JPH0642739Y2 - Vertical crusher - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Industrial application] The present invention relates to a vertical crusher such as a pulverized coal machine applied to a coal-fired boiler.

[Conventional technology]

FIG. 3 shows one row of a conventional crusher, and a rotary table 3 which is rotated by a motor 2 at a predetermined rotation speed is arranged in the central portion of the crusher generally indicated by reference numeral 1. A plurality of crushing rollers 4 are provided on the rotary table 3.
Is slidably contacted, and the crushing roller 4 is rotatably supported by a support arm 5. The support arm 5 is fixed to a shaft 6 that is rotatably supported on the crusher side, and one end of a rotating arm 7 is fixed to this shaft. The other end of the rotary arm 7 extends below the rotary table 3 and is rotatably supported by a rod 9 of a pressure cylinder 8 whose lower end is rotatably supported by the base of the crusher. . Then, by operating the pressure cylinder 8, the crushing roller 4 is rotated about the shaft 6 and the rotary table 3 is rotated.
The contact pressure against is adjusted. The object to be crushed is charged from the upper charging port 10 and guided between the crushing roller 4 and the rotary table 3 to be crushed. The hot air introduced from the hot air duct 11 opening to the lower casing 13 causes the crusher upper part. Is introduced into the classifier 12 arranged in.

FIG. 4 shows a plan view of the conventional crusher shown in FIG. In the same figure, the hot air duct 11 has a lower casing 13 between adjacent rollers 4 so as not to interfere with the rotating arm 7.
It is installed below (see FIG. 3).

[Problems to be solved by the device]

In the above-mentioned conventional crusher, the pressure cylinder and the rotating arm are arranged in the lower part of the crusher. Therefore, the width of the hot air duct also installed in the lower part of the crusher is to prevent interference with the arm. Could not be freely widened for. Therefore, in a large crusher or a crusher with a large amount of required hot air, it is necessary to increase the height of the duct to secure an area, and therefore, there is a drawback that the height of the crusher as a whole becomes high. there were.

Further, since the roller cannot be rotated to the outside of the crusher because the roller is largely rotated around the shaft due to the interference between the rotary arm and the lower casing, it takes a lot of time to disassemble and carry out the roller.

The present invention is intended to solve the above-mentioned drawbacks of the conventional vertical crusher.

[Means for Solving the Problems]

The vertical crusher according to the present invention is rotatably supported by a crusher casing and is continuously and outwardly connected to a shaft for rotatably supporting an inner crushing roller so that the crusher is shaken together with the crushing roller. A moving rotating arm and a pressure cylinder supported by a crusher casing above the shaft were provided, and rod connecting portions of the pressure cylinder were provided at both ends of the rotating arm.

[Action]

By connecting the connecting portion at the outer end of the rotating arm connected to the shaft toward the outside and the inside of the crusher casing to the rod of the pressure cylinder and rotating the shaft around the shaft by the pressure cylinder. , The inward crushing roller swings around the shaft to adjust the contact pressure on the rotary table.
In this way, by connecting the rod of the pressure cylinder disposed above the shaft to the end portion of the rotary arm that is continuously provided outside the shaft, the rotary arm and the pressure cylinder are connected to the hot air duct and the hot air duct. Interference with the crusher casing is prevented,
Therefore, the width of the hot air duct can be increased and it can be installed at an arbitrary position, and along with this, the height of the hot air duct becomes lower and the vertical crusher Height becomes low.

Further, by connecting the rod of the pressure cylinder to the connecting portion at the inner end of the rotating arm to operate the pressure cylinder, the crushing roller located inside is moved upward about the shaft.
In addition, it is possible to swing the crusher housing to the outside, so that the crushing roller can be disassembled and discharged in a short time.

Furthermore, when the rod of the pressure cylinder is connected to the inner end of the rotary arm and the crushing roller located inside is swung upward, the rod of the pressure cylinder is connected to the rotary arm from above. Moreover, a tensile load acts on the rod of the pressure cylinder from the crushing roller, and there is no risk of buckling.

