JP2010017638A - Structure for attaching fixed blade, chip-like fixed blade, and crushing apparatus - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide economical structure for attaching fixed blades which facilitates replacement work of the fixed blades, the chip-like fixed blades, and a crushing apparatus. <P>SOLUTION: In the structure for attaching the fixed blades 8 disposed in the turning path of a plurality of rotary blades fixedly disposed on the peripheral face of a crushing rotor rotating around a given axis, and meshed with the rotary blades for shear-crushing the crushing objects, a plurality of fixed blade support members 12 on which the plurality of fixed blades 8 are disposed are arrayed and fixed by bolts to level difference parts of a bench 5 disposed to face the crushing rotor so that the fixed blades 8 face the rotating blades, and a guide part is provided for separating the fixed blade support members 12 from the level difference parts without abutting on the crushing rotor. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention is a fixed blade that is arranged on a rotation path of a plurality of rotary blades arranged and fixed on a peripheral surface of a crushing rotor that rotates around a predetermined axis, and meshes with the rotary blades to shear and crush an object to be crushed. The present invention relates to a mounting structure, a chip-shaped fixed blade, and a crushing device.

  Conventionally, the crushing apparatus includes a crushing rotor in which a plurality of rotary blades arranged in the axial direction are fixed to a peripheral surface, and a plurality of fixed blades that mesh with the rotary blades as the crushing rotor rotates. Oppositely arranged along the center, the object to be crushed is crushed by the shearing action of the rotary blade and the fixed blade.

  In Patent Document 1, as shown in FIG. 11, a triangular shape is formed so as to mesh with a plurality of rotary blades formed in a square cross-sectional shape having a square section arranged in a spiral shape on the outer peripheral surface of the crushing rotor. A fixed blade 80 is disclosed in which a plurality of fixed blade portions 81 are formed on a long plate-like member, and formed as a saw blade as a whole.

  The fixed blade 80 is detachably attached and fixed to the stepped portion of the base plate 82 via bolts 83, and is configured so that it can be used by turning the front and back by forming the fixed blade portions 81 on both sides.

  However, in the configuration in which not only the fixed blade portion 81 but also the entire fixed blade 80 is integrally formed of an expensive material such as tool steel or cemented carbide, it can be said that the fixed blade 80 can be reversed and used as described above. If a part of the plurality of fixed blades 81 is worn or damaged to hinder the crushing of the object to be crushed, even if the remaining fixed blades 81 can be used sufficiently, the fixed blades 80 It was uneconomical because it needed to be replaced.

  In addition, the fixed blade has a downwardly descending shape toward the rotation axis of the crushing rotor with respect to the horizontal axis so that the rake face of the fixed blade and the rake face of the rotary blade form a certain shear angle at the start of shearing. Since the rake face of the fixed blade is configured to be in contact with and fixed to the stepped portion at a position shifted by a predetermined distance with respect to the rotation axis of the rotating shaft, when the fixed blade is removed, Since the lower part of the back of the fixed blade interferes with the stepped part, the replacement work is complicated.

Therefore, the present applicant, in Patent Document 2, as shown in FIG. 12, the steel fixing base member 90 and the cemented carbide cutting edge member 91 are joined together vertically with a joining metal such as copper, A plurality of fixed blades 93 each having a counterbore bolt hole 92 formed therethrough are inserted into the base frame 94 via hexagon socket bolts 95 so as to enter between the rotation paths of the rotation blades. A mounting structure of the fixed blade of the crushing device fixed detachably was proposed.
JP 2000-325810 A JP 2004-89876 A

  According to the fixed blade mounting structure of the crushing device described in Patent Document 2, when a part of the plurality of fixed blades 93 is worn or damaged and needs to be replaced, the fixed blade body However, it is possible to easily replace the fixed blade body 93. However, the manufacturing cost of the fixed blade body 93 is high, and the base frame 94 is formed from the fixed blade body 93 side. Since it cannot be used with the front and back sides being replaced, the running cost is high. Further, when the crushing apparatus is in operation, the material to be crushed is placed in the hexagonal hole of the bolt 95 or the counterbore part of the bolt hole 92. Improvements have been desired in that they are clogged and need to be removed during replacement.

