JP2001065177A - Crusher with arms replaceable according to object - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a crushing arm exclusively used for timber, capable of squashing timber and efficiently cutting timber having a large diameter and which has a function holding a stump and drawing it out. SOLUTION: A base unit is constituted of an arm support body constituted of a circular flange 3c connecting side plates 3a, 3b, a hydraulic cylinder 4, a bracket 5 for working machine, and a link mechanism as a transmission means of drive force. A pair of crushing arms 2A, 2B corresponding to an object are fitted through respective pins 8 so as to pivotally support the intermediate part at the side plates of the arm support body. Claws 9A, 9B facing the inside (pinching pressure side) are welded by welding or the like. Pressing and cutting blades 9a, 9b breadthwise sharpened at the tip respectively are fitted by bolts 9c, 9d, in the claw 9A, 9B.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a hydraulic cylinder for driving a pair of crushing arms pivotally supported between two side plates to crush and shatter an object such as a structure or wood by the crushing arm. Also, the present invention relates to a crusher for cutting a structure or wood, etc., which is cut by a blade provided on the crushing arm, and more particularly to a crusher capable of exchanging an arm according to an object to be crushed, such as a reinforced concrete building, a wooden house, and a standing tree.

[0002]

2. Description of the Related Art Conventionally, when crushing and removing a reinforced concrete building or the like in the demolition work of an existing building due to construction work or the like, means such as crushing with an air hammer type rock drill or breaking by hitting a large steel ball. Was used,
These methods have various drawbacks, such as causing a pollution problem accompanied by intense noise and vibration, or involving danger. Therefore, in recent years, a construction method in which a building crusher of a type in which a building is crushed by hydraulic pressure or the like is attached and used as an attachment of a working machine such as a power shovel has been widely adopted.

[0003] There are various types of such building crushers, for example, concrete structures which destroy walls, floors, columns, beams, etc. of concrete structures to be dismantled and drop them on the ground as blocks. However, it is suitable for so-called large percentage, because concrete pieces are too large in the state of being destroyed and hinder the carrying out work and can not be reused, so concrete pieces generated after breaking are finely crushed, so-called There are ones suitable for small splitting, and more particularly, cutter types suitable for cutting steel frames, reinforcing bars, pipes and the like.

[0004] In addition, for the purpose of cutting wood, such as street trees, wooden telegraph poles, sleepers, pillars of dismantled wooden houses, etc., there is also a construction method in which a cutter arm dedicated to wood is attached as an attachment of a working machine. I have.

In the case of treating these woods as a kind of industrial waste, for example, a method of incinerating and treating waste materials has been generally used. However, since dioxin is generated by incinerating waste materials, environmental and environmental pollution is inevitable. Had a problem. Therefore, in recent years, as a new method of treating such waste materials, a stationary wood pulverizer that can be transported by trucks or the like is used, and wood such as street trees is supplied from a hopper of the pulverizer,
Cuts the wood that has been thrown in by the rotary blade inside the crusher
It is sheared and pulverized, discharged in the form of fine chips or chips, and accumulated for a certain period of time to naturally ferment to form compost, which is distributed free of charge to farmers and the like. In such an environmental recycling system, wood is cut into a plurality of pieces using the above-mentioned wood cutter, and then supplied to a hopper of a stationary wood grinding machine. Examples of such a wood-specific cutter are disclosed in Japanese Patent Publication No. Hei 7-108165 and Japanese Patent Laid-Open Publication No. Hei 7-147850.

[0006]

In the case of redevelopment of a site in front of a station, it is necessary to crush and remove many buildings including reinforced concrete structures and wooden houses at the same crushing site. In addition, even if it is a single building, when crushing and removing a relatively high-rise reinforced concrete building, in addition to the above-described large and small work, it is also necessary to perform cutting work on steel frames, reinforcing bars, pipes, and the like. Needless to say.

[0007] In such a case, a crusher as an attachment suitable for each use is required. In order to purchase such a crusher, at least several million yen is required for one crusher. It was a heavy burden for users.

On the other hand, in the above-mentioned environmental recycling system, the wood-only cutter attached to the tip of the hydraulic excavator has only the function of cutting the wood to be supplied to the hopper of the stationary wood grinding machine into a plurality of pieces. It is only considered, that the wood is crushed and its fibrous material is disintegrated and then thrown from the hopper of the crushing machine to increase the efficiency of crushing processing, and that it has taken root in the soil The function of grasping the stump as it is and pulling it out of the soil was not considered at all. For example, when using the wood-specific cutters described in the above-mentioned publication, the blades are cut too much because they are formed for tree felling, and when the wood to be treated is sandwiched between its arms, the pinching is performed. Wood is cut without being crushed. Therefore, the cut wood has its fibrous properties, especially the vertical fibers of the tree, not broken, and even if it is supplied to a stationary wood pulverizer, a great deal of processing is required by the stationary pulverizer. It takes time. Moreover, since the wood is pulverized while destroying the vertical fibers of the newly introduced wood by the rotary blade inside the stationary pulverizer, low noise and low vibration processing could not be expected.

[0009] In addition, in the wood dedicated cutter described in the above-mentioned publication, a cutting blade is provided only near the base of the opposing cutter arms that can be freely opened and closed. It was not possible to cut at a stretch by grabbing a piece of wood, and it was difficult to cut wood having such a relatively large diameter efficiently. Furthermore, even if trees could be cut using these wood cutters, these wood cutters could not be used to grasp the remaining stumps and pull them out of the soil. The work of removing the excavated stump had to be done separately.

[0010] An object of the present invention is to solve the above-mentioned conventional problems and to provide a crusher in which an arm can be exchanged according to an object to be crushed, thereby enabling a low-cost and highly efficient dismantling / removal operation. I'll make it easy.

Another object of the present invention is to provide a crusher in which an arm can be exchanged according to the above-mentioned crushing object. Of the present invention is to provide a crushing arm dedicated to wood, which is capable of efficiently cutting wood and having a function of, for example, holding a stump with roots in the soil and pulling it out of the soil.

[0012]

In order to achieve the above object, the present inventor has a pair of crushing arms having an intermediate portion pivotally supported on an arm support, and the rear end of the crushing arm is hydraulically driven. In a crusher in which a crushing arm is driven by a cylinder to open and close the crushing arm to crush the target, the arm is designed to be exchangeable according to the target.

In a crusher capable of exchanging such arms, a pressure cutting blade for pressing and cutting wood is attached to at least one end of at least one pair of crushing arms in a width direction, and a rear end of the crushing arm is provided. The unit is driven by a hydraulic cylinder to open and close the crushing arm to press and cut the wood by the pressing and cutting blade, and to crush the entire crushing arm width region.

[0014]

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a perspective view of a crusher in which an arm can be exchanged according to an object according to an embodiment of the present invention.

First, a first embodiment of the present invention will be described.

FIG. 1 is a front view of the crusher of the present embodiment, and FIG. 2 is a side view of the crusher of the present embodiment.

Here, the base unit of the crusher common to the embodiments of the present invention will be described.

