JP2011183306A - Mounting structure of rotary blade in crusher, and crusher using the same - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a mounting structure of a rotary blade in a crusher, in which material cost of a blade part is reduced and effective use of resources is attained by down-sizing a blade part and in which a rotary blade can be accurately and simply attached to and detached from a rotor. <P>SOLUTION: The mounting structure 22 of a rotary blade in a crusher includes: a rotor 14 to be rotated; a plurality of rotary blades 15 mounted on the surface of the rotor 14; and a fixed blade that is installed in a casing, shearing and crushing an object-to-be-crushed between the fixed blade and the number of rotary blades 15. The structure is configured to have a plurality of mounting grooves 20 which are installed in the surface of the rotor, which have a flat face in the bottom 26, and which are designed to mount the rotary blades 15 on the inside. The rotary blades 15 have a bottom face 33 formed as a flat face and have blades 29 for shearing and crushing the target object, wherein the blades 29 are formed to have nearly triangular shape in the front end face which is a front side, with the rotary direction of the rotary blades 15 as a reference. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention is a rotation of a crusher that shears and crushes objects to be crushed, such as waste wood, waste plastic, and waste paper, between a plurality of rotary blades attached to the surface of the rotor and a fixed blade provided in a fixed portion. The present invention relates to a blade mounting structure and a crusher using the blade mounting structure.

  An example of a conventional crusher is shown in FIGS. 17A and 17B (see, for example, Patent Document 1). In this crusher 1, a material to be crushed, such as waste wood and waste plastic, is separated between a plurality of rotary blades 3 attached to the surface of the rotor 2 and a fixed blade provided in a fixed portion (not shown). It is sheared and crushed. As shown in FIG. 17A, a plurality of plates 4 are detachably attached to the outer peripheral surface of the rotor 2 with bolts 5, and a plurality of attachment grooves 6 are formed on the surfaces of these plates 4. ing. The rotary blade 3 is welded and attached to each of the plurality of attachment grooves 6. Each of the plurality of rotary blades 3 is the same, and includes a holder 7 and a carbide tip 8.

  As shown in FIG. 17A, the holder 7 has a cemented carbide tip 8 attached to the upper part of the front end surface on the front side with reference to the rotation direction 9 of the rotary blade 3. The carbide chip 8 is detachably attached to the front end surface of the holder 7 with a bolt 10 and is a plate-like body having a substantially square front shape as shown in FIG.

  According to the crusher 1 shown in FIGS. 17 (a) and 17 (b), by rotating the rotor 2 in a predetermined direction 9, the object to be crushed is sandwiched between the plurality of rotary blades 3 and the fixed blades. Objects to be crushed can be sheared and crushed sequentially.

  If the crushing object 1 is sheared and crushed using the crusher 1 continuously for a certain period of time or more, cracks and chips may be generated at the tip of the cemented carbide chip 8. In such a case, the direction in which the cemented carbide tip 8 shown in FIG. 17 (b) is attached to the holder 7 is changed upside down. Thereby, the corner | angular part side in which the crack and notch | chip of the carbide | carbonized_material chip | tip 8 have not arisen can be used for shearing crushing.

JP 2004-275878 A

  However, in the conventional crusher 1 shown in FIGS. 17 (a) and 17 (b), cracks and chips generated in the cemented carbide tip 8 are almost formed over the bolt hole 8a. Even if the direction in which the cemented carbide tip 8 is attached to the holder 7 is turned upside down, a gap is formed between the cemented carbide tip 8 and the holder 7 and looseness is likely to occur, so that it is difficult to reuse. Furthermore, it may not be usable due to a decrease in strength of the cemented carbide tip 8.

  Therefore, even if the carbide chip 8 is formed as a plate-like body having a substantially square front shape as shown in FIG. 17B, the carbide chip 8 can actually be used on the upper side of the carbide chip 8 shown in FIG. In many cases, the substantially triangular portion of the lower half and the substantially triangular portion of the lower half cannot be used. In that case, about half of the material and material cost of the cemented carbide chip 8 are wasted. Furthermore, it is necessary to make the holder 7 large so that the cemented carbide chip 8 of such a size can be attached, and the material and material cost corresponding to that are wasted.

  The present invention has been made to solve the above problems, and by reducing the blade portion, it is possible to effectively use resources and reduce the material cost of the blade portion. An object of the present invention is to provide a rotary blade mounting structure for a crusher that can easily and accurately attach and detach the rotary blade to and from the rotor, and a crusher using the same.

  A rotating blade mounting structure for a crusher according to a first aspect of the present invention includes a rotor that rotates about a rotating shaft, a plurality of rotating blades that are mounted on the surface of the rotor, and a plurality of the rotating blades that are provided on a fixed portion. In a rotary blade mounting structure of a crusher provided with a fixed blade for shearing and crushing an object to be crushed with the rotary blade, provided on the surface of the rotor, the groove bottom is a flat surface, and the rotary blade is mounted inside The rotary blade has a bottom surface formed as a flat surface, and has a blade portion for shearing and crushing an object to be crushed, and the blade portion has a rotational direction of the rotary blade. The front end surface on the front side with respect to the reference is formed in a substantially triangular shape.

  According to the rotary blade mounting structure of the crusher according to the first invention, by rotating the rotor, the object to be crushed is sandwiched between the plurality of rotary blades and the fixed blade, and the object to be crushed is sequentially sheared. can do. And since the blade part provided in the rotary blade is formed in the substantially triangular shape in the front end surface of the rotary blade, compared with the case where a substantially square blade part is used, the magnitude | size of a blade part is about 1. / 2 and the material cost can be reduced to about ½. And even if the blade portion has a substantially triangular shape, the portion used for shearing and crushing the blade portion is a substantially triangular portion protruding outward from the outer peripheral surface of the rotor. And the same crushing ability can be demonstrated.

  By the way, when a plurality of rotary blades are attached to a plurality of attachment grooves formed on the surface of the rotor, the plurality of rotary blades are accurately positioned at predetermined positions and orientations on the rotor surface. In order to position and mount with high accuracy in this way, it is necessary to form the mounting groove with high accuracy. In this way, it is necessary to position each rotary blade accurately and attach it to the rotor because the rotor rotates and each of the plurality of rotary blades is to be crushed between the fixed blades. This is to enable efficient shearing and crushing.

  Therefore, according to the present invention, when each rotary blade is attached to the mounting groove, the bottom surface formed as a flat surface of the rotary blade is brought into contact with the bottom of the groove formed as a flat surface of the mounting groove. The mounting position and orientation of the rotary blade with respect to the rotor can be accurately determined. The reason why the positioning can be performed with high accuracy is that the bottom surface of the rotary blade and the bottom of the mounting groove are formed as flat surfaces, and such flat surfaces can be processed with high accuracy. is there.

  The rotating blade mounting structure for a crusher according to a second invention is characterized in that, in the first invention, the lower part of the outer peripheral surface of the side wall of the rotating blade is in contact with the inner surface of the mounting groove. .

  In this way, when the object to be crushed is sheared and crushed by the rotating blade and the fixed blade, a part of the force applied to the rotating blade is received by the inner surface of the mounting groove formed on the surface of the rotor, and the rotating blade is received. Can be held. In this way, the force applied to the rotary blade does not need to be held by other parts other than the rotary blade, the rotor, and a mounting means such as a bolt for attaching the rotary blade to the rotor. It is economical because the number of structural parts can be reduced. Since the number of parts is small, it is possible to reduce the labor of attaching / detaching the rotary blade to / from the rotor, and to shorten the attaching / detaching time.