  In view of the above-described problems, the present invention has an object to provide a fixed blade mounting structure, a fixed blade support member, a chip-shaped fixed blade, and a crushing device that are economical and easy to replace the fixed blade. To do.

  In order to achieve the above-mentioned object, the first characteristic configuration of the fixed blade mounting structure according to the present invention is the periphery of a crushing rotor rotating around a predetermined axis as described in claim 1 of the claims. A fixed blade mounting structure that is arranged in a rotation path of a plurality of rotary blades arranged and fixed on a surface and meshes with the rotary blades to shear and crush an object to be crushed, along the axial direction of the crushing rotor A fixed blade support member, in which a plurality of fixed blades are arranged, is arranged and fixed on a stepped portion of a base plate that is arranged to face the crushing rotor so that the fixed blade faces the rotary blade, and the fixed blade support It is in the point provided with the guide part for making a member detach from the level difference part.

  According to the above-described configuration, even when the fixed blade is installed below the rotation axis of the crushing rotor and the rake face of the rotary blade and the fixed blade are engaged with each other at a predetermined elevation angle, the guide blade is used to guide the rotary blade and the fixed blade. Since the fixed blade support member can be detached from the stepped portion while avoiding contact with each other, the replacement work is simplified.

  As described in the second aspect, in addition to the first characteristic configuration described above, the second characteristic configuration includes a chamfered portion in which a lower back portion of the fixed blade support member is inclined toward the crushing rotor. It is in the point that consists of.

  According to the above-described configuration, the chamfered portion formed in the lower back portion of the fixed blade support member can be attached and detached without contacting the base plate, so that the replacement work is simplified.

  In the third feature configuration, as described in claim 3, in addition to the first feature configuration described above, the guide portion is provided between a back surface of the fixed blade support member and a rising surface of the stepped portion. It is in the point comprised by the spacer block fixed detachably.

  According to the above-described configuration, the fixed blade support member can be easily attached and detached using the space between the back surface of the fixed blade support member formed by removing the spacer block and the rising surface of the stepped portion, so that the replacement work is simple. become.

  In the fourth feature configuration, as described in claim 4, in addition to any of the first to third feature configurations described above, the fixed blade support member has a concave shape that accommodates a plurality of fixed blades. Mounting seats are formed in an array, and chip-shaped fixed blades accommodated in the mounting seats are bolted from the back surface of the fixed blade support member.

  According to the above-described configuration, it is only necessary to form a female screw that meshes with the bolt on the fixed blade, and it is not necessary to create a counterbore that accommodates the head of the bolt, so that the thickness of the fixed blade can be reduced. Even if the fixed blade is worn, it can be used by rotating the front and back surfaces and 180 degrees. It is not necessary to use expensive materials such as tool steel and cemented carbide for the fixed blade support member, only the fixed blade may be used tool steel or cemented carbide, and even when the blade is worn, Since it can be used by rotating the front and back surfaces or 180 degrees, it is economical and the replacement work is also simple.

  In the fifth feature configuration, as described in claim 5, in addition to the fourth feature configuration described above, the rotary blade and the fixed blade each include a mountain-shaped blade portion, and the rotary blade and the fixed The fixed blade is arranged so that the blade portion of the blade meshes in an inclined posture, and the clearance between the locus of the rotary blade and the blade portion of the fixed blade accompanying the rotation of the crushing rotor is the width of the fixed blade. Each blade portion of the fixed blade is formed in a straight line so as to be minimized at the center portion of the blade width.

  According to the above-described configuration, an appropriate shearing force is obtained over the entire blade width of the object to be crushed when sheared and crushed between the rotating blade and the fixed blade rotating with the rotation of the crushing rotor. Therefore, it can be crushed very smoothly while rotating the crushing rotor with a small torque.

  In the sixth feature configuration, in addition to the fourth or fifth feature configuration described above, the fixed blade is configured such that the blade portion is formed by an edge portion where the front surface and the back surface intersect the side surface. It is composed of formed prisms and has an identification means for identifying the housing posture in the mounting seat.

  According to the above-described configuration, the fixed blade can be easily identified in the mounting position on the mounting seat by the identification means, and the type of the fixed blade can be identified by forming different identification means for the fixed blades having different shapes.

