JP2013034917A - Single shaft shear type crusher - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a single shaft shear type crusher enhancing crushing efficiency of substances to be crushed when a rotary blade and fixed blade cooperate and crush the substances.SOLUTION: In the single shaft shear type crusher 1, boss parts 8e are arranged in shoulder parts 8d of a rotation supporting holder 8 located in blade base 7ab sides of a blade part 7a of a rotary blade 7. The boss parts 8e are formed so as to maintain a distance with a flank 11d including the blade part 11a of the fixed blade 11 adjacent to the blade part 11a of the fixed blade 11 facing the blade part 7a of the rotary blade 7 in a fixed distance along the rotation direction of the rotation supporting holder 8.

Description

  The present invention relates to a uniaxial shearing type crusher that crushes objects to be crushed such as municipal waste and industrial waste.

  2. Description of the Related Art Conventionally, as a uniaxial shearing type crusher that crushes objects to be crushed such as municipal waste and industrial waste, for example, the one shown in FIGS. 22 to 28 (see Patent Document 1) is known. FIG. 22 is a cross-sectional view of a conventional uniaxial shear crusher. FIG. 23 explains the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shearing crusher shown in FIG. 22, and (A) shows when the blade tip of the rotary blade comes on the rake face of the fixed blade. (B) is an enlarged view of a portion indicated by an arrow 23B in (A). FIG. 24 explains the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shearing crusher shown in FIG. 22, and (A) shows the blade base of the rotary blade on the rake face of the fixed blade. (B) is a cross-sectional schematic diagram of the state which rotation of the rotary blade advanced from the state of (A). FIG. 25 is a schematic view seen from the arrow 25-25 in FIG. FIG. 26 is a partial front view of a rotating body used in the uniaxial shearing crusher shown in FIG. 27 is an exploded perspective view of a rotary blade assembly used in the uniaxial shearing crusher shown in FIG. FIG. 28 is a partial plan view of a fixed blade assembly used in the uniaxial shearing crusher shown in FIG.

  A uniaxial shearing crusher 101 shown in FIG. 22 crushes the object to be crushed W and includes a crusher body 102 in which a crushing chamber 103 is formed. A rotating shaft 104 is rotatably provided in the crushing chamber 103 of the crusher body 102. A rotating body 105 that can rotate together with the rotating shaft 104 is provided on the outer periphery of the rotating shaft 104.

  A plurality of rotary blade assemblies 106 are attached to the outer periphery of the rotary body 105 as shown in FIGS. Each rotary blade assembly 106 includes a rotary blade 107 that crushes the object W to be crushed in cooperation with a fixed blade 111 of a fixed blade assembly 110 described later, and a rotary blade support holder 108 that supports the rotary blade 107. ing. As shown in FIG. 26, a plurality of arc-shaped grooves 105a extending in the circumferential direction are formed in parallel on the outer peripheral surface of the rotating body 105 along the axial direction. Each arcuate groove 105 a is provided with a mounting groove 105 b for mounting the rotary blade assembly 106. A plurality of mounting grooves 105b are formed at a predetermined pitch along the circumferential direction, and are formed such that the phases of the mounting grooves 105b adjacent to each other along the axial direction are slightly shifted. Therefore, a plurality of rotary blades 107 of the rotary blade assembly 106 attached to the attachment groove 105b are arranged at a predetermined pitch along the circumferential direction, and the phases of the adjacent rotary blades 107 along the axial direction are the same. It is arranged so that it is shifted little by little.

  As shown in FIG. 27, the rotary blade 107 is formed in a square column shape having a square cross section, and has two ridge lines adjacent to each other in the form of a substantially V-shape among the four ridge lines on the surface, and the remaining substantially V-shape. Two ridge lines adjacent to each other are defined as blade portions 107a. The rotary blade 107 is used by turning over in view of the state of wear of the blade portion 107a, and is formed in a substantially V-shape among the four ridge lines on the back surface thereof and the adjacent two ridge lines and the remaining substantially V-shape. Two adjacent ridge lines are also defined as blade portions 107a.

  As shown in FIG. 27, the rotary blade support holder 108 includes a square block-shaped holder body 108a. A rotary blade housing recess 108b for housing the rotary blade 107 is formed on the front surface side of the holder main body 108a. As shown in FIG. 27, the rotary blade accommodating recess 108b is formed as a V-shaped recess having an angle of 90 degrees and opened upward at the center in the width direction of the holder body 108a. As shown in FIG. 27, the rotary blade 107 is accommodated in the rotary blade housing recess 108b of the rotary blade support holder 108 with the surface 107b side of the rotary blade support holder 108 as the front surface side. The rotary blade 107 is attached to the rotary blade support holder 108 through the attachment hole 108c and the screw hole 107c by the attachment bolt 107d. The rotary blade holder assembly 106 is attached to the mounting groove 105b of the rotator 105 with the mounting blade 107e with the rotary blade 107 on the front side.

Further, as shown in FIG. 22, a fixed blade assembly 110 is provided in the crushing chamber 103 of the crusher body 102. The fixed blade assembly 110 includes a plurality of fixed blades 111 for crushing the object to be crushed W in cooperation with the rotary blade 107 and an attachment seat body 112 to which the fixed blades 111 are attached.
As shown in FIG. 28, the plurality of fixed blades 111 are arranged in the parallel direction (the left-right direction in FIG. 28) and attached to the mounting seat 112. Each fixed blade 111 is formed of a substantially rectangular plate, and includes a plurality of blade portions 111 a formed of two ridge lines adjacent to each other in a substantially V shape facing the blade portion 107 a of the rotary blade 107. A plurality of blade portions 111 a of the fixed blade 111 having a substantially V shape are formed side by side in parallel with one end edge (lower end edge in FIG. 28) of the mounting seat 112.

  As shown in FIGS. 23A and 28, each blade portion 111a is formed on both the front surface (the upper surface in FIG. 23A) and the back surface of the fixed blade 111. When crushing the object W to be crushed, as shown in FIGS. 23 (A) and 23 (B), the blade 111a on the front surface side is used. The blade portion 111a formed on the side is used.

  As shown in FIG. 28, the mounting seat 112 includes a mounting recess 112a for mounting the fixed blade 111 on the front surface side. The fixed blade 111 is attached to the attachment recess 112a so that the blade portion 111a protrudes from the attachment seat body 112. When attaching the fixed blade 111, the protruding amount of the blade portion 111 a is adjusted by the adjusting bolt 114 and the nut 115, and then the fixed blade 111 is attached by the mounting bolt 113 through the long hole 111 e formed in the fixed blade 111. It is fixed to the mounting seat 112 so as to be detachable. Then, as shown in FIG. 23A, the mounting seat 112 is attached to the crusher body 102 so that the blade portion 111a of the fixed blade 111 faces the rotating body 105, whereby the fixed blade assembly 110 is It is attached to the crusher body 102.

  Here, in the fixed blade assembly 110, as shown in FIG. 22, the rake face 111b as the surface of the fixed blade 111 is inclined with respect to the horizontal axis L so as to be lowered forward toward the rotation axis 104 by an angle α. ing. Further, the fixed blade assembly 110 is arranged such that the rake face 111 b of the fixed blade 111 is shifted from the central axis O of the rotation shaft 104 by a distance E. As a result, as shown in FIG. 23A, the rake face that is the front surface of the rotary blade 107 in the rotational direction and the rake face 111b that is the surface of the fixed blade 111 are arranged at a shear angle θ at the start of shearing. ing.

