EP2241424A1 - Machine à hacher du bois - Google Patents

Machine à hacher du bois Download PDF

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Publication number
EP2241424A1
EP2241424A1 EP10003642A EP10003642A EP2241424A1 EP 2241424 A1 EP2241424 A1 EP 2241424A1 EP 10003642 A EP10003642 A EP 10003642A EP 10003642 A EP10003642 A EP 10003642A EP 2241424 A1 EP2241424 A1 EP 2241424A1
Authority
EP
European Patent Office
Prior art keywords
feed
wood
devices
feed device
logs
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.)
Withdrawn
Application number
EP10003642A
Other languages
German (de)
English (en)
Inventor
Bengt Nilsson
Andreas Sartor
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.)
Bruks Klockner GmbH
Original Assignee
Bruks Klockner GmbH
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 Bruks Klockner GmbH filed Critical Bruks Klockner GmbH
Publication of EP2241424A1 publication Critical patent/EP2241424A1/fr
Withdrawn legal-status Critical Current

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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
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/002—Transporting devices for wood or chips
    • 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
    • B27L11/00—Manufacture of wood shavings, chips, powder, or the like; Tools therefor
    • B27L11/02—Manufacture of wood shavings, chips, powder, or the like; Tools therefor of wood shavings or the like

Definitions

  • the invention relates to a wood chipper, in particular a drum chopper with (a) a chopping device for chopping stems and (b) a feeding device which is designed for simultaneously feeding a first trunk having a first diameter and at least one second trunk having a second diameter.
  • drum chippers are known and serve to chop up logs, so in particular roundwood to chips.
  • microchips are wood chips with a diameter of at most 10 millimeters.
  • a consistent chip size is an important quality criterion for wood chippers.
  • a Messerwellenenspaner which includes additional, the wood frontally detecting delivery units on the narrow sides of the shaft.
  • the woods are machined on their longitudinal sides, which is not possible with very long woods.
  • the invention has for its object to provide a wood chipper, in which the chip size varies less.
  • the invention solves the problem by a generic wood chipper having a feeder having a first feed device and at least a second feed device, wherein the second feed device is movable relative to the first feed device, so that by means of the first feed device, an advance of the first trunk and means the second feed device, a feed of the second trunk is adjustable.
  • An advantage of the invention is that the feed rates of both strains or in the general case of all strains can be set to a constant value. This in turn means that the size of the wood chips or wood chips can be adjusted with high accuracy. This results in a particularly uniform feed.
  • the self-retraction takes place when, as provided in a preferred embodiment, the chopping device is arranged relative to the feeding device, that the supplied logs are cut at a cutting angle of less than 90 ° degrees. In this case, each cutting operation results in a force that pulls the trunk closer to the chopping device.
  • the cutting angle is the angle between a longitudinal axis of the trunk and the movement trajectory of the hacker's knife.
  • the feed devices are designed so that each strain of at least one feed device is always tangible, so that its feed rate is adjustable to the desired feed rate. This leads to wood chips or wood chips of substantially constant size.
  • a chopping device for chopping stems is understood in particular as a chopper drum.
  • the chopping device may also be a chopping disk.
  • the feeding device is designed to feed at least two logs simultaneously
  • the feeding device is designed so that the logs can be fed in parallel.
  • Each trunk has a longitudinal axis and below the parallel Feeding means that two logs are fed so that their longitudinal axes are substantially parallel. That is, an angle between both longitudinal axes is, for example, less than 30 degrees.
  • the feeding device is designed, in particular, to convey the logs to the chopping device in the same feed direction.
  • the chopping device has a frame to which the feeding device (18) is attached.
  • the frame is understood in particular any passive device to which the feeder is attached.
  • the frame is designed such that it establishes a rigid connection between the chopping device and the feeding device.
  • the chopping device and the frame are separate components, which are mounted for example on a common foundation.
  • the feeding device comprises a plurality of feeding devices.
  • Well suited are four, five, six, seven, eight or nine feeders.
  • the number of feed devices is not limited in principle, more than nine feed devices are generally not advantageous and lead to an increased design effort.
  • the first feed device preferably comprises a first, closed feed chain and the second feed device comprises a second closed feed chain. If several feed devices are present, preferably each of the devices comprises at least one closed feed chain. This closed feed chain runs around and may include hooks, claws, spikes or the like, to ensure a particularly firm grip in the place.
  • the feed devices are designed such that each log communicates with at least one feed chain and is held by its gripper elements in such a way that the feed rate of the log onto the chopping device corresponds to a chain feed speed of the feed chain.
  • a feed speed control device By means of a feed speed control device, the feed rate of all the feed chains can then be adjusted so that wood chips of a predetermined size are obtained.