In FIGS. 1 and 2, the base unit generally includes an arm support 3 composed of side plates 3a and 3b and an annular flange 3c connecting these side plates 3a and 3b, a hydraulic cylinder 4, It is composed of a work implement bracket 5 and a link mechanism 6 as driving force transmitting means. Then, a pair of crushing arms 2A and 2B corresponding to the object are attached to the side plates 3a and 3b of the arm support 3 of the base unit via the respective pins 8 so as to pivotally support the intermediate portion.

Now, in the first embodiment of the present invention, the crushing arms 2A and 2B are formed in a substantially c-shaped claw shape.

Four through-holes (lightening portions) 11 are formed in the middle of the distal ends of the crushing arms 2A and 2B from the portion pivotally supported by the pins 8 to the foremost portion. . The through-hole portion (lightening portion) 11 is
The diameter is increased from the inside (pressing surface side) of A and 2B to the outside. Further, as shown in FIG. 1, the claw portions 9A and 9B facing inward (narrowing side) are fixed to the distal ends of the crushing arms 2A and 2B by welding or the like over the width direction. 9B, pressing cutting blades 9a and 9b for pressing and cutting the wood in the width direction, respectively, are provided with bolts 9a.
c, 9d. Press cutting blade 9a,
9b is formed in the shape of a sharply pointed blade opposed to each other.

As shown in FIGS. 1 and 2, the crushing arms 2A and 2B have substantially the same length, width and thickness, and the crushing arms 2A and 2B have substantially the same weight. ing. Also, the side plates 3a, 3b of the arm support 3
Are also formed in the same shape, so that the left and right weights are substantially equal to the center axis of rotation of the arm support 3 and are balanced.

The through-hole portion (lightening portion) 11 is
It has a function of reducing the weight of the crushing arms 2A and 2B, and further serves to prevent wood fibers and the like from being clogged inside the crushing arms 2A and 2B (on the pressing surface side).

As shown in FIGS. 1 and 2, the arm support 3 is rotatably connected to the working equipment bracket 5 via an annular flange 3c which is a part of the arm support 3, and the side plate of the arm support 3 is provided. Crushing arm 2 pivotally supported by 3a, 3b
The rear ends of A and 2B are connected via a link mechanism 6 including a link piece 18 connected to the piston rod of the hydraulic cylinder 4 and connecting rods 16 and pins 19 and 20 pivotally mounted on both sides of the link piece 18, respectively. The distal ends of the crushing arms 2A and 2B are driven to open and close in accordance with the operation of contracting and expanding the piston rod. Although not shown, the link plate 18 connected to the piston rod has side plates 3a,
A roller for guiding the piston rod by a guide groove provided in 3b is attached. Reference numerals 22 and 23 denote mounting holes for mounting the crusher 1 at the end of the boom on the working machine side.
Is pivotally supported on the boom tip of the working machine through the arm, and the working machine actuator pivotally attached to the other mounting hole 23 is expanded and contracted so that one mounting hole 22 is pivoted about the swing center. The posture is changed to an arbitrary swing position.

In the present embodiment, such a crusher 1 crushes and crushes wood as industrial waste, that is, waste material by a rotary blade in a crusher, discharges it as fine wood chips, accumulates it, and performs natural fermentation. The present invention is applied to an environmental recycling system in which compost is made into a compost. The crushing machine 1 is used to squeeze the wood to separate the wood fibers, and then crush the arms 2A, 2A.
B is cut by the press cutting blades 9a and 9b provided in B and supplied to a relatively small stationary wood crushing machine, so that the wood crushing efficiency is greatly improved, and the environment recycling system as a whole is improved. The goal is to achieve cost reduction.

FIG. 3 is a diagram showing an entire configuration in which the crusher 1 is applied to such an environmental recycling system.
Reference numeral 31 denotes a relatively small stationary wood crusher, 32 denotes a hydraulic excavator to which the crusher 1 is attached, and 33 denotes chip-shaped fine wood chips discharged from the wood crusher 31 and deposited. The wood crushing machine 31 includes a hopper 31a which is a supply port for wood or the like to be crushed, and a conveyor 31.
b.

An operator on the driver's seat of the excavator 32 to which the crusher 1 is attached operates a lever handle or the like (not shown) to drive the arm 32a of the excavator 32 and the crusher 1 to be processed. For example, when one of the woods 34 is sandwiched between the crushing arms 2A and 2B and the hydraulic cylinder 4 is driven to press the sandwiched woods 34, as shown in FIGS. Wood 3
4 can be crushed over the entire width region of the pressing surfaces of the crushing arms 2A and 2B. That is, by sandwiching and pressing between the pressing and cutting blades 9a and 9b together with the entire width area of the pressing surface between the crushing arms 2A and 2B, it becomes possible to separate the wood fibers of the sandwiched wood 34. From this state,
Further, when the crushing arms 2A and 2B are sandwiched, the press cutting blades 9a and 9b are engaged with each other, so that the wood 34 in which the wood fibers are broken can be completely cut. Thereby, the wood 34 can be cut within the dimensions of the hopper 31a of the wood crusher 31.

On the other hand, the wood 34 whose fiber quality has fallen apart
As shown in FIG. 3, the small pieces 34a fall into the hopper 31a as discrete pieces 34a, so that the first step of pulverizing wood into small pieces, which was conventionally performed on the side of a stationary wood pulverizer, is performed. It is also possible to carry out the treatment on the side of the crusher 1 dedicated to wood. For this reason, the burden on the wood crusher 31 can be reduced, and the operation time thereof can be significantly reduced. Further, since the wood crushing machine 31 only has to perform the crushing process from the state of the small pieces 34a, the noise and vibration thereof are significantly reduced as compared with the conventional stationary wood crushing machine.

If the crusher 1 of this embodiment is used, for example, a log having a diameter of 200 mm to 300 mm can be broken by one crush.

In the first embodiment, the crushing arm 2
The lengths of the wide end portions 2a and 2b of A and 2B are formed smaller than those of other embodiments described later. Press cutting blades 9a and 9b for pressing and cutting the wood in the width direction are provided at the tip thereof, as shown in FIG.
Opposite to each other, the tip portions are formed in a sharp pointed blade shape. For this reason, using the crusher 1 of the present embodiment provides the following operations and effects.

First, in the conventional wood-dedicated cutter, since a cutting blade is provided along the length direction only at the base of the arm, wood having a large diameter cannot be gripped between the cutting blade portions. On the other hand, in the crusher 1 of the present embodiment,
Since the pressing and cutting blades 9a and 9b are provided along the width direction at the ends of the wide end portions 2a and 2b of the arm, 9a and 9b are provided in a state where the pressing and cutting blades 9a and 9b are greatly opened.
In between, it is possible to grab large diameter wood.

Second, in the conventional wood cutter, a cutting blade is provided only along the length of the arm at the root portion, so that a large-diameter wood cannot be cut at once by the cutting blade. On the other hand, in the crushing machine 1 of the present embodiment, the length of the wide end portions 2a and 2b of the arm is formed small, and the cutting edge 9a is formed at the end along the width direction. , 9b are provided,
In a state where the space between the press-cutting blades 9a and 9b is largely opened, 9
After grasping a large diameter wood between a and 9b, it is possible to cut at once by closing the arm by hydraulic pressure. Therefore, the cutting efficiency is significantly improved.

