Blade for crusher and crusher using the blade

Abstract

To solve the problem in that, conventionally, there have been known a blade for a crusher for crushing a target object such as a sprue, a sprue runner, or a weir, which has become unnecessary, and also known a crusher using the blade; however, when the target object is crushed, the finely crushed target object is likely to be sandwiched between a side surface of the crusher and the blade; and if a moving blade is moved forward in such a state, the side surface of the crusher may be pushed, resulting in damage to the crusher.SOLUTION: The present invention provides a blade for a crusher in which a plurality of blade portions protrude from a surface of a blade plate, wherein each of the blade portions is a mountain-shaped blade portion and / or a notched, truncated, conical blade portion, the mountain-shaped blade portions and / or the notched, truncated, conical blade portions are arranged in a staggered manner, and inclined portions, in which surfaces on both left and right end sides of the blade plate are inclined inward, are provided. A crusher using the blade is also provided.SELECTED DRAWING: Figure 1

Description

[Technical field]

[0001] The present invention relates to a blade for a crusher for crushing objects to be crushed, and to a crusher utilizing this blade. [Background technology]

[0002] Crushers are widely known for crushing materials to be crushed, such as unnecessary casting products, sprues, runners, dams, etc. In these crushers, the materials to be crushed are put into the crushing space between the fixed blades and the movable blades, and are crushed into small pieces by the movable blades as the movable blades move forward. In order to achieve efficient crushing of the materials to be crushed, the blades used in the crusher are particularly important.

[0003] When crushing objects to be crushed, the objects to be crushed may become caught between the side of the crusher and the blades, and if the moving blades are advanced in this state, the side of the crusher may be pushed and the crusher may be damaged. Here, the following Document 1 is an example of a document related to a blade for a crusher that crushes objects to be crushed, characterized by preventing the objects from being caught between the sides of the crusher.

[0004] The invention according to the document 1 is a cutting tool used for obtaining secondary crushed material by further finely crushing the primary crushed material obtained by primary crushing of a waste engine using a nibbler to separate the primary crushed material into aluminum-based materials and iron-based materials, characterized in that the cutting tool has a flat portion and a plurality of grooves that are spaced apart in the width direction of the flat portion and extend from one end of the planar portion to the middle portion in the longitudinal direction of the flat portion, the flat portion being formed in a rectangular shape, and at both ends in the width direction of the flat portion, protruding portions that protrude from the planar portion are formed to extend almost the entire length of the planar portion in the longitudinal direction. As described in paragraph number

[0062] , the cutting tool has an effect that "the protruding portions 27 are formed at both ends in the width direction of the cutting tools 5 and 8, and therefore the crushed material can be prevented from escaping to the outside of the cutting tools 5 and 8 in the width direction (the crushed material can be prevented from pushing the wall member 31 of the housing 3 shown in FIG. 6) due to the obstruction of each of the protruding portions 27."

[0005] [Patent Document 1] Patent Publication No. 2006-263526 Summary of the Invention [Problem to be solved by the invention]

[0006] However, in the invention of Document 1, protruding portions are formed at both ends of the width direction of the planar portion so as to extend over almost the entire length of the planar portion in the longitudinal direction, but such a configuration is likely to be large-scale and expensive. [Means for solving the problem]

[0007] SUMMARY OF THE PRESENT EMBODIMENTS The present invention provides a blade for a crusher that can prevent objects to be crushed from getting caught between the sides of the crusher with a simple structure, and a crusher equipped with this blade.

[0008] The invention of claim 1 is a blade for a crusher having a plurality of blade portions protruding from the surface of a blade plate, the blade portions being angled blade portions and / or notched truncated cone blade portions, the angled blade portions and / or notched truncated cone blade portions being arranged in a staggered pattern, and the surfaces of both ends of the blade plate in the left and right directions being provided with inclined portions that are inclined inwardly.

[0009] The invention of claim 2 is the blade for a crusher according to claim 1, characterized in that the inclined portion is located below the center of the blade in the up-down direction.

[0010] The invention of claim 3 is the blade for a crusher according to claim 1 or 2, characterized in that the inclined portion is provided with a rib-like piece.

[0011] The invention of claim 4 is a blade for a crusher as described in claim 1 or claim 2, characterized in that the surface of the blade plate is further provided with a plurality of rib-shaped blade portions and / or cross blade portions, and the rib-shaped blade portions and / or cross blade portions are connected to mountain-shaped blade portions and / or notched truncated cone-shaped blade portions.

[0012] The invention of claim 5 is a blade for a crusher as described in claim 3, characterized in that the surface of the blade plate further comprises a plurality of rib-shaped blade portions and / or cross blade portions, and the rib-shaped blade portions and / or cross blade portions are connected to mountain-shaped blade portions and / or notched truncated cone-shaped blade portions.

[0013] The invention of claim 6 is the cutter for a crusher according to claim 1 or 2, characterized in that the cutter is made of high manganese cast steel containing 11% to 14% by mass of manganese.

[0014] The invention of claim 7 is the cutter for a crusher according to claim 3, characterized in that the cutter is made of high manganese cast steel containing 11% by mass to 14% by mass of manganese.

[0015] An invention of claim 8 relates to the cutter for a crusher according to claim 4, characterized in that the cutter is made of high manganese cast steel containing 11% by mass to 14% by mass of manganese.

[0016] The invention of claim 9 is the cutter for a crusher according to claim 5, characterized in that the cutter is made of high manganese cast steel containing 11 mass % to 14 mass % manganese.

[0017] The invention of claim 10 is a crusher comprising a pair of left and right main body frames, fixed blades arranged between the main body frames, and movable blades that move back and forth relative to the fixed blades, and having an upper opening portion into which the material to be crushed is fed and a lower opening portion from which the material to be crushed is discharged, characterized in that the fixed blades and / or the movable blades are the blades described in claim 1 or claim 2.