  In the seventh feature configuration, in addition to any one of the fourth to sixth feature configurations described above, the mounting seat has one blade portion of the rotary blade fixed to the fixed seat. Rake surfaces of adjacent fixed blades are different so that one blade portion of the blade portion is engaged from the blade base and the other blade portion of the rotary blade is engaged from the blade edge to the other blade portion of the fixed blade. It is in the point formed so that it may arrange at an angle.

  According to the configuration described above, first, one blade portion of the rotary blade meshes with one blade portion of the fixed blade portion from the blade base, and then the other blade portion of the rotary blade is the fixed blade. Since the blade edge meshes with the other blade part from the blade edge, the force always acts on the object to be crushed like a ridge at one point. Therefore, the crushing rotor is rotated with a small torque while crushing very smoothly. As a result, not only vibration and noise can be reduced, but also the power cost can be reduced.

  In the eighth feature, as described in claim 8, in addition to any one of the first to seventh features described above, the fixed blade support member may have the fixed blade with respect to the base. An attachment hole that meshes with an operation jig for attaching and detaching the support member is formed so as to be inclined to the back side.

  According to the configuration described above, the contact between the rotary blade and the fixed blade is avoided, and the fixed blade support member can be attached to and detached from the base plate, so that the replacement work is simplified.

  The characteristic configuration of the fixed blade supporting member according to the present invention is incorporated in the fixed blade mounting structure having any one of the first to eighth characteristic configurations described above, as described in claim 9 of the claims. There is in point.

  The first characteristic configuration of the chip-shaped fixed blade according to the present invention is that of the fixed blade having any one of the first to eighth characteristic configurations described above, as described in claim 10 of the claims. It is in that it is built into the mounting structure.

  In the second feature configuration, as described in claim 11 of the claims, in addition to the first feature configuration described above, four pairs of blade portions are formed by edge portions whose front and back surfaces intersect with the side surfaces. It is in the point comprised by the made prism.

  According to the above-described configuration, a new blade can be used four times in total by exchanging the front and back and front and rear of one fixed blade.

  The characteristic configuration of the crushing device according to the present invention includes a fixed blade mounting structure having any one of the first to eighth characteristic configurations as described in claim 12 of the document of the claims. It is in.

  As described above, according to the present invention, it is possible to provide a fixed blade mounting structure, a chip-shaped fixed blade support member, a fixed blade, and a crushing device that are economical and simple in replacement work. It became so.

Below, 1st embodiment of the attachment structure of the fixed blade by this invention, a chip-shaped fixed blade, and the crushing apparatus is described.
As shown in FIG. 1, the crushing device 1 includes a receiving hopper 2 that inputs an object to be crushed, such as electrical appliances, building waste materials, and plastic, and a crushing processing unit 3 that crushes the object to be crushed that has been input to the hopper 2. The pusher 4 for pressing the object to be crushed from the horizontal direction toward the crushing processing unit 3 is provided.

  The pusher pusher 4 is connected to the rear end of the pusher 4 by an arm 4a connected to a piston of a hydraulic cylinder that is expanded and contracted by pressure oil from a hydraulic pump (not shown), and slides on the base plate 5 and advances and retracts. Driven freely.

  The crushing processing unit 3 is disposed below the receiving hopper 2 and has a plurality of rotary blades provided with mountain-shaped blades arranged and fixed on the peripheral surface of a crushing rotor 6 that rotates around a predetermined axis by the power of the electric motor M. 7 and a fixed blade 8 having a mountain-shaped blade portion arranged in the rotation path of the rotary blade 7 mesh with each other, and the object to be crushed pushed by the push pusher 4 is sheared and crushed.

  Below the crushing processing unit 3, there are a screen mechanism 10 that selectively passes a material to be crushed by the crushing processing unit 3 to a predetermined size or less, and a discharge hopper 11 that receives the material to be crushed that has passed through the screen mechanism 10. Is provided.

  The screen mechanism 10 is formed of a punching metal that is curved in an arc shape along the rotation trajectory of the crushing rotor 6 and has a plurality of small holes. Among the objects to be crushed by the crushing processing unit 3, the screen mechanism 10. The object to be crushed having a diameter smaller than the small hole falls from the screen mechanism 10 and is accommodated in the discharge hopper 11.