Third, in the crusher 1 of the present embodiment, since the pressing and cutting blades 9a and 9b are provided along the width direction at the tip of the arm, wood is cut by the pressing and cutting blades 9a and 9b. Also, there is an effect that the cutting situation can be seen well when the camera is turned on.

Fourthly, in connection with the first point, the conventional wood cutter cannot grip the wood between the cutting blades, whereas the crusher 1 of the present embodiment presses the wood. 9a, 9b with the cutting blades 9a and 9b wide open
In the meantime, it is possible to grasp a large-diameter timber, so that even if a tree is cut down and the stump remains rooted in the soil, the stump is gripped between the press cutting blades 9a and 9b. By raising the arm 32a of the hydraulic excavator 32, the stump can be efficiently pulled out of the soil.

The fourth point will be specifically described with reference to FIG.

That is, the standing trees are cut down and the stumps 41, 4
In a state where the roots 2 and 43 are left in the soil with the roots left, the crusher 1 of the present embodiment is positioned, for example, right above the stump 41 as shown in FIG. Blade 9
The pressing and cutting blades 9a and 9b are positioned above the root of the stump 41 from the soil with the gap between the cutting blades a and 9b wide open, and the arms are slightly closed to move the pressing and cutting blades 9a and 9b to the roots. The stump 41 can be pulled out of the soil by raising the arm 32a of the excavator 32 as shown in FIG.

Therefore, unlike the case where the conventional wood cutter is used, the worker does not need to separately dig the soil and remove the stump, so that the stump can be removed very efficiently.

As described above, according to the crusher 1 of the present embodiment, the wood can be crushed to disperse the fibrous material, and at the same time, the wood having a relatively large diameter can be cut efficiently and the root can be buried in the soil. Functions such as grasping a stump stuck out and pulling it out of the soil can also be obtained.

Now, in order to obtain the same effect as the crushing machine 1 of this embodiment, a pressure cutting blade for pressing and cutting the wood in the width direction is attached to at least one end of the pair of crushing arms. The receiving end of the pressing blade may be provided at the other end. Therefore,
As a modified example of the first embodiment of the present invention, a crusher as shown in FIGS.

FIG. 5 shows a first modification of the first embodiment.

In the crushing machine 1B according to the first modification, as shown in FIG. 5, the wide end 2b of the crushing arm 2B is
Press cutting blade 9b that presses and cuts wood in the width direction
However, the distal end portion is formed in the shape of a sharp pointed blade, but the distal end portion 2a of the crushing arm 2A has a trapezoidal cross-section in the width direction as shown in FIG. The receiving portion 9a 'is formed.

FIG. 6 shows a second modification of the first embodiment.

In the crusher 1C according to the second modification, the wide end 2b of the crushing arm 2B is attached to the crushing arm 2B as shown in FIG.
Press cutting blade 9b that presses and cuts wood in the width direction
However, as shown in FIG. 6, the distal end portion 2a of the crushing arm 2A has a distal end portion smoothly formed like a mortar over the width direction as shown in FIG. A recessed receiving portion 9a '' is formed.

FIG. 7 shows a third modification of the first embodiment.

In the crusher 1D according to the third modification, as shown in FIG. 7, the wide end 2b of the crush arm 2B is
Press cutting blade 9b that presses and cuts wood in the width direction
However, the distal end portion is formed in the shape of a sharp pointed blade, but the wide distal end portion 2a of the crushing arm 2A has the blade shape of the pressing cutting blade 9b over the width direction as shown in FIG. Correspondingly, a receiving portion 9a '''recessed in an inverted triangular cross section is formed so that the blade shape just fits.

FIG. 8 shows a fourth modification of the first embodiment.

In the crusher 1E according to the fourth modification, as shown in FIG. 8, the wide distal end 2b of the crushing arm 2B is
Press cutting blade 9b that presses and cuts wood in the width direction
′ Is formed in a notch shape including a radius on the outside of the tip portion, and the wide tip portion 2a of the crushing arm 2A has a pressure cutting blade over the width direction as shown in FIG. 9
In correspondence with the blade shape of b ', a press-cutting blade 9a "'" formed in a notch shape including a radius at the inside of the tip is formed so that the blade shape is fitted exactly. .

Crushers 1B to 1 according to the above-described modifications 1 to 4
It goes without saying that the above-described first to fourth functions and effects can be obtained also in E.

In the crushing machine 1 of the present embodiment, the crushing arm 2A, which is attached to the wide end portion 2a, is removed and attached via the bolt 9c, so that the pressing cutting blade 9a and the receiving portion 9a 'are obtained. , Receiving part 9a '', receiving part 9
a '''' can be freely exchanged.

A feature of the present invention is that the crushing arm has a pair of crushing arms having an intermediate portion pivotally supported by an arm support, and the rear end of the crushing arm is driven by a hydraulic cylinder to open and close the crushing arm. In a crusher for crushing a target object, an arm can be exchanged according to the target object. Therefore, in the crusher 1 of the first embodiment, the press cutting blade 9
a, receiving part 9a ', receiving part 9a ", receiving part 9a""
The space between the crushing arms 2
It is of course possible to exchange A and 2B themselves.
Hereinafter, various embodiments will be described in which the base unit is common to the crushing machine 1 shown in FIGS. 1 and 2 and the pair of crushing arms 2A and 2B are replaced with another pair of crushing arms according to the crushing target. I do.

First, a second embodiment of the present invention will be described with reference to FIGS.

The crusher 20 according to the second embodiment includes:
As shown in FIGS. 9 and 10, in general, an arm support 3 including a pair of crushing arms 20 a and 20 b, side plates 3 a and 3 b, and an annular flange 3 c connecting these side plates 3 a and 3 b, It is composed of a hydraulic cylinder 4, a work implement bracket 5, and a link mechanism 6 as a driving force transmitting means, and an intermediate portion is pivotally supported on side plates 3 a and 3 b of the arm support 3 via respective pins 8. A pair of crushing arms 20a and 20b are formed in a substantially c-shaped claw shape, and the foremost portion is divided into a plurality of hawks and provided with crushing claws 7a and 7b. That is, the tip of the crushing arm 20a is divided into three parts, and crushing claws 7a are fixed to the respective ends by welding or the like. The other end of the crushing arm 20b is divided into two parts, and a crushing claw 7b similar to the claw 7a is fixed to the tip of the crushing arm 20b by welding or the like.

Four through-holes (lightening portions) 11 are formed in the middle of the distal ends of the crushing arms 20a and 20b from the portion pivotally supported by the pins 8 to the foremost portion. . The through-hole portion (lightening portion) 11 is
The diameter is increased from the inner side (pressing surface side) of 0a and 20b toward the outer side. Further, a pressing and cutting blade 9 for pressing and cutting wood is attached to the tip of the crushing arm 20a in the longitudinal direction, and the pressing and cutting blade 9 is attached to the tip of the other crushing arm 20b. Correspondingly, a receiving portion 10 of the press cutting blade 9 is provided in the length direction.