[0018] The invention of claim 11 is a crusher comprising a pair of left and right main body frames, fixed blades arranged between the main body frames, and movable blades that move back and forth relative to the fixed blades, and having an upper opening portion into which the material to be crushed is fed and a lower opening portion from which the material to be crushed is discharged, characterized in that the fixed blades and / or the movable blades are the blades described in claim 3.

[0019] The invention of claim 12 is a crusher comprising a pair of left and right main body frames, fixed blades arranged between the main body frames, and movable blades that move back and forth relative to the fixed blades, and having an upper opening portion into which the material to be crushed is fed and a lower opening portion from which the material to be crushed is discharged, characterized in that the fixed blades and / or the movable blades are the blades described in claim 4.

[0020] The invention of claim 13 is a crusher comprising a pair of left and right main body frames, fixed blades arranged between the main body frames, and movable blades that move back and forth relative to the fixed blades, and having an upper opening portion into which the material to be crushed is fed and a lower opening portion from which the material to be crushed is discharged, characterized in that the fixed blades and / or the movable blades are the blades described in claim 5.

[0021] The invention of claim 14 is a crusher comprising a pair of left and right main body frames, fixed blades arranged between the main body frames, and movable blades that move back and forth relative to the fixed blades, and having an upper opening portion into which the material to be crushed is fed and a lower opening portion from which the material to be crushed is discharged, characterized in that the fixed blades and / or the movable blades are the blades described in claim 6.

[0022] The invention of claim 15 is a crusher comprising a pair of left and right main body frames, fixed blades arranged between the main body frames, and movable blades that move back and forth relative to the fixed blades, and having an upper opening portion into which the material to be crushed is fed and a lower opening portion from which the material to be crushed is discharged, characterized in that the fixed blades and / or the movable blades are the blades described in claim 7.

[0023] The invention of claim 16 is a crusher comprising a pair of left and right main body frames, fixed blades arranged between the main body frames, and movable blades that move back and forth relative to the fixed blades, and having an upper opening portion into which the material to be crushed is fed and a lower opening portion from which the material to be crushed is discharged, characterized in that the fixed blades and / or the movable blades are the blades described in claim 8.

[0024] The invention of claim 17 is a crusher comprising a pair of left and right main body frames, fixed blades arranged between the main body frames, and movable blades that move back and forth relative to the fixed blades, and having an upper opening portion into which the material to be crushed is fed and a lower opening portion from which the material to be crushed is discharged, characterized in that the fixed blades and / or the movable blades are the blades described in claim 9. Effect of the Invention

[0025] According to the present invention, during crushing, the material to be crushed on the end side of the blade slides inside the blade due to the inclined portion, so that the output of the blade, particularly the cylinder on both sides of the blade, can be significantly attenuated. [Brief description of the drawings]

[0026] [Figure 1] FIG. 11 is a front view of a fixed blade in which an inclined portion is provided below the blade plate in the up-down direction. [Diagram 2] FIG. 2 is a perspective view of FIG. [Diagram 3] FIG. 11 is a front view of a movable blade in which an inclined portion is provided below the blade plate in the up-down direction. [Figure 4] FIG. 4 is a perspective view of FIG. [Diagram 5] 2 is a cross-sectional view taken along line AA in FIG. 1. [Figure 6] FIG. 13 is a front view of a fixed blade having a rib-shaped piece on an inclined portion. [Figure 7] FIG. 2 is a front view of a first embodiment of a angle-shaped blade portion and a rib-shaped blade portion. [Figure 8] FIG. 11 is a front view of a second embodiment of a angle-shaped blade portion and a rib-shaped blade portion. [Figure 9] FIG. 2 is a front view of a fixed blade having a notched truncated cone blade portion and a rib-shaped blade portion protruding therefrom. [Figure 10] FIG. 2 is a perspective view of a crusher equipped with a fixed blade plate and a movable blade plate. [Figure 11] FIG. 4 is a side view of the crusher illustrating the trajectory of the moving blade plate. [Figure 12] FIG. 2 is a side view of the main part of a crusher for crushing objects to be crushed. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

[0027] The present invention relates to a blade 1 for a crusher 100 capable of finely crushing objects to be crushed CM, such as unnecessary casting products, sprues, runners, and dams, and a crusher 100 using this blade 1. First, the blade 1 will be described.

[0028] The blade 1 is composed of a pair of fixed blades 11 (see Figs. 1, 2, etc.) fixed to the front side F of the crusher 100, and a movable blade 12 (see Figs. 3, 4, etc.) that is installed facing the fixed blade 11 at the rear side B of the crusher 100. The fixed blade 11 and the movable blade 12 are arranged between a pair of left and right main body frames 110, 110 of the crusher 100, and the movable blade 12 that moves back and forth relative to the fixed blade 11, more specifically, the blade portion 10 of the fixed blade 11 and the blade portion 10 of the movable blade 12, crush the object to be crushed CM. The fixed blade 11 and the movable blade 12 may be configured to be separable into upper and lower portions, or may be configured to be integrally molded.

[0029] This blade 1 is composed of a blade plate 3 and a plurality of blade portions 10 protruding from a surface 5 of the blade plate 3. The blade plate 3 is formed as a rectangular parallelepiped plate, but the length, thickness, etc. are optional. The shape is also optional, so the lower end side of the blade plate 3 may be curved.

[0030] As described below, the blade section 10 includes a mountain-shaped blade section 20, a notched truncated cone-shaped blade section 50, a cross blade section 40, a ribbed blade section 60, etc., which can be used in any combination. The configuration and arrangement of each blade section 10 will be described below for each blade section 10. Note that the blade section 10 is common to both the fixed blade 11 and the movable blade 12, so it is denoted by the same reference numeral in each drawing.

