JPH07204532A - Wood crusher - Google Patents

Abstract

PURPOSE:To provide a compact wood crusher improved in shearing efficiency such as easy removal of clogging of compressed sheared products at the time of shearing a wood and easy exchange of a chip. CONSTITUTION:In the wood crusher B mounted with a biaxial shearing machine A and a conveyer 8 discharging and conveying sheared woods, etc., on a machine body 1 having a crawler, a driving shaft 3 constituting the biaxial shearing machine A has an involute spline shaft structure and a cutter part of the shearing cutter is formed in a taper shape, and also a cutter edge (chip) is fixed to be exchangeable onto a shearing work face of the cutter part with one bolt.

Description

Detailed Description of the Invention

[0001]

FIELD OF THE INVENTION This invention relates to improving wood crushers.

[0002]

2. Description of the Related Art A biaxial shearing machine having a large number of shearing cutters meshing with each other on a machine body having a crawler,
A wood crusher equipped with a conveyor that continuously discharges and conveys wood that has been sheared by the biaxial shearing machine is known. As can be judged from the configuration of the shearing cutter shown in FIG. 8, in the conventional wood crusher, the shape of the drive shaft forming the biaxial shearing machine is a quadrangular axis, or a polygon such as a hexagonal axis or an octagonal axis. It is understood that a shaft and a drive shaft using a key are used. Since this type of drive shaft has a small surface pressure, a drive shaft having a large shaft diameter is required to obtain a required transmission torque. For this reason, there is a disadvantage that the cutter diameter becomes large and the tip force decreases. In addition, as shown in the figure, the shearing cutter has equal tooth roots and tooth tips, that is, the entire cutter is parallel, so when a material such as wood that is compressed during shearing expands between the teeth. Not only will it become clogged in the gap and cause jams in the shears, but it will be difficult to remove the clogged matter that is trying to expand. Furthermore, the shearing cutter is divided into a cutter holder and cutter teeth (tips), so that when the tip is damaged,
Alternatively, it is recognized that there is an advantage in that only the tip itself can be replaced without removing the cutter from the drive shaft at the time of wear, but the tip and the cutter holder are unavoidably many due to the coupling structure shown in the figure, for example, Since they are connected by four bolts, when replacing the chip, it is inconvenient that the work of removing the four bolts and screwing and setting work is required.

An object of the present invention is to provide a compacted wood crusher which can easily remove clogging of a compressed sheared material at the time of shearing the wood and can improve the shearing efficiency such as easy replacement of chips. To do.

[0004]

SUMMARY OF THE INVENTION The structure of the present invention which solves the problems of the prior art includes a machine having a crawler, a biaxial shearing machine having a plurality of shearing cutters meshing with each other, and
In a wood crusher equipped with a conveyor that continuously discharges and conveys wood that has been sheared by an axial shearing machine, a drive shaft that constitutes the biaxial shearing machine has an involute spline shaft structure, and is formed in the shearing cutter. A cutter unit that meshes with each other is formed in a tapered shape from a tooth tip to a tooth base, and a machine having a crawler has a biaxial shearing machine having a large number of shearing cutters that mesh with each other, and the biaxial shearing machine. In a wood crusher equipped with a conveyor that continuously discharges and conveys sheared wood, the cutter part of the shearing cutter is a plurality of ratchet gear-shaped cutter parts, and a positioning protrusion provided on the shearing action surface of the ratchet gear. It is composed of a cutter tooth (tip) that is meshed with and supported by the lower part of the shearing action surface of this cutter part. To the formed a recess having a contact supporting surfaces of the lower front of the chip is a chip with one bolt those replaceably secured to the cutter holder.

[0005]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Next, details of embodiments of the present invention will be described with reference to the drawings. 1 is a partially cutaway side view of a wood crusher of the present invention, FIG. 2 is a plan view of FIG. 1, FIG. 3 is a partially cutaway plan view of a biaxial shearing machine, and FIG. 4 is a vertical sectional front view of a main part of a biaxial shearing machine. Figure, Figure 5
Is a partially cutaway front view of the shearing cutter, FIG. 6 is an exploded perspective view of a main part of the shearing cutter, and FIG. 7 is an operation pattern diagram.

Reference numeral 1 denotes a machine body, and the machine body 1 is provided with a traveling crawler 2 driven by an engine mounted on the machine body 1. The machine body 1 is moved to a predetermined position by an operator. A is a biaxial shearing machine mounted on the machine body 1, and the biaxial shearing machine A is configured as follows.
3 is a drive shaft having a parallel biaxial structure that is horizontally installed on a machine frame 5 on which an hopper 4 is formed, and as is clear from FIG. 4, a drive shaft having an involute spline structure. Has a large number of shearing cutters 6 meshing with each other. Reference numeral 7 is a hydraulic motor provided at both ends of the drive shafts 3. Also, the shearing cutter 6 meshing with each other.
A discharge belt conveyor 8 that discharges and conveys the sheared timber to the rear of the machine body 1 is disposed in the entire area below the meshing portion of. The biaxial shearing machine A is configured as described above.

As shown in FIGS. 1 to 3, the meshing portion of the shearing cutter 6, that is, the cutter portion 6b from the tooth tip to the tooth root is formed in a tapered shape. By thus forming the cutter portion 6b in a tapered shape, it is possible to prevent a decrease in shearing efficiency due to a material such as wood that is compressed during shearing being blocked between the left and right cutter portions 6b that mesh with each other. In the figure, 9 is provided in the machine frame 5, and
It is a comb tooth-shaped scraper that intervenes between adjacent cutter portions 6b to remove clogging.

