Hydraulic system and rotary drilling rig

By designing a pilot valve and distribution valve group hydraulic system in the rotary drilling rig, precise control of movements such as walking and slewing is achieved, solving the problems of response lag and low integration of the rotary drilling rig, and improving construction efficiency and safety.

CN224413990UActive Publication Date: 2026-06-26SHANDONG EXPRESSWAY BRIDGE EQUIP ENG CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
SHANDONG EXPRESSWAY BRIDGE EQUIP ENG CO LTD
Filing Date
2025-08-21
Publication Date
2026-06-26

AI Technical Summary

Technical Problem

Existing rotary drilling rigs suffer from slow response and unstable operation during travel and rotation control, and their hydraulic systems have low integration, leading to construction safety hazards and low efficiency.

Method used

A hydraulic system was designed to achieve precise control of movements such as traveling, slewing, track extension and retraction, pressurization, luffing, and mast erection through the coordinated action of components such as pilot valves, main pumps, and main valves. A distribution valve group is used to rationally distribute and isolate the oil circuits, thereby improving the system integration and coordination of movements.

Benefits of technology

It improves the operability and working accuracy of rotary drilling rigs, with fast action response speed, reduces oil circuit interference, and improves construction efficiency and safety.

✦ Generated by Eureka AI based on patent content.

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    Figure CN224413990U_ABST
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Abstract

The utility model relates to technical field of hydraulic system provides a kind of hydraulic system and rotary drilling rig, and hydraulic system includes center rotary valve, walking control valve group, left handle control valve, rotary motor, walking oil circuit and rotary oil circuit, pilot oil in walking oil circuit flows into walking control valve group via pilot valve, and the pilot oil in walking control valve group flows into main valve push rod and moves, so that high-pressure oil in main pump flows into center rotary valve via main valve, and high-pressure oil in center rotary valve flows into walking motor;Pilot oil in rotary oil circuit flows into left handle control valve via pilot valve, and the pilot oil in left handle control valve flows into main valve push rod and moves, so that high-pressure oil in main pump flows into rotary motor via main valve;Rotary drilling rig, including above-mentioned hydraulic system.The overall structure of this hydraulic system is more compact, response speed is fast, action is stable, and the working efficiency of rotary drilling rig is improved.
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