[0031] A first embodiment of the angled cutting portion 20 shown in Figures 1, 7, etc. will be described. The angled cutting portion 20 of the first embodiment is composed of a base portion 22 and a flat top portion 30, and the base portion 22 has a rectangular blade 26 disposed along both slopes 23, 23 between the slopes 23 that slope toward the flat top portion 30, and the flat top portion 30 has a plurality of inclined recesses 34 that form the rectangular blade 26 in a cross shape.

[0032] The shape that constitutes the angled cutting portion 20 is a composite polyhedron that combines a deformed square (slope 23), a triangle (inclined recess 34), a rectangle (rectangular blade 26), a cross (rectangular blade 26 formed on flat top 30), etc. on its surface. The angled cutting portion 20 is flared in shape from the flat top 30 side to the surface 5 side of the blade plate 3, and is formed so that its height gradually increases toward the flat top 30 side.

[0033] As described above, the base portion 22 has rectangular blades 26 arranged along the slopes 23, 23 between the slopes 23 that slope toward the flat top portion 30, forming one set. A total of four such sets are arranged in a row vertically and horizontally to form one angled blade portion 20. Therefore, one angled blade portion 20 has a total of eight slopes 23 and four rectangular blades 26. In the base portion 22 as a whole, the four rectangular blades 26 form four ridges.

[0034] The flat top portion 30 has a plurality of inclined recesses 34 that form the rectangular blade 26 in a cross shape. In other words, the rectangular blade 26 is formed in a cross shape by the combination of the bases of the inclined recesses 34.

[0035] The inclined recess 34 is formed by inclining and recessing a portion of the inclined surface 23 on the flat top portion 30 side. Specifically, for example, a portion of the inclined surface 23 is recessed (inclined) into a triangular shape or the like. Since one mountain-shaped blade portion 20 has a total of eight inclined surfaces 23, the number of inclined recesses 34 is also eight in total.

[0036] The inclined recess 34 may be configured as an inclined surface having a substantially triangular shape, or may be configured as an inclined surface having a substantially rectangular or hemispherical shape. The inclined recess 34 may be configured as a vertical surface instead of an inclined surface. In short, any configuration may be used as long as the rectangular edge 26 of the flat top portion 30 is formed into a cross shape by the inclined recess 34, which makes it easier for stress concentration to be applied to the object to be crushed CM and allows it to be crushed (cut, etc.) more efficiently.

[0037] Regarding the relationship between the rectangular blade 26 of the base portion 22 and the rectangular blade 26 formed in a cross shape of the flat top portion 30, one end of the rectangular blade 26 of the base portion 22 and one end of the cross of the rectangular blade 26 of the flat top portion 30 are connected, but they may also be unconnected.

[0038] In each drawing, the angled cutting portion 20 of the first embodiment is mainly shown, but it may be the angled cutting portion 20 of the second embodiment shown in Fig. 8. The angled cutting portion 20 of the second embodiment will be described.

[0039] The mountain-shaped blade portion 20 of the second embodiment consists of a base portion 22 and a pointed apex 32, and the base portion 22 has a pointed blade 28 arranged along both slopes 23, 23 between the slopes 23 that slope toward the pointed apex 32, and the pointed apex 32 has a plurality of inclined recesses 34 that form the pointed blade 28 in a cross shape.

[0040] The shape constituting the angled cutting portion 20 is formed as a complex polyhedron combining a deformed rectangle (slope 23), a triangle (inclined recess 34), a cross (pointed edge 28 formed at the point apex 32), etc. on its surface. Like the angled cutting portion 20 of the first embodiment, the angled cutting portion 20 of the second embodiment has a flared shape from the point apex 32 side to the front surface 5 of the blade plate 3, and is formed so that the height gradually increases toward the point apex 32.

[0041] As described above, the base portion 22 has the pointed blades 28 arranged along the slopes 23, 23 between the slopes 23 that incline toward the pointed apex 32, forming one set. A total of four such sets are arranged in a row vertically and horizontally to form one angled blade portion 20. Therefore, one angled blade portion 20 has a total of eight slopes and four pointed blades 28. In the base portion 22 as a whole, the four pointed blades 28 form four ridges.

[0042] The pointed apex 32 has a plurality of inclined recesses 34 that form the pointed edge 28 in a cross shape. In other words, the pointed edge 28 is formed in a cross shape by the combination of the bases of the inclined recesses 34.

[0043] The inclined recess 34 is formed by inclining and recessing a portion of the slope 23 on the pointed apex 32 side. Specifically, for example, a portion of the slope 23 is recessed (inclined) into a triangular shape or the like. Since one mountain-shaped cutting portion 20 has a total of eight slopes, the number of inclined recesses 34 is also eight.

[0044] The inclined recess 34 may be configured as an inclined surface having a substantially triangular shape, or may be configured as an inclined surface having a substantially rectangular or semispherical shape. The inclined recess 34 may be configured as a vertical surface instead of an inclined surface. In short, any configuration may be used as long as the pointed edge 28 of the pointed end apex 32 is formed into a cross shape by the inclined recess 34, which makes it easier for stress concentration to be applied to the object to be crushed CM and allows it to be cut (crushed, etc.) more efficiently.

[0045] Regarding the relationship between the pointed end blade 28 of the base portion 22 and the pointed end blade 28 formed in a cross shape at the pointed end apex 32, one end of the pointed end blade 28 of the base portion 22 and one end of the cross of the pointed end blade 28 of the pointed end apex 32 are connected, but they may also be unconnected.

[0046] Regarding the configuration of the angled blade portion 20, an example has been described in which, with respect to the base portion 22, a rectangular blade 26 or a pointed blade 28 is arranged along the slopes 23, 23 between the slopes 23 that slope toward the flat top 30 or the pointed top 32, and a total of four such sets are arranged in a row up, down, left, and right when viewed from the front to form one angled blade portion. However, a total of five or more sets may be arranged to form one angled blade portion 20. In this case, the number of slopes of one angled blade portion 20 will be ten or more, and the number of rectangular blades 26 or pointed blades 28 will be five or more.