Hereinafter, the crushing processing unit 3 described above will be described in detail.
As shown in FIG. 2 (a), the rotary blade 7 has a rake face formed of a square prism and a large number of V-shaped grooves 6v formed in parallel to each other at a predetermined pitch on the periphery of the crushing rotor 6. The plurality of mounting seats 6a formed therein are fastened with bolts 6b.

  As shown in FIG.2 (b), each rotary blade 7 is arrange | positioned so that what will be provided in the adjacent groove | channel 6v may become a zigzag shape, if the vertex is continued. As shown in FIG. 2C, the rotary blade 7 has a rake face in the direction of the rotational axis of the crushing rotor 6 so that the locus of the tip of the rotary blade 7 is farthest from the rotational axis of the crushing rotor 6. The angle θ is inclined with respect to the mounting.

  As shown in FIGS. 3A, 3 </ b> B, and 3 </ b> C, the fixed blade 8 is formed with four pairs of blade portions having an edge angle of γ by an edge portion where the front surface and the back surface intersect the side surface. When the cutting edge and the blade part are blunted due to friction with the object to be crushed, etc., the front and back, front and back of the fixed blade 8 are exchanged, and the new blade part among the four pairs of blade parts can be crushed. Has been. A notch 16 is formed as an identification means for identifying an accommodation posture in a mounting seat 13 (to be described later) at an edge where the side surfaces on the blade base side intersect.

  As shown in FIG. 4A, the fixed blades 8 are arranged along the end of the fixed blade support member 12 so that the edge where the notches 16 are formed is on the blade base side of the fixed blade 8. 4A. As shown in FIG. 4B, the fixed blade support member 12 has the fixed blade 8 and the rotary blade 7. Are fixed with bolts 15 from the upper surface to the stepped portion of the base plate 5 disposed so as to face the crushing rotor 6.

  Since the mounting seat 13 is formed in a concave shape so as to contact and support the back surface and the two side surfaces of the fixed blade 8 that do not face the crushing rotor 6, the mounting seat 13 cannot be inserted or is not inserted. Even if it can be done, it is rattling and the operator can easily recognize that the direction of the cutting edge is not appropriate, so that the operation of checking the direction of the cutting edge when mounting the fixed blade is simplified.

  In a state where the fixed blade 8 is fixed to the mounting seat 13, the bolt tip surface is substantially flush with the fixed blade, so that an object to be crushed is caught or caught in the bolt hole, and the female screw is deformed or damaged. The bolts can be easily attached and detached when the front and back surfaces are exchanged.

  As shown in FIGS. 5A and 5B, when the fixed blade 8 is arranged so that the blade portions of the rotary blade 7 and the fixed blade 8 are inclined at an angle δ and engaged with each other, as shown in FIGS. The locus of the blade portions 7 ′, 7 ″ of the rotary blade 7 whose blade edge angle is 90 degrees accompanying the rotation of the crushing rotor 6 with respect to the blade portions 8 ′, 8 ″ of the blades is a curve.

  As shown in FIG. 6 (a), when the blade edge angle of the fixed blade 8 is 90 degrees, the locus of the blade portions 7 ′, 7 ″ of the rotary blade 7 and the blade portions 8 ′, 8 ″ of the fixed blade 8 are shown. , The cutting edge side of the rotary blade 7 becomes smaller, the cutting edge side becomes larger, and the shearing force is biased toward the cutting edge side.

  Therefore, as shown in FIG. 6B, when the blade edge angle γ of the fixed blade 8 is set so that the gap is minimized at the center of the blade width of the blade portions 8 ′, 8 ″ of the fixed blade 8, The gap deviation is reduced, and the maximum shear force is obtained at the center of the blade width. When the angle δ is set to approximately 14.7 degrees, the blade edge angle γ is approximately 85 degrees.

  With the above-described configuration, the object to be crushed pressed toward the crushing processing unit 3 by the push pusher 4 is sheared and crushed between the rotary blade 7 and the fixed blade 8 that rotate as the crushing rotor 6 rotates. In this case, since the force always acts on the object to be crushed, the crushing rotor 6 can be rotated with a small torque, and the crushing rotor 6 can be crushed very smoothly, thereby reducing vibration and noise as well as reducing the power cost. become able to.

