CN103822075A

CN103822075A - Lubrication circulating system for engineering machinery

Info

Publication number: CN103822075A
Application number: CN201410055443.0A
Authority: CN
Inventors: 张强; 王粲; 辛浩
Original assignee: Zhenjiang Suoda Coupling Co Ltd
Current assignee: Zhenjiang Suoda Coupling Co Ltd
Priority date: 2014-02-19
Filing date: 2014-02-19
Publication date: 2014-05-28

Abstract

The invention discloses a lubrication circulation system for engineering machinery. The lubrication circulating system comprises a power cylinder of an engineering machinery power system and a circulation loop of engineering machinery. A piston pushed through a cylinder pole is arranged inside the power cylinder. The power cylinder is divided into an upper chamber and a lower chamber through the piston, the lower chamber is filled with power hydraulic oil, an in-out oil port communicated with the lower chamber is arranged in the power cylinder, the upper chamber of the power cylinder is connected with a lubricating oil inlet pipe and a lubricating oil outlet pipe, the lubricating oil inlet pipe is connected with the circulation loop of lubricating oil through an inlet check valve, and the lubricating oil outlet pipe is also connected with the circulation loop of the lubricating oil through an outlet check valve. By the above structure, the power cylinder of the power system is utilized to provide circulation power for the lubricating oil circulation system, and a circulating pump is omitted; the lubrication circulation system is simple in structure and low in cost, few parts are used, mounting space is greatly reduced, and reliability of operation is greatly improved.

Description

Engineering machinery lubricating circulatory system

Technical field

The present invention relates to a kind of lubricating circulatory system, specifically a kind of engineering machinery lubricating circulatory system.

Background technique

As everyone knows, in engineering mechanical device (as fork truck, excavator), lubricant oil has separately the independently circulatory system to circulate, the existing circulatory system forms circulation loop by many pipelines that arrange, on circulation loop, there is the recycle pump that power cycle can be provided, as can be seen here, the circulatory system of existing these common engineering mechanical devices all has independently recycle pump and circulation loop; These circulation loops all need to arrange special recycle pump, on the one hand, make its manufacture cost high, and on the one hand, system complex, has not only increased installation space, has also reduced equipment reliability of operation in addition.

Summary of the invention

The technical problem to be solved in the present invention be to provide a kind of simple in structure, cost is low, reliable engineering machinery lubricating circulatory system.

In order to solve the problems of the technologies described above, engineering machinery lubricating circulatory system of the present invention, comprise the power cylinder of engineering mechanical power system and the circulation loop of engineering machinery, in power cylinder, be provided with the piston being promoted by beam hanger, power cylinder is divided into epicoele and cavity of resorption by piston, in cavity of resorption, there is power fluid force feed, on power cylinder, be provided with the oil inlet and outlet being communicated with cavity of resorption, the epicoele of power cylinder connects a lube oil inlet pipe and a lube oil outlet pipe, lube oil inlet pipe connects the circulation loop of lubricant oil by import one-way valve, lube oil outlet pipe also connects the circulation loop of lubricant oil through outlet one-way valve.

Described oil inlet and outlet is arranged on a side of power cylinder.

Adopt after above-mentioned structure, due to one of them chamber of a power cylinder lube oil inlet pipe and lube oil outlet pipe respectively of engineering mechanical power system, lube oil inlet pipe and lube oil outlet pipe are all connected on circulation loop, when action, oil cylinder drives piston to move up and down, realize the variation of two cavity volume by the movement of piston, thereby for circulation loop provides power, realize the fuel-displaced continuous circulation of oil-feed of oil circulation system, the present invention has utilized the power cylinder of power system as the circulation power that provides of oil circulation system, save recycle pump, simple in structure, cost is low, parts are few, reduce installing space and improved greatly reliability of operation.

Accompanying drawing explanation

Fig. 1 is the structural representation of engineering machinery lubricating circulatory system of the present invention.

Embodiment

Below in conjunction with the drawings and specific embodiments, engineering machinery lubricating circulatory system of the present invention is described in further detail.

As shown in the figure, engineering machinery lubricating circulatory system of the present invention, comprise the power cylinder 1 of engineering mechanical power system and the circulation loop of engineering machinery, in power cylinder 1, be provided with the piston 3 being promoted by beam hanger 2, power cylinder 1 is divided into epicoele 4 and cavity of resorption 5 by piston 3, in cavity of resorption 5, have power fluid force feed, be provided with the oil inlet and outlet 6 being communicated with cavity of resorption 5 on power cylinder 1, oil inlet and outlet 6 is arranged on a side of power cylinder 1; The epicoele 4 of power cylinder connects a lube oil inlet pipe 7 and a lube oil outlet pipe 8, and lube oil inlet pipe 7 connects the circulation loop of lubricant oil by import one-way valve, and lube oil outlet pipe 8 also connects the circulation loop of lubricant oil through outlet one-way valve.

Its working principle is as follows:

In the time that beam hanger 2 is descending, promote piston 3, make the volume of epicoele 4 become large, form negative pressure, the import one-way valve opens of lube oil inlet pipe 7 front ends, the outlet closed check valve of lube oil outlet pipe 8 ends, lubricant oil is drawn in epicoele 4.In the time that piston 3 is up, the import one-way valve of lube oil inlet pipe 7 front ends is closed by malleation, the outlet one-way valve opens of lube oil outlet pipe 8 ends, and the volume of epicoele 4 dwindles, and lubricant oil is extruded from lube oil outlet pipe 8; Piston does not stop to-and-fro motion, ceaselessly circulating lubrication of lubricant oil, and as can be seen here, the present invention by above-mentioned structure on the one hand, simplifies mechanical realization, does not need extra many oil pumps; Again on the one hand, lubricated action merges with acting action, has saved a lubricated control loop, in addition, can also use the dump energy of hydraulic oil cylinder driving, cost-saving.

Claims

1. an engineering machinery lubricating circulatory system, it is characterized in that: comprise the power cylinder (1) of engineering mechanical power system and the circulation loop of engineering machinery, in described power cylinder (1), be provided with the piston (3) being promoted by beam hanger (2), power cylinder (1) is divided into epicoele (4) and cavity of resorption (5) by described piston (3), described cavity of resorption has power fluid force feed in (5), on power cylinder (1), be provided with the oil inlet and outlet (6) being communicated with cavity of resorption (5), the epicoele (4) of power cylinder connects a lube oil inlet pipe (7) and a lube oil outlet pipe (8), lube oil inlet pipe (7) connects the circulation loop of lubricant oil by import one-way valve, lube oil outlet pipe (8) also connects the circulation loop of lubricant oil through outlet one-way valve.

2. according to engineering machinery lubricating circulatory system claimed in claim 1, it is characterized in that: described oil inlet and outlet (6) is arranged on a side of power cylinder (1).