JPH0717384Y2 - Mounting structure of striking plate on rotor of impact crusher - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotor of an impact type crusher for crushing rocks and the like, and more particularly to a striking plate mounting structure for a rotor provided with a striking plate mounted on an outer peripheral portion so as to be rotatable in forward and reverse directions. Is.

[0002]

2. Description of the Related Art An impact type crusher equipped with a rotor capable of rotating in the normal and reverse directions is already known as disclosed in Japanese Utility Model Publication No. 2-2431.

As a mounting structure of a striking plate of a rotor in such an impact type crusher, as shown in FIG. 7, a rotor (50) has a mounting plate (5) fixed to a rotor spindle.
4) mounting grooves (55) are provided on the outer peripheral portion of the mounting groove (55) at equal intervals in the circumferential direction, and both mouth end portions (56) of the mounting groove (55) are opposed to each other so as to project inward. A holder (57) for sandwiching the striking plate (51) is attached to (56), and the striking plate (51) is loosely fitted in the gap between the holders (57) and (57), and the striking plate (51) is The concavo-convex portion (61) and the concavo-convex portion (62) provided on both side surfaces of 51) and the opposing surface of the holder (57) are loosely fitted to each other, and the centrifugal force generated by the rotation causes the striking plate (51) to move outward. It is designed to be engaged by movement.

Then, the striking plate (5
When wear occurs in the radially protruding end of 1),
This can be dealt with by reversing the striking plate (51) and replacing both inner and outer ends.

[0005]

However, as shown in FIG. 8, the rotor (50) is provided with the mounting plate (54) at every required interval in the axial direction of the rotor main shaft (52).
It is general that a plurality of striking plates (51) are arranged side by side in the axial direction by the mounting plate (54), but the thickness of both end portions of the striking plate (51) in the rotor radial direction is the middle portion. Since it is larger than the holder (5
With the above-mentioned conventional mounting structure that is clamped from both sides by 7),
The striking plate (51) cannot be pulled out radially outward.

Therefore, when reversing the wear of the projecting end of the striking plate (51) or replacing the striking plate with a new striking plate, all the striking plates (51) arranged in parallel in the axial direction of the rotor are axially moved. It had to be reassembled after it had been taken out, and the work of removing and assembling it was extremely troublesome and required a great deal of labor and time.

Further, in the above-mentioned striking plate (51) mounting structure, although the striking plate (51) is engaged with the holder by centrifugal force, there is always a gap on both the left and right sides, which makes it easy to rattle. Met. In particular, in order to facilitate the assembling of the striking plate (51) in the axial direction of the rotor as described above, the gap between the holder (57) and the striking plate (51) is large, and the striking plate (51) is accordingly large. ) Also increases the amount of movement due to the centrifugal force, and rattling is likely to occur, and when the striking plate (51) is installed for reversal or replacement, check the set state (the distance between the projecting end of the striking plate and the repulsion plate). Etc.) had to be carried out after once rotating the rotor and engaging and fixing the striking plate (51) with the holder (57) by centrifugal force.

According to the present invention, in the rotor of the above-mentioned impact type crusher, the striking plate can be pulled out or incorporated in the outer side in the radial direction of the rotor, so that the striking plate can be easily reversed or replaced and its working time can be reduced. It is intended to provide a striking plate mounting structure in which the striking plate can be fixed stably and reliably while shortening the length.

[0009]

SUMMARY OF THE INVENTION The present invention solves the above-mentioned problems in a rotor of an impact type crusher in which a striking plate is attached to the outer peripheral portion of a mounting plate provided on a rotor spindle and is disposed in a casing. In order to do so, we decided to adopt the following configuration.

That is, the striking plate mounting structure of the present invention is
Two adjacent mounting plates are set as a set, and mounting grooves having mouth ends projecting inwardly facing each other are provided at circumferentially equidistant positions on the outer periphery of each mounting plate. One of the mouth ends has an inclined surface on the opposite surface side of the pair of mounting plates so that the distance between the two becomes larger toward the tip, and the fixed holder is provided at the other mouth end. A taper holder that is mounted and has an inclined surface that cooperates with the inclined surface at the one end of the mouth and that holds a striking plate between the fixed holder and between the pair of mounting plates. The tip of the mouth end on the taper holder side is mounted by being attached in the direction of the rotor axis and by being attached and detached by pressing the detachable pressing and holding member interposed between the taper holders facing each other between the mounting plates. Surface and the opposite surface of the fixed holder Characterized in that the larger the maximum thickness of the striking plate the distance between.