According to a third aspect of the present invention, there is provided a rotary blade mounting structure for a crusher according to the first aspect, wherein the rotary blade mounting structure is attached to the inner side of the mounting groove so as to abut on the rear end surface on the rear side with reference to the rotational direction of the rotary blade. And a rear side contact block whose bottom surface is formed as a flat surface, and
One of the front contact blocks mounted on the inner side of the mounting groove and having a bottom surface formed as a flat surface so as to come into contact with the lower portion of the front end surface on the front side with respect to the rotation direction of the rotary blade Or both blocks.

  In this way, when the object to be crushed is sheared and crushed by the rotating blade and the fixed blade, a part of the force (reaction force of the crushing force) that turns the rotating blade backward is received by the rear contact block and rotated. The blade can be held. The front contact block can receive a part of the force in the direction in which the tip of the rotary blade on the blade side rises outward from the mounting groove, and can hold the tip of the rotary blade.

  In this way, the rear contact block and the front contact block can receive the force applied to the rotary blade during shearing and hold the rotary blade, so that the inner surface of the mounting groove, that is, the rotor is damaged by the rotary blade. Can be prevented. Note that the rear contact block and the front contact block are cheaper than the rotor and can be replaced as consumables. The operation of replacing the damaged rear side front block and front side front block with a regular one can be easily performed in a short time even by a beginner.

  According to a fourth aspect of the present invention, there is provided a rotary blade mounting structure for a crusher according to the third aspect of the present invention, wherein the rear contact block and the front contact block are configured as a holding block that is integrally connected to each other via a connecting portion. It is included, and the bottom surface of the holding block is formed as a flat surface.

  If it does in this way, since the connection part of a holding block interposes between the bottom face of a rotary blade and the groove bottom of an attachment groove, it can prevent that the groove bottom of an attachment groove, ie, a rotor, is damaged by a rotary blade. Since this holding block is cheaper than the rotor, it can be replaced as a consumable item. In addition, since the holding block is integrally formed by connecting the rear side and front side hitting blocks at the connecting portion, even a beginner can easily replace the damaged holding block with a regular one in a short time. be able to. Furthermore, since the bottom surface of the holding block is formed as a flat surface, the mounting position of each rotary blade with respect to the rotor can be accurately positioned as described above.

  According to a fifth aspect of the invention, in the third or fourth aspect of the invention, the rear contact block is provided with a protrusion, and the protrusion is based on the rotation direction of the rotary blade. And having a front end surface in contact with a rear end surface of a substantially triangular shape which is the rear side of the rotary blade.

  In this way, the front end surface of the projection provided on the rear contact block comes into contact with the substantially triangular rear end surface of the rotary blade, so that the rotary blade rotates when the object to be crushed is sheared and crushed by the fixed blade. Part of the force that turns the blade back (reaction force of crushing force) and part of the force in the direction in which the tip of the rotary blade rises outward from the mounting groove are received by this protrusion. be able to. Thereby, a rotary blade can be hold | maintained strongly and the trouble which arises from the play of the attachment with respect to the attachment groove | channel of a rotary blade can be prevented.

  The rotating blade mounting structure for a crusher according to a sixth aspect of the present invention is that, in the fifth aspect of the invention, the protrusion provided on the rear contact block has a front end surface that is the same size as the rear end surface of the rotating blade. It has a substantially semi-conical shape or a substantially semi-polygonal pyramid shape, which is a substantially triangular shape.

  Thus, by making the front end surface of the projection into a substantially triangular shape having the same size and shape as the rear end surface of the rotary blade, the projection can hold the rotary blade very strongly. And by making a protrusion into a substantially semi-conical shape or a substantially semi-polygonal cone shape, the protrusion which rotates with a rotary blade can make it difficult to contact with a to-be-crushed object, and increase in rotation resistance of a rotor. Can be prevented.

  The rotary blade mounting structure for a crusher according to a seventh aspect of the present invention is the rotary blade mounting structure according to any one of the first to sixth aspects, wherein the mounting groove is a dovetail groove whose width of the groove bottom is larger than the width of the opening. And the width of the lower part of the rotary blade is made larger than the width of the opening of the mounting groove.

  In this way, the dovetail can reliably prevent the rotary blade from being raised when a force is applied to the rotary blade in the direction of rising from the mounting groove toward the outside. Thereby, it is possible to make it difficult for the mounting blades to be attached to the attachment grooves.

  The rotary blade mounting structure for a crusher according to an eighth aspect of the present invention is the movement blocking mechanism for locking the rotary blade from moving in a direction away from the mounting groove in any of the third to seventh aspects of the invention. A portion is provided on a rear end surface of the rotary blade and a front end surface of the rear contact block in contact with the rear end surface.

  By doing in this way, when a force is applied to the rotating blade in a direction away from the mounting groove, the movement blocking unit can lock the movement of the rotating blade in a direction away from the mounting groove. it can. Thereby, it is possible to make it difficult for the mounting blades to be attached to the attachment grooves.

According to a ninth aspect of the present invention, there is provided the rotary blade mounting structure for a crusher according to the eighth aspect, wherein the movement preventing portion has an inclined surface on a rear end surface of the rotary blade and a front end surface of the rear contact block. The inclined surface is formed so as to approach the front end surface of the rotary blade from the bottom surface of the rotary blade and the bottom surface of the rear contact block toward the outside in the radial direction of the rotor, or
It has a convex part or a crevice formed in the rear end face of the rotary blade, and a crevice or a convex part formed in the front end face of the back contact block engaged with this convex part or crevice. Is.

  As described above, when the movement preventing portion is an inclined surface formed on the rear end surface of the rotary blade and the front end surface of the rear contact block, the movement of the rotary blade in the direction away from the mounting groove The inclined surface formed on the front end surface can be prevented by pressing the inclined surface formed on the rear end surface of the rotary blade toward the rotor.

  And if the movement prevention part is made into the engagement structure of the convex part formed in the rear end surface of a rotary blade and the front end surface of a rear side contact block, and a crevice, it will move that a rotary blade moves in the direction removed from a mounting groove. This can be prevented by the engagement between the convex portion and the concave portion.

  The rotary blade mounting structure for a crusher according to a tenth aspect of the present invention is the rotary blade mounting structure according to any one of the first to ninth aspects, wherein the rotary blade is detachably attached to the rotor by a bolt, and the blade portion is the rotation It is formed as an integral part of the blade, or is brazed to the main body of the rotary blade.

  If it does in this way, a plurality of each rotary blade can be easily attached or detached to a rotor in a short time by tightening or loosening a bolt. Therefore, the maintenance work of the rotary blade and the exchange work of the rotary blade can be easily performed in a short time. The blade portion is formed integrally with the rotary blade or brazed to the main body portion of the rotary blade, so that the coupling strength of the blade portion to the rotary blade can be increased, and the blade portion is the rotary blade. Can be prevented from falling off. As a result, it is possible to prevent the blade portion dropped from the rotary blade from damaging other normal blade portions.

  The rotating blade mounting structure for a crusher according to an eleventh aspect of the present invention is the invention of any one of the third to tenth aspects, wherein either one of the rear contact block and the front contact block, or both blocks Is attached to the rotor in a detachable manner with bolts.

  In this way, by tightening or loosening the bolts, the plurality of rear contact blocks and the front contact blocks can be easily attached to and detached from the rotor in a short time. Therefore, the maintenance work of the rotary blade and the exchange work of the rotary blade can be easily performed in a short time.

