The stick (dipper) is a critical structural component in hydraulic excavators that connects the boom to the bucket, enabling precise digging and material handling operations.
The stick, also known as the dipper or arm, is a primary structural member in hydraulic excavator boom assemblies. It functions as the intermediate linkage between the boom (main arm) and the bucket attachment, transmitting hydraulic forces to control digging depth, reach, and bucket orientation. This component is subjected to complex dynamic loads including bending, torsion, and compression during excavation cycles.
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The boom is the primary lifting arm attached to the excavator's house, while the stick (dipper) is the secondary arm connecting the boom to the bucket. The boom provides vertical lift capacity, while the stick controls digging depth and horizontal reach.
Visual inspections should occur daily, with detailed structural inspections every 250-500 operating hours. Critical areas include pin connections, weld seams, and stress concentration zones. Ultrasonic testing is recommended annually or after 2,000 operating hours.
Fatigue cracking at stress concentration points, pin bore wear and elongation, hydraulic cylinder mounting point failures, and corrosion in harsh environments. Proper maintenance and load management significantly extend component lifespan.
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CNFX 制造商资料、技术分类、公开产品信息和持续合理性检查。
说明目标数量、应用场景、交期和关键技术要求，用于准备 RFQ 或供应商评估。