Device and method for dismantling high-pressure oil pump of diesel engine
A high-pressure oil pump and dismantling device technology, which is applied to fuel injection devices, charging systems, mechanical equipment, etc., can solve the problems of potential safety hazards, cumbersome operations, and low work efficiency, and achieve the effects of safe disassembly, simple device structure, and easy operation
Active Publication Date: 2021-04-30
CSSC MARINE POWER
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Problems solved by technology
At this time, if the pressure on the roller is directly removed, the tappet, spring seat and spring will rush out of the high-pressure oil pump casing under the action of the return force of the compression spring in the high-pressure oil pump, which poses a major safety hazard
After the tappet is removed, the high-pressure oil pump needs to be turned over 180° and fixed on the maintenance workbench again, and the high-pressure oil pump returns to the original state where the oil outlet valve faces upwards, and then the plunger sleeve at the other end of the high-pressure oil pump can be disassembled and operated cumbersome and low work efficiency
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[0030] The present invention will be further described below in conjunction with drawings and embodiments.
[0031] Such as figure 1 and figure 2 As shown, the high-pressure oil pump 100 includes a tappet 1, a plunger 2, a plunger sleeve 3, a flange 4., an oil outlet valve 5, an oil outlet valve mounting screw 6, a flange mounting screw 7, a spring 8., and a spring seat 9. Seal ring 10, tappet bayonet pin 11, high-pressure oil pump housing 12, roller 13 and roller pin 14, roller 13 is supported in the lower end of tappet 1 through roller pin 14, tappet 1 is located in the high-pressure oil pump housing 12 In the lower end, the lifter pin 11 passes through the high-pressure oil pump housing 12 and extends into the outer edge groove of the lifter 1 to lock the lifter 1 in the high-pressure oil pump housing 12 . The upper and lower ends of spring 8 are respectively supported between the lower end of plunger sleeve 3 and spring seat 9. The lower end is against the upper end of...
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The invention discloses a dismantling device for a high-pressure oil pump of a diesel engine, comprising an operating platform, an operating platform overturning mechanism, an operating platform locking mechanism, a roller pressing mechanism and a base. The operating platform is located at both ends of the base, and the operating platform overturning mechanism is symmetrically arranged on the base On the upper end and two ends of the operating platform, the operating platform locking mechanism is arranged symmetrically between the upper end of the base and one end of the operating platform, and the roller pressing mechanism is vertically fixed at the center of the lower side of the operating platform. The method of the present invention includes: 1) turning the operating platform 180° and locking it vertically downward, removing the rollers, tappets and plungers of the high-pressure oil pump, 2) turning the high-pressure oil pump 180° again and locking it vertically upward, removing the The plunger sleeve of the high pressure oil pump. The device of the present invention has a simple structure and a convenient method, can dismantle the high-pressure oil pump very conveniently and safely, is easy to operate, saves trouble and labor, and improves the safety and work efficiency of dismantling the high-pressure oil pump.
Description
technical field [0001] The invention relates to a maintenance device for a diesel engine, in particular to a device and a method for conveniently dismantling internal parts of a high-pressure oil pump of a diesel engine, and belongs to the technical field of diesel engine maintenance. Background technique [0002] The high-pressure oil pump of a diesel engine is an important part used to deliver fuel to the cylinder block of a diesel engine. During the long-term use of a diesel engine, especially a marine diesel engine, it is often reported by the shipowner that the plunger of the high-pressure oil pump plunger has a yellow surface, and the surface Quality problems such as napping and abnormal wear. The reason is that, in order to save costs, the shipowner has been burning low-quality heavy fuel oil (HFO) for a long time, resulting in improper operation and maintenance of peripheral systems, and the shipowner has neglected to pay attention to the design of the fuel oil pipel...
Claims
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IPC IPC(8): F02M59/48
CPCF02M59/48
Inventor 张飞
Owner CSSC MARINE POWER