In the operation of በጭነት መኪና የተገጠመ ክሬንኤስ, የዊንች ብልሽቶች ከፍተኛ ተግዳሮቶችን ሊያስከትሉ እና መደበኛ የማንሳት ሂደቱን ሊያበላሹ ይችላሉ. እነዚህን ውድቀቶች በትክክል መለየት እና መመርመር መቻል በጊዜው ለመጠገን እና የእረፍት ጊዜን ለመቀነስ ወሳኝ ነው. በዚህ ጽሑፍ ውስጥ, we will explore in detail the skills and methods for identifying በጭነት መኪና የተገጠመ ክሬን failures specifically related to winch malfunctions.
Imagine a scenario where a በጭነት መኪና የተገጠመ ክሬን owner is in the middle of a lifting operation. Suddenly, the winch motor stops rotating, and the crane is unable to lift or lower the load. ቢሆንም, other hydraulic mechanisms of the crane are functioning normally. This unexpected situation can be extremely perplexing and frustrating for the operator. The first step in troubleshooting is to carefully observe and analyze the symptoms. በዚህ ጉዳይ ላይ, we notice that the pressure gauge shows 0 when the lifting mechanism handle is operated. This is a key indication that something is amiss within the hydraulic system specifically related to the winch.
To begin our diagnosis, we can rule out the possibility of a hydraulic pump malfunction. If the hydraulic pump were faulty, it would likely affect the operation of multiple hydraulic mechanisms, not just the winch. ከዚህም በላይ, when operating to the position where the two pumps are combined, if the winch were experiencing a problem due to the pump, it would typically slow down rather than completely stop working. Since other hydraulic mechanisms are working properly and the winch stops abruptly with no pressure indication, we can focus our attention on the winch circuit and its components.
The next step is to examine the relief valve of the winch circuit. The relief valve plays a crucial role in regulating the pressure within the hydraulic system. If it malfunctions, it can cause a loss of pressure and prevent the winch from operating correctly. We remove the main relief valve and conduct a thorough inspection. After cleaning and reinstalling it, if the fault persists, we need to dig deeper.
It’s important to note that some በጭነት መኪና የተገጠመ ክሬንs have a remotely pilot-controlled main relief valve. This means that an additional component, such as an overwind solenoid valve, can influence the operation of the relief valve. When the overwind solenoid valve is energized, it can cause the relief valve to open prematurely, resulting in unloading and a loss of pressure in the winch circuit.
To test this possibility, we unplug the plug of the overwind solenoid valve. ቢሆንም, even after doing so, the fault still persists. This indicates that the problem lies elsewhere within the solenoid valve or its associated components. በዚህ ጊዜ, we take a more direct approach by drawing a constant power from the power supply and using it to directly push the solenoid valve. When we do this, we notice that the indicator light on the solenoid valve is on, but there is no audible clicking sound of the solenoid valve operating normally. This is a strong indication that there is an internal problem with the solenoid valve.
To further investigate, we completely remove and disassemble the solenoid valve. Upon inspection, we discover that the return spring of the solenoid valve is broken. This is a critical finding, as the broken spring causes the solenoid valve to malfunction. Under the influence of gravity, the iron core of the solenoid valve pushes the reversing valve stem to reverse its position. በውጤቱም, the winch circuit loses pressure, and the winch motor is unable to operate.
Once we have identified the root cause of the problem, the solution becomes clear. We replace the broken return spring with a new one of the appropriate specification. After reassembling the solenoid valve and reinstalling it in the በጭነት መኪና የተገጠመ ክሬን, we test the winch operation. To our relief, the fault phenomenon is eliminated, and the winch is once again able to lift and lower loads smoothly.
በማጠቃለያው, when dealing with winch motor malfunctions in በጭነት መኪና የተገጠመ ክሬንኤስ, a systematic and methodical approach is essential. By carefully observing the symptoms, ruling out potential causes one by one, and conducting detailed inspections and tests of the relevant components, we can accurately identify the source of the problem. With the right skills and knowledge, even complex winch failures can be diagnosed and resolved, ensuring the reliable and efficient operation of the በጭነት መኪና የተገጠመ ክሬን. Remember, patience and attention to detail are key when troubleshooting any mechanical issue.