In the above description, it is particularly preferable that the pressing and holding member provided between the two tapered holders is provided with spring means so as to elastically press the both holders at both ends and is provided so as to be expandable and contractible. Is.

[0012]

According to the above-described mounting structure of the present invention, when the striking plate is mounted and set on the outer periphery of the mounting plate, the adjacent two
A set of a plurality of mounting plates is set, and first, a fixed holder is attached to one mouth end (a mouth end that does not have an inclined surface) of a mounting groove included in these mounting plates. Then, from the outside in the radial direction of the rotor, by inserting a striking plate from between the tip surface of the mouth end having an inclined surface and the facing surface of the fixed holder,
The striking plate is pressed into engagement with the facing surface of the fixed holder. At this time, since the gap between the tip end surface of the mouth end and the facing surface of the fixed holder is larger than the maximum thickness of the striking plate, as described above, the striking plate can be easily moved from the outer side in the radial direction of the rotor. Can be fitted.

Next, a taper holder that forms a pair with the fixed holder is attached to the mouth end portion of each of the two mounting plates, which has an inclined surface on the side facing each other, and the pair of mounting plates is provided with a taper holder. The taper holder is fitted in the axial direction of the rotor from the gap between the taper holder and the inclined surface on the back side of the taper holder so as to slide on the inclined surface of the mouth end. In this state, a pressure holding member is provided between the two tapered holders of the two mounting plates facing each other, and both holders are pressed in the axial direction of the rotor to be held in the mounted state. Particularly, when the pressure holding member is provided so as to be expandable / contractible as in claim 2, the pressure holding member is shortened against the spring means so as to be fitted between both taper holders, and the shortening action is performed. Is released, the both ends of the pressing and holding member are brought into contact with the side surfaces of both taper holders and elastically pressed by the spring means.

As a result, both the taper holders are pressed in the axial direction of the rotor and are displaced toward the side of the fixed holder which faces the circumferential direction along the inclined surface, and the striking plate is held between the fixed holders. As a result, the striking plates can be attached to the pair of mounting plates in a stable manner without rattling.

At the time of reversing or replacing the striking plate, contrary to the above-mentioned assembling operation, first the pressure holding member is removed, and then the taper holder is pulled out between the two mounting plates in the axial direction of the rotor and then removed. In this manner, the striking plate may be extracted radially outward from between the tip end surface having the inclined surface and the facing surface of the fixed holder, and the striking plate may be inverted or replaced and mounted and set as described above.

[0016]

Embodiments of the present invention will now be described with reference to the drawings.

1 and 2 show a striking plate mounting structure, FIG. 3 shows a striking plate, and FIGS. 4 and 5 show a striking plate mounting process. FIG. 6 shows the entire structure of the impact type crusher.

In the overall structure of the impact crusher shown in FIG. 6, (1) shows a casing which also serves as a body frame,
(10) shows a rotor installed in the casing (1) so as to be able to rotate in the forward and reverse directions.

An inlet (3) for the material to be crushed is provided at the center of the upper portion of the casing (1), and the material to be crushed from the inlet (3) is used for the rotor (1) in the casing (1).
It can be supplied to the part 0). In the case of the illustrated embodiment, a mountain-shaped chute member (4) is arranged at a position slightly lower than the charging port (3) in the casing (1) with a required space between the chute member (4) and the lower rotor (10). The chute member (4) is provided with the charging chutes (5a) and (5b) between both slopes and the casing side surface, and the dampers (6a) and (6b) at the upper end openings of the charging chutes (5a) and (5b) are formed. ) And the repulsion plates (7a) (7
By the opening and closing action of b), one of the charging chutes (5a) and (5b) is provided so as to be selectively used according to the rotation direction of the rotor (10), whereby the material to be crushed is slanted on the rotor (10). It can be supplied from the upper position. (8) is a first repulsion plate, and (9a) and (9b) are a third repulsion plate.

Therefore, the rotor (10) has the mounting plate (14) on the rotor main shaft (12), which is rotationally driven by a suitable driving means, through the pipe body (13) at an appropriate interval in the axial direction. It is fixed, and two of them are adjacent
A plurality of mounting plates (14) are set as a set, and a plurality of striking plates (11) are mounted on the outer peripheral portion of the mounting plates (14) so as to be juxtaposed in the axial direction.