〔Example〕

FIG. 1 is a cross-sectional view of a vertical crusher as an embodiment of the present invention, in which a motor 2 is provided at a central portion of the crusher having a classifier 12 at its upper portion and a classifier 12. A rotary table 3 that is rotated at a rotational speed of is arranged. A plurality of crushing rollers 4 are provided on the rotary table 3.
Are in sliding contact with each other, and each of the crushing rollers 4 is rotatably supported by the supporting arm 5. And this support arm 5
Is fixed to a shaft 6 rotatably supported on the crusher side outside the crushing roller 4, and a rotating arm 17 is attached to this shaft.
Is fixed. One end 17a of the rotating arm 17 extends to the outside of the crusher, and the other end 17b extends to the inside of the crusher.The both ends 17a, 17b are provided on the casing 20 of the crusher. The fixed support member (14) is provided with a connecting portion rotatably connected to a rod (16) of a pressure cylinder (15) whose upper end is rotatably supported. A hot air duct 11 opens laterally below the rotary table 3 into the casing 20 of the crusher.

In the present embodiment, during normal operation of the vertical crusher, the rod 16 of the pressure cylinder 15 is connected to the connecting portion of the one end 17a extending to the outside of the rotating arm 17 to operate the pressure cylinder 15. As a result, the crushing roller 4 is rotated about the shaft 6 and the contact pressure on the rotary table 3 is adjusted.

In this embodiment, since the pressure cylinder 15, the rotating arm 16 and the like are installed above the hot air duct 11, they do not interfere with each other. Therefore, the width of the duct can be widened, the height of the crusher can be reduced, and the hot air duct 11 can be installed at an arbitrary position.

FIG. 2 shows a method for disassembling the crushing roller 4 in this embodiment. If the grinding roller 4 becomes worn, the pressure cylinder 15
The other end 1 of the rotating arm 17 extending inward on the opposite side to the one end 17a to which the normal rod 16 of the rotating arm 17 is connected.
By connecting to the connecting portion of 7b and expanding and contracting the pressure cylinder 15, the crushing roller 4 can be greatly swung upward and outward in the range of 90 ° or more around the shaft 6. by this,
It is possible to reduce the time required for disassembling the crushing roller to half or less of the conventional time. Further, since the rod 16 of the pressure cylinder 15 is connected to the other end 17b of the rotating arm 17 extending inward from above, the crushing roller 4 located inward is moved around the shaft 16 as described above. When rocking upward, pressure cylinder 15
Since a tensile load is applied to the rod 16 of, there is no concern about buckling and reliability is enhanced.

[Effect of device]

(1) By connecting the outer one end of the rotating arm to the rod of the pressure cylinder supported by the crusher casing above its axis, the width of the hot air duct can be made wide freely. The height of the hot air duct can be reduced, and the height of the vertical crusher can be reduced.

(2) Since there is no interference between the rotating arm and the crusher casing, by connecting the inner end of the rotating arm to the rod of the pressure cylinder, the roller can be largely rotated around the shaft, It is possible to disassemble and carry out the rollers in a short time.

BRIEF DESCRIPTION OF THE DRAWINGS FIG. 1 is a sectional view of a vertical crusher of a first embodiment of the present invention, FIG. 2 is an explanatory view of the same embodiment when disassembled, and FIG. 3 is a view of a conventional crusher. FIG. 4 is a sectional view of the vertical crusher, and FIG. 4 is a plan view of the conventional vertical crusher. 4 ... Grinding roller, 5 ... Support arm, 6 ... Shaft, 11 ... Hot air duct, 15 ... Pressure cylinder, 16 ... Rod, 17 ... Pivoting arm, 17a, 17b ... End of pivoting arm, 20 ... Crusher casing.

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Hidenori Sakamoto, Inventor 1-1, Atsunoura Town, Nagasaki City, Nagasaki Prefecture Mitsubishi Heavy Industries, Ltd. Nagasaki Shipyard (72) Inventor, Keiki Yamaguchi 1-1, Atsunoura Town, Nagasaki City, Nagasaki Prefecture Mitsubishi Heavy Industry Co., Ltd.Nagasaki Shipyard

Claims (1)

[Scope of utility model registration request] 1. A rotating device that is rotatably supported by a crusher casing and is continuously connected to an inward and outward rotatably supporting shaft of an inward crushing roller so as to oscillate together with the crushing roller. A vertical crusher comprising an arm and a pressure cylinder supported above the shaft by a crusher casing, and connecting parts of rods of the pressure cylinder provided at both ends of the rotating arm.