JP3027938U - Crushing machine - Google Patents

Abstract

(57) [Abstract] [Problem] Cutting of steel beam members, reinforced concrete walls, etc. for the purpose of dismantling structures such as steel frames and reinforced concrete,
In the crushing work, the cutting efficiency is improved for the fixed jaw side movable body or the movable jaw side cut body, the life is extended and the crushing performance of reinforced concrete is excellent, and the damage of the fixed jaw side cut body or the movable jaw side cut body is minimized. To do. SOLUTION: A fixed jaw main body 2 and a movable jaw main body 3 are provided in a crusher outer casing 1 so as to be freely opened and closed, and a fixed jaw side cutting body attachment portion 7 and a movable portion are provided on a base side of the fixed jaw main body 2 and the movable jaw main body 3. The fixed jaw-side cut body 5 and the movable jaw-side cut body 6 are provided via the jaw-side cut body attachment portion 8, respectively. At least one of the fixed jaw side cutting body attachment portion 7 and the movable jaw side cutting body attachment portion 8 has a fixed jaw side cutting portion intermediate projection protruding from the cutting corner portion of the fixed jaw side cutting body 5 or the movable jaw side cutting body 6. 10 or a plurality of movable jaw side cutting part intermediate projections 11 are provided in the longitudinal direction at appropriate intervals.

Description

[Detailed description of the device]

[0001]

[Technical field to which the device belongs]

 The present invention aims to dismantle structures such as steel frames or reinforced concrete, and increases the cutting efficiency to fixed jaw side movable bodies or movable jaw side cut bodies when cutting steel beam members or crushing reinforced concrete walls, floors, etc. The present invention also relates to a crusher capable of improving the life of the reinforced concrete and crushing the reinforced concrete, and further minimizing damage to the fixed jaw-side cutting body or the movable jaw-side cutting body.

[0002]

[Prior art]

 In recent years, there are various crushers for cutting reinforced concrete structures (buildings, etc.) such as steel beams or reinforced concrete structures, and crushing crushed objects such as reinforced concrete structures for walls and columns. . At the time of the crushing, cutting work of reinforcing bars or steel frames is also performed. This rebar and steel frame cutting operation is performed by 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 sandwiching action, but depending on the working conditions, the shape and size of the crushed object, the reinforcing steel and steel The cutting efficiency of was sometimes deteriorated.

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 cutting work was sometimes reduced. 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 and the like.

However, in actuality, as shown in FIG. 15 (A), when cutting is performed by holding rebar, the cutting bodies h at that time have different cutting force directions on the crushed object. There is a drawback that the parts are dispersed in various directions, or the cutting force becomes distributed load q, q, ... For the crushed object to perform the cutting work, and the cutting efficiency is reduced [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, and therefore 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. 13 (B), the cutting bodies h having a corrugated cutting blade surface have only one substantially rectangular parallelepiped surface as a 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 and the sharpness becomes poor, the cut body h , H were removed and replaced on the opposite side to make the corners' outside [see FIGS. 14 (A) and 14 (B)]. As described above, in this type, only the two corner portions can be used, and it cannot be said that the cut bodies h have a long life.

[0007]

[Means for Solving the Problems]

 Therefore, as a result of earnest and repeated researches by the inventor to solve the above-mentioned problems, the present invention provides the present invention with a fixed jaw main body and a movable jaw main body that are openable and closable in the outer casing of the crusher. The fixed jaw side cutting body attachment part and the movable jaw side cutting body attachment part are provided on the base side of the jaw body, respectively, and the fixed jaw side cutting body attachment part is provided. And at least one of the movable jaw-side cutting body attachment parts is provided with a fixed jaw-side cutting body intermediate projection or a movable jaw-side cutting body intermediate projection that protrudes beyond the cutting corner of the fixed jaw-side cutting body or the movable jaw-side cutting body. By using a crusher that is installed in the longitudinal direction at multiple intervals, the cutting efficiency of the fixed jaw side movable body or the movable jaw side cut body in the cutting work of steel beam members or crushing work of reinforced concrete walls, floors, etc. And increase the service life of the Excellent crushing over preparative further reinforced concrete mass can minimize the damage to the fixed jaw side cutting member or movable jaw side cutting body is obtained by solving the above problems.

[0008]

[Embodiment of device]

 An embodiment of the present invention will be described below with reference to the drawings. As shown in FIG. 1, the crusher is mainly composed of a crusher outer casing 1, a fixed jaw main body 2 and a movable jaw main body 3. The fixed jaw body 2 is formed on the outer casing 1, and the movable jaw body 3 is opened and closed on the fixed jaw body 2. The movable jaw body 3 is pivotally supported on the crusher outer casing 1 at a substantially middle position.

