EP3012076A1 - Wood splitter - Google Patents

Abstract

In a device for splitting wood, with a housing provided on a frame (1) (3) for a piece of wood by a frame part (2) and against the longitudinal direction of the frame part (2) perpendicular direction, on the one hand in the longitudinal direction Frame part (2) movable and on the other stationary stationary stops (4, 5) is limited, wherein the stop (4) includes a splitting tool (6) and the movable stop (5) is drivable by means of a drive device which can be activated by means of an operating device , which requires a two-hand operation, high operating reliability is achieved by at least the operator side of the receiving area (3) is associated with a protective cover (13) attached to the frame (1), which can be raised and lowered and associated with a first operating hand Handle (15) provided flap (14) having a in the closed position a frame side attached, the drive means associated switch actuating actuating element (16) is provided, and that for activating the drive means another, remote from the handle (15), a second operating hand associated control element (20) is provided.

Description

The invention relates to a log splitter, in particular a reclining wood splitter, for splitting wood, with a provided on a frame receiving portion for a piece of wood projecting through a frame part and against it in the direction perpendicular to the longitudinal direction of the frame part, on the one hand in the longitudinal direction of the frame part movable and stationary trained attacks is limited, wherein one of the stops contains a splitting tool and the movable stop is driven by means of a drive device which can be activated by means of an operating device which requires a two-handed operation.

For example, from the EP 1 837 147 A1 known and common in practice arrangements of the type mentioned above, the receiving area to the operator side is open. If internal stresses are released in the piece of wood to be split during the splitting process, it may happen that a wooden part is blasted off to the side and can hit the operator standing next to the splitter due to the intended two-hand operation. The known arrangements are therefore in this respect not sure enough.

On this basis, it is therefore the object of the present invention to improve a splitter of the type mentioned above with simple and inexpensive means so that a comparatively high operator safety is achieved.

This object is achieved in that in a log splitter generic type at least the operator side of the receiving area a associated with the frame protective cover is assigned, which has a raised and lowered arranged, provided with a first operating hand handle provided flap which is provided with a in the closed position of the flap a frame side mounted, the drive device associated switch actuated actuator, and that Activation of the drive device is another, remote from the handle, a second operating hand associated control element is provided.

The user-provided protective cover ensures that an operator operating the splitter can not be hit by wood parts blown off in their direction. The use of a hinged flap ensures advantageously a simple and obvious usability. At the same time it is ensured that the still provided two-hand operation in the form of manual operation of the flap, which consumes a first operating hand, is integrated in the two-hand operation, which ensures a comparatively simple overall construction and yet high security.

Advantageous embodiments and expedient developments of the higher-level measures are specified in the subclaims.

Thus, the protective cover may advantageously be at least partially perforated, preferably formed from a perforated plate. Despite the guaranteed protection, the perforation makes it possible to observe the cleavage process, which has an advantageous effect on operating convenience.

Another, particularly preferable embodiment of the parent measures may consist in that the protective cover is designed as a housing having a preferably attached to the receiving area limiting frame part rear wall and the flap, which is pivotally mounted in the region of the frame part distant region of the rear wall and a the frame part opposite, adjoining the rear wall top wall and a subsequent thereto, the rear wall opposite the front wall, on which the handle and the switch associated with the actuating element are mounted. The complete enclosure of the receiving area during the operation results in a particularly high protection against blasted wood parts in each direction. The formation of the protective cover in the form of a stationary rear wall and with respect to this pivotally arranged flap allows advantageously a simple and inexpensive construction with high stability.

In a further development of the above measures, the rear wall and the front wall can be provided with opposite, their distance from the receiving area limiting frame part bridging edge strips. In this way it is ensured that the housing as a whole can have a comparatively large clear width, which makes it possible to machine pieces of wood with a comparatively large diameter, and that nevertheless a complete partitioning of the receiving area is also achieved downwards.

