JPH09217502A - Crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To allow a fixed- or movable-jaw side cutting element to have increased cutting efficiency, long life, and excellent performance in crushing reinforced concrete and to minimize damage to the fixed or movable jaw side cutting element during the work of cutting and crushing steel beams, reinforced concrete walls, etc., for the purpose of dismantling a structure made of steel, reinforced concrete or the like. SOLUTION: A fixed jaw main body 2 and a movable jaw main body 3 are provided on a crusher outer casing 1 in such a way as to freely open and close, and a fixed jaw side cutting element 5 and a movable jaw side cutting element 6 are provided, respectively, on the first ends of the fixed jaw main body 2 and the movable jaw main body 3 via a fixed jaw side cutting element mounting part 7 and a movable jaw side cutting element mounting part 8. Next, a plurality of fixed jaw side cutting part middle projections 10 or movable jaw side cutting part middle projections 11 that project from the cutting corner angle of the fixed jaw side cutting element 5 or the movable jaw side cutting element 6 are provided at appropriate intervals along the longitudinal direction on either one at least of the fixed jaw side cutting element mounting part 7 or the movable jaw side cutting element mounting part 8.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention is intended for the dismantling of structures such as steel frames or reinforced concrete, and is intended for the dismantling of steel beam members or the crushing work of reinforced concrete walls, floors, etc. The present invention relates to a crusher capable of increasing the cutting efficiency of a cutting body, extending its life, and excellently crushing reinforced concrete, and further capable of minimizing damage to a fixed jaw side cutting body or a movable jaw side cutting body of a reinforced concrete mass.

[0002]

2. Description of the Related Art In recent years, a crushing machine for crushing an object to be cut such as a steel beam or a reinforcing bar of a reinforced concrete structure (such as a building) and crushing an object to be crushed such as a reinforced concrete structure of a wall or a pillar has been developed. There are various types. At the time of the crushing, the work of cutting the reinforcing bar or the steel frame is also performed. The cutting operation of this rebar and steel frame is a cutting body provided on the fixed jaw side of the crusher and a cutting body provided on the movable jaw side (some crushers have two symmetrically mounted movable jaws, In this type, a cutting body is attached to both movable jaws.) It is carried out by the clamping action, but depending on the working conditions, the shape and size of the crushed object, The cutting efficiency was sometimes degraded.

That is, at the time of cutting, as the two cut bodies are closed, a slip occurs between the two cut bodies h, h and the crushed object, and the crushed object is pushed out of the cut objects h, h. As a result, the efficiency of the cutting work may decrease. Further, according to the known technique shown in FIGS. 13 to 15, there is a cutting body h having a corrugated cutting edge surface. According to this technique, it is explained that the corrugated cutting blade surface facilitates gripping and fixing rebar or the like.

However, in practice, as shown in FIG. 15 (A), when cutting is carried out by holding a reinforcing bar, the direction of the cutting force exerted by the cutting bodies h at that time on the crushed object is at each part. Therefore, there is a drawback that the cutting work is performed by dispersing in various directions or the cutting force becomes distributed load q, q, ... For the crushed object and the cutting work is performed [FIG. 15].
(See (A)].

Further, even when cutting a steel material having a rectangular cross section, there are two contact points between one cutting body h, h and the object to be crushed, so that the cutting force does not become a complete concentrated load and the cutting force is Dispersion load Q, Q, ..., and there is a drawback that cutting efficiency is reduced [see FIG. 15 (C)].

Alternatively, as shown in FIG. 13B, the corrugated cutting bodies h having the corrugated cutting blade surface have only one substantially rectangular parallelepiped surface as the corrugated cutting blade surface. When there are corners' and corners' on both sides in the width direction of the cutting blade surface, if the corners' become unusable due to wear or the like or the cutting becomes poor, the cut body h, The h was removed and replaced with the opposite side to make the corner portion ′ outside (see FIGS. 14A and 14B). As described above, in this type, only the two corners can be used, and it cannot be said that the cut bodies h have a long life.