Next, replacement work of the fixed blade 8 will be described.
As shown in FIG. 4B, the lower portion of the back surface of the fixed blade support member 12 is chamfered as a guide portion on the crushing rotor 6 side, and an operation jig for attaching and detaching to the base plate 5 on the upper surface. A bolt hole 17 capable of meshing with the dimensioning bolt 18 is formed so as to incline to the back side.

  When replacing the fixed blade due to wear or chipping of the fixed blade 8, as shown in FIG. 7A, the bolt 15 for fixing the fixed blade support member 12 to the base 5 is removed and the bolt hole 17 is removed. The sizing bolt 18 is engaged. Thereafter, as shown in FIG. 7B, the dimensioning bolt 18 is erected, the fixed blade support member 12 is separated from the base plate 5, and the fixed blade support member 12 is mounted on the base as shown in FIG. 7C. Pull up from board 5. Thus, the fixed blade support member 12 can be easily attached and detached without the fixed blade 8 and the rotary blade 7 contacting each other. The fixed blade 8 is removed by replacing the bolt 14.

  Thus, since the lower part of the back surface of the fixed blade support member 12 is chamfered on the crushing rotor 6 side, the removal operation of the fixed blade support member 12 is facilitated while preventing contact between the rotary blade 7 and the fixed blade 8. .

  Also, if you prepare a replacement fixed blade support member that has already been fastened with a new fixed blade, simply replace the fixed blade support member and immediately resume operation without waiting for the replacement work of the fixed blade. it can.

  The guide portion is not limited to the configuration in which the lower portion of the back surface of the fixed blade support member 12 is chamfered on the crushing rotor 6 side, and as shown in FIG. 4 or a configuration in which the spacer 24 is fixed to the base 5 with bolts 25 on the back surface of the fixed blade support member 12 as shown in FIG.

  In this case, as shown in FIG. 7D, the bolt 25 is removed, the spacer 24 is removed from the base 5, the bolt 15 for fixing the fixed blade support member 12 to the base 5 is removed, and the bolt hole 17 is cut into pieces. The bolt 18 is engaged. Thereafter, the fixed blade support member 12 is shifted to the side opposite to the crushing rotor 6 as shown in FIG. 7 (e), and the fixed blade support member 12 is pulled up from the platform 5 as shown in FIG. 7 (c).

  Thus, by providing the guide portion, the fixed blade support member 12 can be easily attached and detached without the fixed blade 8 and the rotary blade 7 coming into contact with each other. The fixed blade 8 is removed by replacing the bolt 14. Therefore, it is not necessary to form the bolt hole 17 that can mesh the cutting bolt 18 so as to be inclined to the back side.

Below, 2nd embodiment of the attachment structure of the fixed blade by this invention, a chip-shaped fixed blade, and the crushing apparatus is described.
In the first embodiment, the case where the four fixed blades 8 are horizontally supported by the fixed blade support member 12 has been described. However, it is not always necessary to attach the fixed blades horizontally to the fixed blade support member. As shown in a), it may be a fixed blade support member 19 having alternately a fixed blade 8 with a rake face horizontal and a fixed blade 9 with a rake face having a predetermined elevation angle from the horizontal.

  In this case, as shown in FIGS. 3D, 3E, and 3F, the fixed blade 9 is constituted by a prism having a blade portion formed at an angle η by an edge portion where the front surface and the back surface intersect the side surface. In addition, a notch 21 is formed as an identification means for identifying the housing posture in the mounting seat 20 (described later) and identifying the fixed blade 8 at the edge where the side surface on the blade base side intersects.

  As shown in FIG. 10A, the fixed blades 8 and 9 are arranged at the end portions of the fixed blade support member 19 so that the edges formed with the notches 16 and 21 are on the blade base side of the fixed blades 8 and 9. 10 and accommodated in a plurality of concave mounting seats 13 and 20, and fastened with bolts 14 from the back surface of each mounting seat 13 and 20, as shown in FIG. 19 is fixed with bolts 15 from the upper surface to the base plate 5 disposed to face the crushing rotor 6 so that the fixed blades 8 and 9 face the rotary blade 7. At this time, identification means 22 and 23 corresponding to the notches 16 and 21 formed on the fixed blades 8 and 9 are formed on the mounting seats 13 and 20, respectively, so that the mounting posture of the fixed blades 8 and 9 can be easily identified. It becomes.

