JP4041935B2 - Crusher - Google Patents

Description

[0001]
[Industrial application fields]
The present invention relates to a crusher with a cutter blade used for dismantling a structure such as a reinforced steel structure, and more particularly, to a crusher equipped with a frame that can be used in these devices to enable accurate adjustment of the cutting performance of the cutter.
[0002]
[Prior art and problems to be solved by the invention]
The crushing device and the cutter device are cut by shearing, but the cutting by shearing is performed in cooperation with the edges of the pair of cutter blades that open and close, so the pair of cutter blades is not in an appropriate relationship. And the object to be cut is bitten between the pair of cutter blades, and proper cutting cannot be performed.
[0003]
Therefore, a conventional crushing device for dismantling a steel reinforced steel structure or the like causes a rattling of the crushing arm at the pivoting portion of the crushing arm when the pair of cutter blades are poorly adjusted or used for a long time, and separates the crushing arm during cutting operation As the force acts in the direction and spreads the edge of the cutter blade in the vertical direction, cutting becomes impossible as a result. Tighten the nut of the bolt that also serves as the rotation axis of the crushing arm, and free the crushing arm mounting part The distance between the pair of cutter blades was adjusted by moving the ends inward.
[0004]
However, in the conventional crushing device, a mounting device mounting portion for mounting a mounting device for mounting on a work machine, a driving device mounting portion for mounting a driving device for driving the crushing arm, and a cutter blade at the base portion are provided. The frame of the conventional crushing device comprising the crushing arm mounting portion that rotatably mounts the pair of crushing arms has a crushing material and dust between the driving device mounting portion and the crushing arm mounting portion. There was a partition wall to prevent intrusion, so when tightening the nut to adjust, the partition wall part becomes a bending point when moving the free end of the crushing arm mounting part inward, but from the partition wall part A sufficient distance could not be taken to the rotation axis, and it was short, so a great tightening force was required.
[0005]
In addition, the conventional crushing apparatus has been one of the causes of reducing the crushing performance and cutting performance during the crushing operation and overloading due to vibration etc. to each part of the apparatus, but special measures have been taken against them. There wasn't.
[0006]
[Means for Solving the Problems]
The present invention has been made to solve the above-mentioned problems, and is a parallel plate-like drive for mounting a mounting device mounting portion for mounting a mounting device for mounting on a work machine and a driving device for driving a crushing arm. A frame comprising a device mounting portion and a crushing arm mounting portion for rotatably mounting a pair of crushing arms having a cutter blade at the base, and partitioning the drive device mounting portion and the crushing arm mounting portion with a partition wall In the crushing apparatus provided with the above, the partition is composed of a pair of partitions whose free ends are located on a plane perpendicular to the rotation axis of the crushing arm, and the contact state of the pair of cutter blades can be adjusted accurately. did.
In addition, a shock absorber is installed in the space formed by the two parallel plates of the drive unit mounting part to absorb the overload that occurs during work, reducing the generation of vibration and noise, crushing performance and cutting Prevented performance degradation.
[0007]
That is, the present invention is a crusher having the following configuration.
(1) A mounting device mounting portion for mounting a mounting device for mounting on a work machine, a parallel plate-shaped driving device mounting portion for mounting a driving device for driving a crushing arm, and a cutter blade at the base A crushing device comprising a crushing arm mounting portion that rotatably mounts a pair of crushing arms, and having a frame that partitions the drive device mounting portion and the crushing arm mounting portion by a partition wall, wherein the partition wall includes the crushing arm. A crushing apparatus comprising a pair of partition walls having free ends positioned on a plane perpendicular to the rotation axis of the crusher.
(2) The crushing apparatus according to item 1 above, wherein a cover member is provided on one of the pair of partition walls so as to extend over the wall surface of the other partition wall and cover between the opposing surfaces of the pair of partition walls.
(3) The crushing apparatus according to item 1 above, wherein the pair of partition walls are stepped and one partition wall is extended onto the wall surface of the other partition wall.