  • the feed devices are pivotally mounted about a respective pivot axis, wherein it is particularly advantageous if all the feed devices are pivotally mounted about the same pivot axis.
  • the respective feed device is pivoted about the pivot axis until its feed chain is in contact with the respective trunk. This can be done purely passively by biasing the feed device onto the logs.
  • the pivot axis runs perpendicular to a plane in which the feed chain rotates.
  • the feed devices each comprise a drive pinion, wherein the centers of all pinion gears preferably coincide with the common pivot axis. This results in a structurally particularly simple construction.
  • the feeding device comprises a fixed-bed feed unit, in particular a roller bed, which lies opposite the feed devices.
  • the fixed-bed feed unit and the feeders are arranged so that the logs are transported with contact to the fixed-bed feed unit and the feeders to the chopping device.
  • the fixed-bed feed unit and the feeders are arranged to sandwich the logs between each other can pinch.
  • the logs are held from both sides and the feeders can be designed to exert a force on the logs so that they are clamped between the fixed-bed feed unit and the feed unit.
  • the fixed-bed feed units in particular the roller bed, have a drive which is connected to the feed speed conveyor, so that both have the same feed rate. This ensures that the logs regardless of their diameter from two sides, namely by the fixed-bed feed unit on the one hand and at least one of the feed device on the other hand gripped and promoted to the chopping device with exactly the desired feed rate.
  • a side wall adjoining both sides of the feed devices is provided, which has a distance from the respectively adjacent feed device, which is smaller than a width of the feed device.
  • Fig. 1 shows a wood chipper 10 according to the invention comprising a chopping device 12 in the form of a chopping drum.
  • the chopping device 12 is attached to a first frame 14.
  • the wood chipper 10 also comprises a feeding device 18 attached to a second frame 16.
  • the feeding device 18 in turn comprises a first feeding device 20.1, a second feeding device 20.2 and four further feeding devices 20.3 .... 20.6.
  • first feeding device 20.1, a second feeding device 20.2 and four further feeding devices 20.3 .... 20.6.
  • Each feed device 20 is pivotally mounted about a pivot axis S and comprises a respective feed chain 22.1 ... 22.6.
  • the feed chains 22 are driven by a respective pinion 24.1..., Wherein all the pinions are arranged on a drive shaft, which in turn are driven by a drive 26 in the form of a gear or an electric motor.
  • the feed devices 20 opposite a fixed bed feed unit 28 is arranged in the form of a roll bed, which has a plurality of corrugating rollers 30.1, 30.2, 30.3, which are driven by a common drive 32 in the form of an electric motor.
  • the drive 26 and the drive 32 are designed such that they drive the feed chains 22 on the one hand and the corrugating rollers 30 on the other hand at a same peripheral speed, which correspond to a feed rate v f of the logs.
  • each trunk is detected on the one hand by the corrugating rollers 30 of the fixed bed feed unit 28 and at least one feed chain 22 of the feed devices 20 and clamped between the two.
  • the corrugating rollers 30 and the feed chains 22 the logs are conveyed to the chopping device 12 at the feed rate v f .
  • Fig. 1 schematically shows the case that a centrally disposed trunk has a larger diameter than a second, laterally adjacent arranged trunk.
  • the feed device 20.3 is pivoted more strongly relative to the pivot axis S than a second feed device, namely in the present case the feed device 20.6. Both strains are therefore reliably detected from at least one feeding device, so that they move with the same feed speed v f to the chopping device 12th
  • the chopping device 12 and the advancing device 20 are covered with respective covers 34 and 36, respectively, which prevent unauthorized access.
  • the remaining paneling is not shown.
  • the wood chipper 10 is shut down when one of the two covers is open.
  • FIG. 2 shows a view from above of the wood chipper 10, in the biasing devices 38.1, 38.2 ... 38.6 can be seen, the feed chains 22 in the direction of the in FIG. 2 invisible fixed-bed feed unit 28 and thus biased to the logs during operation. This means that the feed chains exert a force on the trunks.
  • FIG. 3 shows that the biasing means 38 respective hydraulic cylinders 40.1 ... 40.6, by means of which the respective feed chain 22 can be biased with a presettable force in the direction of the fixed-bed feed unit 28 to.
  • FIG. 3 also shows a first side wall 42 located in feeders to the left of the first feed device and preventing wedging of logs.
  • the feed chains 22 shown in the figures have not drawn driving claws, which can also be referred to as gripping elements or spikes.
  • Each feed device has a second sprocket receiving, which is arranged opposite the respective pinion 24 and is designed to be movable relative thereto. By spacing the sprocket mount from the sprocket, the chain can be brought to a given chain tension.
  • each feed device 20 can be pivoted away via the hydraulic cylinders 40, so that a distance between the respective feed device and the fixed-bed feed unit 28 can be increased. This is particularly advantageous when the wood chipper 10 is to be maintained.
  • the figures also show that between each two feed chains 22 is a distance d, which is smaller than a width B of a feed chain. In particular, the distance d is less than one fifth of the width B. This prevents that logs can become wedged.
  • the described wood chipper can be produced for the production of so-called microchips having a size of at most 10 mm.
  • This size is the maximum side length of a Hüllquaders to the generated wood chips, which is below 90% of the wood chips.

