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WO2009136323A1 - Dispositif d'écorçage - Google Patents

Dispositif d'écorçage Download PDF

Info

Publication number
WO2009136323A1
WO2009136323A1 PCT/IB2009/051749 IB2009051749W WO2009136323A1 WO 2009136323 A1 WO2009136323 A1 WO 2009136323A1 IB 2009051749 W IB2009051749 W IB 2009051749W WO 2009136323 A1 WO2009136323 A1 WO 2009136323A1
Authority
WO
WIPO (PCT)
Prior art keywords
rotating
logs
rotating elements
rotation
debarking
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.)
Ceased
Application number
PCT/IB2009/051749
Other languages
English (en)
Spanish (es)
Inventor
Juan Esquenet Callu
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Individual
Original Assignee
Individual
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Individual filed Critical Individual
Publication of WO2009136323A1 publication Critical patent/WO2009136323A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B27—WORKING OR PRESERVING WOOD OR SIMILAR MATERIAL; NAILING OR STAPLING MACHINES IN GENERAL
    • B27L—REMOVING BARK OR VESTIGES OF BRANCHES; SPLITTING WOOD; MANUFACTURE OF VENEER, WOODEN STICKS, WOOD SHAVINGS, WOOD FIBRES OR WOOD POWDER
    • B27L1/00—Debarking or removing vestiges of branches from trees or logs; Machines therefor
    • B27L1/10—Debarking or removing vestiges of branches from trees or logs; Machines therefor using rotatable tools