As shown in FIGS. 1 to 3, the striking plate (11) is in the shape of a rectangular plate, and is formed such that both ends in the radial direction of the rotor are thicker than the central part, and is further slid in the axial direction of the rotor. Since it is not necessary, the thickness of both end portions in the axial direction of the rotor is also large. This striking plate (1
A ridge (15) serving as a means for engaging with a holder described later is provided in the lateral width direction at the center of both side surfaces of 1). The mounting structure of the striking plate (11) will be described below.

The set of two mounting plates (14) (1
On the outer peripheral portion of 4), mounting grooves (16) are provided at equal intervals in the circumferential direction so as to correspond to each other. The mounting grooves (16) have a dovetail groove shape as shown in FIG. The mouth end portions (17a) (17b) in the circumferential direction face each other and project inward. One opening end (17a) of the mounting groove (16) has a pair of mounting plates (14) (14).
On the side of the facing surfaces of the above, there is an inclined surface (18) inclined so that the distance between the two becomes larger toward the tip.

The other mouth end (17b) on the opposite side of the mouth end (17a) has the one mouth end (1
A fixed holder (20) having a recess (19) that engages with the projection (15) of the striking plate (11) is mounted on the surface facing the 7a). The fixed holder (20) may be fixed by welding means or interference fitting means, or may be fixed by a key pin (21) or screw fixing means as shown in the figure.

A taper holder (22), which is opposed to the fixed holder (20) and makes a pair, is attached to the one mouth end (17a). The taper holder (22) has inner and outer plates (23) (24) for covering the inner and outer surfaces of the mouth end (17a) so as not to be displaced in the radial direction of the rotor, and further the inclined surface of the mouth end (17a). It has an inclined surface (25) cooperating with (18) on the back side of the surface (26) facing the fixed holder (20). In addition, the facing surface (26) has a recess (27) that fits and engages with the ridge (15) of the striking plate (11), whereby the striking between the fixing holder (20) and the fixed holder (20). The plate (11) can be clamped in the engaged state.

The taper holder (22) is fitted between the pair of mounting plates (14) (14) in the axial direction of the rotor, and both mounting plates (14) (1).
4) Both taper holders (22) (22) facing each other
The tape holders (22) and (22) are interposed between the press-holding members (28) that can be attached and detached to press the members in the axial direction of the rotor to hold them in the mounted state.

In the case of the illustrated embodiment, a pair of both mounting plates (14) (1) are used as the pressure holding member (28).
4) The spring means (3) is attached to the pipe (29) shorter than the space between them.
0) is installed inside, and pressing pins (31) and (31) are fitted and inserted into both ends of the pipe (29).
1) (31) is provided so as to be expandable / contractible using the spring means (30). Then, the pressing holding member (28) is pressed against both the pressing pins (31) and (31) against the spring means (30) to shorten the length, and the two taper holders (22) (2).
2) by interposing between them, the spring means (30)
Both taper holders (22) and (22) are elastically pressed in the axial direction of the rotor by the elastic force generated by. The tip of the pressing pin (31) is fitted in an engaging hole (32) formed in the side surface of the taper holder (22) and is held in an engaged state.

The tip end surface of the mouth end portion (17a) on the taper holder (22) side and the fixed holder (20).
Of the striking plate (11) is set to be slightly larger than the maximum thickness (W) of the striking plate (11), so that the striking plate (1) can be removed with the taper holder (22) removed.
1) can be inserted in the radial direction of the rotor to be assembled, and then removed.

According to the above-described mounting structure of the present invention, when the striking plate (11) is mounted and set on the outer periphery of the mounting plate (14), two adjacent mounting plates (14) (1)
4) as a set, and first, the fixed holder (20) is attached to one opening end portion (17a) of the mounting groove (16) provided in these mounting plates (14). And rotor (10)
From the outside in the radial direction of the mouth end (1) having an inclined surface (18)
By utilizing the gap (W ') between the tip surface of 7a) and the facing surface of the fixed holder (20), the striking plate (11) having a smaller maximum thickness (W) than this is applied from the outside in the radial direction of the rotor. The ridge (1) which is fitted and is provided on the side surface of the striking plate (11).
The recess (2) having the fixed holder (20) on the opposite surface.
It fits in 7).

Next, the two mounting plates (1
4) A taper holder (20) paired with the fixed holder (20) is attached to the mouth end (17a) having an inclined surface (18) on the opposite surface side of (14). The taper holder (17a) is fitted in the axial direction of the rotor from between the mounting plates (14) (14), and the inclined surface (25) on the back side of the taper holder (17a) is changed to the inclined surface (18) of the mouth end (17a). Slide it into contact. In this state, the pressing and holding member (28) is shortened between the opposing taper holders (22, 22) of the two mounting plates (14, 14) against the spring means (30). The engaging holes (32) having the pressing pins (31) (31) at both ends of the pressing holding member (28) on the side surfaces of both taper holders (22) by inserting the above-mentioned contracting action and releasing the shortening action. The spring means (3
0) to press elastically.