[0047] With regard to the flat apex 30 or the pointed apex 32 of the angled cutting portion 20, an example has been described in which the rectangular blade 26 or the pointed blade 28 is formed in a cross shape. However, when five or more sets of the above-mentioned sets are arranged, the flat apex 30 or the pointed apex 32 of the angled cutting portion 20 is formed such that the rectangular blade 26 or the pointed blade 28 is substantially in a square shape (when five sets are arranged in total), radially (when six sets are arranged in total), or the like, depending on the combination of the base sides of the multiple inclined recesses 34.

[0048] Also, three sets (upper right and left when viewed from the front) each having a rectangular blade 26 or a pointed blade 28 arranged along the slopes 23, 23 between the slopes 23 that slope toward the flat top 30 or the pointed top 32 may be combined (upper right and left when viewed from the front), and the other (lower when viewed from the front) may have a different shape. In other words, the above set does not have to be formed on all the top, bottom, left and right sides when viewed from the front, and some may have different shapes.

[0049] The angle-shaped blade portion 20 may have other frustum shapes. The frustum may be a circular cone frustum, a polygonal pyramid frustum, etc. The polygonal pyramid frustum may be a triangular pyramid frustum, a square pyramid frustum, etc. The apex of the frustum may be a horizontal plane, an inclined plane, or a curved plane, and may be partially truncated.

[0050] Next, we will explain the notched truncated cone blade portion 50. The notched truncated cone blade portion 50 is a truncated cone, specifically, a truncated cone with a portion cut out from the tip surface 56 side to the opposite side (surface 5 side) (see FIG. 9).

[0051] The notched truncated cone-shaped cutting portion 50 is mainly composed of an inclined surface 53, a tip surface 56, and a notched surface 57. The notched truncated cone-shaped cutting portion 50 is divergent from the tip surface 56 side to the surface 5 of the blade plate 3, and is formed so as to gradually increase in height toward the tip surface 56. The inclined surface 53 is gently inclined toward the tip surface 56. The apex of the notched truncated cone-shaped cutting portion 50 is the tip surface 56. The tip surface 56 may have any shape. For example, it may be a horizontal surface or a curved surface, or a part of it may be cut off. It may also be a beak-shaped surface pointing downward. The notched surface 57 may also have any shape. For example, the bottom surface of the notched truncated cone-shaped cutting portion 50 may be perpendicular to the surface 5 of the blade plate 3 or may be inclined at an angle. It may also be a flat surface or a multifaceted surface.

[0052] The blade portions 10 (the angled blade portion 20 and the notched frusto-conical blade portion 50) protruding from the surface 5 of the blade plate 3 can be divided into, for example, an uppermost portion, a second portion, a third portion, and a bottommost portion from the top, but more or less than that may be provided as long as the effects of the present invention can be achieved. In other words, the number of blade portions 10 and the number of rows are not important.

[0053] The height of each blade portion 10 may be the same for the top, second, third, and bottom tiers, or may be higher for the second and third tiers than for the top and bottom tiers. When the blade portion 10 in the top tier is higher than the blade portions 10 in the other tiers, the object to be crushed CM can be crushed while being pressed down from above.

[0054] Furthermore, the blade portions 10 can be arranged in parallel, but a staggered arrangement as shown in Fig. 1 etc. is preferable. When the angled blade portions 20 and the notched frustoconical blade portions 50 are arranged in a staggered manner, it is preferable to connect the angled blade portions 20 and the notched frustoconical blade portions 50 with rib-shaped blade portions 60. Next, the rib-shaped blade portions 60 (first and second embodiments) protruding from the surface 5 of the blade 1 will be described.

[0055] The rib-shaped blade portion 60 in the first embodiment has a generally rectangular truncated shape consisting of a rectangular blade 66 at the apex and inclined surfaces 63, 63 continuing to both sides of the rectangular blade 66. The length may be any length as long as it allows the angle-shaped blade portion 20 and the notched truncated cone-shaped blade portion 50 to be connected to each other.

[0056] The rib-shaped blade portion 60 of the second embodiment (not shown) has a generally triangular truncated shape consisting of a pointed blade at the apex and inclined surfaces continuing to both sides of the pointed blade. That is, the rib-shaped blade portion 60 of the second embodiment has a pointed blade that corresponds to the rectangular blade 66 of the rib-shaped blade portion 60 of the first embodiment. The length may be any length as long as the angled blade portion 20 and the notched truncated cone blade portion 50 can be connected to each other.

[0057] When the blade portions 10 (angle-shaped blade portions 20, notched frustum-shaped blade portions 50) are arranged in a staggered manner, the rib-shaped blade portions 60 are arranged obliquely by connecting the blade portions 10. In other words, a diamond shape can be formed by the four staggered angle-shaped blade portions 20 and the rib-shaped blade portions 60 that connect them. In other words, the angle-shaped blade portions 20 are located at the apexes of the rib-shaped blade portions 60. The area surrounded by each blade portion 10 (angle-shaped blade portions 20, notched frustum-shaped blade portions 50) and each rib-shaped blade portion 60 is defined as a fitting area MA, and the mating blade portion 10 (angle-shaped blade portion 20, notched frustum-shaped blade portion 50) is fitted into this fitting area MA. Specifically, when the movable blade 12 moves forward, the angled blade portion 20 or the notched frustum-shaped blade portion 50 of the movable blade 12 fits into the engagement area MA of the fixed blade 11, and the angled blade portion 20 or the notched frustum-shaped blade portion 50 of the fixed blade 11 fits into the engagement area MA of the movable blade 12.