[0007]

Then, as a result of the inventors' earnest research to solve the above-mentioned problems, the present invention was applied to a crusher housing by making the fixed jaw body and the movable jaw body openable and closable. Provided on the base side of the fixed jaw body and the movable jaw body,
A fixed jaw-side cutting body and a movable jaw-side cutting body are provided through the fixed jaw-side cutting body mounting portion and the movable jaw-side cutting body mounting portion, respectively,
At least one of the fixed jaw-side cutting body attachment portion and the movable jaw-side cutting body attachment portion has a fixed jaw-side cutting portion intermediate protrusion or a movable jaw that protrudes from a cutting corner portion of the fixed jaw-side cutting body or the movable jaw-side cutting body. By using a crusher that has a plurality of side cut intermediate projections at appropriate intervals in the longitudinal direction, a fixed jaw side cut body or a movable jaw can be used for cutting steel beam members or crushing reinforced concrete walls, floors, etc. The cutting efficiency is increased to the side cutting body, and its life is extended, and it is also excellent in crushing reinforced concrete.Furthermore, the reinforced concrete block can minimize damage to the fixed jaw side movable body or the movable jaw side cut body, It is a solution to the problem.

[0008]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, an embodiment of the present invention will be described with reference to the drawings. As shown in FIG. 1, the crusher mainly comprises a crusher outer casing 1, a fixed jaw body 2 and a movable jaw body 3. First, a fixed jaw body 2 is formed on the crusher casing 1, and the movable jaw body 3 is opened and closed on the fixed jaw body 2. The movable jaw main body 3 is pivotally supported at a substantially intermediate portion by the outer housing 1 of the crusher.

Here, the sides of the fixed jaw body 2 and the movable jaw body 3 that face each other in the opening / closing direction are referred to as the working surface side of the fixed jaw body 2 and the movable jaw body 3, and the opposite side of the working surface side is fixed. It is referred to as the outer side of the jaw body 2 and the movable jaw body 3.
Further, the longitudinal direction of the fixed jaw main body 2 and the movable jaw main body 3 is a direction protruding outward from the crusher outer casing 1, and the width direction is a direction orthogonal to the longitudinal direction.

The fixed jaw main body 2 and the movable jaw main body 3 are hollow or solid inside (see FIG. 4 (A)), and the movable jaw main body 3 is shown in FIGS. As shown in FIG. 3, the crusher is moved by a hydraulic cylinder 4 mounted inside the outer casing 1. As shown in FIG. 1, the hydraulic cylinder 4 has a cylinder body 4a rotatably provided in the crusher outer casing 1 on a vertical surface of the crusher outer casing 1, and a tip of a piston rod 4b is a movable jaw. The main body 3 is pivotally supported at the end opposite to the cutting edge.

On the working surface side of the fixed jaw body 2, a fixed jaw side cutting body 5 is provided along the longitudinal direction via a fixed jaw side cutting body mounting portion 7 protruding toward the working surface side. Also, a movable jaw side cutting body 6 is provided along the longitudinal direction also on the working surface side of the movable jaw body 3 via a movable jaw side cutting body attaching portion 8 projecting to the working surface side, and its fixed jaw When the movable jaw main body 3 is opened and closed on the main body 2, the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 move together with them in a scissor-like manner, and shearing removes an object S to be cut such as a reinforcing bar or beam. It can be cut (see FIG. 1, FIG. 4, FIG. 6, etc.).

The fixed jaw side cutting body 5 and the movable jaw side cutting body 6 are both in the same elongated slender cube shape, have a predetermined thickness and an appropriate height H, and are made of tool steel or the like. Hardened. A plurality of (6 in the drawings of the embodiment) mounting screw holes 5a are provided at one half of the height H of the fixed jaw side cutting body 5 and the movable jaw side cutting body 6 and in the longitudinal direction.
5a, ..., 6a, 6a, ..
(C) and FIG. 6 (B)]. The fixed jaw side cutting body attachment portion 7 and the movable jaw side cutting body attachment portion 8 have a substantially elongated cubic shape larger than the sizes of the fixed jaw side cutting body 5 and the movable jaw side cutting body 6, and the fixed jaw side L-shaped grooves 7a and 8a to which the cutting body 5 and the movable jaw-side cutting body 6 are attached are respectively formed.

