A main bearing cap

Abstract

The application discloses a main bearing cover. The main bearing cover includes a connecting column. A through hole is opened on the bearing cover. A first opening is opened on a position corresponding to the through hole on the bearing seat. The connecting column is inserted into the through hole and the first opening. The bearing cover is connected with the connecting column in the hole; the bearing cover is provided with a first cavity, a first permanent magnet and a first limit block, the first cavity is for the first permanent magnet to slide in it, and the first limit block The block restricts the movement of the first permanent magnet; the bearing seat is provided with a second cavity and a second permanent magnet, and the second cavity is for the second permanent magnet to slide in it, and the second cavity is suitable for the first permanent magnet in it slide. The present application provides a main bearing cap, which can complete the pre-assembly of the bearing cap and the bearing seat during the assembly process, simplifies the assembly method between the bearing seat and the bearing cap, improves the disassembly efficiency, and can prevent the crankshaft The movement between longitudinal directions can effectively slow down the impact force and avoid damage to the crankshaft when the vehicle vibrates or collides.

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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