JP2009241000A - Fixed blade structure and shear type crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a fixed blade structure which is easy for stably holding crushing chips, and certainly and easily carries out replacing the crushing chips and changing position or reversing of a blade top. <P>SOLUTION: The fixed blade structure is provided with: a plurality of cubic crushing chips 31 for crushing objects to be crushed by a combination corresponding to a plurality of rotatingly driven blades 23; a fixed blade body 33 for supporting the plurality of crushing chips 31; and attaching bolts 34 for fixing the crushing chips 31 to the fixed blade body 33. In the fixed blade structure, the fixed blade body 33 is provided with: a back surface support 41 for supporting the back surfaces of the crushing chips 31 while abutting to them; and a side surface support 43 for supporting, while abutting to, the side surface 31c of the crushing chips 31 opposite to a blade top 31a side facing to the rotary blades 23. The crushing chips 31 are fixed to the back surface support 41 with the attaching bolts 34 in a state of partially exposing the side surfaces in parallel to at least one of the flat side surfaces of the blade top 31a side. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a fixed blade structure provided with a plurality of crushing tips for crushing a crushing object with a combination corresponding to a plurality of rotary blades, and a shearing crusher provided with the fixed blade structure.

  Conventionally, as a shearing type crusher, a rotary blade structure provided on a frame body such as a frame so as to be capable of rotational driving, and a fixed blade structure body fixed to the frame body so as to face the rotary blade structure The one with is known. In the rotary blade structure, a plurality of rotary blades are arranged so as to protrude in the radial direction from the periphery, and in the fixed blade structure, a plurality of crushing tips are arranged so as to protrude toward the rotary blade structure. This shearing type crusher performs crushing by applying a shearing force or the like to a crushing object between a rotating blade of a rotary blade structure that is driven to rotate and a crushing tip of a fixed blade structure.

  As a fixed blade structure, for example, Patent Document 1 below describes a structure in which a plurality of crushing chips are arranged on a long fixed blade body.

  The fixed blade body has a concave notch step portion in which a rectangular parallelepiped tip is disposed with one blade tip protruding. Each notch step is formed in a shape corresponding to the chip. In the state where the tip is arranged in the notch step portion, the entire lower surface of the tip rotating blade structure in the rotational direction is in contact with the bottom surface of the notch step portion, and the side surface opposite to the cutting edge side facing the rotating blade of the tip is notched. Abuts the side surface of the step. Since the height of the side surface of the notch step portion is formed equal to the thickness of the chip, the entire side surface of the chip in the thickness direction is in contact with the side surface of the notch step portion.

  To assemble the fixed blade structure, the lower surface of each chip is brought into contact with the bottom surface of the notch step to project one blade edge, and the side surface opposite to the blade edge facing the rotary blade structure is formed on the notch step portion. The tip is positioned and arranged at each notch step portion, and a mounting bolt is passed through the through hole provided in the tip from the upper surface side, and is fastened to the fixed blade body and fixed. .

In such a fixed blade structure, when the cutting edge of the chip is worn out during use, for each chip, the position of the cutting edge is changed and the cutting edge of another corner is protruded, or the upper and lower surfaces are inverted, It is possible to change the tip.
Japanese Patent Laid-Open No. 10-296107

  However, in such a fixed blade structure of the shearing type crusher, the entire lower surface of the rectangular parallelepiped chip is in contact with the bottom surface of the stepped recess, and two adjacent ones on the side opposite to the cutting edge side facing the rotary blade of the chip. Each chip is arranged in the step recess in a state where the entire thickness direction of the side surface is in contact with the side surface of the step recess. That is, in the mounted state, only the upper surface of each chip and the two adjacent side surfaces on the blade edge side are exposed from the fixed blade body.

  Therefore, it is not easy to stably hold the chips when the chips are attached or detached. When holding the tip in an unstable state and performing attachment / detachment work or repositioning or reversing the blade edge, for example, work efficiency is likely to decrease, and due to misalignment of the tip or fixture or deviation of the work tool, Chips, fixtures, tools, etc. were easily damaged.

  The present invention has been made in view of the above problems, and is a fixed blade that can easily hold a crushing tip stably, and can reliably and easily perform crushing tip attaching / detaching operations and blade tip repositioning or reversing operations. Another object is to provide a structure and a shearing crusher having such a fixed blade structure.

  In order to solve the above-mentioned problem, the fixed blade structure according to claim 1 supports a plurality of crushing tips for crushing a crushing object with a combination corresponding to a plurality of rotary blades that are driven to rotate, and the plurality of crushing tips. A fixed blade main body, and a fixture for fixing the crushing tip to the fixed blade main body, the fixed blade main body abutting and supporting a lower surface of the crushing tip, and the rotation of the crushing tip In the fixed blade structure including a side surface support portion that supports a side surface opposite to the blade edge side that faces the blade, the crushing tip is a surface parallel to at least one flat side surface on the blade edge side. It is set as the structure fixed to the said lower surface support part by the said fixing tool in the state which exposed the part.

  According to such a configuration, the crushing tip fixed to the lower surface support portion of the fixed blade body can expose a part of the surface parallel to at least one flat side surface on the blade edge side. When fixing to or releasing from the fixed blade body, the crushing tip is held by sandwiching at least a part of the flat side surface on the blade edge side and at least a part of the exposed surface parallel to this surface from the outside. Is possible.