The fixed jaw side cutting body 5 and the movable jaw side cutting body 6 are fixed jaw side cutting body attaching portion 7 and movable jaw side cutting body attaching portion 8 as shown in FIGS. L-shaped groove 7
a and 8a are respectively attached via mounting bolts 9, 9, ..., Fixed jaw side cutting body 5 and movable jaw side cutting body 6
The cutting corners and places to be worked by are the top surfaces 7b, 8b of the fixed jaw side cutting body mounting portion 7 and the movable jaw side cutting body mounting portion 8.
The facing surfaces which are substantially flush with each other and which are scissor-shaped are also flush with the side surfaces of the fixed jaw side cutting body attachment portion 7 and the movable jaw side cutting body attachment portion 8 (see FIG. 1). ).

Further, the tip ends of the fixed jaw side cutting body attaching portion 7 and the movable jaw side cutting body attaching portion 8 respectively have cutting corner portions and locations of the fixed jaw side cutting body 5 and the movable jaw side cutting body 6. Tip projections 7c, 8c formed higher on the work surface side than
Are formed. Mounting holes 7d formed in the fixed jaw side cutting body mounting portion 7 and the movable jaw side cutting body mounting portion 8, respectively.
The bolt head of the mounting bolt 9 is housed in 8d so that it does not project to the outer surface. Further, the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 have three unused cutting corner portions, that is, unused cutting corner portions [see FIG. 4 (A)]. . When these three cutting corners are worn or damaged such as when the corners wear, as shown in FIGS. 4 (B) and 4 (C), the fixed jaw side cutting is performed. By reversing the cross section of the body 5 (or the movable jaw side cutting body 6) in each height direction or reversing it in the longitudinal direction, it can be used as a new cutting body a total of four times [Fig. 4 (D)]. reference〕.

On the top surfaces 7b, 8b of the fixed jaw side cutting body mounting portion 7 and the movable jaw side cutting body mounting portion 8, cutting corner portions of the fixed jaw side cutting body 5 and the movable jaw side cutting body 6, Fixed jaw side cutting part intermediate projection 10 formed higher than the height of the place,
The movable jaw-side cutting portion intermediate projections 11, 11, ... Are integrally or separately formed at predetermined intervals in their respective longitudinal directions (see FIGS. 1 to 3). The heights of the fixed jaw-side cutting portion intermediate protrusion 10 and the movable jaw-side cutting portion intermediate protrusion 11 are formed to be equal to or slightly lower than the heights of the tip protrusion portions 7c and 8c, and the shape thereof is formed into a trapezoidal prism. ing. Further, although not shown, it may be formed in a trapezoidal cylindrical shape, and the shape is not limited.

A crushing blade 12 is attached to the tip of the fixed jaw body 2 as shown in FIGS. 1 and 6A. Specifically, as shown in FIG. 1, the crushing blade 12 has a shape in which an abacus is roughly halved, and its blade edge is gradually tapered toward the tip. A crushing blade 13 having a shape similar to that of the crushing blade 12 and larger than the crushing blade 12 is also mounted at a position slightly inside the tip of the movable jaw body 3 (see FIG. 1).

Further, the crushing blade 12 and the crushing blade 13 also have types other than the shape in which the abacus is roughly halved, and include, for example, a truncated pyramid shape, which is not shown. A tip rising portion 14 is provided at the tip of the movable jaw body 3. The crushing blade 12 and the crushing blade 13 are provided so as not to contact each other even when the fixed jaw body 2 and the movable jaw body 3 configured as described above are closed. At the rear end (left side in FIG. 1) of the crusher outer casing 1, there is provided a revolving body 15 that can be rotated at an appropriate angle and stopped at that position. , Is configured to cut or crush at the best angle.

As a second embodiment, as shown in FIG. 9 (A), only the fixed jaw side cutting portion intermediate projection 10 is provided, and the other structure is the same as that of the first embodiment. . In addition, as a third embodiment, as shown in FIG. 9B, only the movable jaw-side cutting portion intermediate projection 11 is provided, and the other configurations are the same as those of the first embodiment.

In the first to third embodiments, at least one of the fixed jaw body 2 and the movable jaw body 3 has only one fixed jaw side cutting portion intermediate projection 10 or one movable jaw side cutting portion intermediate projection 11. There are also provided embodiments. In FIG. 10, one fixed jaw side cutting part intermediate projection 10 and one movable jaw side cutting part intermediate projection 11 are provided on the fixed jaw main body 2 and the movable jaw main body 3, respectively.

