Introduction to the Development Direction of Domestic Anchor Drilling Machines

1. The anchoring engineering of water and electricity, mines, dams, and road embankments is mainly based on sled type lightweight hydraulic anchors and drilling machines. The anchoring engineering of mines is mainly based on rock anchors, which require high drilling accuracy. Generally, construction must be carried out on a scaffold about ten meters high. Therefore, it is necessary to ensure that the drilling machine is flexible and convenient to move on the scaffold, while also taking into account the stability during drilling, and is easy to firmly connect with the scaffold. Generally, a sled type I drilling machine with a weight of about 1.6 tons, a rotating torque of about 3.0 kNm, and a propulsion lifting force of about 5 tons is more suitable; The use of air down-hole hammers in rock drilling is an effective method.

2. The anchoring engineering of deep foundation pits in high-rise buildings is mainly carried out by crawler self-propelled fully hydraulic anchor drilling machines. Due to the fact that the foundation pit strata in urban buildings are mainly composed of sand and gravel, water is generally used as the driving force for slag removal and hole cleaning during drilling. So, even if there is precipitation, the work site is relatively muddy. It is only suitable for tracked drilling rigs to be equipped with hydraulic rock drilling machines or high torque rotary drilling, with a machine weight of about 8 tons, a rotary torque of about 700 kgm, and a lifting force of about 8 tons

3. The development direction of anchor drilling rig matching drilling tools is towards the combination of local drilling tools and rock anchor drilling tools. In the Three Gorges * Ship Lock Dam Anchor Cable Drilling Project, the drilling rig with the best drilling accuracy is developed by using the principle of stabilizing and protecting the wall of the soil anchor casing during drilling, and applying it to guide the drilling rod in rock anchor hole drilling. Similarly, to solve the problems of low efficiency and serious damage to the casing drilling tools compared to the hydraulic punch drilling rig for soil anchor holes, the air down-the-hole hammer for center expansion casing drilling is being tested and researched, which is also another combination of soil anchor drilling tools and rock anchor drilling tools

4. Select the basic components for road construction machinery alarm communication

At present, imported anchor drilling rigs have borrowed or adopted common basic components of road construction machinery from the chassis four wheel area to internal combustion engines, hydraulic pumps, hydraulic cylinders, hydraulic valves, control and operation systems. This is a direction that many domestic manufacturers should learn from and improve, and it is also a fast and effective way for domestic anchor drilling rigs to reduce costs and improve reliability.