JPH0753708Y2 - Rotary impact crusher - Google Patents

Description

[Detailed description of the device]

[0001]

BACKGROUND OF THE INVENTION The present invention refers to, for example, as shown in FIG. 8, when a casting B is cast in a casting mold A and then a portion C of a sprue cut from the casting B is crushed or rock is crushed. As described above, the present invention mainly relates to an improvement of a rotary impact type crusher used for crushing heavy-duty objects.

[0002]

2. Description of the Related Art A rotary impact type crusher of this type includes a rotary impact body which rotates in a fixed direction around a horizontal axis in a case made of steel or the like having an inlet formed in the upper portion thereof, and the rotary impact body. A collision plate that can rotate in a direction orthogonal to the axis of the body is provided, and the object to be crushed thrown into the case is crushed by violently hitting the object to the collision plate by the rotary impacting body. Is configured. Since the crushed object collides violently with the collision plate, the collision plate is likely to be damaged or deformed. Therefore, it is necessary to frequently replace or repair the collision plate. Therefore, it has been demanded that the collision plate can be easily removed and attached.

Regarding this point, Japanese Utility Model Application Laid-Open No. 48-44559 discloses the following configuration. That is, in this publication, a hole is formed on the upper surface of the case so that the collision plate can be inserted and removed, and the upper end of the collision plate is projected upward from the hole.
A downward opening box-shaped collision plate support plate (bracket) that covers the upper end of the collision plate is detachably fixed to the upper surface of the case with bolts, and the support plate (pin) collides with this collision plate support. The upper end of the plate is pivotally attached, and the collision plate support and the collision plate are lifted together to facilitate the attachment and detachment of the collision plate.

In this case, at the upper and lower mid-height portions of the collision plate,
Roller shafts extending parallel to the axis of the rotary impacting body are provided, while roller guide plates for rotatably mounting the roller shafts are provided on both sides of the inner surface of the case along the axial direction of the rotary impacting body. When the collision plate is inserted and removed, the roller shaft is moved while being mounted on the roller guide plate, so that the collision plate can be inserted and removed in an inclined posture without hitting the collision plate. In addition, a suspension rod extending downward toward the roller shaft is slidably provided in the case, and a U-shaped block on which the roller shaft is fitted is attached to the suspension rod toward the rotation center of the collision plate. The suspension rod is provided with a shock absorbing spring so as to buffer the shock when the collision plate is rotated by the crushed object.

[0005]

The size and shape of the crushed object loaded into the case differ depending on the type. Therefore, it is necessary to adjust the distance between the collision plate and the rotary impacting body. is there. However, in the structure of the above publication, since the roller shaft of the collision plate is merely engaged with the U-shaped block fixed to the lower end of the suspension rod, the distance between the collision plate and the rotary impacting body is constant. Only held,
Therefore, there is a problem that it is not possible to set an appropriate crushed state according to the shape and size of the crushed object.

Further, the roller shaft of the collision plate and the U-shaped block of the suspension rod serve as a stopper for controlling the inclination angle of the collision plate, but when the collision plate escapes and rotates due to the collision of the crushed object, The impact at that time acts on the suspension rod via the roller shaft and the U-shaped block, and a large impact on the collision plate directly acts on the roller shaft and the U-shaped block. There was a problem that the durability of the U-shaped block was low. An object of the present invention is to solve the above problems without impairing the ease of attaching and removing the collision plate.

[0007]

[Means for Solving the Problems] In order to achieve this object, the present invention provides: "A rotary impacting body for a crushed object thrown into the case is provided inside a case having an opening for charging the crushed object in the upper portion. Is provided rotatably around a horizontal axis, and a collision plate against which the crushed object hit hard by the rotary striking body hits, the direction perpendicular to the axis of the rotary striking body with its upper end as the center. In a rotary impact type crusher provided so as to rotate in a vertical direction, a long hole is formed in the upper surface of the case so that the collision plate can be inserted and removed in the vertical direction, and the upper end of the collision plate is formed into the long hole. From the upper part of the collision plate, the upper end portion of the collision plate is provided with a pin extending parallel to the axis of the rotary impacting body, at a plurality of portions of the upper surface of the case along the axial direction of the pin, The bracket to which the pin fits can be detached with bolts By setting the pin, the collision plate is allowed to rotate about the pin, and the pin is provided on the upper surface of the case so as to prevent the collision plate from rotating in the direction approaching the rotary impact body. A stopper that comes into contact with the upper end of the collision plate at a position higher than that is provided so as to be movable and adjustable in a direction orthogonal to the axis of the pin, and further, inside the case, a collision rotated by the collision of the crushed object A cushion is provided for the plate ".

[0008]

[Advantage and effect of the invention] With this configuration, it is possible to remove the bracket from the plurality of brackets screwed on the upper surface of the case and lift the collision plate together with the bracket with the crane, or to suspend the collision plate with the crane. By removing the bracket and the pin, the collision plate can be extracted and reattached to the outside of the case very easily. Further, by adjusting the stopper provided on the upper surface of the case, the distance dimension between the collision plate and the rotary impact body can be adjusted. In this case, since the stopper is provided on the upper surface of the case, the stopper can be adjusted extremely easily.