[0058] Furthermore, the height relationship between the rib-shaped blade portion 60 and the angled blade portion 20 or the notched frustum-shaped blade portion 50 is set so that the angled blade portion 20 or the notched frustum-shaped blade portion 50 is higher than the rib-shaped blade portion 60. Specifically, it is desirable that the peak of the rib-shaped blade portion 60 be located at the middle of the base portion 22 of the angled blade portion 20 or the notched frustum-shaped blade portion 50 in a side view. The combination of locations on the blade plate 3 where the rib-shaped blade portion 60 is provided and locations where it is not provided is arbitrary.

[0059] In addition, the vertical blades 71 and horizontal blades 72 may be formed in a lattice pattern or the like above the blade plate 3. When the vertical blades 71 and horizontal blades 72 are provided above the blade plate 3, the mountain-shaped blade portion 20 or the notched truncated cone blade portion 50 or the like is provided below the vertical blades 71 and horizontal blades 72. The vertical blades 71 and horizontal blades 72 are expected to have the effect of suppressing the object to be crushed CM that tends to move upward during crushing.

[0060] Furthermore, a cross blade portion 40 or the like may be provided to protrude from the surface 5 of the blade plate 3, and the angled blade portions 20 or the notched truncated cone blade portions 50 may be connected to each other by the cross blade portion 40. In Fig. 1 etc., the lowest angled blade portion 20 is connected to the third angled blade portion 20. Alternatively, a stone-shaped blade portion 10 may be provided to protrude from the lower end side.

[0061] 3, 6, etc., the cross blade portion 40 is provided within a fitting area MA surrounded by the angled blade portion 20 and each of the rib-shaped blade portions 60. The lowest angled blade portion 20 is connected to the third angled blade portion 20, and the lowest angled blade portion 20 is connected to the third angled blade portion 20 and the second angled blade portion 20.

[0062] In the blade 1 for the crusher 100 of the present invention, the surfaces 5 on both ends in the left-right direction LR of the blade plate 3 are inclined inwardly, and these portions are designated as inclined portions 7. That is, the surface 5 on the left end side of the blade plate 3 in front view is inclined inwardly (toward the center) CS, and the surface 5 on the right end side of the blade plate 3 in front view is also inclined inwardly. Both of these inclined portions 7, 7 are inclined so as to face the inner side CS of the blade plate.

[0063] By providing an inclination to the surface 5 from the end side of the blade 1 toward the inner CS side, the object to be crushed CM that is trying to escape to the outside during crushing can be guided toward the inner CS.

[0064] In the fixed blade 11 shown in Fig. 1 and the movable blade 12 shown in Fig. 3, an inclined portion 7 is provided in a part of the up-down direction UD. In the fixed blade 11, the inclined portion 7 is provided between the lowermost blade portion 10 and the third blade portion 10. Similarly, in the movable blade 12, the inclined portion 7 is provided between the lowermost blade portion 10 and the third blade portion 10.

[0065] The inclined portion 7 may be provided at any position in the up-down direction UD of the blade plate 3. For example, the inclined portion 7 may be located only near or below the center of the blade plate 3 in the up-down direction UD. Although not shown, the inclined portion 7 may be provided between the uppermost blade portion 10, the third blade portion 10, and the second blade portion 10. Alternatively, the inclined portion 7 may be provided over the entirety of the blade plate 3 in the up-down direction UD.

[0066] The angle of inclination of the inclined portion 7 is not particularly limited, and may be any angle as long as it provides the effects of the present invention.

[0067] The blade portion 10 protruding from the surface 5 of the blade plate 3 is a crescent blade portion 20 or a notched frustum conical blade portion 50, and the crescent blade portion 20 or the notched frustum conical blade portion 50 may be divided in vertical section and protrude from the surface 5 of the blade plate 3. Specifically, the crescent blade portion 20 or the notched frustum conical blade portion 50 protruding from both ends in the left-right direction LR of the blade plate 3 protrude from the surface 5 with their vertical section divided.

[0068] In addition, since the cross-sectionally divided angled blade portion 20 and the notched frustum conical blade portion 50 are located at the ends in the left-right direction LR of the surface 5 of the blade plate 3 and constitute approximately half of the surface 5, it is desirable to make them strong. Therefore, each component of the angled blade portion 20 and the notched frustum conical blade portion 50 is structurally larger, wider, and thicker than the angled blade portion 20 and the notched frustum conical blade portion 50 that are not cross-sectionally divided.

[0069] As described above, the angled cutting portion 20 and the notched frustum-shaped cutting portion 50 at the ends in the left-right direction LR of the surface 5 of the blade plate 3 have a structure that is half of a vertical cross section. The inclined portions 7 are provided on both ends in the left-right direction LR of the blade plate 3. Therefore, the inclined portions 7 are adjacent to the angled cutting portion 20 and the notched frustum-shaped cutting portion 50 that have a half structure that is half of a vertical cross section.

[0070] As shown in Figs. 1 and 3 , in the case where the rib-shaped blade portion 60 is further provided protruding from the surface 5 of the blade plate 3, the portions on both ends surrounded by the vertical cross-sectionally divided mountain-shaped blade portion 20 and the rib-shaped blade portion 60 etc. form inclined portions 7.

[0071] Also, as shown in Fig. 6, the inclined portion 7 can be provided with a rib-like piece 9. The rib-like piece 9 can be in various shapes, including a convex shape as shown in Fig. 6 and a rectangular shape. The height, etc., is also not an issue. By providing the rib-like piece 9 on the inclined portion 7, the object CM that is trying to escape to the outside during crushing can be guided to the inside CS of the blade 1 more effectively than in the case of a configuration with only the inclined portion 7.

[0072] The material of the blade 1 consisting of the blade plate 3 and the blade portion 10 may be any material as long as it can crush the object to be crushed CM. For example, special steels such as carbon steel for machine construction (SC) and alloy steel for machine construction (SCM, etc.), alloy castings based on ordinary cast steel FCD, etc. may be mentioned. In addition, hard materials with high wear resistance, wear-resistant cast steel, high manganese cast steel, etc. may be mentioned.