  When crushing the object to be crushed W, the blade portion 107a of the rotary blade 107 moves circularly about the central axis O of the rotary shaft 104, and the rotation locus of the blade edge 107aa of the blade portion 107a is shown in FIG. Thus, C is obtained. On the other hand, each blade part 111a of the fixed blade 111 is formed in a shape in which adjacent V-shaped ridgelines are concave. As shown in FIG. 23A, when the blade edge 107aa of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, as shown in FIG. The blade portion 111a of the fixed blade 111 is formed so that the gap between the blade edge 107aa of the blade portion 107a and the blade portion 111a of the fixed blade 111 is Δ1. And the flank 111d including the blade part 111a of the fixed blade 111 is formed on a close surface as close as possible to the rotation locus surface of the blade part 107a.

And the screen board 109 which has the some discharge hole 109a is installed in the downward position of the rotary body 105 of the crushing machine body 102, as shown in FIG.
In the uniaxial shearing type crusher 101 configured as described above, the object to be crushed W is put into the crushing chamber 103 as shown in FIG. On the other hand, the rotary blade 107 attached to the rotary body 105 is rotating. The charged material W to be crushed is hooked on the blade portion 107 a of the rotating rotary blade 107 and reaches the blade portion 110 a of the fixed blade 110. And if rotation of the blade part 107a of the rotary blade 107 continues, the to-be-crushed object W will rotate in the clearance between the blade part 107a of the rotary blade 107 and the flank 111d including the blade part 111a of the fixed blade 111. It is dragged to 107 blade part 107a. The to-be-crushed object W is crushed by the synergistic effect of the shearing force on the to-be-crushed object W by the relative movement of the rotary blade 107 with respect to the fixed blade 111 and the tensile force to the to-be-crushed object W that drags the to-be-crushed object W in the gap. . Then, the crushed object W is discharged to the outside from the discharge hole 109a of the screen plate 109 below.

Japanese Patent No. 4164811

However, the conventional uniaxial shear crusher 101 shown in FIGS. 22 to 28 has the following problems.
That is, as shown in FIGS. 23A and 23B, when the blade edge 107aa of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, the blade edge 107aa of the blade portion 107a of the rotary blade 107. And the clearance surface 111d including the blade portion 111a of the fixed blade 111 is as small as Δ1.

  Further, the rotation of the rotary blade 107 continues, and the blade base 107ab of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110 as shown in FIG. At this time, as shown in FIG. 25, the gap between the blade edge 107aa of the blade portion 107a of the rotary blade 107 and the flank 111d including the blade portion 111a of the fixed blade 111 is Δ1. Further, the gap between the blade base 107ab of the blade portion 107a of the rotary blade 107 and the flank 111d including the blade portion 111a of the fixed blade 111 is Δ2.

On the other hand, when the blade base 107ab of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, the shoulder portion 108c of the rotary blade support holder 108 and the blade portion of the rotary blade 107 as shown in FIG. There is a very large gap A between Δ1 and Δ2 between the flank 111d including the blade portion 111a adjacent to the blade portion 111a of the fixed blade 111 facing 107a.
Such a large gap A is formed between the shoulder 108c of the rotary blade holder 108 and the flank 111d including the blade 111a adjacent to the blade 111a of the fixed blade 111 facing the blade 107a of the rotary blade 107. If present, the following problems will arise.

  That is, when the rotary blade 107 rotates and collides with the fixed blade 111 to crush the object to be crushed, the object to be crushed W passes through the gap A and is not crushed on the screen plate 109. There was a fall. Thus, the to-be-crushed object W which fell on the screen board 109 without being crushed had to be crushed again by a crusher, and the crushing efficiency was extremely poor. In particular, as the material of the rotary blade support holder 108, relatively soft carbon steel or the like is used in order to facilitate processing. For this reason, if crushing is repeated over a long period of time, the shoulder 108c of the rotary blade holder 108 is worn, and the gap A tends to become larger. When the gap A becomes large, there is a problem that the amount of slipping of the object to be crushed W increases and the crushing efficiency becomes worse.

As shown in FIGS. 22, 23 (A) and 24 (A), the tip of the blade portion 111 a of the fixed blade 111 is formed by a flat surface 111 c along the plate thickness direction of the fixed blade 111.
As described above, when the blade base 107ab of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, as shown in FIG. 25, the blade base 107ab of the blade portion 107a of the rotary blade 107 and the fixed blade The clearance from the flank 111d including the 111 blade portion 111a is Δ2. At this time, the clearance between the blade base 107ab of the blade portion 107a of the rotary blade 107 and the flank 111d including the blade portion 111a of the fixed blade 111, the blade base 107ab of the blade portion 107a of the rotary blade 107, and the blade portion of the fixed blade 111. The gap between the flat surface 111c of 111a is the same, and the gap between the blade base 107ab of the blade portion 107a of the rotary blade 107 and the flat surface 111c of the blade portion 111a of the fixed blade 111 is relatively small. Δ2.

  However, as shown in FIG. 24B, when the rotary blade 107 further rotates and the blade portion 107a of the rotary blade 107 comes to a position intersecting the central portion of the flat surface 111c of the fixed blade 111, the rotary blade 107 As shown in FIG. 24B, the gap between the blade base 107ab of the blade 107a and the flat surface 111c of the blade 111a of the fixed blade 111 (the length along the blade 107a of the rotary blade 107) is Δ2. To Δ3. The clearance between the blade base 107ab of the blade portion 107a of the rotary blade 107 and the flat surface 111c of the blade portion 111a of the fixed blade 111 further increases as the rotation of the rotary blade 107 continues. This is because the tip of the blade portion 111a of the fixed blade 111 is formed as a flat surface.

Until the rotary blade 107 passes through the fixed blade 111, there is no problem if the gap between the blade base 107ab of the blade portion 107a of the rotary blade 107 and the flat surface 111c of the blade portion 111a of the fixed blade 111 remains small. When the gap becomes larger, the rotary blade 107 rotates and cooperates with the fixed blade 111 to crush the object to be crushed W, and the object to be crushed passes through the gap and is not crushed. 109 could fall.
Accordingly, the present invention has been made to solve these conventional problems, and its purpose is to crush the object to be crushed when the rotating blade and the fixed blade cooperate to crush the object to be crushed. An object of the present invention is to provide a uniaxial shearing type crusher with improved performance.

  In order to solve the above problems, a uniaxial shearing type crusher according to an aspect of the present invention includes a crusher body in which a crushing chamber is formed, a rotating shaft rotatably provided in the crushing chamber, A rotary body provided on the outer periphery of the rotary body so as to be rotatable together with the rotary shaft; a rotary blade assembly attached to the outer periphery of the rotary body; and a fixed blade provided in the crushing chamber. A rotary blade that crushes the object to be crushed in cooperation with the fixed blade, and a rotary blade support holder that supports the rotary blade, and the blade portions of the rotary blade are adjacent to each other in a substantially V shape. It consists of two straight ridgelines, and the blade portion of the fixed blade is composed of two ridgelines adjacent to each other in a substantially V shape facing two linear ridgelines as blade portions of the rotary blade, and the fixed blade A uniaxial shear type crusher formed by arranging a plurality of blade parts in parallel, The shoulder portion of the rotating blade support holder located on the blade root side of the blade portion of the rotary blade is characterized in that a protrusion.

Further, in this uniaxial shearing type crusher, a gap between the protruding portion and the flank including the blade portion of the fixed blade adjacent to the blade portion of the fixed blade facing the blade portion of the rotary blade is described above. You may form so that it may hold | maintain at fixed intervals along the rotation direction of a rotary blade support holder.
In the uniaxial shearing type crusher, the rotary blade support holder is formed on a front side in the rotation direction of the holder body, and a rectangular block-shaped holder body extending in the front-rear direction which is the rotation direction and the width direction which is the rotation axis direction. A V-shaped protrusion, and a V-shaped protrusion formed on the rear side in the rotation direction of the rotary blade receiving recess and protruding upward in a V shape from the holder body. The gap between the outer shape including the top line of the portion and the flank including the blade portion of the fixed blade facing the blade portion of the rotary blade is set at a constant interval along the rotation direction of the rotary blade support holder. You may form so that it may hold | maintain.

