JP2021107084A - Crusher - Google Patents

Abstract

To provide a crusher which can easily attach/detach a striking plate to/from a rotor.SOLUTION: A crusher comprises a striking plate, a rotor plate, and a fastening member. An accommodation recess, which can accommodate a part of the striking plate, is formed in the rotor plate. The paired fastening members are located in the accommodation recess so as to face each other with the striking plate interposed therebetween, and are movable in a direction parallel to and in a direction perpendicular to a rotation axis. A taper guide surface, which guides the fastening member so that a distance between the paired fastening members decreases as separating from the rotation axis, is formed on the rotor plate. A taper surface, which corresponds to the taper guide surface, is formed on the fastening member. The striking plate has a hook part which can engage with the fastening member. By moving the fastening member in a direction parallel to the rotation axis, the fastening member can be switched between a state of engaging with the hook part and a second state of releasing such engagement. By moving the striking plate together with the fastening member in the first state in a direction separating from the rotation axis, the taper guide surface and the taper surface engage with each other in taper.SELECTED DRAWING: Figure 1

Description

The present invention mainly relates to a crusher to which a striking plate that gives a striking force to a crushing object is attached.

Conventionally, impact-type crushing, in which a crushing object such as a rock thrown in from a supply port at the upper part of the casing is hit by a striking plate that rotates at high speed together with a rotor, and the crushing object is collided with a collision plate to be crushed. The machine is known.

With such a crusher, the tip end portion (the portion protruding from the rotor to the outer periphery) of the striking plate is worn as it is used, and the crushing efficiency is eventually lowered. Therefore, there is known a crusher in which a striking plate is detachably attached to a rotor and can be replaced with a new striking plate when the striking plate is worn out. In addition, the striking plate has a symmetrical shape, the striking plate is removed after wear, the direction of the striking plate is reversed, and the striking plate is reattached to the rotor, thereby significantly extending the life of the striking plate. ..

This striking plate is a heavy one weighing 90 kg to 130 kg, for example, and the reversing work or the replacement work is a heavy labor. Therefore, there is an increasing need to improve the workability of the reversing or replacement work of the striking plate.

In this regard, Patent Document 1 discloses a replacement jig for replacing a striking element (striking plate) in an impact type crusher in which a rotor rotates in one direction. In the configuration of Patent Document 1, the hammer is sandwiched from both sides in the longitudinal direction (width direction) by a replacement jig provided with a pair of sandwiching members that can be opened and closed, and is lifted vertically to perform reversal or replacement work.

Patent Document 2 discloses a crusher having a configuration in which a second side surface remaining in a state of being hardly worn is utilized by reversing the rotation direction of the rotor disk after the first side surface of the striking plate is worn. .. Unlike Patent Document 1, this crusher has a symmetrical layout in which the input port of the crushed object is located directly above the rotor disk so that the same operation is performed even if the rotation direction is reversed. .. When the striking plate is worn in Patent Document 2, the length of the striking plate protruding from the rotor can be recovered by moving the striking plate from the rotor disk in a stepwise manner toward the outer peripheral side.

Japanese Unexamined Patent Publication No. 8-257427 JP-A-2015-73964

However, in the crusher of Patent Document 1, a replacement jig for sandwiching the hammer from both sides in the width direction is required, the replacement jig becomes large, and the hammer is relatively replaced. It took a lot of space.

Further, in the crusher of Patent Document 2, displacement of the striking plate is prevented by penetrating a rod-shaped support or the like through the protector of the striking plate and inserting it into a hole provided in the striking plate. Further, a split pin or the like is provided to prevent the support from coming off. Therefore, the structure for fixing the striking plate is complicated, which increases the time and labor of the work and requires a lot of time and effort to manage the members.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a crusher in which a striking plate can be easily attached to and detached from a rotor.

The problem to be solved by the present invention is as described above, and next, the means for solving this problem and its effect will be described.

From the viewpoint of the present invention, a crusher having the following configuration is provided. That is, this crusher includes a striking plate, a rotating plate, and a tightening member. A striking portion is formed on the striking plate. The rotating plate is formed with an accommodating recess capable of accommodating a part of the striking plate, and is rotatably supported around a rotating shaft. The tightening members are arranged in the accommodating recess in pairs so as to face each other with the striking plate sandwiched between them, and each of them can move in a direction parallel to the rotation axis and a direction perpendicular to the rotation axis. The rotating plate is formed with a tapered guide surface that guides the tightening member so that the distance between the pair of the tightening members decreases as the tightening member moves away from the rotating shaft. A tapered surface corresponding to the tapered guide surface is formed on the tightening member. The striking plate is formed including a portion that is convex or concave in the thickness direction, and has a hooking portion that can mesh with the tightening member. By moving the tightening member in a direction parallel to the rotation axis, the tightening member is engaged between the first state in which the tightening member engages with the hooking portion and the second state in which the engagement is released. It is configured to be switchable. By moving the striking plate together with the tightening member in the first state in a direction away from the rotation axis, the tapered guide surface and the tapered surface are tapered and engaged.

As a result, by rotating the rotating plate with the tightening member in the first state, the striking plate and the tightening member move in a direction away from the rotation axis due to centrifugal force, and tightening is performed by the taper engagement that occurs at this time. Attached members tighten the striking plate. As a result, the striking plate can be fixed to the rotating plate.

According to the present invention, it is possible to provide a crusher in which a striking plate can be easily attached to and detached from a rotor.

The cross-sectional view which shows typically the whole structure of the crusher which concerns on 1st Embodiment of this invention. The perspective view which shows the overall structure of a rotor and a striking plate. The perspective view which shows the striking plate attached to a rotor in detail. An exploded perspective view showing the configuration of a protector, a tightening member, and a striking plate. The perspective view explaining the structure of the striking plate. A cross-sectional view showing a state in which a part of the casing is opened in order to attach the striking plate to the rotor. An enlarged view showing how the striking plate lifted by the hanging jig is inserted into the accommodating recess of the rotating disc. An enlarged view showing a state in which the striking plate is inserted into the accommodating recess. FIG. 8 is a perspective view showing how the tightening member is inserted between the striking plate and the protector from the state of FIG. An enlarged view showing a state in which the striking plate is attached to the rotating disk. The perspective view which shows the modification about the protector and the tightening member. The perspective view which further shows the modification about the protector and the tightening member. The perspective view which shows the deformation example of a striking plate. The perspective view which shows another modification of the striking plate. The perspective view which shows the striking plate of 2nd Embodiment. The perspective view which shows the state which the striking plate of 2nd Embodiment is attached to a rotor. (A) A front view showing a state in which the striking plate of the second embodiment is lifted by a hanging jig. (B) A side sectional view showing a state in which the striking plate of the second embodiment is lifted by a hanging jig. The perspective view which shows the modification of the striking plate of 2nd Embodiment. The perspective view which shows another modification of the striking plate of 2nd Embodiment.

Next, an embodiment of the present invention will be described with reference to the drawings. FIG. 1 is a cross-sectional view schematically showing the overall configuration of the crusher 100 according to the first embodiment of the present invention. Note that FIG. 1 shows a cross section of the crusher 100 cut in a plane perpendicular to the axis of the rotor 2 (rotary axis 2c described later). FIG. 2 is a perspective view showing the overall configuration of the rotor 2 and the striking plate 1. FIG. 3 is a perspective view showing in detail the striking plate 1 attached to the rotor 2. FIG. 4 is an exploded perspective view showing the configurations of the protector 3, the tightening member 4, and the striking plate 1.

The crusher 100 of the first embodiment shown in FIG. 1 is a machine that crushes a raw material (object to be crushed) 70 such as a rock by hitting, impacting, or the like. The crusher 100 mainly includes a casing 90, a transmission shaft 21, a rotor 2, a striking plate 1, a collision plate 80, and a Marlburn 81.

The casing 90 is formed in a hollow shape, and a rotor 2, a striking plate 1, a collision plate 80, and a Marlburn 81 are housed therein. Further, the transmission shaft 21 is horizontally arranged so as to penetrate the internal space of the casing 90 and is rotatably supported. The transmission shaft 21 rotates when a driving force is transmitted from an electric motor or the like (not shown).