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 projecting 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 formed so that the inside thereof is hollow or solid [see FIG. 4 (A)]. 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 barrel 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 work surface side of the fixed jaw body 2, a fixed jaw side cut body 5 is provided along the longitudinal direction via a fixed jaw side cut body attachment portion 7 protruding toward the work surface side. Also, on the work surface side of the movable jaw body 3, a movable jaw side cutting body 6 is provided along the longitudinal direction via a movable jaw side cutting body mounting portion 8 protruding toward the working surface side, and the fixed jaw thereof is provided. When the movable jaw 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 with them together in a scissor-like manner, and shearing is performed to remove the object S to be cut such as a reinforcing bar and a beam. It can be cut (see Figure 1, Figure 4, Figure 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. Is hardened. Mounting screw holes 5a 1, 5a 2, 5a 3, 5a 2, ... , 6a, 6a, ... Are provided [see FIG. 5 (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 side cutting body 5 and the movable jaw side cutting body 6 are attached are formed respectively.

As shown in FIGS. 1 to 3 and 6, 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 is attached to the L-shaped grooves 7a, 8a of FIG. 8 via the mounting bolts 9, 9, ..., respectively, the cutting corners and locations on which the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 work are fixed as described above. The jaw-side cut body attaching portion 7 and the movable jaw-side cut body attaching portion 8 are substantially flush with the top surfaces 7b and 8b, and the scissors-like facing surfaces also have the fixed jaw-side cut body attaching portion 7 and the movable jaw. It is configured to be flush with the side surface of the side cut body attaching portion 8 (see FIG. 1).

Further, the tip side of each of the fixed jaw side cutting body attachment portion 7 and the movable jaw side cutting body attachment portion 8 has a cutting corner portion and a position of the fixed jaw side cutting body 5 and the movable jaw side cutting body 6, respectively. Further, the tip projections 7c and 8c are formed higher on the work surface side. The bolt heads of the mounting bolts 9 are housed in the mounting holes 7d, 8d formed in the fixed jaw side cutting body mounting portion 7 and the movable jaw side cutting body mounting portion 8, respectively, so as not to project to the outer surface. Has been done. Further, the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 have three unused cutting corner portions, ..., And, [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. It can be used as a new cutting body for a total of four times by reversing the cross section in the height direction of the body 5 (or the movable jaw side cutting body 6) or reversing it in the longitudinal direction [Fig. 4 (D)]. reference〕.

The fixed jaw-side cutting body attachment portion 7 and the movable jaw-side cutting body attachment portion 8 have top surfaces 7b and 8b on which cutting corners of the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6, respectively. The fixed jaw-side cutting portion intermediate projections 10, 10, ..., which are formed higher than the height of the location, and the movable jaw-side cutting portion intermediate projections 11, 11, ... Are integrally or separately provided at predetermined intervals in their respective longitudinal directions. It is formed on the body (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 their shapes are trapezoidal prisms. Has been formed. Further, although not shown, the shape is not limited as it may be formed in a trapezoidal cylindrical shape.

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. Further, 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 substantially 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 come into contact with each other even when the fixed jaw body 2 and the movable jaw body 3 thus configured are closed. At the rear end (left side in FIG. 1) of the crusher outer casing 1, there is provided a revolving body 15 capable of rotating at an appropriate angle and stopping at that position. It is designed 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 other configurations are the same as those 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, one fixed jaw side cutting part intermediate protrusion 10 or one movable jaw side cutting part intermediate protrusion 11 is provided on at least one of the fixed jaw body 2 and the movable jaw body 3. There are also embodiments in which only one is provided. In FIG. 10, the fixed jaw main body 2 and the movable jaw main body 3 are provided with one fixed jaw-side cutting portion intermediate protrusion 10 and one movable jaw-side cutting portion intermediate protrusion 11, respectively.

Next, as a fourth embodiment, as shown in FIG. 11, it is composed of a pair of movable jaw bodies 3 and 3, and is as shown in the first to third embodiments of the present invention. Instead of the type composed of the fixed jaw main body 2 and the movable jaw main body 3, the fixed jaw main body 2 does not exist, but the movable jaw main body 3 composed of two movable jaw main bodies 3 exists. Both of the movable jaw bodies 3 and 3 are structured to be movable by a single hydraulic cylinder 4. In this way, the movable jaw-side cutting bodies 6, 6 on the base side of the movable jaw bodies 3, 3 are attached to the movable-side cutting body attaching portions 8, 8 at predetermined intervals with the movable jaw-side cutting portion intermediate projections 11, 11, There are multiple ... In addition, in the fourth embodiment, although not shown in particular, there is also a type in which two hydraulic cylinders 4 are mounted and each movable jaw body 3 and 3 is driven via separate hydraulic cylinders 4 and 4. To do.

