JPH0444329Y2 - - Google Patents

Description

[Detailed description of the invention] [Industrial application field] This invention is a chipper cutter, etc., in which the crushed pieces of the material to be crushed, which are supplied into the crushing chamber from the supply trough, flow back into the supply trough side and fly out. This invention relates to a prevention device for preventing a person from falling.

[Prior Art] To explain the chipper, a chipper/cutter etc. has a crushing chamber 2 formed in a drum shape mounted on a machine frame 1, and the axial center portion of the crushing chamber 2 is mounted on a machine frame 1, as shown in FIG. A main shaft 3, which rotates in conjunction with the output shaft of the prime mover, is horizontally supported, and a crushing mechanism 4 is mounted on the main shaft 3, and is mounted on the front side of the entrance 20 of the crushing chamber 2 (on the right side in the figure). connects the supply gutter 5, and connects the inlet 2 at the upper surface of the floor plate 50 of the supply gutter 5.
A feeding roll 6 that rotates in conduction with the main shaft 3 is mounted on a portion located in front of the crushing chamber 2, and a screen 7 having sieve mesh is mounted on the discharge port 21 side of the crushing chamber 2. A discharge gutter 8 is provided on the outside thereof, and when the material to be crushed M, such as grated branches of fruit trees, is supplied to the supply gutter 5, it is sequentially fed into the crushing chamber 2 by a feed roll 6. , the crushing mechanism 4 rotating in the crushing chamber 2 is cut into crushed pieces by a cutting blade 40 consisting of a large number of free hammers, and the crushed pieces accumulated in the crushing chamber 2 are cut into crushed pieces by the cutting blade 40. ……
Grind finely and pass through screen 7 with mesh size 70.
. . . and is discharged outside the machine through a discharge gutter 8.

[Problem to be solved by the invention] In the chipper A configured as described above, during operation, the crushed pieces that are cut from the object M to be crushed and rotate within the crushing chamber 2 are In some cases, the debris may flow backwards from the inlet 20 to the supply gutter 5 side and fly out, and the flying debris may collide with the worker who is located near the feed gutter 5 and is performing the work of supplying the material to be crushed. This makes work difficult as it increases the risk of accidents. For this reason, the entrance 20 of the crushing chamber 2 is provided with a guide wall 9 that hangs down from its upper edge toward the upper surface of the floor plate 50 of the supply gutter 5 to prevent the crushed pieces flowing inside the entrance 20. Although attempts have been made to guide the flow or install a banner to block the entrance 20 of the crushing chamber 2, there is a problem in that they cannot effectively prevent the debris from flying out.

The present invention was made to solve this problem, and prevents the crushed pieces of the material to be crushed, which are supplied from the supply gutter 5 into the crushing chamber 2, from flowing back into the supply gutter 5 side and flying out. The purpose is to provide new means for effective prevention.

[Means for Solving the Problems] The present invention was completed based on the knowledge obtained through various studies and achievements for the above-mentioned purpose. That is, the phenomenon in which crushed pieces fly out from the entrance 20 of the crushing chamber 2 to the supply gutter 5 side is as follows.
The cutting blade 40 of the crushing mechanism 4 generated in the crushing chamber 2...
The crushed pieces rotating inside the crushing chamber 2 as the
When flowing inside the inlet 20, the feed roll 6
This is caused by colliding with the upper circumferential surface side and the upper surface of the floor plate 50 of the supply gutter 5 and being reflected, and depending on the direction of the reflection, the reflected fragments will fly out toward the supply gutter 5 side. In particular, of the floor plate 50 of the supply gutter 5 and the upper circumferential surface side of the feed roll 6 with which the crushed pieces collide, the upper circumference side of the feed roll 6 is on the return rotation side, Since it rotates from the inside of the inlet 20 to the outside, the blades that are provided in the shape of radially protruding blades on the circumferential surface of the feed roll 6 or the crushed pieces that collide with the blades are removed. It has been found that this is due to the fact that the water is splashed outward from the supply gutter 5. From this, the lower end of the guide wall 9 installed at the entrance 20 of the crushing chamber 2 covers the upper surface side of the feed roll 6, and the rotation trajectory w of the cutting blade 40 of the crushing mechanism 4 is
A bent wall 9a is provided which bends toward the inner surface of the bent wall 9a, and the crushed pieces that rotate in the crushing chamber 2 and flow through the inlet 20 along the inner surface of the guide wall 9 are placed on the inner surface of the bent wall 9a. When the guide part a is provided to guide the pieces inward on the rotation locus w, when the crushed pieces rotating in the crushing chamber 2 rotate to the inner side of the inlet 20, the feed roll 6 It flows toward the center of the crushing chamber 2 without colliding with the upper circumferential surface and the base end of the floor plate 50 of the supply gutter 5, and as a result, the crushed pieces are effectively ejected from the inlet 20. This is due to the fact that we have obtained results that will allow us to prevent this.