Further, in this uniaxial shearing type crusher, a sharpened portion is provided at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade, and the sharpened portion is provided between the blade portion of the blade portion of the rotary blade. These gaps may be formed at regular intervals along the rotational direction of the rotary blade.
Further, in this uniaxial shearing type crusher, a clearance between the sharpened portion of the fixed blade and the sharpened portion of the rotary blade supporting holder located on a blade base side of the blade portion of the rotary blade is supported by the rotary blade. You may form the groove | channel hold | maintained at a fixed interval along the rotation direction along the rotation direction of a holder.
In the uniaxial shearing crusher according to this aspect, "holding at a constant interval" means that the expected expansion of the gap is not excessive in design so that the gap is not enlarged as much as possible by the rotation of the rotary blade. It means to replenish with a shape along the rotation to the extent, and it does not matter whether the size of the gap is strictly constant or not constant.

  Furthermore, the uniaxial shearing type crusher according to another aspect of the present invention includes a crusher body in which a crushing chamber is formed, a rotary shaft provided rotatably in the crushing chamber, and the rotation on the outer periphery of the rotary shaft. A rotating body rotatably provided with a shaft; a rotary blade assembly attached to an outer periphery of the rotary body; and a fixed blade provided in the crushing chamber, wherein the rotary blade assembly is the fixed blade A rotary blade for crushing the object to be crushed and a rotary blade support holder for supporting the rotary blade, and the blade portions of the rotary blade are adjacent to each other in a substantially V shape. It consists of two ridge lines that are adjacent to each other in a substantially V-shape, and the blade section of the fixed blade, the blade section of the fixed blade is opposed to two linear ridge lines as the blade section of the rotary blade. A uniaxial shearing type crusher formed by arranging a plurality of the blades in parallel, and A sharpened portion is provided at the tip of the blade portion of the fixed blade, and a gap between the sharpened portion and the blade base of the blade portion of the rotary blade is held at a constant interval along the rotation direction of the rotary blade. It is characterized by being formed as follows.

  In the uniaxial shearing crusher according to this other aspect, “holding at a constant interval” means that the expected expansion of the gap is impossible in design so that the gap is not enlarged as much as possible by the rotation of the rotary blade. It means to replenish with a shape along the rotation to a certain extent, and it does not matter whether the size of the gap is strictly constant or not constant.

  According to the uniaxial shearing crusher according to the present invention, since the protrusion is provided on the shoulder portion of the rotary blade support holder located on the blade base side of the rotary blade, the rotary blade and the fixed blade cooperate with each other. When crushing the object to be crushed, there is a projection between the shoulder of the rotary blade support holder and the flank including the blade adjacent to the blade of the fixed blade facing the blade of the rotary blade. The gap between the shoulder and the flank of the fixed blade is reduced. Thereby, it can prevent that a to-be-crushed object slips through the said clearance gap, and can improve the crushing efficiency of a to-be-crushed object.

  Further, in this uniaxial shearing type crusher, a gap between the protruding portion and the flank including the blade portion of the fixed blade adjacent to the blade portion of the fixed blade facing the blade portion of the rotary blade is described above. If the rotary blade support holder is formed so as to be held at regular intervals along the rotation direction, when the rotary blade and the fixed blade cooperate to crush the object to be crushed, the protrusion of the rotary blade support holder, A gap between the blade portion of the rotary blade and the flank including the blade portion of the fixed blade adjacent to the blade portion of the fixed blade facing the blade portion can be maintained at a constant interval. Thereby, it can prevent that a to-be-crushed object slips through the said clearance gap, and can further improve the crushing efficiency of a to-be-crushed object. When the rotary blade and the fixed blade cooperate to crush the object to be crushed, in the gap between the protrusion of the rotary blade support holder and the flank including the blade portion of the fixed blade that are held at regular intervals, The crushed material is dragged by the protrusion of the rotating rotary blade support holder. In addition to the shearing force on the object to be crushed by the relative movement of the rotary blade with respect to the fixed blade, the object to be crushed in the gap between the protrusion of the rotary blade support holder held at a constant interval and the flank including the blade part of the fixed blade Due to the synergistic effect of the tensile force on the object to be crushed, the efficiency of crushing the object to be crushed is improved.

  Furthermore, in this uniaxial shearing type crusher, the rotary blade support holder is formed on a front side in the rotation direction of the holder body and a rectangular block-shaped holder body extending in the front-rear direction which is the rotation direction and the width direction which is the rotation axis direction A V-shaped protrusion, and a V-shaped protrusion formed on the rear side in the rotation direction of the rotary blade receiving recess and protruding upward in a V shape from the holder body. The gap between the outer shape including the top line of the portion and the flank including the blade portion of the fixed blade facing the blade portion of the rotary blade is set at a constant interval along the rotation direction of the rotary blade support holder. If formed so as to hold, when the rotary blade and the fixed blade cooperate to crush the object to be crushed, the outer shape of the V-shaped projection of the rotary blade support holder that supports the rotary blade and the blade of the rotary blade Clear the gap between the flank and the flank including the fixed blade It can be held to the interval. Thereby, it can prevent that a to-be-crushed object slips through the said clearance gap, and can further improve the crushing efficiency of a to-be-crushed object. When the rotary blade and the fixed blade cooperate to crush the object to be crushed, the outer shape of the V-shaped protrusion of the rotary blade support holder held at a constant interval and the flank including the blade portion of the fixed blade, Even in the gap, the object to be crushed is dragged by the protrusion of the rotating rotary blade support holder. In addition to the shearing force on the object to be crushed by the relative movement of the rotary blade with respect to the fixed blade, the outer shape of the V-shaped projection of the rotary blade support holder held at a constant interval and the flank including the blade portion of the fixed blade The crushing efficiency of the material to be crushed is improved by the synergistic effect of the tensile force on the material to be crushed that drags the material to be crushed in the gap.

  Further, in this uniaxial shearing type crusher, a sharpened portion is provided at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade, and the sharpened portion is provided between the blade portion of the blade portion of the rotary blade. If the gap between the rotary blade and the stationary blade collaborates to crush the object to be crushed, the gap between the rotary blade and the stationary blade A gap between the blade base and the sharpened portion provided at the tip of the blade portion of the fixed blade can be maintained at a constant interval. Thereby, it can prevent that a to-be-crushed object slips through the clearance gap between the front-end | tip of a blade part of a fixed blade, and a rotary blade, and can further improve the crushing efficiency of a to-be-crushed object. When the rotary blade and the fixed blade cooperate to crush the object to be crushed, even in the gap between the blade base of the rotary blade and the sharp edge of the fixed blade held at a constant interval, The object to be crushed is dragged by the blade part of the rotating rotary blade. In addition to the shearing force on the object to be crushed by the relative movement of the rotary blade to the fixed blade, the object to be crushed in the gap between the blade base of the rotary blade and the sharp edge of the fixed blade held at a constant interval Due to the synergistic effect of the tensile force on the object to be crushed, the efficiency of crushing the object to be crushed is improved.

  Furthermore, in this uniaxial shearing type crusher, a clearance between the sharpened portion of the fixed blade is formed on the shoulder of the rotary blade support holder located on the blade base side of the blade portion of the rotary blade. If grooves that are held at regular intervals along the rotation direction are formed along the rotation direction, when the rotary blade and the fixed blade cooperate to crush the object to be crushed, the blade base side of the blade portion of the rotary blade The gap between the groove formed in the shoulder portion of the rotary blade support holder located at the tip and the sharpened portion provided at the tip of the blade portion of the fixed blade can be made constant. It is possible to prevent slipping through the gap and further improve the crushing efficiency of the object to be crushed. When the rotating blade and the fixed blade cooperate to crush the object to be crushed, it is formed on the shoulder of the rotating blade support holder located on the blade base side of the blade portion of the rotating blade held at a constant interval. Even in the gap between the groove and the sharpened edge of the fixed blade, the object to be crushed is dragged by the groove formed in the rotating rotary blade support holder. Grooves formed in the shoulder of the rotary blade support holder located on the blade base side of the blade portion of the rotary blade held at a constant interval in addition to the shearing force on the object to be crushed by the relative movement of the rotary blade to the fixed blade The crushing efficiency of the object to be crushed is improved by the synergistic effect of the tensile force on the object to be crushed that drags the object to be crushed in the gap between the blade and the sharp part of the fixed blade.

