Hybrid rotary drilling rig and its hydraulic system, and control methods of the hydraulic system

By using a hybrid power system and direct-drive motor technology, the problems of high energy consumption, complex structure, and high failure rate of the hydraulic system of rotary drilling rigs have been solved, realizing efficient and low-energy operation of rotary drilling rigs.

CN115559955BActive Publication Date: 2026-06-30SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Patents(China)
Current Assignee / Owner
SHANGHAI ZOOMLION HEAVY IND PILING MACHINERYCO
Filing Date
2022-10-28
Publication Date
2026-06-30

AI Technical Summary

Technical Problem

The existing hydraulic systems of rotary drilling rigs suffer from problems such as large fluctuations in engine power, high energy consumption, complex structure, high failure rate, and poor flexibility.

Method used

The system employs a hybrid power system, which includes an engine, generator, motor set, main pump, auxiliary pump, main hydraulic system, auxiliary hydraulic system, main winch, power head, and control components. Power distribution and control are achieved by directly driving the main winch and power head with the motor, combined with the motor controller and operating handle.

Benefits of technology

The engine always operates in the optimal economic range, with low energy consumption, simple structure, low failure rate, and easy operation, which improves the working efficiency and flexibility of the rotary drilling rig.

✦ Generated by Eureka AI based on patent content.

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    Figure CN115559955B_ABST
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Abstract

A hydraulic system for a hybrid rotary drilling rig includes an engine, a generator, a motor set, a main pump, an auxiliary pump, a main hydraulic system, an auxiliary hydraulic system, a main winch, a power head, and a control component. The motor set includes a main pump motor, an auxiliary pump motor, a main winch motor, a first power head motor, and a second power head motor, all electrically connected to the generator. The main pump motor drives the main pump, the auxiliary pump motor drives the auxiliary pump, the main winch motor drives the main winch, and the first and second power head motors drive the power head. The main pump is connected to the main hydraulic system, and the auxiliary pump is connected to the auxiliary hydraulic system. The motor set, the main hydraulic system, and the auxiliary hydraulic system are all signal-connected to the control component. The control component sends control signals to the motor set, the main hydraulic system, and the auxiliary hydraulic system to cause the actuators in the rotary drilling rig to perform corresponding actions. This invention also relates to a control method for the hydraulic system of a hybrid rotary drilling rig and to the hybrid rotary drilling rig itself.
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