2018-12-31
Second hand excavator marketChoosing a good device, as mentioned above, the tips for checking the engine, hydraulic pump, and distribution valve are not complicated. By careful observation, problems and faults can be basically identified. This mainly talks about the rotating system and basic knowledge and troubleshooting methods. The structure of the rotating system is not complex, and it has not been damaged. The failure rate in harsh use environments is extremely low, and problems that may occur under long-term wear and tear are likely to occur on the rotating gears.
The largest component of the overall structure of the rotating system mainly relies on the rotational output power and the rotating hardware disk gears. Here, relying solely on visual observation can only be studied through appearance to determine whether maintenance and replacement of worn parts have been carried out. The maintenance of the rotating system is also an essential part of daily use. In addition to the normal maintenance of the rotating motor, the most critical aspect is the periodic lubrication and protection of the rotating drive gear. The construction environment of excavators generally has a lot of dust and soil, and there will be a large amount of soil and sand mixed in on the outside and bottom of the chassis connecting gears. Over time, it can cause severe wear and even require the replacement of gear parts. Although the problem is not serious, replacement requires a lot of time and labor. Simple replacement requires the upper body of the excavator to be connected toThe X frame needs to be separated before replacement can be carried out. Not to mention, if the construction site is remote and the replacement conditions are harsh, it will be very troublesome.
Used excavatorThe chassis inspection requires conducting uneven speed tests in an open area. First, slowly rotate and carefully observe whether there are any abnormal noises in the rotating parts. During high-speed rotation testing, check for any irregular sounds in the rotating parts and motor components. Especially in testing, indirect emergency stop of the model is required due to different excavator settings. Most excavators have a certain buffering and deceleration effect to reduce losses. And the emergency stop and turn situations of old devices are also very common, requiring a certain understanding of the model. If the two tests are qualified and the equipment is slightly raised, the model should be fine tuned before and after to check whether there is a gap between the film gears. Two or more professionals need to observe from multiple angles to eliminate the problem. Do not forcefully rotate without twisting during testing, as it may cause cracking and damage between gears.
If there are no major issues in the above tests, there may be a simple evaluation of the price of second-hand excavators based on actual conditions and wear and tear. Daily maintenance can greatly reduce the occurrence of failure rates. Before making a purchase, any buyer must consult with Huacheng's professional technical engineers for consultation and maintenance, and have Huacheng provide a daily maintenance summary to avoid any perceived faults caused by negligence.
Article from:www.shcteng.com Huacheng Second hand Excavator Network
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