  Moreover, according to the uniaxial shearing type crusher according to the present invention, a sharpened portion is provided at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade, and the sharpened portion is used as a blade base of the blade portion of the rotary blade. The gap between the blades of the rotary blade is formed so as to be held at a constant interval along the rotational direction of the rotary blade, so that when the rotary blade and the fixed blade cooperate to crush the object to be crushed, the blade portion of the rotary blade The gap between the blade base and the sharpened portion provided at the tip of the blade portion of the fixed blade can be made constant. Thereby, it can prevent that a to-be-crushed object slips through the said clearance gap, and can further improve the crushing efficiency of a to-be-crushed object. When the rotary blade and the fixed blade cooperate to crush the object to be crushed, even in the gap between the blade base of the rotary blade and the sharp edge of the fixed blade held at a constant interval, The object to be crushed is dragged by the blade part of the rotating rotary blade. In addition to the shearing force on the object to be crushed by the relative movement of the rotary blade to the fixed blade, the object to be crushed in the gap between the blade base of the rotary blade and the sharp edge of the fixed blade held at a constant interval Due to the synergistic effect of the tensile force on the object to be crushed, the efficiency of crushing the object to be crushed is improved.

It is sectional drawing of the uniaxial shearing type crusher which concerns on embodiment of this invention. FIG. 2 explains the cooperative relationship between a rotary blade and a fixed blade in the uniaxial shearing crusher shown in FIG. 1, and (A) is a cross-section when the blade tip of the rotary blade comes on the rake face of the fixed blade. Schematic diagram, (B) is an enlarged view of the portion indicated by arrow 2B in (A). FIG. 2 is a cross-sectional schematic diagram illustrating a cooperative relationship between a rotary blade and a fixed blade in the uniaxial shearing crusher shown in FIG. 1 when the blade tip of the rotary blade comes to the apex of the fixed blade flank. is there. FIG. 2 is a cross-sectional schematic diagram illustrating a cooperative relationship between a rotary blade and a fixed blade in the uniaxial shearing crusher shown in FIG. 1 when the blade portion of the rotary blade comes on the rake face of the fixed blade. is there. It is the schematic diagram seen from the arrow 5-5 in FIG. FIG. 2 is a cross-sectional schematic diagram illustrating the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shearing crusher shown in FIG. 1 when the blade tip of the rotary blade comes on the rake face on the back side of the fixed blade. It is. FIG. 2 is a schematic cross-sectional view of a state after the rotary blade has passed through the fixed blade, illustrating the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shear crusher shown in FIG. 1. The rotary body used for the uniaxial shearing type crusher shown in FIG. 1 is shown, (A) is a partial front schematic diagram of a rotary body, (B) is sectional drawing which follows the 8B-8B line in (A). It is a disassembled perspective view of the rotary blade assembly used for the uniaxial shear type crusher shown in FIG. The rotary blade support holder which comprises a rotary blade assembly is shown, (A) is a top view, (B) is a front view, (C) is a left view. The rotary blade support holder which comprises a rotary blade assembly is shown, (A) is sectional drawing which follows the 11A-11A line in FIG. 10 (A), (B) is the cross section which follows the 11B-11B line in FIG. 10 (A). FIG. 10C is a view seen from the direction of the arrow 11C-11C in FIG. It is a fragmentary top view of the fixed blade assembly used for the uniaxial shear type crusher shown in FIG. It is a perspective view of the center fixed blade which comprises a fixed blade assembly. The center fixed blade shown in FIG. 13 is shown, (A) is a top view, (B) is a front view. The center fixed blade shown in FIG. 13 is shown, (A) is a right side view, (B) is a left side view, and (C) is a rear view. It is a perspective view of the right side fixed blade which comprises a fixed blade assembly. The right side fixed blade shown in FIG. 16 is shown, (A) is a top view, (B) is a front view. The right fixed blade shown in FIG. 16 is shown, (A) is a right side view, (B) is a left side view, and (C) is a rear view. It is a perspective view of the left side fixed blade which comprises a fixed blade assembly. The left fixed blade shown in FIG. 19 is shown, (A) is a plan view, and (B) is a front view. The left fixed blade shown in FIG. 19 is shown, (A) is a right side view, (B) is a left side view, and (C) is a rear view. It is sectional drawing of the uniaxial shearing type crusher of a prior art example. FIG. 22 is a diagram for explaining the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shearing crusher shown in FIG. 22, and (A) is a cross-section of the state when the blade tip of the rotary blade comes on the rake face of the fixed blade. Schematic (B) is an enlarged view of a portion indicated by arrow 23B in (A). FIG. 22 illustrates the cooperative relationship between the rotary blade and the fixed blade in the uniaxial shearing crusher shown in FIG. 22, and (A) shows the state when the blade base of the rotary blade comes on the rake face of the fixed blade. Cross-sectional schematic diagram, (B) is a schematic cross-sectional diagram of the state in which the rotation of the rotary blade has progressed from the state of (A). It is the schematic diagram seen from the arrow 25-25 in FIG. It is a partial front view of the rotary body used for the uniaxial shearing type crusher shown in FIG. It is a disassembled perspective view of the rotary blade assembly used for the uniaxial shear type crusher shown in FIG. It is a fragmentary top view of the fixed blade assembly used for the uniaxial shear type crusher shown in FIG.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
A uniaxial shearing crusher 1 shown in FIG. 1 crushes an object W to be crushed and includes a crusher body 2 in which a crushing chamber 3 is formed. A rotating shaft 4 is rotatably provided in the crushing chamber 3 of the crushing machine body 2. A rotating body 5 that can rotate together with the rotating shaft 4 is provided on the outer periphery of the rotating shaft 4.

  As shown in FIGS. 1 and 8, a plurality of rotary blade assemblies 6 are attached to the outer periphery of the rotary body 5. Each rotary blade assembly 6 includes a rotary blade 7 for crushing an object W to be crushed in cooperation with a fixed blade 11 of a fixed blade assembly 10 to be described later, and a rotary blade support holder 8 for supporting the rotary blade 7. ing. As shown in FIGS. 8A and 8B, a plurality of arc-shaped grooves 5 a extending in the circumferential direction are formed in parallel along the axial direction on the outer peripheral surface of the rotating body 5. Each arcuate groove 5 a is provided with a mounting groove 5 b for mounting the rotary blade assembly 6. A plurality of mounting grooves 5b are formed at a predetermined pitch along the circumferential direction, and are formed such that the phases of the mounting grooves 5b adjacent to each other along the axial direction are slightly shifted. Therefore, a plurality of rotary blades 7 of the rotary blade assembly 6 attached to the attachment groove 5b are arranged at a predetermined pitch along the circumferential direction, and the phases of the adjacent rotary blades 7 along the axial direction are the same. It is arranged so that it is slightly shifted.

  As shown in FIG. 9, the rotary blade 7 is formed in a square column shape having a square cross section, and the two ridge lines adjacent to each other in the form of a substantially V-shape among the four ridge lines of the surface 7 b and the remaining substantially V-shape. Two ridge lines that are adjacent to each other are formed as blade portions 7a. The rotary blade 7 is used by turning over in view of the state of wear of the blade portion 7a, and is formed in a substantially V-shape among the four ridge lines on the back surface thereof and the two adjacent ridge lines and the remaining substantially V-shape. Two adjacent ridgelines are also defined as blade portions 7a. As a material of the rotary blade 7, for example, a cemented carbide is used.