A supply port 91, which is an opening for charging the raw material 70 from above, is formed in the center of the upper surface of the casing 90. A discharge port 92, which is an opening for discharging the crushed material 71, which is a crushed raw material, is formed on the bottom surface of the casing 90. Inside the casing 90, a path of the raw material 70 from the supply port 91 to the discharge port 92 is formed. The casing 90 is provided with a hinge mechanism so that a part of the casing 90 can be opened for maintenance work or the like.

The collision plates 80 are provided in pairs so as to sandwich a space between the rotor 2 and the supply port 91 arranged directly above the rotor 2. The collision plate 80 gives an impact force to the raw material 70 when the raw material 70 blown by the impact of the striking plate 1 collides with the raw material 70, and causes the raw material 70 to be crushed more effectively.

The Marburn 81 is provided as a pair so as to sandwich the rotor 2 at a position below the collision plate 80. When the tip of the striking plate 1 rotating at high speed passes near the marlburn 81, the raw material 70 is finely crushed to a size that allows it to pass through the gap between the striking plate 1 and the marlburn 81. Instead of the Marlburn 81, a collision plate different from the collision plate 80 may be arranged.

The rotor 2 is arranged substantially below the center of the internal space of the casing 90 and is fixed to the transmission shaft 21. Therefore, the rotor 2 can rotate integrally with the transmission shaft 21. As shown in FIG. 2, the rotation shaft 2c of the rotor 2 coincides with the axis of the transmission shaft 21. In the following description, the shaft that is the center of rotation of the rotor 2 may be simply referred to as the rotation shaft 2c.

Since the crusher 100 of the present embodiment is configured as a reversible rotary crusher, it can be operated by either forward rotation operation in which the rotor 2 is rotated in the direction indicated by the arrow in FIG. 1 or reverse rotation operation in which the rotor 2 is rotated in the opposite direction. , Raw material 70 can be crushed. The crusher 100 is configured to be symmetrical with respect to the vertical plane including the rotation axis 2c so that the same crushing performance can be obtained regardless of which direction the rotor 2 is rotated. Therefore, the supply port 91 is arranged directly above the rotation shaft 2c.

As shown in FIG. 3, the rotor 2 includes four rotating disks (rotating plates) 22. However, the number of rotating discs 22 may be 1 to 3, or 5 or more.

The four rotating discs 22 are attached to the transmission shaft 21 so as to be arranged in the axial direction at intervals. The rotating disk 22 rotates integrally with the transmission shaft 21. Therefore, the axis that is the center of rotation of the rotating disk 22 coincides with the rotating shaft 2c.

As shown in FIG. 2, an accommodating recess 23 capable of accommodating a part of the striking plate 1 is formed on the outer periphery of each rotating disc 22. A plurality (four in this embodiment) of the accommodating recesses 23 are formed at equal intervals in the circumferential direction of the rotating disc 22. The shapes of the four accommodating recesses 23 are the same as each other.

As shown in FIG. 2, the four rotating disks 22 have substantially the same shape and are fixed to the transmission shaft 21 in a state of being in phase with each other. Therefore, the accommodating recesses 23 of each rotating disk 22 are linearly arranged in the direction parallel to the rotating shaft 2c.

The rotating disc 22 includes a disc main body (rotating plate main body) 24, a rotaryr 25, and a protector 3.

The disk body 24 is formed in a plate shape and is fixed to the transmission shaft 21. The above-mentioned accommodating recess 23 is configured by forming a recess in the disk body 24.

A pair of rotor liners 25 are arranged so as to sandwich the respective accommodating recesses 23 formed in the disk main body 24. Each rotor liner 25 is arranged so as to cover the outer peripheral surface of the disc body 24, and is fixed to the disc body 24 by a fixing member such as a bolt. As a result, the disc body 24 can be protected from wear. Further, the rotaryr 25 has a claw portion for hooking the protector 3, whereby the protector 3 can be fixed to the disc main body 24.

A pair of protectors 3 are arranged in each of the accommodating recesses 23 formed in the disk body 24 so as to face each other.

The protector 3 is formed with an inclined tapered guide surface 31 and first protrusions 33 and second protrusions 34 formed at both ends of the tapered guide surface 31. In the following description, reference numerals 3a and 3b may be used to distinguish each of the pair of protectors 3. Further, in order to distinguish the tapered guide surfaces 31 formed on the protectors 3a and 3b, reference numerals 31a and 31b may be used.

In each of the protectors 3a and 3b, on the side opposite to the tapered guide surfaces 31a and 31b, a hole for inserting a protrusion formed on the disc body 24 and a recess for hooking the claw portion formed on the rotor liner 25 are provided. , Are formed. As a result, the protectors 3a and 3b can be fixed to the disk body 24 by the rotor liner 25.

When the protectors 3a and 3b are arranged in the accommodating recesses 23 so as to face each other, the tapered guide surfaces 31a and 31b formed in the protectors 3a and 3b are located so as to face each other as shown in FIG. Further, the two tapered guide surfaces 31a and 31b are formed so as to be inclined so as to be separated from each other as they approach the rotation shaft 2c. In other words, the two tapered guide surfaces 31a and 31b are symmetrically inclined and have a tapered shape when viewed in a direction parallel to the rotation axis 2c.

The tapered surfaces 41a and 41b of the tightening members 4a and 4b, which will be described later, are arranged so as to contact or face the tapered guide surfaces 31a and 31b of the protectors 3a and 3b with a gap. The tapered surfaces 41a and 41b of the tightening members 4a and 4b have a shape corresponding to the tapered guide surfaces 31a and 31b of the protectors 3a and 3b.

Since the tapered guide surfaces 31a and 31b are arranged so as to be inclined as described above, the tapered guide surfaces 31a and 31b have a pair of tightening members as the positions of the tightening members 4a and 4b move away from the rotation shaft 2c. Guide the distance between 4a and 4b to be small.

Further, the tapered guide surfaces 31a and 31b of the protectors 3a and 3b are formed so as to be an inclined arc surface (concave curved surface) as shown in FIG. 4 instead of an inclined flat surface (however, the protectors 3a and 3b are formed to have an inclined arc surface (concave curved surface). It does not have to be formed in a curved surface shape). As a result, the tapered guide surfaces 31a and 31b are tightened in pairs as the positions of the tapered surfaces 41a and 41b of the tightening member 4 deviate from the tapered guide surfaces 31a and 31b in the direction of the rotation shaft 2c. The tightening member 4 described later is guided so that the distance between the attachment members 4a and 4b becomes small.

The first protrusion 33 is provided so as to project at the end of the tapered guide surface 31 located on the side far from the axis of the rotor 2 in a direction approaching the protector 3 on the opposite side.

The second protrusion 34 is provided so as to project at the end of the tapered guide surface 31 located on the side closer to the axis of the rotor 2 in a direction approaching the protector 3 on the opposite side.

As shown in FIG. 1, the crusher 100 of the present embodiment includes tightening members (fixing members) 4 provided in pairs so as to face each other with the striking plate 1 interposed therebetween. In the following description, reference numerals 4a and 4b may be used to distinguish each of the pair of tightening members 4. Further, in order to distinguish the tapered surfaces 41 formed on the respective tightening members 4a and 4b, reference numerals 41a and 41b may be used.

The tightening member 4 is formed in a block shape, and is arranged between the protector 3 and the striking plate 1 accommodated in the accommodating recess 23.

The tightening member 4 is formed with a tapered surface 41 and a groove portion 42. The groove portion 42 is arranged on the side of the tightening member 4 opposite to the side on which the tapered surface 41 is formed.

As shown in FIG. 4, the tapered surfaces 41a and 41b formed on the respective tightening members 4a and 4b are inclined arc surfaces (convex curved surfaces) corresponding to the shapes of the tapered guide surfaces 31a and 31b. It is formed like this. The tapered surfaces 41a and 41b are formed so as to be inclined so as to be separated from each other as they approach the rotation shaft 2c.

The tightening member 4 is slidably provided along the tapered guide surface 31 of the protector 3 in a direction toward or away from the rotation shaft 2c.

In this way, the contact surface between the protectors 3a and 3b and the tightening members 4a and 4b is formed in a tapered shape that gradually narrows as the distance from the rotating shaft 2c increases. As a result, when the tightening members 4a and 4b move away from the rotating shaft 2c with the striking plate 1 sandwiched between them, the tightening members 4a and 4b can tighten and fix the striking plate 1 by taper engagement. can.