  A crusher according to a twelfth aspect of the present invention includes a rotor rotated about a rotation axis, a plurality of rotary blades attached to the surface of the rotor, and a plurality of rotary blades provided in a fixed portion. In the crusher provided with a fixed blade for shearing and crushing the material to be crushed, the rotary blade mounting structure of the crusher according to any one of the first to eleventh inventions as a structure for attaching the plurality of rotary blades to the surface of the rotor It is characterized by having applied.

  According to the crusher according to the present invention, by rotating the rotor, the object to be crushed can be sandwiched between the plurality of rotary blades and the fixed blade, and the object to be crushed can be sequentially sheared and crushed. And the rotary blade attachment structure of the crusher applied to this crusher acts similarly to the rotary blade attachment structure of the crusher of this invention.

  According to the rotary blade mounting structure of the crusher and the crusher according to the present invention, the blade portion provided on the rotary blade is formed in a substantially triangular shape on the front end surface of the rotary blade. Compared with the case of using, the size of the blade portion can be reduced to about ½, and the material and material cost can be reduced to about ½. Therefore, resources for manufacturing the blade portion can be used effectively, and the amount of waste when the blade portion is discarded can be reduced.

  The bottom surface of the rotary blade and the groove bottom of the mounting groove are flat surfaces, and such a flat surface can be processed with high accuracy, whereby a plurality of rotary blades are preliminarily determined on the rotor surface. It can be positioned and attached with high accuracy in the position and orientation.

  In addition, by making the bottom surface of the rotary blade and the groove bottom of the mounting groove flat without being V-shaped, the positioning accuracy of the rotary blade in the direction perpendicular to the surface of the rotor can be increased. This is because if the bottom of the mounting groove is a flat surface, the processing accuracy is easier to inspect than the V shape. As described above, if the vertical positioning accuracy can be increased, the positional relationship between each rotary blade and the fixed blade can be set with high accuracy, and as a result, the object to be crushed can be efficiently sheared and crushed. can do.

  Further, by bringing the bottom surface of the rotary blade into contact with the groove bottom of the mounting groove, it is possible to accurately position and mount each of the plurality of rotary blades at a predetermined position and orientation on the rotor surface. Even a beginner can easily perform maintenance work for a plurality of rotary blades or replacing a damaged rotary blade with a regular rotary blade in a short time. Therefore, the stop time of the crusher can be shortened, and the working efficiency of the crushing work can be improved.

It is a longitudinal section showing the crusher concerning a 1st embodiment of this invention. It is a perspective view showing a plurality of rotary blades attached to the surface of the rotor with which the crusher concerning the 1st embodiment is provided. It is a disassembled perspective view which shows the rotary blade attachment structure of the crusher which concerns on the 1st Embodiment. It is a figure which shows the rotary blade attachment structure of the crusher which concerns on the 1st Embodiment, (a) is a top view, (b) is a longitudinal cross-sectional view, (c) is a front view. It is a disassembled perspective view which shows the rotary blade attachment structure of the crusher which concerns on 2nd Embodiment of the invention. It is a figure which shows the rotary blade attachment structure of the crusher which concerns on 3rd Embodiment of the invention, (a) is a perspective view, (b) is a disassembled perspective view, (c) is a perspective view of an attachment groove | channel. It is a figure which shows the rotary blade attachment structure of the crusher which concerns on the same 3rd Embodiment, (a) is a top view, (b) is a longitudinal cross-sectional view. It is a figure which shows the rotary blade attachment structure of the crusher which concerns on 4th Embodiment of the invention, (a) is a perspective view, (b) is a disassembled perspective view, (c) is a longitudinal cross-sectional view. It is a figure which shows the rotary blade attachment structure of the crusher which concerns on 5th Embodiment of the invention, (a) is a perspective view, (b) is an exploded perspective view, (c) is a perspective view of an attachment groove. It is a figure which shows the rotary blade attachment structure of the crusher which concerns on the 5th Embodiment, (a) is a top view, (b) is a longitudinal cross-sectional view. It is a figure which shows the rotary blade attachment structure of the crusher which concerns on 6th Embodiment of the invention, (a) is a perspective view, (b) is a disassembled perspective view, (c) is a longitudinal cross-sectional view. It is a figure which shows the rotary blade attachment structure of the crusher which concerns on 7th Embodiment of the invention, (a) is a perspective view which shows a rotary blade and a rear side contact part, (b) is an exploded perspective view of (a), (C) is a perspective view of a mounting groove. It is a figure which shows the rotary blade attachment structure of the crusher which concerns on the 7th Embodiment, (a) is a perspective view, (b) is a top view, (c) is a longitudinal cross-sectional view. It is a longitudinal cross-sectional view which shows the rotary blade attachment structure of the crusher which concerns on 8th Embodiment of the same invention. It is a longitudinal cross-sectional view which shows the rotary blade attachment structure of the crusher which concerns on 9th Embodiment of the same invention. It is a longitudinal cross-sectional view which shows the rotary blade attachment structure of the crusher which concerns on 10th Embodiment of the same invention. It is a figure which shows the rotary blade attached to the conventional crusher, (a) is a longitudinal cross-sectional view, (b) is a front view.

  Hereinafter, a rotating blade mounting structure for a crusher according to the present invention and a crusher using the same will be described with reference to FIGS. 1 to 4. The crusher 11 is, for example, a uniaxial crusher, and is an apparatus that can crush an object to be crushed 12 such as waste wood, waste plastic, and waste paper into a predetermined size. The reason why the object 12 is crushed by the crusher 11 is to allow the object 12 such as waste to be recycled as boiler fuel or agricultural material.

  As shown in FIG. 1, the crusher 11 is provided in a casing 13, a rotor 14 disposed inside the casing 13, a plurality of rotary blades 15 attached to the surface of the rotor 14, and the casing 13. A fixed blade 16 disposed along the surface of the rotor 14, a hopper 17 attached to an upper portion of the casing 13, and a pusher 18 attached to a side portion of the casing 13 are provided.

  The casing 13 is a portion that serves as a base for supporting each of the above components. A housing space S having a substantially square shape in plan view for housing the object to be crushed 12 is formed inside the casing 13, and the rotor 14, the hopper 17, the pusher 18 and the like surround the housing space S. 13 is fixed.

  As shown in FIG. 2, the rotor 14 has a hollow cylindrical or solid columnar rotor body 14a, and rotating shafts 14b formed at the centers of both axial ends of the rotor body 14a. The rotating shaft 14b is rotatably supported by a bearing (not shown) attached to the casing 13. In this way, the rotor 14 is rotatably supported by the bearing. A drive motor (not shown) is connected to the rotating shaft 14b of the rotor 14 via a gear unit or the like. With this drive motor, the rotor 14 can be rotated in a predetermined direction 19.

  For example, a plurality of mounting grooves 20 are formed on the surface of the rotor body 14a so as to be arranged in a plurality of spirals, and one rotary blade 15 is attached to each of the mounting grooves 20 with a bolt 21. It has been. As a result, the number of rotary blades 15 aligned in a straight line in the axial direction of the rotor 14 is reduced, and each of the plurality of rotary blades 15 sandwiches the object to be crushed 12 with the fixed blade 16 and shears and crushes. When doing so, it is possible to prevent an excessive load from being applied to the fixed blade 16 and the rotor 14.

  The mounting groove 20 and the rotary blade 15 constitute a rotary blade mounting structure 22 (FIGS. 3 and 4) of the crusher, and specific configurations thereof will be described later.

