Fixed roller pin for high-pressure oil pump
A high-pressure oil pump and moving roller technology, which is applied to engine components, fuel injection pumps, machines/engines, etc., can solve the problems of reducing the service life of rollers and roller pins, increasing contact stress, and aggravating the wear of rollers and roller pins. The effect of prolonging service life, improving wear, and improving bearing capacity
Inactive Publication Date: 2012-09-05
WUXI XIZHOU MACHINERY
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- Abstract
- Description
- Claims
- Application Information
AI Technical Summary
Problems solved by technology
In the tappet parts used in the past, there is a clearance fit between the roller and the roller pin, and the lubricating oil cannot sufficiently enter between the roller and the roller pin for lubrication, and as the edge stress gradually increases, the friction between the roller and the cam The contact stress between the pairs is constantly increasing, which intensifies the wear between the roller and the roller pin, and reduces the service life of the roller and the roller pin
Method used
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Embodiment Construction
[0012] The present invention will be further described below in conjunction with specific drawings.
[0013] like Figure 1~Figure 2 Shown: the fixed roller pin for high pressure oil pump includes pin body 1, boss 2, groove 3, lubricating oil hole 4, lubricating inclined hole 5, positioning hole 6, lubricating hole 7, positioning through hole 8, first oil storage Hole 9, the second oil storage hole 10 and so on.
[0014] The present invention includes a cylindrical pin body 1, and a conical boss 2 is provided on the end surface of one end of the pin body 1, and the boss 2 is a process boss, which is used for clamping during surface treatment; 1 The end surface of the other end is provided with a stepped positioning hole 6 along the axial centerline of the pin body 1;
[0015] On the pin body 1 near one end of the boss 2, a positioning through hole 8 is provided along the radial direction of the pin body 1, and the openings at both ends of the positioning through hole 8 are l...
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The invention relates to a fixed roller pin for a high-pressure oil pump. The fixed roller pin comprises a cylindrical pin body; one end of the pin body is provided with a lug boss, and the other end of the pin body is provided with a positioning hole along an axial center line of the pin body. The fixed roller pin is characterized in that two grooves are symmetrically arranged on the outer surface of the pin body along the axial direction of the pin body; lubrication oil holes which radially pass through along the pin body are arranged in groove bodies of grooves; openings at the two ends of the lubrication oil hole are respectively arranged in the two grooves; a lubrication hole is arranged in the positioning hole along the axial center line of the pin body; the lubrication hole which is axially arranged along the pin body passes through the lubrication oil hole which is radially arranged along the pin body; a lubrication inclined hole is arranged on the pin body which is close to one end of the positioning hole along the pin body in a radially inclined manner; and the lubrication inclined hole is communicated with the lubrication hole which is axially arranged along the pin body. The fixed roller pin provided by the invention introduces lubrication oil into an oil storage groove; and lubrication oil is contained and distributed in the oil storage groove. When the fixed roller pin is in use, a roller forms a movement oil membrane with a roller pin when moving, so that the contact form is changed; the abrasion is improved; the service life is prolonged; and the bearing capability of the roller pin is improved.
Description
technical field [0001] The invention relates to a fixed roller pin for a high-pressure oil pump, in particular to a roller pin for improving the bearing capacity of a roller in a high-pressure oil pump for a diesel engine. Background technique [0002] With the development of the times, the continuous development and innovation of technology, and the continuous promotion of energy conservation and environmental protection, the high pressure of fuel injection is the inevitable way for the development of fuel supply system. When working, the roller plays the role of converting the rotation of the cam into the movement of the plunger in the fuel injection pump to complete the operation of the pump. It is one of the important parts of the automobile work. Since the roller is often in the state of high-speed rotation, it is also one of the workpieces that are easy to wear in the oil pump. In the tappet parts used in the past, there is a clearance fit between the roller and the r...
Claims
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Inventor 包建忠
Owner WUXI XIZHOU MACHINERY