JPH083605Y2 - Crushing machine - Google Patents

Description

[Detailed description of the device]

[0001]

[Industrial application] The present invention relates to a crusher capable of crushing concrete structures, etc. and performing large-division work and small-division work at the time of crushing, and in particular, crushing with an improved tooth structure for crushing objects. Regarding the machine.

[0002]

2. Description of the Related Art Applicants have previously applied for a crusher having a high crushing efficiency in Japanese Patent Application No. 3-2038.
Proposed as No. 7. This crusher is a device that crushes an object by engaging a fixed jaw and a movable jaw,
The shape of the fang member formed on the tip of the movable jaw is formed such that the crushing part of the tip part is formed thinner than the fang member main body, and the side surface shape of the crushing part draws an arc. The cross-sectional shape of the edge is also shaped so as to draw a substantially arc. By configuring the fang member in this way, the fang member comes into contact with the crushing target in a state close to point contact, and the pressure contact force by the tusks member concentrates on the crushing target, making the crushing target relatively small. It is possible to destroy it powerfully.

Conventionally, a crusher is a large crusher for directly crushing an object and crushing a crushed object into relatively large pieces, and a small crusher for crushing large pieces crushed by the large crusher into smaller pieces. Is used. In the above-mentioned crusher, the teeth for performing the small division, that is, the teeth arranged at the back of the fang member have the conventional structure. For this reason, I was a little dissatisfied with the ability at the subdivision stage.

[0004]

DISCLOSURE OF THE INVENTION The present invention is constructed in view of the above points, and relates to the improvement of the crusher previously proposed by the applicants, etc., with respect to the fixed jaws connected to the main body. Open and close
Crush the object by opening and closing the movable jaw that is possible
And a fang member is installed at the tip of the movable jaw.
In addition, the side and cross-sectional shapes of the tip of the fang member are substantially arcs.
By engaging a pair of jaws configured to
Assuming that the device is for crushing objects
The material is configured to hang from the base toward the tip,
The vertical tip has a side surface and a cross-sectional shape that are substantially arcuate.
And a split tooth is provided subsequent to the fang member.
The split teeth are configured so that their side surfaces form a substantially circular arc and fracture.
It is formed thin toward the tip of the part, and the tip also has a cross-sectional shape.
It forms a substantially circular arc, and the tip of the fixed jaw is used when closing the movable jaw.
Through the space where the fang member of the movable jaw is located
The body is placed almost parallel and the fixed jaw that follows the protrusion is
An opening is formed on the crushing surface, which is a flat surface, to close the movable jaw.
At the time of bending, the tip of the fang member partially projects to the lower surface of the fixed jaw,
And the split tooth is designed so that its tip is located in this opening.
When it is formed, it breaks due to the engagement between the fang member and the projection.
The object to be crushed is divided into large pieces, and the small pieces are divided into smaller pieces by engaging the openings.
It is a crusher characterized by splitting .

[0005]

By engaging a pair of jaws, the object to be crushed is crushed mainly by the fang member, and the crushed large fragment is further crushed into smaller fragments by the other teeth arranged deeper than the fang member. In this case, the fang member and the teeth behind the fang member make almost point contact with the crushing target, so the pressure contact force of the fang member and the tooth generated by engaging the jaws concentrates on the tip end of the crushing member, and the crushing target is effectively To crush.

[0006]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENT An embodiment of the present invention will be specifically described below with reference to the drawings.

FIG. 1 is a first embodiment of the present invention and shows the structure of a crusher having a fixed jaw and a movable jaw. In the figure, reference numeral 1 is a crusher main body, and a fixed jaw 2 is integrally formed on the crusher main body 1. A movable jaw 3 is attached to the crusher main body 1 so as to be rotatable about a shaft 4, and is configured to be opened and closed by a driving hydraulic cylinder 5. A pair of fang members 6 are attached to the tip of the movable jaw 3 by a strong fixing means such as welding (see also FIG. 4).

This fang member 6 has a tip 6a from a base 6b.
The whole shape is drooped in a claw shape so that it can be lowered.
And as shown in FIG. 2, the base portion 6b is thickly formed.
Both are formed so as to gradually become thinner toward the tip 6a.
Has been . Further, the side surface shape near the tip portion 6a is formed so that the tip portion 6a of the crushing portion draws an arc as shown in FIG.

