Air gap measurement tool

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Sliding sleeve realizes its movement relative to clearance gauge seat by moving up and down of sliding sleeve operating grip, simultaneously, based on the structure of sliding part, wedge block coordinates realization relative to moving up and down of slide rule groove by sliding sleeve, gear pair and tooth bar, wherein, the effect of gear pair is, is displaced through after gear pair reduces by larger for wedge block amplitude, be passed to dial gauge, to guarantee the accuracy of reading.

The shape of sliding sleeve, except above-mentioned " U " font, also can be set to the shape such as " 7 " font, " recessed " font. In order to ensure the normal use of this measurement of air gap clearance gauge, the moving up and down of sliding sleeve should have certain spacing, therefore, the present embodiment is also respectively arranged with upper limit position block 6 and lower position block 11, for limiting the upper and lower maximum displacement of sliding sleeve in two positions up and down of clearance gauge seat 12 inside.

When measuring, sliding sleeve moves up and down relative to clearance gauge seat, and when reading, sliding sleeve need be fixed, the present embodiment fixes sliding sleeve by lock-screw 4. Lock-screw is by penetrating clearance gauge seat, and then compress sliding sleeve and realize fixing, in another embodiment, lock-screw is connected with the side of sliding sleeve after penetrating clearance gauge seat again, also can realize the fixing of sliding sleeve thus.

In actual measurement operation, although the upper end of tooth bar is moved in sliding sleeve, but when measuring stroke longitudinal direction that is comparatively large and sliding sleeve and being highly lower, the upper end of tooth bar can prop up the base of sliding sleeve unavoidably, to cause the range of measurement of air gap clearance gauge to reduce, therefore, the present embodiment also offers the through hole that can penetrate for tooth bar 5 on the horizontal base of sliding sleeve 3, thus, the length travel amount of tooth bar is just no longer by longitudinal height limitation of sliding sleeve.

According to above-described embodiment, just the present invention can be realized well. What deserves to be explained is; under prerequisite based on above-mentioned design concept; for solving same technical matters; even if some making on architecture basics disclosed in this invention are without substantial change or polishing; the essence of the technical scheme adopted is still the same with the present invention, therefore it also should in protection scope of the present invention.

Described clearance gauge seat 12 lower end is provided with the wedge shape measurement section for inserting clearance measurement depth location;. Be provided with in described clearance gauge seat 12 inside with described wedge shape measurement section with the use of sliding part, described sliding position in described dial gauge 1 gauge rod and survey lower head can moving linearly up and down relative to described clearance gauge seat A kind of hydroelectric generating set rotor measurement of air gap clearance gauge and its application method.

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