Main bearing cover

Abstract

The invention discloses a main bearing cover. The main bearing cover comprises connecting columns; through holes are formed in the bearing cover; first openings are formed in the positions, corresponding to the through holes, of a bearing seat; the connecting columns are inserted into the through holes and the first openings to be connected with the bearing cover; a first containing cavity, a first permanent magnet and a first limiting block are arranged in the bearing cover; the first containing cavity allows the first permanent magnet to slide therein; the first limiting block limits the movement of the first permanent magnet; a second containing cavity and a second permanent magnet are arranged in the bearing seat; and the second containing cavity allows the second permanent magnet to slide therein and is suitable for the first permanent magnet to slide therein. According to the main bearing cover, the pre-assembly of the bearing cover and the bearing seat can be finished in the assembly process, so that the assembly mode of the bearing seat and the bearing cover is simplified, the disassembly efficiency is improved; and a crankshaft can be prevented from moving between the transverse direction and the longitudinal direction, and the impact force can be effectively reduced and the crankshaft can be prevented from being damaged during the vibration and collision of a vehicle.

Description

technical field [0001] The present application relates to the technical field of engine components, in particular to a main bearing cap. Background technique [0002] The main bearing cap is installed on the cylinder block of the car, and the parts of the main journal of the crankshaft are fixed together by the main bearing cap and the cylinder block, thereby preventing radial movement of the crankshaft during operation. [0003] In the prior art, the bearing cap and the bearing seat are usually connected by bolts. On the one hand, the bolt connection needs to be equipped with special tools for disassembly, and considering that the assembly of the bearing cap and the bearing seat needs to withstand the impulse from the engine, it is difficult for the assembler. High assembly requirements lead to low disassembly efficiency; on the other hand, due to the bolt connection, the crankshaft and the main bearing cap often have an interference fit, so when the vehicle vibrates or col...

AI Technical Summary

Problems solved by technology

[0003] In the prior art, the bearing cap and the bearing seat are usually connected by bolts. On the one hand, the bolt connection needs to be equipped with special tools for disassembly, and considering that the assembly of the bearing cap and the bearing seat needs to withstand the impulse from the engine, it is difficult for the assembler. High assembly requirements lead to low disassembly efficiency; on the other hand, due to the bolt connection, the crankshaft and the main bearing cap often have an interference fit, so when the vehicle vibrates or collides, the crankshaft will be caused by the interference fit. damage, thus affecting its normal use

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