  The fixed blade structure according to claim 2 is a configuration in which the fixed blade body includes a base body having the lower surface support portion and a divided body that is attached to the base body and has at least a part of the side surface support portion. It is what.

  According to such a configuration, when the divided body is detached from the base body, a part of a surface parallel to at least one flat side surface on the cutting edge side of the crushing tip that contacts the side surface support portion of the divided body is exposed. The crushing tip can be clamped from the outside by the exposed surface and the surface on the blade tip side of the crushing tip. In addition, if the divided body is mounted on the base body, a sufficiently large side support portion can be formed, and the side surface opposite to the cutting edge side facing the rotary blade of the crushing tip can be reliably supported during crushing. Can do.

  In the fixed blade structure according to claim 3, the base has a stepped recess in which the crushing tip is disposed, and the divided body includes a plate-like body attached to the base, and a side surface of the stepped recess The side surface support portion is continuously formed by the side surface of the divided body.

  According to such a configuration, if the divided body is detached from the base body, a part of the side surface of the crushing tip can be exposed in a state in which the side surface of the crushing tip is in contact with the side surface support portion formed of the side surface of the stepped recess. The crushing tip can be clamped using this part. In addition, when fixing the crushing tip to the lower surface support portion of the base, the side surface of the crushing tip can be brought into contact with the side surface support portion formed of the side surface of the stepped recess with a part of the side surface of the crushing tip exposed. The crushing chip can be positioned by sandwiching the crushing chip.

  In the fixed blade structure according to claim 4, the divided body is composed of a plurality of plate-like pieces, and the base body is opened to the plurality of stepped recesses in which the crushing tips are disposed, and to the plurality of stepped recesses. A plurality of groove-shaped mounting portions on which plate-like pieces are mounted, and the side surface support portions are formed continuously on the side surfaces of the divided body and the side surfaces of the stepped recesses.

  According to such a configuration, if the divided body is detached from the base body, a part of the side surface of the crushing tip can be exposed in a state in which the side surface of the crushing tip is in contact with the side surface support portion formed of the side surface of the stepped recess. The crushing tip can be clamped using this part. In addition, when fixing the crushing tip to the lower surface support portion of the base, the side surface of the crushing tip can be brought into contact with the side surface support portion formed of the side surface of the stepped recess with a part of the side surface of the crushing tip exposed. The crushing chip can be positioned by sandwiching the crushing chip. And since a division body consists of a some plate-shaped piece, when attaching and detaching a part of crushing chip | tip, it is possible to detach | leave only the division body corresponding to the crushing chip | tip, and attachment / detachment of a division body is easy.

  The fixed blade structure according to claim 5 is configured such that the divided body is integrally formed with side support portions that abut on all of the opposite side surfaces in the plurality of crushing chips to be installed.

  According to such a configuration, all of the side surfaces of the crushing chip can be opened by detaching the divided body from the base, and the crushing chip can be rotated. Therefore, even when it becomes difficult for the crushing tip and the fixture to come off due to corrosion or the like, the crushing tip can be rotated and loaded with a large torque, so that the crushing tip can be easily removed. It is also possible to change the position of the cutting edge by rotating the crushing tip without completely removing the fixture.

  The fixed blade structure according to claim 6 is configured such that the fixed blade body is formed such that the lower surface support portion and the side surface support portion are integrally formed, and the side surface support portion is formed lower than the thickness of the crushing tip. It is a thing.

  According to such a configuration, since the fixed blade main body integrally forms all of the side surface support portions, other members for configuring the side surface support portions are unnecessary, and the configuration can be simplified. In addition, since the side support portion is lower than the thickness of the crushing tip, a part of the surface parallel to at least one flat side surface on the cutting edge side of the crushing tip can always be exposed. By holding, the crushing tip can be held, and the crushing tip can be attached and detached, and the blade tip can be repositioned or turned over reliably and easily.

  In the fixed blade structure according to claim 7, the fixture includes an attachment bolt, the crushing tip includes a female screw into which the attachment bolt is screwed, and the lower surface support portion includes a through hole of the attachment bolt. It is set as the structure provided.

  According to such a structure, a crushing chip | tip can be fixed by inserting a mounting bolt into a lower surface support part from the lower surface side. For this reason, the bolt head of the mounting bolt is disposed on the lower surface side of the fixed blade body, so that crushing dust does not easily adhere to the bolt head, and the working tool can be easily connected to the mounting bolt. In addition, since there is no need to operate the work tool on the upper surface side of the crushing tip, the work tool does not come into direct contact with the crushing tip even if the work tool is misaligned, and the crushing tip is damaged by the work tool. It can be surely prevented.

  In the shear type crusher according to an eighth aspect, a plurality of rotary blades are arranged so as to protrude to the periphery, and a rotary blade structure that is driven to rotate, and a plurality of rectangular parallelepiped crushing tips are opposed to the rotary blade structure side. In the shearing type crusher provided with the fixed blade structure mounted, the fixed blade structure includes the fixed blade structure according to any one of claims 1 to 7.

  According to the shear crusher having such a configuration, the crushing tip can be attached / detached because the crushing tip can be attached / detached and / or the blade tip can be repositioned / reversed reliably and easily. It is possible to easily perform maintenance such as position change or reversal of the blade edge.