  The elevation angle β of the mounting seat 13 is set to 0 degrees, and the elevation angle α of the mounting seat 20 is set to a range of 20 degrees to 30 degrees, preferably a range of 20 degrees to 25 degrees, and more preferably about 23 degrees. ing.

  Since the mounting seats 13 and 20 are formed in a concave shape so as to contact and support the back surface and the two side surfaces of the fixed blades 8 and 9 that do not face the crushing rotor, the fixed blades 8 and 9 are respectively in the direction of the blade edge, or If the fixed blades 8 and 9 themselves are different, they cannot be inserted, or even if they can be inserted, they will rattle, so the operator can easily recognize that the direction of the blade edge is not appropriate, so check the blade edge direction when installing the fixed blade Becomes simple.

  As shown in FIG. 10A, the fixed blades 8 and 9 having different elevation angles are arranged corresponding to the blade portions 7 ′ and 7 ″ of the plurality of rotary blades 7 arranged in the axial direction of the crushing rotor 6. Will be. That is, the combination of one blade portion 8 ′ of the adjacent fixed blade 8 and one blade portion 9 ″ of the fixed blade 9, and the other blade portion 8 ″ of the fixed blade 8 and the other blade of the fixed blade 9. The crushing process is performed by the meshing of the portion 9 ′.

  The rotating blade 7 fixed to the crushing roller 6 is engaged with the fixed blade 9 whose elevation angle is set to the angle α from the blade edge to the blade edge as the crushing roller 6 rotates, and then the elevation angle is set to be horizontal. The fixed blade 8 is meshed from the blade tip to the blade base.

  The blade portions 7 ', 7 of the rotary blade 7 are the same as the relationship between the locus of the blade portions 7', 7 "of the rotary blade 7 and the gaps between the blade portions 8 ', 8" of the fixed blade 8 and the blade edge angle. The gap between the trajectory of '' and the blade portions 9 ', 9' 'of the fixed blade 9 is fixed so that the gap is minimized at the center of the blade width of the blade portions 9', 9 '' of the fixed blade 9. When the cutting edge angle η of the blade 9 is set, the deviation of the gap is reduced, and the maximum shearing force is obtained at the center portion of the blade width. When the angle α is set to approximately 23 degrees, the blade edge angle η is approximately 90.9 degrees.

  When the angle of elevation of adjacent fixed blades is made different as in the second embodiment, the rotary blade is engaged with the one fixed blade from the blade base, and the rotary blade is engaged with the other fixed blade from the blade tip, it is not necessarily rotated. The clearance between the locus of the blade portion and the blade portion of the fixed blade may not be set so as to be the minimum at the center portion of the blade width of the fixed blade.

  For example, as shown in FIG. 10 (b), the rotary blade 7 meshes with the fixed blade 9 set at the elevation angle α from the blade edge to the blade edge, so that the gap closer to the blade edge of the rotary blade 7 is minimum. As shown in FIG. 10C, the rotary blade 7 meshes with the fixed blade 8 set at the elevation angle β from the blade tip to the blade base, so that the gap is formed at the blade tip of the rotary blade 7. You may comprise so that the near one may become the minimum.

  If comprised in this way, since the shearing force can be made to act strongly at the beginning of the rotary blade 7 meshing with each of the fixed blades 8 and 9, it can be efficiently crushed without letting the material to be crushed escape. Conversely, when processing a sheet-like object to be crushed, it is possible to efficiently crush by applying a strong shearing force to the end of meshing between the fixed blades 8 and 9 and the rotary blade 7. Thus, the position where the gap becomes the minimum is appropriately set optimally depending on the object to be crushed.

  If comprised as mentioned above, it is not necessary to use expensive materials, such as tool steel and a cemented carbide, for a fixed blade support member, and only a fixed blade should use tool steel, a cemented carbide, etc. Even when worn, it can be easily replaced.

  Cutting edge angles γ, η, elevation angles α, β, and inclination angles θ, δ are not limited to the above-described examples, and each specific angle is derived from a positional relationship with a crushing rotor, a rotating blade, a fixed blade, and the like. Yes, when the object to be crushed is sheared by each blade portion, a force is always applied like a ridge at one point, and an angle at which the crushing rotor is rotated with a small torque is set appropriately.

