EP0424357A1 - Dispositif pour fendre des pièces de bois - Google Patents

Dispositif pour fendre des pièces de bois Download PDF

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Publication number
EP0424357A1
EP0424357A1 EP90890284A EP90890284A EP0424357A1 EP 0424357 A1 EP0424357 A1 EP 0424357A1 EP 90890284 A EP90890284 A EP 90890284A EP 90890284 A EP90890284 A EP 90890284A EP 0424357 A1 EP0424357 A1 EP 0424357A1
Authority
EP
European Patent Office
Prior art keywords
tube
wood
splitting tool
connecting part
wood splitting
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Withdrawn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
EP90890284A
Other languages
German (de)
English (en)
Inventor
Heinz Peter Posch
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.)
Posch Landmaschinenbau Gesmbh
Original Assignee
Posch Landmaschinenbau Gesmbh
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 Posch Landmaschinenbau Gesmbh filed Critical Posch Landmaschinenbau Gesmbh
Publication of EP0424357A1 publication Critical patent/EP0424357A1/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Withdrawn legal-status Critical Current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
    • B27L7/00—Arrangements for splitting wood

Definitions

  • the invention relates to a device for splitting wood, with a base serving as a support for the wood to be split, on which the fixed part, in particular the cylinder, of a double-acting hydraulic piston-cylinder unit with a vertical axis is attached, the movable Part, in particular the piston rod, carries at its upper end a downwardly projecting connecting part, in particular in the form of a tube with a vertical axis, to which a wooden splitting tool, in particular a knife or a splitting wedge, is fastened in the region of its lower end, the connecting part in Direction of a pipe surrounding the fixed part of the piston-cylinder unit is guided to be longitudinally displaceable.
  • the invention has for its object to avoid these disadvantages and to improve a device for splitting wood of the type described in such a way that while maintaining the splitting possibility for long blocks of wood and the low overall height increases the rigidity of the construction and the device is better at preventing intrusion Wood particles are protected.
  • the invention solves this problem in that the tube surrounding the fixed part of the piston-cylinder unit surrounds the connecting part and has a longitudinal slot which extends over the stroke length and through which the wood splitting tool or an arm securing the connecting part extends. In this way, the rigidity of the construction is increased compared to the known construction described last, because the pipe surrounding the connecting part - assuming comparable sizes - can have a larger diameter than the upright pipe of the known construction.
  • the tube is provided on both sides of the slot with outwardly pointing webs which guide the wood splitting tool or the arm carrying it.
  • the outer tube can be used in any way be rigidly connected to the base.
  • a particularly rigid support is obtained in the context of the invention if the tube is connected to the base by means of protruding support plates. With minimal means, it is possible to achieve a reliable absorption of the bending moments resulting from the splitting of wood.
  • the arrangement is made in accordance with a preferred embodiment of the invention in such a way that the wood splitting tool lies in its lowest limit position outside the area of the support plates.
  • These support plates can also serve other purposes:
  • support plates arranged on the side of the pipe facing away from the wood splitting tool can carry a motor and a hydraulic pump for the piston-cylinder unit and preferably also a bearing for wheels for moving the device. This is not possible with the known construction, since there the space below the lower end of the outer tube must be kept free for the lowering thereof.
  • a particularly robust construction advantageously results within the scope of the invention if the wood splitting tool or its arm are fastened to a reinforcing part which is fastened to the circumference of the connecting part designed as a tube.
  • This reinforcing part makes the pipe forming the connecting part more rigid in the area of the attachment of the wood splitting tool or the arm carrying it.
  • a particularly favorable construction results according to the invention when the reinforcing part is C-shaped in horizontal section and lies flat on the connecting part designed as a square tube on three sides thereof.
  • Such a construction can be perfected within the scope of the invention in that the reinforcing part and / or the connecting part are guided with flat guide members on the inner jacket of the tube, so that the inner tube does not have to be guided over its entire length on the inner jacket of the outer tube.
  • FIG. 1 shows the device in a side view and in the highest possible position of the wood splitting tool