Next, as a fourth embodiment, as shown in FIG. 11, it is composed of a pair of movable jaw bodies 3 and 3, as shown in the first to third embodiments of the present invention. There is a type that is not composed of the fixed jaw body 2 and the movable jaw body 3 but is composed of two movable jaw bodies 3 and 3 without the fixed jaw body 2. Both of the movable jaw bodies 3 and 3 are structured to be movable by one hydraulic cylinder 4. In this way the movable jaw body 3, 3
A plurality of movable jaw-side cutting portion intermediate projections 11, 11, ... Are provided at predetermined intervals on the movable-side cutting body attaching portions 8 and 8 to which the base-side movable jaw-side cutting bodies 6 and 6 are attached. Also,
In the fourth embodiment, although not particularly shown, two hydraulic cylinders 4 are attached to each movable jaw body 3,
There is also a type in which 3 is driven via separate hydraulic cylinders 4 and 4.

Although not shown, the fifth embodiment is structurally the same as the fourth embodiment, and the movable side cutting body mounting portion 8 of any one of the pair of movable jaw bodies 3 and 3 is provided.
, The movable jaw-side cutting part intermediate projections 11, 1 at a predetermined interval
A plurality of 1, ... Are provided.

Further, in the fourth embodiment, there is one in which at least one of the movable jaw bodies 3 and 3 is provided with only one movable jaw side cutting portion intermediate projection 11. FIG.
Is a movable jaw side cutting part intermediate projection 11 on both movable jaw bodies 3 and 3.
Each one is shown.

[0023]

The function of cutting the object S to be cut such as a reinforcing bar will be explained in the present invention. The fixed jaw side cutting body 5 and the movable jaw side cutting body 6 are opened and pressed against the object S to be cut such as a reinforcing bar. Then, the rebar, which is the object to be cut S, acts so as to slide between the fixed jaw side cutting body 5 and the movable jaw side cutting body 6, and when it is operated so as to be sandwiched, as shown in FIGS. 6 (A), (B) and As shown in FIG. 7, the fixed jaw side cutting part intermediate projection 10 at an appropriate position.
Also, the sliding can be stopped at the movable jaw side cutting portion intermediate projection 11 and the cutting can be performed at the base side of rotation. And
At this time, the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 can always cut the workpiece S while applying a cutting force of the concentrated load f [see FIG. 6 (B)].

Explaining this point in detail, as shown in FIG.
Conventionally, when the object S to be cut such as a reinforcing bar slips at the time of cutting, it stops at the tip projections 7c and 8c and cuts there, but in the present invention, rotation of the movable jaw body 3 The sliding of the workpiece S is stopped by the fixed jaw side cutting section intermediate projection 10 and the movable jaw side cutting section intermediate projection 11 on the base side close to the side, and the fixed jaw side cutting body 5 and the movable jaw side cutting body are brought into a fixed state. It can be cut with 6.

Therefore, the distance from the position of the pivotal support portion P of the movable jaw body 3 to the conventional cutting center position is L _2, and the pressing force at that time is F ₂ . Further, the distance from the position of the pivotal support portion P of the movable jaw body 3 to the cutting center position in the present invention is L
_1, and the pressing force at that time is F ₁ . Further, the pressure of the hydraulic cylinder 4 in the crusher is constant, and L ₁ × F
₁ = L ₂ × F ₂ . Then, as shown in FIG.
_{Since 1} <L _2, it is always F ₁ > F ₂ , and the cutting force can be significantly increased as compared with the cutting force at the conventional position, and the cutting efficiency can be improved.

Next, in order to crush an object C to be crushed such as a concrete structural material according to the present invention, generally, the movable jaw body 3 is moved relative to the fixed jaw body 2 shown in FIG. Crush with the blades 12 and 13. In this case, it is suitable for large sections. Further, when the crushed object C such as a concrete structural material has a relatively small diameter as shown in FIG. 8 (A), the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 will hold it together. . Then, the concrete is crushed by the fixed jaw-side cutting portion intermediate projection 10 and the movable jaw-side cutting portion intermediate projection 11 to cut the internal steel frame [see FIG. 8 (B)].

The operation will be described in detail. When the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 are operated so as to be sandwiched, first, the fixed jaw-side cutting portion intermediate projection 10 or the movable jaw-side cutting portion intermediate. The projection 11 makes contact with the surface of the crushed object C. Then, the fixed jaw side cutting part intermediate projection 10
Alternatively, the movable jaw-side cutting portion intermediate projection 11 serves as a crushing projection, and the crushed object C can be crushed.