Since the tapered guide surface 31 is formed as a concave curved surface, the tightening member 4 in a direction parallel to the axial direction of the rotor 2 in a state where the protector 3 and the tightening member 4 are tapered engaged with each other. Can be prevented from shifting. That is, by forming each of the contact surfaces of the protector 3 and the tightening member 4 on a concave curved surface and a convex curved surface, it is possible to realize a centering action by overlapping arc-shaped irregularities. can. As described above, the curved shapes of the tapered guide surface 31 and the tapered surface 41 substantially function as a regulating portion that restricts the tightening member 4 from moving in the direction of the rotating shaft 2c.

The groove portion 42 is formed as a groove extending in a direction parallel to the rotation shaft 2c. By fitting a part of the striking plate 1 into the groove portion 42, the tightening member 4 does not move relative to the striking plate 1 in the direction perpendicular to the groove. That is, in a state where the tightening member 4 sandwiches the striking plate 1, the tightening member 4 moves in conjunction with the movement of the striking plate 1 in the direction of approaching or moving away from the rotation shaft 2c.

As described above, the protector 3 and the tightening member 4 are merely arranged so that the tapered surfaces can come into contact with each other, and are easily attached or detached. Therefore, maintenance work such as replacement of parts is also easy. Further, since the displacement of the striking plate 1 is prevented by the stop portion 12, the support for preventing the displacement of the striking plate as in Patent Document 2 can be omitted. Therefore, since a protector having a special shape into which the support can be inserted is not required, all the protectors 3 can have the same shape. As a result, the manufacturing cost can be reduced and the labor of parts management can be reduced.

Further, in the present embodiment, the taper guide surface 31 is not formed on the disk main body 24, but is formed on the protector 3 detachably attached to the disk main body 24. Therefore, for example, even if the taper guide surface 31 is worn due to long-term use, the repair can be completed simply by replacing the protector 3 without requiring repair work such as welding. As a result, the work load can be reduced, and the disc body 24 can be prevented from being distorted due to heat when welding is performed.

Next, the configuration of the striking plate 1 used in the crusher 100 of the present embodiment will be described in detail with reference to FIGS. 1 to 5. FIG. 5 is a perspective view illustrating the configuration of the striking plate 1.

As shown in FIG. 1, the striking plates 1 are radially attached to the outer periphery of the rotor 2 at equal intervals in the circumferential direction and radially outward with the rotation shaft 2c as the center.

As shown in FIG. 3 and the like, the striking plate 1 has a thickness and is formed in a plate shape (specifically, a rectangular plate shape) having two sides facing each other. The rectangle of the striking plate 1 has two sets of two sides facing each other, and striking portions 10a and 10b are formed on the two sides belonging to one set. In the following description, with respect to the striking plate 1, the direction along the side on which the striking portions 10a and 10b are arranged may be referred to as the width direction. Further, the direction perpendicular to both the thickness direction and the width direction (in other words, the direction in which the striking portions 10a and 10b face each other) may be referred to as the height direction. However, the name of this direction does not limit the direction of the striking plate 1.

The striking portions 10a and 10b are arranged so as to face each other in the height direction. The striking plate 1 is oriented so that its height direction and the radial direction of the rotor 2 coincide with each other, and the thickness direction and the circumferential direction of the rotor 2 coincide with each other, and one end in the height direction of the rotor 2 It is attached to the rotor 2 in a state of protruding to the outer periphery. As a result, the width direction is directed in the direction parallel to the rotation axis 2c of the rotor 2. The striking plate 1 has a dimension capable of straddling two rotating discs 22 in the width direction.

When the new striking plate 1 is attached to the rotor 2, which of the two striking portions 10a and 10b is used for crushing is arbitrarily selected. Then, in the striking plate 1, the striking portion 10a on the selected side projects outward from the rotating disc 22, while the striking portion 10b on the opposite side is inserted into the accommodating recess 23 of the rotating disc 22 so that the rotor 2 It is attached to.

As shown in FIG. 3, the striking plate 1 has a hook portion 11 and a stop portion 12. The stop portion 12 is arranged at a different location from the hook portion 11.

As shown in FIG. 4, the hooking portion 11 and the stopping portion 12 are formed so as to correspond to each other on both side surfaces of the striking plate 1 in the thickness direction. Both the hook portion 11 and the stop portion 12 are formed so as to be convex in the thickness direction.

As shown in FIG. 3, the hooking portion 11 is arranged between the two striking portions 10a and 10b and at the central portion in the height direction of the striking plate 1. Only two hooking portions 11 are formed on one surface of the striking plate 1 in the thickness direction (that is, the number of rotating discs 22 to which the striking plate 1 is fixed). Each hook portion 11 has two convex portions 11a and 11b extending in the width direction of the striking plate 1.

When viewed in the thickness direction of the striking plate 1, the convex portions 11a and 11b are formed symmetrically about a straight line that divides the height of the striking plate 1 into two equal parts, as shown in FIG. In the following description, this axis may be referred to as the axis of symmetry. The axis of symmetry 1a is oriented parallel to the width direction of the striking plate 1. The longitudinal direction of the convex portions 11a and 11b is parallel to the axis of symmetry 1a.

Both the convex portions 11a and 11b can be fitted into the groove portion 42 of the tightening member 4. By sliding the tightening member 4 in a direction parallel to the axis of symmetry 1a (rotational axis 2c), the tightening member 4 engages with the hooking portion 11 in the first state and the engagement is released from the second state. You can switch between states.

The convex portion 11a and the convex portion 11b are relatively concave, but are elongated in a direction parallel to the axis of symmetry 1a so as to be connected to the concave portion (from the side opposite to the stop portion 12). A linear guide groove 13 is formed in the striking plate 1. By inserting a portion that is relatively convex around the groove portion 42 of the tightening member 4 into the guide groove 13, the sliding direction of the tightening member 4 can be guided.

In the first state in which the tightening members 4 arranged on both sides of the striking plate 1 are fitted to the hooking portion 11 (convex portion 11b in FIG. 3), the striking plate 1 and the tightening members 4a and 4b are centrifugal. When the protector 3a, 3b and the tightening members 4a, 4b are moved away from the rotating shaft 2c by force, a taper engagement occurs, and the striking plate 1 is fixed to the rotor 2.

As described above, since the striking plate 1 can be easily fixed to the rotating disk 22 with a simple structure, the work can be simplified.

The size of the size of the striking plate 1 in the width direction is arbitrary, but in the striking plate 1 of the present embodiment, the length straddles the two rotating discs 22 and the hooking portion 11 is on one side in the thickness direction. Two are provided for each surface. As a result, the mounting work becomes easier as compared with the case where the striking plate 1 is mounted for each of the rotating discs 22. Further, the striking plate 1 can be securely fixed to the crusher 100 at two places.

Like the hooking portion 11, the stopping portion 12 is also arranged between the two striking portions 10a and 10b and at the central portion in the height direction of the striking plate 1. Each stop 12 is formed in a rectangular shape.

In the present embodiment, two hooking portions 11 are arranged side by side, and the stopping portion 12 is arranged in a gap between the hooking portions 11 and the hooking portions 11 adjacent to each other. Therefore, when paying attention to the stop portion 12, the hook portions 11 are arranged on both sides thereof. Further, when the striking plate 1 is mounted on the rotor 2, the stop portion 12 is arranged at a position between the adjacent rotating discs 22 as shown in FIG.

As shown in FIG. 5, comparing the contour in which the hook portion 11 is cut by the plane P1 perpendicular to the axis of symmetry 1a and the contour in which the stop portion 12 is cut by the plane P2 perpendicular to the axis of symmetry 1a are compared. The non-convex portion in the cross-sectional contour 11s of the hooking portion 11 corresponds to the convex portion in the cross-sectional contour 12s of the stopping portion 12. Therefore, when viewed in the direction of the axis of symmetry 1a (in other words, the direction in which the tightening member 4 slides to switch between the first state and the second state described above), the hooking portions 11 are formed in pairs. At least a part of the stop portion 12 can be seen from between the convex portions 11a and 11b. Furthermore, when the tightening member 4 is engaged with the hooking portion 11 and viewed in the direction of the axis of symmetry 1a, the tightening member 4 and the stopping portion 12 interfere with each other.

