The container should not be completely filled with stumps, but only half-way or slightly more so that there is a sufficient free space in the ~;
container for the stumps to move and fall in the manner described above.
When a sufficient quantity of stumps and stump portions have been introduced into the container the vehicle is driven to a ¦~
place for unloading the stumps. There the shutter 8 is swung ~l upwardly by means of the hydraulic cylinders 9 and the direction of rotation of the container is reversed and at the same time it may be increased, e.g. doubled. This will result in the stump material being screwed backwards in the container and discharged through the opening 14.
, :
~ .. . , ~.
: ~ , ~,,, : :
-': : ~,- , : ' ' :
;
~ 2~3 The invention is not restricked to the embodiment illustrated i and described, since the latter can be modified and varied in j~
different ways within the scope of the invention. ¦j According to one modification of the embodiment it is possible, in addition to or possibly instead of the opening 7 provided with a grid at the forward portion of the container, i to provide openings in the container mantle at other locations thereof, e.g. a plurality of openings or apertures distributed over the whole or a large portion of the mantle surface in a convenient manner, whereby some portions of earth etc. extracted ,';
from the stumps can leave the container at an early stage. These 1' openings or apertures may have a length of about 30 to 50 cm, for instance 40 cm, and a width of about 20 to 40 mm, for instance 30 mm, and preferably extend in the longitudinal direction of j the container. 1' It is understood that instead of only one helical cam 6 two ~
or more such cams may be provid~d at the internal wall of the ¦
container, the pitch of said helical cams being substantially ~
steeper than in the case illustrated in which only one ca~ is ,1 provided. In one preferred embodiment the container may have an f axial length of about 4 to 5 m, and be provided with three cams, !
each having a pitch of about one turn per 10 m axial extension.
i`
.
.
" : , ~
~ ~ ., ~ ' , '` ' . , :: ;
According to a broad aspect, the invention relates to:
~, A de~ice for collecting and processinq ex~racted tree stumps comprising a cylindrical container rotatably supported on the frame of a vehicle, said container being adapted to receive a plurality of stumps and being provided wi~h an opening located at one end of the container or introducing the stump into the container and an opening located at the same or at the opposite end for dis~harging of the stumps therefrom, a shutter supported by said frame and forming an upwardly directed charying opening for introducing the stumps and adapted to guide the stumps intro-duced from above through said charging opening into the container~
an opening, covered by a grid, in the cylindrical wall of the container through which opening earth, sand, etc. can pass out from the container and motor driven means for rotating said container.
Preferably, the container is elongated and the axis of rotation thereof extends in the longitudinal direction of the container and of the supporting vehicle. The container may be closed at one end, viz., the front end by an end wall, while the opening for charging and discharging the stumps is provided at the opposite, viz. the rear end and adapted to be closed by a removable shutter, which may be provided with an upwardly directed insertion aperture for the stumps and b~
adapted to guide the stumps into the container. The container may be circularly cylindrical ln cross section and be rotatably supported near the ends ~hereof by means of a combination of runners or rollers unrolling agalnst the conta:iner in a manner known per se, in order to permit maximum size of the charge and di~charge opening ~.~Lf>
Moreover, the container may be proviaed with a separate discharge opening for earth, stones etc. released rom the stumps and internal means for the displacement o~ tha stumps longitudinally of the container during the rotation th~reof.
The invention will hereinbelow be described more in detail with reference to the accompanying drawings, which schematically illustra~e one embodiment and on which Fig. 1 shows a device according to this embodiment in side view, while Figs. 2 and 3 are different cross sectional views of the device.
- 2a -- .$
3 ~ ;213 , In Fig. 1 there is shown a vehicle of forwarder type with a chassis or frame 10. At the rear poxtion of the f~ame there is ~rovided a ~referably U-shaped stand 1, which by means of runners or rollers 5 supports the rear end of an elongated circularly cylindrical container 2. At the rear end thereo~ the container is provided with a charge and discharge opening for stumps and said opening extends substantially across the total internal cross section of the container. At its forward end the container is completely closed by means of an end wall 15 from which a shaft 3 extends, which is rotatably supported in a bearing bracket 13 mounted on the frame of the vehicle and is driven by means of a hydraulic motor 4 via conventional transmission means, which motor may be supplied with pressurized fluid from the hydraulic system of the vehicle~
In the circularly cylindrical container a helically extending cam 6 is provided protruding inwardly from the container wall, said cam extending from a position adjacent the forward end portion of the container to a position adjacent the rear end thereof. Near the front end o~ the container there is an opening 7 in the container wall, said opening occupying about 1/3 o~ therperiphery of the container wall and being covered by a ~rid of flat bars 16.
At the rear end of the container a shutter 8 is provided which covers the charge and discharge o~enin~ 14 o~ the container.
The shutter is pivotallv mounted on the stand 1 adjacent the top end thereof by means of pivots 17 which are substantially horizontal and extend perpendicularly to the longitudinal direction of the container. The shutter is adapted to be swung upwards and downwards by means of hydraulic cylinders 9. A
horizontal section through the shutter 8 at the upper end thereof is U-shaped, whereby an upwardly directed opening 18 is formed, through which stumps may be inserted. After having b~en dropped through said opening said stumps will slide along the rear wall 19 of the shutter which wall extends obli~uely inwards towards the container. Stumps are inserted in this manner by means of a conventional crane 11 mounted on the vehicle and provided with .
. .
" ~
.:
IIL%2~L3 gripping means 12.
The device according to the embodiment illustrated opera-tes in the following manner.