In particular, even in this case, since the cutting blades 12 and 13 which are not present at the tip end are used, the root side is crushed and the crushing energy is increased. Further, the crushed object C may be crushed by the tip projections 7c, 8c of the fixed jaw side cutting body attachment portion 7 or the movable jaw side cutting body attachment portion 8. Also in this case, the movable jaw body 3 is crushed on the side of the shaft support portion P, and the crushing efficiency can be improved.

As described above, the fixed jaw side cutting portion intermediate projection 10
Alternatively, the movable jaw-side cutting portion intermediate projection 11 plays a role of crushing, and further, it is possible to prevent the cutting corner portions of the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 from being damaged. That is, conventionally, the fixed jaw side cutting body 5 and the movable jaw side cutting body 6 are crushed objects C such as concrete structural material at 6 places.
If the crushing is done, the cutting corners of the fixed jaw side cutting body 5 and the movable jaw side cutting body 6 are inevitably damaged or damaged, but the fixed jaw side cutting portion intermediate projection 10 or the movable jaw is broken. Since the side cut intermediate projection 11 receives most of the breaking reaction force, breakage or damage can be prevented to a negligible extent.

[0030]

According to the invention of claim 1, the fixed jaw main body 2 and the movable jaw main body 3 are provided in the crusher casing 1 so as to be openable and closable, and the base side of the fixed jaw main body 2 and the movable jaw main body 3 is provided. , A fixed jaw side cutting body attachment portion 7 and a movable jaw side cutting body attachment portion 8 are provided with a fixed jaw side cutting body 5 and a movable jaw side cutting body 6, respectively. Fixed jaw side cutting body intermediate protrusion 10 or movable jaw side cutting portion intermediate protrusion 11 protruding from the cutting corner of the fixed jaw side cutting body 5 or the movable jaw side cutting body 6 on at least one of the jaw side cutting body attaching portions 8.
First, in particular, the object to be cut S such as a reinforcing bar is first of all constituted by a plurality of crushers provided in the longitudinal direction at appropriate intervals.
The cutting efficiency is increased, secondly it is suitable for crushing the crushable object C such as concrete structural material, and thirdly, the crushable object C is fixed at the fixed jaw side cutting body 5 and the movable jaw side cutting body 6 places. Even if it is crushed, there is an effect that the damage and damage of the blade can be almost eliminated.

To describe these effects in detail, in the conventional case, when the object S to be cut such as a reinforcing bar slips at the time of cutting, it stops only at the projection of the tip portion of the cutting body, and cutting is performed here. However, according to the present invention, the movable jaw body 3 has not been able to obtain the strongest cutting force.
The fixed jaw-side cutting part intermediate projection 10 or the movable jaw-side cutting part intermediate projection 11 on the base side close to the rotation side stops the sliding of the object S to be cut, and the fixed jaw-side cutting body 5 and the movable body 5 are moved as a fixed state. It can be cut with the jaw-side cutting body 6.
When the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 perform the cutting work, the corners of the cutting blade surfaces of the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 are linear. To be
A cutting force of a concentrated load f is always applied to the object S to be cut, and the cutting efficiency of the object S to be cut can be improved [see FIG. 6 (B)].

Therefore, as shown in FIGS. 6 and 7, when the object S to be cut is held by the fixed jaw side cutting body 5 and the movable jaw side cutting body 6, the object S to be cut is cut into both sides. Even if the cutting blade surface is slid by the closing movement of the body, it is caught in any part of the fixed jaw-side cutting part intermediate projection 10 or the movable jaw-side cutting part intermediate projection 11 to firmly cut the object S to be cut. The cutting work can be performed while fixing it between the bodies (see FIG. 7).

Next, in the case of crushing an object to be crushed C such as a concrete structural material containing a steel frame and a reinforcing bar inside, conventionally, in general, the movable jaw main body 3 is moved relative to the fixed jaw main body 2 to perform the crushing. Although it is crushed on the blades 12 and 13 side, in the present invention, the crushed object C such as a concrete structural material is provided by providing the fixed jaw side cutting part intermediate projection 10 or the movable jaw side cutting part intermediate projection 11. Is relatively small, the fixed jaw side cutting body 5 and the movable jaw side cutting body 6 hold the fixed jaw side cutting section intermediate projection 10 or the movable jaw side cutting section intermediate projection 11 for crushing. Fixed jaw body 2
And the movable jaw body 3 is crushed on the base side, the crushing energy is increased, and the crushing efficiency can be improved.