As shown in FIG. 9, the receiving portion 10 is made of a flat steel material, has a length slightly shorter than the length of the pressing surface at the tip of the crushing arm 20b, and is located inside the tip of the crushing arm 20b. The crushing arm 2 is positioned approximately at the center in the width direction on the pressure side).
The claw 7b is left over the length direction from the base end side of Ob and is provided corresponding to the press cutting blade 9. The receiving portion 10 is fixed inside the crushing arm 20b (on the side of the pressing surface) using a plurality of screws (dish screws) [not shown].

By using the crusher 20 of the second embodiment, wood can be crushed in the entire width region of the pressing surfaces of the crushing arms 20a and 20b. That is, by sandwiching and pressing between the pressing and cutting blade 9 and the receiving portion 10 together with the entire width area of the pressing surface between the crushing arms 20a and 20b, it is possible to separate the fibers of the sandwiched wood. Become. Further, as the pressure between the crushing arms 20a and 20b is reduced, the pressing cutting blade 9a and the receiving portion 10 are engaged with each other, so that the wood whose fiber has fallen apart is pressed by the pressing cutting blade 9a.
can be cut along a.

Further, since the foremost portions of the crushing arms 20a and 20b are divided into a fork shape and provided with claws 7a and 7b, respectively, the wood can be easily gripped by the claws 7a and 7b.

Further, since the pressing and cutting blade 9a is detachably attached by using the bolt 14a and the nut 14b, when the work is overlapped and the pressing and cutting blade 9a is worn out or the damage such as blade spillage occurs, It is easy to replace it with a new press cutting blade. The receiving part 10 is also a crushing arm 2.
It is fixed to the inside (pressing surface side) of Ob using a countersunk screw, so that it can be replaced when worn.

Since the pressure cutting blade 9a is detachably mounted using the bolts 14a and the nuts 14b, when the pressure cutting blade 9a is worn down, the pressure cutting blade 9a is removed.
The height of the blade may be adjusted by removing a and inserting a shim.

Next, a third embodiment of the present invention will be described with reference to FIGS.

The crusher 30 according to the third embodiment has
As shown in FIG. 11 and FIG. 12, a pair of arms 30 a and 30 b, a link mechanism 3, a hydraulic cylinder 4, a work implement bracket 5, and two side plates 6 a and 6 b constituting an arm support are schematically provided. Is done. Each of the pair of arms 30a, 30b is formed in a substantially "C" -shaped claw shape. As shown in FIG. 5, claws 7a, 7a 'and 7a are provided at the foremost portion of the arm 30a.
0a, the arm 30b
A plurality of claws 7b, 7b are superposed in the thickness direction of the arm 30b and provided at the foremost part of the arm 30b. The claw 7a 'attached to the center of the foremost part of the arm 30a is formed slightly larger than the other claw 7a, the tip of the claw 7a' is directed inward, and the claw 7a 'is opposed to the pressing surface of the other arm 30b. The other nail 7a
Closer distance. Claws 9a and 9b are provided at substantially the center of the clamping surfaces of the arms 30a and 30b, respectively.
Each of the arms 30a and 30b is provided with a through-hole (lightening portion) 8 at an appropriate position. These through holes 8
It is possible to recycle soil and concrete lumps that are large enough to fall down through the through-holes 8 in the subdivision work, while they can be recycled on the land at the demolition site. Has a function to sort it out of the site by truck or the like as unrecyclable. At the same time, the through hole 8 is provided with the arms 30a,
It has a function of preventing earth and sand from being clogged on the pressing surface of 30b, and is also useful for reducing the weight of arms 30a and 30b. 48a and 48b are shearing blades for cutting a reinforcing bar or the like, and can be appropriately replaced when damage such as blade spillage occurs.

In order to crush flat plates such as reinforced concrete walls and ceilings using the crusher 30 of the third embodiment, the crusher 30 is moved with the arms 30a and 30b of the crusher 30 open. The ends of the arms 30a and 30b are closed and clamped with the reinforced concrete plate such as a wall or ceiling positioned at the center of the open arms 30a and 30b.
The concrete is crushed by the entire surfaces of the wide arms 30a and 30b, and the small concrete fragments are crushed by a crusher 3.
The arm falls through the through hole 8 provided in the arm 30a, 30b.

While moving the crusher 30 along one side of the reinforced concrete flat plate such as a wall or a ceiling, the reinforced concrete flat plate is crushed to crush one side of the reinforced concrete flat plate, so that only the reinforcing bar is left. Therefore, the rebar is cut by shearing blades 48a and 48b provided in the crusher 30, and one side of the reinforced concrete plate is similarly crushed by the crusher 30, and then the rebar is cut. By repeating this operation, the reinforced concrete walls and ceiling slabs are destroyed and separated into small pieces of concrete and rebar. The concrete shards are already small pieces and do not require additional subdivision work. Further, even if a small portion is required, the small amount is small, and the crusher 30 scoops and crushes the concrete portion requiring the small portion to make small pieces. Even in this case, since the concrete fragments are falling means that the concrete fragments and the rebar are separated, the subdivision work can be easily performed.

Next, a fourth embodiment of the present invention will be described.

The crusher 40 according to the fourth embodiment is
As shown in FIG. 13 and FIG. 14, roughly, a pair of arms 40 a and 40 b, a link mechanism 3, a hydraulic cylinder 4, a work implement bracket 5, and two side plates 6 a and 6 b constituting an arm support are provided. Is done. Each of the pair of arms 40a and 40b is formed in a substantially c-shaped claw shape. The pair of arms 40a and 40b
The width is smaller than that of the third embodiment. As shown in FIG. 13, the arms 40a, 40a
In each of b, a claw 7a is provided at a leading end portion, a claw 7b is provided at an intermediate portion, and a shearing blade 7c is provided at a root portion. The claw 7a is configured to be larger than the claw 7b and to have a tip that bites into the squeezing surface side sharply.

In the crusher 40 according to the present embodiment, the above-mentioned work can be performed.
a, and the claw 7b are also formed, so that the bite into hard concrete is good. Therefore, it is suitable for dismantling relatively hard concrete structures such as foundations of buildings and piers.

Hereinafter, fifth to eighth embodiments of the present invention will be described.

Here, the premise of the present invention will be described with reference to FIG.
5 and FIG.

FIG. 15 shows a conventional crushing machine, and FIG. 16 shows a conventional cutting machine (cutter).

The crushing force of the crusher and the cutting force of the cutter are proportional to the magnitude of the moment M acting on the arm rotation axes O and O '. FIG. 15 shows a conventional crusher, and FIG. 16 shows a conventional cutter. The maximum moment is a force F × r1 for pressing the piston, and the minimum moment is F × r2. In both cases, the maximum moment is generated when the arm tip is most open, and the moment decreases as the arm is closed. In the crusher, the maximum crushing force (moment) is generated at a position where the arm tip is slightly closed from the most open state, In a cutting machine, ideally, the maximum cutting force (moment) is ideally generated when the blades mesh with each other (when the arm is closed by half or more). The crusher of FIG. 15 is suitable for crushing concrete or the like, but when only the arm is replaced with a crusher and used as a crusher, A
Since the moving distance of the part is long (the piston stroke is long), the moment is remarkably reduced when the blades mesh with each other, which is insufficient as a cutting machine. In the cutting machine of FIG. 16, the moving distance of the part A is short and the moment is reduced. However, when the crusher is used as a crusher instead of a crusher arm, the piston stroke is short and the opening width of the arm cannot be sufficiently large, so that the crusher is insufficient.
In the cutting machine shown in FIG. 16, the piston stroke is simply shortened to reduce the rate of reduction of the moment, and the maximum cutting force (moment) is generated when the blades engage with each other (when the arm is closed by half or more). Is not sufficient in that it is ideal.