As a result, even if the striking plate 1 mounted on the rotor 2 tries to move in the width direction (direction of the rotation axis 2c) as shown in FIG. 3, the movement is tapered and engaged with the protector 3. It is prevented by the stopping portion 12 hitting the attached member 4. Further, the tightening member 4 is restrained by the protector 3 in the tapered engaged state by the curved shape of the contact surface with the protector 3 as described above. In this way, it is possible to prevent the striking plate 1 from being displaced in the width direction.

With the arrangement of the stop portion 12 as described above, regardless of which of the plurality of hook portions 11 provided on the striking plate 1, the stop portion 12 is on one side with respect to the hook portion 11. Is placed only. Therefore, the tightening member 4 can be slid in the direction of the axis of symmetry 1a and meshed with the hooking portion 11 from the side where the stopping portion 12 is not provided.

As shown in FIG. 3 and the like, a fixing hole (fixing portion) 12h into which a rod-shaped member can be inserted is formed in the central portion of the stopping portion 12. The fixing holes 12h are formed so as to correspond to each other on both side surfaces of the striking plate 1 in the thickness direction. By using this fixing hole 12h, the fixing portion 12 can be fixed to the hanging jig 60 described later.

As described above, the fixing hole 12h is formed in the stop portion 12 located between the rotating discs 22 when the striking plate 1 is mounted on the rotor 2. Therefore, the hanging jig 60 can be easily fixed to the striking plate 1 attached to the rotor 2.

Due to the nature of the crusher 100, the striking portion 10 of the striking plate 1 inevitably wears as it is used. In this respect, in the crusher 100 of the present embodiment, the continuous service life of the striking plate 1 is extended by switching between the operation in the forward rotation and the operation in the reverse rotation. Further, when the striking plate 1 is worn as shown by the dotted line in FIG. 1, the life of the striking plate 1 can be further extended by inverting the striking plate 1 in the height direction and attaching the striking plate 1.

Next, a method of attaching the striking plate 1 to the rotor 2 (a striking plate mounting method) will be described with reference to FIGS. 6 to 10. FIG. 6 is a cross-sectional view showing a state in which a part of the casing 90 is opened in order to attach the striking plate 1 to the rotor 2. FIG. 7 is an enlarged view showing how the striking plate 1 lifted by the hanging jig 60 is inserted into the accommodating recess 23 of the rotating disc 22. FIG. 8 is an enlarged view showing a state in which the striking plate 1 is inserted into the accommodating recess 23. FIG. 9 is a perspective view showing how the tightening member 4b is inserted between the striking plate 1 and the protector 3b from the state of FIG. FIG. 10 is an enlarged view showing a state in which the striking plate 1 is mounted on the rotating disc 22.

The work of attaching the striking plate 1 will be described in order. First, as shown in FIG. 6, a part of the casing 90, specifically, a part immediately beside the supply port 91 is opened. Around this time, the rotor 2 is rotated so that the position of the rotor 2 where the striking plate 1 is attached is exposed at the open portion 90e of the casing 90. That is, the rotation phase of the rotating disk 22 is adjusted so that the open side of the accommodating recess 23 to which the striking plate 1 is attached faces diagonally upward toward the open portion 90e of the casing 90 (phase adjustment step). As a result, in the crusher 100 of the present embodiment, which is a double-rotation type, the configuration around the supply port 91 arranged directly above the rotating shaft 2c does not get in the way, and a large working space for attaching the striking plate 1 is secured. can do.

Subsequently, as shown in FIG. 7, the striking plate 1 is lifted by a hanging jig 60 formed in a gate-shaped frame shape. The hanging jig 60 includes an arm 61, a hanging portion 62, and a fixing bolt 63.

The arms 61 are arranged in pairs so as to extend parallel to each other, and the striking plate 1 can be inserted between them. The arm 61 is elongated and its tip can be inserted into a gap between a plurality of rotating discs 22 arranged side by side.

The hanging portion 62 is fixed at an appropriate position on the hanging jig 60. The suspension portion 62 is formed with a through hole through which a wire attached to an appropriate lifting device (for example, a chain block, a hoist crane, etc.) can be passed.

The set bolt 63 is attached to each arm 61. The tips of the respective stop bolts 63 are arranged so as to face the space inside the pair of arms 61. Further, the tips of the set bolts 63 of the respective arms 61 are arranged so as to face each other. The tip of the stop bolt 63 can be inserted into the fixing hole 12h formed in the stop portion 12 of the striking plate 1.

Each set bolt 63 is screwed to the arm 61, and the protruding length thereof can be changed by rotating the set bolt 63. With this configuration, the suspension jig 60 can be attached to the striking plate 1 by rotating the two set bolts 63 and tightening the bolts with their tips inserted into the fixing holes 12h.

The position of the hanging portion 62 fixed to the hanging jig 60 is set so that the striking plate 1 is in an appropriate inclined posture as shown in FIG. 7 when it is lifted. This makes it easier to insert the striking plate 1 diagonally into the accommodating recess 23.

As shown in FIG. 7, in the accommodating recess 23 of the rotating disc 22, only the tightening member 4a located relatively downward among the pair of tightening members 4a and 4b is arranged. The tightening member 4a is positioned in contact with the tapered guide surface 31a of the protector 3a and in a state where the lower end is received by the second protrusion 34. In this state, the striking plate 1 in an oblique posture is moved in a direction approaching the rotation shaft 2c, and is inserted into the accommodating recess 23 so that the convex portion 11b of the hook portion 11 can be fitted into the groove portion 42 of the tightening member 4a. (Insert process). Since one of the pair of tightening members 4b is temporarily removed, there is a gap of 1 for moving the striking plate 1 in order to engage the convex portion 11b with the groove portion 42 of the tightening member 4a. It is secured between the pair of protectors 3a and 3b.

After the insertion step is completed, the hanging jig 60 is removed from the striking plate 1 by loosening the fixing bolt 63. This state is shown in FIG.

After that, the temporarily removed tightening member 4b is inserted between the protector 3b and the striking plate 1 by sliding the tightening member 4b in a direction parallel to the rotation shaft 2c as shown in FIG. 9, and is shown in FIG. As described above, the convex portion 11b is fitted into the groove portion 42 of the tightening member 4b (mounting step). The direction in which each tightening member 4b is slid is a direction approaching the stop portion 12.

At this time, since the original tightening member 4a is located close to the rotating shaft 2c and the other tightening member 4b is also inserted close to the rotating shaft 2c, the gap required for inserting the tightening member 4b is 1 It is secured between the pair of protectors 3a and 3b. By this slide movement, the second state in which the tightening member 4b and the hooking portion 11 do not mesh with each other is switched to the first state in which the tightening member 4b and the hooking portion 11 mesh with each other, as shown in FIG. The striking plate 1 can be attached to the rotating disk 22.

After mounting one striking plate 1 on the two rotating discs 22, another striking plate 1 is similarly mounted on the remaining two rotating discs 22. After mounting two striking plates 1 on the rotating disc 22 side by side in the direction of the rotating shaft 2c, the rotor 2 is rotated to adjust the rotational phase of the rotating disc 22, and the striking plates are placed in the other accommodating recesses 23 of the rotating disc 22. Install two 1's each.

After that, when the rotor 2 is rotated for the operation of the crusher 100, the striking plate 1 and the tightening members 4a and 4b are moved away from the rotating shaft 2c by centrifugal force. As a result, the striking plate 1 is tightened in the thickness direction by the taper engagement between the protectors 3a and 3b and the tightening members 4a and 4b, and as a result, the striking plate 1 is firmly fixed to the rotor 2. In this way, the striking plate 1 can be attached to the rotating disc 22 with a simple operation.

Regarding the work of removing the striking plate 1 from the rotating disc 22, the protectors 3a and 3b and the tightening members 4a and 4b are subjected to an impact on the striking plate 1 from the outside in the radial direction while the rotation of the rotor 2 is stopped. After releasing the taper engagement with the above operation, substantially the reverse of the above operation may be performed.

As a result, when the striking portion 10a on one side of the striking plate 1 is worn due to use, the striking plate 1 is removed from the rotor 2 and the direction is reversed so that the striking portion 10b on the other side is radially outward. The work of attaching the rotor 2 to the rotor 2 can be easily performed.

