Working principle of hydraulic anchor rod drilling truck for coal mines（haoyun）

The editor from Shandong Haoyun Heavy Industry Machinery Co., Ltd. will introduce the working principle of hydraulic anchor rod drilling vehicles used in coal mines.

The working principle of hydraulic anchor rod drilling vehicles used in coal mines involves several key technical links, including hydraulic power transmission, drilling, anchor rod installation, and grouting processes by Haoyun Heavy Industry. Below we will discuss in detail the main working principle of this device:

1、 Hydraulic power system

The heart of hydraulic anchor rod drilling vehicles used in coal mines is their powerful hydraulic power system. After the engine is started, it generates power and converts it into hydraulic energy through a hydraulic pump. Hydraulic oil circulates in a closed pipeline, passes through various valves and motors, converts hydraulic energy into mechanical energy, and drives various movements of the drilling rig.

1. Hydraulic pump: Driven by the engine, it converts mechanical energy into hydraulic energy.
2. Hydraulic cylinder and motor: Receive pressure oil from the hydraulic pump, convert it into linear or rotational motion, and drive the lifting of the drill arm, rotation of the drill bit, and forward and backward movement of the walking mechanism.

2、 Drilling process

1. Selection of drill rod and drill bit: Based on the different properties of the rock, select the appropriate length and diameter of the drill rod, and match it with the corresponding drill bit to achieve the best drilling effect.
2. Drilling operation: The operator starts the drill motor through the control panel, and the drill rotates at high speed. At the same time, the hydraulic cylinder pushes the drill rod forward, gradually penetrating into the rock to form a borehole.
3. Flushing fluid supply: During the drilling process, continuous supply of flushing fluid (usually water) is required to cool the drill bit and flush out the cut rock debris to prevent drilling jamming.

3、 Anchor rod installation

1. Anchor rod preparation: According to the design requirements, prepare anchor rods of corresponding length and type, and some anchor rods may require additional expansion sleeves or resin capsules at the end.
2. Installation of anchor rod: Insert the anchor rod into the drilled hole. If it is a self inserting anchor rod, installation can be completed at the same time as drilling.

4、 Grouting reinforcement (if necessary)

1. Preparation of grouting materials: Prepare appropriate grouting materials based on rock conditions and design requirements, commonly including cement-based grout or chemical resins.
2. Grouting operation: Inject grouting material into the pores through drill rods or specialized grouting pipes, fill the gaps around the anchor rod, and improve the overall stability and anchoring force of the rock.

The entire process of Haoyun Heavy Industry reflects the high efficiency, precision, and integrated operation capability of hydraulic anchor rod drilling vehicles. It integrates multiple steps such as traditional manual drilling, anchor rod installation, and grouting on one platform, greatly improving the efficiency and safety of coal mine roadway support operations. Through the application of the above working principles, hydraulic anchor drilling vehicles play a crucial role in coal mining, effectively promoting the rapid construction and maintenance of tunnels and ensuring the smooth progress of coal mine production.