How does the hydraulic anchor rod drilling truck work in coal mines（haoyun）

The editor of Shandong Haoyun Heavy Industry Machinery Co., Ltd. will provide the following information on how hydraulic anchor rod drilling vehicles work in coal mines.

The operation process of hydraulic anchor rod drilling vehicles used in coal mines is quite detailed in practical work, involving multiple steps and technical details. Below, Haoyun Heavy Industry will describe in detail how it performs anchor rod support work in coal mines:

1、 Preparation stage:

1. Equipment positioning: Firstly, the hydraulic anchor drilling truck needs to be transported to the designated work site, usually the roadway section to be supported. By using its own walking system or auxiliary traction to reach the predetermined position.
2. On site investigation: Before starting the operation, technicians will evaluate the specific condition of the tunnel, including factors such as rock type, strength, tunnel width, and height, to determine the drilling layout plan and anchor parameters.

2、 Drilling stage:

1. Positioning drilling: The operator adjusts the angle and position of the drill frame based on pre-set coordinates to align the drill bit with the target point. This step may require the use of laser positioning or other guiding tools to ensure accuracy.
2. Start drilling: Once the positioning is completed, the operator starts the hydraulic motor on the drilling rig, transmits power to the drill bit through the drill rod, and begins drilling. During the drilling process, flushing water is continuously sprayed to clean the drill cuttings and cool the drill bit.
3. Monitoring progress: The drilling depth needs to meet the design requirements. During this period, the operator must always pay attention to changes in drilling resistance, adjust the speed and thrust in a timely manner, and avoid drilling tool jamming or damage.

3、 Anchor rod installation and grouting stage:

1. Inserting anchor rod: After drilling is completed, immediately use a special tool to insert the anchor rod into the hole, leaving a section at the end of the anchor rod for subsequent connection of the tray and nut.
2. Grouting anchoring agent: In some cases, especially under hard rock conditions, chemical anchoring agents are injected around the anchor rod to enhance the anchoring effect. At this point, the grouting pump provided by the drilling truck evenly fills the borehole with anchoring agent, and after solidification, forms a strong bond.
3. Tighten the nut: After the anchoring agent solidifies, use a torque wrench or electric tool to tighten the nut, apply a pre tension to the anchor rod, and firmly embed it into the rock.

4、 Final inspection and recording:

1. Quality inspection: After the installation of each anchor rod, a pull-out test must be conducted to confirm whether it meets the specified bearing capacity standard.
2. Data recording: Record the position, depth, anchor rod specifications used, grouting volume, and other relevant information of each drilling hole for later analysis and maintenance reference.

5、 Attention:

Throughout the entire homework process, Haoyun Heavy Industry calls for safety to always be the top priority. Operators must strictly comply with coal mine safety regulations, wear personal protective equipment, regularly inspect the integrity of various parts of the equipment, especially in high-pressure and flammable gas environments, and ensure that explosion-proof measures are in place.

The hydraulic anchor drilling truck used in coal mines has played a huge role in coal mine roadway support work due to its high efficiency and precision. It not only greatly shortens the construction period, but also significantly enhances the stability of the roadway, creating a safer and more reliable working environment for coal mine production.