A further expedient measure may be that the enclosure in the region of its end remote from the stationary stop provided with a splitting tool can be closed by a front wall which is preferably attached to the flap, so that no wooden parts can be thrown freely backwards. At the opposite end of the enclosure is suitably open, so that the billets produced by the splitting process can be pushed out of the chamber formed by the enclosure automatically. Advantageously, the housing can extend beyond the stationary, provided with a splitting tool stop to increase safety.

A further advantageous measure may consist in that the splitting tool is assigned an over the open end of the enclosure from this outstanding storage element, preferably in the form of a trough-shaped table or a channel-shaped chute, what a Uncontrolled crash of the gap prevented.

A further, particularly preferable development of the overarching measures may be that the protective cover from the back, i. the operator side opposite side of the frame, preferably of the receiving area delimiting frame part, projecting, hereby attachable carrier are assigned, are provided at the Gestellteilfernem end of the flap associated pivot bearing. When using an enclosure whose rear wall may be appropriate attached to a parallel leg of the appropriate angle-shaped support. The measures mentioned basically ensure that the protective cover according to the invention can be provided practically as an additional unit that can be easily attached to the frame of the splitter, which also allows easy retrofitting already existing splitter and / or a simple adaptation of the protective cover according to the invention to new splitter so that the relevant splitter can be delivered without major modification with and without protective cover.

In a further development of the higher-level measures, the flap can be associated with a spring arrangement supporting its opening movement, which is dimensioned such that, in addition to its weight, a further closing force is required for the complete closing of the flap. As a result, it is advantageously ensured that the switch, which is actuated only when the door is fully closed, when releasing the handle of the flap can not be operated automatically, but only by manually closing the flap against the spring action, which ensures high security.

Advantageously, the switch can have a microswitch arranged in a mounting box mounted on the frame, wherein the box has a slot and the actuating element attached to the flap has a tangentially projecting tab with respect to the pivot axis of the flap which can be inserted into the slot of the box assigned to the microswitch and Intervention with the micro switch can be brought. As a result, it is advantageously ensured that the switch is housed protected and so reliably prevents unintentional or unauthorized operation of the switch, which further increases security.

Suitably, the drive means may comprise an electric motor for driving a pump associated with a hydraulic cylinder, which is arranged downstream of a valve, wherein provided in the power supply of the electric motor by means of the flap switch and the valve by means of the further control element for the second operating hand forming hand lever is controllable , These measures result in a meaningful design of the desired two-handed operation.

Further advantageous embodiments and expedient developments of the parent measures will become apparent from the following description of an embodiment.

Figur 1

eine perspektivische Darstellung eines erfindungsgemäßen Holzspalters mit geöffnetem Aufnahmebereich von vorne links gesehen,

Figur 2

die Anordnung gemäß Figur 1 von vorne rechts gesehen und

Figur 3

die Anordnung gemäß Figuren 1 und 2 im geschlossenen Zustand.

In the drawing described below:

FIG. 1

a perspective view of a log splitter according to the invention with open receiving area seen from the front left,

FIG. 2

the arrangement according to FIG. 1 seen from the front right and

FIG. 3

the arrangement according to FIGS. 1 and 2 in the closed state.

Main field of application of the invention are so-called recumbent splitters in which the wood piece to be split is split with horizontal axis. But also an application in so-called Ständigeholzspaltern can come into question, in which the splitting wood piece is split with stationary axis.

In the the Figures 1-3 The underlying log splitter is a horizontal log splitter. This has a here designed as a mobile block machine frame 1 with an upper, arranged at a working height frame part in the form of a suitably formed by a hollow profile section longitudinal beam 2, which limits a receiving area 3 for a piece not shown here, to be split piece of wood down. The receiving area 3 is further limited by two in the direction perpendicular to the longitudinal direction of the longitudinal spar 2 upwardly upwardly directed stops 4, 5, one of which, here the stop 4, arranged stationary and provided with a splitting tool 6, here in the form of a riving knife, and of which the other stop, here the stopper 5, provided with a pressure plate 7 facing the splitting tool 6 and arranged movable in the longitudinal direction of the longitudinal spar 2 and by means of an associated drive means is displaceable.