Definitions

  • the present invention relates to a debarking device.
  • the debarking device of the present invention belongs to the field of the wood industry.
  • Various types of debarking machines are known to remove the bark from tree trunks, and leave them prepared for further processing.
  • machines can be classified essentially into two groups: fixed machines, which are normally arranged in large industrial plants, and that have great performance, size and cost, and mobile machines, which can be moved to a specific location to perform the debarking of the trees in situ.
  • Another type of fixed debarking machine comprises an upper axis and a lower axis equipped with chains that rotate at high speed, said chains hitting the logs and causing the bark to detach.
  • This type of machine consumes a lot of energy and deteriorates the wood considerably.
  • Another type consists of a machine that comprises large rotating cylinders, inside which the trunks are arranged, which hit each other, thus detaching the crust.
  • Such machines have a very large size and a high cost.
  • a fixed machine consisting of a rotor system and blades is also known, including a ring through which the trunk passes and different moving parts consisting of blades, scrapers, dampers, feeder rollers, centering rollers, etc.
  • the drawback of said machine is that logs that have knots, branch remains or a certain curvature are not bark correctly, and it is necessary to bark them by other procedures.
  • Mobile machines have a smaller size and performance compared to fixed machines, but have the great advantage that they avoid unnecessary transport of the bark of logs to industrial plants.
  • a known configuration consists of a rotor and blade system similar to that described above. In this case, the machine works transversely with respect to the displacement of the tractor that carries the debarking device.
  • the drawback of said configuration in addition to the aforementioned, is that it has a considerable size, which makes it difficult to use it in some locations.
  • Another known mobile device consists of a debarking head that is mounted on the mechanical arms of excavators and the like. This device receives the mechanical energy through the hydraulic circuit of the excavator, and has a high performance, but also a great maintenance complexity and a high cost.
  • said head is not the most suitable for barking logs of reduced diameter. Additionally, at the end of the barking of the logs, they are deposited on the ground, so that the wood gets dirty with dirt, sand and stones, which makes its subsequent processing difficult.
  • the objective of the present invention is to solve the drawbacks of the devices known in the art, by providing a debarking device comprising at least two adjacent rotating elements for barking logs in contact with them, characterized by the fact that each of The rotating elements comprise an elongated body whose axis of rotation is substantially parallel to the longitudinal axis of the logs at the time of debarking and by the fact that each of the rotating elements comprises at least one helical protuberance on its outer surface which is extends in the longitudinal direction of said rotating element.
  • the helical protuberances of the rotating elements are responsible for removing the bark from the logs arranged thereon by the effect of scraping on said bark.
  • the rotating elements are arranged with their rotation axes parallel to each other and adjacently according to the direction transverse to said rotation axes, so that the trunks are arranged between both rotating elements and parallel to the rotation axes. Therefore, the trunks are bark quickly, since the helical protuberances of the rotating elements work on the entire surface of the trunks simultaneously.
  • this configuration allows only a couple of rotating elements to be disposed to bark the logs, so that it is possible to manufacture a debarking device with few moving elements, of small size and great simplicity, making it especially suitable for use as a mobile debarking device.
  • the rotating elements comprise a conical shape.
  • the rotating elements comprise a cylindrical shape.
  • the shape of the rotating elements may vary according to the needs.
  • the passage of the at least one helical protuberance in each rotating element is different with respect to the passage of the at least one helical protuberance of the adjacent rotating element.
  • the speed of rotation of each rotating element is different with respect to the speed of rotation of the adjacent rotating element.
  • the direction of rotation of each rotating element is opposite with respect to the direction of rotation of the adjacent rotating element.
  • said protuberances Thanks to the arrangement of helical protuberances with a different passage in each of the rotating elements, said protuberances have a different movement with an equivalent angular velocity. In this way, thanks to the different movement between the protuberances of each rotating element, an effective scraping of the bark of the logs is obtained.
  • the at least one helical protuberance comprises relief elements at its outer edge.
  • relief elements which may consist of a plurality of teeth, notches, etc., increase the scratching action of the edges of the helical protuberances on the bark of the logs.
  • the debarking device comprises a pre-cutting device arranged before the rotating elements and which performs at least a longitudinal cut in the bark of the logs.
  • Said pre-cutting device allows a longitudinal cut to be made in the bark of the logs before its passage to the rotating elements.
  • Said longitudinal cut facilitates the debarking of the trunks by the rotating elements.
  • the debarking device comprises at least one stop disposed on the rotating elements that prevents the log stock of the device.
  • the axes of rotation of the rotating elements are inclined with respect to the ground.
  • Said inclination allows the entrance to the debarking device to be at a lower height from the ground to facilitate the arrangement of the trunks therein and that the exit of the device is at a higher height from the ground, facilitating the placement of the trunks already debarked in a medium Of transport.
  • the rotating elements comprise a length greater than that of the logs.
  • the trunks are barked more quickly, since the helical protuberances of the rotating elements act simultaneously over the entire surface length of each trunk.
  • the debarking device of the present invention comprises means for transporting it, said means being able to be Transport some wheels.
  • the configuration and characteristics of the debarking device according to the present invention make it especially indicated as a mobile device, thanks to its simplicity and small size.
  • Figure 1 is a side elevational view of an embodiment of the device of the present invention
  • Figure 2 is a top plan view of the device of Figure 1.
  • the debarking device essentially comprises a chassis or enclosure 1 having a pair of rotating bodies 2 mounted inside.
  • the rotating bodies 2 consist in this case of a pair of truncated cones, arranged with their axis of rotation 3 in parallel, so that both rotating bodies 2 are located adjacent to each other according to the transverse direction with respect to their own axes. Turn 3.
  • the rotating bodies 2 are supported on the chassis 1 by means of respective 4 axes.
  • Each rotating body 2 has on its outer surface a helical protuberance 5 as a blade that extends longitudinally and spirally around said surface and whose characteristics will be explained in more detail below.
  • the operation of the debarking device is as follows.
  • the logs to be barked (not shown) are disposed on the two adjacent rotating bodies 2, in the intermediate space between them and in simultaneous contact with the helical protuberances 5 of each of said rotating bodies 2.
  • Both rotating bodies 2 rotate with respect to their axes of rotation 3.