  As shown in FIGS. 2 and 9, the rotary blade support holder 8 includes a rectangular block-shaped holder body 8 a extending in the front-rear direction that is the rotation direction and the width direction that is the rotation axis direction. A rotary blade housing recess 8b for housing the rotary blade 7 is formed on the front side in the rotational direction of the holder body 8a. As shown in FIGS. 9 and 10B, the rotary blade accommodating recess 8b is recessed in a V shape having an angle of 90 degrees opened upward at the center in the width direction of the holder body 8a. And the V-shaped protrusion part 8c which protrudes in a V shape from the holder main body 8a is provided in the rotation direction rear side of the rotary blade accommodation recessed part 8b of the holder main body 8a. The shape of the V-shaped protrusion 8c will be described in detail later. The holder main body 8a is formed with a pair of shoulder portions 8d extending in the front-rear direction from both sides in the width direction of the rotary blade accommodating recess 8b to both sides in the width direction of the V-shaped protrusion 8c. Each shoulder portion 8d is located on the blade base 7ab side of the blade portion 7a of the rotary blade 7 when the rotary blade 7 is received in the rotary blade receiving recess 8b. Each shoulder 8d is provided with a protrusion 8e and a groove 8f. The protrusion 8e and the groove 8f will be described in detail later. As a material of the rotary blade support holder 8, for example, low alloy steel having excellent wear resistance is used.

  As shown in FIG. 9, the rotary blade 7 is accommodated in the rotary blade receiving recess 8b of the rotary blade support holder 8 with the front surface 7b side being the front side. The rotary blade 7 is attached to the rotary blade support holder 8 through the attachment hole 8j and the screw hole 7c by the attachment bolt 7d. At this time, the rotary blade 7 is attached so that the blade edge 7aa of the blade portion 7a is on the upper side and the blade base 7ab of the blade portion 7a is on the lower side. The rotary blade assembly 6 is attached to the mounting groove 5b of the rotary body 5 with the mounting blade 7e through the mounting hole 8i formed in the rotary blade support holder 8 with the rotary blade 7 in front.

Further, a fixed blade assembly 10 is provided in the crushing chamber 3 of the crushing machine body 2 as shown in FIG. The fixed blade assembly 10 includes a plurality of fixed blades 11 for crushing the object to be crushed W in cooperation with the rotary blade 7 and a mounting seat 12 to which the fixed blades 11 are attached.
As shown in FIG. 12, the plurality of fixed blades 11 are arranged in parallel and attached to the attachment seat body 12. Specifically, the central fixed blade 11 shown in FIGS. 13 to 15, the right fixed blade 11 shown in FIGS. 16 to 18 disposed on the right side of the central fixed blade 11, and the central fixed blade The left fixed blade 11 shown in FIG. 19 to FIG. 21 disposed on the left side of 11 is arranged in parallel and attached to the mounting seat 12.

  Since the basic configuration and the basic shape of the fixed blades 11 at the center, the right side, and the left side are the same, only the configuration of the central fixed blade 11 shown in FIGS. 13 to 15 will be described. As shown in FIGS. 13 to 15, the central fixed blade 11 is formed of a substantially rectangular plate, and includes a plurality of adjacent ridgelines that form a substantially V shape facing the blade portion 7 a of the rotary blade 7. The blade part 11a is provided. The blade portion 11a is formed on both the front surface (rake surface 11b) and the back surface of the fixed blade 11, as shown in FIGS. 14B, 15A, and 15B. A plurality of blade portions 11a are formed side by side along one edge of the fixed blade 11 (lower edge in FIG. 12). Further, flank surfaces 11 d extending toward the center in the plate thickness direction of the fixed blade 11 are formed from the blade portions 11 a formed on the front and back surfaces of the fixed blade 11. The shape of each flank 11d will be described in detail later. A sharpened portion 11 c is formed at the tip of the blade portion 11 a formed on the front and back surfaces of the fixed blade 11. The shape of the sharpened portion 11c will also be described in detail later. When crushing the object W to be crushed, as shown in FIG. 1, the blade portion 11a on the front surface side is used. However, the blade portion 11a is used by turning over to see the wear state of the blade portion 11a. Part 11a is used. As a material of the fixed blade 11, for example, alloy tool steel is used.

  As shown in FIG. 12, the mounting seat 12 includes mounting recesses 12 a for mounting the fixed blades 11 on the surface side. Each fixed blade 11 is attached to the attachment recess 12 a so that the blade portion 11 a protrudes from the attachment seat body 12. When attaching each fixed blade 11, the protruding amount of the blade portion 11 a is adjusted by the adjusting bolt 14 and the nut 15, and then the fixed blade 11 is attached by the mounting bolt 13 through the long hole 11 e formed in the fixed blade 11. Is fixedly attached to the mounting seat 12 in a detachable manner. Then, as shown in FIG. 1, the mounting seat 12 is attached to the crushing machine body 2 so that the blade portion 11 a of the fixed blade 11 faces the rotating body 5, whereby the fixed blade assembly 10 is attached to the crushing machine body 2. Attached to.

Here, as shown in FIG. 1, in the fixed blade assembly 10, a rake face 11 b as a surface of the fixed blade 11 is inclined with respect to the horizontal axis L toward the rotary shaft 4 by an angle α. ing. Further, in the fixed blade assembly 10, the rake face 11 b of the fixed blade 11 is arranged so as to be shifted from the center axis O of the rotating shaft 4 by the distance E. As a result, as shown in FIG. 2A, the rake face that is the front surface of the rotary blade 7 in the rotational direction and the rake face 11b that is the surface of the fixed blade 11 are arranged at a shear angle θ at the start of shearing. ing.
When crushing the object to be crushed W, the blade portion 7 a of the rotary blade 7 performs a circular motion around the central axis O of the rotary shaft 4. The rotation locus of the blade edge 7aa of the blade portion 7a of the rotary blade 7 is H as shown in FIG. 2 (A), FIG. 3, FIG. 4, FIG.

  On the other hand, the blade portion 11a of the fixed blade 11 is formed in a shape in which adjacent V-shaped ridge lines are concave curves. 2B, when the blade edge 7aa of the blade portion 7a of the rotary blade 7 comes on the rake face 11b of the fixed blade 11, the blade edge 7aa of the blade portion 7a of the rotary blade 7 and the fixed blade 11 The blade portion 11a of the fixed blade 11 is formed so that the clearance from the blade portion 11a is δ1. And the shape of the flank 11d including the blade part 11a of the fixed blade 11 is formed so as to hold a gap between the rotary blade 7 and the blade part 7a at regular intervals along the rotation direction of the rotary blade 7. Yes. Here, “holding at a constant interval” means a shape that follows the rotation to the extent that the expected expansion of the gap is not unreasonable in design so that the gap is not enlarged as much as possible by the rotation of the rotary blade 7. It means replenishment, and it does not matter whether the dimension of the gap is strictly constant or not constant. As shown in FIG. 4, when the blade base 7 ab of the blade portion 7 a of the rotary blade 7 comes on the rake face 11 b of the fixed blade 11, as shown in FIG. 5, it is fixed to the cutting edge 7 aa of the blade portion 7 a of the rotary blade 7. The clearance surface 11d including the blade portion 11a of the blade 11 and the gap are kept constant and remain δ1. On the other hand, the clearance surface 11d including the blade base 7ab of the blade portion 7a of the rotary blade 7 and the blade portion 11a of the fixed blade 11 and the gap are slightly larger than δ1 and δ2. The clearance between the blade portion 7a of the rotary blade 7 and the flank 11d including the blade portion 11a of the fixed blade 11 increases gradually from δ1 to δ2 from the cutting edge 7aa to the blade base 7ab of the rotary blade 7, and this clearance is increased. The rotating blades 7 are held at regular intervals along the rotation direction. The clearance δ1 may be maintained so that the cutting edge 7aa of the blade portion 7a of the rotary blade 7 and the flank 11d including the blade portion 11a of the fixed blade 11 are as close as possible. Further, although the gap δ2 is larger than the gap δ1, the gap δ2 is maintained so that the blade base 7ab of the blade portion 7a of the rotary blade 7 and the flank 11d including the blade portion 11a of the fixed blade 11 are as close as possible. It only has to be done.

