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Main components and functions of rotary drilling rig

02-13 10:26 News 18

Main components and functions of rotary drilling rig:

Rotary drilling rig is a machine for drilling piles. This is a picture of a pile rig.

(1) Engine

The main function of the engine is to provide power for the rotary drilling rig. Its power is diesel. The engine transmits power to the hydraulic pump through the intermediate coupling. Common sense tells us that if the fuel burns spontaneously in the air, the energy it emits is not enough to drive the rotary excavator. To solve this problem, we need to atomize the diesel and then compress it to make it burn under high pressure. That way you can get high power instantly and drive its accessory devices. We simply divide the engine working process into four stages, that is, four strokes (intake, compression, work, and exhaust).

Rotary drilling rig engine picture

(2) Hydraulic pump

A hydraulic pump is a hydraulic power component, which is an energy conversion device that converts mechanical energy input by an electric motor (or other prime mover) into hydraulic energy. Its role is to provide pressure oil to the rotary drilling rig hydraulic system.

Rotary drilling rig hydraulic pump picture

(3) Hydraulic motor

Hydraulic motor is a hydraulic actuator that performs continuous rotary motion and outputs torque. It is an energy conversion device that converts hydraulic energy provided by a hydraulic pump into mechanical energy.

Rotary drilling rig hydraulic motor picture

(4) Control valve

The hydraulic components that control or adjust the flow and pressure of the working fluid and change the liquid flow channel to change the direction of the liquid are called hydraulic control valves. The hydraulic control valve can perform operations such as opening, stopping and reversing the hydraulic actuator, adjusting its movement speed and output torque (or output force), and implementing safety protection for the hydraulic transmission system or certain hydraulic components.

Rotary drilling rig control valve picture

(5) Hydraulic cylinder

Hydraulic cylinder is also called hydraulic cylinder or power cylinder, usually referred to as oil cylinder for short. It is a hydraulic actuator that realizes reciprocating motion and less than 360-degree swing motion in a hydraulic transmission system. It has the advantages of simple structure, reliable work, easy manufacture, and convenient use and maintenance. It is widely used in various departments of industrial production. Among the construction machinery, the most common are the shovel loading mechanism of the loader, the lifting mechanism of the crane, and the working mechanism of the excavator. The hydraulic oil cylinder plays a vital role in the working process of the rotary drilling rig. It is mainly used to adjust the angle of the luffing and play a pressure role when drilling.

Rotary drilling rig hydraulic cylinder picture

(6) Solenoid valve

For some highly automated engineering machinery, such as full hydraulic rotary drilling rigs, etc., it is often required to continuously and continuously control the parameters of the system-pressure and flow. Electro-hydraulic proportional valves are a typical type of control that can meet this requirement. valve.

Electro-hydraulic proportional control valve, also called electromagnetic proportional control valve, is usually called proportional valve, which can continuously and proportionally control the flow pressure and direction of the hydraulic system according to the input signal (usually current or voltage).

Electro-hydraulic proportional valves can be divided into four categories according to their uses, namely proportional pressure valves, proportional flow valves, proportional directional valves and proportional composite valves. The electro-hydraulic proportional valve is composed of two parts, namely the hydraulic valve body and the electro-mechanical proportional conversion device. The latter continuously converts the electrical signal into mechanical force and displacement output in proportion. The former accepts this mechanical force and displacement. Continuously output pressure or flow.

Rotary drilling rig fluid solenoid valve picture

(7) Pilot operated valve

The pilot valve controls the pilot oil pressure, and the pilot oil pressure controls the valve spool. The machine is equipped with two types of standard pilot valves, each with four ports. One is for work device / slewing function control; the other is for walking function control. The choice of model has two ports.

Rotary drilling rig pilot control valve picture

(8) Fuel tank

Structural characteristics of the fuel tank: it must have sufficient effective volume. The effective volume of the fuel tank refers to the volume of the fuel tank when the liquid height is 80% of the fuel tank height. When the hydraulic system of the rotary drilling rig stops working, it must contain all the oil returned by the system It also has the function of sedimentation of impurities, separation of water, gas and heat dissipation. Therefore, the effective volume of the oil tank of the fixed equipment should be greater than the drainage volume of the hydraulic pump for 3 minutes, and the effective volume of the oil tank of the walking device should be greater than the drainage volume of the pump by 1.5 to 2 minutes.

Rotary drilling rig hydraulic tank picture

Only when the operator is proficient in the main components and functions of the rotary drilling rig can he understand the working principle of the rotary drilling rig more clearly, which is helpful to improve the working efficiency of the rotary drilling rig.

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