JP4592321B2 - Crusher - Google Patents

Description

  In the present invention, two rotating shafts are rotatably supported by bearings at both ends thereof and arranged substantially in parallel in the casing, and a plurality of crushing blades are replaced with each of the two rotating shafts. The object to be crushed is crushed by the crushing blade with the crushing blade, and the processed product after crushing the crushing object supplied into the casing from the inlet as the two rotating shafts rotate in the opposite direction. It is related with the crushing apparatus comprised so that it may discharge | emit out of a casing from a discharge port.

  Such a crushing device is, for example, for crushing waste such as plastic products finely for reuse. In conventional crushing devices, a bearing that supports two rotating shafts is usually one of them. It is attached to the casing in a state where the portion is inserted into the casing (although it is actually implemented, there is no appropriate patent document that mentions this point).

Therefore, in the conventional crushing device, there is a problem that various kinds of filth generated by crushing waste adversely affect the bearings entering the casing. However, there is a problem that it takes a lot of labor and time.
That is, when replacing the crushing blade attached to the rotating shaft in the conventional crushing device, one of the bearings supporting both ends of the rotating shaft is removed from the rotating shaft, and a plurality of crushing blades are removed one by one from the rotating shaft and newly renewed. It was replaced with a new crushing blade.
For this purpose, it was necessary to first disassemble a part of the casing to expose one of the bearings, remove the bearing from the rotating shaft, replace the crushing blade, and then perform an assembly operation of the bearing and the casing. Since the replacement work is sometimes performed at the site, the replacement work becomes very complicated and requires a lot of labor and time. Naturally, the crushing apparatus cannot be used during that time.

  The present invention pays attention to such conventional problems, and the purpose thereof is to suppress the adverse effect of dirt on the bearing and to perform the maintenance of the crushing blade including the replacement operation of the crushing blade in a short time with little effort. It is to provide a crushing device that can.

In the first characteristic configuration of the present invention, two rotating shafts are rotatably supported by bearings at both ends thereof and arranged substantially in parallel in the casing, and a plurality of crushing blades are provided with the two rotating shafts. It is attached to each of the rotating shafts in a replaceable manner, and the object to be crushed supplied into the casing from the input port is crushed by the crushing blade with the rotation in the opposite direction of the two rotating shafts. A crushing apparatus configured to discharge the processed material after crushing out of the casing from a discharge port, wherein each bearing supporting the two rotating shafts is disposed outside the casing, and the 2 opening of the common axis of rotation is moved respectively in the same direction for drawing from the casing together with the crushing blades of the present is provided in the casing in a state that does not interfere with the inlet and outlet, the opening Lid closing is in place which is removably provided on the casing.

According to the first characteristic configuration of the present invention, each bearing that supports the two rotating shafts is disposed outside the casing, so that it is compared with a conventional device in which a part of the bearing enters the casing. Thus, for example, the bearings can be removed from the bearing stand and the casing without disassembling part of the casing without being adversely affected by the dirt in the casing.
An opening for moving the rotating shaft in a substantially parallel direction and withdrawing it from the casing together with the crushing blade is provided in the casing without interfering with the inlet and outlet, and the lid closes the opening. However, if the bearings are removed as described above and the lid is removed from the casing, the rotating shaft can be removed from the casing together with the bearings and the crushing blade. .
Therefore, the set of rotating shafts can be transported to another place, for example, a well-equipped factory, to perform crushing blade replacement work and maintenance, and labor and time can be greatly reduced and restarted in a short time. can do.
In addition, since the opening for extracting the rotation shaft is composed of a common opening for moving the two rotation shafts in the same direction and removing the rotation shaft, each opening dedicated to each rotation shaft is provided separately. Compared to the number of openings, the casing structure can be simplified and the cost can be reduced.

According to a second characteristic configuration of the present invention, the opening has a semicircular end on the opposite wall of the casing on the side where the bearing is located, and extends along each wall to open to the side. The lid includes a detachable wall that constitutes one side wall of the casing, a first lid that closes between the first rotary shaft of the two rotary shafts and the detachable wall, and the first rotation. It is in the place comprised from the 2nd cover body which obstruct | occludes between an axis | shaft and a 2nd rotating shaft .

According to a third characteristic configuration of the present invention, each of the bearings is disposed at a predetermined interval from the outer surface of the casing and is detachably fixed to the bearing base .

