JP2003251211A - Biaxial crusher - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a biaxial crusher having advantages in maintenance, etc., by making the attachment and detachment of each rotary shaft easier. <P>SOLUTION: The case boy 3 of the biaxial crusher 1 is configured so as to be freely divided into a divisional case part 10 constituting the upper part of an end side in an axial direction and a main body case part 11 constituting the lower part of the entire central side in the axial direction and an end side in the axial direction. The upper side of the insertion hole 8 is formed in each divisional case part 10, and the lower side of the insertion hole 8 is formed in the main body case part 11. Thereby, each lightweight and small divisional case part 10 is separated from the main body case part 11 to allow the attachment and detachment of each rotary shaft 5. <P>COPYRIGHT: (C)2003,JPO

Description

Description: BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a case in which two rotating shafts having a plurality of crushing blades are rotated in opposite directions to each other so that a material to be crushed is involved. The present invention relates to a twin-screw crusher for crushing an object to be crushed. 2. Description of the Related Art Conventionally, as a twin-screw crusher of this type, for example, one described in Japanese Patent Application Laid-Open No. 9-38515 is known. The two-shaft crusher has a substantially rectangular parallelepiped case body in which a receiving opening for a crushed object is formed above and an outlet for discharging the crushed object is formed below. This case body has a pair of shaft supporting side walls that support two rotating shafts arranged in parallel and face each other, and a pair of axial direction side walls that extend in the axial direction of each rotating shaft and face each other. . Each shaft support side wall is formed with an insertion hole through which each rotary shaft is inserted, and each rotary shaft is supported by each shaft support side wall via a bearing such as a bearing. A plurality of crushing blades are provided on each rotating shaft at intervals in the axial direction so as to be arranged between the crushing blades of the other rotating shaft. In this two-shaft crusher, the rotating shafts are rotated in opposite directions so that the crushed material is involved, the crushed material received in the case from the receiving opening is crushed, and the crushed crushed material is discharged from the discharge port. I do. [0003] Here, the case body is configured to be splittable into an upper case part and a lower case part. Each insertion hole is located at the boundary between the upper case section and the lower case section, and the upper case section is detached from the lower case section, thereby opening the upper part of each rotating shaft, and allowing each rotating shaft to be attached and detached. State.
That is, with the upper case part detached, each rotating shaft is removed from the case, and maintenance of each part of the crusher is performed. [0004] However, in the two-shaft crusher, since the upper case portion forms the entire upper side of the case body, the weight and volume of the upper case portion increase, and the upper case portion increases. The attachment / detachment work of the case is extremely troublesome. That is, since the attachment and detachment of each rotating shaft is troublesome, it is extremely disadvantageous for maintenance of each part of the crusher. The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a two-shaft crusher which can easily attach and detach each rotating shaft and is advantageous for maintenance and the like. Is to do. In order to achieve the above object, according to the present invention, a receiving opening for a crushed object is formed at an upper part, and a discharge port for the crushed object at a lower part is formed. A case body having a pair of shaft support side walls that axially supports two rotating shafts arranged in parallel at an axial end side,
An insertion hole is formed in each of the shaft support side walls so as to insert each of the rotating shafts, and a plurality of crushing blades are arranged in each of the rotating shafts so that the crushing blades are arranged between the crushing blades of the other rotating shaft. In the twin-screw crusher provided at an interval, the case body is divided into an upper part on the axial end side and a main body on the entire axial center side and a lower part on the axial end side. And a case portion, wherein each of the divided case portions has an upper side of the insertion hole, and the main body case portion has a lower side of the insertion hole. According to the present invention, at the time of maintenance or the like of the crusher, each of the divided case portions forming the upper side of each of the insertion holes is detached from the case body, the upper side of each of the rotating shafts is opened, and each of the rotating shafts is connected to the body case. Can be removed from the part. At this time, each of the divided case portions forms only the upper portion of the case body on the axial end side and is lightweight and small, so that each of the divided case portions can be easily separated from the main body case portion. Similarly, when attaching each rotating shaft to the case body, each divided case portion can be easily and easily engaged with the main body case portion. Accordingly, each rotary shaft can be easily attached and detached, and the convenience in maintenance of the crusher and the like is remarkably improved. 1 to 5 show an embodiment of the present invention. FIG. 1 is a schematic front view of a twin-screw crusher, and FIG. 2 is a schematic of a twin-screw crusher. Side view, FIG. 3 is a schematic front view of the case body showing a state where the divided case part is detached from the main body case part, FIG. 4 is a schematic side view of the case body, and FIG. 5 is detached each divided case part from the main body case part. It is a schematic side view of the case body which shows a state. As shown in FIGS. 1 and 2, the twin-screw crusher 1 includes a hopper 2 into which a material to be crushed is charged, and a case body arranged below the hopper 2 to receive the crushed material. 3 is provided. The case body 3 has a substantially rectangular parallelepiped shape, and has a receiving opening 3a for the crushed object formed above and an outlet 3b for the crushed object to be formed below. The crushed material received by the case body 3 through the receiving opening 3a is crushed in the case body 3 and discharged to the crushed material receiving chamber 4 through the discharge port 3b. As shown in FIG. 1 and FIG.
Is a pair of shaft supporting side walls 6 that support two rotating shafts 5 arranged in parallel at the axial end side and face each other, and a pair of axial directions that extend in the axial direction of each rotating shaft 5 and face each other. Side wall 7
