JPS62282651A - Crusher - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

Detailed Description of the Invention 3. Detailed Description of the Invention (Technical Field) The present invention provides a method of crushing a crushing head disposed in a crushing chamber defined by a main body by moving it relative to the main body. The present invention relates to a crusher that crushes objects to be crushed by a crushing surface of the body and a crushing surface of the main body, and particularly relates to a crusher suitable for crushing stones.

(Prior art) As one type of stone crusher, gyratory crusher,
Like a cone crusher, vertically - ~ Noyama 1
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There is a crusher in which a crusher is supported by a base, a vertically extending shaft is rotatably supported by the eccentric sleeve, and a crushing head is attached to the shaft. This crusher swings the shaft by rotating the eccentric sleeve around its central axis, and the swing of the shaft swings the crushing head relative to the main body, thereby causing the outer surface of the crushing head to However, since this crusher has a structure in which the crushing head is oscillated by rotating the sleeve, the power transmission mechanism from the rotation source to the shaft and The sleeve and shaft support mechanism is complicated and expensive.

In addition, in the conventional crusher, since the center axis of the shaft is inclined with respect to the rotational axis of the sleeve, a bearing with low frictional resistance such as a ball bearing or cola bearing must be placed between the sleeve and the shaft. The rotating contact portion between the sleeve and the shaft is prone to wear, and the power transmission efficiency is low due to the frictional resistance of the rotating contact portion.

Furthermore, in the conventional crusher, the distance between the outer circumferential surface of the maximum diameter of the head and the crushing surface at each position of the crushing surface along the rotation center axis cannot be made constant, and therefore the particles are small and uniform. It is not possible to obtain crushed material with a certain particle size.

Furthermore, since the conventional crusher has a structure in which the shaft does not rotate during crushing, the weight that balances the unbalanced force caused by the swing of the crushing head and the rotation of the eccentric sleeve is spaced downward from the crushing head. It must be arranged around the sleeve, and a crusher with such a structure cannot balance the unbalanced forces.

(Objective of the Invention) The object of the invention is to provide a crusher having a simple structure of a power transmission mechanism to a shaft and a shaft support mechanism.

Another object of the present invention is that a bearing with low frictional resistance can be disposed in the rotating contact portion, thereby reducing wear of the rotating contact portion and increasing power transmission efficiency. Our goal is to provide crushers.

Still another object of the present invention is to provide a crusher that can maintain a constant distance between the outer peripheral surface of the maximum diameter of the head and the crushing surface at each position of the crushing surface along the rotation center axis. be.

Yet another object of the present invention is to provide a crusher capable of balancing unbalanced forces caused by the movement of the crushing head.

(Structure of the Invention) The crusher of the present invention includes a main body that defines a crushing chamber that opens upward, a first shaft portion rotatably supported by the main body around a central axis of the crushing chamber, and a first shaft portion that is rotatably supported on the main body and Extending upward from the first shaft part to the crushing chamber and the center of rotation of the first shaft part @
a rotary shaft comprising a second shaft having a central axis inclined with respect to a line; a means for rotating the rotary shaft; and a rotary shaft disposed in the crushing chamber and rotatably supported on the second shaft. and a crushing head.

In another crusher of the present invention, a recess that opens downward is formed in the crushing head. In the recess, the peg is fixed to the second shaft portion when activated.

(Operations and Effects of the Invention) In the crusher of the present invention, the shaft is rotated relative to the main body. When the shaft is rotated, the second shaft portion is rotated around the rotation center axis in an attitude inclined with respect to the first shaft portion, and performs an eccentric movement such as a so-called swinging movement. As a result, the crushing head swings within the crushing chamber, thereby crushing the object in cooperation with the crushing surface of the main body.

According to the present invention, since the structure is such that the shaft that supports the crushing head is rotated, the structure of the power transmission mechanism to the shaft and the shaft support structure are simple.

According to the present invention 1 Also, since the shaft rotates during crushing,
Bearings with low frictional resistance, such as pole bearings and roller bearings, can be placed between the shaft and the main body that supports it, and between the shaft and the crushing head that is supported on it, thereby creating rotating contact. This is achieved by reducing the wear resistance of the parts and increasing the power transmission efficiency.

By making the height position of the part the same as the height position of the intersection of the center axes of the first and second shaft parts, each position of the crushing surface along the rotation center axis and the outer peripheral surface of the maximum diameter part of the head are The distance between the two can be kept almost constant. If the outer circumferential surface of this maximum outer diameter part is an arc surface centered at the intersection,
Even if the crushing head swings, the distance remains constant. In this way, when the distance between each position of the crushing surface along the center axis of rotation and the outer circumferential surface of the maximum diameter portion of the head becomes approximately constant, it is possible to obtain crushed materials having small and uniform particle diameters.

In addition, in the crusher of the present invention, since the shaft that supports the crushing head rotates during crushing, a weight is attached to the second shaft portion to balance the unbalanced force caused by the movement of the crushing head, and the weight is attached to the second shaft. Rotate along with the rotation of.