  According to the third characteristic configuration of the present invention, since each bearing is arranged at a predetermined interval from the outer surface of the casing, there is a possibility that dirt generated by crushing the object to be crushed enters the bearing. Further, the adverse effect of the dirt on the bearing can be more reliably suppressed.

An embodiment of a crushing device according to the present invention will be described with reference to the drawings.
This crushing device is a device for crushing waste such as plastic products finely for reuse. As shown in FIGS. 1 to 3, two rotations made of first and second metals are used. The shafts 1 and 2 are arranged substantially in parallel in a rectangular box-shaped metal casing 3, and the casing 3 is installed and fixed on the frame 4.
Both ends of the first rotating shaft 1 are rotatably supported by two bearings 5a and 5b, and both ends of the second rotating shaft 2 are also rotatably supported by two bearings 6a and 6b.

A total of four bearing stands 7 are mounted on the frame 4 at a predetermined distance from the outer surface of the casing 3, and each bearing 5 a, 5 b, 6 a, 6 b has a plurality of bolts 8. Are fixed in a removable manner. The bearings 5a, 5b, 6a, 6b are arranged at a predetermined interval T from the outer surface of the casing 3 with the bearings 5a, 5b, 6a, 6b attached to the bearing base 7. Is set.
As shown in FIG. 3, each of the rotary shafts 1 and 2 is formed in a regular hexagonal cross-sectional shape as shown in FIG. 3, and is integrally provided with flanges 1a and 2a on one side. The coupling 9 is connected to each other so that hydraulic motors (not shown) can be connected separately.

The first rotating shaft 1 is fitted with metal first crushing blades 10 and spacers 11 each having a regular hexagonal opening hole, and a nut 12 screwed to the side facing the flange 1a is tightened. Thus, the first crushing blade 10 and the spacer 11 are configured to be pressed and fixed to the flange 1a. That is, the first crushing blade 10 and the spacer 11 are detachably attached to the first rotating shaft 1 by attaching and detaching the nut 12.
Similarly, second crushing blades 13 and spacers 11 are fitted on the second rotating shaft 2 every other piece, and are attached to the second rotating shaft 2 in a replaceable manner by attaching and detaching nuts 12.
In addition, the 1st crushing blade 10 and the 2nd crushing blade 13 are substantially the same, only the direction of attachment is reverse.

The casing 3 is provided with an inlet 14 for feeding an object to be crushed above and an outlet 15 for discharging the processed material after crushing below the casing 3. A double structure comprising a metal liner 17 having wear properties is formed, and a crushing object that is not sufficiently crushed is prevented from being discharged from the discharge port 15 to a predetermined portion of the inner wall of the casing 3. Two types of scrapers 18 of large and small are mounted every other.
The opposing walls of the casing 3, that is, the two walls on the side where the bearings 5a, 5b, 6a, 6b are located, as shown in FIG. An opening 19 that extends along the side and is open to the side is provided so as not to interfere with the insertion port 14 and the discharge port 15. Therefore, one side wall 21 of the rectangular casing 3 is configured as an attachment / detachment wall, and the attachment / detachment wall 21. Is configured to be detachable from the casing 3.

As will be described later, the opening 19 is used for moving the two rotary shafts 1 and 2 in a substantially parallel direction and extracting them from the casing 3 together with the crushing blades 10 and 13. 21 functions as a lid 20 that closes a part of the opening 19.
In addition, as shown in FIG. 4A and FIG. 5, the lid 20 includes a first lid 22 that closes between the first rotary shaft 1 and the detachable wall 21, and the first rotary shaft 1. There is a second lid body 23 that closes between the first rotating shaft 2 and the second rotating shaft 2.
The detachable wall 21 functioning as the lid 20 and the first and second lids 22 and 23 are all composed of the outer plate 16 and the liner 17 as described above, and are attached to the casing 3 by a large number of bolts 24. The scraper 18 is attached to the inside of the detachable wall 21.