Therefore, according to the present invention, the distance between the collision plate and the rotary impacting body can be adjusted very easily without impairing the ease of removal and attachment of the collision plate. It has an effect that an appropriate crushing state can be set extremely easily according to the size and the like. Further, since the stopper abuts above the collision plate across the pin, when the collision plate escapes and rotates due to the collision of the crushed object, no impact acts on the stopper and the collision plate A large impact force does not act on the stopper because the upper end of the collision plate only hits the stopper when the escape rotation is performed and then the return rotation is performed. Therefore,
It also has the effect of improving the durability of the stopper.

[0010]

Embodiments of the present invention will now be described with reference to the drawings (FIGS. 1 to 7).
It will be explained based on. 1 to 5 show the first embodiment, and in these drawings, reference numeral 1 indicates a case formed of a thick steel plate. At the top of the case 1, there is provided an inlet 2 that extends obliquely downward toward the inside of the case 1. Further, a discharge port 3 is opened on the lower surface of the case 1, and a check plate 4 for preventing return of the crushed object is rotatably and pivotally mounted inside the input port 2. . A vibrator 5 is attached to the lower surface of the charging port 2 for promoting the sliding down of the crushed material.

Inside the case 1, there is disposed a rotary impacting body 6 for hitting the crushed object thrown into the case 1 through the charging port 2. This rotary impacting body 6 has a structure in which an appropriate number of impacting elements 6b are provided on the outer peripheral surface of a cylindrical body 6a along the circumferential direction, and is attached to the case 1 so as to freely rotate around a horizontal axis. ing. Collision plate 7 in which a crushed object struck by the rotary impacting body 6 collides with a portion above the rotary impacting body 6 in the case 1.
Are arranged so as to incline forward toward the rotary impacting body 6. The upper plate 1a of the case 1 is provided with a long hole 8 through which the collision plate 7 can be vertically inserted and removed.

A pair of support brackets 9 straddling the elongated hole 8 of the collision plate are detachably fixed to the upper surface of the case 1 with bolts 10. Each of the support brackets 9,
Connecting plates 9b are welded to both ends of a pair of left and right side plates 9a extending in parallel, and the connecting plates 9b are fixed to the upper plate 1a of the case 1 by the bolts 10.

On the other hand, an upper projecting portion 7a is formed on the upper end of the collision plate 7, and a suspending support portion 7b fitted in a gap between the side plates 9a of the bracket 9 is fixedly formed on the upper projecting portion 7a by welding. The suspension supporting portion 7b is pivotally attached to the side plates 9a of the left and right brackets 9 by a pin 11 extending parallel to the rotation axis of the rotary impacting body 6. And
The horizontal bars 12 are fixed to the left and right suspension supports 7b of the collision plate 7 by welding or bolting, while the upper plate 1a of the case 1 is located on the opposite side of the slot 2 with the elongated hole 8 interposed therebetween. In addition, a support base 13 having an appropriate height is fixed by welding or the like, and a stopper 14 that abuts the lateral bar 12 is attached on the support base 13 so that the collision plate 7 approaches the rotary impact body 6. It prevents it from rotating.

The stopper 14 includes an adjuster bolt 14a, an elastic body 14b for cushion, and an elastic body 14b.
Equipped with a nut 14c for adjusting the hardness of
When the protrusion size of the adjuster bolt 14a is adjusted, the inclination angle of the collision plate 7 is changed, and the distance between the collision plate 7 and the rotary impact body 6 is adjusted. A first shock absorber 15 of a hydraulic type or a spring type is provided at a portion of the support base 13 behind the stopper 14 so as to project into the case 1 as an example of a buffer body. The collision plate 7
When the crushed object escapes and rotates due to collision, the collision plate 7 collides with the first shock absorber 15 and the maximum rotation angle of the collision plate 7 is primarily regulated.

Further, second shock absorbers 16 projecting inside the case 1 are provided as an example of a buffer body on the left and right sides of the support base 13 with the first shock absorber 15 interposed therebetween. Second shock absorber 16
Is provided with an elastic contact member 16a made of rubber. Before the abutment body 15a of the first shock absorber 15 is completely retracted, the collision plate 7 abuts on the elastic abutment body 16a of the second shock absorber 16, and the first shock absorber 15 is overloaded. Is prevented.

A protective liner 17 is fixed to each inner surface of the case 1. Further, as shown in FIG. 1, the gap distance L1 between the inner surface 1b of the case 1 near the discharge port 3 and the rotary impacting body 6 is formed to have a size considerably larger than a size through which the largest object to be crushed can pass. Further, the gap L2 between the inner surface 1c of the inner surface of the case 1 near the inlet 12 and the rotary impacting body 6 is formed to a size that allows the uncrushed object to be crushed to pass, and the collision plate 7 The object to be crushed, which is rotated by the rotary impacting body 6 without contacting or only slightly contacting, is the rotary impacting body 6 and the inner surface 1 near the charging port.
It is wound up upward without being clogged in the gap with c and can be moved toward the collision plate 7 again.

