1 Basic Principles of Hydraulic System Design The use of advanced technologies and successful experiences at home and abroad, combined with China's national conditions and the specific use requirements of drilling rigs. Try to be simple and applicable, use the least possible hydraulic components to achieve the various actions of the rig. In this way, the probability of occurrence of failures can be reduced, the energy utilization rate and the reliability of the drilling rig can be improved, and the labor intensity of workers can be reduced. 2 main oil system 2.1 Speed ​​Control Mode and Selection of Hydraulic Pump There are two major categories of speed control methods for hydraulic systems: stepless speed regulation and stepless speed regulation. Stepless speed regulation has a large range of speed adjustment and can meet the requirements of different drilling processes. However, the variable control circuit and the hydraulic pump drive mechanism are more complex. KP3500 hydraulic drilling rig adopts 4 A7V160LV1R constant power variable displacement pumps and 2 sets of 2QJM62-6.3B low-speed high-torque hydraulic motors to form a constant power speed control system. It combines stepless speed change and stepless speed change to broaden the speed range, and There is no need for throttling and flooding at the time of speed regulation, energy utilization is reasonable, efficiency is high, and heat is low. Due to the complex conditions of the drilling rig construction and the varying loads, it is required that the rig can automatically adjust the speed and torque as the load changes, while the constant power variable system can adapt to the requirements of the load conditions, that is, the system can automatically reduce the speed as the load increases. Increase the torque. And can make full use of the source motive power to achieve the best drilling results. The working characteristic of A7V160LV1R constant power variable pump is that its displacement can be adjusted automatically with the change of load pressure to ensure that the input power is close to a constant value. If irrespective of efficiency, the output power N of the motor is basically equal to the input power of the pump, which is also a constant value. It can be known from the motor power formula N=Mn/974 that when N is constant, M and n are in a hyperbolic relationship, ie Under the control of the power variable pump, with the change of the load, the motor output torque M and the speed n are automatically adjusted according to the hyperbolic relationship, which can meet the working conditions. 1..Easy and flexible full hydraulic control Lifting Drilling Machine,Lifting Rig JIANGSU XI TEC ENVIRONMENTAL&DRILLING EQUIPMENT COMPANY CO.LTD , https://www.xitecdrilling.com
The rig's speed, torque, thrust axial pressure, reverse axial pressure, thrust speed, and lifting speed can be adjusted at any time to meet the requirements of different drilling tool working conditions and different construction processes
2.Top-drive slewing propulsion lift
It is easy to connect and disconnect the drill pipe, shorten the auxiliary time, and also facilitate drilling with the pipe.
3.Multifunctional drilling
Various drilling processes can be used on this rig, such as: down-the-hole drilling, through-air reverse circulation drilling, gas lift reverse circulation drilling, cutting drilling, roller drilling, tube drilling, and Core drilling under development and more. The drilling rig can be equipped with mud pumps, foam pumps and generators according to user needs. The rig is also equipped with various hoists as standard.
4.High efficiency
Due to the full hydraulic and top-drive slewing propulsion lifting, it is suitable for various drilling processes and various Drilling Tools, with convenient and flexible control, fast drilling speed and short auxiliary time, so the operation efficiency is high.