And in the location where both the rotating shafts 1 and 2 penetrate the casing 3, as shown in FIG. 2, it corresponds to the outer ring 25 for the seal detachably attached to the casing 3 side and the outer ring 25. Thus, an inner ring 26 attached to each of the rotary shafts 1 and 2 is provided, and a packing 27 is disposed between the rings 25 and 26.
In this manner, since the rotation shafts 1 and 2 and the casing 3 are sealed, the outflow of dirt from the casing 3 is prevented, and the outer surface of the casing 3 and the bearings 5a, 5b, and 6a. , 6b, a predetermined interval T is ensured, and adverse effects due to dirt on the bearings 5a, 5b, 6a, 6b are avoided.

Next, the operation of this crushing apparatus and the procedure for replacing the crushing blades 10 and 13 will be described.
This crushing device is used by connecting a hydraulic motor (not shown) to the coupling 9 of each rotary shaft 1, 2, and each rotary shaft 1, 2 and the crushing blades 10, 13 are driven by the hydraulic motor. As indicated by arrows in the figure, they rotate in directions opposite to each other, that is, in a direction in which the object to be crushed introduced from the inlet 14 is drawn between the crushing blades 10 and 13.
By the rotation of both the crushing blades 10 and 13 in the reverse direction, the crushing object is crushed as desired, and the processed material after crushing is discharged out of the casing 3 from the discharge port 15.

When replacing the crushing blades 10 and 13, first, the outer ring 25 for sealing is removed from the casing 3 side, and further, as shown in FIG. 4B and FIG. 5, the lid 20, that is, the detachable wall 21. The first lid body 22 and the second lid body 23 are removed from the casing 3.
Then, since the opening 19 is in an open state on the side of the detachable wall 21, as shown in FIG. 6, first, the first rotating shaft 1 is moved in a substantially parallel direction, and the crushing blade 10, the bearings 5 a, 5 b, The second rotary shaft 2 is similarly extracted from the casing 3 together with the crushing blade 13, the bearings 6 a and 6 b, and the outer ring 25 together with the outer ring 25. Thereafter, if necessary, the rotary shafts 1 and 2 are transported to a well-equipped factory or the like to replace the crushing blades 10 and 13, and the new rotary shafts 1 and 2 after replacement are replaced with the casing 3. It is assembled to.

    [Another embodiment]

In the previous embodiment, the example in which the bearings 5a, 5b, 6a, and 6b are detachably attached to the bearing base 7 and the interval T is provided between the outer surface of the casing 3 is shown. T is not necessarily required.
Further, when removing the bearings 5a, 5b, 6a, 6b, it is sufficient if it is possible to remove the parts of the casing 3 without disassembling. For example, the bearings 5a, 5b, 6a, 6b are attached to the casing 3. It can also be carried out by detachably attaching to the casing 3.

Partial cutaway plan view of crusher Front view of the crushing device Vertical side view of crusher Partial cutaway side view of crusher Partial cutaway plan view of crusher Partial cutaway plan view of crusher

DESCRIPTION OF SYMBOLS 1, 2 Rotating shaft 3 Casing 5a, 5b, 6a, 6b Bearing 10, 13 Crushing blade 14 Inlet 15 Outlet 19 Opening 20 Lid T Space | interval between casing outer surface and bearing

Claims (3)

Two rotating shafts are rotatably supported by bearings at both ends thereof and are arranged substantially in parallel in the casing. A plurality of crushing blades are attached to the two rotating shafts in a replaceable manner. In addition, the object to be crushed supplied into the casing from the input port is crushed by the crushing blade with the rotation in the opposite direction of the two rotating shafts, and the processed material after the crushing is discharged from the discharge port. A crushing device configured to discharge out of the casing,
Each bearing supporting the two rotating axes, the disposed outside the casing, the shared opening for extracting from said casing is moved together with the crushing blades the two rotating axes to the respective same directions A crushing apparatus in which a cover is provided in the casing without interfering with the charging port and the discharging port, and a lid for closing the opening is detachably provided in the casing. The opening is a side wall of the casing where the bearing is located, one end side is semicircular, and extends along each wall and opens sideways.
The lid includes a detachable wall that constitutes one side wall of the casing, a first lid that closes between the first rotary shaft of the two rotary shafts and the removable wall, and the first rotary shaft. The crushing device according to claim 1, wherein the crushing device is configured with a second lid that closes the space between the second rotation shaft and the second rotation shaft . The crushing device according to claim 1 or 2, wherein each of the bearings is disposed at a predetermined interval from the outer surface of the casing and is detachably fixed to the bearing base .

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