Next, as a fifth embodiment, although not shown, it is structurally the same as the fourth embodiment, and the movable side cutting body attachment portion 8 of either one of the pair of movable jaw bodies 3 and 3 is provided. , A plurality of movable jaw side cutting part intermediate projections 11, 11, ... Are provided at predetermined intervals.

Further, in the fourth embodiment, there is one in which only one movable jaw-side cutting portion intermediate projection 11 is provided on at least one of both movable jaw bodies 3 and 3. FIG. 12 shows a structure in which one movable jaw-side cutting portion intermediate projection 11 is provided on each of the movable jaw bodies 3 and 3.

[0023]

[Operation] In the present invention, the operation of cutting an object S to be cut such as a reinforcing bar will be described. 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. When it is operated so as to be sandwiched and then sandwiched, the rebar, which is the object S to be cut, acts so as to slide the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6, as shown in FIGS. 6 (A) and 6 (B). And, as shown in FIG. 7, the sliding can be stopped at the fixed jaw side cutting part intermediate projection 10 and the movable jaw side cutting part intermediate projection 11 at appropriate positions, and the cutting can be performed at the base side of rotation. Then, at this time, the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 can always cut the object S to be cut while applying the cutting force of the concentrated load f [see FIG. 6 (B)]. ].

To explain this point in detail, as shown in FIG. 7, in the past, an object S to be cut such as a reinforcing bar stopped at the tip projections 7c and 8c even if it slipped during cutting. In the present invention, the workpiece S is slipped by the fixed jaw-side cutting portion intermediate projection 10 and the movable jaw-side cutting portion intermediate projection 11 on the base side near the rotation side of the movable jaw body 3. It can be stopped and fixed to cut with the fixed jaw side cutting body 5 and the movable jaw side cutting body 6.

Therefore, the distance from the position of the shaft supporting 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 1 of the movable jaw body 3 to the cutting center point 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. 7, since L ₁ <L _2, it is always F ₁ > F ₂ , and the cutting force can be significantly increased compared to the cutting force at the conventional position, and the cutting efficiency can be improved. Can improve.

Next, in the present invention, in order to crush an object C to be crushed such as a concrete structure material, 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 concrete structural material has a relatively small diameter as shown in FIG. 8 (A), it is held by the fixed jaw side cutting body 5 and the movable jaw side cutting body 6. . Then, the concrete is crushed by the fixed jaw side cutting part intermediate projection 10 and the movable jaw side cutting part intermediate projection 11 to cut the inner steel frame [see FIG. 8 (B)].

The operation will be described in detail. When it is operated so as to be sandwiched between the fixed jaw side cutting body 5 and the movable jaw side cutting body 6, 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 portion intermediate protrusion 10 or the movable jaw-side cutting portion intermediate protrusion 11 serves as a crushing protrusion, and the crushed object C can be crushed.

In particular, even in this case, since the cutting blades 12 and 13 existing at the tip are not used, the root side is crushed and the crushing energy is increased. Further, the crushable 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 or the movable jaw-side cutting portion intermediate projection 11 plays a role of crushing, and further, the fixed jaw-side cutting body 5 and the movable jaw-side cutting body 6 are It is also possible to prevent damage to the cutting corners. That is, conventionally, when the crushed object C such as concrete structural material is crushed at the fixed jaw side cutting body 5 and the movable jaw side cutting body 6, the fixed jaw side cutting body 5 and the movable jaw side cutting body 6 are inevitable. Although the cutting corners of, are damaged or damaged, the fixed jaw-side cutting part intermediate projection 10 or the movable jaw-side cutting part intermediate projection 11 receives most of the breaking reaction force. The damage or damage can be prevented to a negligible extent.

[0030]

[Effect of device]

 In the invention of claim 1, the fixed jaw main body 2 and the movable jaw main body 3 are provided in the crusher outer casing 1 so as to be openable and closable, and the fixed jaw is provided on the base side of the fixed jaw main body 2 and the movable jaw main body 3. The fixed jaw side cutting body 5 and the movable jaw side cutting body 6 are provided through the side cutting body attaching portion 7 and the movable jaw side cutting body attaching portion 8, respectively, and the fixed jaw side cutting body attaching portion 7 and the movable jaw side cutting portion are provided. The fixed jaw side cutting body 5 or the movable jaw side cutting body 6 is provided with a fixed jaw side cutting portion intermediate projection 10 or a movable jaw side cutting portion intermediate projection 11 which is protruded from the corner portion on at least one of the body attaching portions 8 as appropriate. By using the crushing machine having a plurality of crushers provided at intervals in the longitudinal direction, firstly, the cutting efficiency of the object to be cut S such as a reinforcing bar is increased first, and secondly, the object to be crushed C such as a concrete structure material is increased. It is suitable for crushing, and thirdly, fixed jaw side cutting body 5 and movable jaw side cutting body 6 places Even by crushing the crush material C is an effect such as possible out to eliminate most of the damage and damage of the blade.