Next, various modifications relating to the protector 3 and the tightening member 4 will be described with reference to FIGS. 11 and 12.

In the example of FIG. 11A, the tapered guide surface 31 of the protector 3 is configured as a convex curved surface, and the tapered surface 41 of the tightening member 4 is configured as a concave curved surface. In this way, even if the concave and convex surfaces that come into contact with each other are opposite to those in FIG. 4, the displacement of the tightening member 4 in the direction of the rotation shaft 2c can be regulated.

In the example of FIG. 11B, the tapered guide surface 31 of the protector 3 and the tapered surface 41 of the tightening member 4 are both formed in a V-shaped cross section. Similar to the relationship between FIGS. 4 and 11 (a), the V-shaped unevenness may be opposite to the configuration of FIG. 11 (b).

In the example of FIG. 11C, the tapered guide surface 31 of the protector 3 has a flat taper, and the tapered surface 41 of the tightening member 4 is also the same. However, an elongated groove 31 m is formed on the tapered guide surface 31 of the protector 3, and an elongated protrusion 41 m that can be inserted into the groove 31 m is formed on the tapered surface 41 of the tightening member 4. The groove 31m and the protrusion 41m function as a regulating portion that regulates the displacement of the tightening member 4 with respect to the protector 3 in the direction of the rotating shaft 2c. Further, a groove 31 m having a width larger than the width of the tightening member 4 can be formed on the tapered guide surface 31 of the protector 3. In this case, the tightening member 4 does not have to be provided with the protrusion 41 m.

In the example of FIG. 12A, the tapered guide surface 31 of the protector 3 is formed as a flat surface 31p only on a part of the side close to the rotation shaft 2c, and as a concave curved surface 31q on the rest. Correspondingly, the tapered surface 41 of the tightening member 4 is formed as a flat surface 41p only on a part on the side close to the rotating shaft 2c, and as a convex curved surface 41q on the rest. In this configuration, by hooking the convex curved surface 41q on the concave curved surface 31q, it is possible to prevent the tightening member 4 from falling from the protector 3 when the striking plate 1 is attached or detached. Along with this, in the configuration of FIG. 12A, the second protrusion 34 is omitted in the protector 3.

In the example of FIG. 12B, in the second protrusion 34 of the protector 3, stopper portions (regulatory portions) 34s are formed at both ends in the direction of the rotation shaft 2c. As shown in FIG. 7, the stopper portions 34s are located on both sides of the lower end portion of the tightening member 4 when the protector 3 receives the tightening member 4 from below by the second protrusion 34. As a result, even if the striking plate 1 to be inserted hits the tightening member 4, the tightening member 4 can be prevented from being displaced in the direction of the rotation shaft 2c. The stopper may be provided on the tightening member 4 instead of the protector 3.

In the example of FIG. 12C, stopper portions (regulatory portions) 31s are formed at both ends in the direction of the rotating shaft 2c only on a part of the tapered guide surface 31 of the protector 3 on the side far from the rotating shaft 2c. ing. The stopper portions 31s are located on both sides of the tightening member 4 only when the tightening member 4 is located far from the rotation shaft 2c. With this configuration as well, it is possible to regulate the deviation of the tightening member 4 in the direction of the rotating shaft 2c. Both the tapered guide surface 31 and the tapered surface 41 are formed as a flat taper. Since the stopper portion 31s is provided only on a part of the side far from the rotating shaft 2c, when the tightening member 4 is slid in the direction parallel to the rotating shaft 2c, the stopper portion 31s becomes the tightening member 4. It does not interfere.

Next, the striking plates 1x and 1y according to the modified example of the striking plate 1 will be described with reference to FIGS. 13 and 14.

The striking plate 1x of the modified example shown in FIG. 13 has a small step 14 around the hooking portion 11 that restricts the tightening member 4 in the state of being meshed with the hooking portion 11 from moving along the axis of symmetry 1a. It is formed. As a result, the misalignment of the striking plate 1x can be reliably prevented. Further, as can be seen by comparing FIG. 13 and FIG. 5, the above-mentioned guide groove 13 is formed in a tapered shape at the end portion of the striking plate 1x in the width direction so that the groove width widens as it approaches the end portion. Has been done. As a result, the tightening member 4b can be slid and inserted between the striking plate 1 and the protector 3b smoothly.

In the striking plate 1x, a plurality (two) of the fixing holes 12h are formed in the height direction, and the fixing holes 12h are arranged so as to be symmetrical with respect to the axis of symmetry 1a. As a result, regardless of which of the two striking portions 10a and 10b is placed on the upper side of the new striking plate 1x, the fixing bolt of the suspension jig 60 is placed in the fixing hole 12h located above the center of gravity of the striking plate 1x. By inserting and suspending, the striking plate 1x in the suspended state can be stabilized. If one of the two striking portions 10a and 10b is worn, the position of the center of gravity of the striking plate 1x changes. Therefore, if two fixing holes 12h are formed at different positions in the height direction, the striking plate 1x can be formed. The suspended load can be stabilized in the work of attaching to the rotor 2 after reversing in the height direction. It is preferable to increase the distance between the two fixing holes 12h to some extent in case one side is significantly worn. The striking plate 1 of FIG. 5 and the striking plate 1y of FIG. 14 can also be changed to a configuration having a plurality of fixing holes 12h.

The striking plate 1y of the modified example shown in FIG. 14 is mounted across four rotating discs 22 instead of two. Therefore, in the striking plate 1y, four hooking portions 11 are arranged on one surface in the thickness direction. In this way, the number of rotating discs 22 to which one striking plate 1y is fixed is arbitrary, and the number of hooking portions 11 can be determined accordingly. The number of hooking portions 11 can be changed to, for example, three or five or more.

In this modification, since four hooking portions 11 are arranged side by side, there are three gaps between the hooking portions 11 and the hooking portions 11 adjacent to each other. The stoppers 12 are arranged (two) in a gap other than the center with respect to the three side-by-side gaps. Therefore, regardless of which of the two stop portions 12 is focused on, the hook portions 11 are arranged on both sides thereof. Further, when the striking plate 1y is mounted on the rotor, the respective stop portions 12 are arranged at positions between the adjacent rotating discs 22.

When lifting the striking plate 1y, two hanging jigs 60 having the same configuration are prepared, and each of them is mounted in the fixing holes 12h of the two stopping portions 12 shown in FIG. By using the two hanging jigs 60 in this way, the striking plate 1y can be lifted in a stable posture.

As described above, as shown in FIG. 5, the striking plate 1 of the present embodiment is formed in a plate shape having two sides facing each other in the height direction, and the striking portions 10a, formed on each of the sides, It can be mounted on the crusher 100 so that any of 10b selected acts on the raw material 70. The striking plate 1 has a hooking portion 11 and a stopping portion 12. The hook portion 11 is formed including a portion that is convex in the thickness direction. The stop portion 12 is arranged at a position different from that of the hook portion 11, and is formed including a portion that is convex in the thickness direction. The hooking portion 11 and the stopping portion 12 are arranged at an intermediate position between the two striking portions 10a and 10b.

As a result, when the striking portion (for example, striking portion 10a) on one side is worn, the striking portion (striking portion 10b) on the other side is used by reversing the direction of attachment to the crusher 100. The life of the striking plate 1 can be extended. Further, the striking plate 1 can be fixed to the crusher 100 by engaging the tightening member 4 provided in the crusher 100 with the hooking portion 11. Further, even if the striking plate 1 tries to move along the axis of symmetry 1a of the two striking portions 10a and 10b, the stopper portion 12 interferes with the tightening member 4, so that the movement of the striking plate 1 is blocked by the stopper portion 12. be able to. As a result, it is possible to prevent the striking plate 1 from coming off from the crusher 100.

Further, in the striking plate 1 of the present embodiment, a plurality of hooking portions 11 are arranged side by side in the direction of the axis of symmetry 1a of the two striking portions 10a and 10b. In any of the plurality of hooking portions 11, the stopping portion 12 is arranged on only one side in the direction of the axis of symmetry 1a.

As a result, the tightening member 4 can be engaged with the hooking portion 11 of the striking plate 1 by moving the tightening member 4 in the direction of the axis of symmetry 1a from the side where the stop portion 12 is not arranged.

Further, in the striking plate 1 having the configuration shown in FIG. 5, two hooking portions 11 are arranged on one surface in the thickness direction.

