WOOD SPLITTING DEVICE AND WOOD SPLITTING METHOD

Abstract

A wood splitting device includes a base formed as a base plate with a horizontally upwardly facing wood parking surface and a wood fixing arrangement fixed to the base for fixing a piece of wood disposed on the wood parking surface. The wood splitting includes a holder for holding a compressed-air-driven striking mechanism formed as a hand-held pneumatic hammer above the fixed piece. The pneumatic hammer has an upper-side handle, an actuator arrangement, and a tool carrier shaft, at the lower end of which a tool holder for receiving a splitting attachment is arranged. The holder is formed so that the pneumatic hammer is releasably attachable thereto. A wood splitting method includes disposing of a piece of wood to be split on a wood parking surface, fixing the disposed piece of wood, moving a striking mechanism into a working position, and operating and holding down the striking mechanism.

Claims

1. A wood splitting device for compressed-air-driven splitting of pieces of wood in the form of tree trunk disks into logs, the wood splitting device comprising: a base formed as a base plate with a horizontally upwardly facing wood parking surface; a wood fixing arrangement fixed to the base for fixing a piece of wood disposed on the wood parking surface; wherein: the wood splitting device for compressed air-driven splitting of the pieces of wood has a holder for holding a compressed-air-driven striking mechanism formed as a hand-held pneumatic hammer above the fixed piece of wood, the pneumatic hammer has an upper-side handle and actuator arrangement and a tool carrier shaft, at the lower end of which a tool holder for receiving a splitting attachment is arranged, and the holder is formed so that the pneumatic hammer is releasably attachable thereto.

2. The wood splitting device according to claim 1, wherein the holder is designed so that the pneumatic hammer is releasably attachable without tools.

3. The wood splitting device according to claim 1, further comprising a splitting attachment to be operated by the striking mechanism for splitting the fixed piece of wood, wherein the splitting attachment is configured to fasten to the striking mechanism and/or the holder, so that during wood splitting it has only a translational degree of freedom in the direction of striking, preferably in the vertical direction.

4. The wood splitting device according to claim 1, further comprising the compressed-air-driven striking mechanism, wherein the striking mechanism is configured as the pneumatic hammer, which, taken as a whole, is T-shaped.

5. The wood splitting device according to claim 4, wherein the pneumatic hammer, in addition to the splitting attachment, has at least one further tool attachment that fits its tool holder, in particular a shovel blade attachment.

6. The wood splitting device according to claim 1, wherein the holder has a carrier for the striking mechanism which is fastened to the base, in particular welded thereon.

7. The wood splitting device according to claim 6, wherein the carrier has a guide rail arrangement on which the striking mechanism is accommodated with freedom in the striking direction, preferably displaceable in the vertical direction and preferably in a fixable manner.

8. The wood splitting device according to claim 7, wherein a return spring is provided, which pretensions the hammer mechanism upwards against the striking direction.

9. The wood splitting device according to claim 7, wherein the guide rail arrangement is formed as a guide rod which preferably protrudes upwardly from the base against the striking direction and the holder comprises a carrier yoke which encloses the guide rod on several sides, preferably completely, to which the striking mechanism is attached or is at least attachable.

10. The wood splitting device according to claim 4, wherein the holder has a pipe clamp arrangement which can be brought from an open receiving position for attaching the pneumatic hammer on the holder into an operation position, in which it surrounds the tool carrier shaft preferably on a circular pipe section, preferably gripping said shaft.

11. The wood splitting device according to claim 10, wherein the pipe clamp arrangement is attached to the guide rod, preferably fastened to the carrier yoke.

12. The wood splitting device according to claim 1, wherein the wood fixing arrangement comprises two retaining arms especially provided with retaining claws, which are pivotably hinged on the base or the holder horizontally from a wood receiving position into a wood fixing position and back.

13. The wood splitting device according to claim 12, wherein the wood fixing arrangement comprises a tension spring pretensioning the two retaining arms in the wood fixing position.

14. The wood splitting device according to claim 12, wherein the two retaining arms can be locked in the wood receiving position.

