What causes the excavator to tremble?
Recently, discussions about construction machinery failures have become increasingly popular on major forums and social media. In particular, the issue of "excavator shaking" has become the focus of attention among practitioners. This article will combine the hot topics and hot content on the Internet in the past 10 days, systematically analyze the common causes of excavator trembling, and provide structured data for readers' reference.
1. Common causes of excavator shaking
Excavator shaking is usually caused by mechanical failure, hydraulic system problems or improper operation. The following are several types of reasons that are frequently discussed:
| Cause classification | Specific performance | Proportion (forum discussion statistics) |
|---|---|---|
| Hydraulic system failure | Unstable oil pressure and oil contamination | 42% |
| Mechanical parts wear | Loose tracks and damaged slewing bearings | 35% |
| Operational issues | Improper throttle control and overload operation | 15% |
| Electrical system abnormality | Sensor failure, poor circuit contact | 8% |
2. In-depth analysis of hydraulic system faults
Hydraulic system problems account for the highest proportion of excavator shaking cases, and related technical posts have been read more than 500,000 times in the past 10 days. The main performances are as follows:
| Fault type | Detection method | solution |
|---|---|---|
| Hydraulic oil contamination | Observe oil color/detect particles | Replace filter element and clean system |
| Main pump pressure fluctuation | Pressure gauge test | Adjust the pressure valve or replace the pump body |
| Control valve stuck | Joystick feedback test | Disassemble, clean or replace the valve core |
3. Sharing of recent hot cases
The "excavator dancing" incident that went viral on a certain short video platform (viewed 8.2 million+ times) was actually analyzed by technology to be an abnormality in the control system caused by excessive hydraulic oil temperature. Another case of "trembling excavation" hotly discussed by netizens was ultimately found to be caused by wear of the gears of the swing motor.
4. Prevention and maintenance suggestions
According to the latest maintenance guidelines issued by the Construction Machinery Association:
| maintenance items | cycle | key indicators |
|---|---|---|
| Hydraulic oil testing | every 500 hours | Moisture content≤0.1% |
| Track tension check | daily | Droop amount 30-50mm |
| Electrical wiring inspection | every 300 hours | Insulation resistance ≥1MΩ |
5. Expert opinions
Well-known construction machinery maintenance expert @ Hydraulic Laozhou pointed out in the live broadcast: "Recently, there have been many cases of shivering caused by inappropriate viscosity of hydraulic oil in areas with large temperature differences. It is recommended to replace the hydraulic oil with the appropriate grade according to the season." This view received 32,000 likes.
6. Answers to users’ high-frequency questions
Q: Is it normal to tremble during a cold start?
A: Brief jitter is normal. If it lasts for more than 2 minutes, check the preheating system.
Q: Vibration occurs after replacing the hydraulic oil?
A: It may be that the oil model does not match or the system is not completely exhausted and needs to be drained again.
From the above analysis, it can be seen that the trembling problem of the excavator needs to be systematically investigated based on the specific performance. It is recommended that the machine owner establish a complete maintenance file and stop the machine for maintenance in time when encountering persistent vibration to avoid causing greater losses.
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