As a result, both taper holders (22)
(22) are pressed against each other in the axial direction of the rotor and are about to be displaced to the side of the fixed holder (20) circumferentially facing along the inclined surface (18), so that the striking plate (11) is fixed to the fixed holder (20). ), So that the striking plate (11) can be stably attached to the set of two mounting plates (14) (14) without rattling.

At the time of reversing or replacing the striking plate (11), contrary to the above-mentioned assembling operation, first, the pressing holding member (28) is removed by being shortened against the spring means (30). , Then taper holder (22)
Both mounting plates (14) in the direction of the rotor axis
(14) Remove and remove in between. Thus, the inclined surface (1
8) The striking plate (11) may be extracted radially outward from between the front end face of the mouth end (17a) having the 8) and the facing surface of the fixed holder (20), whereby the striking plate (11) is inverted. Or it can be easily replaced.

[0032]

As described above, according to the striking plate mounting structure of the present invention, the striking plate can be assembled or removed from the outside in the radial direction of the rotor, and the assembling work at the time of reversing or replacing the striking plate can be performed. It becomes easier and the working time can be shortened, and the striking plate can be fixed and set stably and reliably.

Moreover, the taper holder mounted on one of the mouth ends of the mounting groove is pressed against the striking plate without moving radially along the inclined surface of the mouth end by pressing in the axial direction of the rotor. In addition, since the striking plate can be assembled from the outside in the radial direction as described above, it suffices that the engaging portion of the striking plate and the holder have a gap enough to absorb a manufacturing error. Therefore, the radial movement of the striking plate due to centrifugal force during rotation is small, and therefore, it is possible to mount and set with good stability as described above, and to confirm the set state by just setting in this way, for example, the protruding end of the striking plate. It is possible to confirm the gap between the part and the repulsion plate. .

[Brief description of drawings]

FIG. 1 is a partial cross-sectional view showing a mounting structure of a striking plate to a mounting plate of a rotor.

FIG. 2 is a partial plan view of the above.

FIG. 3 is a perspective view of a striking plate.

FIG. 4 is a partial cross-sectional view showing the mounting process of the striking plate, in which the striking plate is fitted and set on the fixed holder side.

FIG. 5 is a partial plan view before mounting the taper holder.

FIG. 6 is a cross-sectional view showing the overall structure of an impact type crusher.

FIG. 7 is a partial cross-sectional view showing a conventional striking plate mounting structure.

FIG. 8 is a schematic cross-sectional view showing a supported state of a striking plate.

[Explanation of symbols]

 (1) Casing (10) Rotor (11) Strike plate (14) Mounting plate (16) Mounting groove (17a) (17b) Mouth end (18) Inclined surface (20) Fixed holder (22) Tapered holder (25 ) Inclined surface (28) Press holding member (30) Spring means

Claims (2)

[Scope of utility model registration request] 1. In a rotor of an impact type crusher in which a striking plate is attached to an outer peripheral portion of a mounting plate provided on a rotor main shaft and arranged in a casing, two adjacent mounting plates are set as a set, and Mounting grooves having mouth end portions facing each other and projecting inward are provided at circumferentially equidistant positions on the outer peripheral portion of the mounting plate, and one mouth end portion of the mounting groove is mounted by a set of two sheets as described above. The plate has an inclined surface on the opposite surface side so that the distance between the two becomes larger toward the tip, and a fixed holder is attached to the other mouth end, and at the one mouth end, A taper holder that has an inclined surface that cooperates with the inclined surface and that holds a striking plate between the fixed holder is fitted between the pair of mounting plates in the axial direction of the rotor, and both mounting plates are mounted. Both taper wheels facing each other It is mounted so that it can be detached by pressing it with a detachable pressure holding member interposed between the dars, and the distance between the tip end face of the taper holder side and the facing surface of the fixed holder is set to the maximum thickness of the striking plate. A structure for mounting a striking plate in a rotor of an impact type crusher characterized by being made larger. 2. The pressure holding member interposed between both taper holders is provided with spring means so as to elastically press both holders at both ends, and is provided so as to be expandable and contractible.
Attachment structure of a striking plate in the rotor of the impact type crusher described in.