JPH0248401B2 - - Google Patents

Description

[Detailed description of the invention] Industrial applications This invention relates to a wood splitter.

Conventional technology In the past, firewood was split with an ax, as is well known.
Recently, mechanization has been proposed.

The log splitting machine described in Japanese Patent Application Laid-Open No. 57-178802 is equipped with a ram member and a wedge, and is configured to push the log forward by the ram member and press it against the wedge. This ram member comes into contact with one end surface of the log to support the log.

The log splitting device described in U.S. Pat. No. 3,596,691 includes a blade having a stop and a removable knife edge. The stop has a flat plate shape, and the knife edge has a straight cutting edge.

Problems to be Solved by the Invention Chopping firewood with an ax was time-consuming, labor-intensive, and difficult work.

In particular, logs and logs with poor grain and many knots are difficult to split with an ax, so until now they were left unchopped.

Additionally, the conventional log splitting device described above is not equipped with an acutely protruding receiving claw, and therefore, if one end of the log is sloped, the log may slip and fall when attempting to split it. It was dangerous.
Similarly, when splitting logs, there is a risk that the logs will bounce sideways or upwards. Furthermore, since the tip of the wedge is on a straight line, the entire tip of the wedge hits the end face of the log at the same time when the log is divided. For this reason, it is not possible to concentrate force on a specific part of the wedge tip. Since the entire wedge tip contacts the log at once, the cutting is poor and requires a large amount of power to cut. This is especially a problem when splitting hard-to-split logs such as logs with poor grain and many knots, or logs that are hard to break. Moreover, devices with high power must be large in size, making it difficult to move the entire device. This limits the available work space.

Purpose of the Invention This invention was made to solve the above-mentioned problems.It is an object of the present invention to enable people of all ages and genders to efficiently chop firewood, even when cutting wood with poor grain or many knots. The purpose of the present invention is to provide a wood splitter that can easily and reliably split even difficult logs.

Summary of the Invention The summary of the invention resides in the following wood splitting machine. In other words, it consists of a fixing part provided with an acutely protruding receiving claw for fixing one end surface of the raw wood, an actuator provided opposite to this fixing part, and a removably attached to the rod of this actuator. The wood chopping blade has an uneven cutting edge, and a guide that guides the cutting blade so that it does not swing when the actuator is extended or contracted.When the actuator is extended, the uneven cutting edge first becomes A wood splitting machine characterized by being configured so that it hits logs.

Outline of means for solving the problem One end surface of the raw wood W is attached to the acute-angled receiving claw 1 of the fixing part 7
6, and the wood splitting blade 5 is detachably attached to the rod 9 of the actuator 8 facing the fixing part 7.
The cutting edge part of the wood-splitting blade 5 is made into an uneven shape, and the wood-splitting blade 5 is guided by guides 13 and 14 to slide so as not to swing. When chopping wood, the uneven cutting edge of the wood chopping blade 5 is first brought into contact with the log W.

Operation: The wood splitting blade 5 slides and abuts against the log W fixed to the acute-angled receiving claw 16 of the fixed part 7 by extension of the actuator 8 without swinging along the guide. As a result, the log W is divided into firewood M.
At this time, since the cutting edge portion of the wood-splitting blade 5 has an uneven shape, the wood-splitting blade 5 can easily cut into the log W. The wood-splitting blade 5 easily and reliably cuts into the log W without slipping, and can be smoothly turned into firewood M. In addition, since the uneven cutting edge of the wood-splitting blade abuts against the log W, force is concentrated there, allowing smooth wood-splitting.

Embodiments Hereinafter, the present invention will be explained with reference to illustrated embodiments.

FIG. 1 shows an embodiment of a wood splitter according to the present invention.
The illustrated wood splitting machine is a self-propelled type, and is able to travel freely by a track-type traveling device 1 that can travel even on rough terrain, but it may be a tire-type traveling device.

The traveling device 1 has a base (2), and this base 2 includes:
A wood chopping table 3 is provided facing the front and back direction of the traveling device 1. As shown in FIGS. 1 to 4, this wood splitting table 3 includes an actuator mounting portion 4, a guide portion 6 for the wood splitting blade 5, and a fixing portion for fixing one end surface of the log W cut to an arbitrary length. Consists of 7.

The actuator 8 fixed to the actuator mounting portion 4 may be a reciprocating type, such as a hydraulic cylinder or a pneumatic cylinder, or a mechanical type. The rod 9 of the actuator 8 is
It is designed to be able to extend toward the fixed part 7,
A wood splitting blade 5 is detachably attached to the tip of the rod 9.

This wood splitting blade 5 is wedge-shaped, has an uneven tip, and is formed at the joint between the distribution plates 10 and 11 for sorting the firewood into left and right firewood M1 and M2, and the distribution plates 10 and 11. It has a blade 12,
The blade 12 consists of parting blades 12a, 12b, and 12c formed at the top, bottom, and center, respectively.

As shown in FIGS. 2 and 3, the guide portion 6 of the wood-splitting blade 5 is removably attached to the wood-splitting blade 3 by a bolt 6a, a nut 6b, and a spacer plate 6c. 13, 14, and a slide plate 15 whose left and right ends are held between these guides 13, 14 and the wood chopping stand 3.

This slide plate 15 is integrally fixed to the lower surface of the wood splitting blade 5 by welding. Further, the distance L between the guides 13 and 14 is set to be slightly larger than the width of the wood splitting blade 5.