Therefore, in the present invention, as a means to achieve the above-mentioned object, the main shaft is horizontally supported in the crushing chamber mounted on the machine frame, and the crushing mechanism is mounted on the main shaft. The base end side of the supply gutter is connected to the entrance of the crushing chamber, and a feed roll is arranged in front of the entrance, facing the upper surface of the base end side of the floor plate of the supply gutter, and is placed horizontally on the machine frame. A guide wall that hangs down from the top plate of the crushing chamber toward the upper surface of the proximal end of the floor plate of the supply gutter is installed in front of the entrance of the frame and in front of the crushing mechanism in the rotational direction. The guide wall is provided approximately along the rotation locus of the cutting blade of the mechanism, and the lower end of the guide wall is formed with a bent wall that covers the upper surface side of the feed roll and bends toward the rotation locus of the cutting blade. A guide portion is formed on the inner surface of the crushing chamber to guide and guide the crushed pieces flowing through the inlet along the inner surface of the guide wall toward the inner side of the rotation trajectory. This invention proposes a device to prevent crushed materials from flying out in chippers, cutters, etc.

[Example] Next, an example of implementation will be described in detail with reference to the drawings. Note that the same reference numerals in the drawings are used for constituent members having the same effect as those of the previous means.

Figure 2 is a longitudinal side view of the chipper A in which the present invention can be implemented, in which 1 is the machine frame, 2 is the crushing chamber, 3 is the main shaft, 4 is the crushing mechanism, 5 is the supply gutter, and 6 is the feed 7 is a screen, 8 is a discharge gutter, 9 is a guide wall, 9a is a bent wall formed at the lower end of the guide wall 9, and a is a guide installed on the inner surface of the bent wall 9a of the guide wall 9. Show part.

The crushing chamber 2 is usually formed into a drum shape and mounted on the machine frame 1. A main shaft 3 is disposed at the center of the shaft so as to pass through it, and a horizontal shaft support is attached to the machine frame 1. It has been done.

In addition, the crushing mechanism 4 has cutter attachment plates 4a, which also serve as flywheels, mounted on the main shaft 3 in parallel in the axial direction, and support shafts 41 are suspended around their peripheral parts, and these support shafts are It is a normal type in which cutting blades 40 made of a large number of free hammers are supported in parallel on 41..., and cutting blades 42... are installed on the periphery of the blade mounting plate 4a.... The cutting blades 40 are driven by transmitting the main shaft 3 to the output shaft of the prime mover, so that the cutting blades 40 rotate clockwise in FIG. By rotating in this posture, it collides with the objects to be crushed M supplied into the crushing chamber 2 from the supply gutter 5 side, and acts to crush them.

The feed roll 6 is arranged at the front part of the inlet 20 so as to face the upper surface of the base end side of the floor plate 50 of the supply gutter 5 connected to the inlet of the crushing chamber 2, and is horizontally mounted on the machine frame 1. It is supported by a shaft and is connected to the aforementioned main shaft 3 through a transmission mechanism, so that when the main shaft 3 is driven, the second
It rotates clockwise in the figure, and acts to sequentially feed the material M to be crushed into the supply gutter 5 into the crushing chamber 2 while pressing it against the upper surface of the floor plate 50 of the feed gutter 5.

