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Large high-pressure oil pump cam box assembly

A high-pressure oil pump and cam box technology, which is applied to engine components, fuel injection pumps, machines/engines, etc., to achieve the effect of improving firmness and convenience

Pending Publication Date: 2022-03-18
CHONGQING HONGJIANG MACHINERY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, the existing cam box cannot meet the requirements of large oil supply and heavy load of the single high-pressure oil pump of the low-speed machine

Method used

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  • Large high-pressure oil pump cam box assembly
  • Large high-pressure oil pump cam box assembly
  • Large high-pressure oil pump cam box assembly

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Experimental program
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Effect test

Embodiment Construction

[0029] Below in conjunction with accompanying drawing, the present invention is described in more detail:

[0030] combine Figure 1-Figure 6 , this embodiment provides a cam box assembly for a low-speed single-unit high-pressure oil pump, which mainly includes a lower box body 1, an upper box body 2, a left end cover assembly 3, a camshaft 4, a right end cover assembly 7, and a bearing bush assembly 14 etc.

[0031] The overall volume of the cam box is very large, and it is difficult to cast it as a whole, so the box adopts a split design, which is divided into a lower box 1 and an upper box 2.

[0032] The upper box body 2 is provided with three independently arranged middle holes as the high-pressure oil pump installation holes 6, and a set of low-speed unit high-pressure oil pumps can be assembled in each of the high-pressure oil pump installation holes.

[0033] see image 3 , in order to install the high-pressure oil pump, considering that cast iron is brittle and pro...

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Abstract

A large high-pressure oil pump cam box assembly comprises a lower box body, an upper box body, a cam shaft, a left end cover assembly, a right end cover assembly, a bearing bush assembly and the like. The box body adopts a split design, and a high-pressure oil pump mounting hole is formed in the upper box body and is used for mounting a high-pressure oil pump; a reverse thread bushing is arranged and is used for fastening the high-pressure oil pump; throttling plug screws are designed at the left end and the right end and used for controlling the amount of lubricating oil flowing into the left thrust plate and the right thrust plate. A lubricating oil channel is arranged in the box body and is used for lubricating the high-pressure oil pump, the bearing assembly, the left thrust plate and the right thrust plate; the oil tank is provided with a mixed oil return channel and is used for collecting mixed oil of the high-pressure oil pump and leading the mixed oil to the oil tank; the cam shaft supporting part adopts a sliding bearing instead of a ball bearing. Axial limiting of the cam shaft is achieved through the left thrust plate and the right thrust plate. A mechanical sealing ring is designed in the left end cover assembly and used for axial sealing of lubricating oil. The cam box assembly can meet the requirements of large oil supply amount and large load of an existing low-speed machine single-body type high-pressure oil pump on the cam box assembly.

Description

technical field [0001] The invention belongs to the technical field of marine low-speed engine fuel systems, and relates to a cam box assembly of a large high-pressure oil pump. Background technique [0002] The marine low-speed engine needs a single high-pressure oil pump with large fuel supply and heavy load. The single high-pressure oil pump itself does not have a camshaft for driving the oil supply unit to reciprocate up and down, so it needs to provide a camshaft externally. However, the existing cam box cannot meet the requirements of a large oil supply volume and a large load of a single high-pressure oil pump of a low-speed machine. Contents of the invention [0003] The purpose of the present invention is to provide a large-scale high-pressure oil pump cam box assembly for marine low-speed engines, which can meet the requirements of large oil supply and heavy load for the cam box assembly of the single high-pressure oil pump of low-speed engines. [0004] The pur...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F02M59/10F02M59/44F01M9/00
CPCF02M59/102F02M59/44F01M9/00
Inventor 栗东民涂天华刘洋许强刘惠娥张朝磊林小雪杨涛
Owner CHONGQING HONGJIANG MACHINERY
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