JPH029898Y2 - - Google Patents

Description

[Detailed description of the invention] (1) Industrial application field This invention relates to a rotor for a reversible rotation type impact crusher for crushing crushed stone and ores.

(2) Prior Art Conventionally, this type of impact crusher has been disclosed in Japanese Patent Application Laid-Open No. 60-99353 filed by the present applicant. This crusher is constructed as shown in FIGS. 4-8. That is, in FIG. 4, reference numeral 1 denotes a frame, on which is supported a rotating shaft 2 that is selectively rotated in both forward and reverse directions by a drive device (not shown). A rotor main body 4 having a plurality of plate-like bodies erected at appropriate intervals is fixed.

A plurality of mounting grooves 5 are formed radially at equal intervals on the circumference of the rotor body 4.
The mouth portions of the mouth portions are provided with lip portions 6 that face each other and protrude inwardly, and the mouth portions 6 have an inclined surface 7 that widens from the outside toward the inside (Fig. 6A). ).

A holder 8 is removably attached to this mouth edge 6. The holder 8 has a horizontal channel shape consisting of a top plate 10, a bottom plate 11, and a side plate 13, and sloped surfaces 15 and 16 are formed at the connecting corners of the top plate 10, the bottom plate 11, and the side plates 13. A similar sloped surface 9 that cooperates with the sloped surface 7 is provided on a part of the back surface of the side plate 13.
A connecting plate 12 connecting the top plate 10 and the bottom plate 11 is provided in the middle of this inclined surface part, and the connecting plate 12 and the side plates 13 have concentric through holes 1.
7, 18 are provided (Fig. 5 A, B). Such a holder 8 is attached to the top plate 1 as shown in FIG. 6B.
0 and the bottom plate 11, the top plate 10 is placed on the top plate 6, and the top plate 10 is mounted so as to create a gap between the top surface of the bottom plate 11 and the back surface of the bottom plate 6. As a result, the inclined surface 9 comes into contact with the inclined surface 7, and the front surface of the side plate 13 becomes substantially parallel to the radial direction of the rotor body 4, thereby forming a gap 14 having a width W between them.

A striking plate 21 is removably mounted between such holders 8. As shown in FIG. 7, this striking plate 21 has a front height h
(Fig. 5B), the width h' is larger and the fitting grooves 22 are formed, and the interval W' between the fitting grooves 22 is as follows.
It is smaller than the width W of the gap 14. Similar inclined surfaces 23 and 24 are provided so that the upper and lower side walls cooperate with the inclined surfaces 15 and 16, respectively, with the fitting groove 22 in between. A vertically elongated recess 25 is formed in the fitting groove 22 approximately in the middle in the longitudinal direction. Such a striking plate 21 is shown in FIG. 6C.
As shown in FIG. 2, the fitting groove 22 is loosely fitted into the gap 14 of the holder 8 from the lateral direction. As a result, as shown in the figure, gaps are created between the holder 8 and the striking plate 21, between the front of the side plate 13 and the fitting groove 22, and between the surfaces of the inclined surface 16 and the inclined surface 24. . Reference numeral 26 indicates a stopper piece that engages with the side surface of the rotor body 4 to prevent the striking plate 21 from moving laterally.

Thereafter, as shown in FIG.
A spring pin 28 is installed to prevent the pin 27 from coming out.

As is clear from the drawings, each of the above-mentioned parts is symmetrical with respect to the radial direction passing through the center of the striking plate 21, and the same crushing is performed by both forward and reverse rotation of the rotor.

(3) Problems to be solved by the invention By the way, in the above-mentioned impact type crusher, the striking plate 21 and the holder 8 are engaged with each other by the holder pin 27, and the holder 8 and the rotor main body 4 are engaged with each other by the stopper piece 26. By being engaged, the striking plate 21 is moved in the lateral direction (direction parallel to the axial direction of the rotating shaft 2).
However, since the striking plate 21 is engaged with the holder 8 via the holder pin 27 as described above, there are the following problems.
That is, when it becomes necessary to replace or reverse the worn out striking plate 21, the striking plate 21 is placed in the holder 8.
Remove the engagement with the rotor body 4 and pull it out laterally.
Although it must be removed from the holder pin 27
Dust from the crushed material often adheres to the spring pin 28 that prevents the pin from coming off, and it is not easy to remove the pins 27 and 28 to which dust has adhered. For this reason, it is difficult to work, and therefore,
It took a very long time to remove the striking plate, resulting in poor work efficiency.