  Further, as shown in FIG. 1, a part of the outer peripheral surface of the rotor body 14 a is arranged to face the accommodation space S in a state where the rotor 14 is rotatably supported inside the casing 13. The other part of the outer peripheral surface of the rotor body 14 a is covered with a screen 23. A large number of holes are formed in the screen 23, and the object to be crushed 12 is between the plurality of rotary blades 15 and the fixed blades 16 until the size of the large number of holes formed in the screen 23 becomes smaller. And repeatedly sheared. Accordingly, the size of the finally obtained crushed piece q can be adjusted by replacing the screen 23 with a different hole diameter.

  Further, a conveying device (not shown) such as a belt conveyor is disposed below the screen 23, and the crushed pieces q dropped through the holes of the screen 23 are conveyed to the next step by the conveying device. The

  As shown in FIG. 1, the fixed blade 16 crushes the object 12 to be crushed with a shearing force between the fixed blade 16 and is formed in a plate shape from a hard metal material or the like. As shown in FIG. 2, the fixed blade 16 includes a joint portion 24 and a plurality of blade portions 25 provided on the joint portion 24.

  As shown in FIG. 2, the joint portion 24 is a substantially rectangular plate-like body that is provided in parallel with the axial direction of the rotor body 14 a and has a length that is substantially the same as the length of the rotor body 14 a. The joint portion 24 is attached to the casing 13.

  The blade portion 25 is a substantially triangular plate-like body, and a plurality of blade portions 25 are fixedly attached to the edge portion of the joint portion 24 on the side facing the surface of the rotor main body 14a so as to continue along the edge portion.

  As shown in FIGS. 1 and 2, the fixed blade 16 configured as described above can sequentially shear and crush the object to be crushed 12 between the fixed blade 16 and each of the plurality of rotary blades 15. .

  The hopper 17 forms a supply port for supplying the material 12 to be crushed into the accommodation space S, and at least a part of the inner surface of the hopper 17 is inclined so that the supply port extends outward. Is formed.

  The pusher 18 crushes and crushes the object 12 to be crushed supplied from the hopper 17 into the housing space S between the plurality of rotary blades 15 and the fixed blades 16 (FIGS. 1 and 2). The pressure part 18a which presses the to-be-crushed object 12, and the drive part 18b which reciprocates the press part 18a in the direction approaching with respect to the crushing area | region Q, and the direction to pull apart.

  The configuration of the pusher 18 is not particularly limited, and can be arbitrarily selected from commonly known ones. Moreover, it is also possible to employ | adopt the structure which supplies the to-be-crushed object 12 to the crushing area | region Q using gravity, and the pusher 18 may be abbreviate | omitted in this case.

  In such a crusher 11, since it is necessary to attach many rotary blades 15 to the surface of the rotor 14, it is important that the attaching / detaching work is simple. Further, if the mounting position of the rotary blade 15 is displaced, the bolt 21 that attaches the rotary blade 15 to the rotor 14 may be damaged, or the plurality of rotary blades 15 and the fixed blade 16 may interfere with each other and be damaged. Therefore, when using the crusher 11, it is important to prevent the mounting positions of the rotary blades 15 from shifting. Therefore, in the present embodiment, the following rotary blade mounting structure 22 for a crusher is employed in order to satisfy these requirements.

  As shown in FIGS. 2 to 4, the crusher rotary blade mounting structure 22 includes a plurality of mounting grooves 20 formed on the surface of the rotor 14, and a rotary blade 15 mounted in each of the plurality of mounting grooves 20. It has.

  Each of the plurality of mounting grooves 20 is a substantially rectangular groove formed on the surface of the rotor 14 in parallel with the rotation direction 19 of the rotor 14 as shown in FIG. 2, and as shown in FIG. Twenty groove bottoms 26 are formed as flat surfaces. The inner peripheral side surface 27 of the mounting groove 20 is formed in a direction perpendicular to the groove bottom 26.

  As shown in FIG. 3, the rotary blade 15 is detachably attached to a mounting groove 20 formed on the surface of the rotor 14 by a bolt 21. As shown in FIG. 29.

  As shown in FIG. 3, the main body portion 28 includes an upper main body portion 30 and a lower main body portion 31, and the upper main body portion 30 and the lower main body portion 31 are integrally formed with each other. The upper main body 30 has a right isosceles triangular prism shape in which the apex angle α is formed at a substantially right angle. The lower main body portion 31 is a rectangular plate and is formed at the lower portion of the upper main body portion 30. The main body 28 is made of a metal material such as carbon steel.

  As shown in FIG. 3, the lower main body portion 31 has a front end surface 31 a that is the front side with respect to the direction 19 of rotation of the rotary blade 15 by the rotor 14 as a reference, and protrudes from the front end surface 30 a of the upper main body portion 30. Is formed. The blade portion 29 is brazed to the front end surface 30 a of the upper main body portion 30. The blade portion 29 is a plate-like body whose front shape is a substantially right-angled isosceles triangle. The front end surface of the blade portion 29 is disposed on the inner side (rear side) than the front end surface 31 a of the lower main body portion 31.

  Further, as shown in FIGS. 3 and 4A, chamfered portions 32 are formed in the four outer corner portions of the lower main body portion 31. Thus, when the rotary blade 15 is mounted in the rectangular mounting groove 20, the four outer corner portions of the lower main body portion 31 can be prevented from receiving interference from the four inner corner portions of the mounting groove 20. . As a result, the rotary blade 15 can be mounted and attached in the mounting groove 20 with the bottom surface 33 of the rotary blade 15 being in close contact with the groove bottom 26 of the mounting groove 20.

  Further, as shown in FIGS. 4A and 4B, the rotary blade 15 is mounted on the inner side of the mounting groove 20, and the outer peripheral side surface of the lower main body portion 31 is connected to the inner peripheral side surface 27 of the mounting groove 20. It is formed to abut. A through hole 34 extending in the depth direction of the mounting groove 20 is formed at the center of the main body 28, and a counterbore is formed at the outer end of the through hole 34.

  The blade portion 29 is formed of a metal material such as a cemented carbide and is a plate-like body having a substantially right isosceles triangle shape as shown in FIGS. 3 and 4C, and the front shape thereof is the upper body portion 30. The front end face 30a is formed in substantially the same shape and size. The front end surface of the blade portion 29 is disposed slightly inside (rearward) from the front end surface 31 a of the lower main body portion 31.

  However, in this embodiment, the blade portion 29 is brazed to the main body portion 28. However, instead of this, the blade portion 29 and the main body portion 28 can be made of the same material and integrated. .

  As shown in FIG. 4B, a screw hole 35 is formed in the groove bottom 26 of the mounting groove 20. The screw hole 35 allows the bolt 21 to be inserted into the through hole 34 of the rotary blade 15 and the tip of the bolt 21 to be screwed. In this way, the rotary blade 15 can be detachably fixed and attached in the attachment groove 20 formed on the surface of the rotor 14 by the bolt 21.

  Next, the operation of the crusher 11 will be described with reference to FIGS. When crushing the object to be crushed 12 using the crusher 11 shown in FIG. 1, the drive motor is driven to rotate the rotor 14 in a predetermined direction, and the object to be crushed 12 is received from the supply port of the hopper 17. Supply to the inside of the space S. Then, the pusher 18 can automatically operate to push the object 12 to be crushed into the crushing region Q. As a result, the object to be crushed 12 can be sandwiched between the plurality of rotary blades 15 and the fixed blades 16 attached to the surface of the rotor 14, and the object to be crushed 12 can be sequentially sheared and crushed. Then, the crushed pieces q of the crushed object 12 are rotationally transferred by the blade portions 29 of the plurality of rotary blades 15 and dropped onto the screen 23. When the crushed pieces q are smaller than the numerous holes formed in the screen 23, the crushed pieces q pass through the numerous holes and fall onto the transport device, and are transported to the next step by the transport device. The

  However, when the crushed piece q is larger than each hole formed in the screen 23, the crushed piece q stays between the rotor 14 and the screen 23, so that it is pushed by each rotary blade 15 into the accommodation space S. Returned.

