Clearance measuring tool for screw assembly of adjustable air bleed valve of aircraft

Abstract

The invention discloses a clearance measuring tool for a screw assembly of an adjustable air bleed valve of an aircraft, which comprises a base (3) and a torsion arm, wherein the left and the right ofthe base (3 ) protrude, the middle parts of the left and right protrusions are provided with coaxial threaded holes, and the coaxial threaded holes are internally provided with left and right lockingbolts (6) respectively; the middle of the base (3) is provided with a front-back transverse hole and a vertical hole which are mutually intersected, the front-back transverse hole is internally provided with a bearing which supports a hexagonal torsion shaft (9); the lower part of the torsion arm is provided with a front-back hexagonal hole so as to be matched with the hexagonal torsion shaft (9), the top is provided with four forks which are symmetrical front and back and left and right and face upwards; the hexagonal torsion shaft (9) penetrates through the front-back hexagonal hole which is inserted into the bottom of the torsion arm from the vertical hole in the base (3) in a mode of preserving a clearance. The tool can accomplish the clearance measurement for various types and sizesof screw assemblies conveniently, realizes effectively centering and clamping, ensures accurate and reliable clearance measurement for the screw assembly and is simple and easy to operate; and the device is solid and durable, can be freely assembled and disassembled, and is simple and convenient to upgraded, modified, repaired and maintained.

Description

technical field [0001] The invention relates to a tool for measuring the gap of a lead screw assembly, in particular to a tool for measuring the gap of a lead screw assembly of an aircraft adjustable deflation valve. Background technique [0002] Aircraft adjustable bleed valve is the core component of anti-surge of aircraft engine. Aircraft engine exhausts air by adjusting the opening of adjustable bleed valve to prevent engine bleed surge. The action of the adjustable bleed valve is controlled by the transmission of the screw assembly, which is the core component of the bleed valve and the key to the engine anti-puffing system. [0003] As a relatively reliable transmission part, the lead screw assembly mainly plays the role of bearing force, force transmission, and converting rotary motion into linear motion. As the most important characteristic index, the fit clearance of the lead screw assembly directly determines the transmission efficiency and working reliability of ...

AI Technical Summary

Problems solved by technology

Due to the high clearance precision requirements of the lead screw assembly and the limited space for measurement operations, it is difficult to measure, so it is difficult for ordinary tools and equipment to achieve effective measurement

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