Here, a mode in which the gap δ2 is slightly larger than the gap δ1 has been described. However, the present invention is not limited to this mode, and the gap δ2 may be equal to or smaller than the gap δ1.
And the shape of the sharpened part 11c provided in the front-end | tip of the blade part 11a of the fixed blade 11 is formed so that it may sharpen from the front-end | tip of the blade part 11a, and the clearance gap between the blade base 7ab of the blade part 7a of the rotary blade 7a Are held at regular intervals along the rotational direction of the rotary blade 7. Here, “holding at a constant interval” means a shape that follows the rotation to the extent that the expected expansion of the gap is not unreasonable in design so that the gap is not enlarged as much as possible by the rotation of the rotary blade 7. It means replenishment, and it does not matter whether the dimension of the gap is strictly constant or not constant. That is, as shown in FIG. 5, when the blade base 7ab of the blade portion 7a of the rotary blade 7 comes on the rake face 11b of the fixed blade 11, the blade base 7ab of the blade portion 7a of the rotary blade 7 and the blade of the fixed blade 11 The clearance surface 11d including the portion 11a and the gap are δ2. When the blade base 7ab of the blade portion 7a of the rotary blade 7 comes on the rake face 11b of the fixed blade 11, a clearance surface 11d including the blade base 7ab of the blade portion 7a of the rotary blade 7 and the blade portion 11a of the fixed blade 11 is obtained. And the gap between the cutting edge 7ab of the blade portion 7a of the rotary blade 7 and the sharpened portion 11c is the same, and is δ2. The shape of the sharpened portion 11 c is formed so as to hold the gap at a constant interval δ2 along the rotation direction of the rotary blade 7. Specifically, in FIG. 4, the sharpened portion 11c is formed so that the distance between the rotation locus F of the blade base 7ab of the blade portion 7a of the rotary blade 7 and the tip of the sharpened portion 11c is δ2. .

  Further, the rotating blade support holder 8 performs a circular motion around the central axis O of the rotating shaft 4 when the object W is crushed. As described above, the rotary blade support holder 8 includes the V-shaped protrusion 8c on the rear side in the rotation direction of the rotary blade housing recess 8b of the holder body 8a. The outer shape including the top line 8h of the V-shaped protrusion 8c keeps the gap between the fixed blade 11 and the flank 11d including the blade portion 11a at a constant interval along the rotation direction of the rotary blade support holder 8. It is formed to do. Here, “holding at a constant interval” means a shape that follows the rotation to the extent that the expected expansion of the gap is not unreasonable in design so that the gap is not enlarged as much as possible by the rotation of the rotary blade 7. It means replenishment, and it does not matter whether the dimension of the gap is strictly constant or not constant. More specifically, the top line 8h of the V-shaped protrusion 8c is formed in an arc shape having a radius H1 from the central axis O of the rotating shaft 4, as shown in FIG. The rotation trajectory of the arcuate top line 8h having a radius H1 and the rotation trajectory H of the blade edge 7aa of the blade portion 7a of the rotary blade 7 are the same. Therefore, the top line 8h of the V-shaped protrusion 8c and the clearance surface 11d including the blade part 11a of the fixed blade 11 are spaced from the clearance surface 11d on the rake face 11b of the fixed blade 11. 5 until it passes through the tip of the fixed blade 11 and is δ1 shown in FIG. On the other hand, the shoulder portion 8d on the blade base 7ab side of the rotary blade support holder 8 (the base portion of the V-shaped projection portion 8c) is shown in FIGS. 10A, 10B, 10C, and 11A. , (B), (C), a groove 8f having a groove bottom 8g formed in an arc shape with a radius Fl from the central axis O of the rotating shaft 4 is formed. The rotation locus of the arc-shaped groove bottom 8g having the radius Fl and the rotation locus F of the blade base 7ab of the blade portion 7a of the rotary blade 7 are the same. Accordingly, the gap between the arcuate groove bottom 8g of the groove 8f and the clearance surface 11d including the blade portion 11a of the fixed blade 11, specifically, the arcuate groove bottom 8g of the groove 8f and the fixed blade 11 are provided. The gap between the sharpened portion 11c is held constant until the arcuate groove bottom 8g of the groove 8f passes over the rake face 11b of the fixed blade 11 and passes the tip of the fixed blade 11, and is shown in FIG. It is. The clearance between the outer shape of the V-shaped protrusion 8c and the flank 11d including the blade 11a of the fixed blade 11 increases gradually from δ1 to δ2 from the top line 8h to the groove bottom 8g of the V-shaped protrusion 8c. The gap is held at a constant interval along the rotation direction of the rotary blade 7.

  Further, as described above, a pair of protrusions 8e is provided on both shoulder portions 8d of the rotary blade support holder 8 located on the blade base 7ab side of the blade portion 7a of the rotary blade 7. Each protrusion 8e is located on the outer side in the width direction of the V-shaped protrusion 8c across the groove bottom 8g, and is formed so as to become gradually thinner upward from the root. And the width direction inner side surface of each projection part 8e is the clearance gap between the flank 11d containing the blade part 11a of the fixed blade 11 adjacent to the blade part 11a of the fixed blade 11 which opposes the blade part 7a of the rotary blade 7. FIG. Are formed at regular intervals along the rotational direction of the rotary blade support holder 8. Here, “holding at a constant interval” means a shape that follows the rotation to the extent that the expected expansion of the gap is not unreasonable in design so that the gap is not enlarged as much as possible by the rotation of the rotary blade 7. It means replenishment, and it does not matter whether the dimension of the gap is strictly constant or not constant. More specifically, the clearance between the protrusion 8e and the flank 11d including the blade 11a of the adjacent fixed blade 11 is such that the shoulder 8d of the rotary blade support holder 8 is on the rake surface 11b of the fixed blade 11. It is held at a constant interval until it passes through the tip of the fixed blade 11 after arriving. The clearance between the protrusion 8e and the flank 11d is between the outer shape of the V-shaped protrusion 8c and the flank 11d including the blade 11a of the fixed blade 11 facing the blade 7a of the rotary blade 7. It is about the same as the gap. As shown in FIG. 10C, the top line of each protrusion 8e is formed in an arc shape having a radius G1 from the central axis O of the rotating shaft 4. The rotation trajectory of the arc-shaped top line having a radius G1 is indicated by G in FIG.

And the screen board 9 which has the some discharge hole 9a is installed in the downward position of the rotary body 5 of the crushing machine body 2, as shown in FIG.
In the uniaxial shearing type crusher 1 configured as described above, the object to be crushed W is put into the crushing chamber 3 as shown in FIG. On the other hand, the rotary blade 7 attached to the rotary body 5 rotates around the central axis O of the rotary shaft 4 as shown in FIGS. 2 (A), 3, 4, 6 and 7.

  The object to be crushed W put into the crushing chamber 3 is hooked on the blade part 7 a of the rotating rotary blade 7 and reaches the blade part 11 a of the fixed blade 11. Then, the rotation of the blade portion 7 a of the rotary blade 7 continues, and the rotary blade support holder 8 passes through the fixed blade 11. At this time, the object to be crushed W is dragged by the blade portion 7 a of the rotating rotary blade 7 in the gap between the blade portion 7 a of the rotary blade 7 and the flank 11 d including the blade portion 11 a of the fixed blade 11. Here, due to the synergistic effect of the shearing force on the object to be crushed W by the relative movement of the rotary blade 7 with respect to the fixed blade 11 and the tensile force on the object to be crushed W that drags the object to be crushed W in the gap, the object to be crushed W becomes It is crushed.