  And as shown to Fig.4 (a), at the time of crushing, the forces N1 and N2 of the diagonal direction shown with a linear arrow act on the rotary blade 15 from the to-be-crushed object 12, These forces N1 and N2 are as follows. The rotary blade 15 is to be rotated about the bolt 21. Due to the force to be rotated, the rotary blade 15 is removed from the mounting groove 20, that is, the rotary blade 15 is raised. It is possible to prevent a force from being applied. As a result, it is possible to prevent looseness from being attached to the surface of the rotor 14 of the rotary blade 15 or damage to the bolt 21 due to a large force applied to the bolt 21.

  It should be noted that even when a force for rotating the rotating blade 15 around the bolt 21 is applied to the rotary blade 15 in this way, the force for the rotary blade 15 to rise from the mounting groove 20 does not work. As shown in (b) and (c), the groove bottom 26 of the mounting groove 20 is formed on a flat surface, and the bottom surface 33 of the main body 28 of the rotary blade 15 is also formed on a flat surface. This is because the component force in the direction to get up does not work.

  On the other hand, if the groove bottom of the mounting groove and the bottom surface of the main body are formed in a V shape, for example, a component force in the direction of rising with respect to the rotary blade 15 will work, and such a component force will not work. It is requested to be.

  Further, as shown in FIGS. 1 and 2, when the object to be crushed 12 is sheared and crushed by the rotary blade 15 and the fixed blade 16, the force applied to the rotary blade 15 is applied by a bolt 21 shown in FIG. The rotary blade 15 can be held by being received by the inner circumferential side surface 27 of the mounting groove 20 formed on the surface of the rotor 14.

  Thus, since it is not necessary to hold | maintain the force applied to the rotary blade 15 with components other than the rotary blade 15, the rotor 14, and the volt | bolt 21, the number of parts of the rotary blade attachment structure 22 of this crusher is reduced. Can be economical. Since the number of parts is small, it is possible to reduce the labor of attaching / detaching the rotary blade 15 to / from the rotor 14 and shorten the attaching / detaching time.

  Further, according to the rotary blade mounting structure 22 shown in FIGS. 4A, 4 </ b> B, and 4 </ b> C, the rotary blade 15 is attached to the rotor 14 by tightening or loosening the bolt 21 that fixes the rotary blade 15. Can be easily attached and detached in a short time. Therefore, the maintenance work of the rotary blade 15 and the exchange work of the rotary blade 15 can be easily performed in a short time.

  As shown in FIGS. 3 and 4C, the blade portion 29 provided on the rotary blade 15 is formed as a substantially right-angled isosceles triangular plate-like body. Compared with the case of using a body blade portion, the size of the blade portion 29 can be reduced to about ½, and the material cost can be reduced to about ½. Therefore, resources for manufacturing the blade portion 29 can be effectively used, and the amount of waste when the blade portion 29 is discarded can be reduced.

  And even if it makes the blade part 29 into a substantially triangular shape in this way, since the part used for the shearing crushing of the blade part 29 is a substantially triangular part which protrudes outside from the outer peripheral surface of the rotor 14, the blade part 29 is A crushing ability equivalent to that of a substantially rectangular one can be exhibited.

  By the way, when the plurality of rotary blades 15 are attached to the plurality of attachment grooves 20 formed on the surface of the rotor 14, the plurality of rotary blades 15 are placed at predetermined positions and orientations on the surface of the rotor 14. In order to be able to position and mount with high accuracy, it is necessary to form the mounting groove 20 with high accuracy. Thus, it is necessary to position each rotary blade 15 accurately and attach it to the rotor 14 because the rotor 14 rotates and each of the plurality of rotary blades 15 is connected to the fixed blade 16. This is because the material to be crushed 12 is sandwiched between them so that the material can be efficiently sheared and crushed.

  Therefore, according to the present invention, when each rotary blade 15 is attached to the mounting groove 20, the bottom surface 33 formed as the flat surface of the rotary blade 15 is changed to the groove bottom 26 formed as the flat surface of the attachment groove 20. By abutting, the mounting position and orientation of each rotary blade 15 with respect to the rotor 14 can be accurately determined. The reason why the positioning can be performed with accuracy is that the bottom surface 33 of the rotary blade 15 and the groove bottom 26 of the mounting groove 20 are flat surfaces, and such a flat surface can be processed with high accuracy. It is.

  Further, by making the bottom surface 33 of the rotary blade 15 and the groove bottom 26 of the mounting groove 20 flat, for example, not V-shaped, in particular, the positioning accuracy of the rotary blade 15 in the direction perpendicular to the surface of the rotor 14 is particularly good. Can be high. This is because if the groove bottom 26 of the mounting groove 20 is a flat surface, it is easier to inspect the processing accuracy than the V shape. Thus, if the vertical positioning accuracy can be increased, the positional relationship between the rotary blades 15 and the fixed blades 16 can be set with high accuracy. As a result, the object to be crushed 12 can be efficiently sheared and crushed. Can be able to.

  Further, the bottom surface 33 of the rotary blade 15 is brought into contact with the groove bottom 26 of the mounting groove 20 so that the plurality of rotary blades 15 are accurately positioned and attached to a predetermined position and orientation on the surface of the rotor 14. Therefore, even a beginner can easily perform a work for maintaining the plurality of rotary blades 15 and replacing the damaged rotary blades 15 with regular rotary blades 15 in a short time. Therefore, the stop time of the crusher 11 can be shortened, and the work efficiency of the crushing work can be improved.

  Next, with reference to FIG. 5, 2nd Embodiment of the rotary blade attachment structure of the crusher based on this invention is described. The crusher rotary blade mounting structure 37 according to the second embodiment shown in FIG. 5 is different from the crusher rotary blade mounting structure 22 according to the first embodiment shown in FIG. is there.

  In other words, in the first embodiment shown in FIG. 3, the chamfered portions 32 are formed at the four outer corners of the lower main body portion 31 of the rotary blade 15, thereby mounting the rotary blade 15 in the rectangular mounting groove 20. In this case, the four outer corners of the lower main body 31 are not affected by the interference of the four inner corners of the mounting groove 20.

  On the other hand, in the second embodiment shown in FIG. 5, the four outer corner portions of the lower main body portion 31 of the rotary blade 38 are not provided with the chamfered portions 32, and the right corner portions are formed. A substantially semi-cylindrical groove 40 extending outward is provided in the inner corner. Accordingly, when the rotary blade 38 is mounted in the rectangular mounting groove 39, the four outer corner portions of the lower main body portion 31 can be prevented from receiving the interference of the four inner corner portions of the mounting groove 39. . As a result, as in the first embodiment, the rotary blade 38 is mounted and fixed in the mounting groove 39 with the bottom surface 33 of the rotary blade 38 being in close contact with the groove bottom 26 of the mounting groove 39. Can do. Other than this, the second embodiment is the same as the first embodiment.