The screen 7 is a cutting blade 40 of the crushing mechanism 4...
The crushed pieces crushed from the object M are temporarily accumulated in the crushing chamber 2, and the rotating cutting blade 40...
In order to be able to repeatedly crush the...
This is a sieve screen stretched over the discharge port 21 of the crushing chamber 2, and has sieve meshes 70 for sieving out finely crushed crushed pieces.

In the rotation direction of the crushing mechanism 4, the guide wall 9
The floor plate 5 of the supply gutter 5 is connected from the top plate of the crushing chamber 2 to the floor plate 5 of the supply gutter 5 so as to constitute the peripheral wall of the portion located on the near side of the inlet 20.
0, and the inner surface of the crushing mechanism 4 is installed so that the cutting blade 40 substantially follows the rotation locus of the cutting blade 40 of the crushing mechanism 4, and the lower end of the cutting blade 40 of the crushing mechanism 4 is installed so that the upper side of the feed roll 6 is
It is formed into a bent wall 9a that bends along the upper surface thereof toward the inner side of the rotation locus w of the cutting blade 40, thereby covering the upper surface side of the feed roll 6. The inner surface of this bent wall 9a guides and guides the flow of crushed pieces rotating in the crushing chamber 2 toward the center of the crushing chamber 2 before the inlet 20 in the rotational direction of the cutting blade 40. It is formed in the guide part a.

In addition to the case where the guide wall 9 forming the guide portion a at the lower end is formed in an arc shape along the rotation locus w described above,
As shown in FIG. 3, it may be formed into a straight plate shape.

Further, the bent wall 9a formed on the lower end side of the guide wall 9 to form the guide portion a may be bent so as to have no corners with respect to the guide wall 9, as shown in FIG.

Further, a bent wall 9a formed at the lower end side of the guide wall 9
As shown in FIG. 5, the guide portions a installed on the inner surface side of the guide wall 9 may be installed in multiple series on the inner surface of the guide wall 9 so as to be parallel to each other in the rotating direction of the crushed pieces.

The embodiment device constructed in this manner operates as follows.

The upper peripheral surface side of the feed roll 6 and the floor plate 50 of the supply gutter 5
The upper surface side of the proximal end portion of the guide wall 9 and the bent wall 9a formed at the lower end side of the guide wall 9 are shielded from the flow of crushed pieces rotating inside the crushing chamber 2. That is, the material to be crushed is fed into the supply gutter 5 into the crushing chamber 2 by the feed roll 6, and is crushed by the crushing mechanism 4 rotating within the crushing chamber 2, resulting in crushed pieces. begins to rotate in the crushing chamber 2, the flow of the crushed pieces flows into the crushing chamber 2.
When it flows inside the entrance 20 of
It comes to be guided toward the center of the crushing chamber 2.

Therefore, when the crushed pieces leave the lower end of the guide wall 9 and pass through the inlet 20 section from above to below, the floor plate of the feed roll 6 and the supply gutter 5 is placed above the upper peripheral surface of the feed roll 6. Base end portion 50a of 50
From the upper surface of the crushing chamber 2, the flying object changes direction toward the center of the crushing chamber 2.

From this, the crushed pieces rotating in the crushing chamber 2 collide with the upper peripheral surface side of the feed roll 6 and the upper surface of the base end 50a of the floor plate 50 of the supply gutter 5, and are reflected. It is effectively prevented from flying out of the supply gutter 5 from the inlet 20 by being repelled by the feeding blade on the upper peripheral surface side of the filling roll 6.