(4) A long hole is provided in the overlapping part of the pair of partition walls along the direction in which the partition wall moves during adjustment, and the adjusted pair of partition walls is formed by a bolt inserted through the long hole and a nut screwed into the bolt. 4. The crushing device according to any one of 2 or 3 above, wherein the crushing device is configured to be tightened.
(5) A mounting device mounting portion for mounting a mounting device for mounting on the work machine, a parallel plate-shaped driving device mounting portion for mounting a driving device for driving the crushing arm, and a cutter blade at the base A crushing device comprising a crushing arm mounting portion that rotatably mounts a pair of crushing arms provided, and comprising a frame that partitions a partition between the drive device mounting portion and the crushing arm mounting portion. A crushing apparatus comprising a pair of partition walls having a free end positioned on a surface perpendicular to a rotation axis of a crushing arm, and a shock absorber interposed between the parallel plate-like parts.
(6) The crusher according to the above item 5, wherein the shock absorber is a compressed air shock absorber.
(7) The crushing apparatus as described in (5) or (6) above, wherein a cover member is provided on one of the pair of partition walls so as to extend over the wall surface of the other partition wall and cover the opposing surfaces of the pair of partition walls.
(8) The crushing apparatus according to 5 or 6 above, wherein the pair of partition walls are stepped and one partition wall is extended to the wall surface of the other partition wall.
(9) A long hole is provided in the overlapping part of the pair of partition walls along the direction in which the partition wall moves during adjustment, and the adjusted pair of partition walls is formed by a bolt inserted into the long hole and a nut screwed into the bolt. 9. The crushing device according to item 7 or 8, wherein the crushing device is configured to be tightened.
[0008]
[Action]
The concrete part is crushed by the crushing arm, and the reinforcing bar is guided to the cutter part and cut. If the rebar can not be cut sufficiently during the operation, tighten the nut that is screwed to the bolt that also serves as the rotation axis of the crushing arm, and the edges of the pair of cutter blades provided at the base of the crushing arm are appropriate. Adjust so that it is in a positional relationship. Further, when the pair of partition walls are fastened with bolts and nuts, the bolts and nuts are loosened prior to the above adjustment, the above adjustments are performed, and then the bolts and nuts are tightened.
[0009]
DETAILED DESCRIPTION OF THE INVENTION
Hereinafter, embodiments of the present invention will be described with reference to the drawings by way of examples.
FIG. 1 is a perspective view of a crusher 1 assembled by mounting components on a frame 2 of a crusher 1 according to an embodiment of the present invention. FIGS. 2 to 4 show crushers 1 according to various embodiments of the present invention. It is the perspective view which notched a part of frame 2 and made the partition wall 6 appear.
[0010]
FIG. 5 is an external view of a working machine to which the crushing apparatus 1 of the present invention is attached. This working machine uses a hydraulic excavator as a base machine, and a rotating body B is placed on a crawler type traveling body A via a turning device. , The articulated front attachment is attached to the swivel B, and the crushing device 1 of the present invention is rotatably attached to the front end of the front attachment. It consists of a boom C that is mounted up and down by a boom cylinder as a center, and an arm D that is mounted on the tip of the boom C so as to be pivotable up and down around a pin. In the case of a hydraulic excavator, the tip of the arm An excavation bucket (not shown) is attached to a pin by a bucket cylinder via a link, but in this embodiment, a pressure is used instead of the bucket. Machine is intended was mounted et freely vertically rotated.
[0011]
As shown in FIGS. 1 to 4, the frame 2 of the crushing device 1 of the present invention includes an attachment device attachment portion 3 for attaching an attachment device for attachment to a work machine, and two parallel plate bodies 14, 14. A driving device mounting portion 4 for mounting a driving device for driving the crushing arms 7 and 7; a crushing arm mounting portion 5 for rotatably mounting a pair of crushing arms 7 and 7 having cutter blades 9 and 9 at the base portion; Covers 16, 16 for protecting the drive device from the crushed material and dust are detachably attached to the side windows 15, 15 between the parallel plate bodies 14, 14.
[0012]
Further, as shown in FIG. 1, the frame 2 is provided with a shaft 21 that pivotally supports one end of the hydraulic cylinder 22 on the drive device mounting portion 4, and a shaft 23 that pivotally supports the crushing arm 7 on the crushing arm mounting portion 5. Yes.
