Engine air valve locking plate pressure head

Abstract

The invention discloses an engine air valve locking plate pressure head. A guide positioning shaft, an inner pressure head spring and a positioning shaft spring are arranged in an outer pressure head; a guide screw plug is arranged in an inner hole on the upper part of the outer pressure head, an inner pressure head is arranged in an inner hole on the lower part of the outer pressure head, and the bottom surface of the outer pressure head is provided with a positioning groove; and the peripheral wall of the positioning groove is provided with at least two positioning holes distributed uniformly according to the circumference, a steel ball is arranged in each positioning hole, each steel ball is provided with a reed, the upper part of the reed is fixed with the outer pressure head, and the lower part of the reed is pressed on the corresponding steel bal so that the small part of ball body of the steel ball is positioned in the positioning groove. The engine air valve locking plate pressure head has the advantages of simple operation, low labor intensity of workers and high work efficiency, and is not easy to damage an air valve, an air valve locking plate and an upper spring seat; and the upper spring seat and an air valve rod are positioned more accurately, and the locking plate is pressed in place more easily, so the locking plate is effectively prevented from falling in the running process of an engine, the locking plate is not popped up or inclined, and the assembly efficiency is improved.

Description

technical field [0001] The invention belongs to the technical field of fixtures, and in particular relates to a pressure head for an engine valve lock plate, which is used for pressing the valve lock plate into the valve and spring upper seat. Background technique [0002] During the engine assembly process, installing the valve lock plate is a very important link. At present, the valve locking plate assembly method adopted by various engine manufacturers is: the locking plate is installed in the spring upper seat, then placed on the valve spring, and pressed by a press. The disadvantage of this press-fitting method is that the free swing of the valve spring on the cylinder head is relatively large, resulting in inaccurate positioning of the axis line of the valve stem, spring upper seat and pressure head during press-fitting, which increases the difficulty of assembly and easily causes If the locking piece is not pressed properly, it often happens that the locking piec...

AI Technical Summary

Problems solved by technology

The disadvantage of this press-fitting method is that the free swing of the valve spring on the cylinder head is relatively large, resulting in inaccurate positioning of the axis line of the valve stem, spring upper seat and pressure head during press-fitting, which increases the difficulty of assembly and easily causes If the locking piece is not pressed properly, it often happens that the locking piece pops out during pressing, or the locking piece is stressed and skewed during the pressing process, resulting in the failure to complete the pressing. On the one hand, the assembly time is prolonged, and the efficiency of pressing is low. On the one hand, it increases the workload of workers and requires higher proficiency of workers

In addition, during the pressing process, the guide positioning shaft in the indenter is prone to jump, which will also affect the efficiency and accuracy of locking plate pressing

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