  According to the fixed blade structure and the shearing type crusher of the present invention, at least a part of the flat side surface on the cutting edge side of the crushing tip and at least a part of the exposed surface parallel to the flat side surface on the cutting edge side are provided. Since the crushing tip can be fixed or released from the lower surface support part of the fixed blade body by pinching from the outside, the crushing tip can be held stably and the work can be performed, and attachment / detachment work and repositioning of the blade edge Alternatively, the reversing operation can be performed reliably and easily.

[First Embodiment]
The best mode for carrying out the present invention will be described below with reference to the drawings.
1 is a perspective view showing the main part of the shearing type crusher, FIG. 2 is a plan view showing the main part of the shearing type crusher, and FIG. 3 is an enlarged perspective view showing a part of the fixed blade structure, FIG. FIG. 5 is an exploded perspective view of each of the fixed structure viewed from the upper surface side or the lower surface side, and FIG. 6 is a perspective view for explaining the mounting and dismounting operations of the crushing tip.

<Shearing crusher>
As shown in FIG. 1 and FIG. 2, the shearing crusher is installed so as to crush a crushed material (not shown) in a pair with the rotary blade structure 11 and the rotary blade structure 11. And a fixed blade structure 13. The rotary blade structure 11 is rotatably provided on a frame body such as a frame at a base end portion of a hopper (not shown). Moreover, as shown in FIG. 2, the fixed blade structure 13 is installed in the length direction of the rotary blade structure 11 by arranging a plurality of the blades continuously. A supply unit such as a hopper for supplying an object to be crushed (not shown) is provided above the rotary blade structure 11 and the fixed blade structure 13, and similarly, a discharge unit for discharging the crushed pieces by its own weight is provided below. It has been.

<Rotating blade structure>
As shown in FIGS. 1 and 2, the rotary blade structure 11 includes a single rotary roller 21 and a large number of rotary blades 23 that are fixedly disposed on the rotary roller 21.

  The rotating roller 21 is driven in a rotation direction X indicated by an arrow by a driving unit such as a motor (not shown) so that a portion facing the fixed blade structure 13 moves from the supply unit side toward the discharge unit side during operation. Is done. The shape of the rotary roller 21 is not particularly limited as long as the rotary blade 23 can be fixed. In the first embodiment, the rotary roller 21 has a polygonal column shape.

  The rotary blades 23 are provided in mounting holes formed around the rotary roller 21 so as to protrude in the radial direction from the peripheral surface of the roller by supporting means such as bolts. The rotary blade 23 may be formed integrally with the rotary roller 21 or may be formed separately and fixed. The shape of the rotary blade 23 is not particularly limited as long as it can secure the strength to move the object to be crushed against the shearing force during operation.

<Fixed blade structure>
As shown in FIG. 3, the fixed blade structure 13 has a zigzag shape (sawtooth shape) in which adjacent top portions and trough portions are alternately arranged on one side edge on the side facing the rotary blade structure 11. ). The fixed blade structure 13 includes a plurality of crushing tips 31 each having a cutting edge 31 a, a single fixed blade main body 33 that supports the plurality of crushing tips 31, and a fixture that fixes each crushing tip 31 to the fixed blade main body 33. Mounting bolts 34 (see FIG. 4). The fixed blade structure 13 is fixed to a frame body (not shown) of the shearing crusher by a fixing bolt 32.

  The crushing tip 31 is formed in a rectangular parallelepiped shape with a material corresponding to the crushing object. This rectangular parallelepiped shape may be another polygonal shape such as a rectangular parallelepiped. In the first embodiment, a square plate shape is formed, and each corner 30a and a ridge 30b between the corners 30a can be used as the blade edge 31a. At the center of the crushing tip 31, an attaching / detaching internal thread portion (internal thread) 31d is provided in the thickness direction.

  As shown in FIGS. 1 to 3, the fixed blade body 33 is formed of a substantially long body that is disposed along the rotary blade structure 11 and parallel to the rotation axis of the rotary blade structure 11.

  A support portion 39 for supporting and fixing each crushing tip 31 from one side edge on the rotary blade structure 11 side of the fixed blade structure 13 from one upper surface side which is the front side in the rotation direction X. Are formed in a sawtooth shape by continuously arranging a plurality of adjacent to each other.

  As shown in FIGS. 3 and 4, each support portion 39 is formed in a step having a shape corresponding to or similar to the shape of the crushing tip 31, and is a lower surface on the rear side with respect to the rotation direction X of the crushing tip 31. The lower surface support part 41 which contacts and supports 31b, and the side surface support part 43 which contacts and supports the side surface 31c on the opposite side to the one blade edge | tip 31a made to oppose the rotary blade structure 11 of the crushing tip 31 are provided. .

  The lower surface support portion 41 is formed of the bottom surface of the support portion 39, has a shape that is the same as or similar to the lower surface 31b of the crushing tip 31, and is formed so that one corner protrudes toward the rotary blade structure 11 side. Therefore, the side edge of the fixed blade structure 13 on the rotary blade structure 11 side has a sawtooth shape in which adjacent top portions 40a and valley portions 40b are alternately arranged. The lower surface support portion 41 is in contact with the entire lower surface 31 b of the crushing tip 31.

