Operating device and method for connecting rod crosshead assembly of marine low-speed diesel engine

Abstract

Disclosed are a working device and a working method of connecting-rod and crosshead assemblies of marine low-speed diesel engines. The working device comprises a connecting rod transfer frame comprising a working platform, a platform base, a plurality of lifting steel wire ropes and a ladder. The working platform is provided with multiple accommodating holes for the connecting-rod and crosshead assemblies to run through; blocks for setting of the connecting-rod and crosshead assemblies are respectively arranged on the side of each accommodating hole. The platform base is disposed on the ground and fixedly supports the working platform in air by multiple columns. The lifting steel wire ropes are connected with the working platform through lugs. The ladder connects the working platform to the ground. The working device further comprises multiple mounting bases mounted on the lower portion of the connecting rod transfer frame. The working device has the advantages of diversified function, field flexibility, small space occupation, high working efficiency, wide applicable range and field equipment resource economization, and can be used for assembling, placing and transferring of different types of connecting-rod and crosshead assemblies of the marine low-speed diesel engines.

Description

technical field [0001] The invention relates to a station appliance used in the manufacturing process of a marine low-speed diesel engine, in particular to an operating device and method for assembling and transferring a connecting rod crosshead assembly of a marine low-speed diesel engine, and belongs to the technical field of mechanical manufacturing. Background technique [0002] During the manufacturing and processing of heavy machinery, we often face the problems of assembling, placing and transferring large parts with large volume and overweight. For some large parts of marine low-speed diesel engines, such as connecting rod crosshead assembly, see figure 1 , including the connecting rod 14 and the slide block 15 connected thereto, its volume is very large, and some are even several times the height of a human body. [0003] The traditional method of assembling, placing and transferring the connecting rod crosshead assembly is to designate a certain area in the assemb...

AI Technical Summary

Problems solved by technology

The technical difficulty and cost of constructing the operation pit for the assembly of the connecting rod crosshead assembly is relatively high, and the size, depth, and quantity of the pit must be forward-looking to a certain extent, and it is difficult to fully adapt to the future development status and market demand of diesel engine technology

[0007] 2. It is difficult to transform the operation pit, and the flexibility is poor

At present, diesel engines are developing in the direction of ultra-long stroke and a new generation of environmentally friendly main engines. The size and length of connecting rods have undergone tremendous changes. The transformation of operation pits is not only a long cycle but also never keeps pace with the development of diesel engines.

[0008] 3. High dependence on transfer equipment, high inefficiency in pit occupation, and low equipment utilization and labor efficiency

The assembly of the connecting rod crosshead assembly requires that the connecting rod must be in a standing state. After the assembly is completed, it still needs to be stored and transferred in a standing manner. Therefore, when the production is tight, the production progress will be delayed due to waiting for the crane to be transported; in addition, In view of the increasing requirements of shipowners, it often happens that the connecting rod crosshead assembly needs to be disassembled and repaired after the diesel engine is submitted. The maintenance cycle of the connecting rod crosshead is generally longer. Once the maintenance needs to occupy the operation pit , it will affect the assembly work of the normal production connecting rod crosshead assembly

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