Next, since the fixed jaw-side cutting portion intermediate projection 10 projects from the cutting blade surface of the fixed jaw-side cutting body 5, when the object to be crushed C is crushed, the fixed jaw-side cutting portion intermediate projection 10 is provided. Can reduce the burden on the fixed jaw side cutting body 5 by hitting the crushed object C before the fixed jaw side cutting body 5, protects the fixed jaw side cutting body 5, and pulls the fixed jaw side cutting body 5. The life of 5 can be extended. Similarly, since the movable jaw-side cutting section intermediate protrusion 11 projects from the cutting blade surface of the movable jaw-side cutting body 6, when the object to be crushed C is crushed, the movable jaw-side cutting section intermediate protrusion 11 is movable. It is possible to reduce the load on the movable jaw-side cutting body 6 by hitting the crushed object C before the jaw-side cutting body 6, or the movable jaw-side cutting body 6
It is possible to extend the life of the movable jaw-side cutting body 6 by protecting it and pulling it.

Next, according to the invention of claim 2, in the crusher according to claim 1, both the fixed jaw side cutting part intermediate projection 10 and the movable jaw side cutting part intermediate projection 11 are provided. There is an advantage that the cutting of the object S to be cut and the crushing of the crushed object C can be more effectively performed. That is, since the fixed jaw side cutting body 5 side is provided with the fixed jaw side cutting portion intermediate projection 10 and the movable jaw side cutting body 6 side is provided with the movable jaw side cutting portion intermediate projection 11, The S and the crushed object C can be reliably locked by both the fixed jaw side cutting section intermediate projections 10 and the movable jaw side cutting section intermediate projections 11, and an efficient cutting operation can be performed.

According to a third aspect of the present invention, in the first aspect, the fixed jaw side cutting body 5 or the movable jaw side cutting body 6 is an elongated cube, and its mounting screw holes 5a, 6a are formed at the center of the height H. By providing the crusher provided, the life of one fixed jaw side cutting body 5 or one movable jaw side cutting body 6 can be extended. That is, the mounting screw hole 5 of the fixed jaw side cutting body 5
By making a the center of the height H, the fixed jaw side cut body 5
The fixed jaw side cutting body 5 can be mounted in the same state even if the is reversed in the height direction. Then, the respective corner portions of the fixed jaw side cutting body 5 can be used in order. That is, it can be used until the wear of the four corners progresses.

In the invention of claim 4, the fixed jaw body 2
And the movable jaw body 3 are provided on the crusher outer casing 1 so as to be freely opened and closed, and on the base side of the fixed jaw body 2 and the movable jaw body 3,
The fixed jaw side cutting body mounting portion 7 and the movable jaw side cutting body mounting portion 8 are provided with the fixed jaw side cutting body 5 and the movable jaw side cutting body 6, respectively, and the fixed jaw side cutting body mounting portion 7 and the movable jaw side are provided. The apex of the fixed jaw side cutting part intermediate projection 10 or the movable jaw side cutting part intermediate projection 11 protruding from the cutting corner of the fixed jaw side cutting body 5 or the movable jaw side cutting body 6 on at least one of the cutting body attaching parts 8. Since the crusher is provided at one of the appropriate positions on the surfaces 7b and 8b, only one fixed jaw-side cutting portion intermediate protrusion 10 or movable jaw-side cutting portion intermediate protrusion 11 is provided,
Although the structure is extremely simple, when the crushed object is cut by the fixed jaw side cutting body 5 and the movable jaw side cutting body 6, the crushed object is fixed jaw side cutting part intermediate projection 10 or movable jaw side cutting part. It is possible to cut while fixing with the intermediate protrusion 11.
Other effects are equivalent to those of claims 1 to 3.

