JP2022094871A - Mini-backhoe attachment type wood-chopping machine - Google Patents

Abstract

To inexpensively provide a wood-chopping machine and provide safety by solving the problems that: (1) the currently and commercially available wood-chopping machine requires a power source for chopping raw wood, and a hydraulic device or a self-traveling device, and is very expensive due to a large number of components; and (2) since a wood-chopping lever is operated in a state where an operator himself/herself tends to manually fix the raw wood to a placement part during chopping, there is a risk that his/her hand is carelessly pinched by a movable part and get injured.SOLUTION: A wood-chopping machine is characterized in that: (1) it is manufactured at low cost because it is used by being attached to a mini-backhoe and only requires the minimum number of components (body, backing plate, clog, and lever), and also it is easily moved because it is integrated with the mini-backhoe; and (2) the operator needs to get close to the lever via movement of one walk step when placing raw wood on a placement part and operating the wood-chopping lever, and thus the body of the operator is away from a movable part by this movement, thereby being able to avoid a contact accident.SELECTED DRAWING: Figure 1

Description

The present invention relates to a wood-splitting machine that splits raw wood by attaching a wood-splitting machine as an attachment to a place where the bucket of a mini backhoe is removed and using the expansion and contraction of a hydraulic cylinder that operates the bucket.

In the past, wood for wood stoves was made by splitting chopped wood (hereinafter referred to as "raw wood") with an ax, but hardwoods such as Nara, Nagisa, and Kaki have the appropriate strength. It is quite difficult to divide with an ax.
Therefore, in recent years, manual type, electric motor type and engine type wood splitters using hydraulic pressure have come to be used.
In addition, self-propelled engine-type wood splitters are also commercially available.
The specifications are that hydraulic pressure is generated by using a manual, electric motor and engine as a power source, and the hydraulic cylinder (hereinafter referred to as "cylinder") is expanded and contracted by the hydraulic pressure, and the plate (metal wedge-shaped) at the tip of the operating part is used. The raw wood is placed between the blade) and the metal wedge-shaped blade (this plate) provided in the raw wood placing part, and the raw wood is cracked to make firewood.
In any case, a single wood-splitting machine already exists.

JP-A-2019-098589 Self-propelled wood splitter Japanese Patent Laid-Open No. 2014-201020 Firewood Splitter Japanese Patent Application Laid-Open No. 2013-001057 Firewood splitter

1 The existing wood splitter has the following drawbacks.
(B) The wood-splitting machine of Document 1 requires a power source for splitting raw wood, a hydraulic device, and a self-propelled device. Therefore, the number of parts is large, and as a result, the manufacturing cost is high.
(B) The wood-splitting machines of Documents 2 and 3 require a power source and a hydraulic device in addition to the device for splitting raw wood, and as a result, the number of parts is large and the cost is lower than that of Document 1, but the manufacturing cost is correspondingly high. It will be expensive.
(C) In the wood-splitting machines of Documents 1 to 3, when the raw wood is placed in the raw wood loading section and the wood splitting work is performed, the raw wood is usually rounded and easily rolls from the loading section. The wood is fixed to the mounting part with one hand of the worker himself, and the lever (hereinafter simply referred to as "lever") for expanding and contracting the cylinder is operated with the other hand.
Then, as a human error, there is a risk of a work accident in which the hand fixing the raw wood is caught between the raw wood and the expansion / contraction part of the cylinder while repeating the same operation many times, causing serious injury.
(2) In the wood-splitting machines of Documents 1 to 3, the frame of the wood-splitting machine is large and heavy, and a storage place is also required accordingly.
(E) Regarding Documents 2 and 3, when moving a wood splitter, it must be loaded on a carrier or manually, which requires new means of transportation or human labor.
The present invention has been made in order to eliminate the above-mentioned drawbacks.
2 In addition to the above, since the present invention is used by attaching a wood-splitting machine to the arm of the mini backhoe, the range of expansion and contraction of the cylinder for splitting firewood is smaller than that of a general wood-splitting machine. .. Therefore, only short raw wood can be cracked.
Compensating for this is the Geta 4 shown in the perspective view of FIG.
Normally, it is used at the position shown in Fig. 2, but if the length of the raw wood is 28 cm or less, or if the raw wood is 42 cm but there are bumps and it is not divisible, set it to the position shown in Fig. 3. It is a convenient one that can be divided when used.

