JP2002346410A - Method and apparatus for automatically adjusting crushing gap of impact crusher - Google Patents

Abstract

(57) [Problem] To provide a method for automatically adjusting a crushing gap of an impact crusher, which can be performed without causing damage to a striking plate and / or a collision plate. A striking plate provided on an outer periphery of a horizontal rotor.
Automatically adjusting the crushing gap formed between the tip of the collision plate and the lower end of the collision plate 7 provided so as to be able to approach and separate from the rotor. After stopping the rotor at a position where the tip of the impact plate can contact the lower end of the impact plate, the lower end of the impact plate is brought close to the rotor, and the contact between the lower end of the impact plate and the tip of the impact plate is detected to detect the lower end of the impact plate. Was stopped, and this state was set to a crushing gap value of zero, and the moving distance was measured as a crushing gap value while immediately moving the lower end of the collision plate away from the rotor, and the crushing gap value became a desired value. At this point, the lower end of the collision plate stops moving.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a method and an apparatus for automatically adjusting a crushing gap of an impact crusher, and more particularly, to a tip of a striking plate provided on the outer periphery of a horizontal rotor, and provided so as to be able to approach and separate from the rotor. The present invention relates to a method and an apparatus for automatically adjusting a crushing gap of an impact crusher which automatically adjusts a crushing gap formed between the crushing plate and a lower end of a collision plate.

[0002]

2. Description of the Related Art Conventionally, as a method and an apparatus for automatically adjusting this type of impact crusher, there is known a method and an apparatus for automatically adjusting a crushing gap of a crusher described in Japanese Patent No. 2928327. This method and apparatus, while rotating the rotor provided with the striking plate, approach the lower end of the impact plate to the rotor, detect the sound generated when the lower end of the impact plate and the tip of the striking plate are detected by the microphone, Is detected, the lower end of the collision plate is separated from the rotor, and the gap between the lower end of the collision plate and the tip of the striking plate is adjusted to a desired size.

[0003]

However, in the conventional method and apparatus for automatically adjusting the crushing gap of the impact-type crusher, it is necessary to bring the impact plate into contact with the striking plate of the rotating rotor. As a result, the rotational motion of the rotor interferes with the movement of the collision plate, and there is a problem that the striking plate and / or the collision plate are damaged.

Accordingly, an object of the present invention is to provide a method and an apparatus for automatically adjusting a crushing gap of an impact crusher, which can be performed without causing damage to a striking plate and / or a collision plate.

[0005]

Means for Solving the Problems To solve the above problems, a method for automatically adjusting a crushing gap of an impact crusher according to the present invention comprises:
In a method of automatically adjusting a crushing gap formed between a tip of a striking plate provided on the outer periphery of a horizontal rotor and a lower end of a collision plate provided so as to be able to approach and separate from the rotor, while rotating the rotor idling. After detecting the rotational position and stopping the rotor at a position where the tip of the striking plate can contact the lower end of the impact plate, the lower end of the striking plate approaches the rotor and the lower end of the impact plate and the tip of the striking plate are moved. When the contact is detected, the movement of the lower end of the collision plate is stopped, and this state is set to a crushing gap value of zero. The movement of the lower end of the collision plate is stopped when the value reaches a desired value.

On the other hand, an automatic crushing gap adjusting device of an impact crusher is formed between a tip of a striking plate provided on the outer periphery of a horizontal rotor and a lower end of a collision plate provided so as to be able to approach and separate from the rotor. In a device for automatically adjusting a crushing gap to be performed, a rotation position detector for detecting a rotation position of the rotor, a contact detector for detecting contact between a lower end of the collision plate and a tip of a striking plate, and a lower end of the collision plate A crushing gap value of zero when the tip is in contact with the striking plate, and a gap value measuring device that measures the moving distance of the lower end of the collision plate away from the tip of the striking plate as a crushing gap value, and from the rotational position detector After stopping the idling rotor at a desired rotation position by inputting the rotation position signal of the above, the lower end of the collision plate is brought close to the rotor, and the contact signal from the contact detector is input to thereby input the lower end of the collision plate. Stop moving, and Immediately after the crush gap value is set to zero, the lower end of the impingement plate is separated from the rotor, and a measurement signal from the gap value measuring device is input so that when the crush gap value becomes a desired value, the lower end of the impingement plate is lowered. A control device for controlling the rotation of the rotor and the movement of the lower end of the collision plate so as to stop the movement.