As a result, the striking plate 1 can be reliably fixed to the crusher 100 at two locations.

Further, in the striking plate 1 of the present embodiment, the stop portion 12 is arranged so as to be adjacent to the hook portion 11 in a direction parallel to the axis of symmetry 1a of the two striking portions 10a and 10b. The non-convex portion in the cross-sectional contour 11s in which the hook portion 11 is cut by the plane P1 perpendicular to the axis of symmetry 1a corresponds to the convex portion in the cross-sectional contour 12s in which the stop portion 12 is cut by the plane P2 perpendicular to the axis of symmetry 1a. is doing.

As a result, the movement of the striking plate 1 in the direction of the rotating shaft 2c can be prevented by the stopping portion 12 interfering with the tightening member 4, and the striking plate 1 can be suitably fixed.

Further, in the striking plate 1 of the present embodiment, two hooking portions 11 are arranged side by side in the direction of the axis of symmetry of the two striking portions 10a and 10b. The stop portion 12 is arranged so as to be sandwiched by the hook portion 11 in the direction of the axis of symmetry 1a.

Thereby, a simple structure of the striking plate 1 can be realized.

Further, in the striking plate 1 of the present embodiment, the fixing hole 12h which is a recess is formed on the surface of the striking plate 1 facing the thickness direction.

Thereby, for example, by fixing the hanging jig 60 to the fixing hole 12h, it becomes easy to put the striking plate 1 in an appropriate posture when attaching the striking plate 1 to the crusher 100. Further, in a state where a plurality of striking plates 1 are attached to the rotor 2 while being close to each other as shown in FIG. 3, when the striking plates 1 are removed one by one for the purpose of reversal or the like, the width direction of the striking plates 1 is tentatively If fixing holes are formed on both ends, the striking plate 1 must be slightly moved in the width direction to form a gap between the striking plate 1 and the adjacent striking plate 1 in order to fix the hanging jig to the fixing holes. Must be. In this respect, in the striking plate 1 of the present embodiment, such work can be omitted and the striking plate 1 can be fixed to the fixing hole 12h so as to be sandwiched in the thickness direction by the hanging jig 60. Therefore, work efficiency can be improved.

Further, in the striking plate 1 of the present embodiment, the fixing hole 12h is formed in the stop portion 12.

Thereby, a simple structure of the striking plate 1 can be realized.

However, for example, the fixing hole 12h may be omitted so that the stopping portion 12 also serves as a fixing portion for fixing the hanging jig. For example, it is conceivable that the hanging jig is fixed to the stopping portion 12 by grasping the convex shape of the stopping portion 12 with the hanging jig.

Also in this case, a simple configuration of the striking plate 1 can be realized.

Further, the crusher 100 of the present embodiment includes a striking plate 1, a rotating disc 22, and a tightening member 4. The striking plates 10a and 10b are formed on the striking plate 1. The rotating disk 22 is formed with an accommodating recess 23 capable of accommodating a part of the striking plate 1, and is rotatably supported around the rotating shaft 2c. The tightening members 4 are arranged in pairs in the accommodating recesses 23 so as to face each other with the striking plate 1 interposed therebetween, and each of them can move in the direction parallel to and perpendicular to the rotation shaft 2c. The rotating disk 22 is formed with a tapered guide surface 31 that guides the tightening member 4 so that the distance between the pair of tightening members 4 decreases as the tightening member 4 moves away from the rotating shaft 2c. The tightening member 4 is formed with a tapered surface 41 corresponding to the tapered guide surface 31a. The striking plate 1 is formed including a portion that is convex in the thickness direction, and has a hooking portion 11 that can mesh with the tightening member 4. By moving the tightening member 4 in a direction parallel to the rotation shaft 2c, between the first state in which the tightening member 4 meshes with the hooking portion 11 and the second state in which the meshing is released. It is configured to be switchable. By moving the striking plate 1 together with the tightening member 4 in the first state in a direction away from the rotation shaft 2c, the tapered guide surface 31a and the tapered surface 41 are tapered and engaged with each other.

As a result, by rotating the rotating disc 22 with the tightening member 4 in the first state, the striking plate 1 and the tightening member 4 move in a direction away from the rotating shaft 2c due to centrifugal force, which occurs at this time. The tightening member 4 tightens the striking plate 1 by the taper engagement. As a result, the striking plate 1 can be fixed to the rotating disc 22.

Further, in the configurations shown in FIGS. 4, 11 (a), 11 (b), 12 (a), and 12 (b), the taper guide surface 31 included in the protector 3 is a taper of the tightening member 4. The tightening member 4 is guided so that the distance between the pair of tightening members 4 decreases as the distance that the position of the surface 41 deviates from the tapered guide surface 31 in the direction of the rotation axis 2c increases.

This makes it possible to prevent the tightening member 4 from coming off the rotating disc 22 during the rotating operation.

On the other hand, in the configuration shown in FIGS. 11 (c), 12 (b), and 12 (c), the tightening member 4 rotates on at least one of the tightening member 4 and the rotating disc 22 (protector 3). A regulating portion is formed that regulates the movement of the disk 22 in the direction of the rotating shaft 2c.

As a result, it is possible to prevent the tightening member 4 from being unexpectedly detached from the rotating disc 22.

Further, in the crusher 100 of the present embodiment, the rotating disc 22 includes a disc main body 24 and a protector 3. The protector 3 is detachably fixed to the disc body 24. The tapered guide surface 31 is formed on the protector 3.

As a result, even if the taper guide surface 31 is worn, maintenance can be facilitated because it is sufficient to replace the protector 3 for repair.

Further, in the crusher 100 of the present embodiment, the striking plate 1 on which the striking portions 10a and 10b are formed is attached to the rotating disk 22 included in the double-rotating type crusher 100 by the following method. This striking plate mounting method includes a phase adjusting step, an insertion step, and a mounting step. In the phase adjusting step, the rotation phase of the rotating disc 22 is adjusted so that the open side of the accommodating recess 23 formed in the rotating disc 22 for accommodating a part of the striking plate 1 is obliquely upward. In the insertion step, the striking plate 1 is moved in a direction approaching the rotation shaft 2c of the rotation disc 22 and inserted into the accommodating recess 23. In the mounting step, the striking plate 1 inserted into the accommodating recess 23 is mounted on the rotating disc 22.

As a result, workability when the striking plate 1 is attached to the rotating disc 22 can be significantly improved.

Further, in the present embodiment, in the phase adjustment step, the rotation phase of the rotating disk 22 is adjusted so that the open side of the accommodating recess 23 faces diagonally upward. In the insertion step, the striking plate 1 is inserted into the accommodating recess 23 from the open side in a state where the striking plate 1 is lifted via the hanging jig.

As a result, in the double-rotation type crusher 100, the configuration around the supply port 91 arranged directly above the rotating shaft 2c does not get in the way, and the striking plate 1 can be attached while ensuring a large working space around it. can.

Further, the crusher 100 of the present embodiment includes a tightening member 4 that can be arranged in the accommodating recess 23 in pairs so as to face each other with the striking plate 1 sandwiched between them. Each of the tightening members 4 can move in the direction parallel to and perpendicular to the rotation shaft 2c. In the insertion step, the striking plate 1 is inserted into the accommodating recess 23 with the tightening member 4a located on the lower side of the pair arranged in the accommodating recess 23. In the mounting step, the tightening member 4b located on the upper side of the pair is moved in the direction parallel to the rotation shaft 2c to be arranged in the accommodating recess 23. After the mounting step, the striking plate 1 moves away from the rotating shaft 2c together with the two tightening members 4a and 4b, so that the tightening members 4a and 4b can be tapered and engaged with the rotating disk 22.

As a result, the tightening member 4a, the striking plate 1, and the tightening member 4b are assembled in this order in the state where the taper engagement is released, and then the striking plate 1 is tightened and fixed by the taper engagement. The plate 1 can be attached to the rotating disk 22.

Next, a second embodiment of the striking plate 1 will be described. FIG. 15 is a perspective view showing the striking plate 1p of the second embodiment. FIG. 16 is a perspective view showing a state in which the striking plate 1p of the second embodiment is attached to the rotor 2. FIG. 17 is a front view and a side sectional view showing a state in which the striking plate 1p of the second embodiment is lifted by the hanging jig 60x. In the description of this embodiment, the same or similar members as those in the above-described embodiment may be designated by the same reference numerals in the drawings, and the description may be omitted.

