Device and method for detecting inner trapezoidal taper angle of stepped slotted sieve tube
The invention discloses a device and a method for detecting an inner trapezoid taper angle of a step slot sieve tube. The device for detecting the trapezoidal taper angle in the step slot sieve tube is composed of a detection body, a protractor and a measuring tape. The measuring ruler is in a broke...
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Format: | Patent |
Sprache: | chi ; eng |
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Zusammenfassung: | The invention discloses a device and a method for detecting an inner trapezoid taper angle of a step slot sieve tube. The device for detecting the trapezoidal taper angle in the step slot sieve tube is composed of a detection body, a protractor and a measuring tape. The measuring ruler is in a broken line shape, one end is a sheet-shaped magnet, the other end is a sheet-shaped pointer, and the sheet-shaped magnet and the sheet-shaped pointer are connected and fixed into a whole according to an angle obtained by subtracting an inner trapezoid oblique angle beta from 180 degrees. When the sheet-shaped magnet of the measuring ruler is attracted and fixed with the inclined surface at one side of the trapezoidal gap, the protractor moves along the upper surface of the boss, and the circle center O of the protractor coincides with the sheet-shaped pointer at the other end of the measuring ruler, the sheet-shaped pointer displays an included angle theta on the protractor; if the included angle theta is equal to 0 de |
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