1 Reduction of manufacturing costs in (a), (b) and (e) and omission of self-propelled device (1) Since the wood splitting machine of the present invention is used by attaching it to a mini backhoe, it is a wood splitting machine. The number of parts is only four, the main body shown in the perspective view of FIG. 1, the plate that pushes the raw wood, the getter 4 and the lever 12 that are used when the raw wood is small, and the manufacturing cost is very low due to the structure. Is.
(2) Regarding the problem of the movement of the wood-splitting machine in Documents 2 and 3, since the wood-splitting machine is integrated with the mini backhoe, it is possible to drive on a general road, and it is possible to drive on a rough road and a wooded area. Even if it is, you can move without any trouble.
As a matter of course, it has more mobility than the mobile wood splitter of Document 1.
2 (c) Dispelling the risk of work accidents (1) As a prerequisite, when chopping wood in the present invention, the angle of the arm of the mini backhoe is 45 degrees with respect to the ground, which is the most efficient work efficiency. Will improve.
That is, when the arm is made horizontal, the distance between the raw wood placing portion 13 and the lever 12 becomes long, and the lever cannot be reached even if the worker moves one step, and the work efficiency is lowered.
Also, when the arm is vertical, there are two claws 7 for fixing the raw wood, but if the raw wood is too short to reach these claws 7, the wedge-shaped blade that breaks the raw wood is at the bottom. Placement of raw wood becomes a little difficult to stabilize, and work efficiency decreases.
(2) Next, when the raw wood is placed on the raw wood placing portion 13 and chopped wood, in order to operate the lever 12, it is necessary to move one step closer to the lever 12 due to the structure of the present invention. ..
This one-step movement helps prevent work accidents.
That is, the standing position for operating the lever 12 does not touch the moving plate 4, the raw wood, and the wedge-shaped blade 3 anywhere in the body including both hands of the operator.
Even if you consciously try to touch raw wood, it is in a position where you cannot reach it.
As a result, accidents caused by human error can be reliably prevented.
Regarding 3 (2), the wood-splitting machine of the present invention has an extremely small number of parts, and therefore the weight of the wood-splitting machine itself is only about 30 kilograms, which is advantageous for carrying and storing.
As described above, the present invention is a mini backhoe attachment type wood splitting machine having a configuration in which a wood splitting machine is attached to an arm portion of the mini backhoe.

(B) The number of parts was extremely small, and the manufacturing cost could be significantly reduced.
(B) The two claws 7 attached to the main body are effective in preventing rolling by biting into the raw wood and stabilizing it when the raw wood is placed on the raw wood placing portion 13.
(C) Since the wood-splitting machine is integrated with the mini backhoe, it is easy to move and has mobility even on general roads and rough roads.
(2) When the raw wood is placed on the raw wood placing portion 13 and then the lever 12 is operated, the hand or the like is sandwiched between the raw wood and the movable part of the cylinder by moving half a step to the same lever position. The risk of serious injury has disappeared.
(E) With the addition of a completely new field of wood splitting, which has never been seen before, other than the original excavation and leveling of the mini backhoe, the usefulness of the mini backhoe has been added and the commercial value has improved.

Perspective view It is a top view by the trigonometry of this invention. It is a top view by the trigonometry at the time of using the geta of this invention.

Hereinafter, embodiments for carrying out the present invention will be described.
(B) In the present invention, the excavation bucket of the mini backhoe is removed, a wood-splitting machine is attached to the removed part, the raw wood is placed on the wood-splitting machine, and the lever for the wood-splitting machine is connected to the lever for the bucket operation. It is a machine that splits firewood by operating.
(B) The main body of the wood-splitting machine is about 30 kilograms, the push plate part is about 9 kilograms, the geta part is about 4 kilograms, and the overall size of the wood-splitting machine can be as compact as 75 cm x 33 cm x 23 cm. It is a structure that can be carried by an adult alone.
(C) This wood-splitting machine can be used on general roads by attaching it to a mini backhoe as an attachment, and it can move on rough roads and thickets without any problems. It is superior to mobility.
(2) The number of parts of the wood splitting machine is only 4 points of the main body shown in FIG. 1, the plate for pushing the raw wood, the geta 4 used when the raw wood is small, and the lever 12, and the structure is extremely high. It is simple and therefore very cheap to manufacture.
(E) Dispelling the risk of injury by pinching your hands, etc. When placing raw wood on the raw wood placing section 13 and chopping wood, in order to operate the lever 12, move one step structurally. You need to get closer to the lever.
This one-step movement helps prevent work accidents.
That is, the standing position for operating the lever 12 is in a position where it does not touch the movable backing plate 2, the raw wood, and the wedge-shaped blade 3.
Even if you consciously try to touch raw wood while operating the lever, it is in a position where it cannot be reached.
As a result, injuries caused by human error can be reliably prevented.
(F) When splitting firewood with this wood splitter, if the angle of the arm of the mini backhoe is set to about 45 degrees with respect to the ground, the work efficiency will be the best.
That is, when the arm portion is made horizontal, the distance between the raw wood placing portion 13 and the lever 12 becomes long, and in order to operate the lever 12 after placing the raw wood, the worker only moves one step. Then, the lever cannot be reached and the work efficiency is reduced.
In addition, when the arm portion is made vertical, the wedge-shaped blade that breaks the raw wood is located at the bottom, which makes it difficult to place the raw wood in a stable manner. In addition, if the raw wood is short and does not reach the two claws shown in FIG. 1 to fix the raw wood, the placement of the raw wood becomes unstable.
(G) As described in (a) to (f) above, the present invention is an epoch-making thing that is not found in existing models, which is attached to a mini backhoe as an attachment.
In addition, it is an inexpensive, compact, and highly maneuverable wood-splitting machine that provides a new place for mini backhoes to play an active role.

Claims (4)

A wood-splitting machine characterized by being attached to the arm of a mini backhoe as an attachment. A wood-splitting machine characterized by having claws for fixing raw wood A wood-splitting machine characterized by being equipped with geta for extruding raw wood A wood-splitting machine characterized by connecting an operation lever for operating the wood-splitting operation to the bucket operation lever of the mini backhoe.

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