Anti-kick device for rock drill and rock drill

By integrating a reverse-strike device into the rock drill and using hydraulic control to achieve rapid reversal of the impact mechanism, the problems of low efficiency and poor safety in handling stuck drill bits in rock drills are solved. This enables efficient and safe handling of stuck drill bit faults, adapts to various specifications of drill rods, and extends the equipment's lifespan.

CN122304648APending Publication Date: 2026-06-30ZHANGJIAKOU XUANHUA HUATAI MINING & METALLURGIC MACHINERY
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
ZHANGJIAKOU XUANHUA HUATAI MINING & METALLURGIC MACHINERY
Filing Date
2026-06-02
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

Existing rock drills are inefficient in handling stuck drill bits, manual handling is inefficient and dangerous, and external equipment is difficult to use and limited by narrow working spaces.

Method used

Design a reverse-strike device for a rock drill, including a mounting base, a drill bit, an impact mechanism, and a reversing mechanism. The impact mechanism is hydraulically controlled to quickly change direction. It is integrated into the rock drill head and can quickly switch to reverse-strike mode when the drill bit is stuck, continuously impacting the drill rod to release the jam.

Benefits of technology

It improves the efficiency of handling drill bit malfunctions, avoids the safety risks of manual hammering, reduces equipment damage, adapts to various specifications of drill bits, enhances versatility and safety, and extends equipment life.

✦ Generated by Eureka AI based on patent content.

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Abstract

This application provides a reverse-strike device for a rock drill and a rock drill, belonging to the technical field of rock drilling equipment. It includes a mounting base, a drill bit, an impact mechanism, and a reversing mechanism. The mounting base has an internal hollow structure and is fixed to the rock drill head. The drill bit slides axially through the mounting base, with one end connected to a hydraulic motor and the other end detachably connected to the drill rod. The exposed section coaxially fixes the reverse-strike ring. The impact mechanism is located inside the mounting base and sleeved on the drill bit, facing the rock drill side and can connect to the reverse-strike ring. The reversing mechanism is located on the mounting base and controls the hydraulic oil flow of the impact mechanism through an oil circuit to achieve rapid reversal. During normal drilling, the reversing mechanism controls the impact mechanism to remain stationary and avoid impact; when the drill bit gets stuck, it switches to a reverse-strike state that continuously impacts the reverse-strike ring. This device can quickly resolve drill bit jamming, protect the drill rod and the rock drill head, and does not interfere with drilling during normal operation. It has a compact structure, is easy to operate, and can improve rock drilling efficiency and equipment lifespan.
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