The crushed object W is discharged to the outside through the discharge holes 9a of the screen plate 9 below.
Here, in the uniaxial shear crusher 1 according to the present embodiment, the protrusion 8e is provided on the shoulder 8d of the rotary blade support holder 8 located on the blade base 7ab side of the blade portion 7a of the rotary blade 7. It has been. For this reason, when the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed, the fixed blade 11 facing the shoulder portion 8d of the rotary blade support holder 8 and the blade portion 7a of the rotary blade 7. The protrusion 8e is present between the flank 11d including the blade 11a adjacent to the blade 11a, and the gap between the shoulder 8d and the flank 11d of the fixed blade 11 is reduced. Thereby, it can prevent that the to-be-crushed object W slips through the said clearance gap, and can improve the crushing efficiency of the to-be-crushed object W.

  Further, in the uniaxial shearing crusher 1 according to the present embodiment, the protruding portion 8e has the blade portion 11a of the fixed blade 11 adjacent to the blade portion 11a of the fixed blade 11 facing the blade portion 7a of the rotary blade 7. Is formed so as to be held at a constant interval along the rotation direction of the rotary blade support holder 8. For this reason, the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed, and the rotary blade support holder 8 that supports the rotary blade 7 when the rotary blade support holder 8 passes through the fixed blade 11. The gap between the protruding portion 8e and the flank 11d including the blade portion 11a of the fixed blade 11 can be maintained at a constant interval. Thereby, it can prevent that the to-be-crushed object W slips through the said clearance gap, and can further improve the crushing efficiency of the to-be-crushed object W. The protrusions of the rotary blade support holder 8 that are held at regular intervals when the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed and the rotary blade support holder 8 passes through the fixed blade 11. In the gap between the portion 8e and the flank 11d including the blade portion 11a of the fixed blade 11, the object W to be crushed is dragged by the protruding portion 8e of the rotating blade support holder 8 that rotates. In addition to the shearing force on the object W to be crushed by the relative movement of the rotary blade 7 with respect to the fixed blade 11, the clearance including the protrusion 8 e of the rotary blade support holder 8 and the blade portion 11 a of the fixed blade 11 held at a constant interval. A synergistic effect of the tensile force on the object to be crushed W that drags the object to be crushed in the gap with the surface 11d is exhibited. Thereby, the crushing efficiency of the to-be-crushed object W improves.

  In the conventional uniaxial shearing crusher 101 shown in FIGS. 22 to 28, when the blade base 107ab of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, FIG. As shown, there is a large gap A between the shoulder 108c of the rotary blade support holder 108 and the flank 111d including the blade 111a of the fixed blade 111.

  Further, in the uniaxial shearing crusher 1 according to the present embodiment, the rotary blade support holder 8 includes the top line 8h of the V-shaped protrusion 8c formed on the rear side in the rotation direction of the rotary blade housing recess 8b. The outer shape of the clearance between the blade 7a of the rotary blade 7 and the flank 11d including the blade 11a of the fixed blade 11 facing the blade 7a is maintained at regular intervals along the rotational direction of the rotary blade support holder 8. Formed. For this reason, when the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed, and the rotary blade support holder 8 passes through the fixed blade 11, the V-shaped protrusion of the rotary blade support holder 8. The gap between the outer shape of 8c and the flank 11d including the blade portion 11a of the fixed blade 11 can be made constant. Thereby, it can prevent that the to-be-crushed object W slips through the said clearance gap, and can further improve the crushing efficiency of the to-be-crushed object W. When the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed, and the rotary blade support holder 8 passes through the fixed blade 11, the V-shaped projections 8c that are held at regular intervals. Even in the gap between the outer shape and the flank 11 d including the blade portion 11 a of the fixed blade 11, the object to be crushed W is dragged by the V-shaped protrusion 8 c of the rotating blade support holder 8 that rotates. In addition to the shearing force on the object W to be crushed by the relative movement of the rotary blade 7 with respect to the fixed blade 11, the outer shape of the V-shaped protrusion 8 c of the rotary blade support holder 8 held at a constant interval and the blade portion of the fixed blade 11. The synergistic effect of the tensile force with respect to the material to be crushed W that drags the material to be crushed W in the gap with the flank 11d including 11a is exhibited. Thereby, the crushing efficiency of the to-be-crushed object W improves.

  Further, in the uniaxial shearing crusher 1 according to the present embodiment, the blade base 7ab of the blade portion 7a of the rotary blade 7 is provided at the tip of the blade portion 11a of the fixed blade 11 facing the blade portion 7a of the rotary blade 7. A sharpened portion 11c is provided to hold the gap between the two at a constant interval along the rotation direction of the rotary blade 7. For this reason, when the rotary blade and the fixed blade cooperate to crush the object to be crushed and the rotary blade support holder 8 passes through the fixed blade 11, the blade base 7ab of the blade portion 7a of the rotary blade 7 and the fixed blade It is possible to maintain a gap between the 11 blade portions 11a and the sharpened portion 11c provided at the tip of the blade portion 11a at a constant interval. Thereby, it can prevent that the to-be-crushed object W slips through the clearance gap between the front-end | tip of the blade part 11a of the fixed blade 11, and the rotary blade 7, and can improve the crushing efficiency of the to-be-crushed object W further. When the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed, the blade base 7ab of the blade portion 7a of the rotary blade 7 and the sharpened portion 11c of the fixed blade 11 that are held at regular intervals. Even in the gap, the object to be crushed W is dragged by the blade portion 7a of the rotating blade 7 that rotates. In addition to the shearing force on the object W to be crushed by the relative movement of the rotary blade 7 with respect to the fixed blade 11, the cutting edge 7 ab of the blade portion 7 a of the rotary blade 7 and the sharpened portion 11 c of the fixed blade 11 held at regular intervals. The synergistic effect of the tensile force with respect to the material to be crushed W that drags the material to be crushed W in the gap is exhibited. Thereby, the crushing efficiency of the to-be-crushed object W improves.

  In the conventional uniaxial shear crusher 101 shown in FIGS. 22 to 28, the tip of the blade portion 111a of the fixed blade 111 is formed on the flat surface 111c. For this reason, when the rotary blade 107 further rotates from the time when the blade base 107ab of the blade portion 107a of the rotary blade 107 comes on the rake face 111b of the fixed blade 110, the blade base 107ab of the blade portion 107a of the rotary blade 107 and the fixed blade The gap between the 111 blade portion 111a and the flat surface 111c gradually increased.

  Furthermore, in the uniaxial shearing crusher 1 according to the present embodiment, the sharpened portion of the fixed blade 11 is placed on the shoulder portion 8d of the rotary blade support holder 8 located on the blade base 7ab side of the blade portion 7a of the rotary blade 7. Grooves 8f that hold the gaps between the rotating support holder 8 at a constant interval along the rotation direction of the rotation support holder 8 were formed. For this reason, when the rotary blade 7 and the fixed blade 11 cooperate to crush the object W to be crushed and the rotary blade support holder 8 passes through the fixed blade 11, the blade base 7ab of the blade portion 7a of the rotary blade 7 is used. A gap between the groove 8f formed in the shoulder portion 8d of the rotary blade support holder 8 positioned on the side and the sharpened portion 11c of the fixed blade 11 can be maintained at a constant interval. Thereby, it can prevent that the to-be-crushed object W slips through the said clearance gap, and can further improve the crushing efficiency of the to-be-crushed object W. When the rotary blade 7 and the fixed blade 11 cooperate to crush the object to be crushed W and the rotary blade support holder 8 passes through the fixed blade 11, the shoulder of the rotary blade support holder 8 held at a constant interval. Even in the gap between the groove 8f formed in the portion 8d and the sharpened portion 11c of the fixed blade 11, the crushed object W is dragged by the groove 8f formed in the rotating rotary blade support holder 8. In addition to the shearing force on the object W to be crushed by the relative movement of the rotary blade 7 with respect to the fixed blade 11, the groove 8 f formed in the shoulder 8 d of the rotary blade support holder 8 held at a constant interval and the sharpness of the fixed blade 11. The synergistic effect of the tensile force with respect to the material to be crushed W that drags the material to be crushed W in the gap with the portion 11c is exhibited. Thereby, the crushing efficiency of the to-be-crushed object W improves.