The striking plate 1p of the present embodiment shown in FIG. 15 includes a first stop portion 52 and a second stop portion 15.

Four first stop portions 52 are arranged on one surface of the striking plate 1p on one side in the thickness direction. The first stop portion 52 is arranged at one end of the hooking portion 11 in the width direction of the striking plate 1p, and is formed so as to be convex further outward than the hooking portion 11 in the thickness direction of the striking plate 1p. ing.

The first stop portion 52 is formed at an end portion of a pair of hooking portions 11 arranged side by side near the hooking portions 11 on the opposite side of the pair. That is, the first stop portion 52 is formed at the end portion of the hook portion 11 located on the side far from the end portion in the width direction of the striking plate 1p.

As a result, when the tightening member 4 is slid from both sides of the striking plate 1p in the width direction in the direction parallel to the rotation shaft 2c, the first stop portion 52 does not interfere and easily meshes with the hook portion 11. can.

The first stop portion 52 is arranged at one end of each of the two convex portions 11a and 11b provided by the hook portion 11, and is integrally formed with the convex portions 11a and 11b. That is, the first stop portion 52 is configured such that a part of one end portion of the convex portions 11a and 11b further protrudes outward in the thickness direction of the striking plate 1p.

In other words, when viewed in the height direction of the striking plate 1p (the direction connecting the two striking portions 10a and 10b), the integrally formed convex portions 11a and 11b and the first stopping portion 52 are L-shaped as a whole. It has become.

In the state where the striking plate 1p is attached to the rotor 2 (the state shown in FIG. 16), the four first stopping portions 52 included in the pair of hooking portions 11 are a pair for fixing the striking plate 1p. It is located between the protectors 3 of. Each of the first stop portions 52 is formed so as to face the protector 3 in which the tightening member 4 meshing with the hook portion 11 is tapered and engaged with the protector 3 with a slight gap in the width direction of the striking plate 1p. ..

As a result, as shown in FIG. 16, in a state where the striking plate 1p is fixed to the rotor 2, the striking plate 1p moves in the direction of the rotation shaft 2c, which is the first stop portion 52 and the peripheral members. It can be prevented by contact with the protector 3. Therefore, it is possible to prevent the rotor 2 from rotating and hitting the casing 90 or the like in a state where the striking plate 1p is displaced in the width direction, so that the smooth operation of the crusher 100 can be realized.

The second stop portion 15 is arranged in a gap between the hook portion 11 and the hook portion 11 adjacent to each other. The second stopping portion 15 interferes with the tightening member 4 to prevent the striking plate 1p from being displaced.

The second stop portion 15 is integrally formed with the two hook portions 11 so as to connect the pair of hook portions 11 to each other on each surface of the striking plate 1p in the thickness direction. The second stop portion 15 is formed in an elongated shape parallel to the direction in which the hook portions 11 are arranged. Both ends of the second stop portion 15 in the longitudinal direction are located between the two convex portions 11a and 11b of the hook portion 11.

In each hooking portion 11, the end portion 15a of the second stopping portion 15 is arranged at a position closer to the widthwise end portion of the striking plate 1p than the first stopping portion 52 formed on the hooking portion 11. There is. In other words, the second stop portion 15 is formed so as to extend closer to both ends in the width direction of the striking plate 1p than the first stop portion 52.

With this configuration, when the striking plate 1p is fixed to the rotor 2 as shown in FIG. 16, a portion that is relatively convex around the groove 42 of the tightening member 4 is an end portion of the second stop portion 15. It hits 15a. Due to this interference, the displacement of the striking plate 1p can be prevented.

In the present embodiment, both the first stop portion 52 and the second stop portion 15 correspond to the stop portions of the present invention.

In the present embodiment, the second stopping portion 15 also serves as a fixing portion for fixing the striking plate 1p of the present embodiment to the hanging jig 60x shown in FIG. Hereinafter, the hanging jig 60x will be described.

As shown in FIG. 17, the hanging jig 60x includes a pair of scissors-shaped arm portions 64 and a support shaft 68.

The pair of arm portions 64 are configured to intersect each other at a portion of a support shaft 68 arranged above the arm portions 64. A space into which the striking plate 1p can be inserted is formed between the lower portions of the arm portions 64.

The lower portions of the pair of arm portions 64 can be inserted into the gaps between the rotating discs 22 arranged side by side. The upper ends of the arm portions 64 are connected to each other by steel wires 69.

The pair of arm portions 64 are connected to each other via a support shaft 68 so as to be relatively rotatable. As a result, the arm portion 64 can be opened and closed around the support shaft 68. By closing the arm portion 64, the striking plate 1p can be sandwiched from both sides in the thickness direction of the striking plate 1p.

A first fixing plate 65 and a second fixing plate 66 are provided below each of the pair of arm portions 64. The first fixing plate 65 and the second fixing plate 66 are arranged so as to project in a rib shape in a direction approaching the arm portion 64 on the opposite side from the arm portion 64. The first fixing plate 65 and the second fixing plate 66 are arranged at intervals in the vertical direction, and a gap is formed between them into which the second stopping portion 15 of the striking plate 1p can be inserted. ..

With the above configuration, as shown in FIG. 17, with the second fixing portion 15 gripped by the first fixing plate 65 and the second fixing plate 66, the steel wire 69 is attached to the hanger 72 of the crane. Hang and pull up. Thereby, the striking plate 1p can be lifted by using the hanging jig 60x.

As shown in FIG. 17B, shallow recesses 16 into which the tips of the first fixing plate 65 and the second fixing plate 66 can be inserted are formed on the upper side and the lower side of the second fixing portion 15. .. The recess 16 is elongated in a direction parallel to the second stop 15. As a result, the substantially protruding amount of the second stop portion 15 can be increased, and the second stop portion 15 can be satisfactorily meshed with the lower portion of the arm portion 64. However, this recess 16 may be omitted.

In the present embodiment, the striking plate 1p is lifted in a vertical posture instead of an oblique posture. Therefore, the work of attaching the striking plate 1p is performed in a state where the rotation phase of the rotating disk 22 is adjusted so that the open side of the accommodating recess 23 to which the striking plate 1p is attached faces directly upward. When the striking plate 1p is inserted into the accommodating recess 23, not one of the pair of tightening members 4a and 4b but both are temporarily removed. After the striking plate 1p is inserted into the accommodating recess 23, both the tightening members 4a and 4b are inserted between the striking plate 1p and the protectors 3a and 3b by sliding in a direction parallel to the rotation shaft 2c. .. Other than the above, the work may be performed in the same manner as in the first embodiment. As described above, the striking plate 1p can be mounted on the rotating disc 22.

As described above, in the striking plate 1p of the present embodiment, as shown in FIG. 15, the first stop portion 52 is arranged at one end of the hook portion 11 in the direction of the axis of symmetry 1a, and is arranged in the thickness direction. It is formed so as to be more convex than the hook portion 11.

As a result, the movement of the striking plate 1p in the direction of the rotating shaft 2c can be prevented by the first stopping portion 52 interfering with the protector 3, for example, so that the striking plate 1p is more preferably fixed to the rotor 2. be able to.

Further, in the striking plate 1p of the present embodiment, the hooking portion 11 has two convex portions 11a and 11b extending in a direction parallel to the axis of symmetry 1a and arranged so as to be symmetrical with respect to the axis of symmetry 1a. The first stop portion 52 is formed on the convex portions 11a and 11b, respectively.

As a result, the hooking portion 11 and the first stopping portion 52 can be formed with a simple structure.

Further, in the striking plate 1p of the present embodiment, the hooking portions 11 are arranged so as to form a pair arranged in the direction of the axis of symmetry 1a. In each of the hooking portions 11, the first stopping portion 52 is formed at an end portion on the side close to the hooking portion 11 on the opposite side to be paired.

As a result, it is possible to preferably prevent the striking plate 1p from moving in the direction along the rotation shaft 2c while not interfering with the attachment / detachment of the tightening member 4.

Next, a modified example of the second embodiment will be described. FIG. 18 is a perspective view showing the striking plate 1q according to the modified example of the second embodiment. In the description of this embodiment, the same or similar members as those in the above-described embodiment may be designated by the same reference numerals in the drawings, and the description may be omitted.