In a fifth aspect of the invention, a pair of movable jaw main bodies 3 and 3 are provided in the crusher outer casing 1 so as to be openable and closable, and a movable jaw side cutting body attachment portion 8 is provided on the base side of the movable jaw main body 3. The movable jaw-side cutting body 6 is provided via the movable jaw-side cutting body 6 and the movable jaw-side cutting body intermediate projection 11 projecting from the cutting corner portion of the movable jaw-side cutting body 6 on at least one of the pair of movable-side cutting body mounting portions 8, 8. ，
By using a crushing machine in which a plurality of 11, ... Are provided in the longitudinal direction at appropriate intervals, both movable jaw bodies 3, 3 are movable, and the crushing blades 5, 5 are moved in accordance with the movement of the movable jaw bodies 3, 3. 5 also becomes movable, and by crushing from both sides, the crushing efficiency can be increased by further increasing the crushing force. It is suitable for crushing a relatively large concrete structural material S.

According to a sixth aspect of the present invention, in the fifth aspect, the crusher is provided with movable jaw-side cutting portion intermediate projections 11, 11, ... On both of the pair of movable-side cutting body mounting portions 8, 8. By doing so, it is possible to improve the cutting efficiency of the movable jaw side cutting bodies 6, 6 through the both movable jaw bodies 3, 3.

According to a seventh aspect of the present invention, in the fifth aspect, the movable jaw-side cutting body 6 is an elongated cube, and a mounting screw hole 6a is provided at the center of the height to form a crusher. All four corners of the movable jaw-side cut body 6 can be used, and the life of the movable jaw-side cut body 6 can be extended.

In the eighth aspect of the invention, the pair of movable jaw main bodies 3 and 3 are provided in the crusher outer casing 1 so as to be openable and closable, and the movable jaw side cutting body attachment portion 8 is provided on the base side of the movable jaw main body 3. The movable jaw-side cutting body 6 is provided via the movable jaw-side cutting body 6 and the movable jaw-side cutting body intermediate projection 11 projecting from the cutting corner portion of the movable jaw-side cutting body 6 on at least one of the pair of movable-side cutting body mounting portions 8, 8. Since the crusher is provided at an appropriate place on the top surface 8b of the above, only one movable jaw side cutting portion intermediate protrusion 11 is provided, and the movable jaws have a very simple structure. When the object to be crushed is cut by the side cutting bodies 6 and 6, the object to be crushed can be cut while being fixed by only one movable jaw side cutting part intermediate projection 11. Other effects are equivalent to those of claims 5 to 7.

[Brief description of drawings]

FIG. 1 is a perspective view of a first embodiment of the present invention.

FIG. 2 is an exploded perspective view of a fixed jaw main body portion and a fixed jaw side cutting body of FIG.

FIG. 3 is an exploded perspective view of the movable jaw body portion and the movable jaw-side cut body of FIG.

4A is a cross-sectional view of the fixed jaw main body portion and the movable jaw main body portion of FIG. 1, and FIG. 4B is a perspective view showing a state in which the fixed jaw side cutting body is replaced due to wear or the like.

FIG. 5 (A) is a cross-sectional view showing a state where the fixed jaw side cut body is fixed to the fixed side cut body mounting portion, and (B) shows the fixed jaw after the cutting corner of the fixed jaw side cut body is damaged. Sectional view with the side cut body removed (C) is a cross-sectional view of the state where the fixed jaw side cut body is about to be attached to the fixed side cut body attachment part in order to make a new portion of the cutting corner part of the cut body (D) is a cross-sectional view in which the last one cutting corner portion is attached to the fixed-side cutting body attachment portion as a cutting portion after the three cutting corner portions of the fixed jaw-side cutting body are damaged.

6A is a side view showing a cutting action, and FIG. 6B is an enlarged view of a main part of FIG.

FIG. 7 is a side view of a main part in a state of cutting an object to be cut.

FIG. 8 (A) is a side view showing a partial cross section of a crushed object, and FIG. 8 (B) is a side view showing a partial cross section of a steel frame and a reinforcing bar being cut.

FIG. 9A is a side view of an essential part of a second embodiment of the present invention, and FIG. 9B is a side view of an essential part of a third embodiment of the present invention.

FIG. 10 is a perspective view of a type in which a fixed jaw side cutting part intermediate projection and a movable jaw side cutting part intermediate projection are provided on the fixed jaw body and the movable jaw body, respectively, in the first embodiment of the present invention.

FIG. 11 is a side view showing a fourth embodiment of the present invention.

FIG. 12 is a perspective view of a type in which one movable jaw-side cutting portion intermediate protrusion is provided on each of the movable jaw bodies in the fourth embodiment of the present invention.

FIG. 13A is a side view of a main part of a conventional technique, and FIG. 13B is a perspective view of a conventional cutting body.