As described above, the arms are exchanged between the hydraulic cylinder (piston rod) horizontal crusher and the cutting machine (cutter) as shown in FIGS.
It turned out to be difficult or impractical.

Therefore, the inventor of the present invention exchanges arms only between a hydraulic cylinder (piston rod) vertical crusher and a cutting machine (cutter).

First, a fifth embodiment of the present invention will be described.

As shown in FIGS. 17 and 18, a crusher (cutting machine) 50 according to the fifth embodiment generally includes a pair of arms 50a and 50b and a link mechanism 3.
And a hydraulic cylinder 4, a work implement bracket 5, and two side plates 6a and 6b constituting an arm support. Each of the pair of arms 50a and 50b is formed in a substantially "C" -shaped claw shape. A pair of arms 5
0a and 50b are configured to be narrow as in the above-described fourth embodiment. As shown in FIG. 17, a cutting blade 7a is provided inside the arm 50a (pressing surface side) in the length direction, and inside the arm 50b (pressing surface side), the cutting blade 7a extends in the length direction. And a cutting portion 7b that meshes with the cutting blade 7a in a shearing manner. The cutting blade 7a is attached to the inside of the arm 50a by a plurality of bolts 7c.

In the crushing machine (cutting machine) 50 according to the present embodiment, since the cylinder power is amplified by the link and transmitted to the cutting edge, an efficient structure can be obtained, so that a large cutting force can be exhibited. In addition, since it has a long cutting blade, the target object can be cut at a stretch from the blade tip to the back of the blade. The cutting blade 7a and the blade portion 7b can be used for a wide range of uses from thin iron plates to steel frames.

Next, a sixth embodiment of the present invention will be described.

As shown in FIGS. 19 and 20, a crusher (cutting machine) 60 according to the sixth embodiment generally includes a pair of arms 60a and 60b and a link mechanism 3.
And a hydraulic cylinder 4, a work implement bracket 5, and two side plates 6a and 6b constituting an arm support. Each of the pair of arms 50a and 50b is formed in a substantially "C" -shaped claw shape. A pair of arms 6
0a and 60b are configured to be narrow as in the above-described fourth and fifth embodiments. As shown in FIG. 19, on the inside (pressing surface side) of the arms 60a and 60b,
Press blades 7a are provided opposite to each other on the tip side,
A cutting blade 7b is provided on the root side. Press blade 7
Even when the arms 60a and 60b are completely closed, the gaps 7a and 7a do not mesh in a shearing manner, and form the gap 7c.

If the crusher 60 according to the present embodiment is used,
First, after holding the H-shaped steel or the like with the press blades 7a, 7a, the arms 60a, 60b are closed, and the arms 60a, 60b are crushed by being sandwiched by the gap 7c.
The crushed H-shaped steel or the like can be cut by the cutting blades 7b, 7b. As described above, since the steel frame can be cut after being crushed, the cutting capability is high, and it is particularly suitable for dismantling a steel structure.

Next, a seventh embodiment of the present invention will be described.

As shown in FIGS. 21 and 22, a crusher (cutting machine) 70 according to the seventh embodiment generally includes a pair of arms 70a, 70b and a link mechanism 3.
And a hydraulic cylinder 4, a work implement bracket 5, and two side plates 6a and 6b constituting an arm support. Each of the pair of arms 70a and 70b is formed in a substantially "C" -shaped claw shape. A pair of arms 7
Oa and 70b are configured to be narrow similarly to those of the above-described fourth to sixth embodiments. As shown in FIG. 21, cutting teeth 7a and 7b are detachably attached to the arms 70a and 70b by fixing means such as bolts on the respective opposing surfaces, and a cutting edge 17b of the cutting teeth 7b has a substantially arc shape. While being formed in a convex shape, the cutting edge 17a of the cutting tooth 7a is formed in a substantially arcuate concave shape so as to substantially follow the cutting edge 17b of the cutting tooth 7b. More specifically, the cutting edge 17
The curvature of b is slightly larger than the curvature of the cutting edge 17a, and when the pair of arms 70a and 70b are completely closed, the cutting edges 17a and 17b mesh with each other in a shearing manner substantially at the center.

With the crusher 70 according to the present embodiment,
It can be cut sharply without crushing wood or the like.
Therefore, it is very useful for cutting and pruning trees.

Next, an eighth embodiment of the present invention will be described.

As shown in FIGS. 23 and 24, a crusher (cutting machine) 80 according to the eighth embodiment generally includes a pair of arms 80a and 80b and a link mechanism 3
And a hydraulic cylinder 4, a work implement bracket 5, and two side plates 6a and 6b constituting an arm support. Each of the pair of arms 80a and 80b is formed in a substantially "C" -shaped claw shape. A pair of arms 8
0a and 80b are configured to be narrow similarly to those of the above-described fourth to seventh embodiments. As shown in FIG. 20, inside the arms 80a and 80b (pressing surface side), small split portions 7 are formed opposite to each other at the distal end side, and a cutting blade 8 is provided at the base side. . A plurality of projections 7a for crushing the concrete are formed on the tip side of the small part 7, and the center side of the small part 7 is configured as a press blade 7b.

With the use of the crusher 80 according to this embodiment,
Since the concrete can be crushed by the small portion 7 (projection 7a) at the tip and the reinforcing bar and the steel frame can be cut by the cutting blade 8 on the root side, the rebar / steel concrete structure can be easily dismantled.

Here, a ninth embodiment of the present invention will be described.

As shown in FIGS. 25 (a) and 25 (b), a crusher (cutting machine) 90 according to the ninth embodiment is similar to the above-described seventh embodiment of the present invention. A pair of arms 70a, 70b, a link mechanism 3, a hydraulic cylinder 4, a work implement bracket 5, and an arm support 2
It is composed of the side plates 6a and 6b. Each of the pair of arms 70a and 70b is formed in a substantially "C" -shaped claw shape. The pair of arms 70a and 70b are configured to be narrow as in the fourth to seventh embodiments. As shown in FIG. 25 (a), a cutting blade 7a having the illustrated shape is provided inside the arm 70a (pressing surface side) except for the tip, and inside the arm 70b (pressing surface side). , A hatchet portion 7b of the shape shown in the drawing is provided except for the tip portion,
The cutting blade 7a and the hatch portion 7b engage in a shearing manner with the arms 70a and 70b completely closed.