[0073] When the blade 1 is made of high manganese cast steel, it is high manganese cast steel SCMnH11 cast steel (JIS G5131) containing 11% to 14% by mass of manganese. That is, the manganese content is 11% to 14% by mass. However, the manganese content may be more than 15% by mass, for example, more than 20% by mass.

[0074] The composition of high manganese cast steel is specified by JIS as follows: Fe is the main component, and the mass percentages are C: 0.70-1.35%, Si: 0.3-0.9%, Mn: 6.00-19.00%, P: 0.050 or less, S: 0.040 or less, and Cr: 1.5-3.00%. Of these, C: 1.12-1.14%, Si: 0.43-0.46%, Mn: 12.25-12.79%, P: 0.050%, S: 0.01%, and Cr: 2.17-2.30% are preferable.

[0075] Among the above ingredients, the inclusion of chromium (Cr) makes the blade itself stronger. However, considering ease of processing, it is preferable to use high manganese cast steel that contains as little chromium as possible. In addition to those that do not contain any chromium at all, those that are allowed to contain around 1% chromium are also acceptable.

[0076] An example of the configuration of a crusher 100 in which the fixed blade 11 and the movable blade 12 of the present invention are arranged will be described.

[0077] The crusher 100 comprises a pair of left and right main body frames 110, 110 arranged side by side on the sides, a fixed blade 11 arranged vertically between the main body frames 110, 110, and a movable blade 12 that moves back and forth relative to the fixed blade 11, and is configured as an upper and lower open section having an upper open section UO into which the material to be crushed CM is input and a lower open section LO from which crushed waste material is discharged.

[0078] One side of both main body frames 110, 110 is fixed to each other via a fixed blade 11. Specifically, the fixed blade 11 having a screw hole with a thread groove is fixed to the front side F of both main body frames 110, 110 via a fastener such as a bolt. Also, the other side of both main body frames 110, 110 is fixed to each other via a rear frame 111. Specifically, the rear frame 111 having a screw hole with a thread groove is fixed to the rear side B of both main body frames 110, 110 via a fastener such as a bolt. In this manner, the fixed blade 11 and the rear frame 111 are fixed to the main body frames 110, 110.

[0079] The fixed blade 11 may be fixed via a fixed blade holder 120 (see FIG. 11, etc.). Specifically, the fixed blade holder 120 having a screw hole with a thread groove is fixed to the front side F of both main body frames 110, 110 via a fastener such as a bolt, and the fixed blade 11 is fixed to the fixed blade holder 120 having a screw hole with a thread groove via a fastener such as a bolt.

[0080] The fixed blade holder 120 has a vertical surface or an inclined surface, and the fixed blade 11 is fixed to the vertical surface or the inclined surface. Therefore, when the fixed blade 11 is fixed to the fixed blade holder 120 having a vertical surface, the fixed blade 11 is fixed vertically (see FIG. 11). On the other hand, when the fixed blade 11 is fixed to the fixed blade holder 120 having an inclined surface, the fixed blade 11 is fixed at an incline (not shown). Note that the fixed blade holder 120 may be an integrated fixed blade holder 120, or may be a split type composed of an upper fixed blade holder and a lower fixed blade holder.

[0081] When the fixed blade 11 is arranged at an incline relative to both main frames 110, 110, the V-shaped crushing space S formed between the fixed blade 11 and the movable blade 12 can be made wide, so that relatively large objects to be crushed CM can be fed in.

[0082] In addition, when the fixed blade 11 is arranged vertically to both main frames 110, 110, the V-shaped crushing space S formed between the fixed blade 11 and the movable blade 12 may be narrower than when the fixed blade 11 is inclined, but when the movable blade 12 reaches its forward limit position, the movable blade 12 and the fixed blade 11 face each other approximately horizontally from front to back, and the crushing space S formed between the fixed blade 11 and the movable blade 12 becomes narrower, so that the material to be crushed CM can be crushed more finely.

[0083] The movable blade 12 is supported by a fulcrum shaft 140 that is installed between both main body frames 110, 110. Specifically, the movable blade 12 is supported by a semicircular support portion formed on the underside of the movable blade 12. A fulcrum shaft cap 142 is placed on the fulcrum shaft 140 and fixed by a fixing device such as a bolt (see FIG. 12).

[0084] The fulcrum shaft 140 is supported by bearings fitted in large frame holes 145 formed in both main body frames 110. Support blocks 146 (bearing position adjustment blocks) are fitted in front of and behind the bearings in the frame holes 145. That is, the position of the fulcrum shaft 140 can be changed by adjusting the number of support blocks 146 on the left and right sides in the frame holes 145 by inserting and removing the support blocks 146 that fit in the frame holes 145. Therefore, the size of the crushing space S and the downward opening LO formed between the fixed blade 11 and the movable blade 12 can be adjusted.

[0085] Another possible configuration for changing the position of the fulcrum shaft 140, although not shown, is to use a bearing, a metal mounted inside the bearing, an eccentric bush, and a fastener for fixing the eccentric bush to the bearing. With this configuration, a fastener such as a bolt is removed, the eccentric bush is rotated to change the position of the fulcrum shaft, and after changing the eccentric bush, the eccentric bush is fixed with a fastener such as a bolt to fix the eccentric bush. In this way, the position of the fulcrum shaft can be changed and fixed.

[0086] The cylinder 150 that moves the moving blade 12 back and forth is preferably attached to the crusher 100 by a trunnion structure, but may be attached by other methods. An example of the trunnion structure will be described.