FIG. 14 (A) is a cross-sectional view in which a conventional cutting body is attached to a jaw body, and (B) is a cross-sectional view in which a cutting corner portion is replaced because a part of the cutting body is damaged.

FIG. 15 (A) is a state diagram in which a rebar is being cut by a conventional cutting body, (B) is an enlarged view of a main part of (A), and (C) is a conventional cutting body having a rectangular cross section. Enlarged view of the main part showing the state where the cutting load is dispersed when cutting

[Explanation of symbols]

 1 ... Crusher outer casing 2 ... Fixed jaw body 3 ... Movable jaw body 5 ... Fixed jaw side cutting body 5a, 6a ... Mounting screw hole 6 ... Movable jaw side cutting body 7 ... Fixed side cutting body mounting part 8 ... Movable side cutting Body attachment part 10 ... Fixed jaw side cutting part intermediate protrusion 11 ... Movable jaw side cutting part intermediate protrusion H ... Height

Front page continuation (72) Inventor Masayuki Sakado, 314 Chikusacho, Hanamigawa-ku, Chiba City, Sakado Works Co., Ltd. (72) Inventor, Masao Nakata, 314, Chikusacho, Hanamigawa-ku, Chiba City, Inc. (72) Inventor, Miura Suehachi 14-156-1 Sakuragicho, Wakaba-ku, Chiba

Claims (8)

[Claims] 1. A fixed jaw main body and a movable jaw main body are provided in a crusher outer casing so as to be openable and closable, and a fixed jaw side cutting body attachment portion and a movable jaw side are provided on a base side of the fixed jaw main body and the movable jaw main body. A fixed jaw side cutting body and a movable jaw side cutting body are respectively provided through the cutting body attaching section, and at least one of the fixed jaw side cutting body attaching section and the movable jaw side cutting body attaching section has a fixed jaw side cutting body or a movable jaw. A crushing machine comprising a plurality of fixed jaw-side cutting portion intermediate projections or movable jaw-side cutting portion intermediate projections protruding from the cutting corner portion of the side cutting body and provided in the longitudinal direction at appropriate intervals. 2. The crusher according to claim 1, wherein both the fixed jaw-side cutting portion intermediate projection and the movable jaw-side cutting portion intermediate projection are provided. 3. The crusher according to claim 1, wherein the fixed jaw-side cut body or the movable jaw-side cut body is an elongated cube, and a mounting screw hole thereof is provided at the center of height. 4. The fixed jaw main body and the movable jaw main body are provided on the outer casing of the crusher so as to be openable and closable, and the fixed jaw side cutting body attachment portion and the movable jaw side are provided on the base side of the fixed jaw main body and the movable jaw main body. A fixed jaw side cutting body and a movable jaw side cutting body are respectively provided through the cutting body attaching section, and at least one of the fixed jaw side cutting body attaching section and the movable jaw side cutting body attaching section has a fixed jaw side cutting body or a movable jaw. A crusher, characterized in that one is provided at an appropriate position on the top surface of the fixed jaw side cutting part intermediate projection or the movable jaw side cutting part intermediate projection protruding from the cutting corner of the side cutting body. 5. A pair of movable jaw bodies are provided on the outer casing of the crusher so as to be openable and closable, and a movable jaw side cutting body is provided on the base side of the movable jaw body via a movable jaw side cutting body mounting portion. A plurality of movable jaw-side cutting portion intermediate projections projecting beyond the cutting corners of the movable jaw-side cutting body are provided in at least one of the movable-side cutting body attachment portions in the longitudinal direction at appropriate intervals. A crusher that does. 6. The crusher according to claim 5, wherein a movable jaw side cutting portion intermediate projection is provided on both of the pair of movable side cutting body attaching portions. 7. The crusher according to claim 5, wherein the movable jaw-side cutting body is an elongated cube, and a mounting screw hole thereof is provided at the center of height. 8. A pair of movable jaw bodies is provided on the outer casing of the crusher so as to be openable and closable, and a movable jaw side cut body is provided on the base side of the movable jaw body via a movable jaw side cut body mounting portion. At least one of the movable-side cutting body attachment portions is provided at an appropriate position on the top surface of the movable-jaw-side cutting portion intermediate protrusion protruding from the cutting corner portion of the movable-jaw side cutting body. Crushing machine.