[0013]
The crushing arm 7 has a crushing portion 9 provided at one end and a cutter blade 9 provided at the base of the crushing portion, and a piston rod mounting pin of the hydraulic cylinder 22 is engaged with the other end so that the reciprocating motion of the piston can be rotated. A long hole that is connected so as to be convertible is provided, and a shaft that pivotally supports the crushing arm mounting portion 5 is provided between them.
[0014]
The drive device includes a hydraulic cylinder 22 and a piping system for supplying pressure oil to the hydraulic cylinder 22, and one end of the hydraulic cylinder 22 is freely rotatable by a shaft 21 provided in the drive device mounting portion 4. The other end is pivotally attached to a long hole provided in the crushing arm 7 by a shaft.
[0015]
As shown in FIG. 1, the crushing device opens and closes the left and right cutter arms 7, 7 to open and close a pair of left and right hydraulic cylinders 22 held by upper fulcrum portions 21, 21 provided on the upper left and right sides of the drive device mounting portion 4. , 22, a pair of left and right crushing arms 7, 7 held by main fulcrum parts 23, 23 provided on the left and right above the crushing arm mounting portion 5, the piston rod of the hydraulic cylinders 22, 22 and the crushing arm The object to be cut is cut by engaging the lever connecting portion for connecting the lever ends of 7 and 7 with the edges of the cutter blades 9 and 9 provided at the base of the crushing arms 7 and 7.
[0016]
Further, a mounting bracket provided with protruding mounting members facing each other is screwed with a large number of bolts above the mounting device mounting portion so as to be mounted on the boom of the work machine.
[0017]
FIG. 2 shows an embodiment of the partition wall according to the present invention. In this embodiment, the partition wall 6 separating the drive device mounting portion 4 and the crushing arm mounting portion 5 is provided, and the upper partition wall is provided on the upper wall inside the frame. A lower partition wall is provided on the bottom wall so that the line end surfaces face each other, and a gap between the upper and lower partition walls 61, 61 extends from one partition wall 61 to the wall surface of the other partition wall 61 and overlaps the other partition wall 61. Is provided.
[0018]
FIG. 4 shows another embodiment of the present invention, in which a pair of partition walls 61, 61 are stepped, one partition wall is extended up to the wall surface of the other partition wall, and a part thereof is overlapped. The cover member is unnecessary.
[0019]
FIG. 5 shows still another embodiment of the present invention, in which an elongated hole 65 is provided in the overlapping portion of the pair of partition walls 61, 61 along the direction in which the partition wall moves during adjustment, and a bolt 63 inserted through the elongated hole, A pair of partition walls is tightened after the adjustment by a nut 64 screwed into the bolt 63.
[0020]
In FIG. 3, a shock absorber 40 is also mounted. That is, a pair of cylindrical bodies 41 and 42 are combined in a nested manner with a seal member 43 interposed between the sliding contact surfaces, and a drain hole 44 and an air port 45 closed by a screw plug are provided in the cylindrical body. The shock absorber configured as described above is mounted between the two parallel plates 14 and 14 constituting the drive device mounting portion 4, and is 5 to 10 kg / cm ² from the pressure air source via the air port 45. This is a compressed air type shock absorber that is supplied with pressurized air and performs a buffering action.
[0021]
Although the present invention has been described based on the embodiment in which the present invention is applied to the crushing device, various structures other than the embodiment can be used for the main body of the working machine and the attachment when the present invention is implemented, and the mounting target is also the crushing device. However, the present invention is not limited to this, and can be applied to various devices that cut by shearing, such as a standing tree felling cutter having a cutting blade. In addition, although the description has been given of the partition wall provided integrally with the frame, a separately prepared partition wall may be attached by welding or the like.