  In the above-described embodiment, the configuration in which the fixed blade support member 12 includes the four fixed blades 8 has been described. However, the number of the fixed blades 8 included in the fixed blade support member 12 is not limited to four, but two or seven. It may be. It is set as appropriate so that the operation of removing the fixed blade support member does not become complicated.

  In the above-described embodiment, the configuration using the notch formed at the edge of the fixed blade as the identification means has been described. However, the identification means is not limited to the notch, and does not necessarily need to be formed at the edge. As long as the difference between the housing posture and the fixed blade can be identified. Specifically, as shown in FIG. 9, protrusions 27 are formed at the corners of the mounting seats 13 and 20, and are attached by engaging with chamfered portions 28 as identification means formed on the fixed blades 8 and 9. The structure which becomes accommodating in the seats 13 and 20 may be sufficient. Accordingly, the direction of the blade edge can be easily identified by the engagement between the protrusion 27 and the chamfered portion 28, and it becomes difficult to use a fixed blade having no chamfered portion.

  In embodiment mentioned above, although the level | step-difference part was formed in the base 5 and the structure which fixes the fixed blade support member 12 was demonstrated, the member which fixes the base 5 and the fixed blade support member 12 is formed separately, The structure used as a level | step difference part may be sufficient.

  In the above-described embodiment, the configuration in which the fixed blade is formed in a chip shape and fixed to the fixed blade support member has been described. However, a plurality of triangular fixed blades are integrally formed on a long plate-shaped fixed blade support member. The configuration may be a saw blade-like fixed blade as a whole.

  In the above-described embodiment, the configuration in which the fixed blade is fixed with the bolt from the back surface of the fixed blade support member has been described. However, the fixed blade has a counterbore that can accommodate the head of the bolt, and the fixed blade support member from the fixed blade side. You may comprise so that it may fix with a volt | bolt.

  With the above configuration, a fixed blade that is arranged on a rotation path of a plurality of rotary blades arranged and fixed on the peripheral surface of a crushing rotor that rotates around a predetermined axis, and meshes with the rotary blades to shear and crush an object to be crushed. The fixed blade support member in which a plurality of fixed blades are arranged along the axial center direction of the crushing rotor is mounted on the stepped portion of the base plate that is disposed to face the crushing rotor. A fixed blade mounting structure is provided which is arranged and fixed so as to face the rotary blade and includes a guide portion for detaching the fixed blade support member from the stepped portion.

  The specific configurations of the rotary blade, the fixed blade and the mounting seat, the fixed blade mounting structure, the fixed blade support member, and the crushing device that constitute the crushing processing unit described above are not limited to those described in the embodiment. Needless to say, the design can be changed as appropriate within the scope of the effects of the invention.

Schematic of the crushing device according to the invention (A) is an enlarged view of the main part of the crushing rotor, (b) is a schematic diagram of the crushing rotor. (A) is a plan view of the fixed blade, (b) is a front view of the fixed blade, (c) is a right side view of the fixed blade, (d) is a plan view of the fixed blade according to the second embodiment, (e) Is a front view of the fixed blade according to the second embodiment, (f) is a right side view of the fixed blade according to the second embodiment. (A) is a schematic view of a fixed blade support portion, (b) is a cross-sectional view of the fixed blade support portion, (c) is a cross-sectional view of the fixed blade support portion, and (d) is a cross-sectional view of the fixed blade support portion. Explanatory drawing of crushing processing unit (A) is explanatory drawing of the blade part of a rotary blade, and the blade part of a fixed blade, (b) explanatory drawing of the blade part of a rotary blade, and the blade part of a fixed blade (A) is the schematic of the fixed blade support part by 2nd embodiment, (b) is sectional drawing of the fixed blade support part by 2nd embodiment. (A) is a perspective view of the fixed blade support part by 2nd embodiment, (b) is explanatory drawing which attaches a fixed blade to the fixed blade support part by 2nd embodiment, (c) is by 2nd embodiment. , Illustration of rake angle of fixed blade Explanatory drawing of a fixed blade provided with the identification means by another embodiment, and a fixed blade support member (A) is explanatory drawing of the blade part of the rotary blade by 2nd embodiment, and the blade part of fixed blade, (b) is explanatory drawing of the blade part of 2nd embodiment rotary blade, and blade part of fixed blade, (C) is explanatory drawing of the blade part of 2nd embodiment rotary blade, and the blade part of a fixed blade. Explanatory drawing of conventional fixed blade mounting structure Explanatory drawing of conventional fixed blade mounting structure

