Crawler cranes are complex, heavy-lift, long-reach lifting equipment that operate across many challenging terrains, such as oil fields, high-speed rail projects, large ports, and nuclear power construction sites. [365 Construction Machinery Procurement Network www.gj.cago365.com/products/] Because of their complex structure, which covers electrical and hydraulic systems, crawler crane commissioning cycles are long and testing work is quite tedious; troubleshooting electrical faults has never been an easy task.

　　In crawler crane testing, the difficulty is high, and detailed issues account for a large proportion of the work and are not easily found. Take the testing of electrical faults in the boom of a crawler crane: the boom consists of the main boom, tower boom, mast, and other parts. The long boom connected to the crawler crane host tower is over 100 meters high, and the wiring harness wrapped around the boom is also over 100 meters long, connected by 5-6 connectors and controlling the safety devices of the crawler crane host. When a fault occurs in the tested harness, locating the fault point is very difficult. It requires two employees at both ends of the boom communicating by mobile phone, checking and troubleshooting at the same time. This takes a long time and seriously affects inspection efficiency. Testing the harness requires relevant electrical knowledge; in the workshop, only commissioning electricians can operate it, so staff assignment is somewhat limited.

 

Dong Bing is commissioning the new electrical testing tooling for crawler cranes

　　Faced with this long-standing problem that affects production work, workshop field engineer Dong Bing did not back down. Relying on his rich work experience and his dedication to and passion for crawler crane electrical expertise, he carefully observed each fault point and studied and summarized them. Once, his home broadband network failed. He saw the network service technician take out a network cable fault detection tool; by simply connecting the tool to both ends of the network cable, the indicator lights on the tool immediately showed clearly whether each wire was normal. Dong Bing suddenly saw the answer: wasn't this exactly what we were looking for? The boom harness on crawler crane products has a similar structure. If this tool could be modified and used for boom harness testing, the problem would be solved.

　　Dong Bing acted immediately. He bought a network cable detection tool on the market. Through comparison, he found that the core wires of the crawler crane boom harness were more numerous than those of a network cable and that the connectors were different, so he immediately made adapter connectors to join them. After the improvement was completed, the network cable detection tool was split into two and connected to both ends of the crawler crane boom harness. This made it possible to quickly detect whether the boom harness was continuous and to pinpoint fault points accurately. In one pass, it could test whether 16 harness wires in the crawler crane boom were qualified, meeting the boom harness testing requirements for QUY650T and lower-tonnage products. Thus, a tooling dedicated to testing crawler crane boom harnesses was completed.

　　With the crawler crane boom harness testing tooling, what previously required two employees and two hours to complete can now be done by one person in eight minutes, greatly reducing labor intensity and work time. The tooling is simple and quick to operate and versatile, ensuring consistency in testing standards. The problem of different wiring methods for products in the same series no longer occurs, and it is no longer limited to workshop commissioning electricians; main machine operators can also use it with ease.

　　Creativity comes from practice. In our work, there is no shortage of potential innovation points, large and small. As long as we observe carefully, give play to our own initiative, and break conventional thinking, we will reduce work intensity, improve efficiency, and make daily work smoother and more efficient!