  The side surface support portion 43 is composed of the side surface of the support portion 39. The side support part 43 is in a state in which one cutting edge 31a composed of one corner part 30a of the crushing tip 31 and the adjacent ridge part 30b is arranged to protrude toward the rotary blade structure 11 side, and the cutting edge 31a. It is formed in a shape that coincides with the two side surfaces 31c that are opposite to the side. Therefore, it has a sawtooth shape in which the adjacent top portions 42a and valley portions 42b of the side surface support portions 43 are alternately arranged. The side surface support portion 43 has the same height as the thickness of the crushing tip 31, and at least the entire height in the thickness direction of the side surface 31 c of the crushing tip 31 is in contact therewith.

  As shown in FIGS. 4 and 5, such a fixed blade body 33 includes a base body 35 and a divided body 37 disposed on the upper surface side of the base body 35, and the divided body 37 is detachably attached to the base body 35. A mounting bolt 36 is provided, and the base body 35 and the divided body 37 are fixed by the mounting bolt 36.

  The base body 35 is made of a long plate-like body, the lower surface is an attachment surface to a frame body (not shown) of the shearing crusher, and the upper surface is a mounting surface for the divided body 37 and the crushing chip 31.

  On the upper surface of the substrate 35 on the rotary blade structure 11 side, a step concave portion 35a having a shape corresponding to the shape of the support portion 39 is provided. The bottom surface of the stepped recess 35 a is a lower surface support portion 41. A side surface of the stepped recess 35 a constitutes a part of the side surface support portion 43, and is a lower side surface support portion 43 a lower than the thickness of the crushing tip 31. Each lower surface support portion 41 is provided with a through hole 35c of a mounting bolt 34 in the thickness direction.

  On the opposite side of the upper surface of the base body 35 from the rotary blade structure 11, a step protrusion 35 b that locks the divided body 37 is formed along the longitudinal direction. A through hole 35d of the fixing bolt 32 and a through hole 35e of the mounting bolt 36 are provided in the thickness direction between the step protrusion 35b and the step recess 35a.

  The divided body 37 is formed of a long plate-like body, and is disposed on the upper surface of the base body 35 so as not to overlap the bottom surface of the stepped recess 35a. The side surface on the rotary blade structure 11 side is formed in the same shape as the side surface of the stepped recess 35 a of the base body 35. This side surface constitutes a part of the side surface support portion 43, and is a high side surface support portion 43 b disposed adjacent to the low side surface support portion 43 a of the base body 35 in the thickness direction. That is, the side surface support part 43 is comprised from the low part side surface support part 43a and the high part side surface support part 43b here.

  A step recess 37 a that engages with a step protrusion 35 b of the fixed blade body 33 is provided on the edge of the lower surface of the divided body 37 opposite to the rotary blade structure 11. Further, between the stepped recess 37a and the high side support 43b, a female screw part 37c into which the mounting opening 36b of the fixing bolt 32 and the mounting bolt 36 are screwed is provided in the thickness direction.

Next, a method for using the fixed blade structure 13 will be described.
In order to assemble the fixed blade structure 13, each crushing tip 31 is fixed to the lower surface support portion 41 of the base 35 without attaching the divided body 37 to the base 35, and then the split body 37 is attached to the base 35. .

  First, as shown in FIG. 6, crushing is performed by sandwiching at least a part of the flat side surface of the crushing tip 31 on the blade tip 31a side and at least a part of a surface parallel to the side surface with a tool such as a wrench from the outside. While holding the chip 31, the lower surface 31 b of the crushing chip 31 is brought into contact with the lower surface support portion 41 of the stepped recess 35 a of the base 35 while the holding state is maintained, and two adjacent side surfaces 31 c of the crushing chip 31 are formed on the lower side surface. It is made to contact | abut to the two adjacent surfaces of the support part 43a. At this time, since the lower side surface support portion 43a is lower than the thickness of the crushing tip 31, the upper surface side of the side surface 31c of the crushing tip 31 in contact with the lower side surface support portion 43a can be exposed from the lower side surface support portion 43a. A part of the surface which is the back side of the surface on the side of the cutting edge 31a is maintained in an exposed state. Therefore, alignment can be performed while the crushing tip 31 is held.

  Next, the mounting bolt 34 is passed through the through hole 35c from the lower surface side of the fixed blade body 33, and at least a part of the flat side surface on the blade tip 31a side of the crushing tip 31 and at least a part of a surface parallel to the side surface are provided. In a state of being clamped from the outside by a tool such as a wrench, the mounting bolt 34 is screwed into the female thread portion 31d of the crushing tip 31 and tightened using a work tool. Thereby, the crushing tip 31 is fixed to the lower surface support portion 41.

  After that, the high side surface support portion 43b of the divided body 37 is brought into contact with the upper surface side of the two side surfaces 31c of the crushing tip 31 that is in contact with the low side surface support portion 43a, and the step concave portion 37a of the divided body 37 is formed. The split blade 37 is engaged with the stepped protrusion 35b of the fixed blade body 33, the divided body 37 is arranged on the upper surface of the base body 35 of the fixed blade main body 33, and the split body 37 is mounted on the base body 35 with the mounting bolt 36 from the lower surface side of the base body 35. . In a state where the fixed blade body 33 and the divided body 37 are fixed, the lower side surface support portion 43a of the base body 35 and the higher side surface support portion 43b of the divided body 37 are continuously provided without any step in the thickness direction. 43 is formed, and the overall height of the two side surfaces 31 c of the crushing tip 31 is supported by the side surface support portion 43.

