1. Hydropower, mines, dams, roads and subgrade anchoring projects are mainly based on skid-type light hydraulic anchors and drilling rigs. Mine anchoring projects are mainly rock anchors. The hole-forming accuracy is relatively high, and it usually needs to be about ten meters high. During construction, it is necessary to ensure that the drilling rig moves flexibly and conveniently on the scaffold, while taking into account the stability of the drilling rig during perforation, and is easy to connect with the scaffold firmly. Generally, a skid-type drilling rig should be used with a weight of about 1.6 tons and a rotation torque of about 3.0kNm. Propelling lifting force of about 5 tons is more suitable; the most effective method is to use air DTH hammer for rock drilling.
2. High-rise building deep foundation pit anchors are mainly crawler self-propelled full hydraulic anchor rigs. Since the foundation pits of urban buildings are mainly sand and gravel, water is generally used as the driving force for slag removal and hole cleaning. Therefore, even if it rains, the working site is muddy. It is only suitable for crawler drilling rigs to be equipped with hydraulic rock drills or high-torque rotary drilling. The weight is about 8 tons, the rotation torque is about 700 kgm, and the lifting force is about 8 tons.
3. The supporting drilling tools of anchor rigs are developing towards the combination of soil drilling tools and rock anchor drilling tools. In the Three Gorges Permanent Ship Lock dam anchor cable drilling project, the best drilling rig is to use soil anchor casing drills. The principle of entering the center and protecting the wall is applied to the drilling skewer developed for the guiding of the drill pipe in the drilling of rock anchor holes. Similarly, to solve the serious problems of lower drilling efficiency of hydraulic punching drills than soil exploration anchor holes and damage to casing drilling tools is that the air down-the-hole hammer centering reaming casing drilling tool being tested and developed is also another combination of soil anchor drilling tool and rock anchor drilling tool.
4. Select the basic parts of road engineering machinery police communication
At present, imported anchoring rigs from the chassis four-wheel area to the internal combustion engine, hydraulic pump, hydraulic cylinder, hydraulic valve, control and operating system all learn from or use ordinary basic parts of road construction machinery. This is the direction that many manufacturers should learn from and improve, and it is also a fast and effective way to reduce costs and improve reliability for anchor rigs.