Analyzing the problem of oil pump of mini excavator

[BONOVO]

What is the situation of high temperature in the oil pump and cylinder valve of the mini excavator?

1. The system pressure of the excavator is too high.

2. The excavator lacks oil supply.

3. The height of the unloading valve pressure adjustment causes the excavator oil pump, oil motor and various valves of the cylinder to overheat.

4. The excavator oil pump is inefficient.

5. There are problems with the oil cooling system, which causes the excavator oil pump, oil motor and various valves of the cylinder to overheat.

The application field of mini excavators continues to expand

1. Restart the approval of urban rail transit projects. The rise of the multi-track transportation construction boom

Mini excavator manufacturers

After a year of suspension, the approval of urban rail transit projects was restarted in July. Recently, the relevant departments held a board meeting to review and approve the third phase of the urban rail transit construction plan in Changchun City, Jilin Province. The third phase of the Changchun Urban Rail Transit Construction Plan includes 8 lines, including Line 5, Line 6, Line 7, Airport Line and Shuangyang Line, with a total length of 135.4 kilometers; the total investment is 78.732 billion yuan, and the capital ratio is 40%. The remaining funds are settled by domestic banks; the planning period is from 2018 to 2023. In addition, the total investment in the third phase of Suzhou Urban Rail Transit is about 95 billion yuan. It is reported that Hangzhou Airport Railway Express is awaiting review and will be approved by the end of August, and construction will begin before the end of the year. The approval of the third phase of Xi'an Metro is also in full swing. At the same time, cities such as Hangzhou, Chongqing, Nanchang, and Shijiazhuang are accelerating subway construction, and some recently approved projects have also been launched.

2. Equipment replacement

Generally speaking, the service life of construction machinery equipment is about 8 years, and the final sales peak is still in 2011. Since 2018, the construction machinery field will enter the equipment elimination stage. At the same time, due to the implementation of strict environmental protection policies, equipment holders will further update their equipment to meet new emission standards. The new market space will further stimulate the demand for micro-drilling equipment.

Relevant organizations have released the "13th Five-Year Plan" railway development plan. By 2020, the national railway operating mileage will reach 150,000 kilometers, including 30,000 kilometers of high-speed railways. The double-line rate and electrification rate will reach 60% and 70% respectively, and the layout has basically been formed. A reasonable, extensive, well-defined, safe and efficient railway network. China's railway investment of 800 billion yuan will last for ten years.

The failure of the oil pump of the micro excavator and the overtemperature of the valve are also normal phenomena. We don't need to worry too much. As long as we maintain the machine well, check the problem in time, we can reduce the failure rate by more than half.

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