  • the bodies 2 rotate in the opposite direction to each other, and the respective helical protuberances 5 are inverse with each other.
  • the rotation of the rotating bodies 2 is such that the helical protuberances 5 tend to move the trunk or logs arranged thereon in an exit direction (see arrow S).
  • the helical protuberances 5 also perform the function of removing the bark from the logs by friction.
  • the friction of the protuberances 5 with the logs to remove the bark can be obtained in different ways.
  • Said friction can be obtained by arranging helical protuberances 5 of the same type in each rotating body 2 but applying a different rotation speed to each of said bodies 2.
  • Another way of obtaining friction is by designing each of the helical protuberances 5 with a step different, being able to rotate the respective rotating bodies 2 at the same angular velocity. That is, the scraping effect between said protuberances 5 and the cortex is produced thanks to the helical protuberances 5 of each rotating body 2 having a different movement from each other. Regardless of the type of configuration of the helical protuberances 5, they should always move the logs towards the exit of the debarking device.
  • the trunks arranged on both rotating bodies 2 are displaced in the exit direction at the same time that their bark is eliminated by the friction effect of the protuberances.
  • helical 5 on it As mentioned above, in the present embodiment, in order to obtain the displacement of the trunks in the exit direction S of the debarking device, the rotational movement of both rotating bodies 2 is opposite each other and the helical protuberances 5 They have an inverse configuration with each other.
  • the truncated conical shaped rotating bodies 2 are arranged with their smaller diameter end located next to the larger diameter end of the adjacent rotating body 2. This configuration makes it possible to obtain an intermediate space between both rotating bodies 2 deeper, so that the trunks that are located in said intermediate space are in contact with a larger surface of said rotating bodies 2 and are barked more quickly by the helical protuberances 5.
  • the arrangement of the conical rotating bodies 2 could also be inverse, that is, with the smaller diameter end located next to the smaller diameter end of the adjacent rotating body, in correspondence with the input end of the debarking device.
  • This configuration will facilitate the feeding of logs at the entrance of the device, since it will be possible to arrange said entrance at lower ground height.
  • it will also facilitate the loading of logs already debarked in a means of transport, since the larger diameter ends of the conical rotating bodies will be located in correspondence with the outlet end of the debarking device, so that it will be possible to arrange said higher ground clearance.
  • the device of the present invention may include cylindrical rotating bodies, instead of truncated cone-shaped rotating bodies.
  • both rotating bodies 2 are separated from each other by a distance D, and the respective helical protuberances 5 are also separated from each other by a distance d.
  • the approximate separation distance d between the outer edges of the protuberances 5 of each body 2 can be 4 centimeters. The remains of bark will be expelled through said intermediate space between the rotating bodies 2.
  • the height of the protuberance 5 of a rotating body 2 may be the same or different from the height of the protuberance 5 of the adjacent rotating body 2 in a given section.
  • said difference can be compensated by increasing or decreasing the height of the protuberance 5 of the adjacent rotating body 2 inversely with respect to the height of the protuberance 5 of the other body swivel 2. Thanks to said height difference between the protuberances 5 a better debarking of the crooked logs is obtained.
  • the helical protuberances 5 may comprise at its outer edge a series of reliefs 6 such as notches, teeth, etc. that facilitate the debarking action of the device.
  • the rotation axes 3 of the rotating bodies 2 will be inclined with respect to the ground, as can be seen in Figure 1, so that one of its ends located on the exit side of the device is at a greater height than the floor than the end located on the input side of the device.
  • This configuration will facilitate the placement of logs at the entrance of the device and the exit of logs already bark for disposal in a means of transport, such as a truck. In this way, the logs can be placed directly on a trailer for later transport, avoiding their arrangement on the ground and its contamination.
  • the length of each rotating body 2 will preferably be greater than the length of the logs to be barked. Thanks to this feature, the logs can be barked simultaneously on their entire surface, since they will always be arranged for at least a period of time with their entire length in contact with the helical protuberances 5 of the rotating bodies 2. This It allows to increase the speed of barking of the trunks.
  • the debarking device of the present invention may comprise a pre-cutting apparatus 7 at the entrance thereof. Said apparatus 7 may consist of one or more rollers that rotate along an axis 8 perpendicular to the direction of travel of the logs and that make a longitudinal cut in the bark, guiding said trunks into the device and arranging them on the rotating bodies 2 simultaneously. In this way, the rotating bodies 2 can bark the logs more quickly and efficiently.
  • the pre-cutting device 7 may be operated by a transmission mechanism or by an independent motor.
  • the debarking device of the present invention will comprise at least one fixed stop 9 located on the rotating bodies 2.
  • two bridges 9 with the form of a bridge are included, which prevent the logs being cut from barking. and fall off the device.
  • the device comprises a gearbox 10 of various transmission ratios to adapt the rotational speed of each rotating body 2 to the type of wood to be barked and to the state thereof.
  • a chain drive mechanism 11 is arranged connected to the front axle 4 of one of the rotating bodies 2.
  • a gearbox 12 is also provided with an outlet at ninety degrees to drive the axis 8 of the apparatus. pre-cut 7.
  • a drive shaft 13 associated with the gearbox 10 drives an inverter box 14, which in turn drives a chain 15 connected to the shaft 4 of the other rotating body 2 and which rotates it in the opposite direction.
  • a cardan 16 transmits the movement of a tractor (not shown) to the gearbox 10.
  • the type of drives and the type of force used to operate the debarking device may be any known in the art, for example, force transmission may be carried out mechanically, hydraulically, electrically, etc.
  • the debarking device of the present invention can comprise a set of wheels 17 to facilitate its transport, it can be towed by means of a support 18 for attachment to a tractor, from which it can obtain the necessary force to work .
  • the device of the present invention has great simplicity, with few moving parts and small size. In this way, said device is ideal to be transported to the location where it is necessary to bark the trees.
  • the device of the present invention can work longitudinally with respect to a tractor that tows it.
  • the configuration of the rotating bodies 2 with the helical protuberances 5 allows barking logs with irregular shapes and different sizes.
  • the device of the present invention is especially useful in wood pulp pulp crops, in which logs of very different diameters and with crooked shapes are used.
  • the gearbox 10 allows the speed of rotation of each rotating body 2 to be adapted to the type of wood to be barked, so that the device of the present invention can be used in a wide variety of situations and with high performance.
  • the debarking device of the present invention in addition to being movable by a tractor unit, can also be part of an independent mobile machine.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Handcart (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)