The vehicle is driven across the area where stump extrac- J
tion has been carried out and the extracted stumrs are collected by means of the crane 11 and are loaaed through the opening 18 'i of the shutter 8 into the container 2 which is maintained in ,~
rotation by the motor 4 in a direction of ro~ation such that the cam 6 will feea the stum~s in a direction towards the forward end wall 15 of the container. The stumps are accumulated in the forward ~ortion of the container. During the rotation of the ,~
container the stumps will partly follow the container in its r~otation but due to the gravity forces, which are many times stronger than the centrifugal force on the stumps caused by l3 the rotation of the container, the stumps will always fall back ¦
to the bottom of the container, whereby a tumbling effect will be provided, so that the stumps are exposed to shocks and wear ~I 7 against each other and may also be broken apart into s~aller pieces. Earth and stones originally adhering to the inserted stumps wiIl be shaken and worn loose and will fall to the bottom of the container and be moved forwardly under the action of the helical cam so as to finallv arrive at the opening 7 in the ;~
forward end ~ortion of the container and fall out through the grid in said opening~ when said opening has arrived in its ~l lower position during the rotation of the container. The container should not be completely filled with stumps, but only half-way or slightly more so that there is a sufficient free space in the ~;
container for the stumps to move and fall in the manner described above.
When a sufficient quantity of stumps and stump portions have been introduced into the container the vehicle is driven to a ¦~
place for unloading the stumps. There the shutter 8 is swung ~l upwardly by means of the hydraulic cylinders 9 and the direction of rotation of the container is reversed and at the same time it may be increased, e.g. doubled. This will result in the stump material being screwed backwards in the container and discharged through the opening 14.
, :
~ .. . , ~.
: ~ , ~,,, : :
-': : ~,- , : ' ' :
;
~ 2~3 The invention is not restricked to the embodiment illustrated i and described, since the latter can be modified and varied in j~
different ways within the scope of the invention. ¦j According to one modification of the embodiment it is possible, in addition to or possibly instead of the opening 7 provided with a grid at the forward portion of the container, i to provide openings in the container mantle at other locations thereof, e.g. a plurality of openings or apertures distributed over the whole or a large portion of the mantle surface in a convenient manner, whereby some portions of earth etc. extracted ,';
from the stumps can leave the container at an early stage. These 1' openings or apertures may have a length of about 30 to 50 cm, for instance 40 cm, and a width of about 20 to 40 mm, for instance 30 mm, and preferably extend in the longitudinal direction of j the container. 1' It is understood that instead of only one helical cam 6 two ~
or more such cams may be provid~d at the internal wall of the ¦
container, the pitch of said helical cams being substantially ~
steeper than in the case illustrated in which only one ca~ is ,1 provided. In one preferred embodiment the container may have an f axial length of about 4 to 5 m, and be provided with three cams, !
each having a pitch of about one turn per 10 m axial extension.
i`
.
.
" : , ~
~ ~ ., ~ ' , '` ' . , :: ;
Claims (9)
OR PRIVILEGE IS CLAIMED ARE DEFINED AS FOLLOWS:
1. A device for collecting and processing extracted tree stumps comprising a cylindrical container rotatably supported on the frame of a vehicle, said container being adapted to receive a plurality of stumps and being provided with an opening located at one end of the container for introducing the stump into the container and an opening located at the same or at the opposite end for discharging of the stumps therefrom, a shutter supported by said frame and forming an upwardly directed charging opening for introducing the stumps and adapted to guide the stumps intro-duced from above through said charging opening into the container, an opening, covered by a grid, in the cylindrical wall of the container through which opening earth, sand, etc. can pass out from the container and motor driven means for rotating said container.
2. A device as claimed in claim 1 in which the container is elongated and extends in the longitudinal direction of the vehicle.
3. A device as claimed in claim 2 in which said container is substantially circularly cylindrical in cross section.
4. A device as claimed in claim 1 in which the forward end of the container, as seen in the direction movement of the vehicle, is closed by an end wall and that the opening for introducing stumps into the container is located at the rear end of the container and also forms the discharge opening thereof.
5. A device as claimed in claim 4 wherein said shutter is movable between a first position in which it closes said opening and a second position in which said opening is exposed.
6. A device as claimed in claim 5 in which the shutter is pivotally supported by the vehicle chassis and is adapted to be actuated by hydraulic drive means for the movement thereof.
7. A device as claimed in claim 4 comprising a shaft connected to and extending from the forward end wall of the container and coupled to said motor driven means, said shaft being supported by a bearing support, mounted at the vehicle chassis.
8. A device as claimed in claim 3 comprising cams or the like mounted at the internal wall of the container and extending helically along axis of the container, said cams being adapted to displace the stumps longitudinally of the container during the rotation of the container.
9. A device as claimed in claim 1 comprising a plurality of openings or apertures in the container wall, distributed over the mantle surface of the container, preferably in the form of slots extending in the longitudinal direction of the container.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA325,486A CA1112213A (en) | 1979-04-12 | 1979-04-12 | Device for collecting and processing tree stumps |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CA325,486A CA1112213A (en) | 1979-04-12 | 1979-04-12 | Device for collecting and processing tree stumps |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CA1112213A true CA1112213A (en) | 1981-11-10 |
Family
ID=4113974
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CA325,486A Expired CA1112213A (en) | 1979-04-12 | 1979-04-12 | Device for collecting and processing tree stumps |
Country Status (1)
| Country | Link |
|---|---|
| CA (1) | CA1112213A (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2438991A1 (en) | 2010-09-28 | 2012-04-11 | UPM-Kymmene Corporation | A method for processing of wood raw material, and a crusher for wood raw material |
-
1979
- 1979-04-12 CA CA325,486A patent/CA1112213A/en not_active Expired
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2438991A1 (en) | 2010-09-28 | 2012-04-11 | UPM-Kymmene Corporation | A method for processing of wood raw material, and a crusher for wood raw material |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| MKEX | Expiry |