  • FIG. 2 shows the device, also in a side view, in the lowest possible limit position of the wood splitting tool
  • 3 is a section along the line III-III of FIG. 1, the components located at the lower end of the device being omitted for greater clarity.
  • the device has a base 1 formed by a steel plate, which serves as a support for the wood to be split.
  • a base 1 formed by a steel plate, which serves as a support for the wood to be split.
  • an upwardly projecting tube 2 is fastened, on the inner jacket 3 (FIG. 3) of which another tube 5, which forms a connecting part 4 between a piston rod 7 of a double-acting hydraulic piston-cylinder unit 8 and a wood splitting tool 17, is telescopically longitudinally displaceable is.
  • the two tubes 2.5 are designed as square tubes.
  • the tube 2 is open at its upper end, but the tube 5 is closed by a transverse wall 6, which serves as a support for the upper end of the piston rod 7 of the hydraulic piston-cylinder unit 8, the cylinder 9 of which is stationary in the interior of the outer tube 2 arranged and conveniently attached to the base 1 with its lower end.
  • the piston rod 7 can be moved quickly in both directions.
  • One of the connections 10 of the cylinder 9 designed in this way is shown in FIG. 1 and connected to a control unit 11 for the supply of the hydraulic fluid to each of the two ends of the cylinder 9.
  • the control unit 11 is supplied with pressure oil by a hydraulic pump 12, which is driven by a drive 13 in the form of an electric motor 14. Instead, a PTO drive or a drive from the hydraulic system of a tractor can also be used.
  • the control device 11 can be operated by a control lever 15 which runs forward in the area of the base 1 and can be operated by the operator with his foot.
  • the pipe 2 has a longitudinal slot 16 (FIG. 3) through which the wood splitting tool 17 projects in the form of a riving knife 18, which wood splitting tool 17 is fastened to the inner pipe 5 in the interior of the pipe 2.
  • the wood splitting tool 17 is welded to a reinforcing part 19, which has a C-shape in cross section (FIG. 3) and encompasses the tube 5 forming the connecting part 4 on both sides with its two legs.
  • the reinforcement part 19 is rigidly connected to this pipe 5, in particular welded, and in this way forms a reinforcement of the pipe 5 in the area in which the forces from the wood splitting tool 17 are transmitted to the pipe 5 during the wood splitting.
  • two support plates 20 form a bearing for two lateral, rubber-tired wheels 21, with which the device, after moving in the direction of the arrow 22 ( Fig.2) has been tilted, can be moved.
  • a handle 23 is welded to the upper end of the outer tube 2. The tilt is safe because the overall center of gravity of the device is very low. In order to secure this low position of the center of gravity, it is expedient to make the cylinder 9 of the piston-cylinder unit 8 stationary and to make the piston rod 7 extendable, although in principle the reverse arrangement would also be conceivable.
  • the inner square tube 5 surrounds the cylinder 9 so that the two standing axes of these components are concentric. However, the inner tube 5 lies somewhat eccentrically in the outer square tube 2 (FIG. 3), due to the interposed reinforcing part 19, which does not surround the side of the tube 5 facing away from the wood splitting tool 17. This has proven to be particularly favorable for structural reasons.
  • the longitudinal slot 16 of the outer tube 2 extends over the entire stroke of the tool 17 and is accompanied on both sides by outwardly pointing webs 24 which guide the tool 17 and help to better absorb forces acting laterally on the tool 17.
  • the tool 17 does not have to be connected directly to the tube 5 or the reinforcing part 19. Rather, the tool 17, in particular if it is formed by a cross wedge, can also sit on an arm which extends essentially horizontally through the slot 16 and is fastened to the tube 5 or to the reinforcing part 19.
  • the piston rod 7 is extended so far that it is too splitting piece of wood can be easily placed under the riving knife 18 on the base 1.
  • this extension movement of the piston rod 7 it takes the inner tube 5 and the tool 17 fastened by means of the reinforcing part 19 at the lower end of the tube 5 until the desired height of the tool 17 is reached.
  • the control unit 11 is switched over so that the hydraulic cylinder 9 retracts its piston rod 7.
  • the riving knife 18 comes to rest on the upper end face of the block of wood to be split and splits it.
  • the tool 17 can be lowered to the lowest limit position shown in FIG. 2 in order to safely separate the two parts of the split block of wood.
  • the piston rod 7 is raised again and the processes described are repeated.
  • the total height of the device in the retracted state of the piston rod 7 is not significantly greater than the length of the outer tube 2, especially if the handle 23 is designed to be pivotable.
  • the device can therefore be moved easily and accommodated in a space-saving manner.

