An automatic lubrication system for an excavator

Abstract

The invention discloses an automatic lubricating system of an excavator. The system comprises a pump unit, a display unit and a distributor unit, wherein the pump unit is arranged at rear of an upper frame of the excavator; the pump unit comprises a control unit, a two-position five-way electromagnetic valve, an electric plunger pump and an oil storage tank; two main lubricating pipelines are leaded out from the pump unit; the oil storage tank is communicated with the two main lubricating pipelines through the two-position five-way electromagnetic valve; the display unit is installed in a cab, connected to the control unit and used for observing and controlling a working state of the automatic lubricating system in real time; the distributor unit comprises a plurality of distributors which are respectively connected to the two main lubricating pipelines in parallel; and, according to lubricating grease required quantities of a lubricating points, oil lubricators of different standardsare installed on the plurality of distributors and then connected to various types of lubrication points. According to the system disclosed by the invention, the lubricating mode of the excavator is convenient to adjust; the injection flow is precise; and the system has the advantages of smooth and steady operation, high automation degree and simple and convenient installation, maintenance and operation.

Description

technical field [0001] The invention relates to a lubricating system applied in the field of engineering machinery, in particular to an automatic lubricating system of an excavator. Background technique [0002] As a main machine for earthwork construction, excavator has played an important role in modern engineering construction. During the working process of the excavator, the wear condition and lubrication effect between the bearings will affect the working efficiency and service life of the excavator. As people gradually understand the knowledge of friction, wear and lubrication, the friction between the bearings of the excavator The grease filling method of the vice also puts forward higher requirements. The traditional lubrication method adopts the method of manually adding grease one by one. Specifically, during the process of adding grease to the excavator, the operator needs to manually add grease to each lubrication point after stopping the machine, which cannot e...

AI Technical Summary

Problems solved by technology

The traditional lubrication method adopts the method of manually adding grease one by one. Specifically, during the process of adding grease to the excavator, the operator needs to manually add grease to each lubrication point after stopping the machine, which cannot effectively control the amount of lubrication and the lubrication interval during work. , the lubrication amount of each lubrication point cannot be effectively guaranteed, and the lubrication effect cannot be dynamically detected and controlled during the working process, which increases the time and energy of the operator and maintenance costs

Moreover, due to the large mechanical structure of the excavator and the scattered lubrication points, the operator needs to constantly adjust the position when replenishing the grease, which is likely to cause safety accidents such as falls. Therefore, the traditional manual lubrication method cannot achieve accurate, safe and convenient lubrication effects

Progressive automatic lubrication technology is commonly used in the industry at this stage, and there are many problems in this solution: (1) The diameter of the oil pipe is small, the line is long, and the pressure loss of the system is large. In order to realize the lubrication amount of each lubrication point Requirements, the grease pump is required to provide a large system pressure, which has high requirements for the system material and circuit design, and the grease is easy to segregate under high pressure, thereby blocking the lubrication system pipeline; (2) The main circuit of the progressive lubrication system It is a single line in series, if a certain part of the distribution block is blocked, the plunger at that place will stop reciprocating, and the cycle of alternately injecting oil to each line will be stagnated only by the interaction of the grease pressure difference in the pipeline and the reciprocating movement of the plunger , the entire lubrication system has no lubrication effect, which causes great damage to the machine; (3) The degree of automation is low, and the adjustment of the amount of lubrication according to different working conditions and the real-time monitoring of the working status of the lubrication system still need to be operated manually after shutdown, which is time-consuming and laborious

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