  The assembly of the fixed blade structure 13 can be performed after the lower surface of the base body 35 of the fixed blade body 33 is fixed in advance to a frame body (not shown) of the shearing crusher. It may be performed without fixing to the frame and then fixed to the frame.

  After the fixed blade structure 13 is assembled and fixed to the shearing crusher, the object to be crushed can be crushed by the shearing crusher. At the time of crushing, the rotary blade structure 11 is rotated in the rotation direction X, a crushing object is supplied, and the plurality of rotary blades 23 of the rotary blade structure 11 and the plurality of crushing tips 31 of the fixed blade structure 13 that are driven to rotate. With a corresponding combination, crushing is performed by applying a shearing force or the like to the object to be crushed.

  When the blade tip 31a of the crushing tip 31 is worn or deteriorated due to use, the crushing tip is replaced, the position of the blade tip 31a is changed, or the upper and lower surfaces are reversed.

  In the attaching / detaching operation of the crushing tip and the position changing or reversing operation of the blade edge, the fixing bolt 36 is released from the lower surface side of the fixed blade structure 13 by the work tool and the divided body 37 is detached from the base body 35. Thereby, the upper surface side of the side surface 31c of the crushing tip 31 is exposed in a state of being in contact with the lower side surface support portion 43a. The crushing tip 31 is held by loosening the mounting bolt 34 from the lower surface side of the fixed blade body 33 with a work tool, and holding a pair of opposed positions (two parallel planes) of the exposed side surface 31c with a wrench or the like. While maintaining this state, the fixing of the mounting bolt 34 is released, and the crushing tip 31 is detached from the base body 35. Then, the cutting edge 31a of the crushing tip 31 is repositioned or reversed, or replaced with a new crushing tip 31, the unused cutting edge 31a is projected, and the crushing tip 31 is fixed to the fixed blade by assembling again as described above. Fix to the body 33.

  According to the fixed blade structure of the shearing crusher as described above, the crushing tip 31 is exposed to the base by the mounting bolt 34 in a state where a part of the surface parallel to at least one flat side surface on the blade tip 31a side is exposed. 35, when the crushing tip 31 is fixed to the fixed blade main body 33 or when the fixation is released, at least a part of the flat side surface on the blade tip 31a side is parallel to this side surface. The crushing tip 31 can be held by sandwiching at least a part of the exposed surface from the outside with a wrench or the like. For this reason, it is possible to reliably and easily perform the attaching / detaching operation and the blade tip repositioning or reversing operation while the crushing tip 31 is stably held.

  Further, since the fixed blade body 33 includes the base body 35 having the lower surface support portion 41 and the divided body 37 having the side surface support portion 43 and attached to the base body 35, the divided body 37 is detached from the base body 35. Then, the side surface 31c of the crushing tip 31 contacting the high side surface support portion 43b of the divided body 37 can be exposed, and the crushing tip 31 is formed by the exposed side surface 31c and the side surface 31c on the cutting edge side of the crushing tip 31. Can be held from the outside. Further, if the divided body 37 is attached to the base body 35, a sufficiently large side surface support portion 43 can be formed, and the side surface 31c opposite to the blade tip 31a of the crushing tip 31 can be reliably supported during crushing. it can. Therefore, it is possible to simply and easily perform the attaching / detaching operation of the crushing tip 31 and the repositioning or reversing operation of the blade edge, and at the same time, the structure that can reliably support the crushing tip 31 at the time of use.

  Further, the base body 35 has a step recess 35a, and the divided body 37 is mounted so as not to overlap the bottom surface (lower surface support portion 41) of the step recess 35a adjacent to the side surface (low side surface support portion 43a) of the step recess 35a. Since the side surface support portion 43 is continuously formed on the side surface of the stepped recess 35a and the side surface of the divided body 37, the stepped recess 35a can be removed by removing the divided body 37 from the base body 35. A part of the side surface 31c of the crushing tip 31 can be exposed in a state where the side surface 31c of the crushing tip 31 is in contact with the lower side surface support portion 43a, and the crushing tip 31 can be sandwiched using this portion. it can. Further, when the crushing tip 31 is fixed to the lower surface support portion of the base body 35, the side surface 31c of the crushing tip 31 is placed on the lower side surface support portion 43a of the stepped recess 35a with a part of the side surface 31c of the crushing tip 31 exposed. The crushing tip 31 can be positioned by holding the crushing tip 31 therebetween. Therefore, it is possible to more reliably and easily perform the attaching / detaching operation of the crushing tip 31 and the position changing or reversing operation of the blade edge.

  In addition, since the crushing tip 31 is provided with a female screw portion 31d, the lower surface support portion 41 is provided with a through hole 35c, and the crushing tip 31 is fixed by the mounting bolt 34 penetrating the through hole 35c from the lower surface side of the base body 35. The bolt head of the mounting bolt 34 can be disposed on the lower surface side of the fixed blade main body 33, and crushing dust hardly adheres to the bolt head. Therefore, it is easy to connect the working tool to the mounting bolt 34 and the crushing tip 31 can be easily attached and detached. Further, since it is not necessary to operate the work tool on the upper surface side of the crushing tip 31, the work tool does not come into direct contact with the crushing tip 31 even if the work tool is displaced. Can be reliably prevented.

