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  • SHANDONG HENGWANG GROUP

  •  [Shandong,China]
  • Business Type:Manufacturer
  • Main Mark: Africa , Americas , Asia , Caribbean , East Europe , Europe , Middle East , North Europe , Oceania , Other Markets , West Europe , Worldwide
  • Exporter:61% - 70%
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SHANDONG HENGWANG GROUP

Home > News > [Full Hydraulic Drilling Rig] Technical Q & A (2)
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[Full Hydraulic Drilling Rig] Technical Q & A (2)

A: The hydraulic control valve is used to control or regulate the pressure, flow and direction of the flow in the hydraulic system to meet the force or torque, operating speed and direction of motion of the actuator output.

There are many types of control valves, and their common features are:

1 is structurally composed of a valve body, a valve core and an operation control portion.

2 In the work, the flow or flow of the liquid flow is changed by changing the on-off relationship of the valve port or the flow area of the valve port.

3 The smaller the flow area of the valve hole, the higher the flow rate, the larger the pressure drop, and the pressure difference before and after the valve hole. The working principle of various pressure control valves is to balance the oil pressure on the spool with the spring force at different positions to control the flow area of the valve port to achieve various pressure control. In the use of various types of valves, the problems are solved according to the problems reflected by the oil circuit system, and will not be described here.


Answer: The function of the rotary and chuck oil circuit board valves:
1 Through the switching action of the control valve, the pinch linkage function is realized;
2 Through the switching action of the control valve, the joint action of drilling and lifting is realized.

The function of the auxiliary Pump oil plate valve:

1 through the interaction of the control valve and the relief relief valve to achieve pressurized overflow feed;
2 Through the interaction of the control valve and the pressure reducing valve, the chuck pressurization and decompression feeding are realized.

A: The independent function of the main pump oil circuit:

In the working state, the independent function of the main pump oil circuit is to provide motor rotation.

Independent function of the auxiliary pump oil circuit:

In the working state, the independent function of the auxiliary pump oil passage is to provide the feeding and pulling action of the cylinder, and at the same time, the chuck pressure is completed under the cooperation of the various functional valves.

Main and auxiliary pump confluence:

When the rotation stops and the main pump oil circuit is in the return to zero state, the main and auxiliary pump oil passages merge to realize the fast tripping working state. At the same time, the interlocking working state of the chuck and the gripper is realized under the cooperation of the functional valves.

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