Explanation of symbols

1: Crushing device 2: Receiving hopper 3: Crushing processing unit 4: Pushing pusher 4a: Arm 5: Base 6: Crushing rotor 6a: Mounting seat 6b: Bolt 6v: Groove 7: Rotary blades 7 ', 7'': Blade Portion 8: Fixed blade 8 ', 8'': Blade portion 9: Fixed blade 9', 9 '': Blade portion 10: Screen mechanism 11: Discharge hopper 12: Fixed blade support member 13: Mounting seat 14: Bolt 15: Bolt 16: Notch 17: Bolt hole 18: Dimensional cutting bolt 19: Fixed blade support member 20: Mounting seat 21: Notch 22: Identification means 23: Identification means 24: Spacer 25: Bolt 26: Notch 27: Projection 28: Chamfer α: Elevation angle β: Elevation angle γ: Angle η: Angle θ: Angle δ: Angle M: Electric motor

Claims (12)

It is a fixed blade mounting structure that is arranged on a rotation path of a plurality of rotary blades arranged and fixed on the peripheral surface of a crushing rotor that rotates around a predetermined axis, and that meshes with the rotary blades to shear and crush the object to be crushed. And
A fixed blade support member in which a plurality of fixed blades are arranged along the axial direction of the crushing rotor is arranged so that the fixed blade faces the rotary blade at a stepped portion of a base plate arranged to face the crushing rotor. A fixed blade mounting structure comprising a guide portion arranged and fixed, and having a guide portion for separating the fixed blade support member from the stepped portion.   The fixed blade mounting structure according to claim 1, wherein the guide portion includes a chamfered portion in which a lower back portion of the fixed blade supporting member is inclined toward the crushing rotor.   The fixed blade mounting structure according to claim 1, wherein the guide portion includes a spacer block that is detachably fixed between a back surface of the fixed blade support member and a rising surface of the stepped portion.   The fixed blade support member includes a plurality of concave mounting seats that individually accommodate a plurality of fixed blades, and the chip-shaped fixed blades housed in the mounting seats are bolted from the back surface of the fixed blade support member. Item 4. The fixed blade mounting structure according to any one of Items 1 to 3.   The rotary blade and the fixed blade are each provided with a mountain-shaped blade portion, and the fixed blade is disposed so that the rotary blade and the blade portion of the fixed blade mesh with each other in an inclined posture, and accompanying the rotation of the crushing rotor Each blade portion of the fixed blade is linearly formed so that a gap between the locus of the blade portion of the rotary blade and the blade portion of the fixed blade is minimized at the center portion of the blade width of the fixed blade. Item 5. A fixed blade mounting structure according to Item 4.   The said fixed blade is comprised by the prism which the said blade part was formed by the edge part which a surface and a back surface cross | intersect a side surface, and the identification means which identifies the accommodation attitude | position to the said mounting seat is formed. The fixed blade mounting structure described.   In the mounting seat, one blade portion of the rotary blade meshes with one blade portion of the fixed blade portion from the blade base, and the other blade portion of the rotary blade is in contact with the other blade portion of the fixed blade. The fixed blade mounting structure according to any one of claims 4 to 6, wherein the rake faces of adjacent fixed blades are arranged at different angles so as to engage with each other from the blade edge.   8. The fixed blade support member is formed so that an attachment hole that meshes with an operation jig for attaching and detaching the fixed blade support member to and from the base is inclined to the back side. The fixed blade mounting structure according to any one of the above.   A fixed blade support member incorporated in the fixed blade mounting structure according to claim 1.   A chip-like fixed blade incorporated in the fixed blade mounting structure according to claim 1.   The chip-shaped fixed blade according to claim 10, wherein the chip-shaped fixed blade is configured by a prism having four pairs of blade portions formed by edge portions whose front and back surfaces intersect with side surfaces.   The crushing apparatus provided with the attachment structure of the fixed blade in any one of Claim 1 to 8.

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