[0087] The fixing of the cylinder 150 to the crusher 100 (rear frame 111) will be described. The rear frame 111 is provided with an elliptical through hole in the top and bottom that is larger than the outer diameter of the cylinder 150, and the cylinder 150 is inserted into this through hole and pivotally attached to the cylinder 150 so as to be rotatable (movable up and down) via the axis of a trunnion body 153 protruding from both the left and right sides. Specifically, the trunnion body 153 is inserted and fixed to the tip side of the cylinder 150, and a trunnion bearing 155 is fixed to the rear frame 111 (on both sides of the through hole), and the cylinder 150 is pivotally attached to the trunnion bearing 155 via the axis of the trunnion body 153 so as to be vertically movable. With the above-mentioned structure, the cylinder 150 is pivotable with respect to the rear frame 111, and the cylinder 150 is vertically movable (swings up and down) within the through hole. When mounting the cylinder 150 to the crusher 100, another member such as a trunnion base having a through hole may be used therebetween.

[0088] The following describes how the piston rod 151 is fixed to the moving blade 12. A double-ridged clevis 162 is fixed to the back surface of the moving blade 12, and a single-ridged clevis 161 is fixed to the tip of the piston rod 151, and the single-ridged clevis 161 is pivotally attached to the double-ridged clevis 162 via a shaft so as to be freely rotatable (movable up and down). With the above-described structure, the moving blade 12 can pivot (swing up and down) relative to the piston rod 151, with the shaft as a fulcrum.

[0089] The main components of this crusher 100 are a fixed blade 11 which is fixedly supported vertically or at an incline relative to the crusher 100, and a movable blade 12 which is supported on a fulcrum shaft 140 installed between the two main frames 110, 110, and which is inclined relative to the two main frames 110, 110 at the rearmost position and is approximately perpendicular to the two main frames 110, 110 at the forwardmost position, and which moves back and forth about the fulcrum shaft 140 in response to the forward and backward movement of a piston rod 151 of a cylinder 150 provided on the rear frame 111.The material to be crushed CM is supplied to a V-shaped crushing space S formed between the fixed blade 11 and the moving blade 12, and the material to be crushed CM is crushed by the moving blade 12 moving forward relative to the fixed blade 11.

[0090] liner It is also possible to detachably install one or more liners 115 on the inside of both main body frames 110, 110 using fasteners such as bolts. It is also possible to adopt a configuration in which the fasteners such as bolts are processed to be approximately flush with each other by polishing means.

[0091] The liner 115 is made of a high hardness material having wear resistance, such as cemented carbide, and by providing the liner 115 to both main body frames 110, 110, it is possible to avoid impacts of the objects to be crushed CM on both main body frames 110, 110, thereby improving the durability and extending the lifespan of both main body frames 110, 110. It is also possible to avoid friction between both main body frames 110, 110 and the blade 1. The hardness of the liner 115 is, for example, about HRC50 to HRC60.

[0092] It is preferable to provide a decompression circuit in the crusher 100. By providing a decompression circuit, excessive pressure from the moving blade 12 is suppressed. In particular, when crushing non-ferrous metals such as aluminum, the decompression circuit reduces the recoil of the moving blade and the vibration during crushing by releasing the pressure in the cylinder 150.

[0093] Regarding the movable blade 12, a configuration has been described in which the tip of the piston rod 151 is fixed (pivoted) to the back surface of the movable blade 12 via a two-ridge clevis 162 and a single-ridge clevis 161, but it may also be fixed via a movable blade holder (not shown).

[0094] A semicircular pivot portion is formed on the underside of the movable blade holder, which is pivotally supported on a fulcrum shaft 140 via the pivot portion. The fulcrum shaft 140 is covered with a fulcrum shaft cap 142 and fixed with a fixing device such as a bolt. A double-ridged clevis is fixed to the back surface of the movable blade holder, and a single-ridged clevis is fixed to the tip of the piston rod 151, and the single-ridged clevis is connected to the double-ridged clevis via a shaft so that it can rotate (move up and down). The movable blade 12 is fixed to the movable blade holder, which has a screw hole with a threaded groove, via a fastener such as a bolt. With the above structure, the movable blade holder and the movable blade 12 can pivot (swing up and down) around the shaft as a fulcrum.

[0095] The mountain-shaped blade portion 20 of the first embodiment is formed so that when the moving blade 12 advances and reaches the forward limit position, a gap (20 mm or more, about 5 mm) is generated between the blade portion 10 of the fixed blade 11 and the blade portion 10 of the moving blade 12. Therefore, the blade portion 10 of the fixed blade 11 and the blade portion 10 of the moving blade 12 do not completely mesh. For example, when the object to be crushed CM is iron-based, it is possible to "break" it, so it is preferable to use the mountain-shaped blade portion 20 of the first embodiment in which a gap is generated between both blade portions 10, 10. Note that a configuration in which no gap is generated between the blade portion 10 of the fixed blade 11 and the blade portion 10 of the moving blade 12 when the moving blade 12 advances and reaches the forward limit position may also be used.

[0096] Regarding the mountain-shaped blade portion 20 of the second embodiment, when the moving blade 12 reaches the forward limit position, both blade portions 10, 10 may or may not mesh with each other. If the blade portion 10 of the fixed blade 11 and the blade portion 10 of the moving blade 12 are formed with the same size pitch, the blade portion 10 of the fixed blade 11 and the blade portion 10 of the moving blade 12 mesh with each other when the moving blade 12 reaches the forward limit position. Therefore, the blade portion 10 of the fixed blade 11 and the blade portion 10 of the moving blade 12 collide with each other (the tip of the blade portion 10 is pressed against the surface 5 of the blade plate 3, etc.) and are "cut". For example, in the case of the crushed material CM (pure aluminum, magnesium alloy), which is difficult to "break", plastic compounds, zinc alloys, etc., it is desirable to use interlocking blade portions 10.

[0097] The object to be crushed CM can be broken or cut by the rectangular blade 26, the edge portions at the ends of the rectangular blade 26 at the base 22 and the flat top 30, and the pointed blade 28 at the base 22 and the pointed top 32.