Therefore, the technical object of this invention is to enable the striking plate to be easily and quickly pulled out from the holder when the striking plate is removed as described above.

(4) Means for solving the problem In the rotor of the impact type crusher of the above type, an engaging part is provided on the inner edge of the holder, and the engaging part engages with the rotor body when it rotates, and the rotor An engaging portion that can be released from the engagement when the main body is not in operation has been provided on the side wall of the striking plate on the mounting groove side.

(5) Function When the rotor main body rotates, the engaging portion of the holder and the engaging portion of the striking plate engage with each other, so that the striking plate is reliably prevented from coming off from the holder in the direction of the rotor axis. On the other hand, when it is necessary to replace the striking plate when the rotor main body is not operating, the striking plate and the holder are moved inward by striking the protruding end of the striking plate with a hammer, etc. The striking plate can then be easily and quickly pulled out laterally from the holder.

(6) Embodiments A preferred embodiment of this invention will be specifically described with reference to the drawings.

In FIG. 1 A, B, and C, 150 is the holder 1
In the lower inclined surface 116 of No. 08, the inclined engagement recess is formed in the middle part in the longitudinal direction, and the inclination angle of this engagement recess 150 is the same as that of the inclined surface 116.

In FIGS. 2A and 2B, 152 and 153 are the upper and lower inclined surfaces 123 and 124 of the striking plate 121,
With an inclined engagement protrusion formed in the middle in the length direction,
The inclination angles of the engaging protrusions 152 and 153 are also similar to those of the inclined surfaces 123 and 124. and,
The lower engagement protrusion 153 of this striking plate 121 is connected to the engagement recess 1 of the holder 108 when the rotor body 4 rotates.
50 and can be disengaged from the engagement recess 150 of the holder 108 when the rotor main body 4 is not in operation.

In other configurations, parts similar to those of the conventional one are indicated by the same reference numerals plus the number 100, and description thereof will be omitted.

Next, the operation of the embodiment will be explained.

The holder 108 and the striking plate 121 are attached to the rotor body 4.
When the rotor main body 4 starts rotating in the state shown in FIG. 3A, centrifugal force causes the holder 1 to
08 and the striking plate 121 move outward as shown in FIGS. 3B and 3C. That is, at this time, the lower inclined surface 124 of the striking plate 121 engages with the lower inclined surface 116 of the holder 108, and the engaging protrusion 153 of the striking plate 121 fits into the engaging recess 150 of the holder 108 for engagement. and push the holder 108 outward.
As a result, the inclined surface 109 on the back surface of the side plate 113 of the holder 108 slides on the inclined surface 7 of the mouth edge 6, moving the holder 108 outward and inward toward the striking plate 121. The front side of the side plate 113 is pressed against the surface of the fitting groove 122 of the striking plate 121, and the wedge action accompanying the outward movement of the striking plate 121 causes the holder 108 and the striking plate 121 to be firmly attached to the rotor body. It will be fixed at 4.

In this case, since the centrifugal force generated on the striking plate 121 is quite large, its wedge action is extremely effective and firmly fixes the striking plate 121 to the rotor body 4 via the holder 108.

Next, the work of removing the striking plate 121 from the rotor body 4 when replacing it, reversing it, etc. will be described. Once the fixed state as described above is established, it remains in that state even when not working.
To remove this, when the protruding end of the striking plate 121 in the state shown in FIG. 3B is struck with a hammer or the like, the striking plate 121 and the holder 108 move inward to the state before work shown in FIG. 3A. Return to That is, in this state, the upper engaging protrusion 1 of the striking plate 121
52 comes into contact with the upper inclined surface 115 of the holder 108, while the lower inclined surface 124 of the striking plate 121 is released from engagement with the lower inclined surface 116 of the holder 108, and the lower engaging protrusion 153 of the striking plate 121 Since the holder 108 is disengaged from the engagement recess 150, the striking plate 121 can be easily removed from the rotor body 4 by pulling out the striking plate 121 laterally.