To describe these effects in detail, conventionally, when the object S to be cut, such as a reinforcing bar, slips at the time of cutting, it stops only at the protrusion of the tip portion of the cutting body, and the cutting is performed here. Therefore, according to the present invention, the fixed jaw side cutting part intermediate projection 10 or the movable jaw on the base side close to the rotating side of the movable jaw body 3 can be obtained. The object S to be cut can be stopped from sliding by any of the side cutting portion intermediate protrusions 11 and can be cut by the fixed jaw side cutting body 5 and the movable jaw side cutting body 6 in a fixed state. 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. Because of this, the cutting force is always a concentrated load f with respect 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 Due to the closing motion of the cutting body, even if the cutting blade surface is slid, it is caught on either part of the fixed jaw-side cutting part intermediate projection 10 or the movable jaw-side cutting part intermediate projection 11 and the object S to be cut is firmly held. The cutting work can be performed while fixing between the two cutting bodies (see Fig. 7).

Next, in the case of crushing a crushed object C such as a concrete structural material containing a steel frame and a reinforcing bar inside, conventionally, in general, the movable jaw body 3 is moved relative to the fixed jaw body 2, Although the crushing blades 12 and 13 are used for crushing, in the present invention, a crushable object such as a concrete structural material is provided by providing the fixed jaw side cutting section intermediate projection 10 or the movable jaw side cutting section intermediate projection 11. When C 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. Is crushed on the root side of the fixed jaw body 2 and the movable jaw body 3, 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 cut. 10 can hit the crushed object C before the fixed jaw side cut body 5 and reduce the load on the fixed jaw side cut body 5, protect the fixed jaw side cut body 5, and pull it to the fixed jaw side. The life of the cut body 5 can be extended. Similarly, since the movable jaw-side cutting portion intermediate projection 11 projects from the cutting blade surface of the movable jaw-side cutting body 6, when the crushed object C is crushed, the movable jaw-side cutting portion intermediate projection 11 is movable. It is possible to reduce the load on the movable jaw-side cutting body 6 by hitting the object to be crushed C before the jaw-side cutting body 6, or to protect the movable jaw-side cutting body 6 and pull the movable jaw-side cutting body 6 The life of the can be extended.

Next, in a second aspect of the invention, the crusher according to the first aspect is provided with both the fixed jaw-side cutting portion intermediate protrusion 10 and the movable jaw-side cutting portion intermediate protrusion 11. Accordingly, 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 object S or the object to be crushed C can be reliably locked by both the fixed jaw-side cutting part intermediate projections 10 and the movable jaw-side cutting part 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 and 6a are located at the center of the height H. By using the crusher formed by boring, the life of one fixed jaw side cutting body 5 or one movable jaw side cutting body 6 can be extended. That is, by setting the mounting screw hole 5a of the fixed jaw side cutting body 5 at the center of the height H, even if the fixed jaw side cutting body 5 is inverted in the height direction, the fixed jaw side cutting body 5 is in the same state. Can be attached to. Then, the respective corners of the fixed jaw-side cutting body 5 can be used in sequence. Immediately, it can be used until the wear of the four corners progresses.

In the invention of claim 4, the fixed jaw main body 2 and the movable jaw main body 3 are provided in the crusher outer casing 1 so as to be openable and closable, and the fixed jaw main body 2 and the movable jaw main body 3 are provided on the base side thereof. , Fixed jaw side cutting body attachment portion 7 and movable jaw side cutting body attachment portion 8 are provided with fixed jaw side cutting body 5 and movable jaw side cutting body 6, respectively, and the fixed jaw side cutting body attachment portion 7 and movable jaw are provided. Cutting of the fixed jaw side cutting body 5 or the movable jaw side cutting body 6 on at least one of the side cutting body attaching portions 8 Fixed jaw side cutting portion intermediate projection 10 or movable jaw side cutting portion intermediate projection 11 protruding from the corner portion 11 By using a crusher that is provided at an appropriate place on the top surfaces 7b and 8b of, the fixed jaw-side cutting portion intermediate projection 10 or the movable jaw-side cutting portion intermediate projection 11 is provided only, Despite the extremely simple structure, the fixed jaw side cutting body 5 and the movable jaw side cutting body When the object to be crushed is cut with the severing body 6, the object to be crushed can be cut while being fixed by the fixed jaw-side cutting portion intermediate projection 10 or the movable jaw-side cutting portion intermediate projection 11. The other effects are the same as those of claims 1 to 3.