In the above structure, when the rotary impacting body 6 is rotationally driven by the motor (not shown) in the direction of the arrow D shown in FIG. The body 6 is forcibly moved in the circumferential direction to collide with the collision plate 7, and is crushed by the impact at that time, and the crushed object is discharged downward from the discharge port 3. When the collision plate 7 is replaced or maintained, the bolts 10 for both brackets 9 are removed so that both brackets 9 are still attached to the collision plate 7 as shown by the alternate long and short dash line in FIG. Since the collision plate 7 can be lifted by a crane or the like and removed from the long hole 8 with the collision plate 9 removed from the collision plate 7, replacement and maintenance of the collision plate 7 can be easily performed.

When the collision plate 7 escapes and rotates due to the collision of the crushed object, the lateral bar 12 of the collision plate 7 is rotated.
However, the stopper 14 and other members are not twisted due to the escape rotation of the collision plate 7, and therefore the durability of the members can be improved. As in the example, when the inner surface 1c of the inner surface of the case 1 near the charging port 3 was inclined so as to tilt toward the rotary impacting body 6, the crushed object was wound up again without being crushed. In this case, it is presumed that the crushed object is likely to come into contact with the inner surface 1c and the posture thereof is easily changed. However, as compared with the case where the inner surface 1c is formed vertically, it is rolled up without being crushed. The ratio of the crushed object to be violently collided with the collision plate 7 was improved, and the crushed object could be crushed efficiently.

In the above embodiment, the protective liner 17 is used.
6 was directly fixed to the inner surface of the case 1, but as shown in FIG. 6, a cushioning plate 18 such as rubber was inserted between the inner surface of the case 1 and the protective liner 17, and the spring 1
9 may be fixed by the bolts 20 fitted therein. By doing so, the impact when the object to be crushed collides with the protective liner 17 can be alleviated.
There is an advantage that the durability can be improved.

In FIG. 7, a support bracket 21 having the same stopper 14 as that described above is mounted on a support base 13 of the case 1, and a pin 11 is provided through an appropriate guide means 22.
This support bracket 2 is attached to the
1 is screwed to the piston rod 23a of the hydraulic cylinder 23 mounted on the support table 13, and the hydraulic pressure supplied to the hydraulic cylinder 23 is operated to move the support bracket 21 toward and away from the pin 11 to cause a collision. The distance between the plate 7 and the rotary impacting body 6 can be adjusted. With this structure, the posture of the collision plate 7 can be adjusted more easily when the size of the crushed object is different. It can be carried out.

In this case, the hydraulic cylinder 23 is provided with cushion means so that the piston rod 23 of the hydraulic cylinder 23 is
You may make it contact a directly with the collision plate 7 or the horizontal bar 12. In the case where the crushable object is the above-mentioned casting, a rugged crushable object, such as the part of the riser for preventing the formation of cavities in the casting, is not crushed, and is not crushed, and is It is discharged to the discharge port 3 through the gap between it and the collision plate 7.

[Brief description of drawings]

FIG. 1 is a vertical sectional side view of a crusher.

FIG. 2 is an exploded perspective view of a main part.

FIG. 3 is a plan view taken along line III-III of FIG.

4 is a sectional view taken along line IV-IV of FIG. 3 and is an enlarged view of a main part of FIG. 1.

5 is a cross-sectional view taken along line VV of FIG.

FIG. 6 is a diagram showing another example of how the protective liner is attached.

FIG. 7 is another example of a stopper for the collision plate.

FIG. 8 is a diagram showing an example of a crushed object.

[Explanation of symbols]

 1 Case 1a Upper surface plate of case 2 Input port 3 Discharge port 6 Rotational impacting body 7 Collision plate 8 Long hole 9 Bracket 11 Pin 14 Stopper 15 First shock absorber 16 Second shock absorber

Claims (1)

[Scope of utility model registration request] 1. A rotary impacting body for a crushed object thrown into the case is rotatably provided around a horizontal axis inside a case having an opening for charging the crushed object at an upper portion thereof. The impact of hitting a crushed object with a rotary impacting body
The projecting plate is centered around the upper end of the projecting plate, and the axis line of the rotary impacting body
Rotational striking type installed so as to rotate in a direction orthogonal to
In the crusher , insert and remove the collision plate vertically on the upper surface of the case.
A free long hole is formed, and the upper end of the collision plate is connected to the long hole.
From above to the upper part of the case, at the upper end of the collision plate,
A pin extending parallel to the axis of the rotary impacting body is provided,
Of the top surface of the pin along the axial direction of the pin
In addition, the bracket to which the pin fits can be freely attached and removed with bolts
By fixing to the
It is allowed to rotate, and the collision plate approaches the rotary impact body on the upper surface of the case.
Above the pin to prevent it from rotating in the direction
The stopper that abuts the upper end of the collision plate at
It is provided so as to be movable and adjustable in a direction orthogonal to the axis of the pin, and is further rotated inside the case by the collision of the crushed object.
A rotary percussion crusher characterized in that a shock absorber for the collision plate is provided .