And As shown in FIG. 3, an insertion hole 8 through which each rotation shaft 5 is inserted is formed in each shaft support side wall 6. As shown in FIG. 2, each rotating shaft 5 is configured to rotate by driving a motor 5a. Also, each rotating shaft 5 has
A plurality of crushing blades 9 are provided at intervals in the axial direction so as to be arranged between the crushing blades 9 of the other rotating shaft 5. Here, each crushing blade 9 is a conventionally known one in which claw-shaped blade portions are radially arranged at a predetermined pitch. That is, according to the two-shaft crusher 1,
The objects to be crushed introduced into the hopper 2 are received by the case body 3 and the rotating shafts 5 rotate in opposite directions so as to entrain the objects to be crushed. The crushed material is crushed by the crushing blade 9 and the crushed material is discharged to the crushed material receiving chamber 4. As shown in FIG. 3 and FIG.
Is configured to be splittable into a divided case portion 10 forming an upper portion on the axial end side and a main body case portion 11 forming an entire lower portion on the axially central side and the axial end portion side. More specifically, each of the divided case portions 10 has an upper portion of the shaft supporting side wall 6 and an upper end portion of each of the axial side walls 7 in the axial direction, and has a substantially rectangular parallelepiped shape. The main body case portion 11 forms a lower portion of each shaft supporting side wall 6, a lower portion of each axial direction side wall 7, and a central portion of an upper portion of each axial direction side wall 7 in the axial direction.
As shown in FIG. 3, each insertion hole 8
Is formed, and the lower side of each insertion hole 8 is formed in the main body case portion 11. Each of the divided case parts 10 and the main body case part 11 are fastened by fastening means such as bolts. In the two-shaft crusher 1 constructed as described above, at the time of maintenance of the crusher 1, etc., as shown in FIGS. The split case portion 10 is detached, the upper side of each rotary shaft 5 is opened, and each rotary shaft 5 can be removed from the main body case portion 11. Here, in the present embodiment, since the hopper portion 2 is located above the case body 3, the upper portion of each divided case portion 10 is opened by moving the hopper portion 2 in a horizontal direction or the like. The part 10 is detached. The movement of the hopper 2 is performed as needed. At this time, each of the divided case portions 10 forms only the upper portion of the case body 3 on the axial end side, and is lightweight and small.
Can be removed from Similarly, when each of the rotating shafts 5 is attached to the main body case portion 11, each of the divided case portions 10 can be easily and easily engaged with the main body case portion 11. To remove the rotating shaft 5 from the case body 3, the rope is connected to the rotating shaft 5 through the receiving opening 3a of the case body 3, the rotating shaft 5 is lifted by a crane, and moved to one end side in a horizontal state. Utilizing the upper part of the side end of the case body 3 opened except for the part 10, one end of the rotating shaft 5 is pulled up and inclined. As described above, the twin-shaft crusher 1 of the present embodiment
According to this, since each divided case portion 10 is lightweight and small, each rotary shaft 5 can be easily attached and detached, and the convenience in maintenance of the crusher 1 and the like is remarkably improved. Further, since each of the divided case portions 10 is small, it is advantageous in handling when detached from the main body case portion 11 or the like. That is, for example, as in the case where the split case portion forms the upper half of the case, the weight and volume of the split case portion are increased and the work of attaching and detaching each rotating shaft is not troublesome, and when the split case portion is detached from the main body case portion. In addition, a large space is not required as a place for placing each divided case portion. In the above embodiment, each of the divided case portions 10 is formed in a substantially rectangular parallelepiped shape. However, the shape and the like of each of the divided case portions 10 are arbitrary, and other specific detailed structures and the like are provided. Can of course be changed as appropriate. According to the two-shaft crusher of the present invention, each divided case portion is formed only of the upper portion of the case body on the axial end side, is lightweight and small, and can be easily and easily formed. Since the part can be detached from the main body case part, each rotating shaft can be easily attached and detached, which is extremely advantageous for maintenance of the crusher.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a schematic front view of a twin-screw crusher showing one embodiment of the present invention. FIG. 2 is a schematic side view of a twin-screw crusher. FIG. 3 is a schematic front view of a case showing a state in which a split case portion is detached from a main body case portion. FIG. 4 is a schematic side view of a case. FIG. 5 is a schematic side view of the case showing a state in which each divided case portion is detached from the main body case portion. [Description of Signs] 1 Biaxial crusher 3 Case body 3a Reception opening 3b Discharge port 5 Rotating shaft 6 Shaft support side wall 7 Axial side wall 8 Insertion hole 9 Crush blade 10 Split case section 11 Main body case section

   ────────────────────────────────────────────────── ─── Continuation of front page    (72) Inventor Hiroshi Fujioka             Fuji, 1-7-2 Nishi Shinjuku, Shinjuku-ku, Tokyo             Heavy Industry Co., Ltd. F term (reference) 4D065 CA12 CB02 CC01 CC08 DD25

Claims (1)

Claims: 1. A receiving opening for an object to be crushed is formed at an upper part, and an outlet for a crushed object to be crushed is formed at a lower part. A case body having a pair of shaft supporting side walls that are axially supported on the axial end side, wherein an insertion hole is formed in each of the shaft supporting side walls so as to insert each of the rotating shafts; Are arranged between the crushing blades of the other rotating shaft, the two-shaft crusher provided at intervals in the axial direction, the case body, the upper end of the axial end portion side Forming a split case portion and a main body case portion that forms a lower portion of the entire axial center side and an axial end portion side, and the upper side of the insertion hole is formed in each of the split case portions, and the main body case is formed. A two-shaft crusher, wherein a lower portion of the insertion hole is formed in a portion.