Crosshead bearing, crosshead, frame, and crosshead internal combustion engine

A technology of crossheads and crosshead pins, which is applied to bearings, connecting rod bearings, bearing components, etc., can solve the problem of oil film damage and achieve the effect of inhibiting damage
CN110446864APending Publication Date: 2019-11-12MITSUBISHI HEAVY IND LTD +1
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Patent Information

Authority / Receiving Office
CN · China
Current Assignee / Owner
MITSUBISHI HEAVY IND LTD
Publication Date
2019-11-12

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Abstract

Provided are a crosshead bearing, a crosshead, a frame, and a crosshead internal combustion engine. The present invention comprises: a semi-circular cylindrical bearing body (71); a bearing surface (72) provided on the inner surface of the bearing body (71); a communication hole (75) as a communication section, the communication hole (75) extending through the bearing body (71) in the thickness direction thereof; and a tilted groove (76) as a sloped section, the tilted groove (76) being formed in the inner surface of the bearing body (71) and having a depth increasing from the opposite axial ends of the bearing body (71) toward the center thereof.
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Description

technical field

[0001] The present invention relates to a crosshead bearing used in a crosshead internal combustion engine constituting an internal combustion engine such as a diesel engine or a gas engine, a crosshead provided with the crosshead bearing, a frame provided with the crosshead, and a crosshead internal combustion engine provided with the frame. Background technique

[0002] For example, as a main engine for ship propulsion, there is a two-stroke one-cycle single-flow scavenging type crosshead internal combustion engine. This crosshead internal combustion engine includes a crosshead bearing device for converting reciprocating motion of a piston into rotational motion of a crankshaft. The crosshead bearing device includes a connecting rod and a bearing shell. The lower end of the connecting rod is connected to the crank, and the upper end of the connecting rod is provided with a semicircular bearing surface, and the bearing bush is in the shape of a semicylindri...

Claims

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