Said drive means includes an electric motor 8 for driving an adjacent hydraulic pump 9, through which a only in FIG. 2 partially visible, advantageously arranged within the longitudinal beam 2 hydraulic cylinder can be acted upon with pressure medium, which cooperates with the movable stop 5. In the example shown is how FIG. 2 shows, which led out of the longitudinal beam 2 piston rod of the hydraulic cylinder 10 is provided with a yoke 11, which is connected via the longitudinal spar 2 flanking tie rods 12 with the movable stopper 5.

An operator operating the wood splitter shown is standing in the transverse direction of the longitudinal spar 2 next to the wood splitter. The in the representations according to Figures 1-3 the viewer facing side of the log splitter is therefore the operator facing the operator side. In order to protect an operator from injury by unintentionally peeled-off wood parts during the splitting process, at least the operator side of the receiving area 3 is an in FIG. 3 assigned in function protective cover 13, which collects during the splitting operation in the direction of the operator thrown off wooden parts. The protective cover 13, in which it is in simple cases can be a simple protective shield, is attached to the machine frame 1, here on the receiving space 3 downwardly limiting frame part forming longitudinal beam 2 and contains, as shown in FIGS. 1 and 2 can be clearly seen, a raised and lowered arranged, here pivotally mounted flap 14 which is provided with a handle 15 for manual lifting and lowering.

In the power supply of the motor 8, a switch is arranged, which is expediently actuated by means of the flap 14. For this purpose, the flap 14 has an actuating element 16 provided in the region of its lower edge, which, when the flap 14 is lowered, ie in the FIG. 3 underlying working position, comes to engage with said switch. This may conveniently be a micro-switch, which is protected and so removed from unauthorized operation in a mounted on the machine frame 1, suitably mounted on the longitudinal spar 2 box 17. This is provided with a microswitch accommodated therein micro slot 18 through which the microswitch is actuated by means of the flap side mounted actuator 16. The actuator 16 is provided for this purpose with respect to the pivot axis of the flap 14 tangentially in the closing direction of the flap 14 projecting tab 19 which retracts when closing the flap in the slot 18 and the microswitch located behind it operates as soon as the flap 14 is closed, ie in their lower end position is.

By the operation of the flap 14 by means of the handle 15, a first operating hand is occupied. In order to achieve a two-handed operation, the second operating hand is assigned to another, manually operable Bedienüngselement 20 remote from the handle 15, which serves to trigger an operation that must be triggered to effect a splitting process unconditionally. In the example shown, the control element 20 assigned to the second operating hand is a manually operable gearshift, suitably located in the region of the rear end side of the longitudinal spar 2 in the direction of displacement of the displaceable stop 5. a valve arranged in the pressure medium line leading from the pump 9 to the hydraulic cylinder 10 can be brought into a passage position and vice versa. That is, only when the control element 20 forming the shift lever is actuated, the hydraulic cylinder 10 is subjected to pressure medium and thus the movable stop 5 is moved. The said valve can be designed so that with the aid of the operating element 20, for example by up or down pivoting a forward or backward movement of the stopper 5 can be initiated, and the valve is closed in a middle position of the operating element. The fact that the operation of the flap 14 is included in the two-handed operation for actuating the movable stop 5, results in a particularly simple and obvious operation.

In the example shown, the receiving area 3 associated protective cover 13 is formed as a housing, through which, as from Fig. 3 it can be seen that a receiving area 3 is formed during a cleaving process all around limiting chamber. Said housing has a rear wall 21 facing away from the operator side, at the upper edge remote from the longitudinal spar 2, the flap 14 adjoins a top wall 21 opposite the longitudinal spar 2 in the working position, to which a rear wall in FIG the working position opposite front wall 23 connects, to which the handle 15 and the actuator 16 are mounted. The chamber, which is open to the enclosure, thus appears as a tunnel with an approximately rectangular cross-section.