Next, reference numeral 7 is movable following the fang member 6.
A pair of split teeth arranged on the jaw 3 . The base portion 7b of the split tooth 7 is also formed thick (see FIG. 3), and the tip 7a of the crushing portion is formed.
The taper is gradually thinned toward the. The side surface of the tip 7a of the crushing portion is formed so as to draw a circular arc as shown in FIG. 1, and its cross-sectional shape is also formed in a substantially circular arc like the fang member 6. The pair of split teeth 7 thus formed are arranged and fixed to the movable jaw 3 so as to follow the fang member 6 as shown in FIG.

Next, the structure of the fixed jaw will be described. As shown in FIG. 5, three protrusions 8 are arranged and fixed in parallel to the tip of the fixed jaw 2, and a space 1 is provided between these protrusions 8.
1 and 11 are formed. The fang member 6 is the side surface as described above.
Since it is formed in a substantially claw shape, the fang member 6 on the movable jaw 3 side
Is located in this space 11 when the movable jaw 3 is closed, and its tip 6a partially projects to the back surface of the fixed jaw 2.
It is configured to (see FIG. 1).

Numeral 9 is an opening formed in each crushing surface of the fixed jaw 2, and when the movable jaw 3 is closed, the tips 7a of the respective split teeth 7 are located substantially in the center of the opening 9.
Are formed at predetermined positions on the fixed jaw 2 . In the illustrated configuration, the bases of the fixed jaw 2 and the movable jaw 3 are provided with blades 10a, 10a for cutting metal materials such as reinforcing bars.
b are attached respectively.

6 and 7 show another structure of the projecting body.
The protrusion 12 has an upper end edge 12a facing the fang member 6.
The side part shape of the is drawn in an arc shape so as to project to the fang member 6 side.
The upper edge 12 is formed as shown in FIG.
It is formed so that it gradually becomes thinner toward a.
The edge 12 has a substantially arcuate cross section.

In crushing a crushing object such as a reinforced concrete structure in the apparatus having the above-described structure, first, the movable jaw 3 that has been opened is closed so that the crushing object is the fang member 6 and the protrusions 8 (12). Because of the sandwiched state, the fang member 6 is pressed against the object, and the pressing force is such that the tip 6a of the crushed portion of the fang member 6 has both a side shape and a cross-sectional shape.
Since it is formed in a substantially arc shape, the tip 6 of this crushing portion
concentrate on a. Further, by closing the movable jaw 3, a crushing pair
The pressing force of the crushing portion tip 6a acts on the elephant intensively,
The object to be crushed is crushed with relatively little force. Also finally
By completely closing the movable jaw, the tip 6a of the fang member 6 is
A part of the fixed jaw 2 is projected on the back surface of the fixed jaw 2.
Therefore, even if the crushing target contains rebar, this meshing
If the rebar is or is not sheared due to
Even at least the rebar can be bent so rebar
Regardless of the presence or absence of crushing, it is possible to easily and completely crush the crushing target.

In the above case, if the projection engaging with the fang member 6 is shaped like the projection 12 shown in FIGS. 6 and 7,
The reaction force of the projecting body 12 against the pressing force of the fang member 6 is also concentrated on the specific portion of the crushing target, so that the crushing of the target object becomes easier.

Next, the crushed pieces of a relatively large lump produced by the crushing work mainly performed by the engagement between the fang member 6 and the projection 8 (12) are again crushed by the crusher.
That is, the crusher carries out the crushing work by engaging the crushing teeth of the fixed jaw 2 with the crushing teeth 7 arranged on the movable jaw 3 by biting the crushed pieces of the large lump. More specifically, when the movable jaw 3 is closed, the split teeth 7 come into pressure contact with the largely broken pieces. In this case, the split teeth 7 are formed so that their crushing tips draw an arc as described above. Therefore, as in the case of the fang member 6, its pressure contact force acts intensively on the crushing target,
Crush easily.

An opening 9 is formed in the fixed jaw 2 at a position facing the split tooth 7 and is small when the movable jaw 3 is closed.
The tip 7a of the split tooth 7 enters into this opening 9 and
Since it is configured to be located almost in the center of 9,
While the object is supported by the periphery of the opening 9 ,
The pressing force of the split teeth 7 is concentrated in the centrally located part
It will act on the
It is crushed (split) . A part of the small pieces thus crushed is pushed out by the split teeth 7 and discharged through the opening 9 to the outside without being clogged . In this case, by closing the movable jaw 3 further, the opening 9 is not formed.
The remaining flat surface is crushed even on the outer flat surface.
It is also possible to break the pieces into smaller pieces.

