The reason for the breakage of the concrete pump truck boom is described in detail in this small series. When the concrete pump truck is in construction, the fabric arm is unfolded, the cloth booms and the leg hydraulic cylinders are locked, and the entire fabric arm system forms a cantilever beam structure. The commercial concrete pump truck boom adopts an R-shaped structure, and there are three or four-section arms behind the two arm arms, wherein the three-section arms also adopt a bending structure, and the two arm arms are also subjected to a certain torsional load.
The pin and the copper sleeve are worn to cause the impact force on the tail of the fabric arm. When the test is found, three pins and six copper sleeves are worn, and the wear of the two pins and the copper sleeve of the same group are inconsistent;
There is stress concentration at the root sleeve of the two arms. According to the previous 37m similar boom type concrete pump truck, the root of the arm is qualitatively analyzed, and the underside of the sleeve has obvious stress concentration. The high-strength plate as the boom plate has good toughness and plasticity, and the initial crack tip yields in a small area under the action of high stress concentration zone and residual force. In this case, the action of the alternating load causes the microcracks to gradually expand;
The boom type pump truck basically operates in an open environment, causing oxidative corrosion due to long-term erosion of corrosive medium such as hydrogen sulfide in the rain and air, and the local strength is decreased;
Konecra Group specializes in the manufacture of concrete pumping equipment for more than 20 years. The concrete equipment is of various types and high quality. The products are exported to more than 30 countries and regions such as Europe, Asia, Southeast Asia, South America, Africa and Oceania. Adhering to the "customer first principle", we are committed to providing customers with quality pre-sales, sales, and after-sales services, so that our concrete equipment will provide customers with an excellent construction experience. Strong production, management and service teams escort the customer's concrete equipment.
Through the above introduction, I believe that everyone knows about the reasons for the continued analysis of the accidents such as the breakage of the concrete pump truck boom. Thank you for your attention to the official website of Qingdao Konyle Group Co., Ltd. www.conele88.com.