Design Difficulty

· The initial pulling force is precisely controlled, but the pulling force value is prone to deviation
· The hook is subjected to concentrated force and is prone to breakage and deformation
· The circle distance and free length need to match the installation stroke
· High reciprocating operating conditions have high requirements for fatigue life design
· The forming of irregular-shaped hooks is complex and has high requirements for molds and processes
· Improper matching of material elasticity and wire diameter can lead to a decrease in tensile force

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