According to the invention of claim 5, the pair of movable jaw 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 body 3. The movable jaw-side cutting body 6 is provided through the movable jaw-side cutting body 6, and the movable jaw-side cutting body intermediate projection protruding from at least one of the pair of movable-side cutting body mounting portions 8 and 8 than the cutting corner portion of the movable jaw-side cutting body 6. By using a crusher in which a plurality of 11, 11, ... Are provided at appropriate intervals in the longitudinal direction, both movable jaw bodies 3, 3 are movable, and crushing is performed along with the movement of the movable jaw bodies 3, 3. The blades 5, 5 are also movable, and by crushing from both sides, the crushing power can be increased and the crushing efficiency can be increased. It is suitable for crushing a relatively large concrete structural material S.

According to a sixth aspect of the invention, there is provided a crusher according to the fifth aspect, wherein the movable jaw-side cutting portion intermediate projections 11, 11, ... Are provided on both of the pair of movable-side cutting body attaching portions 8, 8. By doing so, it is possible to improve the cutting efficiency of the movable jaw side cutting bodies 6, 6 through both the 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 formed in the center of the height to provide a crusher. All four corners of the movable jaw-side cutting body 6 can be used, and the life of the movable jaw-side cutting body 6 can be extended.

According to the invention of claim 8, the pair of movable jaw bodies 3 and 3 are provided in the crusher 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 body 3. The movable jaw-side cutting body 6 is provided through the movable jaw-side cutting body 6, and the movable jaw-side cutting body intermediate projection protruding from at least one of the pair of movable-side cutting body mounting portions 8 and 8 than the cutting corner portion of the movable jaw-side cutting body 6. By using a crusher that is provided at an appropriate location on the top surface 8b of 11, a movable jaw side cutting part intermediate projection 11 is provided only, and the structure is extremely simple, but both When the object to be crushed is cut by the movable jaw side cutting bodies 6 and 6, the object to be crushed can be cut while being fixed by only one movable jaw side cutting portion intermediate projection 11. Other effects are the same as in 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. 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 portion intermediate protrusion and a movable jaw-side cutting portion intermediate protrusion are respectively provided on the fixed jaw body and the movable jaw body according to 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 a movable jaw-side cutting portion intermediate projection 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 main body 3 ... Movable jaw main body 5 ... Fixed jaw side cutting body 5a, 6a ... Mounting screw hole 6 ... Movable jaw side cutting body 7 ... Fixed side cutting body mounting portion 7b, 8b ... Top Surface 8 ... Movable cutting body mounting part 10 ... Fixed jaw side cutting part intermediate protrusion 11 ... Movable jaw side cutting part intermediate protrusion H ... Height

Continuation of the front page (72) Masayuki Sakado, 314 Chikusacho, Hanamigawa-ku, Chiba, Sakado Works Co., Ltd. (72) Inventor, Masao Nakata, 314, Chikusacho, Hanamigawa-ku, Chiba (72) Inventor, Miura Suehachi 14-156-1 Sakuragicho, Wakaba-ku, Chiba

Claims (8)

[Scope of utility model registration request] 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. 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 the fixed jaw side cutting body and the movable jaw side cutting body are provided in both the fixed jaw side cutting body attaching section and the movable jaw side cutting body attaching section. A crusher comprising a plurality of fixed jaw-side cutting portion intermediate projections and movable jaw-side cutting portion intermediate projections protruding from the cutting corners of the cutting body and provided in the longitudinal direction at appropriate intervals. 3. 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. The fixed jaw side cutting body or the movable jaw side is provided with a plurality of fixed jaw side cutting section intermediate projections or movable jaw side cutting section intermediate projections protruding from the cutting corner of the side cutting body in the longitudinal direction at appropriate intervals. A crusher characterized in that a 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. 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 protruding from the cutting corners of the movable jaw-side cutting body are provided at appropriate intervals in both of the movable-side cutting body mounting portions in the longitudinal direction. Crushing machine. 7. 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 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 protruding from the cutting corners of the movable jaw-side cutting body are provided in at least one of the movable-side cutting body attaching portions in the longitudinal direction at appropriate intervals, A crusher characterized in that the side cut body is an elongated cube, and a mounting screw hole thereof is provided at the center of the 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.