Mechanical Structure of a High-Speed ​​Hydraulic Impact Device Based on Bistable Valveless Control

Abstract

This invention discloses a mechanical structure for a high-speed hydraulic impact device based on bistable valveless control, including an impact actuator, a bistable valveless flow control structure, an integrated damping orifice combination buffer structure, and a safety assembly. The impact actuator comprises a cylinder body, a piston rod, a base, and a trigger assembly. The bistable valveless flow control structure is formed by the cooperation of a uniformly distributed arcuate groove at the piston rod end, a circumferential groove in the trigger sleeve, and the main oil inlet of the base. The integrated damping orifice combination buffer structure features a rectangular through-hole and a circular through-hole damping orifice in the latter half of the cylinder stroke. The piston rod end employs a gap seal. This structure reduces kinetic energy loss through lightweight design, achieves controllable pressure increase and buffering in the rod chamber through the stepped closure of the damping orifice, supports high-speed motion through the gap seal, and forms bistable valveless flow control through the cooperation of the trigger sleeve and piston rod groove, while preventing the piston rod from falling off during non-operational states.

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