[0022]
【The invention's effect】
Since the present invention is configured as described above, in the conventional crushing device, there is an integral partition wall between the drive device mounting portion and the crushing arm mounting portion, and when adjusting, the partition wall portion becomes a bending fulcrum, Compared to requiring a large tightening force because the distance between the tightening point and the bending fulcrum is small, the bending fulcrum is the connection point between the drive device mounting part and the mounting device mounting part. The distance between the fulcrum is increased and adjustment is possible with a small tightening force. As a result, fine adjustment is possible, and the cutting performance of the cutter can be adjusted accurately, and the drive unit and crushing arm are installed. Since there is a partition wall between the two parts, it is possible to prevent intrusion of the crushed material and dust into the drive device mounting part as in the conventional crushing apparatus.
[0023]
In addition, when a shock absorber is attached to the drive device mounting part, vibrations generated during work and noise associated with vibrations are absorbed to improve the work environment, and overload applied to the components of the crusher is reduced. It is possible to suppress separation of the edge portions of the pair of cutter blades that absorb and contribute to a decrease in crushing performance and cutting performance.
[Brief description of the drawings]
FIG. 1 is a perspective view of a crusher using a frame according to an embodiment of the present invention.
FIG. 2 is a perspective view in which a part of a frame according to an embodiment of the present invention is cut away.
FIG. 3 is a perspective view in which a part of a frame according to another embodiment of the present invention is cut away.
FIG. 4 is a perspective view in which a part of a frame according to another embodiment of the present invention is cut away.
FIG. 5 is an external view of a working machine equipped with the crushing device of the present invention.
[Explanation of symbols]
1: crusher, 2: frame
3: Mounting device mounting part, 4: Driving device mounting part,
5: Crush arm mounting part, 6: Bulkhead,
7, 7: Crushing arm, 9, 9: Cutter blade,
16: Cover body, 40: Shock absorber

Claims (9)

A pair of crushers having a mounting device mounting portion for mounting a mounting device for mounting on a work machine, a parallel plate-shaped drive device mounting portion for mounting a driving device for driving a crushing arm, and a cutter blade at a base portion The crushing device includes a crushing arm mounting portion that rotatably mounts the arm, and includes a frame that partitions the drive device mounting portion and the crushing arm mounting portion with a partition wall. A crushing apparatus comprising a pair of partition walls having a free end positioned on a surface perpendicular to an axis. The crushing apparatus according to claim 1, wherein a cover member is provided on one of the pair of partition walls so as to extend over the wall surface of the other partition wall and cover between the opposing surfaces of the pair of partition walls. The crushing apparatus according to claim 1, wherein the pair of partition walls are stepped, and one partition wall is extended onto the wall surface of the other partition wall. A long hole is provided in the overlapping part of the pair of partition walls along the direction in which the partition wall moves during adjustment, and the pair of partition walls is tightened by a bolt inserted through the long hole and a nut screwed into the bolt. The crushing apparatus according to claim 2, wherein the crushing apparatus is configured. A pair of mounting device mounting portions for mounting a mounting device for mounting on a work machine, a parallel plate-shaped driving device mounting portion for mounting a driving device for driving the crushing arm, and a cutter blade at the base A crushing arm mounting portion that rotatably mounts the crushing arm of the crushing arm, and a crushing device having a frame that partitions the drive device mounting portion and the crushing arm mounting portion with a partition wall, wherein the partition wall is a crushing arm of the crushing arm. A crushing apparatus comprising a pair of partition walls having a free end positioned on a surface perpendicular to a rotation axis, and a shock absorber interposed between the parallel plate-like parts. 6. The crusher according to claim 5, wherein the shock absorber is a compressed air shock absorber. The crushing apparatus according to claim 5 or 6, wherein a cover member is provided on one of the pair of partition walls so as to extend over the wall surface of the other partition wall and cover between the opposing surfaces of the pair of partition walls. The crushing apparatus according to claim 5 or 6, wherein the pair of partition walls are stepped and one partition wall is extended onto the wall surface of the other partition wall. A long hole is provided in the overlapping part of the pair of partition walls along the direction in which the partition wall moves during adjustment, and the pair of partition walls is tightened by a bolt inserted through the long hole and a nut screwed into the bolt. The crushing apparatus according to claim 7 or 8, wherein the crushing apparatus is configured.

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