Landscapes

  • Engineering & Computer Science (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Mechanical Engineering (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
EP10003642A 2009-04-17 2010-04-01 Machine à hacher du bois Withdrawn EP2241424A1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE200910017525 DE102009017525B3 (de) 2009-04-17 2009-04-17 Holzhacker

Publications (1)

Publication Number Publication Date
EP2241424A1 true EP2241424A1 (fr) 2010-10-20

Family

ID=42543400

Family Applications (1)

Application Number Title Priority Date Filing Date
EP10003642A Withdrawn EP2241424A1 (fr) 2009-04-17 2010-04-01 Machine à hacher du bois

Country Status (2)

Country Link
EP (1) EP2241424A1 (fr)
DE (1) DE102009017525B3 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110815472A (zh) * 2019-11-23 2020-02-21 南平市延平秋丰机械有限责任公司 适用于切削厚块、薄片或条形木质物的组合型鼓式削片机

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1012061B (de) 1955-09-20 1957-07-11 Erwin Behr Fa Maschine zum Zerspanen von Holz
US3208488A (en) * 1959-09-08 1965-09-28 Kirsten Paul Arthur Cylinder flaker for the wood particle board industry
DE2855642A1 (de) * 1978-12-22 1980-07-03 Buerener Maschf Gmbh Vorrichtung zum befuellen mit holzmaterial
DE3018110A1 (de) 1980-05-12 1982-02-04 Maschinenfabrik Bezner Gmbh & Co Kg, 7980 Ravensburg Messerwellenspaner mit holzzufuhrschacht
US20030029518A1 (en) * 2000-11-15 2003-02-13 Donald Starr Method and apparatus for singulating, debarking, scanning and automatically sawing and sorting logs into lengths
DE202005004722U1 (de) 2005-03-21 2005-05-25 Hfhn Wood Engineering Gmbh Langholzbearbeitungsmaschine

Patent Citations (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1012061B (de) 1955-09-20 1957-07-11 Erwin Behr Fa Maschine zum Zerspanen von Holz
US3208488A (en) * 1959-09-08 1965-09-28 Kirsten Paul Arthur Cylinder flaker for the wood particle board industry
DE2855642A1 (de) * 1978-12-22 1980-07-03 Buerener Maschf Gmbh Vorrichtung zum befuellen mit holzmaterial
DE3018110A1 (de) 1980-05-12 1982-02-04 Maschinenfabrik Bezner Gmbh & Co Kg, 7980 Ravensburg Messerwellenspaner mit holzzufuhrschacht
DE3229627A1 (de) * 1980-05-12 1984-04-26 Reinhold W. Dr.-Ing. 5000 Köln Elsen Messerwellenzerspanungssystem
US20030029518A1 (en) * 2000-11-15 2003-02-13 Donald Starr Method and apparatus for singulating, debarking, scanning and automatically sawing and sorting logs into lengths
DE202005004722U1 (de) 2005-03-21 2005-05-25 Hfhn Wood Engineering Gmbh Langholzbearbeitungsmaschine

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110815472A (zh) * 2019-11-23 2020-02-21 南平市延平秋丰机械有限责任公司 适用于切削厚块、薄片或条形木质物的组合型鼓式削片机

Also Published As

Publication number Publication date
DE102009017525B3 (de) 2010-09-30

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