Why does the excavator hold up? Analysis and solutions of hot topics on the entire network in the past 10 days
Recently, the discussion on the problem of excavator holding has become increasingly popular in the field of construction machinery. This article combines hot topics and hot content on the Internet in the past 10 days to systematically analyze the common reasons why excavators are stuck and provide structured data reference.
1. What is the phenomenon of excavator holding back?
Excavator stalling refers to the phenomenon that the engine speed drops sharply or even stalls when the load suddenly increases. According to the online discussion data in the past 10 days, the search volume of the keyword "holding the car" increased by 23% month-on-month, becoming the top three topics in construction machinery maintenance.
| time period | search volume | month-on-month growth |
|---|---|---|
| last 7 days | 8,542 times | +23% |
| Same period last month | 6,945 times | - |
2. Analysis of the main reasons for holding back the car (high frequency discussion points in the past 10 days)
| Cause classification | Proportion | Typical symptoms |
|---|---|---|
| Hydraulic system problems | 42% | The main pump pressure is abnormal and the valve group is stuck. |
| engine failure | 31% | Insufficient fuel supply, turbocharger leakage |
| Improper operation | 17% | Throttle control error during compound action |
| Other mechanical failures | 10% | The slewing motor is overloaded and the travel reducer is stuck. |
3. In-depth analysis of hydraulic system problems (the focus of hot discussion in the past three days)
According to the latest discussion on the Construction Machinery Forum, the vehicle holding problems caused by the hydraulic system mainly focus on the following aspects:
| specific reasons | Detection method | solution |
|---|---|---|
| Main pump regulator failure | Pressure gauge detects outlet pressure | Replace adjuster spring |
| Insufficient pilot pressure | Measure pilot oil line pressure | Clean pilot filter element |
| Multi-way valve stuck | Operating handle strength test | Disassemble the valve body for cleaning |
4. Engine-related car holding issues (high-frequency words in this week’s technology post)
The number of discussions about engine problems caused by vehicle stagnation has increased significantly in cold areas (+35%), mainly involving:
| Fault type | winter incidence | Precautions |
|---|---|---|
| Fuel filter clogged | 58% | Shorten replacement cycle |
| Turbocharger leaking | 27% | Check the air intake pipe sealing |
| EGR valve failure | 15% | Clean the valve body regularly |
5. Operation precautions (key points of popular teaching videos in the past 10 days)
Data from construction machinery videos on Douyin, Kuaishou and other platforms show that the playback volume of operating instructional content has increased by 40%. Among them, tips on avoiding holding a car in a car include:
1.Compound motion control: Prevent the boom from lifting and rotating at full load at the same time.
2.Throttle matching principle: Increase engine speed in advance during heavy-load operation
3.preventive maintenance: Clean the hydraulic tank breather every 500 hours
6. Latest maintenance case reference (from BBS hot posts)
| Device model | Fault phenomenon | final solution |
|---|---|---|
| Komatsu PC220-8 | Holding the truck while digging with bucket | Replace main pump servo piston |
| Carter 320D | Rotate + raise the arm simultaneously to turn off the flame | Repair pilot pressure sensor |
| SANY SY215C | It is easy to hold the car in cold conditions | Upgrade ECU control program |
7. Preventive maintenance recommendations (latest opinions from industry experts)
According to the latest maintenance guide released by the WeChat public account "Construction Machinery Home":
1.daily inspection: Fuel moisture content, hydraulic oil level
2.Must do every week: Clean the outer surface of the cooler
3.monthly highlights: Test pilot pressure value
4.Must be inspected every quarter: Engine air intake system sealing
From the above structured data analysis, it can be seen that the problem of excavator holding back needs to be comprehensively judged from multiple dimensions such as hydraulic pressure, engine, and operation. It is recommended that machine owners establish complete equipment health files and conduct regular professional testing to effectively prevent the phenomenon of vehicle holding.
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