Landscapes

  • Life Sciences & Earth Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Wood Science & Technology (AREA)
  • Forests & Forestry (AREA)
  • Debarking, Splitting, And Disintegration Of Timber (AREA)
EP90890284A 1989-10-20 1990-10-18 Dispositif pour fendre des pièces de bois Withdrawn EP0424357A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
AT241389 1989-10-20
AT2413/89 1989-10-20

Publications (1)

Publication Number Publication Date
EP0424357A1 true EP0424357A1 (fr) 1991-04-24

Family

ID=3533902

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90890284A Withdrawn EP0424357A1 (fr) 1989-10-20 1990-10-18 Dispositif pour fendre des pièces de bois

Country Status (1)

Country Link
EP (1) EP0424357A1 (fr)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624441A1 (fr) * 1993-05-11 1994-11-17 REINHOLD HESS GmbH & Co. KG. MASCHINENBAU Presse à cadre
US5727457A (en) * 1995-10-05 1998-03-17 Prensas Ramarch, S.L. Hydraulic press for forming door frames and panels or the like
EP3995276A1 (fr) * 2020-11-02 2022-05-11 Scheppach GmbH Coin à refendre le bois autoportant
CN114474273A (zh) * 2022-03-09 2022-05-13 侯建奎 一种竹条切割设备

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2851072A (en) * 1956-07-16 1958-09-09 Harry H Gerjets Wood splitting machine
US3077214A (en) * 1959-08-27 1963-02-12 Waco Aircraft Co Log splitter
US3319675A (en) * 1965-04-23 1967-05-16 Sr Marcus J Bles Tractor carried log splitters
US4366848A (en) * 1981-01-26 1983-01-04 Gavinski Frank R Log splitter
US4411298A (en) * 1981-10-09 1983-10-25 J. I. Case Company Log splitter mounting arrangement
US4470441A (en) * 1983-08-26 1984-09-11 Ingersoll Equipment Co., Inc. Hydraulic wood splitter
US4679607A (en) * 1986-04-04 1987-07-14 Terry Bradley Log splitter
US4782870A (en) * 1987-10-30 1988-11-08 Dennis Duerr Portable wood splitter

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2851072A (en) * 1956-07-16 1958-09-09 Harry H Gerjets Wood splitting machine
US3077214A (en) * 1959-08-27 1963-02-12 Waco Aircraft Co Log splitter
US3319675A (en) * 1965-04-23 1967-05-16 Sr Marcus J Bles Tractor carried log splitters
US4366848A (en) * 1981-01-26 1983-01-04 Gavinski Frank R Log splitter
US4411298A (en) * 1981-10-09 1983-10-25 J. I. Case Company Log splitter mounting arrangement
US4470441A (en) * 1983-08-26 1984-09-11 Ingersoll Equipment Co., Inc. Hydraulic wood splitter
US4679607A (en) * 1986-04-04 1987-07-14 Terry Bradley Log splitter
US4782870A (en) * 1987-10-30 1988-11-08 Dennis Duerr Portable wood splitter

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0624441A1 (fr) * 1993-05-11 1994-11-17 REINHOLD HESS GmbH & Co. KG. MASCHINENBAU Presse à cadre
US5727457A (en) * 1995-10-05 1998-03-17 Prensas Ramarch, S.L. Hydraulic press for forming door frames and panels or the like
EP3995276A1 (fr) * 2020-11-02 2022-05-11 Scheppach GmbH Coin à refendre le bois autoportant
CN114474273A (zh) * 2022-03-09 2022-05-13 侯建奎 一种竹条切割设备
CN114474273B (zh) * 2022-03-09 2022-12-13 温州甬泰竹业有限公司 一种竹条切割设备

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