In any of the above-mentioned crushers, the shaft 4, the shaft 17, the shaft 18, and the bearing portions supporting these shafts have abrasion resistance and a friction coefficient. By forming the coating with a small amount of material, it is possible to improve the operation of the device and to make it oil-free. Incidentally, as these materials, materials mainly composed of graphite and molybdenum disulfide, polytetrafluoroethylene (PTFE) and the like are effective.

[0018]

As described in detail above, according to the present invention, both the tooth member formed at the tip of the jaw and the split tooth placed deep in the tooth member have a substantially arcuate side surface and cross-sectional shape. Since it is formed so as to make it possible to apply the pressure contact force by closing the jaws to the target object not only during the large splitting work with the fangs but also during the small splitting work with the split teeth. The object can be easily crushed with a small force, and the efficiency of the large-division work and the small-division work can be improved.

[0019] Further , even if an object containing rebar is crushed,
These rebars are targeted by shearing and bending
You can make sure that it doesn't interfere with the bulk of things,
Moreover, by adjusting the closing of the movable jaw
It is also possible to adjust the size of the fragments.

[Brief description of drawings]

FIG. 1 is a side view of a crusher showing a first embodiment of the present invention.

FIG. 2 is a sectional view taken along the line DD of FIG.

FIG. 3 is a sectional view taken along line CC of FIG. 1;

FIG. 4 is a view from the direction A in FIG.

FIG. 5 is a view from the direction B in FIG.

FIG. 6 is a partial view of a fixed jaw tip according to another embodiment of the present invention.

7 is a cross-sectional view taken along the line EE of FIG.

[Explanation of symbols]

 1 Crusher main body 2 Fixed jaw 3 Movable jaw 5 Hydraulic cylinder 6 Fang member 6a Fang member tip 7 Split tooth 7a Split tooth tip 7b Split tooth base 8 Projection 9 Opening 11 Space 12 Projection

Claims (2)

[Scope of utility model registration request] 1. A movable jaw is attached to a fixed jaw forming a part of a main body, and a fang member is provided at a tip of the movable jaw.
In addition, the fang member 6 is configured to have a base 6b when the side surface shape and the cross-sectional shape of the fang member tip are substantially arcuate .
It is configured to droop toward the tip from the
The side surface shape and the cross-sectional shape are configured to form a substantially arc,
Substituting teeth 7 are provided following the fang member 6,
Numeral 7 is configured so that the side surface forms a substantially circular arc and the tip of the crushing portion
It is formed thin toward the end 7a, and the tip portion 7a has a cross section.
The shape also forms a substantially arc, and the movable jaw 3 is closed at the tip of the fixed jaw 2.
Space part 1 in which the fang member 6 of the movable jaw 3 is located at the time of adjustment
1, a plurality of projecting bodies 8 are arranged substantially parallel to each other,
An opening 9 is provided on the crushing surface which is the flat surface of the fixed jaw following the body 8.
The tip of the fang member 6 is formed when the movable jaw 3 is closed.
6a partially protrudes from the back surface of the fixed jaw 2, and the split teeth 7
The tip portion 7a is configured to be located in the opening 9.
Crushed by the engagement between the fang member 6 and the protrusion 8
By dividing the object into large pieces and engaging the split teeth 7 and the opening 9
A crusher characterized by being configured to divide into small pieces . 2. A movable jaw is attached to a fixed jaw forming a part of a main body, and a fang member is provided at the tip of the movable jaw.
In addition, the fang member 6 is configured to have a base 6b when the side surface shape and the cross-sectional shape of the fang member tip are substantially arcuate .
It is configured to droop toward the tip from the
The side surface shape and the cross-sectional shape are configured to form a substantially arc,
Substituting teeth 7 are provided following the fang member 6,
Numeral 7 is configured so that the side surface forms a substantially circular arc and the tip of the crushing portion
It is formed thin toward the end 7a, and the tip portion 7a has a cross section.
The shape also forms a substantially arc, and the movable jaw 3 is closed at the tip of the fixed jaw 2.
Space part 1 in which the fang member 6 of the movable jaw 3 is located at the time of adjustment
1, a plurality of protrusions 12 are arranged substantially parallel to each other.
A side surface shape of an end edge portion 12a of 12 facing the fang member 6
And a crusher characterized by having a cross-sectional shape of a substantially circular arc .