The crusher (cutting machine) 90 of the present embodiment
Then, similarly to the first modification of the first embodiment described above, the wide tip portion 700b of the arm 70b presses the wood in the width direction and cuts it, as shown in FIG. The pressing cutting blade 9b to be formed is shaped like a sharp pointed blade at the distal end, but the wide distal end 700a of the arm 70a extends in the width direction as shown in FIG. A receiving portion 9a 'is formed such that its tip has a trapezoidal cross section.

According to the crusher (cutting machine) 90 according to the ninth embodiment, the wide end portions 700b and 700a,
Furthermore, the press-cutting blade 9b and the receiving portion 9a 'provide the above-described first to fourth operations and effects, similarly to the crushers 1B to 1E according to Modifications 1 to 4 of the first embodiment. In addition, similarly to the crusher 70 according to the above-described seventh embodiment, it is of course that cutting of wood or the like becomes very easy by the cutting blade 7a and the hatch portion 7b. As a modification of the ninth embodiment, although not shown, the cutting blade 7a and the hatch 7b
May be formed in a shape in which the blade on the tip side is higher. This makes it difficult for the object to be cut to escape to the front end side during cutting, so that reliable cutting can be performed.

Next, a tenth embodiment of the present invention will be described.

The crusher (cutting machine) 100 according to the tenth embodiment has a structure as shown in FIGS. 26 (a) and 26 (b).
Although it has substantially the same configuration as the ninth embodiment of the present invention described above, the arms 70b and 70a are formed slightly shorter in the longitudinal direction than those of the ninth embodiment. Arm 70
On the side b, the pressing cutter blade 9b in the width direction and the hatchet 7 in the longitudinal direction
b are continuously formed without being separated, and on the arm 70a side, the receiving portion 9a 'in the width direction and the cutting blade 7a in the longitudinal direction are continuously formed without being separated. According to the crushing machine (cutting machine) 100 according to the tenth embodiment, the receiving portion 9a 'in the width direction and the cutting blade 7a in the longitudinal direction, the pressing cutting blade 9b in the width direction, and the hatching portion 7b in the longitudinal direction include: Each of the crushers 1B to 1E according to Modifications 1 to 4 of the first embodiment is formed by successively forming a T-shaped configuration by grasping wood or the like on the tip side of the T-shape. The first to fourth actions described above
The effect can be obtained, and wood or the like can be easily cut at the base of the T-shape. In the crusher (cutting machine) 90 according to the ninth embodiment, the pressing cutter blade 9b in the width direction and the hatchet portion 7b in the longitudinal direction, the receiving portion 9a 'in the width direction and the cutting blade 7a in the longitudinal direction are respectively provided. Because they are formed apart,
If there is a slight possibility, wood or the like may be fitted into the opposing spaced portions, making it difficult to cut.
In the crusher (cutting machine) 100 according to the embodiment, such a situation can be prevented. As a modified example of the tenth embodiment, although not shown, the cutting blade 7a and the hatch portion 7b may be formed in a shape in which the respective blades on the tip ends are higher. This makes it difficult for the object to be cut to escape to the front end side during cutting, so that reliable cutting can be performed.

Next, an eleventh embodiment of the present invention will be described.

The crusher (cutting machine) 110 according to the eleventh embodiment has a structure as shown in FIGS. 27 (a) and 27 (b).
It has a configuration substantially the same as that of the ninth embodiment of the present invention described above, but as shown in FIG. 27 (a), it is provided inside the arm 70a (on the pressure side) except for the distal end. Cutting blade 7a 'is formed in the shape of a saw. The arm 7
The hatches 7b having the shape shown in the drawing are formed on the inner side (pressing surface side) of 0b, except for the tip, exactly as in the ninth embodiment.

In the crusher (cutting machine) 110 according to the eleventh embodiment, since the cutting blade 7a 'is formed in a saw shape, wood or the like is sandwiched between the cutting blade 7a' and the hatch 7b. At the time of cutting, it is possible to effectively prevent the wood and the like from escaping to the distal ends of the arms 70a and 70b.

Next, a twelfth embodiment of the present invention will be described.

A crusher (cutting machine) 120 according to the twelfth embodiment has a structure as shown in FIGS. 28 (a) and 28 (b).
Although it has substantially the same configuration as the eleventh embodiment of the present invention described above, the arms 70b and 70a are formed slightly shorter in the longitudinal direction than those of the eleventh embodiment. On the side of the arm 70b, the pressing cutting blade 9b in the width direction and the longitudinal hatch 7b are formed continuously without being separated from each other. On the side of the arm 70a, the receiving portion 9a 'in the width direction and the cutting blade 7a' in the longitudinal direction.
Are formed continuously without separation. According to the crusher (cutting machine) 120 according to the twelfth embodiment, the widthwise receiving portion 9a 'and the longitudinal cutting blade 7a, the widthwise pressing cutting blade 9b, and the longitudinal hatching portion 7b are Each of the crushers 1B to 1E according to Modifications 1 to 4 of the first embodiment is formed by successively forming a T-shaped configuration by grasping wood or the like on the tip side of the T-shape. The above-described first to fourth functions and effects can be obtained, and wood or the like can be easily cut at the base of the T-shape. In the crusher (cutting machine) 110 according to the eleventh embodiment, the pressing cutter 9 in the width direction is used.
b, the longitudinal hatchet 7b, the widthwise receiving portion 9a ', and the longitudinal cutting blade 7a' are formed separately from each other. There is a possibility that it will be difficult to cut it,
In the crusher (cutting machine) 120 according to the twelfth embodiment, such a situation can be prevented.

Next, a thirteenth embodiment of the present invention will be described.

The crusher (cutting machine) 130 according to the thirteenth embodiment has a structure as shown in FIGS. 29 (a) and 29 (b).
It has substantially the same configuration as the eleventh embodiment of the present invention described above, but as shown in FIG. 29 (a), not only the cutting blade 7a 'inside the arm 70a (pressing surface side) but also the arm 70a
The hatches 7b ', which are provided on the inner side (pressing surface side) of b except for the tip, are formed in a saw-tooth shape.

According to the crusher (cutting machine) 130 according to the thirteenth embodiment, since the cutting blade 7a 'and the hatch 7b' are formed in a saw-tooth shape, the cutting blade 7a 'and the hatch 7b are formed.
′, When cutting wood or the like,
It can be effectively prevented from escaping to the distal end sides of a and 70b.

Next, a fourteenth embodiment of the present invention will be described.

The crusher (cutting machine) 140 according to the fourteenth embodiment has a structure as shown in FIGS. 30 (a) and 30 (b).
Although it has substantially the same configuration as the above-described thirteenth embodiment of the present invention, the arms 70b and 70a are formed slightly shorter in the longitudinal direction than those of the thirteenth embodiment. On the arm 70b side, the pressing cutter blade 9b in the width direction and the hatchet portion 7b 'in the longitudinal direction are continuously formed without being separated from each other.
On the side, the receiving portion 9a 'in the width direction and the cutting blade 7a in the longitudinal direction
Are continuously formed without being separated. According to the crusher (cutting machine) 140 according to the fourteenth embodiment, the widthwise receiving portion 9a 'and the longitudinal direction cutting blade 7a', the widthwise pressing and cutting blade 9b, and the longitudinal direction hatching portion 7b '. Are formed continuously and have a T-shaped configuration, so that the tip side of the T-shape grasps wood or the like, and thus a first modification of the first embodiment.
In addition to obtaining the above-described first to fourth functions and effects similar to those of the crushers 1B to 1E according to the first to fourth aspects, wood and the like can be easily cut at the base of the T-shape. In the crusher (cutting machine) 130 according to the thirteenth embodiment, the pressing cutter blade 9b in the width direction, the hatchet 7b 'in the longitudinal direction, and the receiving portion 9a in the width direction.
And the cutting blade 7a 'in the longitudinal direction are formed separately from each other, so that the wood or the like may be fitted into the opposing separated portions, making it difficult to cut. Crusher (cutting machine) according to the fourteenth embodiment
At 140, such a situation can be prevented.

