JP2004290815A - Branch crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a branch crusher which dispenses with the adjustment of the clearance between a snap-off blade cutter and a fixed blade when the fixed blade of the crusher is replaced into a prescribed clearance between the snap-off blade cutter and the fixed blade. <P>SOLUTION: In the branch crusher having the crusher 1 for crushing an object by the snap-off blade cutter 6 fitted to a cutter wheel 3 and the fixed blade 10 fitted to a crushing frame and a feeding device for feeding the object charged from an inlet into the crusher 1, a fixed blade supporting plate 10 for positioning the fixed blade 10 at a position to make the clearance C between it and the cutting edge 9 of the snap-off blade cutter 6 a prescribed size is installed between the crushing frame 2 and the fixed blade 10. <P>COPYRIGHT: (C)2005,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a tree crusher that crushes a cut tree or a pruned tree branch into chips using a cutter knife attached to a cutter wheel and a fixed blade attached to a crushing frame.
[0002]
[Prior art]
As shown in FIG. 4, a tree crusher 30 that crushes a cut tree or a pruned tree branch into chips is generally provided with a crusher 41 that crushes a crushed object Z such as a tree or a tree branch. And a feeding device 31 for feeding the material Z to be ground into the hopper 33 from the charging port 32 into the crushing device 41.
[0003]
The feed device 31 is provided with a feed drum 34 driven by a feed hydraulic motor (not shown). The crushed object Z input from the input port 32 is crushed by the crusher 41 by rotation of the feed drum 34. It is fed into the crushing device 41 from a feed port 45 opened in the front of the frame 42.
In the pulverizing frame 42 of the pulverizing device 41, a cutter wheel 43 having a cutter knife 46 for shearing and pulverizing the fed pulverized material Z, and the pulverized material Z sheared and pulverized by the cutter knife 46 are further pulverized. And a fan blade 35 for discharging the crushed chips to the outside of the crusher 41 by wind power.
[0004]
The cutter wheel 43, the hammer knife 48, and the fan blade 35 are mounted on a common rotating shaft 44. The rotating shaft 44 is rotatably supported by the crushing frame 42, and is given high-speed rotation by a crushing hydraulic motor (not shown).
A chip discharge pipe 36 is provided above the pulverizing device 41. Further, adjacent to the crushing device 41, a power package 37 provided with accessory devices such as an engine, a hydraulic pump, a hydraulic motor and the like is arranged. (See Patent Document 1).
[0005]
The crushing device 41 includes a device in which the inlet 45 is arranged beside the rotating shaft 44 of the cutter wheel 43 and a device in which the inlet 45 is arranged below the rotating shaft 44.
As shown in FIG. 5, when the feed port 45 is disposed below the rotary shaft 44 of the cutter wheel 43, the cutter knife 46 is mounted on the surface of the cutter wheel 43 with a knife mounting bolt 47 and fixed. The blade 50 is attached to the end of the cutter wheel 43 in the rotation direction (left end in FIG. 5) of the feed port 45 of the crushing frame 42 by a fixed blade attachment bolt 54. As shown in FIG. 6, the fixed blade 50 is positioned so that a gap C is formed between the fixed blade 50 and the cutting edge 49 of the cutter knife 46.
[0006]
When the feed port 45 is arranged beside the rotary shaft 44 of the cutter wheel 43, the fixed blade 50 is attached to the lower end of the feed port 45.
In the case of crushing the crushed object Z such as a tree or a tree branch, the crushed object Z input into the hopper 33 from the input port 32 of the tree crusher 30 is fed to the crusher from the inlet 45 by the feed device 31. It is sent into 41. The cutter wheel 43 is given high-speed rotation by a pulverizing hydraulic motor, and the object to be pulverized Z is sheared and pulverized so as to be chopped between the cutter knife 46 and the fixed blade 50.
[0007]
In such a tree crusher 30, in order to improve the crushing efficiency and obtain good quality chips, the gap C between the cutting edge 49 of the cutter knife 46 and the fixed blade 50 is set to an appropriate size. It is desirable to set and attach.
If there is no gap C between the cutting edge 49 of the cutter knife 46 and the fixed blade 50, interference between the cutter knife 46 and the fixed blade 50 occurs during rotation of the cutter wheel 43, and the rotation of the cutter wheel 43 becomes impossible. Become.
[0008]
If the gap C between the cutting edge 49 of the cutter knife 46 and the fixed blade 50 is too wide, the force by which the cutter knife 46 tries to rotate the object to be crushed Z about the fixed blade 50 as a fulcrum at the time of pulverization becomes large. The pulverized material Z is violated and pulverization becomes difficult.
When the object Z has a small diameter, the object Z is broken not at the position of the cutter knife 46 but at the position of the fixed blade 50, so that the pulverizing performance is lowered and the quality of chips is deteriorated.