Therefore, according to the present invention, the unbalanced force caused by the movement of the crushing head can be balanced by the plow. Further, since the weight is disposed in a recess formed in the crushing head, the weight does not come into contact with the object to be crushed.

(Example) Embodiments of the present invention shown in the drawings will be described below.

The crusher 10 shown in FIGS. 1 and 2 includes a main body 12 supported on a frame, not shown.

The main body 12 includes a cylindrical outer member 14 supported by the frame in a vertically extending position, and a cylindrical inner member 16 coaxially with the outer member and spaced apart from each other inside the outer member 14. The internal space of the outer member 14 is divided into upper and lower chambers, and the vertical center part of the outer member 14 and the inner member 1
and a connecting member 18 that interconnects the upper end portions of 6. The outer member 14, the inner member 16 and the connecting member 18 are
In the illustrated example, they are made in one piece. However, these members may be made separately and connected to each other by a connector such as a bolt or nut.

The stone to be crushed is placed at the upper end of the outer member 14.
A hopper 22 is fixed by a plurality of screws 24 to receive the amount of crushed stone 20 defined by the connecting member 18 and the outer member 18. A cylindrical guide 26 is fixed with a plurality of screws 28.

The crushed stone is placed in a crushing chamber 20 at the periphery of the connecting member 18.
A plurality of six-thirty holes are drilled to allow it to fall from.

The holes 30 are spaced apart from each other along a circle centered on the central axis of the crushing chamber 20. Each hole 30 may be a hole having a circular or square planar shape at multiple locations, or may be an elongated hole extending along the circle.

The inner member 16 supports a rotating shaft 32 that extends vertically through the inner member. The rotating shaft 32 includes a first shaft portion 36 that is rotatably supported on the inner member by a plurality of thrust bearings 34, and a second shaft portion 38 that extends upward within the crushing chamber 20 from the first shaft portion. has. The central axis 40 of the first shaft portion 36 is aligned with the central axis of the crushing chamber 20. On the other hand, secondly, the central axis 4 of the shaft portion 32
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A flange 44 is provided at the boundary between the first shaft portion 36 and the second shaft portion 38 . The lower surface of the flange 44 is the first
The uppermost bearing 34 supports the shaft portion 36 of the uppermost bearing 34 . The second shaft portion 38 is formed with a plurality of upwardly facing step portions.

A crushing head 46 is supported on the second shaft portion 38 by a plurality of thrust bearings 48 so as to be rotatable about a central axis 42 with respect to the second shaft portion 38 . The crushing head 46 includes a crushing part 50 having a vertically penetrating hole, a top part 52 fixed to the upper end of the crushing part with a bolt, and a ring 54 fixed to the inside of the lower part of the crushing part 50 with a bolt. Equipped with.

The top portion 52 has a recess 56 that opens downward together with the crushing portion 50.
It is arranged so as to close the top of the hole of the crushing part 50 in order to define the above-mentioned hole. A reinforcing lip 58 having a planar cross shape is provided on the upper surface of the top portion 52 .

The lower inner circumferential surface of the crushing head 46 comes into contact with a plurality of protrusions 59 formed along the outer circumferential surface of the top end of the inner member 16 .

This prevents dust such as small stones and sand from entering the recess 56. The lower inner circumferential surface is aligned with the center axis 40.4.
It is an arcuate surface with a polarity radius R centered at the intersection P of the two.

In the illustrated example, the maximum outer diameter portion of the crushing head 46 is the lower end outer surface portion T at the same height as the intersection point P.

However, the maximum outer diameter portion may be at another location,
The crushing head 4 may also be an arc surface centered on the intersection point P.
In the illustrated example, the shape of the outer circumferential surface of 6 is semi-hemispherical, but it may be other shapes such as a conical shape.

The recess 56 has an i! 60 is arranged in the rotating section. The weight 60 is attached to the second shaft portion 38 so as to have a center of gravity in a direction opposite to the eccentric direction of the center of gravity of the crushing head 48 in order to balance the unbalanced force generated due to the swinging of the crushing head 48.
is attached by a key.

The crusher 10 also has a drive that rotates the rotating shaft 32! II
In the illustrated example, the drive mechanism 62 including the mechanism 62 includes a rotation source 64 such as an electric motor, a reduction gear 66 that reduces the output of the rotation source, and a drive mechanism 62 fixedly connected to the output shaft of the reduction gear by a key. It includes an attached sprocket 68, a sprocket 70 fixedly attached to the lower end of the first shaft part 36 with a key, and a chain 72 wound around the single sprocket 68 and 70. The sprockets 68, 70 and chain 72 are housed in a case 76 that is attached to the outer member 16, inner member 16, and reducer 66 by a plurality of bolts 74.

The inner member 16 is provided with a store 80 that prevents the crushing head 46 from rotating together with the rotating shaft 32. As shown in FIG. 3, the stopper 80 includes a bin 82 fixed to protrude upward from the upper end of the inner member 16, and a roller 84 rotatably supported on the upper end of the bin.
A roller 84 forms a downward recess 8 in the crushing head 46
It is located at 6. The stopper 8o may not be provided.

