Rotary drilling rig control rotary hydraulic circuit system
A technology for rotary drilling rigs and hydraulic circuits, applied in the direction of rotary drilling rigs, rotary drilling, mechanical equipment, etc., can solve the problems of low generalization, high technical difficulty, and replacement, and achieve high universality and low technical difficulty , easy to achieve effect
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Embodiment Construction
[0035] Examples such as Figure 4 As shown, a rotary drilling rig control rotary hydraulic circuit system includes a main pump 4, the main pump 4 is provided with a variable mechanism 4.1, the main pump 4 is connected with a main control valve 2 through a pipeline, and the main control A rotary spool 2.3 is installed in the valve 2, and the rotary spool 2.3 is respectively connected with the pilot handle 3 and the rotary motor 1 through the pipeline;
[0036] The main control valve 2 is also equipped with a relief valve 2.1, the oil inlet side of the relief valve 2.1 communicates with the rotary valve core 2.3 through the oil passage, and the oil inlet side of the relief valve 2.1 communicates with the variable mechanism 4.1 through the pipe The road connects.
[0037] A rotary deceleration device 5 is installed on the communication pipeline between the overflow valve 2.1 and the variable mechanism 4.1, and the rotary deceleration device 5 is communicated with a pilot oil inl...
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