The above-described embodiment can be appropriately changed within the scope of the present invention.
For example, in the configuration described above, an example of a shearing crusher having one rotary blade structure 11 and a plurality of fixed blade structures 13 has been described, but two rotary blade structures 11 are arranged in parallel, In the meantime, it is good also as a structure which installed the crushing chip | tip 31 in the both-sides edge of the fixed blade structure 13. FIG. In addition, the fixed blade structure 13 may be arranged in an inclined state with respect to the installation surface. Further, a plurality of fixed blade structures 13 and rotating blade structures 11 may be provided in parallel. For example, a biaxial rotating blade structure 11 parallel to each other is provided, and one or both rotating blade structures 11 are provided. Alternatively, the fixed blade structure 13 may be fixed and disposed opposite to.

[Second Embodiment]
FIG. 7 is an enlarged perspective view showing a part of the fixed blade structure used in the shearing crusher of the second embodiment, and FIG. 8 shows the operation of attaching / detaching the crushing tip of the fixed blade structure or the position of the blade edge. It is a disassembled perspective view explaining a change or inversion operation | work.

  The shear type crusher of the second embodiment has the same configuration as that of the first embodiment except that the structure of the fixed blade body 33 of the fixed blade structure 13 is different.

  As shown in FIGS. 7 and 8, the fixed blade body 33 includes a base body 51 and a plurality of independent divided bodies 53 arranged on the upper surface side of the base body 51.

  The base 51 is provided with a plurality of stepped recesses 51a having a shape corresponding to the shape of the support portion 39 on the rotary blade structure 11 side, and a plurality of groove-like divided body mounting portions 51b are provided on the upper surface. Each divided body mounting portion 51b opens continuously to two adjacent stepped recesses 51a.

  The step recess 51 a has a bottom surface serving as a lower surface support portion 41 of the support portion 39, and a side surface of the step recess 51 a constitutes a part of the side support portion 43 of the support portion 39. Since the side surface of the stepped recess 51a is provided with the opening of the divided body mounting portion 51b, a low side surface support portion 43c lower than the thickness of the crushing tip 31, and a total high side surface support portion 43d higher than the low side surface support portion 43c, Are formed, and these are repeated alternately in the arrangement direction of the stepped recesses 35a.

  Each of the plurality of divided bodies 53 is formed of a plate-like piece formed independently, and is fitted into a groove-shaped divided body mounting portion 51b and fixed from the lower surface side of the base body 51 by a mounting bolt (not shown) ( A screw hole (not shown) is formed in the split body mounting portion 51b, and the split body 53 is fixed by a mounting bolt from the screw hole). The side surface of each divided body 53 facing the stepped recess 51a is formed in the same shape as the side surface of the stepped recess 51a, constitutes a part of the side support 43 of the support 39, and the lower side support 43c of the base 51. On the other hand, it becomes the high part side surface support part 43e which adjoins in the thickness direction and continues. In addition, the arrangement | positioning opening 53a of the fixed volt | bolt 32 is provided in the one part division body 53 in the thickness direction. In addition, the split body 53 and the base body 51 may be provided with a step recess and a step protrusion that fit together such as the step recess 37a and the step protrusion 35b in the first embodiment. Other configurations are the same as those of the first embodiment.

Such a fixed blade structure 13 can also be assembled and used in the same manner as in the first embodiment. Here, the divided body 53 is composed of a plurality of plate-like pieces, and the groove-like divided body mounting portion 51b to which the divided body 53 is mounted opens in the stepped recess 51a. Therefore, the divided body 53 is detached from the base body 51. Then, the side surface 31c corresponding to the high side surface support portion 43e of the divided body 53 can be exposed, and the pair of parallel side surfaces 31c can be sandwiched by a wrench or the like.
Therefore, even with such a fixed blade structure 13, it is possible to obtain the same operational effects as in the first embodiment.

  In particular, in the fixed blade structure 13, the divided body 53 is composed of a plurality of plate-like pieces. Therefore, when a part of the crushing chips 31 is attached or detached, only the divided body 53 corresponding to the crushing chips 31 can be detached. It is possible to easily attach and detach the divided body 53, and it is easy to perform maintenance of the fixed blade structure 13 including a large number of crushing tips 31.

  Moreover, since one divided body 53 opens into two stepped recesses 51a adjacent to each other, and the high side surface support portion 43e of the divided body 53 contacts the side surfaces 31c of the two adjacent crushing tips 31, the divided body 53 Can be reduced to half of the number of crushing chips 31, and the number of parts can be reduced to simplify the structure.

[Third Embodiment]
FIG. 9 is an exploded perspective view of the crushing tip of the fixed blade structure used in the shearing crusher of the third embodiment, and FIG. 10 is the crushing tip of the fixed blade structure of the third embodiment. It is a figure explaining the position change operation | work of a blade edge | tip.

The shear type crusher of the third embodiment has the same configuration as that of the first embodiment except that the structure of the fixed blade main body 33 of the fixed blade structure 13 is different.
As shown in FIG. 9, the fixed blade body 33 includes a base body 61 on which the crushing tip 31 is supported on the upper surface of the rotary blade structure 11 side, and a divided body 63 disposed on the upper surface side of the base body 61.