The fixed part 7 has a raw wood W on the side facing the wood splitting blade 5.
(or firewood M) receiving claws 16 are provided.

Note that a drive source 20 for an actuator 8 is attached to the wood splitting table 3, and the actuator 8 is
As shown in FIG. 3, a switching valve (not shown) can be operated by a hand lever 30 to perform an extension operation. Furthermore, after chopping the wood, the actuator 8
is designed to automatically retract and return to its original position.

Additionally, seats for the operator of the log splitting machine can also be provided if necessary.

Firewood M is placed near the fixed part 7 and guides 13 and 14.
Receiving shelves 17 and 18 are removably attached to mounting pins 19. (See FIG. 4) Effects of the Embodiment Next, the effects of the above-described embodiment will be explained.

A wood splitting machine is transported and moved via a traveling device 1 to a mountain forest or the like where logs W for wood splitting are available.

At the destination, as shown in FIGS. 1 to 4, the log-shaped raw wood W, which has already been cut to a desired length, is placed on the wood chopping table 3 while being moved toward the fixed part 7 side. One end surface of the raw wood W is made to stick to the receiving claw 16 of the fixing part 7, and the other end surface is directed toward the wood chopping blade 5.

Next, as shown in FIGS. 4 and 5, operate the switching valve at the hand lever to switch the actuator 8.
is extended, the rod 9 is extended, and the wood-splitting blade 5 is guided by guides 13 and 14 to slide on the wood-splitting table 3 and abut against the other end surface of the log W.

By doing so, the log W is divided into left and right firewood M1 and M2, and the firewood M1 and M2 are rolled onto the receiving shelves 17 and 18.

When this wood splitting blade 5 slides, the guide 1
3 and 14 prevent horizontal swing, and since the heavy log-splitting blade 5 slides on the wood-splitting table 3, no vertical vibration occurs, causing damage to other appliances or the wood-splitting blade 5. You can slide smoothly without any friction.

In addition, the log W has receiving claws 1 formed in an acute angle shape.
6, there is no danger that the log W will bounce laterally or upward during splitting. Moreover, since the cutting edge of the wood splitting blade 5 has an uneven shape, it is easy to penetrate logs, so that the logs do not slip on the cutting edge.
Even if the wood has poor grain and many knots, it can be easily and reliably cut into raw wood that is difficult to break, such as raw wood with many knots or logs.

After the raw wood W is divided into firewood M1 and M2, the actuator 15 is automatically retracted, and the wood splitting blade 5 is guided by the guides 13 and 14 and smoothly returned to the predetermined position. (See Figure 4) The firewood M1 and M2, in which the raw wood W has been finely divided, are fixed again to the receiving claws 16, and the firewood splitting blade 5 can be used as is, or the firewood M1 and M2 can be cut to the size of the firewood M1 and M2 as needed. If you replace it with a small wood chopping blade, you can use firewood M1,
It is possible to further subdivide M2.

Note that the traveling device 1 is not necessarily required, and may be fixed at a predetermined location.

Furthermore, if an automatic firewood collecting device is installed near the firewood splitter, the firewood can be moved without human intervention. Further, the cutting edge portion may have other configurations, and the number of parting edges of the blade 12 may be two or four or more.

Effects According to the present invention, without requiring a large amount of human power,
To easily and reliably perform firewood chopping work regardless of age or gender. Moreover, the wood splitting work using the wood splitting machine of this invention can demonstrate about 10 times the work capacity compared to the wood splitting work using only human power.

In addition, until now logs that could not be split with an ax had to be cut vertically with a chainsaw, but this is no longer necessary, and the work capacity is about five times that of a chainsaw.

Instead of leaving raw wood with poor grain, raw wood with many knots, and wood that cannot be efficiently split with an ax or conventional log splitting device, all of them can be effectively used as firewood.

In particular, since it is equipped with acute-angled receiving claws, the log can be securely fixed even if the end face of the log is inclined, and there is no risk of the log bouncing sideways or upwards during splitting.

Furthermore, since the uneven cutting edge of the wood chopping blade is brought into contact with the log, the force is concentrated there, making the cutting reliable and easy, which has the effect of making the log easier to split.
This allows for low power and miniaturization.

According to the present invention, it is possible to easily and reliably chop wood even if the wood is difficult to split, such as raw wood with poor grain and many knots, or wood that is difficult to split, and the wood splitting work can be performed extremely efficiently and smoothly. It can be done.

[Brief explanation of the drawing]

Fig. 1 is a front view showing an embodiment of the wood splitter of the present invention, Fig. 2 is a plan view showing the main parts, Fig. 3 is a sectional view taken along line A-A in Fig. 4 and 5 are perspective views for explaining the wood-splitting work. DESCRIPTION OF SYMBOLS 1... Traveling device, 3... Wood chopping table, 5... Wood splitting blade, 7... Fixed part, 8... Actuator, 12
...blade, 13,14...guide, 16...claw, W...log, M...firewood.

Claims (1)

[Claims] 1. A fixing part provided with an acutely protruding receiving claw for fixing one end surface of the raw wood, an actuator provided opposite to this fixing part, and a removably attached to the rod of this actuator. It is equipped with a wood chopping blade with an uneven cutting edge and a guide that guides the wood cutting blade so that it does not swing when the actuator is extended and contracted. A wood splitting machine characterized by having a configuration in which it hits the.