Crusher gap setting by ultrasonic measurement
AssigneeKlockner-Humboldt-Deutz Aktiengesellschaft
InventorsHelmut Stockmann, Willy Jakobs
Life of this patent
Estimating the term…
Abstract
A method for determining the adjustment of a crusher gap setting and/or crusher rate of wear in a gyratory crusher with hydraulic adjustment of the crusher cone height. The invention allows measurement of the gap while the machine is in motion and this data permits automatic adjustment during operation.
Claims19
A method for the determination and adjustment of a width of a crusher gap and rate of wear of a crusher member of a gyratory crusher, particularly a gyratory crusher with hydraulic adjustment of an adjusting cone, comprising the steps of:
- a. a thickness of a stationary crusher sleeve and an adjustment as to height of a crusher cone in reference to a housing are measured in each case by ultrasonic means according to an impulse-echo method and
- b. a width of a crusher gap is determined by means for comparison and display measuring signals generated by said ultrasonic means.
A method for determining a crusher gap width in a gyratory crusher having a gyrating crusher cone, a crusher sleeve surrounding said crusher cone, said crusher gap being formed therebetween at an angle to the crusher cone axis, a housing surrounding an outside of said gyratory crusher, and said crusher cone being height adjustable, wherein the method comprises:
- a. measuring the crusher sleeve thickness with ultrasonics,
- b. measuring a change of axial height of the crusher cone with ultrasonics, and
- c. computing the crusher gap width using known parameters and said measurements from ultrasonics.
A method for determining a crusher gap width in a gyratory crusher having a gyrating crusher cone, a crusher sleeve surrounding said crusher cone, said crusher gap formed therebetween at an angle to the axis with said crusher cone being axially adjustable, the method comprising:
- a. generating a first signal having value directly related to the crusher sleeve thickness,
- b. generating a second signal having value directly related to the axial position of the crusher cone,
- c. converting said axial position signal to a value related directly to the impovement of the cone working face relative to the sleeve,
- d. and comparing said signals to provide an output indicating gap thickness.
In a gyratory crusher having a housing, a gyrating crusher cone adjustably mounted within said housing, and a crusher sleeve attached to said housing and surrounding said crusher cone to form a crusher gap therebetween at an angle to the crusher cone axis, wherein the improvement comprises:
- a. a first ultrasonic means arranged adjacent said crusher sleeve for measuring the thickness thereof;
- b. a second ultrasonic means arranged adjacent said crusher cone for measuring a change of axial height thereof;
- and
- c. computing means connected to said first and second ultrasonic means for computing the crusher gap width using known gyratory crusher parameters and measurement signals from said first and second ultrasonic means.
Dependencies are inferred from the claim text.