Abstract

L'invention concerne un dispositif d'écorçage qui comprend au moins deux éléments rotatifs (2) adjacents conçus pour écorcer des troncs avec lesquels lesdits éléments rotatifs sont mis en contact. Chacun des éléments rotatifs (2) comprend un corps allongé dont l'axe de rotation (3) est sensiblement parallèle à l'axe longitudinal des troncs au moment de leur écorçage, et chacun desdits éléments rotatifs (2) comprend au moins une protubérance hélicoïdale (5) sur sa surface extérieure qui s'étend dans le sens longitudinal dudit élément rotatif (2).
PCT/IB2009/051749 2008-05-08 2009-04-29 Dispositif d'écorçage Ceased WO2009136323A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
UYUY31.074P 2008-05-08
UY31074A UY31074A1 (es) 2008-05-08 2008-05-08 Maquina descortezadora

Publications (1)

Publication Number Publication Date
WO2009136323A1 true WO2009136323A1 (fr) 2009-11-12

Family

ID=39627449

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/IB2009/051749 Ceased WO2009136323A1 (fr) 2008-05-08 2009-04-29 Dispositif d'écorçage

Country Status (2)

Country Link
UY (1) UY31074A1 (fr)
WO (1) WO2009136323A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104890076A (zh) * 2015-06-25 2015-09-09 吉首大学 直筒螺旋桨式桑枝去皮装置

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588903A (en) * 1947-01-23 1952-03-11 Alfred A Dorman Log peeling and shaping apparatus
US2726691A (en) * 1953-09-09 1955-12-13 J R Gordon & Co Ltd Debarking machine having underlying bark-stripping helical rollers and an overlying adjustable pressure roller
US2729251A (en) * 1954-09-20 1956-01-03 Kenneth W Brown Hollow-head type log peeler having concentrically arranged and individually rotatable helical blades
US2934112A (en) * 1955-05-17 1960-04-26 Valo Veikko Lennart Debarking machine having log rotating and advancing wheels and a screwshaped cutter
SU424711A1 (ru) * 1972-02-15 1974-04-25 В. Ф. Шалавин , М. А. Мизев Устройство для обрезки сучьев с поваленных деревьев
US4685498A (en) * 1984-02-08 1987-08-11 Fuji Kogyo K.K. Barking machine
US5472027A (en) * 1994-12-02 1995-12-05 Nicholson Manufacturing Company Log bark slitting machine
US20030159760A1 (en) * 2002-02-25 2003-08-28 Peetso Victor Batch rotary debarker

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2588903A (en) * 1947-01-23 1952-03-11 Alfred A Dorman Log peeling and shaping apparatus
US2726691A (en) * 1953-09-09 1955-12-13 J R Gordon & Co Ltd Debarking machine having underlying bark-stripping helical rollers and an overlying adjustable pressure roller
US2729251A (en) * 1954-09-20 1956-01-03 Kenneth W Brown Hollow-head type log peeler having concentrically arranged and individually rotatable helical blades
US2934112A (en) * 1955-05-17 1960-04-26 Valo Veikko Lennart Debarking machine having log rotating and advancing wheels and a screwshaped cutter
SU424711A1 (ru) * 1972-02-15 1974-04-25 В. Ф. Шалавин , М. А. Мизев Устройство для обрезки сучьев с поваленных деревьев
US4685498A (en) * 1984-02-08 1987-08-11 Fuji Kogyo K.K. Barking machine
US5472027A (en) * 1994-12-02 1995-12-05 Nicholson Manufacturing Company Log bark slitting machine
US20030159760A1 (en) * 2002-02-25 2003-08-28 Peetso Victor Batch rotary debarker

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104890076A (zh) * 2015-06-25 2015-09-09 吉首大学 直筒螺旋桨式桑枝去皮装置

Also Published As

Publication number Publication date
UY31074A1 (es) 2008-07-03

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