Marine diesel engine cross head pin slide block assembly built-in fixing device and method

Abstract

The invention provides a marine diesel engine cross head pin slide block assembly built-in fixing device and method. The built-in fixing device is fixed in a rack and is supported at the bottom of a cross head pin slide block assembly; the built-in fixing device comprises a supporting body and a height adjusting component; the supporting body is fixed on the inner side face of the rack and comprises a vertical part and a horizontal part; a horizontal installation through hole is formed in and a cylindrical support is arranged on the vertical part; the cylindrical support is axially and horizontally arranged on the left side of the vertical part, and is placed in an installation hole in the rack; the horizontal part is arranged on the right side of the vertical part; a vertical threaded hole is formed in the horizontal part; and the height adjusting component is connected with the horizontal part and is supported at the bottom of the cross head pin slide block assembly, and the positionthereof on the supporting body is adjusted in a threaded mode to adjust the supporting height of the cross head pin slide block assembly. In an overhauling process, the cross head pin slide block assembly is fixed inside the rack, overhauling operation can be completed without disassembling the rack, the process is simplified, efficiency is improved, and safety is improved.

Description

technical field [0001] The invention relates to assembly and dismantling operations of a marine diesel engine, in particular to an in-machine fixing device and method for a crosshead pin slider assembly of a marine diesel engine, and belongs to the technical field of diesel engine manufacturing. Background technique [0002] The crosshead pin bearing in the crankcase of the marine diesel engine, commonly known as the crosshead pin, is an important moving part, see figure 1 , which connects the piston assembly with the connecting rod d, and transmits the kinetic energy of repeated work up and down to the connecting rod d, and the connecting rod d then drives the crankshaft e to rotate. The front and rear ends of the crosshead pin c are respectively equipped with a slider b, and the crosshead pin c is guided forward and backward according to the guidance of the slider guide plate on the frame a and the side plate fastened to the slider b to prevent deviation . Because the cr...

AI Technical Summary

Problems solved by technology

[0014] 1) The working space in frame a is narrow, and the weight of the chain hoist is relatively heavy. Repeated disassembly and assembly of the chain hoist leads to low efficiency and consumes a lot of manpower and material resources;

[0015] 2) When the crosshead pin slider assembly is removed from the frame a, three people are required to work together at the same time, which requires a high level of skill for the operators;

[0016] 3) Using a chain hoist to work in the frame a is easy to cause collision damage with the moving parts in the machine, resulting in unnecessary losses;

[0017] 4) Repeated climbing operations inside and outside the frame a will cause painful operations and there are unsafe factors

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