The crusher 10 includes stones supplied to a crushing chamber 20 and a crushing head 4.
The weight of 6 is received by the rotating shaft 32 through the bearing 48.
The weight of 2 is further received by the inner member 16 via the bearing 34.

When the crusher 10 is in operation, when the fifth rotating shaft 32 is rotated, the first
And the second shaft portions 36, 38 are rotated about their central axes 40. As a result, the second shaft part 38 is rotated so that the central axis 42 draws a conical shape with an apex angle of 20, since the central axis 42 is eccentric by an angle of 0 with respect to the first shaft part 36. This causes the crushing head 46 to swing like a swinging motion.

At this time, the distance S between the crushing surface 78 and the maximum diameter portion T of the crushing head 46 at each position in the circumferential direction of the crushing surface 78 is
Since the height position of the maximum diameter portion T is the same as the height position of the intersection P, they are almost the same. However, the distance between the crushing surface 78 and other parts of the crushing head 46 at each circumferential position of the crushing surface 78 changes as the crushing head 46 swings. If the distance S is uniform, the stone to be crushed is on the crushing surface 7
Since the stone will not fall into the hole 3o unless it is crushed to a size that can pass between the stone 8 and the maximum diameter part T of the crushing head 46, it is possible to obtain small and uniformly sized stones.

The unbalanced force caused by the rocking of the crushing head 46 is balanced by the weight 60 disposed in the recess of the crushing head 46 being rotated together with the rotating shaft 32.

When the rotating shaft 32 is rotated, the crushing head 46 is prevented from rotating by the striker 80, so the main body 1
It does not rotate compared to 2. If the stopper 80 is not provided,
If the frictional resistance between the crushing head 46 and the second shaft portion 38 is greater than the frictional resistance between the crushing head 46 and the inner member 16, the crushing head 46 will rotate together with the second shaft portion 38. The crushing head 46 and the second
Although the frictional resistance between the second shaft portion 38 and the second shaft portion 38 is smaller than the frictional resistance between the crushing head 46 and the inner member 16, if a load is applied to the crushing head 46, the second shaft portion 38 will be crushed. head 46
The crushing head 46 does not rotate.

If stones are present in the crushing chamber 20 or stones are introduced into the crushing chamber 2o while the rotating shaft 32 is being rotated,
As the crushing head 46 swings, the stone is pressed against the crushing surface 78 by the crushing head 46 and is crushed. The crushed stone falls from the hole 30 and is moved to the crusher 1 by the guide 26.
Guided out of 0.

[Brief explanation of the drawing]

FIG. 1 is a longitudinal sectional view showing an embodiment of the crusher of the present invention, FIG. 2 is a plan view of the crusher shown in FIG. 1, and FIG. 3 is an enlarged sectional view of a stopper portion. lO: crusher, 12 two bodies, 20: crushing chamber,
32: Rotation axis. 36: first shaft portion, 38: second shaft portion, 46: crushing head, 56: recess, 602 balance weight, 62: drive mechanism. Agent Patent Attorney Nobu Matsunaga Written Amendment of Procedure September 9, 1986 Commissioner of the Japan Patent Office Kuro 1) Akio Yu Tono1, Indication of the Case 1986 Patent Application No. 1246902, Name of Invention Crusher Name Name Stock Company: Iseki Kaihatsu Koki 4, Agent Address: Kakutomo Building, 3-4-17 Toranomon, Minato-ku, Tokyo 105 Telephone: (434) 0667 (Main) 5, Weight of amendment order (voluntary) 6, Subject of amendment Column 7 of Detailed Description of the Invention of the Specification, Contents of Amendment (1) "Includes a stopper 80" written on page 12, lines 11-12 of the specification is corrected to "Includes a stopper 80."

Claims (3)

[Claims] (1) A main body that defines a crushing chamber that opens upward, a first shaft that is rotatably supported by the main body around the central axis of the crushing chamber, and a first shaft that defines the crushing chamber from the first shaft. a rotating shaft including a second shaft extending upward and having a central axis inclined with respect to the central axis of rotation of the first shaft; means for rotating the rotating shaft; disposed in the crushing chamber; and a crushing head rotatably supported on the second shaft. (2) The crusher according to claim 1, wherein the maximum outer diameter portion of the crushing head is located at a height of an intersection of central axes of the first and second shaft portions. (3) A main body that defines a crushing chamber that opens upward, a first shaft that is rotatably supported by the main body around the central axis of the crushing chamber, and a first shaft that defines a crushing chamber that opens from the first shaft. a rotating shaft including a second shaft extending upward and having a central axis inclined with respect to the central axis of rotation of the first shaft; means for rotating the rotating shaft; disposed in the crushing chamber; a crushing head having a recess opening downward, the second shaft being rotatably received in the recess, and a crushing head rotatably supported on the second shaft; a weight rotatably disposed within the recess for balancing unbalanced forces;
and a weight fixed to the second shaft portion.