  Note that when the object to be crushed W is crushed by the uniaxial shear crusher 1 over a long period of time, the rotary blade support holder 8 made of relatively soft carbon steel or the like has a V-shaped protrusion 8c and a groove 8f. And the protruding portion 8e wears out. In this case, the clearance between the flank 11d including the blade portion 11a of the fixed blade 11 and the V-shaped protrusion 8c, the clearance between the flank 11d and the groove 8f, and the clearance 11d and the protrusion 8e. The gap between and becomes larger. If the gap becomes too large, the crushing efficiency is lowered, so that the rotary blade support holder 8 needs to be replaced. In the uniaxial shearing type crusher 1 according to the present embodiment, the gap is relatively small and held at a constant interval in the initial stage, so that the replacement span of the rotary blade support holder 8 can be lengthened.

As mentioned above, although embodiment of this invention has been described, this invention is not limited to this, A various change and improvement can be performed.
For example, the shape of the protruding portion 8e is not necessarily the gap between the flank 11d including the blade portion 11a of the fixed blade 11 adjacent to the blade portion 11a of the fixed blade 11 facing the blade portion 7a of the rotary blade 7. It does not have to be formed so as to be held at regular intervals along the rotation direction of the rotary blade support holder 8.

Further, the shape of the flank 11 d including the blade portion 11 a of the fixed blade 11 facing the blade portion 7 a of the rotary blade 7 is not necessarily limited to the clearance between the blade portion 7 a of the rotary blade 7 and the rotational direction of the rotary blade 7. It is not necessary to form it so that it may be kept at regular intervals along.
Further, in the rotary blade support holder 8 that supports the rotary blade 7, it is not always necessary to provide the V-shaped protrusion 8 c on the rear side in the rotation direction of the rotary blade housing recess 8 b. Further, if the rotary blade support holder 8 has a shape that can pass through the fixed blade 11, the outer shape including the top line 8 h of the V-shaped protrusion 8 c is not necessarily the flank 11 d including the blade portion 11 a of the fixed blade 11. It is not necessary to keep the gap between the two at regular intervals along the rotation direction of the rotary blade support holder 8.

  Furthermore, if the rotary blade support holder 8 has a shape that can pass through the fixed 11, the shoulder portion 8 d of the rotary blade support holder 8 positioned on the blade base 7 ab side of the blade portion 7 a of the rotary blade 7 is not necessarily attached to the shoulder portion 8 d. It is not necessary to form the groove 8f that holds the gap between the sharpened portion 11c at a constant interval along the rotation direction of the rotation support holder 8 along the rotation direction.

DESCRIPTION OF SYMBOLS 1 Uniaxial shearing crusher 2 Crushing machine body 3 Crushing chamber 4 Rotating shaft 5 Rotating body 6 Rotating blade assembly 7 Rotating blade 7a Blade part 7aa Blade tip 7ab Blade base 7b Surface 7c Screw hole 7d Mounting bolt 7e Mounting bolt 8 Rotating blade support holder 8a Holder body 8b Recessed blade housing recess 8c V-shaped projection 8d Shoulder 8e Projection 8f Groove 8g Groove bottom 8h Top line 8i Mounting hole 8j Mounting hole 9 Screen plate 10 Fixed blade assembly 11 Fixed blade 11a Blade portion 11b Rake Surface 11c Pointed portion 11d Flank 11e Long hole 12 Mounting seat 12a Mounting recess 13 Mounting bolt 14 Adjustment bolt 15 Nut

Claims (6)

A crushing machine body having a crushing chamber formed therein, a rotating shaft rotatably provided in the crushing chamber, a rotating body rotatably provided with the rotating shaft on an outer periphery of the rotating shaft, and an outer periphery of the rotating body A rotary blade assembly attached to the crushing chamber and a fixed blade provided in the crushing chamber, wherein the rotary blade assembly cooperates with the fixed blade to crush the object to be crushed, and the rotation A rotary blade support holder for supporting the blade, wherein the blade portion of the rotary blade is formed in two substantially straight V-shaped ridge lines, and the blade portion of the fixed blade is the blade portion of the rotary blade A uniaxial shearing type crusher formed by arranging a plurality of blade portions of the fixed blade side by side in parallel and comprising two adjacent ridge lines in a substantially V shape opposite to the two linear ridge lines as
A uniaxial shearing type crusher characterized in that a protrusion is provided on the shoulder of the rotary blade support holder located on the blade base side of the blade portion of the rotary blade.   A gap between the protruding portion and the flank including the blade portion of the fixed blade adjacent to the blade portion of the fixed blade facing the blade portion of the rotary blade along the rotation direction of the rotary blade support holder. The uniaxial shearing type crusher according to claim 1, wherein the uniaxial shearing type crusher is formed so as to be held at a constant interval.   The rotary blade support holder includes a rectangular block-shaped holder main body extending in the front-rear direction which is the rotational direction and the width direction which is the rotational axis direction, and a rotary blade accommodating recess recessed in a V shape formed on the front side of the holder main body in the rotational direction. And an outer shape including a top line of the V-shaped protrusion, the V-shaped protrusion formed on the rear side in the rotation direction of the rotary blade housing recess and protruding upward from the holder body in a V-shape, The clearance between the blade portion of the rotary blade and the clearance surface including the blade portion of the fixed blade facing the blade portion is formed so as to be held at a constant interval along the rotation direction of the rotary blade support holder. The uniaxial shearing type crusher according to claim 1 or 2.   A sharpened portion is provided at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade, and the sharpened portion is separated from the blade base of the blade portion of the rotary blade by the rotation direction of the rotary blade. The uniaxial shearing type crusher according to any one of claims 1 to 3, wherein the uniaxial shearing crusher is formed so as to be held at a constant interval along the axis.   A gap between the rotary blade support holder located on the blade base side of the rotary blade and the sharpened portion of the fixed blade is formed in the rotation direction along the rotation direction of the rotary blade support holder. 5. A uniaxial shearing crusher according to claim 4, wherein grooves are formed to be held at regular intervals along the groove. A crushing machine body having a crushing chamber formed therein, a rotating shaft rotatably provided in the crushing chamber, a rotating body rotatably provided with the rotating shaft on an outer periphery of the rotating shaft, and an outer periphery of the rotating body A rotary blade assembly attached to the crushing chamber and a fixed blade provided in the crushing chamber, wherein the rotary blade assembly cooperates with the fixed blade to crush the object to be crushed, and the rotation A rotary blade support holder for supporting the blade, wherein the blade portion of the rotary blade is formed in two substantially straight V-shaped ridge lines, and the blade portion of the fixed blade is the blade portion of the rotary blade A uniaxial shearing type crusher formed by arranging a plurality of blade portions of the fixed blade side by side in parallel and comprising two adjacent ridge lines in a substantially V shape opposite to the two linear ridge lines as
A sharpened portion is provided at the tip of the blade portion of the fixed blade facing the blade portion of the rotary blade, and the sharpened portion is separated from the blade base of the blade portion of the rotary blade by the rotation direction of the rotary blade. A uniaxial shearing type crusher formed so as to be held at regular intervals along the axis.

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