  Next, with reference to FIG.6 and FIG.7, 3rd Embodiment of the rotary blade attachment structure of the crusher which concerns on this invention is described. The rotary blade mounting structure 42 for the crusher according to the third embodiment shown in FIGS. 6 and 7 is different from the rotary blade mounting structure 22 for the crusher according to the first embodiment shown in FIG. In the first embodiment shown in FIG. 3, the front end surface 31a and the rear end surface of the lower main body portion 31 of the rotary blade 15 are in direct contact with the inner peripheral side surface 27 of the mounting groove 20, whereas FIG. In the third embodiment shown in FIG. 7, the front end surface 31 a and the rear end surface of the lower main body portion 31 of the rotary blade 43 are respectively connected to the inner periphery of the mounting groove 20 via the front side contact block 44 and the rear side contact block 45. The configuration is such that the side surface 27 abuts.

  That is, as shown in FIGS. 6 and 7, the front contact block 44 and the rear contact block 45 have the same shape as each other, and are formed in a substantially semi-cylindrical shape. The height of the lower main body 31 is the same. The upper surfaces 44a and 45a and the bottom surfaces 44b and 45b of the front and rear blocks 44 and 45 are formed as flat surfaces.

  As shown in FIG. 6 (c), the mounting groove 46 has an oval planar shape, and the depth thereof is the height of the front contact block 44, the rear contact block 45, and the lower main body portion 31. It is slightly larger than the dimensions, and is formed in a shape that can accommodate these parts and parts.

  6A, the flat side surfaces of the front contact block 44 and the rear contact block 45 are brought into contact with the front end surface 31a and the rear end surface of the lower main body 31 formed on the rotary blade 43, respectively. Indicates the state. FIG. 7A shows a state in which each of the rotary blade 15, the front contact block 44, and the rear contact block 45 shown in FIG. 6A is mounted in the mounting groove 46.

  Further, as shown in FIG. 7B, a through hole 47 is formed at the center of each of the front contact block 44 and the rear contact block 45, and a seat is formed at the upper end of each through hole 47. A bore is formed. Three screw holes 48, 35, 48 are formed in the groove bottom 26 of the mounting groove 46.

  The three screw holes 48, 35, 48 are inserted through the three bolts 49, 21, 49 into the through holes 47, 34, 47 of the rotary blade 15, front contact block 44, and rear contact block 45. Thus, the front ends of the respective bolts 49, 21, 49 can be screwed together. Thus, with these three bolts 49, 21, 49, the rotary blade 15, the front contact block 44, and the rear contact block 45 are detachably fixed in the mounting groove 46 formed on the surface of the rotor 14. Can be attached.

  In addition, as shown in FIG. 6B, the rotary blade 43 of the third embodiment is not provided with the chamfered portion 32 at each of the four outer corner portions of the lower main body portion 31. And the front end surface 31a of the lower main-body part 31 currently formed in the rotary blade 43 and the front end surface of the blade part 29 are formed so that it may be arrange | positioned in the same plane.

  According to the rotary blade mounting structure 42 of the crusher configured as described above, when the object to be crushed 12 is sheared and crushed by the rotary blade 43 and the fixed blade 16 as shown in FIG. A part of the force N (reaction force of the crushing force) that turns 43 toward the rear can be received by the rear contact block 45 fixed by the bolt 49 to hold the rotary blade 43. The front contact block 44 fixed with the bolt 49 can receive a part of the force in the direction in which the tip portion of the rotary blade 43 on the blade portion 29 side rises outward from the mounting groove 20. Can be held.

  Thus, the rear contact block 45 and the front contact block 44 can receive the force applied to the rotary blade 43 at the time of shear crushing and can hold the rotary blade 43, so that the inner peripheral side surface 27 of the mounting groove 46, that is, The rotor 14 can be prevented from being damaged by the rotary blade 43. The rear contact block 45 and the front contact block 44 are cheaper than the rotor 14 and can be replaced as consumables. The operation of replacing the damaged rear side contact block 45 and the front side contact block 44 with a regular one can be performed by attaching and detaching the bolts 49, and even a beginner can easily perform it in a short time. Therefore, the maintenance operation of the rotary blade 43 and the replacement operation of the rotary blade 43 can be easily performed in a short time. Other than this, the second embodiment is the same as the first embodiment.

  However, in this embodiment, as shown in FIGS. 7A and 7B, the rear contact block 45 and the front contact block 44 are provided. Instead, the rear contact block 45 or the front contact block 45 is provided. The hit block 44 may be omitted. When the front contact block 44 (or the rear contact block 45) is omitted, the front end surface 31a (or the rear end surface) of the lower main body portion 31 formed on the rotary blade 43 is connected to the front side (or the front side of the mounting groove 46 (or A mounting groove 46 is formed so as to come into contact with the inner surface on the rear side.

  Next, with reference to FIG. 8 (a), (b), (c), 4th Embodiment of the rotary blade attachment structure of the crusher based on this invention is described. The rotary blade mounting structure 51 of the crusher according to the fourth embodiment shown in FIGS. 8A, 8B and 8C, and the rotary blade of the crusher according to the third embodiment shown in FIGS. The third embodiment shown in FIGS. 6 and 7 differs from the mounting structure 42 in that the upper surface 45a of the rear contact block 45 is formed as a flat surface, whereas FIG. In the fourth embodiment shown in (b) and (c), the upper portion of the rear contact block 53 is formed by a protrusion 52.

  As shown in FIGS. 8A, 8 </ b> B, and 8 </ b> C, the protrusion 52 provided on the rear contact block 53 in this way has the rotary blade 54 with reference to the rotational direction of the rotary blade 54. It has a front end surface that comes into contact with a rear end surface on the rear side. The front end surface of the projecting portion 52 has a substantially right-angled isosceles triangle shape having the same size and shape as the rear end surface of the upper main body portion 30 formed on the rotary blade 15. Is formed in a substantially semi-conical shape. Therefore, the entire front end surface 53 a of the rear side contact block 53 is formed in a shape and size substantially coinciding with the rear end surface of the main body 28 constituting the rotary blade 54.

  According to the rotary blade mounting structure 51 of the crusher shown in FIGS. 8A, 8B, and 8C, the front end surface of the protrusion 52 provided on the rear contact block 53 constitutes the rotary blade 54. When the rotary blade 54 shears and crushes the object 12 to be crushed by the fixed blade 16 by coming into contact with the rear end surface of the main body 30, the force N (reaction force of the crushing force) that causes the rotary blade 54 to move rearward. Part of the force in the direction in which part and the tip of the rotary blade 54 on the blade portion 29 side rises outward from the mounting groove 46 can be received by the protrusion 52. As a result, the rotary blade 54 can be held strongly, and troubles caused by looseness of attachment of the rotary blade 54 to the mounting groove 46 can be prevented.

  Then, by making the front end surface of the protrusion 52 into a substantially right-angled isosceles triangle shape having the same size and shape as the rear end surface of the rotary blade 54, the rotary blade 54 is held extremely strongly by the protrusion 52. be able to. And the protrusion 52 which rotates with the rotary blade 54 can make it difficult to contact the to-be-crushed object 12 by making the protrusion 52 into a substantially semi-conical shape, and the increase in the rotational resistance of the rotor 14 is prevented. be able to. Other than this, the third embodiment is the same as the third embodiment.

  However, in this embodiment, as shown in FIGS. 8A, 8 </ b> B, and 8 </ b> C, the protrusion 52 provided on the rear contact block 53 has a substantially semiconical shape. A substantially semi-polygonal pyramid may be used.

