The pentagonal boom section has good neutrality and high cross-section bending resistance. The single-cylinder cables expand and contract synchronously, and the boom expansion and contraction are efficient and reliable. The automatic hook retracting device in the final position saves preparation time before and after operation, prevents the hook from swinging, and improves driving safety. The throttle linkage control system configuration greatly improves the efficiency of hoisting operations.

An over-winding protection device is adopted to prevent safety hazards caused by wire rope breakage.