Diesel engine fuel supply system roller
A technology of oil supply system and diesel engine, applied in the direction of shafts and bearings, can solve the problems of roller fatigue damage, roller surface pitting, roller wear, etc., and achieve the effect of increasing the contact area, reducing damage and improving service life
Inactive Publication Date: 2012-09-19
CHANGZHOU HUADIAN TRANSFORMER
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Problems solved by technology
[0002] The oil supply system is an important part of the diesel engine, and the oil supply pressure and the inertial force of the moving parts all fall on the cam and the roller, which increases the working strength of the cam and the roller. The existing roller is a single-drum roller. In high-speed motion, it is not pure rolling, but rolling with side-to-side swinging. Therefore, in the interaction with the cam, the maximum stress on the single-drum roller does not appear at the arc top of the single drum, but concentrates on the arc top. The arcs on both sides are easy to cause pitting on the surface of the roller, and also reduce the thickness of the lubricating oil film between the cam and the roller, which will aggravate the wear on the roller, and eventually cause the roller to fatigue, damage or even fail
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[0010] Such as figure 1 It is a schematic diagram of the present invention, a diesel engine fuel supply system roller, including a roller 1 and a wheel body 2, the roller shaft 1 is inserted in the center of the wheel body 2, and a pit 3 is provided in the center of the outer circular surface of the wheel body 2. The middle of the outer circular surface of the wheel body 2 is low, and the two ends are high, symmetrical about the center line.
[0011] When the roller interacts with the cam, the maximum stress is concentrated on the two shoulders of the pit 3, which fully increases the contact area and further improves the bearing capacity of the wheel body 2. The pit 3 is convenient for storing more lubricating oil and improving Lubricity reduces mechanical friction and prolongs the service life of the wheel body 2.
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The invention relates to the field of diesel engine power plant, in particular to a diesel engine fuel supply system roller. The diesel engine fuel supply system roller comprises a rolling shaft and a roller body, wherein the rolling shaft is inserted into the center of the roller body, and a concave pit is arranged at the center of the outer circular surface of the roller body. The middle of the outer circular surface of the roller body is low, two ends of the outer circular surface of the roller body are high, and the outer circular surface of the roller body is symmetrical along a central line. A structure which is low in the middle and high at two ends is used so that the contact area of the roller and a cam is increased during the interaction of the roller and the cam, the stress is reduced, simultaneously the thickness of a lubricating oil film is increased, and the lubricating efficiency is improved. Accordingly, the damage to the roller is reduced, and the service life of the roller is greatly improved.
Description
technical field [0001] The invention relates to the field of diesel engine power devices, in particular to a diesel engine oil supply system roller. Background technique [0002] The oil supply system is an important part of the diesel engine, and the oil supply pressure and the inertial force of the moving parts all fall on the cam and the roller, which increases the working strength of the cam and the roller. The existing roller is a single-drum roller. In high-speed motion, it is not pure rolling, but rolling accompanied by side-to-side swinging. Therefore, in the interaction with the cam, the maximum stress on the single-drum roller does not appear at the arc top of the single drum, but concentrates on the arc top. The arcs on both sides are easy to cause pitting on the surface of the roller, which also reduces the thickness of the lubricating oil film between the cam and the roller, aggravates the wear on the roller, and eventually causes the roller to fatigue, damage o...
Claims
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IPC IPC(8): F16C13/00
Inventor 周剑非
Owner CHANGZHOU HUADIAN TRANSFORMER