[0009]
Accordingly, when the fixed blade 50 is replaced due to wear or the like, the gap C needs to be adjusted. Adjustment of the gap C is performed by attaching the cutter knife 46 to the cutter wheel 43 and then moving the fixed blade 50 in the front-rear direction (right and left in FIG. 6) so that the gap C has a predetermined size, using a gauge or the like. By doing so.
As shown in FIGS. 7 and 8, the fixed blade positioning tool 60 which is detachable is fixed on the cutter knife 46 with the fixing bolt 61, and the fixed blade 50 is fixed to the fixed blade positioning surface of the fixed blade positioning tool 60. The gap is adjusted by using a dedicated fixed blade positioning tool 60 such that the positioning is performed by pressing the fixed blade positioning tool 60a and the gap C has a predetermined dimension when the fixed blade positioning tool 60 is removed.
[0010]
[Patent Document 1]
JP 2000-84906 A (FIG. 1)
[0011]
[Problems to be solved by the invention]
However, since the cutter knife 46 and the fixed blade 50 are in the crushing frame 42, when adjusting the gap C using a gauge or the like when replacing the fixed blade 50, the feeder 31 must be removed to insert the gauge or the like. And it takes time to work. In some cases, a small work window is provided so that the gap C can be adjusted without removing the feeding device 31, but it is difficult to adjust the small window because the small window is narrow.
[0012]
Moreover, since the cutter knife 46 is attached at a predetermined angle to the surface of the cutter wheel 43, it is fixed when the gap C between the fixed knife 50 and one point of the cutting edge 49 at the tip of the cutter knife 46 is adjusted. There is a case where the blade 50 is attached in an inclined state. In order to prevent the fixed blade 50 from tilting, it is necessary to adjust the gap C while rotating the cutter wheel 43 little by little.
[0013]
In addition, when adjusting the gap C using the dedicated fixed blade positioning tool 60, the fixed blade positioning tool 60 must be attached and detached, and the fixed blade positioning tool 60 needs to be stored at all times. is there. When the fixed blade positioning tool 60 is used, if the fixed blade 50 is securely pressed against the fixed blade contacting surface 60a of the fixed blade positioning tool 60 and fixed, the fixed blade 50 can be mounted in an inclined state. Absent. However, since it is difficult to visually confirm, there is a case where the fixed blade 50 is fixed in a state where the fixed blade 50 is inclined while being erroneously recognized as being securely pressed in a state where it is not securely pressed.
[0014]
The present invention solves the above-described problem in the tree crusher. When the fixed blade is replaced, adjustment of the gap between the cutter knife and the fixed blade becomes unnecessary, and the gap between the cutter knife and the fixed blade becomes unnecessary. It is an object of the present invention to provide a tree crushing machine that can be attached so that the size of the tree has a predetermined size.
[0015]
[Means for Solving the Problems]
In the present invention, a crushing device for crushing the crushed object with a cutter knife attached to the cutter wheel and a fixed blade attached to the crushing frame, and a feed device for feeding the crushed object input from the input port into the crushing device. In a tree crusher provided with a fixed blade supporting plate for positioning the fixed blade at a position where a gap between the cutting edge of the cutter knife and the cutting edge has a predetermined size, between the crushing frame and the fixed blade, the above-mentioned problem is solved. Solved.
[0016]
In this tree crusher, when replacing the fixed blade, remove the worn fixed blade, abut the new fixed blade against the support surface of the fixed blade support plate, and fix the fixed blade with the cutting edge of the cutter knife. Positioning can be reliably performed at a position where the gap between them has a predetermined dimension.
Therefore, when replacing the fixed blade, there is no need to adjust the positioning gap using a gauge or a dedicated fixed blade positioning tool, and the work of replacing the fixed blade becomes extremely easy. In addition, poor adjustment of the gap can be prevented, and the crushing performance can be improved.
[0017]
BEST MODE FOR CARRYING OUT THE INVENTION
FIG. 1 is a front view of a crushing device of a tree crusher showing an embodiment of the present invention, FIG. 2 is a sectional view taken along line AA of FIG. 1, and FIG. 3 is a sectional view taken along line BB of FIG.
Here, since the entire configuration of the tree crusher is the same as that of FIG. 4, common components are denoted by the same reference numerals, and detailed description is omitted.
[0018]
The tree crusher includes a crushing device 1 for crushing the crushed material Z, and a feeding device 31 for feeding the crushed material Z that has been input into the hopper 33 from the input port 32 into the crushing device 1.
A cutter wheel 3 for shearing and crushing the fed object to be crushed Z is rotatably supported in a crushing frame 2 of the crushing device 1 by a rotary shaft 4 and is driven at a high speed by a crushing hydraulic motor (not shown). Of rotation is given.
[0019]
A feed port 5 is opened below the rotary shaft 4 in front of the crushing frame 2 of the crushing device 1, and a feed device 31 is connected in front of the feed port 5. The crushed material Z input from the input port 32 is sent into the crusher 1 from the inlet 5 by the feeder 31.