[0007]

In the method and apparatus for automatically adjusting the crushing gap of the impact crusher, the automatic adjustment of the crushing gap is performed while the rotation of the rotor is stopped.

[0008]

Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a schematic configuration diagram showing an example of an embodiment of a crushing gap automatic adjusting device of an impact crusher according to the present invention. In the figure, reference numeral 1 denotes a rotor horizontally laid horizontally in a casing (not shown).
A plurality of regular polygons (regular hexagons in FIG. 1) attached at equal intervals to the rotor shaft 2 (only one is shown in FIG. 1)
And a plurality of (six in FIG. 1) striking plates 4 radially attached to the outer peripheral corners of the rotor plate 3 so as to be able to be turned upside down. Is provided with a rotational position detector (not shown) such as a rotary encoder that detects the rotational angle θ to detect the rotational position of the rotor 1.

The upper end of both sides of the rotor 1 is pinned to the casing via a pin 5 parallel to the rotor shaft 2, and the hydraulic pressure as a collision plate moving device attached to the outside of the casing is mounted on the casing. A collision plate 7 whose lower end is provided to be able to approach and separate from the rotor 1 via a cylinder 6 and whose surface facing the rotor 1 is concavely curved in an arc shape.
(Only the lower part on the right side is shown in FIG. 1) is symmetrically arranged, and a crushing chamber is formed between the rotor 1 and each collision plate 7. A hydraulic oil pipe 9 connecting the hydraulic cylinder 6 and a hydraulic unit 8 for driving the hydraulic cylinder 6 monitors the pressure of the hydraulic oil when driving the hydraulic cylinder 6 so that the lower end of the collision plate 7 approaches the rotor 1. As shown in FIG. 1, the lower end of the impact plate 7 and the tip of the striking plate 4 are brought into contact with each other, so that the lower end of the striking plate 7 and the striking plate 4
A pressure detector 10 as a contact detector for detecting a contact with the tip of the device is interposed. The hydraulic cylinder 6 has a crushing gap value of zero when the lower end of the impact plate 7 and the tip of the striking plate 4 are in contact with each other. A gap value measuring device 11 such as a laser sensor for measuring the protruding length of the piston rod 6a is provided to measure the value as a value.

Reference numeral 12 denotes a control device for controlling the rotation of the rotor 1 and the movement of the lower end of the collision plate 7. The control device 12 receives the rotation position signal RP from the rotation position detector and receives the idle rotation of the rotor 1. At the desired rotational position, that is, the collision plate 7
In order to stop the rotor 1 at a position where the lower end of the blade and the tip of the striking plate 4 can come into contact with each other, a rotation control signal RC is output to the rotation driving device to control the rotation of the rotor 1 and stop the rotation. Thereafter, the hydraulic cylinder 6 is moved forward to move the collision plate 7
And the pressure detector 10
To move the lower end of the collision plate 7, that is, to stop the forward movement of the hydraulic cylinder 6, and
Immediately after the crushing gap value is set to zero, the hydraulic cylinder 6 is moved backward to move the lower end of the collision plate 7 away from the rotor 1 and the measurement signal M from the gap value measuring device 11 is input to reduce the crushing gap value. The movement control signal OC is output to the hydraulic unit 8 to stop the movement of the lower end of the collision plate 7 when the size of the collision plate 7 reaches a desired size, that is, to stop the return operation of the hydraulic cylinder 6, so that the hydraulic cylinder 6 is driven. , The movement of the lower end of the collision plate 7 is controlled.

The automatic adjustment of the crushing gap by the crushing gap automatic adjusting device of the impact type crushing machine having the above-described structure is performed in a state where the supply of the crushed material is stopped and the rotor 1 is idling. When a rotation position signal RP from a rotation position detector for detecting a position is input to the control device 12, a rotation control signal RC is output from the control device 12 to the rotation drive device,
The rotation of the rotor 1 is stopped so that the tip of any striking plate 4 can come into contact with the desired lower end of the collision plate 7. Next, the operation control signal OC is output from the control device 12 to the hydraulic unit 8 so that the hydraulic cylinder 6 is driven so as to move forward, and the lower end of the collision plate 7 is made to approach the rotor 1. Then, when the contact between the lower end of the collision plate 7 and the tip of the striking plate 4 is detected by the pressure detection device 10 and the contact signal T is input to the control device 12, the forward movement of the hydraulic cylinder 6 is stopped, In addition, this state is set to a crushing gap value of zero, and the hydraulic cylinder 6 is immediately moved backward so that the collision plate 7
A signal M from a gap value measuring device 11 for measuring the moving distance as a crushing gap value while the lower end of the hydraulic cylinder 6 is separated from the rotor 1 is inputted. And the movement of the lower end of the collision plate 7 is stopped.