[Effects of the invention] As explained above, the chipper and
A device for preventing shredded material from flying out in a cutter or the like is mounted on the machine frame 1 and placed in front of the inlet 20 of the crushing chamber 2 at a location in front of the crushing mechanism 4 in the crushing chamber 2 in the rotating direction. A guide wall 9 that hangs down from the top plate toward the upper surface of the base end side of the floor plate 50 of the supply gutter 5
is provided approximately along the rotation locus w of the cutting blade 40 of the crushing mechanism 4, and the lower end of the guide wall 9 covers the upper peripheral surface side of the feed roll 6, and the cutting blade 40 Bending wall 9 that bends toward the inside of the rotation trajectory w
a, and a crushing chamber 2 is provided on the inner surface side of the bent wall 9a.
Since the structure is equipped with a guide part a that rotates inside and guides the crushed pieces flowing through the inlet 20 toward the inside of the rotation locus w, it is possible to rotate inside the crushing chamber 2. When the crushed pieces flow along the inner surface of the guide wall 9 and pass through the inlet 20 of the crushing chamber 2 from above to below, the flow of the crushed pieces is caused to cover the upper peripheral surface side of the feed roll 6. A bent wall 9a provided on the lower end side of the guide wall 9 so as to bend inward on the rotation locus w of the cutting blade 40 blocks the feed roll 6 above the upper peripheral surface side, and the bent wall 9a The guiding part a on the inner side changes the direction of the cutting blade 40 toward the inside of the rotation trajectory w and guides it in that direction, so that the crushed pieces collide with the upper peripheral surface of the feed roll 6. Then, the feed roll 6 blows it out of the supply gutter 5, and it collides with the upper surface of the base end of the floor plate 50 of the supply gutter 5 and is reflected, so that it flies out of the supply gutter 5. will be properly prevented.

[Brief explanation of the drawing]

Figure 1 is a vertical side view of a conventional chipper, Figure 2 is a vertical side view of a chipper that can implement the present invention, and Figure 3 is a vertical side view of a chipper that can implement the present invention.
The figure is a longitudinal cross-sectional side view of another embodiment of the same main part.
The figure is a longitudinal sectional side view of a different embodiment of the same main part, and FIG. 5 is a longitudinal sectional side view of a further different embodiment of the same main part. Explanation of drawing symbols, A... Chipper, M... Object to be crushed, a... Guide section, w... Rotation locus, 1... Machine frame, 2... Crushing chamber, 20... Entrance, 21... Discharge port, 3...Main shaft, 4...Crushing mechanism, 4a...Cutter mounting plate, 40...Cutting blade, 41...Spindle, 5...
Supply gutter, 50...floorboard, 50a...base end, 6...
...Feed roll, 7...Screen, 70...Sieve mesh, 8...Discharge gutter, 9...Guide wall, 9a...Bending wall.

Claims (1)

[Scope of utility model registration request] A main shaft 3 is horizontally supported in a crushing chamber 2 mounted on a machine frame 1, a crushing mechanism 4 is mounted on the main shaft 3, and the base end side of a supply gutter 5 is connected to an inlet 20 of the crushing chamber 2. In front of the inlet 20, a feed roll 6 is disposed at a portion facing the upper surface of the proximal side of the floor plate 50 of the supply gutter 5 and horizontally supported on the machine frame 1, and the inlet 20 is
0, the supply gutter 5 is connected from the top plate of the crushing chamber 2 to the front side of the crushing mechanism 4 in the rotational direction.
The guide wall 9 hanging down toward the upper surface of the proximal end of the floor plate 50 is rotated by the rotation locus w of the cutting blade 40 of the crushing mechanism 4.
A bent wall 9a is formed at the lower end of the guide wall 9 to cover the upper surface side of the feed roll 6 and bend toward the rotation locus w of the cutting blade 40, A guide portion a is formed on the inner surface of the crushing chamber 2 to guide and guide the crushed pieces flowing through the inlet 20 section along the inner surface of the guide wall 9 toward the inner side of the rotation trajectory w. A device to prevent crushed materials from flying out in chippers, cutters, etc.