What is the reason why the excavator loses its arm?
Recently, one of the hot topics in the field of construction machinery is the problem of excavator arm failure. Many excavator operators and maintenance masters discussed this phenomenon on social media and forums, which attracted widespread attention. This article will combine the hot content of the entire network in the past 10 days, analyze the common reasons for excavator failure, and provide structured data for reference.
1. Common reasons why excavators lose their arms
Excavator arm drop usually refers to the phenomenon that the excavator arm suddenly sag or cannot maintain a fixed position during operation. The following are several reasons that may cause the excavator to lose its arm:
| Cause classification | Specific performance | solution |
|---|---|---|
| Hydraulic system failure | Hydraulic oil leakage, insufficient hydraulic pump pressure | Check the oil circuit, replace seals or hydraulic pump |
| Internal leakage of oil cylinder | Cylinder piston seal ring wear | Replace the cylinder sealing ring or the entire cylinder |
| Control valve failure | Valve core stuck, valve body worn | Clean or replace control valve |
| Overload protection trigger | Exceeding rated workload | Reduce load or check protection system |
| Electrical system failure | Sensor failure, circuit aging | Repair circuit and replace sensor |
2. Recent hot discussions
According to the monitoring of network hot spots in the past 10 days, the issue of excavator neglect has triggered heated discussions on the following platforms:
| platform | Discussion popularity | Main point |
|---|---|---|
| Zhihu | high | The Importance of Hydraulic System Maintenance |
| Douyin | extremely high | On-site maintenance video sharing |
| Station B | in | Technical principles explanation video |
| Tieba | high | Troubleshooting experience exchange |
3. Measures to prevent the excavator from losing control
In response to the problem of excavator arm dropping, it is recommended to take the following preventive measures:
1.Regular maintenance of hydraulic system:Replace the hydraulic oil and filter element every 500 working hours, and check the sealing of the oil circuit.
2.Standard operation:Avoid overload operations and reduce the impact of sudden starts and stops on the hydraulic system.
3.Timely maintenance:When abnormal movement of the boom is found, stop the machine immediately for inspection to prevent small problems from turning into major failures.
4.Professional training:Operators should receive formal training on equipment performance and maintenance requirements.
4. Analysis of typical fault cases
The following are statistics on typical failure cases recently shared on the Internet:
| Case number | Model | Service life | Cause of failure | Maintenance cost (yuan) |
|---|---|---|---|---|
| Case-001 | 20 tons of a certain brand | 3 years | Main control valve damaged | 4800 |
| Case-002 | 30 tons of a certain brand | 5 years | Internal leakage of oil cylinder | 3200 |
| Case-003 | 15 tons of a certain brand | 2 years | Hydraulic pump failure | 6500 |
5. Suggestions from industry experts
Many construction machinery experts emphasized in recent interviews:
1.Choose original accessories:Priority will be given to original accessories when repairing to ensure matching and durability.
2.Create a maintenance file:Record every repair and replacement parts to make it easy to track equipment status.
3.Pay attention to new technologies:New excavators mostly use intelligent hydraulic systems that can monitor pressure status in real time.
4.Seasonal maintenance:Pay special attention to the viscosity changes of hydraulic oil during the change of seasons and replace it in time.
It can be seen from the above analysis and data that the problem of excavator arm drop is mostly caused by hydraulic system failure. Timely maintenance and standardized operation are the key to prevention. Hopefully this article will help excavator operators and maintenance technicians better understand and deal with this problem.
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