In the above-described embodiment, the contact between the lower end of the collision plate 7 and the tip of the striking plate 4 is detected, and the pressure increase of the hydraulic pressure during the forward movement of the hydraulic cylinder 6 is detected by the pressure detector 10.
However, the present invention is not limited to this, and the rotation of the rotor shaft 2 due to the drag at the time of the contact between the lower end of the collision plate 7 and the tip of the striking plate 4 is determined by the rotation position detector. May be performed by detecting the fluctuation of Further, the movement of the lower end of the collision plate 7 is not limited to the case where the movement is performed by the reciprocating operation of the hydraulic cylinder 6, but may be performed using an electric motor and a screw transmission device. The contact with the front end of the motor 4 may be detected using the rotational position detector as described above, or may be performed by detecting an increase in the current value or the electric power value of the electric motor at the time of the contact.

[0013]

As described above, according to the method and apparatus for automatically adjusting the crushing gap of the impact crusher of the present invention, the automatic adjustment of the crushing gap is performed while the rotation of the rotor is stopped. This can be performed without causing damage to the plate and / or the collision plate, damage to the collision plate moving device, and the like.

[Brief description of the drawings]

FIG. 1 is a schematic configuration diagram showing an example of an embodiment of an automatic crushing gap adjusting device for an impact crusher according to the present invention.

[Explanation of symbols]

 Reference Signs List 1 rotor 4 impact plate 6 hydraulic cylinder (collision plate moving device) 7 collision plate 10 pressure detector (contact detector) 11 gap value measurement device 12 control device RP rotation position signal RC rotation control signal T contact signal M measurement signal OC operation Control signal

 ──────────────────────────────────────────────────の Continuing on the front page (72) Inventor Toshihide Kamase 1780 Kamikono Yachiyo-shi, Chiba Pref.Kawasaki Heavy Industries, Ltd. Yachiyo Plant Co., Ltd. (72) Inventor Junshiro Ohashi 1780 Kamikono, Yachiyo-shi, Chiba F-term (reference) in Kawachishige Yachiyo Engineering Co., Ltd. 4D065 AA06 BB07 BB20 EB01 EB02 EE01 EE12

Claims (2)

[Claims] 1. A method for automatically adjusting a crushing gap formed between a tip of a striking plate provided on an outer periphery of a horizontal rotor and a lower end of a collision plate provided to be able to approach and separate from the rotor. After detecting the rotational position of the rotor while idling, stop the rotor at a position where the tip of the striking plate can contact the lower end of the collision plate, and then move the lower end of the collision plate close to the rotor to strike the lower end of the collision plate. The movement of the lower end of the collision plate is stopped by detecting contact with the tip of the plate, and this state is set to a crushing gap value of zero, and the moving distance is set as the crushing gap value while immediately moving the lower end of the collision plate away from the rotor. A method for automatically adjusting a crushing gap of an impact-type crusher, wherein the movement of a lower end of a collision plate is stopped when a crushing gap value reaches a desired value after measurement. 2. A device for automatically adjusting a crushing gap formed between a tip of a striking plate provided on an outer periphery of a horizontal rotor and a lower end of an impact plate provided so as to be able to approach / separate from the rotor. A rotational position detector for detecting the rotational position of the rotor, a contact detector for detecting contact between the lower end of the collision plate and the tip of the striking plate, and crushing the state in which the lower end of the collision plate and the tip of the striking plate are in contact A gap value measuring device for measuring the moving distance of the lower end of the collision plate away from the tip of the impact plate as a crushing gap value, with a gap value of zero, and a rotation position signal from the rotation position detector being input and idling. After stopping the rotor at the desired rotation position, the lower end of the collision plate is made to approach the rotor, and the contact signal from the contact detector is input to stop the movement of the lower end of the collision plate, and the crush gap value is set to zero. After setting
Immediately move the lower end of the impingement plate away from the rotor, and input the measurement signal from the gap value measuring device to rotate the rotor so that the lower end of the impingement plate stops moving when the crushing gap value reaches a desired value. And a control device for controlling the movement of the lower end of the collision plate.