The above-outlined enclosure is practically designed as an additional unit, which can be optionally attached to the machine frame 1. For this purpose, in the example shown on the machine frame 1, suitably on the side facing away from the operator side of the longitudinal beam 2 attachable, angular support 24 are provided. It is expedient to provide a plurality of carriers 24 distributed over the length of the longitudinal spar 2. As a rule, two supports 24 arranged in the region of the ends of the longitudinal spar 2 are sufficient. These are designed and attached to the longitudinal spar 2 in such a way that the receiving space 3 give laterally flanking, standing leg, where the rear wall 21 may be attached and at the upper end of the flap 14 may be stored, as in the Figures 1-3 Is indicated by bearing pins or bearing bores 25.

The flap 14 is as best as possible Fig. 2 can be seen, provided with the top wall 22 and front wall 23, the carriers 24 associated ribs 26, whose remote from the front wall 23 ends overlap with the longitudinal beam 2 remote from the ends of the attached thereto carrier 24 and are mounted thereon. For this purpose, mutually aligned bearing bores are provided, through which bearing pins are performed.

The walls of the protective cover, at least the top wall 22 and the front wall 23 of the flap 14 are expediently made of a perforated plate so that perforations formed by the holes result, which allow observation of the splitting operation from the outside when the flap is closed. In the example shown, the rear wall 21 is formed as a perforated plate. The said perforations not only allow observation of the cleavage process from the outside, but also advantageously produce a desired weight saving, which facilitates the attachability of the protective cover according to the invention to the machine frame 1.

In order to process comparatively thick pieces of wood unhindered and to be able to cover with the help of the enclosure, the chamber bounded by the enclosure has a comparatively large, the width of the receiving area 3 downwardly limiting longitudinal beam 2 exceeding clear width. The rear wall 21 and the front wall 23 are therefore comparatively far away from the longitudinal spar 2 when the flap 14 is closed. In order to close the gap thus formed, the rear wall 21 and the front wall 23 in the region of their respective lower edge with striving strickenden, strip-shaped Wandabwinklungen 27 are provided, the distance between the rear wall 21 and the longitudinal spar 2 and the flap closed and the distance between the front wall 23 and the Bridge longitudinal spar 2.

The chamber formed by the enclosure is closed during the splitting operation also at the rear in the feed direction of the displaceable stop 5 end face by an associated end wall 28. The end wall 28 is suitably attached to the flap 14 in the example shown and formed as infill of the enclosed by the top wall 22 and the front wall 23 corner, which can cause a stiffening of the flap 14.

The front end of the housing opposite the end wall 28 is open, so that the material to be split, i. the billets produced by the splitting process can be removed or ejected. Expediently, the housing extends in the region of its open end beyond the stationary stop 4 provided with a splitting tool 6. This supernatant can expediently about half of the max. Length of a fissile piece of wood, i. about half of the stroke of the movable stop 5 correspond.

Appropriately, the splitting tool 6 downstream, provided on the open end of the housing from this outstanding storage element 29, which may be formed as trough-shaped storage table or chute, so that the reaching here Spaltgut can either be removed manually or is dropped off in an orderly manner. The storage element 29 is, as best of Fig. 1 can be seen, above the tie rods 12 attached to the longitudinal spar 2. In Fig. 2 the storage element is indicated for simplicity of illustration only by broken lines.

To facilitate the operability and increase the safety of one of the liftable and lowerable flap 14 is assigned, in the FIGS. 1 and 3 shown spring assembly 30 is provided which supports the lifting of the flap 14 and is tensioned when lowering the flap 14. Upon actuation of the flap 14, the spring force of the spring assembly 30 acts through the weight of the flap 14 counteracted gravitational force, whereby the operation is facilitated and at the same time an automatic, full closing of the flap 14 counteracted. The spring assembly 30 is expediently dimensioned so that when lowering the flap 14 shortly before reaching its lower end position, the weight of the flap 14 is compensated by the spring force, so that the flap 14 can not close automatically, but that the complete closing of the flap 14th in addition to the weight of a further closing force is required, which must be applied by acting on the handle 15 operating hand. This ensures that the switch associated with the engine 8 is actuated only when the operator deliberately closes the flap 14 so that the engine 14 can not start involuntarily.