Next, a fifteenth embodiment of the present invention will be described.

As shown in FIGS. 31 (a) and 31 (b), a crusher (cutting machine) 150 according to the fifteenth embodiment
Hydraulic cylinder (piston rod) as shown in FIG.
The end portions of a pair of arms of a horizontal-type cutting machine (cutter) are formed to be wide, and a pressing cutting blade 9b for pressing and cutting wood and a receiving portion 9a 'are provided in the width direction. According to the crushing machine (cutting machine) 150 according to the fifteenth embodiment, the first and second modified examples of the first embodiment are formed by the wide end portions 700b and 700a, and furthermore, the pressing and cutting blade 9b and the receiving portion 9a '. As in the crushers 1B to 1E according to the fourth embodiment, the first to fourth operations and effects described above are obtained. In addition, a hydraulic cylinder (piston rod) horizontal cutting machine (cutter)
Similarly to the above, it is a matter of course that wood and the like can be easily cut by the cutting blades 150a and 150b.

Next, a sixteenth embodiment of the present invention will be described.

As shown in FIGS. 32 (a) and 32 (b), a crusher (cutting machine) 160 according to the sixteenth embodiment
Hydraulic cylinder (piston rod) as shown in FIG.
The distal end portions of a pair of arms of a horizontal crusher are formed to be wide, and provided with a press cutting blade 9b for pressing and cutting wood and a receiving portion 9a 'over the width direction. According to the crusher (cutting machine) 160 according to the sixteenth embodiment, the first and second modified examples of the first embodiment are formed by the wide end portions 700b and 700a, and furthermore, the pressing and cutting blade 9b and the receiving portion 9a '. As in the crushers 1B to 1E according to the fourth embodiment, the first to fourth operations and effects described above are obtained. In addition, like the hydraulic cylinder (piston rod) horizontal type crusher, the protrusion 160a
And 160b to grip wood and the like,
And 160d.

Next, a seventeenth embodiment of the present invention will be described.

The crusher 170 according to the seventeenth embodiment
Has substantially the same configuration as the crusher according to the first embodiment described above, but as shown in FIG.
Ob and 70a are formed slightly shorter in the longitudinal direction than those of the first embodiment. Further, in the crusher 170 of the present embodiment, the distal end portion 700b of the arm 70b has
As shown in FIG. 3 (a), the pressing and cutting blade 170b for pressing and cutting the wood in a diagonal direction is formed into a sharp pointed blade, but the wide distal end of the arm 70a is formed. As shown in FIG. 33 (a), a receiving portion 170a 'having a trapezoidal cross section at its tip is formed in the oblique direction at 700a.

According to the crushing machine (cutting machine) 170 according to the seventeenth embodiment, the pressing and cutting blade 170b and the receiving portion 170a 'which are provided in the oblique direction provide a first modification of the first embodiment. Similar to the crushers 1B to 1E according to
The first to fourth functions and effects described above are obtained.

As a modification of this embodiment, FIG.
As shown in (b), the tip 700b of the arm 70b
As shown in FIG. 42, pressure cutting blades 170b1 and 170b2 are provided which are substantially orthogonal to each other in an oblique direction. Parts 170a'1 and 170a '
2 may be provided.

Next, an eighteenth embodiment of the present invention will be described.

A crusher 180 according to the eighteenth embodiment
Has substantially the same configuration as the crusher according to the first modification of the first embodiment described above, but as shown in FIGS. 34 (a) and 34 (b), the arms 180b and 180a It is formed slightly longer in the longitudinal direction than that of the first modification of the first embodiment. Further, in the crusher 180 of the present embodiment, as shown in FIG. 34 (b), the distal end portion 800b of the arm 180b is disposed at the center in the width direction and in the longitudinal direction.
The cutting blade 180b is formed continuously so as to be orthogonal to the pressing cutting blade 170b, and the distal end portion 800a of the arm 180a is provided at the center in the width direction and over the longitudinal direction as shown in FIG. 34 (b). Another cutting blade 180a meshing with the cutting blade 180b in a shearing manner is formed continuously so as to be orthogonal to the receiving portion 170a '.

According to the crushing machine (cutting machine) 180 according to the eighteenth embodiment, the first modified example of the first embodiment is realized by the pressing and cutting blade 170b and the receiving portion 170a 'provided in the width direction. As in the crushers 1B to 1E according to the first to fourth embodiments, the first to fourth operations and effects described above are obtained. Of course, wood and the like can be easily cut by the cutting blade 180b and the other cutting blade 180a.

As a modification of this embodiment, FIG.
(c) As shown in FIG.
b, the two cutting blades 180b1 and 180b2 are pressed at both ends in the width direction thereof in the longitudinal direction.
The other cutting blades 180a1 and 1801 are formed at both ends in the width direction (not shown) of the arm 180a at both ends in the longitudinal direction.
80a2 may be formed continuously so as to be orthogonal to the receiving portion 170a '.

Next, a nineteenth embodiment of the present invention will be described.

The crusher 190 according to the nineteenth embodiment
As shown in FIGS. 35 (a) and 35 (b), a pair of crushing arms 190A and 190B of a main body 190H having a general subdivider structure as a whole are respectively attached to the distal end portions in the width direction. A press cutting blade similar to that of the above-described embodiment and its receiving portion are provided. That is, as shown in FIG. 35 (a), the tip of one crushing arm 190A has a pressing cutting blade 19 for pressing and cutting wood or the like over the width direction.
0a is provided at the tip of the other crushing arm 190B in the width direction.
b is provided. The pressing and cutting blade 190a is formed in a sharp-edged blade shape at the tip, and has a receiving portion 190b.
Is formed such that its tip has a trapezoidal cross section. In the crusher 190 of the present embodiment, the hydraulic cylinder 19
The other crushing arm 190B opens and closes according to the expansion and contraction of the cylinder rod 190c of 0C, thereby crushing wood or the like. Since the crusher 190 of the present embodiment has a configuration of a general small splitter, it has a cost advantage that it can be manufactured at a relatively low price, and also has a mounting bracket 190.
Since the main body 190H does not rotate with respect to the mounting brackets 190d and 190e when it is attached to the tip of the arm of the excavator via the d and 190e, it is lifted by grasping the end of a long piece of wood or the like. Also at this time, the main body 190H does not rotate, so that a stable logging (crushing) operation is possible.