In the striking plate 1q shown in FIG. 18, the first stop portion 52x is formed so as to connect one ends of the convex portions 11a and 11b provided by the hook portion 11. That is, the first pair of convex portions 11a and 11b included in the hook portion 11 are connected so that the convex portions formed in the same manner as the first stop portion 52 in FIG. 15 are connected in the height direction of the striking plate 1q. A stop 52x is formed.

The first stop portion 52x of this modification is formed on each of the paired hook portions 11 on the side close to each other, similarly to the first stop portion 52 in the second embodiment described above. In the present embodiment, the first stop portion 52x is formed at the end portion of the hook portion 11 located on the side far from both ends in the width direction of the striking plate 1q.

Even in this configuration, the displacement of the striking plate 1q in the direction of the rotation shaft 2c can be effectively prevented by the interference between the first stop portion 52x and the protector 3. Further, also in this modified example, the striking plate 1q can be suspended vertically by grasping the second stop portion 15 with the suspending jig 60x.

Although preferred embodiments and modifications of the present invention have been described above, the above configuration can be changed as follows, for example.

In the striking plate 1 of FIG. 5, the stopping portions 12 may be arranged outside the hooking portions 11 located at both ends in the width direction among the hooking portions 11 provided side by side in the width direction of the striking plate 1. .. The same applies to the striking plate 1x of FIG. 13 and the striking plate 1y of FIG.

In the striking plate 1p of FIG. 15, the first stopping portion 52 may be formed at the end of the hooking portion 11 located on the side close to both ends in the width direction of the striking plate 1p. Further, the first stop portion 52 may be formed on the hook portions 11 located at both ends in the width direction among the hook portions 11 provided side by side in the width direction of the striking plate 1p. The same applies to the striking plate 1q of FIG.

Instead of providing the stop portion 12 on the striking plate 1, a convex stop portion for restricting the slide movement of the tightening member 4 may be provided in, for example, the groove portion 42 of the tightening member 4.

The striking plates 1r and 1s of FIG. 19 are modified versions of the striking plate 1p of FIG. 15 and the striking plate 1q of FIG. That is, the second stop portion 15 can be omitted as in the striking plates 1r and 1s. As a configuration for fixing the striking plates 1r and 1s to the hanging jig, for example, a recess for hooking the first stopping portions 52 and 52x is provided on the hanging jig, and the first stopping portions 52 and 52x are provided. It is conceivable to provide a hanging jig with a structure for grasping and holding.

The guide grooves 13 formed in the striking plates 1, 1x, 1y, 1p, 1q, 1r, 1s may be omitted.

The protector 3 may be omitted, and the tapered guide surface 31 may be formed directly on the disk body 24.

As a configuration for fixing the striking plate 1 to the hanging jig 60, for example, a convex protrusion may be provided on the stop portion 12 instead of the concave fixing hole 12h.

The hooking portions 11 of the striking plates 1, 1x, 1y, 1p, 1q, 1r, 1s are configured so that the tightening member 4 meshes with the portions (convex portions 11a, 11b) that are convex in the thickness direction. Alternatively, the tightening member 4 may be configured to mesh with a portion (groove) that is concave in the thickness direction.

A mechanism for positioning the striking plates 1, 1x, 1y, 1p, 1q, 1r, 1s inserted in the accommodating recess 23 may be provided. For example, it is conceivable to form shallow grooves in the striking portions 10a and 10b on both sides of the striking plate 1 and insert the disc body 24 into the grooves to position the striking plate 1 with respect to the disc body 24. ..

When a work space can be secured directly above or beside the rotor 2, the rotation phase of the rotor 2 is adjusted so that the open side of the accommodating recess 23 faces vertically upward or horizontally horizontally, and then the striking plate with respect to the rotor 2. 1,1x, 1y, 1p, 1q, 1r, 1s can be mounted by inserting the accommodating recess 23 in the direction approaching the rotation shaft 2c from directly above or beside.

The shape of the stopper 12 is arbitrary and can be changed to various shapes such as a circle. Further, the portion that is convex in the cross-sectional contour 12s of the stop portion 12 may correspond to not all but a part of the portion that is not convex in the cross-sectional contour 11s of the hooking portion 11. The shapes of the first stop portions 52, 52x and the second stop portion 15 are also arbitrary.

In the hanging jig 60 shown in FIG. 7, by changing the position of the hanging portion 62 fixed to the hanging jig 60, the striking plate 1 can be suspended so as to be in a vertical posture.

In the work of removing the striking plates 1, 1x, 1y, 1p, 1q, 1r, 1s from the rotating disc 22, an impact may be applied to the striking portions 10a and 10b of the striking plate 1, but the portions other than the striking portions 10a and 10b. For example, an impact may be applied to the hooking portion 11, the stopping portion 12, the first stopping portion 52, the second stopping portion 15, or the like.

It is also possible to attach three or less or five or more striking plates 1, 1x, 1y, 1p, 1q, 1r, 1s at equal intervals in the circumferential direction of the rotor 2.

1 Strike plate 1a Symmetric axis 3 Protector 4 Tightening member (fixing member)
10a, 10b Strike part 11 Hook part 12 Stop part 22 Rotating disc (rotating plate)
31 Tapered guide surface 41 Tapered surface 70 Raw material (object to be crushed)
100 crusher

Claims (10)

The striking plate on which the striking part is formed and
A rotating plate in which a storage recess capable of accommodating a part of the striking plate is formed and is rotatably supported around a rotating shaft, and a rotating plate.
A tightening member which is arranged in the accommodating recess in pairs so as to face each other across the striking plate and can move in a direction parallel to and perpendicular to the rotation axis, respectively.
With
The rotating plate is formed with a tapered guide surface that guides the tightening member so that the distance between the pair of the tightening members decreases as the tightening member moves away from the rotating shaft.
A tapered surface corresponding to the tapered guide surface is formed on the tightening member.
The striking plate is formed including a portion that is convex or concave in the thickness direction, and has a hook portion that can mesh with the tightening member.
By moving the tightening member in a direction parallel to the rotation axis, the tightening member is engaged between the first state in which the tightening member engages with the hooking portion and the second state in which the engagement is released. It is configured to be switchable,
A crusher characterized in that the tapered guide surface and the tapered surface are tapered and engaged by moving the striking plate together with the tightening member in the first state in a direction away from the rotation axis. The crusher according to claim 1.
In the tapered guide surface, the distance between the pair of the tightening members decreases as the distance that the position of the tapered surface of the tightening member deviates from the tapered guide surface in the direction of the rotation axis increases. A crusher characterized in that the tightening member is guided in such a manner. The crusher according to claim 1 or 2.
At least one of the tightening member and the rotating plate is formed with a regulating portion that restricts the tightening member from moving in the direction of the rotating shaft with respect to the rotating plate. Crushing machine. The crusher according to any one of claims 1 to 3.
A crusher comprising a stopper portion for preventing the striking plate from moving in the direction of the rotating shaft with respect to the tightening member or the rotating plate. The crusher according to any one of claims 1 to 4.
The rotating plate is
Rotating plate body and
A protector that is detachably fixed to the rotating plate body and
With
A crusher characterized in that the tapered guide surface is formed on the protector. The crusher according to claim 5.
A crusher characterized in that a stopper portion is formed on the striking plate to prevent the striking plate from moving in the direction of the rotation axis with respect to the protector. The crusher according to claim 6.
A crusher characterized in that the stopper portion is more convex than the hook portion. The crusher according to claim 4.
The rotating plate is
Rotating plate body and
A protector that is detachably fixed to the rotating plate body and
With
The tapered guide surface is formed on the protector, and the taper guide surface is formed on the protector.
A crusher characterized in that the stopper portion of the striking plate, the tightening member, and the protector prevent the striking plate from being displaced in the direction of the rotation axis. The crusher according to claim 4, 6 or 8.
A crusher characterized in that an end surface in a protruding direction in which the stop portion protrudes in the thickness direction and an end surface in a protruding direction in which the hook portion protrudes in the thickness direction are flush with each other. The crusher according to any one of claims 1 to 9.
The striking plate is formed in a plate shape having two opposite sides.
A crusher characterized in that the striking portion is formed on each of the sides.

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