15. A wood splitting method for compressed-air-driven splitting of pieces of wood in the form of tree trunk disks into logs, the method comprising: disposing a piece of wood to be split on a horizontally upwardly facing wood parking surface; fixing the disposed piece of wood there; moving a striking mechanism attached in a height-adjustable manner to a guide rail arrangement above the fixed piece of wood from a position spaced from the piece of wood into a working position in which a striking attachment of the striking mechanism is seated on the fixed piece of wood, and operating and holding down the striking mechanism, wherein the wood splitting method is performed with a wood splitting device according to claim 1.

Description

BRIEF DESCRIPTION OF THE DRAWINGS

[0023] The invention will now be described with reference to the drawings wherein:

[0024] FIG. 1 shows a perspective view of a multi-function pneumatic hammer for use with a wood splitting device according to an exemplary embodiment of the invention;

[0025] FIG. 2 shows a perspective view of the wood splitting device from the front; and

[0026] FIG. 3 shows a perspective view of the wood splitting device from the back.

DESCRIPTION OF EXEMPLARY EMBODIMENTS

[0027] Reference is made first to FIG. 1, which shows a generally T-shaped pneumatic hammer designated by reference numeral 1, which has at its lower end a tool receptacle 2 configured as a hexagon-shaped receptacle with additional thread 13, to which different tools can be attached, and at its upper end a handle arrangement 14 which can be gripped with both hands and which is designed as a crossbar. Via a pull lever 15 configured as actuating arrangement, compressed-air supply on the handle side can be operated, via which the compressed air is conducted through internal lines to a striking mechanism unit arranged in the tool holder shaft leading from the handle arrangement 14 downwardly to the tool holder 2. The tool carrier shaft in this case has in its lower third a guide section 12 with an approximately circular outer cross-section, on which the pneumatic hammer 1 can be accommodated for wood splitting in a guided manner in a holder, as shown in the following FIGS. 2 and 3. Therein, the internal striking mechanism unit can be accommodated in the region of the slightly projecting guide section 12 in order to act from there on the lowest section of the tool shaft and thereby move it.

[0028] FIGS. 2 and 3 show the pneumatic hammer 1 in use on a wood splitting device. The wood splitting device in this case has a base formed as a base plate 4, to which a vertically upwardly projecting guide rod 7 in square shape is welded. At the bottom of the guide rod 7, two horizontally projecting fastening tabs 13 (FIG. 3) are welded, to each of which a retaining arm 5 is hinged. The two retaining arms 5 are each provided with retaining claws 11 and together with a tension spring 6 form a wood fixing arrangement for fixing a piece of wood 10 parked on the wood parking surface of the base plate 4, said piece of wood being provided here in the form of a tree trunk disk.

[0029] A support yoke 8 surrounding the guide rod 7 on all sides is accommodated on the guide rod 7, to which a pipe clamp arrangement indicated with reference numeral 9 is attached via a bar, which is not designated. The pipe clamp arrangement 9 surrounds the tool carrier shaft of the pneumatic hammer 1 in its guide section 12, as indicated by dashed lines in FIG. 2.

[0030] The guide rod 7, the support yoke 8 and the pipe clamp arrangement 9 thus together form a holder for holding the pneumatic hammer 1 above the fixed piece of wood 10. It would be conceivable to form the holder separately from the base, i.e., the base plate 4 with the wood fixing arrangement attached thereto, e.g., for attachment to a wall. In the exemplary embodiment shown, however, the guide rod 7 forms a carrier fixed to the bottom plate 4.

[0031] Deviations from the illustrated embodiment are possible without contradicting the spirit of the invention.

[0032] Thus, it would be conceivable, for example, to form the pipe clamp arrangement 9 by a plurality of pipe clamps encompassing the guide section 12 at different heights, whereby a more secure guidance of the pneumatic hammers 1 in the vertical direction would be ensured. It would also be conceivable to provide the pipe clamp arrangement 9 with wider pipe clamps. Furthermore, locking screws could be provided for fixing the support yoke 8 at a certain height on the guide rod and/or corresponding locking screws for fixing the pneumatic hammer 1 to the pipe clamp arrangement. 9

[0033] It is understood that the foregoing description is that of the exemplary embodiments of the invention and that various changes and modifications may be made thereto without departing from the spirit and scope of the invention as defined in the appended claims.