micro excavators which brand is good

micro excavators which brand is good at this stage micro excavators are foreign-funded enterprises and domestic. Generally, people think that the micro excavator of foreign enterprises is of high standard, but it is also expensive. But after more than ten years of development trend, the characteristics of domestic micro digging has already reached the leading position, such as Yugong machinery and equipment micro digging, not only get rid of overseas fortress, many areas far beyond foreign enterprises. Advantages of micro excavators: 1, with

caused by the small excavator high temperature?

"hot days secretly in the past, there are also autumn tiger ~" summer has long gone, but hot autumn tiger is still in, want to many excavator people to be exposed to the sun at the same time, will also encounter equipment overtemperature suspicion, so what are the reasons for the small excavator high temperature?

1 test heat pipe radiator small excavator durability in the state of difficult environment, so often a lot of dust, small dirt plug hydraulic machine heat pipe radiator and water storage tank heat pipe radiator, In particular, the heat pipe radiator of the hydraulic press has a small amount of oil leakage state is the most abnormal easy to plug the heat pipe radiator of the water storage tank behind, so everyone should pay attention to see whether there is oil leakage of the heat pipe radiator of the hydraulic press.

2 Test car hair cylinder pad is not clear whether everyone has paid attention to the water storage tank in the circulation system of the case is what? There will be bubbles, right? If there is such a thing as the idea of a car cylinder liner that has the problem of a high-speed punch.

3 inspection centrifugal pump operation machinery then special pinched water tank outlet, if that pinched the situation is a little hard, that explains the centrifugal pump no problem, if very random pinched flat understanding of the release centrifugal pump circulation system is not good! Water tank cover failure is also caused by temperature rise, due to the failure of the water tank cover, will be unusually easy to cause water inlet in the case of water circulation system. So the temperature is higher!" The water temperature sensor is opened with small force or is already stuck. Something that is usually taken down in summer!" The fan is not fast, unable to keep up with the car idea belt plate, which is also unusually easy to have temperature rise! Check the gasoline pump.

7 test gasoline pump total flow of nature is now all computer controlled machinery, but also like gasoline pump oil too much or too small, or oil pump Angle PI error. It is also unusually prone to high temperatures. However, this state of affairs is quite rare.

8 inspection waterways

waterways have stains, resulting in water supply cut, is also a difficult problem oh.

9 Test car antifreeze if your machinery in the addition of car antifreeze occurs in the state of evaporation. Explain that you didn't use ethylene glycol car antifreeze. Because the real glycol automobile antifreeze melting point can do 105-110 degrees, higher than the density of air, is not easy to evaporate. Therefore everybody should pay attention to the vehicle antifreeze this instrument!"

10 gear oil high temperature

high temperature analysis of hydraulic press

gear oil temperature is too high, is a common problem of small excavator hydraulic transmission system, the reason is complex, involving the common fault problems are relatively common, usually difficult to clearly determine, The reason of high temperature of hydraulic press is divided into sudden high temperature common faults and permanent high temperature common faults, and the deadline of small excavator is abnormal, the practical problems are divided into the following categories:

gear oil heat pipe radiator internal blockage or the heat pipe radiator outside is very dirty harm the practical effect of heat discharge; 1, hydraulic oil filter element lack of gear oil or gear oil is too dirty, hydraulic filter element blockage will lead to high temperature; 2, gear oil leakage in the hydraulic transmission system is too much, resulting in gear oil leakage too much, each valve core of the hydraulic accessories damage caused by idle too high temperature; 3, pump oil this product damage (torsion spring damage or valve plug) resulting in pump oil no friction resistance or no after the heat pipe radiator immediately pump oil; 4, power supply circuit system abnormality, sensor or strange path problem, false alarm; 5, the hydraulic pump internal leakage over scale so that things in the equipment posture slow down, resulting in high temperature; 6, the car idea driving force is not enough, so that the hydraulic transmission system load expansion, things in the equipment friction resistance increases, high temperature; 7, for large and medium-sized small excavators, the hydraulic transmission system has its own hydraulic fan motor and hydraulic fan pump and hydraulic fan relay, the damage of these three components will lead to high temperature state of the hydraulic machine.

everyone should be the first to small excavator hydraulic machine high temperature common fault resolution should be in accordance with the simple to complex, from the outside to the inside, by visualization to the training of the way to carry out analysis of conflict, common fault analysis and solution process is as follows: 1, the first test gear oil heat pipe radiator is not too dirty, gear oil oil, oil, inspected the filter element, if there is any problem should be sorted out immediately, disassemble; 2, test the hydraulic transmission system hydraulic transmission system leakage is not many, if several oil seepage, should immediately replace the sealing and damaged components; 3, with a digital multimeter to test the path of the problem and sensor is not damaged, with temperature sensor table to detect the detailed gear oil temperature is not too high, all normal gear oil temperature in 40-60 degrees, hot days can do 60-80 degrees, if 90 degrees belong to the high temperature state; 4, all the above inspection is normal, should test the hydraulic transmission system pump oil this product, should be disassembled to test torsion spring is not broken, jammed and other problems, what problems must be sorted out or replaced; 5, test the small excavator hydraulic oil pump is not abnormal noise and discharge pipeline discharge residual oil is not too much, and its pressure is not too low, you can use the barometer to carry out the detection system software pressure;

6 above the test are all positive general norms, should test the car driving problems such as supercharger, high pressure water pump, fuel injectionPumps, etc.