Above, a preferred embodiment is described with reference to a reclined wood splitter. However, the idea on which the present invention is based can also be applied without difficulty to a vertical wood splitter. Again, it is advantageous if an operator standing in front of the splitter can not be hit by thrown off wooden parts.

Claims (10)

Wood splitter, in particular recumbent wood splitter, for splitting wood, with a receiving area (3) for a piece of wood provided by a frame part (2) and in a direction perpendicular to the longitudinal direction of the frame part (2), on the one hand in FIG The longitudinal direction of the frame part (2) movable and the other stationary stops (4, 5) is limited, wherein the one stop (4) includes a splitting tool (6) and the movable stop (5) is drivable by means of a drive means by means of an operating device can be activated, which requires a two-handed operation, characterized in that at least the operator side of the receiving area (3) on the frame (1) attached protective cover (13) is associated with a raised and lowered arranged, with a first operating hand associated handle ( 15) provided flap (14), the one with a in the closed position a frame side Reason, the drive device associated switch actuated actuating element (16) is provided, and that for activating the drive means, another, remote from the handle (15), a second operating hand associated control element (20) is provided. Wood splitter according to claim 1, characterized in that the protective cover (15) is at least partially perforated, preferably consists of a perforated plate. Wood splitter according to one of the preceding claims, characterized in that the protective cover (13) is designed as a housing, which has a preferably on the receiving area (3) associated frame part (2) attached to the rear wall (21) and the flap (14) in the Area of the frame part remote from the edge of the rear wall (21) is pivotally mounted and the frame part (2) opposite to the rear wall (21) adjoining top wall (22) and a subsequent thereto, the rear wall (21) opposite the front wall, at the Handle (15) and the actuating element (16) are mounted. Wood splitter according to claim 3, characterized in that the rear wall (21) and the front wall (23) with opposite, their distance from the frame part (2) bridging Randabwinklungen (27) are provided. Log splitter according to claim 3 or 4, characterized in that the enclosure forming the protective cover (13) is closable in the region of its end remote from the stationary stop (5) by an end wall preferably attached to the flap (14) and open at the opposite end, which projects beyond the stationary stop (4) provided with a splitting tool (6). Wood splitter according to one of claims 3-5, characterized in that the stationary, provided with a splitting tool (6) stop (4) is associated with an open end of the housing from this outstanding storage element (29). Lying-wood splitter according to one of the preceding claims, characterized in that the protective cover (13) protrudes from the side facing away from the operator side of the frame (1), preferably of the receiving portion (3) Gestelillteils (2), attachable thereto carrier (24) are associated, at the end remote from the frame of the flap (14) associated bearing (25) are provided and that the flap (14) preferably with the carriers (24) corresponding ribs (26) is provided with their frame part remote end of the respective associated carrier (24) facing ends on each associated carrier (24) are mounted. Device according to one of the preceding claims, characterized in that the flap (14) is associated with an opening movement supporting spring assembly (30) which is dimensioned so that the complete closing of the flap (14) in addition to its weight, a further closing force is required , Wood splitter according to one of the preceding claims, characterized in that the drive device comprises an electric motor (8) for driving a hydraulic cylinder (10) associated pump, which is arranged downstream of a valve and that in the power supply of the electric motor (8) by means of the flap (14) provided actuatable switch and the valve by means of a further operating element (20) forming the hand lever is controllable. Wood splitter according to one of the preceding claims, characterized in that the switch actuable by means of the flap (14) is constructed as a microswitch housed in a box (17) attached to the frame (1) and in that the actuating element (16) attached to the flap (14) is provided ) has a relative to the pivot axis of the flap (14) tangentially projecting tab (19), which via a microswitch associated slot (18) of the box (17) can be inserted and brought into engagement with the microswitch.

Images