  Next, with reference to FIG.9 and FIG.10, 5th Embodiment of the rotary blade attachment structure of the crusher based on this invention is described. The crusher rotary blade mounting structure 56 according to the fifth embodiment shown in FIGS. 9 and 10 is different from the crusher rotary blade mounting structure 42 according to the third embodiment shown in FIGS. 6 and 7. In the third embodiment shown in FIGS. 6 and 7, the rear contact block 45 and the front contact block 44 are formed as separate members, whereas the fifth embodiment shown in FIGS. In the embodiment, the rear contact block 45 and the front contact block 44 are included in the holding block 58 that is integrally connected to each other via the connecting portion 57, and the bottom surface 59 of the holding block 58 is formed as a flat surface. It is being done.

  10B, the connecting portion 57 of the holding block 58 is interposed between the bottom surface 33 of the rotary blade 43 and the groove bottom 26 of the mounting groove 46. It is possible to prevent the bottom 26, that is, the rotor 14 from being damaged by the rotary blade 43. Since the holding block 58 is inexpensive compared to the rotor 14, it can be replaced as a consumable item. Further, since the holding block 58 is formed integrally by connecting the front and rear contact blocks 44, 45 with the connecting portion 57, the work of replacing the damaged holding block 58 with a regular one can be performed even for beginners. It can be done easily in a short time. Furthermore, since the bottom surface 59 of the holding block 58 is formed as a flat surface, it is possible to accurately position the mounting positions of the rotary blades 43 with respect to the rotor 14 as in the above embodiments.

  As shown in FIGS. 9B and 10B, a through hole 60 through which the bolt 21 is inserted is formed in the connecting portion 57 constituting the holding block 58. Other than this, the third embodiment is the same as the third embodiment.

  Next, with reference to FIG. 11 (a), (b), (c), 6th Embodiment of the rotary blade attachment structure of the crusher which concerns on this invention is described. The crusher rotary blade mounting structure 61 according to the sixth embodiment shown in FIGS. 11 (a), 11 (b) and 11 (c), and the crushing according to the fifth embodiment shown in FIGS. 10 (a) and 10 (b). The difference from the rotary blade mounting structure 56 of the machine is that in the fifth embodiment shown in FIGS. 10 (a) and 10 (b), the upper surface 45a of the rear contact block 45 is formed as a flat surface. In the sixth embodiment shown in FIGS. 11A, 11 </ b> B, and 11 </ b> C, the upper surface of the rear contact block 62 is formed by the protrusion 52.

  Thus, the protrusion 52 provided on the rear contact block 62 is equivalent to the protrusion 52 described in the fourth embodiment shown in FIGS. 8A, 8B, and 8C. Since it acts similarly, the description is abbreviate | omitted. Other than this, the second embodiment is the same as the fifth embodiment, and the equivalent parts are denoted by the same reference numerals, and the description thereof is also omitted.

  However, in this embodiment, as shown in FIGS. 11 (a), (b), and (c), the protrusion 52 provided on the rear contact block 62 has a substantially semiconical shape. A substantially semi-polygonal pyramid may be used.

  Next, with reference to FIG.12 and FIG.13, 7th Embodiment of the rotary blade attachment structure of the crusher which concerns on this invention is described. The crusher rotary blade mounting structure 64 according to the seventh embodiment shown in FIGS. 12 and 13 is different from the crusher rotary blade mounting structure 42 according to the third embodiment shown in FIGS. 6 and 7. Is as follows.

  That is, in the third embodiment shown in FIGS. 6A, 6 </ b> B, and 6 </ b> C, in the mounting groove 46, the two inner surfaces parallel to the rotation direction of the rotary blade 43 are the groove bottom 26 of the mounting groove 46. It is formed in a direction perpendicular to the direction. In the lower main body 31 formed on the rotary blade 43, two outer surfaces parallel to the rotation direction of the rotary blade 43 are formed in a direction perpendicular to the bottom surface 33 of the rotary blade 43.

  On the other hand, in the seventh embodiment shown in FIGS. 12 and 13, in the mounting groove 65, the two inner side surfaces 67, 67 parallel to the rotation direction of the rotary blade 66 are in relation to the groove bottom 26 of the mounting groove 65. It is formed in a direction that forms an angle of about 45 ° inside. In the lower main body 68 formed on the rotary blade 66, the two outer surfaces 68 a and 68 a parallel to the rotation direction of the rotary blade 66 have an angle of about 45 ° inward with respect to the bottom surface 33 of the rotary blade 66. It is formed in the direction which comprises.

  In short, as shown in FIGS. 12B and 12C, the mounting groove 65 is a dovetail groove whose width W2 of the groove bottom 26 is larger than the width W1 of the opening, and the lower end of the rotary blade 66. The width W3 of the portion is configured to be larger than the width W1 of the opening of the mounting groove 65. The width W2 of the groove bottom 26 is formed larger than the width W3 of the lower end portion of the rotary blade 66.

  In the seventh embodiment, as shown in FIG. 13C, the front contact block 44 is omitted. Then, a bolt 69 for pushing up the rotary blade 66 and pressing the two outer side surfaces 68 a and 68 a of the rotary blade 66 against the two inner side surfaces 67 and 67 of the mounting groove 65 is provided. The bolt 69 is screwed into a screw hole 70 formed in the rotary blade 66. In addition, the groove bottom 26 of the mounting groove 65 is formed such that the bottom surface 71 of the rear end where the rear contact block 45 is mounted is deeper than the central portion where the bottom surface 33 of the rotary blade 66 contacts. Further, the rear contact block 45 is welded to the mounting groove 65, but may be detachably fixed with a bolt.

  In this way, when a force is applied to the rotary blade 66 shown in FIG. 13A in the direction of rising from the mounting groove 65 toward the outside, the dovetail groove that is the mounting groove 65 It is possible to reliably prevent getting up. As a result, it is possible to make it difficult for the rotary blade 66 to be loosely attached to the attachment groove 65.

  Other than this, the third embodiment is the same as the third embodiment. However, in this embodiment, as shown in FIGS. 13 (a), (b), and (c), the upper surface 45a of the rear contact block 45 is formed as a flat surface. ), (B), and (c) as shown in FIG. The protrusion 52 may have a substantially semi-conical shape or a substantially semi-polygonal pyramid shape.

  Next, with reference to FIG. 14, 8th Embodiment of the rotary blade attachment structure of the crusher which concerns on this invention is described. The rotating blade mounting structure 73 of the crusher according to the eighth embodiment shown in FIG. 14 is the same as the rotating blade mounting structure 51 of the crusher according to the fourth embodiment shown in FIG. A movement preventing portion 74 for stopping the movement in the disengagement direction is provided on the rear end surface of the rotary blade 54 and the front end surface 53a of the rear contact block 53 in contact with the rear end surface.

  The movement preventing portion 74 has a concave portion 74a formed on the rear end surface of the rotary blade 54 and a convex portion 74b formed on the front end surface 53a of the rear contact block 53 engaged with the concave portion 74a. is doing.

  By doing so, when a force is applied to the rotary blade 54 in a direction away from the mounting groove 46, the movement blocking unit 74 moves the rotary blade 54 in a direction away from the mounting groove 46. The protrusion 74b and the recess 74a can be prevented from engaging with each other. Thereby, it is possible to make it difficult for the rotary blade 54 to be loosely attached to the attachment groove 46. Except this, it is the same as that of the fourth embodiment, and the equivalent parts are denoted by the same reference numerals and the description thereof is omitted.

  And the rotary blade attachment structure 76 of the crusher which concerns on 9th Embodiment of this invention makes the convex part 74b which comprises the movement prevention part 74 the upper part of the front end surface of the back contact block 53, as shown in FIG. The concave portion 74a is formed over the entire upper portion of the rear end surface of the rotary blade 54 and is engaged with the convex portion 74b. Even if it does in this way, it acts similarly to the rotary blade attachment structure 73 of the crusher which concerns on 8th Embodiment shown in FIG. Except this, it is the same as that of the eighth embodiment, and the equivalent parts are denoted by the same reference numerals, and the description thereof is omitted.