As is clear from FIGS. 5 and 6, the cutter portion 6b of each of the shearing cutters 6 is a ratchet gear-shaped cutter holder portion 6a and a positioning protrusion provided on the shearing action surface 6c thereof. A surface 6e which is formed by the cutter tooth (chip) 10 which is fitted and supported by the portion 6d and which communicates with the lower portion of the shearing surface 6c of the cutter holder portion 6a and abuts and supports the lower front portion of the tip 10. The side surface of the chip 10 has a U-shaped recess 6f, and the tip 10 is replaceably fixed to the cutter holder 6a with a single bolt 11.
In the figure, 10a is an insertion hole of the bolt 11 formed in the chip 10, and 12 is a screwing hole of the bolt 11 provided in the cutter holder portion 6a. As described above, the chip 10 is attached and detached by the single bolt 11, and the replacement work of the chip 10 is simplified. The wood crusher B of the present invention is configured as described above.

[0009]

[Explanation of action] For example, when constructing a golf course or a residential area, trees are felled, but the felled trees are pruned and the trunk trees are sent to a lumber factory for lumbering, but the branches are taken out as they are. It is bulky and inconvenient to handle, so it is finely sheared and carried out locally. The wood crusher B of the present invention is brought into a logging site, operated by an operator to a predetermined place, and stopped at a predetermined place. Separately from this, the operator operates a picking machine (not shown) that can be operated by one operator, and the branches pruned by the gripping mechanism provided at the tip of the arm of this picking machine are put into the hopper 4 of the wood crusher B. Supply and finely shear with a shearing cutter 6 that meshes with each other,
The shredded wood is carried out to the outside by the discharge belt conveyor 8 and also transported to another place by another transport vehicle. The remote control operating panel shown in FIG. 7 is placed in the operator's hand in the pick-in machine, and the wood crusher B is appropriately operated by remote control according to the operating pattern shown in FIG.

[0010]

As described above, according to the structure of the present invention, the following effects can be obtained. (A) Of course, when constructing a golf course or the like, the pruned branches can be efficiently and finely sheared to improve the processing efficiency, and (b) the drive shaft constituting the biaxial shearing machine is an involute spline. By adopting a shaft structure, the surface pressure can be made significantly larger than that of the conventional polygonal drive shaft, and as a result, the shaft diameter can be minimized and the diameter of the shearing cutter can be reduced. The tooth tip force is greatly advantageous as compared with the conventional drive torque, and the entire size can be made compact without lowering the shearing capacity of the biaxial shearing machine. (C) Since the cutter part of the shearing cutter is formed in a taper shape from the tip of the tooth to the root of the tooth, wood that has been compressed during shearing will not clog between the cutter parts, and even if it is clogged, a simple scraper, etc. It can be removed with to improve the shearing efficiency. (D) The cutter portion of the shearing cutter is formed by a plurality of ratchet gear-shaped cutter holder portions and cutter teeth (tips) fitted and supported by the positioning protrusions provided on the shearing action surfaces thereof, On the other hand, since a recess having a surface for contacting and supporting the lower part of the front surface of the tip was formed in communication with the lower part of the shearing action surface of the cutter holder part, the chip is fixed to the cutter holder part with one bolt. It can be worn and the tip can be replaced easily and quickly by operating a single bolt, and the shearing efficiency can be improved.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view of a wood crusher of the present invention.

FIG. 2 is a plan view of FIG.

FIG. 3 is a partially cutaway plan view of the biaxial shearing machine.

FIG. 4 is a vertical sectional front view of a main part of a biaxial shearing machine.

FIG. 5 is a partially cutaway front view of the shearing cutter.

FIG. 6 is an exploded perspective view of a main part of a shearing cutter.

FIG. 7 is an operation pattern diagram.

FIG. 8 is an exploded perspective view of a conventional shearing cutter.

[Explanation of symbols]

 A 2-axis shearing machine B Wood crusher 1 Aircraft 2 Crawler 3 Drive shaft 4 Hopper 5 Machine frame 6 Shearing cutter 6a Cutter holder part 6b Cutter part 6c Shearing surface 6d Projection part 6e surface 6f Recess 7 Hydraulic motor 8 Belt conveyor 9 Scraper 10 Chip 10a Bolt insertion hole 11 Bolt 12 Screwing hole

Claims (3)

[Claims] 1. A wood crusher comprising a machine having a crawler, a biaxial shearing machine having a large number of shearing cutters meshing with each other, and a conveyor for continuously discharging and transporting wood sheared by the biaxial shearing machine. In the wood crusher, the drive shaft constituting the biaxial shearing machine has an involute spline shaft structure. 2. The wood crusher according to claim 1, wherein the cutter portions formed on the shearing cutter and meshing with each other are formed in a tapered shape from a tooth tip to a tooth root. 3. A wood crusher equipped with a machine having a crawler, a biaxial shearing machine having a large number of shearing cutters meshing with each other, and a conveyor for continuously discharging and conveying the wood sheared by the biaxial shearing machine. In the above, the cutter portion of the shearing cutter is constituted by a plurality of ratchet gear-shaped cutter portions and cutter teeth (tips) which are meshed with and supported by the positioning protrusions provided on the shearing action surface of the ratchet gear. A recess having a surface for contacting and supporting the lower front surface of the tip was formed in communication with the lower portion of the shearing surface of the cutter portion, and the tip was replaceably fixed to the cutter holder with one bolt. A wood crusher characterized by that.