Friends who have had contact with rotary drilling rigs know that they are suitable for construction in soil layers such as sand, silt, and clay. The commonly used equipment for rotary drilling rigs includes: amplitude control mechanism, mast assembly, anchor frame, servo frame, and power head. What kind of working device structure do they have? How much do you know about these "routine procedures" hidden on the rotary drilling rig?
1, Structural amplitude mechanism of rotary drilling rig working device
1. A small parallelogram triangular structure composed of an arm, a tripod, a support rod, and a variable amplitude cylinder, characterized by a wide range of variable amplitude. The mast can be placed behind the mast, folded and reduced in height and length for transportation. The disadvantage is that the front part is heavy, the stability is slightly poor, and the mast cannot withstand excessive torque.
2. Another type is the large triangular structure represented by Bao'e, which is characterized by its simple structure, good stability, and ability to withstand large torque. The disadvantage is that it requires dismantling auxiliary lifting equipment and transportation is time-consuming.
3. The third is the Spanish company Ramado and the Italian company Antego, although they are also a large triangular support structure. Due to the auxiliary lifting cylinder, the entire machine can be inverted and folded. It has the advantages of novel structure and economic practicality.
2. Mast 1 and Mast Function Rotary Drilling Machine Working Device Structure: Install power head, load-bearing drill rod, and fixed front main lifting mechanism. Masts generally adopt box shaped structures, which are divided into upper mast, middle mast, and lower mast. The lowering method does not require disassembly. The mast tilts 180 degrees backwards. The drilling rig runs smoothly and has superior performance.
2. Box type telescopic structure: This structure is a bit complex and costly, but it is easy to operate, flexible, and does not require disassembly, which is beneficial for transportation. Sumitomo, Hitachi Construction Machinery, and Zhengzhou Shipyard are typical truss structures in Japan. Most attachments of crawler cranes adopt this mast structure, which is lightweight and has a relatively wide operating field of view. Widely used, it can also be used as a rotary drilling rig and crawler crane, Japanese vehicles, represented by Sumitomo Corporation of Japan.
3, Suspended anchor structure of rotary drilling rig working device
The function of drilling rig anchor is to fix the main and auxiliary drums, change the direction of wire rope movement, lift and lower the drill rod and lifting support components. The function and structure of the suspension anchor are basically the same, among which the design concept of the suspension anchor * * of Bao'e drilling rig.
4, Servo frame structure of rotary drilling rig working device
Servo bracket is an auxiliary device on the drill rod that can fix and guide the drill rod. Its main function is to support the drill rod when it falls. The box telescopic truss structure mast has no servo frame.
5, Rotating drilling rig working device structure power head
The power head is an important component of the drilling rig, and its function is to output torque. It consists of a variable hydraulic motor, planetary gearbox, power box, and some auxiliary components. Its working principle is that the high-pressure oil delivered by the hydraulic pump drives the hydraulic motor to output torque through the planetary reducer and power box, reducing and increasing torque.
