Propeller blade small-space area laser measuring head for ship

Abstract

The invention provides a propeller blade small-space area laser measuring head for a ship. The propeller blade small-space area laser measuring head comprises a fixing base, a supporting rod, a measuring head mounting rod and a laser measuring head body, the supporting rod is fixedly installed on the fixing base, the measuring head mounting rod is slidably installed on the supporting rod, slidingis achieved relying on the cooperation of a chain inside the supporting rod, a gear and a motor, a longitudinal moving structure adapts to height change of multiple propeller blades, the measuring head mounting rod stretches out and draws back through an air cylinder inside, and a transverse telescopic structure is applicable to different propeller blade diameters; the laser measuring head body only comprises a laser transmitter and a laser receiver, the structure is simplified to measure a small-space area, the laser measuring head body can rotate in a mounting base, and when the placing angle of the propeller blades is not changed, the angle of the measuring head can be measured in multiple directions by adjusting the angle of the measuring head. The propeller blade small-space area laser measuring head for the ship is reasonable in structural design, the measuring head body is small and compact, the measuring head is applicable to measuring the small-space area of the propeller blades and is adjustable in angle, and the measurement direction is more comprehensive.

Description

technical field [0001] The invention belongs to the technical field of measuring machinery, and in particular relates to a laser measuring head for a small space area of ​​a marine propeller blade. Background technique [0002] Propeller refers to a device that converts the rotational power of the engine into propulsion by rotating the blades in the air or water. There may be two or more blades connected to the hub, and the rear side of the blades is a helical surface or similar to a helical surface. A marine propeller. [0003] The marine propeller is the core component of the ship. It is the most efficient and widely used type of marine propeller. Its main function is to make the ship move forward and backward, and sometimes assist the ship to turn. The performance of a ship depends on the three major factors of the ship's ship type, main engine and propeller. The propulsion efficiency of the propeller mainly depends on the design and manufacture of the propeller blades,...

AI Technical Summary

Problems solved by technology

At present, many domestic enterprises have begun to use four-coordinate and five-coordinate CNC milling machines to process marine propellers, and then polish them to a satisfactory accuracy. These are inseparable from the final manual polishing of propellers. Although manual polishing can achieve complex curved surfaces Grinding and polishing, but due to the subjective influence of people, the quality of the curved surface is determined by the proficiency of the operator, so it is impossible to effectively control the dimensional accuracy of the workpiece, resulting in poor processing accuracy and difficult to guarantee the quality of the surface. Therefore, the propeller The accuracy of the blade must be accurately measured, and then readjusted according to the measurement results to ensure the performance of the ship

[0004] However, propeller blades have a variety of structural forms, and it is difficult for the existing measuring devices to accurately measure the small space between the blades, which will affect the overall accuracy of the propeller blades, and even affect the working performance of the propeller and the operating performance of the ship. Small space areas require a new type of measuring head

Images