[0098] The present invention has been described above based on each embodiment, but the present invention is not limited to the above embodiments, and modifications may be made without departing from the spirit of the present invention, and the techniques described in each embodiment or other publicly known or well-known techniques may be combined. [Explanation of symbols]

[0099] 1: Knives 3: Blade plate 5: Surface 7: Inclined part 9: Rib-like piece 10: Blade part 11: Fixed blade 12: Moving blade 20: Mountain-shaped blade 22: Base 23: Slope 26: Rectangular blade 28: Pointed blade 30: Flat top 32: Top of tip 34: Inclined recess 40: Cross blade part 50: Notched truncated cone blade 53: Slope 56: Tip surface 57: Notched surface 60: Ribbed blade 63: Inclined surface 66: Rectangular blade 67: Pointed blade 71: Vertical blade 72: Side blade 100: Crusher 110: Main frame 111: Rear frame 115: Liner 120: Fixed blade holder 140: Pivot axis 142: Pivot shaft cap 145:Frame hole 146: Support block 150: Cylinder 151: Piston rod 153: Trunnion body 155: Trunnion bearing 161: Single clevis 162: Double clevis B: Back side F: Front side S: Crushed space CM: Material to be crushed CS: Inside UD: Vertical direction LR: Left and right direction MA: Mating area UO: Upper open part LO: Lower opening part

Claims

1. A blade for a crusher having a plurality of blade portions protruding from a surface of a blade plate, The blade portion is a mountain-shaped blade portion and / or a truncated cone-shaped blade portion, The mountain-shaped blade portion and / or the notched truncated cone-shaped blade portion are arranged in a staggered pattern, A blade for a crusher, characterized in that the surfaces of both left and right ends of the blade plate are provided with inclined portions that are inclined inwardly.

2. The blade for a crusher according to claim 1 , wherein the inclined portion is located below a center of the blade in a vertical direction.

3. 3. The blade for a crusher according to claim 1 or 2, wherein the inclined portion is provided with a rib-like piece.

4. The surface of the blade plate further includes a plurality of rib-shaped blade portions and / or cross blade portions, The blade for a crusher according to claim 1 or 2, characterized in that the rib-shaped blade portion and / or the cross blade portion are connected to the mountain-shaped blade portion and / or the notched truncated cone-shaped blade portion.

5. The surface of the blade plate further includes a plurality of rib-shaped blade portions and / or cross blade portions, The blade for a crusher according to claim 3, wherein the rib-shaped blade portion and / or the cross blade portion are connected to the mountain-shaped blade portion and / or the notched truncated cone-shaped blade portion.

6. The blade for a crusher according to claim 1 or 2, characterized in that the blade is made of high manganese cast steel containing 11% by mass to 14% by mass of manganese.

7. The blade for a crusher according to claim 3, characterized in that the blade is made of high manganese cast steel containing 11% by mass to 14% by mass of manganese.

8. The blade for a crusher according to claim 4, characterized in that the blade is made of high manganese cast steel containing 11% by mass to 14% by mass of manganese.

9. The blade for a crusher according to claim 5, characterized in that the blade is made of high manganese cast steel containing 11% by mass to 14% by mass of manganese.

10. The knife has a pair of left and right body frames, a fixed blade disposed between the body frames, and a movable blade that moves back and forth relative to the fixed blades. A crusher having an upper opening for inputting materials to be crushed and a lower opening for discharging materials to be crushed, A crusher, wherein the fixed blade and / or the movable blade is the blade according to claim 1 or 2.

11. The knife has a pair of left and right body frames, a fixed blade disposed between the body frames, and a movable blade that moves back and forth relative to the fixed blades. A crusher having an upper opening for inputting materials to be crushed and a lower opening for discharging materials to be crushed, A crusher, wherein the fixed blade and / or the movable blade is the blade according to claim 3.

12. The knife has a pair of left and right body frames, a fixed blade disposed between the body frames, and a movable blade that moves back and forth relative to the fixed blades. A crusher having an upper opening for inputting materials to be crushed and a lower opening for discharging materials to be crushed, A crusher, wherein the fixed blade and / or the movable blade is the blade according to claim 4.

13. The knife has a pair of left and right body frames, a fixed blade disposed between the body frames, and a movable blade that moves back and forth relative to the fixed blades. A crusher having an upper opening for inputting materials to be crushed and a lower opening for discharging materials to be crushed, A crusher, wherein the fixed blade and / or the movable blade is the blade according to claim 5.

14. The knife has a pair of left and right body frames, a fixed blade disposed between the body frames, and a movable blade that moves back and forth relative to the fixed blades. A crusher having an upper opening for inputting materials to be crushed and a lower opening for discharging materials to be crushed, A crusher, wherein the fixed blade and / or the movable blade is the blade according to claim 6.

15. The knife has a pair of left and right body frames, a fixed blade disposed between the body frames, and a movable blade that moves back and forth relative to the fixed blades. A crusher having an upper opening for inputting materials to be crushed and a lower opening for discharging materials to be crushed, A crusher, wherein the fixed blade and / or the movable blade is the blade according to claim 7.

16. The knife has a pair of left and right body frames, a fixed blade disposed between the body frames, and a movable blade that moves back and forth relative to the fixed blades. A crusher having an upper opening for inputting materials to be crushed and a lower opening for discharging materials to be crushed, A crusher, wherein the fixed blade and / or the movable blade is the blade according to claim 8.

17. The knife has a pair of left and right body frames, a fixed blade disposed between the body frames, and a movable blade that moves back and forth relative to the fixed blades. A crusher having an upper opening for inputting materials to be crushed and a lower opening for discharging materials to be crushed, A crusher, wherein the fixed blade and / or the movable blade is the blade according to claim 9.

Images