  Unlike the first embodiment, the base body 61 is not provided with a stepped recess, and is formed of a long plate-like body whose upper surface is a flat surface. On the other hand, the divided body 63 is a long plate-like body having the same thickness as the crushing tip 31. A side support 43 is integrated with the side surface of the divided body 63 on the rotary blade structure 11 side, and a support 39 is formed so as to support all the flat side surfaces of the crushing chip 31 to be installed. That is, the divided body 63 is configured such that the support portion 39 is formed by fixing the divided body 63 to the upper surface formed of the plane of the base body 61. The upper surface on the rotary blade structure 11 side from the side surface support portion 43 of the base body 61 is a lower surface support portion 41. In addition, the split body 53 and the base body 51 may be provided with a step recess and a step protrusion that fit together such as the step recess 37a and the step protrusion 35b in the first embodiment. Other configurations are the same as those of the first embodiment.

  Such a fixed blade structure 13 can also be assembled and used in the same manner as in the first embodiment, and the side surface 31c opposite to the blade tip 31a facing the rotary blade 23 of the crushing tip 31 is exposed. Therefore, the same effect can be obtained.

  In particular, in the fixed blade structure 13, the divided body 63 includes all of the side surface support portions 43, and each crushing tip 31 is fixed in the thickness direction at one location of the crushing tip 31 by a mounting bolt (not shown). As shown in FIG. 10, by separating the divided body 63 from the base body 61, the side surface side of the crushing tip 31 can be completely opened, and the crushing tip 31 can be rotated. Therefore, when it becomes difficult for the crushing tip 31 and the mounting bolt to come off due to corrosion or the like, the crushing tip 31 can be rotated and loaded with a large torque to be relatively rotated, and the crushing tip 31 can be easily removed. In addition, since it is possible to change the position of the cutting edge of the crushing tip 31 without completely removing the mounting bolt, the attaching / detaching operation of the crushing tip 31 and the position changing or reversing operation of the cutting edge can be performed more easily. .

[Fourth Embodiment]
FIG. 11 is a perspective view for explaining the attaching / detaching operation of the crushing tip of the fixed blade structure used for the shearing crusher of the fourth embodiment or the repositioning or reversing operation of the blade tip.

  The shear crusher of the fourth embodiment has the same configuration as that of the first embodiment except that the structure of the fixed blade main body 33 of the fixed blade structure 13 is different.

  As shown in FIG. 11, the fixed blade main body 33 is not divided into a base and a divided body, but is integrally formed from a long plate-like body. The fixed blade main body 33 is provided with a mounting surface of a shearing crusher on the lower surface, and a support portion 39 of the crushing tip 31 is provided in a stepped recess shape on the upper surface.

The lower surface support portion 41 is formed by the bottom surface of the support portion 39, and all of the side surface support portions 43 are formed by the step side surface of the support portion 39 to be lower than the thickness of the crushing tip 31. Each lower surface support portion 41 is provided with a through-hole 35c of a mounting bolt (not shown) in the thickness direction.
Other configurations are the same as those of the first embodiment.

  The fixed blade structure 13 having such a configuration can be used by fixing each crushing tip 31 to the support portion 39 of the fixed blade main body 33.

  In order to fix each crushing tip 31, as shown in FIG. 11, crushing is performed by sandwiching at least a part of the surface on the blade edge 31a side and at least a part of the exposed surface facing this surface from the outside. While holding the chip 31, the lower surface 31 b of the crushing chip 31 is brought into contact with the lower surface support portion 41 while keeping the holding state, and the two adjacent side surfaces 31 c of the crushing chip 31 are formed on the two adjacent surfaces of the side surface support portion 43. Make contact. At this time, since the height of the side surface support portion 43 is lower than the thickness of the crushing tip 31, the upper surface side of the side surface 31c of the crushing tip 31 in contact with the side surface support portion 43 is exposed from the side surface support portion 43 and is sandwiched. A part of 31c is maintained in an exposed state. Therefore, alignment can be performed while holding the crushing tip 31.

  Next, a mounting bolt (not shown) is passed through the through hole 35c from the lower surface side of the fixed blade body 33, and at least a part of the flat side surface on the blade tip 31a side of the crushing tip 31 and at least a surface parallel to this side surface are exposed. A crushing tip 31 is screwed into the female thread portion 31d of the crushing tip 31 using a work tool in a state where a part is held by a wrench or the like from the outside and the crushing tip 31 is held. 41 is fixed.

  Moreover, in order to perform the crushing tip replacement work or the blade tip position changing or reversing work, the mounting bolts are loosened from the lower surface side of the fixed blade main body 33 by a work tool and are held using the exposed parts. The crushing tip 31 is held, the mounting bolt is removed while maintaining this state, the crushing tip 31 is detached from the base body 35, the position of the cutting edge 31a of the crushing tip 31 is changed or reversed, or the new crushing tip 31 is replaced. Then, the new cutting edge 31a is protruded and fixed again as described above.