A cutter knife 6 is attached to the surface of the cutter wheel 3 with a knife mounting bolt 7 and a nut 8 in a state of being inclined at a predetermined angle with respect to the surface of the cutter wheel 3 as shown in FIG.
[0020]
The crushing frame 2 has a stepped end (the left end in FIG. 1) of the cutter wheel 3 in the feed port 5 in the rotation direction, as shown in FIG. 2, and a fixed blade 10 is provided in this portion. . A fixed blade support plate 11 is disposed between the crushing frame 2 and the fixed blade 10.
The crushing frame 2 and the fixed blade support plate 11 are provided with through holes through which the fixed blade mounting bolts 14 are inserted. By screwing the fixed blade mounting bolts 14 inserted into the through holes to the fixed blade 10, A fixed blade 10 is fixed to the crushing frame 2.
[0021]
The fixed blade support plate 11 has a function of positioning the fixed blade 10 at a position where a gap C between the fixed blade 10 and the cutting edge 9 of the cutter knife 6 has a predetermined dimension. That is, although the fixed blade support plate 11 is attached to the crushing frame 2 with the plate mounting bolts 12, an appropriate amount of shim 13 is inserted between the fixed blade support plate 11 and the crushing frame 2 to fix the fixed blade 10. Is adjusted so that a gap C between the cutting edge 9 of the cutter knife 6 and the cutting edge 9 has a predetermined size. The shim 13 is provided with a through hole through which the plate mounting bolt 12 and the fixed blade mounting bolt 14 are inserted.
[0022]
If the width of the cutter wheel 3 in the rotation direction is too large, the resistance at the time of crushing increases the crushing efficiency of the crushing surface 10a of the fixed blade 10 located at a position separated from the cutting edge 9 of the cutter knife 6 by the gap C. In order to cause a decrease, the fixed blade 10 has a stepped shape so that the width of the crushing surface 10a is reduced.
Further, in order to make the fixed blade 10 reversible and usable, the crushing surface 10a is formed at two places on the right end rear surface and the left end front surface which are point-symmetrical in FIG. The fixed blade support plate 11 is narrower than the fixed blade 10 so as to form a space between the fixed blade contact surface 2a of the crushing frame 2 and the fixed blade 10 so as to form a space in which the stepped portion of the fixed blade 10 fits.
[0023]
When replacing the fixed blade 10 of the crusher 1, the fixed blade support plate 11 is not removed, only the worn fixed blade 10 is removed, and the front surface of the new fixed blade 10 is brought into contact with the support surface 11a of the fixed blade support plate 11. If the left end face is abutted on the fixed blade contact surface 2a of the crushing frame 2 and fixed, the fixed blade 10 is securely positioned at a position where the gap C between the cutter blade 6 and the cutting edge 9 has a predetermined size. Can be positioned.
[0024]
When the fixed blade 10 is used in an inverted manner, the removed fixed blade 10 may be inverted and attached in the same manner.
Thus, there is no need to adjust the positioning gap using a gauge or a dedicated fixed blade positioning tool, and the replacement work of the fixed blade 10 becomes extremely easy. In addition, poor adjustment of the gap C can be prevented, and the crushing performance can be improved.
[0025]
【The invention's effect】
As described above, the tree crusher of the present invention does not need to adjust the gap when replacing the fixed blade, and the work of replacing the fixed blade becomes extremely easy. In addition, poor adjustment of the gap can be prevented, and the crushing performance can be improved.
[Brief description of the drawings]
FIG. 1 is a front view of a crushing device of a tree crusher showing an embodiment of the present invention.
FIG. 2 is a sectional view taken along line AA of FIG.
FIG. 3 is a sectional view taken along line BB of FIG. 1;
FIG. 4 is a side view showing a configuration of a tree crusher.
FIG. 5 is a front view of a crushing device of a conventional tree crusher.
FIG. 6 is a side view showing a fixed blade attached state of a conventional crusher.
FIG. 7 is a front view showing an attached state of a fixed blade positioning tool of a conventional crusher.
FIG. 8 is an explanatory view of gap adjustment by a fixed blade positioning tool of a conventional crushing device.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 Crusher 2 Crushing frame 3 Cutter wheel 4 Rotary shaft 5 Inlet 6 Cutter knife 7 Knife mounting bolt 8 Nut 9 Cutting edge 10 Fixed blade 11 Fixed blade support plate 12 Plate mounting bolt 13 Shim 14 Fixed blade mounting bolt 30 Tree crushing Machine 31 feeder 32 input port Z crushed material

Claims (1)

Tree crushing with a crushing device that crushes the crushed object with a cutter knife attached to the cutter wheel and a fixed blade attached to the crushing frame, and a feeder that feeds the crushed object input from the input port into the crushing device. Machine,
A tree crusher, comprising a fixed blade support plate positioned between the crushing frame and the fixed blade at a position where a gap between the cutting edge of the cutter knife and the cutting edge of the cutter knife has a predetermined size.

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