A crusher 190 according to the nineteenth embodiment
According to the above, similar to the crushing machines 1B to 1E according to the modified examples 1 to 4 of the first embodiment, the pressing and cutting blade 190a and the receiving portion 190b provided in the distal end portion of the crushing arm in the width direction are used. The first to fourth operations and effects described above are obtained.

As a first modification of the present embodiment, FIG.
As shown in FIG. 48 (c), at the tip of the crushing arm 190A, as shown in FIG. 48, pressure cutting blades 190a1 and 190a2 that are substantially orthogonal to each other in an oblique direction are provided. Receiving portions 190b1 and 190b2 that are substantially orthogonal to each other in an oblique direction may be provided at the distal end portion.

As a modification 2 of the present embodiment, as shown in FIG. 35 (d), a cutting blade 190f is provided at the center of the crushing arm 190A at the center in the width direction over the longitudinal direction. It is formed continuously so as to be orthogonal to the pressure cutting blade 190a, and at the tip end of the crushing arm 190B, not shown, is engaged with the cutting blade 190f in a shearing manner at its center in the width direction over its longitudinal direction. The cutting blade 190g is formed continuously so as to be orthogonal to the receiving portion 190b.

Further, as a third modification of the present embodiment, as shown in FIG. 35 (e), two cutting blades are provided at both ends in the width direction of the crushing arm 190A in the longitudinal direction thereof, as shown in FIG. 190f1 and 190f2 are formed continuously so as to be orthogonal to the pressure cutting blade 190a. At the tip of the crushing arm 190B, two other cutting blades (not shown) are provided at both ends in the width direction in the longitudinal direction. 190g1 and 190g
2 may be formed continuously so as to be orthogonal to the receiving portion 190b.

[0117]

According to the present invention, by providing a crusher whose arms can be exchanged according to an object to be crushed, low-cost and highly efficient disassembly / removal work can be performed.

Further, in the crusher in which the arms can be exchanged according to the crushing object, the wood can be crushed and the fibrous material can be scattered, and the wood having a relatively large diameter can be cut efficiently. It is possible to provide a crushing arm dedicated to wood, which also has a function of, for example, grasping a stump with a root in the soil and pulling it out of the soil.

[Brief description of the drawings]

FIG. 1 is a front view of a crusher according to a first embodiment of the present invention.

FIG. 2 is a side view of the crusher according to the first embodiment of the present invention.

FIG. 3 is a view showing a use mode of the crusher according to the first embodiment of the present invention.

FIG. 4 is a diagram showing a use mode of the crusher according to the first embodiment of the present invention.

FIG. 5 is a front view of a first modification of the crusher according to the first embodiment of the present invention.

FIG. 6 is a front view of a second modification of the crusher according to the first embodiment of the present invention.

FIG. 7 is a front view of a modification 3 of the crusher according to the first embodiment of the present invention.

FIG. 8 is a front view of Modification 4 of the crusher according to the first embodiment of the present invention.

FIG. 9 is a front view of a crusher according to a second embodiment of the present invention.

FIG. 10 is a side view of a crusher according to a second embodiment of the present invention.

FIG. 11 is a front view of a crusher according to a third embodiment of the present invention.

FIG. 12 is a side view of a crusher according to a third embodiment of the present invention.

FIG. 13 is a front view of a crusher according to a fourth embodiment of the present invention.

FIG. 14 is a side view of a crusher according to a fourth embodiment of the present invention.

FIG. 15 is an explanatory view of a conventional crusher.

FIG. 16 is an explanatory view of a conventional cutting machine.

FIG. 17 is a front view of a crusher according to a fifth embodiment of the present invention.

FIG. 18 is a side view of a crusher according to a fifth embodiment of the present invention.

FIG. 19 is a front view of a crusher according to a sixth embodiment of the present invention.

FIG. 20 is a side view of a crusher according to a sixth embodiment of the present invention.

FIG. 21 is a front view of a crusher according to a seventh embodiment of the present invention.

FIG. 22 is a side view of a crusher according to a seventh embodiment of the present invention.

FIG. 23 is a front view of a crusher according to an eighth embodiment of the present invention.

FIG. 24 is a side view of a crusher according to an eighth embodiment of the present invention.

25A and 25B are views showing a crusher according to a ninth embodiment of the present invention, wherein FIG. 25A is a front view thereof, and FIG. 25B is a side view thereof.

26A and 26B are views showing a crusher according to a tenth embodiment of the present invention, wherein FIG. 26A is a front view and FIG. 26B is a side view.

FIG. 27 is a view showing a crusher according to an eleventh embodiment of the present invention, wherein (a) is a front view and (b) is a side view.

FIG. 28 is a view showing a crusher according to a twelfth embodiment of the present invention, wherein (a) is a front view and (b) is a side view.

FIG. 29 is a view showing a crusher according to a thirteenth embodiment of the present invention, wherein (a) is a front view and (b) is a side view.

FIG. 30 is a view showing a crusher according to a fourteenth embodiment of the present invention, wherein (a) is a front view thereof and (b) is a side view thereof.

FIG. 31 is a view showing a crusher according to a fifteenth embodiment of the present invention, wherein (a) is a front view and (b) is a side view.

FIG. 32 is a view showing a crusher according to a sixteenth embodiment of the present invention, wherein (a) is a front view and (b) is a side view.

FIG. 33 is a view showing a crusher according to a seventeenth embodiment of the present invention, wherein (a) is a front view thereof, and (b) is a side view of an arm tip.

34A and 34B are views showing a crusher according to an eighteenth embodiment of the present invention, wherein FIG. 34A is a front view thereof, FIG. 34B is a side view of an arm tip, and FIG. It is a side view of the arm tip of a machine.

35A and 35B are diagrams showing a crusher according to a nineteenth embodiment of the present invention, wherein FIG. 35A is a front view, FIG. 35B is a side view of an arm tip, and FIG. FIG. 9D is a side view of the arm tip of the crusher according to the second modification, and FIG. 9D is a side view of the arm tip of the crusher according to the third modification.

[Explanation of symbols]

1,20,30,40,50,60,70,80
Crusher 2A, 30a, 40a, 50a, 60a, 70a, 80
a Crushing arm 2B, 30b, 40b, 50b, 60b, 70b, 80
b Crush arm 3a, 3b Side plate 3c Annular flange 3 Arm support 4 Hydraulic cylinder 5 Bracket for work machine 6 Link mechanism 8 Pin 9A, 9B Claw 9A, 9B Press cutting blade

Claims (2)

[Claims] 1. A crushing arm having a pair of crushing arms having an intermediate portion pivotally supported by an arm support, wherein a rear end of the crushing arm is driven by a hydraulic cylinder to open and close the crushing arm to crush an object. A crusher, wherein an arm can be exchanged according to an object. 2. The crushing machine according to claim 1, wherein a pressing cutting blade for pressing and cutting the wood is attached to at least one end of the pair of crushing arms in a width direction. A crushing machine which drives a rear end of the crushing arm with a hydraulic cylinder to open and close the crushing arm, presses and cuts the wood by the pressing and cutting blade, and crushes the entire crushing arm width region.