Large journal bearing clearance measurement tool and method for marine diesel engine
A marine diesel engine and bearing clearance technology, applied in the direction of mechanical clearance measurement, etc., can solve problems such as inaccurate measurement results, leaving marks, scratches on bearing bushes or main journals, etc., to ensure safe operation, accurate measurement results, and avoid journals scratched effect
Active Publication Date: 2014-10-08
HUDONG HEAVY MACHINERY
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Problems solved by technology
Although the whole process is simple, there are also problems at the same time: firstly, the bearing bush or the main journal is easily scratched and left marks during the process of inserting the feeler gauge; or improper operation, the gap between the plugs will lead to inaccurate measurement results; in addition, this method needs to add up the thickness of each plug to get the result, so it is not intuitive enough
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[0030] The present invention is an accurate and easy-to-use bearing clearance measurement tool, which uses a dial indicator to measure the main bearing clearance through a pre-processed measurement hole on the main bearing cover, which is more standardized than the current method of measuring with a feeler gauge. The data is more accurate, thus ensuring the safe operation of the host.
[0031] The detailed structure and application method of the tool for large journal bearing clearance measurement of marine diesel engines according to the present invention will be further described below in conjunction with the accompanying drawings and specific embodiments, but this should not limit the protection scope of the present invention.
[0032] see figure 1 , the tools used to measure the clearance of large journal bearings of marine diesel engines include bearing clearance gauge 1, measuring gauge 2, label 3, hexagonal wrench 4 and tool box 5.
[0033] see figure 2 , the bearing...
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A large journal bearing clearance measurement tool for a marine diesel engine comprises a bearing clearance measurement gauge and a gauge, wherein the bearing clearance measurement gauge comprises a measuring head, a connecting rod, a pipe clamp and a dial indicator, the measuring head is inserted into the connecting rod and can freely slide, the connecting rod is connected with the pipe clamp, the dial indicator is clamped and fixed to the pipe clamp, the position of the dial indicator can be adjusted, and the ends of the dial indictor make contact with the tail of the measuring head; a connecting rod inserting hole and a measuring head inserting hole are formed in the gauge, the bearing clearance measurement gauge penetrates through the connecting rod inserting hole and the measuring head inserting hole, and the connecting rod inserting hole and the measuring head inserting hole are coaxial, the diameter of the measuring head inserting hole is smaller than that of the connecting rod inserting hole, the gauge is further provided with a zero-position reference face making contact with the measuring head and a zero correcting face abutting against the connecting rod, the zero correcting face and the zero-position reference face are perpendicular to the connecting rod inserting hole, and the distance between the zero correcting face and the zero-position reference face is standard zero-position correction distance. The large journal bearing clearance measurement tool has the advantages of being accurate in measurement result and convenient to operate and use, meanwhile, the danger that journal scratch can be caused easily because of use of a filler gauge is avoided, an important guarantee is provided for building a lubricating oil film, and safe operation of a main engine is guaranteed.
Description
technical field [0001] The invention relates to a measuring tool, in particular to a tool and a method for measuring the clearance of a large journal bearing of a marine diesel engine, and belongs to the technical field of diesel engines. Background technique [0002] Abrasion events of marine diesel engines occur from time to time, among which the main bearing journal and the bearing bush also often wear and tear, which will lead to replacement of the bearing bush or even strain the journal in severe cases. The main reason for the wear between the main journal and the bearing bush is that there is no wedge-shaped lubricating oil film between them, which leads to dry friction between the main journal and the bearing bush. Therefore, whether a normal wedge-shaped oil film can be established between the main journal and the bearing bush is the guarantee of the diesel engine. An important guarantee for long-term operation. The study found that when the gap between the main jou...
Claims
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Inventor 吕洪亮龙林钢
Owner HUDONG HEAVY MACHINERY