  Moreover, as shown in FIG. 16, the crusher rotary blade mounting structure 78 according to the tenth embodiment of the present invention includes a movement blocking portion 79, a rear end surface of the rotary blade 54, and a front end surface of the rear contact block 53. Are inclined surfaces 79a and 79b. These inclined surfaces 79a and 79b rotate from the bottom surface 33 of the rotary blade 54 and the bottom surface 45b of the rear contact block 53 toward the outside in the radial direction of the rotor 14. It is formed so as to approach the blade portion 29 provided on the front end surface of the blade 54.

  Thus, when the movement preventing portion 79 is the inclined surfaces 79 a and 79 b formed on the rear end surface of the rotary blade 54 and the front end surface of the rear contact block 53, the rotary blade 54 moves in a direction away from the mounting groove 46. This can be prevented by the inclined surface 79b formed on the front end surface of the rear contact block 53 pressing the inclined surface 79a formed on the rear end surface of the rotary blade 54 toward the rotor 14 side. Except this, it is the same as that of the eighth embodiment, and the equivalent parts are denoted by the same reference numerals, and the description thereof is omitted.

  However, in each of the above-described embodiments, the blade portion 29 such as the rotary blade 15 is brazed to the main body portion 28. However, instead of this, for example, a bolt may be detachably attached.

  In each of the above embodiments, the blade portion 29 is a substantially right-angled isosceles triangular plate-like body, but other substantially triangular plate-like bodies can be used. In this case, the front shape of the upper main body formed in the main body is formed in a shape corresponding to the blade.

  As described above, the crusher rotary blade mounting structure according to the present invention and the crusher using the crusher aim to effectively use resources and reduce the material cost of the blade by reducing the blade. Furthermore, it has an excellent effect that the rotary blade can be easily and accurately attached to and detached from the rotor, and is suitable for application to the rotary blade mounting structure of such a crusher and a crusher using the same. ing.

DESCRIPTION OF SYMBOLS 11 Crusher 12 Object to be crushed 13 Casing 14 Rotor 14a Rotor main body 14b Rotating shaft 15, 38, 43, 54, 66 Rotary blade 16 Fixed blade 17 Hopper 18 Pusher 18a Press part 18b Drive part 19 Predetermined direction 20, 39, 46, 65 Mounting groove 21, 49, 69 Bolt 22, 37, 42, 51, 56 Crusher rotary blade mounting structure 61, 64, 73, 76, 78 Crusher rotary blade mounting structure 23 Screen 24 Fixed blade joint 25 Fixed blade edge 26 Mounting groove bottom 27 Mounting groove inner peripheral side 28 Rotary blade body 29 Rotary blade blade 30 Upper body 30a Front end 31 Lower body 31a, 53a Front end 32 Chamfer 33 Bottom surface of rotary blade 34, 47, 60 Through hole 35, 48, 70 Screw hole 40 Groove 44 Front side contact block 44a, 45a Upper surface 44 b, 45b, 59 Bottom surface 45, 53, 62 Rear contact block 52 Projection portion 57 Connection portion 58 Holding block 67 Inner side surface of mounting groove 68 Lower main body portion 68a Outer side surface 71 Bottom surface of rear end portion of mounting groove 74, 79 Movement Blocking part 74a Concave part 74b Convex part 79a, 79b Inclined surface

Claims (12)

A rotor that rotates about a rotation axis, a plurality of rotary blades attached to the surface of the rotor, and a fixed blade that shears and crushes a material to be crushed between the plurality of rotary blades provided in a fixed portion In the rotary blade mounting structure of the crusher comprising
Provided on the surface of the rotor, the groove bottom is a flat surface, and includes a plurality of attachment grooves to which the rotary blade is attached inside,
The rotary blade has a bottom surface formed as a flat surface, and has a blade portion for shearing and crushing an object to be crushed, and the blade portion is a front end surface that is a front side with respect to the rotation direction of the rotary blade. The rotary blade mounting structure of the crusher is characterized by being formed in a substantially triangular shape.   The rotating blade mounting structure for a crusher according to claim 1, wherein a lower portion of the outer peripheral surface of the side wall of the rotating blade is in contact with an inner surface of the mounting groove. A rear contact block that is attached to the inner side of the mounting groove so as to come into contact with the rear end surface that is the rear side with respect to the rotation direction of the rotary blade, and the bottom surface is formed as a flat surface, and
One of the front contact blocks mounted on the inner side of the mounting groove and having a bottom surface formed as a flat surface so as to come into contact with the lower portion of the front end surface on the front side with respect to the rotation direction of the rotary blade The rotary blade mounting structure for a crusher according to claim 1, further comprising: a block or both blocks.   The rear-side contact block and the front-side contact block are included in a holding block configured to be integrally coupled to each other via a connecting portion, and a bottom surface of the holding block is formed as a flat surface. A rotary blade mounting structure for a crusher according to claim 3.   The rear contact block is provided with a protrusion, and the protrusion has a front end surface that comes into contact with a rear end surface of a substantially triangle on the rear side of the rotary blade with reference to the rotation direction of the rotary blade. The rotary blade mounting structure for a crusher according to claim 3 or 4, characterized in that:   The projecting portion provided on the rear contact block has a substantially semi-conical shape or a substantially semi-polygonal pyramid whose front end surface is a substantially triangular shape having the same size and shape as the rear end surface of the rotary blade. The rotary blade mounting structure for a crusher according to claim 5, wherein:   The mounting groove is a dovetail groove whose width at the bottom of the groove is larger than the width of the opening, and the width of the lower portion of the rotary blade is larger than the width of the opening of the mounting groove. The rotary blade mounting structure for a crusher according to any one of claims 1 to 6.   A movement preventing portion for stopping the rotary blade from moving in a direction away from the mounting groove is provided on the rear end surface of the rotary blade and the front end surface of the rear contact block that contacts the rear end surface. The rotary blade mounting structure for a crusher according to any one of claims 3 to 7, wherein the rotary blade mounting structure is provided. The movement preventing part has a rear end surface of the rotary blade and a front end surface of the rear contact block as inclined surfaces, and the inclined surface is formed from the bottom surface of the rotary blade and the bottom surface of the rear contact block. It is formed so as to approach the front end surface of the rotary blade as it goes outward in the radial direction of the rotor, or
It has a convex part or a crevice formed in the rear end face of the rotary blade, and a crevice or a convex part formed in the front end face of the back contact block engaged with this convex part or crevice. The rotary blade mounting structure for a crusher according to claim 8. The rotary blade is detachably attached to the rotor by a bolt,
The rotary blade mounting of the crusher according to any one of claims 1 to 9, wherein the blade portion is formed integrally with the rotary blade or is brazed to a main body portion of the rotary blade. Construction.   The block according to any one of claims 3 to 10, wherein one or both of the rear-side contact block and the front-side contact block are detachably attached to the rotor by bolts. The rotary blade mounting structure of the crusher described in 1. A rotor that rotates about a rotation axis, a plurality of rotary blades attached to the surface of the rotor, and a fixed blade that shears and crushes an object to be crushed between the multiple rotary blades provided in a fixed portion A crusher comprising:
The crusher characterized by applying the rotary blade attachment structure for a crusher according to any one of claims 1 to 11, as a structure for attaching the plurality of rotary blades to the surface of the rotor.

Images