  According to such a fixed blade structure 13, the crushing tip 31 has a flat side surface on the blade tip 31 a side and at least a part of a surface parallel to the side surface exposed, and the lower surface of the fixed blade body 33. Since it can fix to the support part 41, when fixing the crushing chip | tip 31 to the fixed blade main body 33, or when canceling | releasing fixation, at least one part of the flat side surface by the side of the blade edge | tip 31a, and a surface parallel to this side surface It is possible to hold the crushing tip 31 by sandwiching at least a part of the exposed portion from the outside with a wrench or the like. Therefore, it is possible to reliably and easily perform the attaching / detaching operation of the crushing tip 31 and the position changing or reversing operation of the blade edge.

  Moreover, since the fixed blade main body 33 has all the side surface support parts 43, the other member for comprising the side surface support parts 43 is unnecessary, and it can simplify a structure. Moreover, since the side support portion 43 is lower than the thickness of the crushing tip, a wide range of surfaces parallel to the flat side surface on the blade tip 31a side of the crushing tip 31 can always be exposed, and the crushing tip can be sandwiched from any direction. 31 can be held, and the attaching / detaching operation of the crushing tip 31 and the repositioning or reversing operation of the blade tip can be performed more easily.

It is a perspective view which shows the principal part of the shearing type crusher of 1st Embodiment which concerns on this invention. It is a top view which shows the principal part of the shearing type crusher of 1st Embodiment which concerns on this invention. It is an expansion perspective view showing a part of fixed blade structure of a 1st embodiment concerning the present invention. It is the disassembled perspective view seen from the upper surface side of the fixed blade structure of 1st Embodiment which concerns on this invention. It is the disassembled perspective view seen from the lower surface side of the fixed blade structure of 1st Embodiment which concerns on this invention. It is a perspective view explaining the attachment or detachment operation | work of the crushing chip | tip of the fixed blade structure of 1st Embodiment which concerns on this invention, or the position change or inversion operation | work of a blade edge | tip. It is an expansion perspective view which shows a part of fixed blade structure of 2nd Embodiment which concerns on this invention. It is a disassembled perspective view explaining the attachment or detachment operation | work of the crushing chip | tip of the fixed blade structure of 2nd Embodiment which concerns on this invention, or the position change or inversion operation | work of a blade edge | tip. It is a disassembled perspective view explaining the attachment or detachment operation | work of the crushing chip | tip of the fixed blade structure of 3rd Embodiment based on this invention, or the position change or inversion operation | work of a blade edge | tip. It is a figure explaining the position change or inversion work of the blade tip of the crushing tip of the fixed blade structure according to the third embodiment of the present invention. It is a perspective view explaining the attachment or detachment operation | work of the crushing chip | tip of the fixed blade structure of 4th Embodiment which concerns on this invention, or the position change or inversion operation | work of a blade edge | tip.

Explanation of symbols

DESCRIPTION OF SYMBOLS 11 Rotating blade structure 13 Fixed blade structure 23 Rotating blade 31 Crushing tip 31a Cutting edge 31c Side surface 33 Fixed blade main body 34 Mounting bolt 35 Base 37 Divided body 39 Support part 41 Lower surface support part 43 Side support part

Claims (8)

A plurality of crushing tips for crushing a crushing object with a combination corresponding to a plurality of rotary blades that are driven to rotate, a fixed blade main body that supports the plurality of crushing tips, and a fixing that fixes the crushing tip to the fixed blade main body The fixed blade body abuts and supports a lower surface support portion that abuts and supports the lower surface of the crushing tip, and a side surface of the crushing tip that is opposite to the cutting edge side facing the rotary blade. In a fixed blade structure provided with a side support portion to
The crushing tip is fixed to the lower surface support portion by the fixing tool in a state in which a part of a surface parallel to at least one flat side surface on the blade edge side is exposed. .   The said fixed blade main body was provided with the base | substrate which has the said lower surface support part, and the division body with which at least one part of the said side surface support part was mounted | worn with the said base | substrate. Fixed blade structure.   The base has a stepped recess in which the crushing chip is disposed, and the divided body is a plate-like body attached to the base, and the side surface is supported by a side surface of the stepped recess and a side surface of the divided body The fixed blade structure according to claim 2, wherein the portions are formed continuously.   The divided body includes a plurality of plate-like pieces, and the base has a plurality of stepped recesses in which the crushing chips are disposed, and a groove-like shape that opens into the plurality of stepped recesses and is mounted with the plate-like pieces. The fixed blade structure according to claim 2, further comprising a plurality of mounting portions, wherein the side surface support portions are continuously formed on a side surface of the divided body and a side surface of the stepped recess.   The fixed blade structure according to claim 2, wherein the divided body is integrally formed with a side support portion that contacts all the opposite side surfaces of the crushing tip.   2. The fixing according to claim 1, wherein the fixed blade main body is integrally formed with the lower surface support portion and the side surface support portion, and the side surface support portion is formed lower than a thickness of the crushing tip. Blade structure.   The said fixing tool consists of a mounting bolt, The said crushing chip | tip is provided with the internal thread with which the said mounting bolt is screwed together, The said lower surface support part is provided with the through-hole of the said mounting bolt, The 1 thru | or characterized by the above-mentioned. The fixed blade structure according to claim 6. A rotary blade structure in which a plurality of rotary blades are arranged so as to protrude around and rotated, and a fixed blade structure in which a plurality of cubic crushing chips are mounted facing the rotary blade structure side. In the shear type crusher,
The shear blade crusher, wherein the fixed blade structure includes the fixed blade structure according to any one of claims 1 to 7.

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