In the above embodiment, the engagement protrusion 1 is provided on the striking plate 121.
53, an engagement recess 150 is provided in the holder 108, but conversely, an engagement recess may be provided in the striking plate and an engagement recess in the holder, and the shape thereof is also limited to that shown in the figure. Needless to say, the design may be changed as appropriate.

Also in this embodiment, like the conventional one shown in FIG. 8, a plurality of protrusions are fitted in series in the axial direction of the rotor body 4. It may be provided on all of the plates, or it may be provided only on the striking plates at both ends and omitted from the intermediate striking plate.

(7) Effects of the invention Since this invention is constructed as described above, when the rotor body rotates, the engaging part of the striking plate and the engaging part of the holder engage, causing the striking plate to fall off from the holder. Not only can this prevent danger, but when the striking plate is worn out and needs to be replaced or reversed, the engaging part of the striking plate can be released from the engaging part of the holder, and the striking plate can be moved sideways from the holder. It can be removed from the rotor body by simply and quickly pulling it out in the direction, and there is no need for the troublesome work of removing holder pins, etc. as in the past, so the removal work can be done in a short time, and work efficiency is extremely high. improves. Furthermore, the structure is simple and can be manufactured by simple modification of the conventional striking plate and holder, making it economical. In addition, with the conventional pin method, the striking plate may fall off due to pin breakage. However, with this engagement method, there is no such danger at all, and it has the remarkable effect of being significantly superior in terms of safety.

[Brief explanation of the drawing]

FIG. 1 shows a holder of an embodiment of this invention,
A and B are side views corresponding to A and B in Fig. 5, C is a sectional view taken along the line I _C - I _C of D, Fig. 2 shows the same striking plate as above, A is a side view, and B is a side view. The front view and FIG. 3 show the mounting state of the same striking plate as above, A is an explanatory view corresponding to FIG. Enlarged cross-sectional view,
Figure 4 is a partially longitudinal front view of a crusher equipped with a rotor according to the conventional example, and Figures 5A and B are side views of the same holder as shown in Figure 6B, along lines V _A - V _A and V _B - V _B. Figure, 6th
Figures A, B, C, and D are enlarged partial longitudinal cross-sectional views of section X in Figure 1, showing the order in which the striking plates are attached to the rotor body as above; Figure 7 is a perspective view of the striking plate as above; The figure is a cross-sectional plan view taken along the - line in FIG. 6D, same as above. 2... Rotating shaft, 4... Rotor main body, 5... Mounting groove, 6... Mouth edge, 7... Inclined surface, 108... Holder, 115, 116... Inclined surface, 121... Blow plate, 122... Fitting groove, 123, 124... Inclined surface, 150... Engaging recess, 152, 153...
Engagement protrusion.

Claims (1)

[Scope of utility model registration request] A plurality of mounting grooves for mounting a striking plate are provided radially on the peripheral edge of a plurality of plate-shaped rotor bodies that are attached to a main shaft that can be rotated in either forward or reverse directions. A protruding mouth edge is formed, the mouth edge has an inclined surface that widens from the outside toward the inside, and both mouth edges have a back surface comprising an inclined surface that cooperates with the inclined surface; A holder having a front face substantially parallel to the radial direction of the rotor body is mounted so as to be able to slide inward and outward in the radial direction, and is provided between the striking plates in the gap between the front faces of both holders. In the rotor of an impact crusher, the fitting groove is loosely fitted, and both side walls sandwiching the fitting groove are capable of engaging with the inner and outer edges of the holder, respectively. The invention is characterized in that an engaging portion is provided on the side wall of the striking plate on the side of the mounting groove, the engaging portion being engaged with the engaging portion when the rotor body is in rotation, and capable of being released from the engagement when the rotor body is not in operation. The rotor of an impact crusher.