What are the characteristics of a fully hydraulic tunnel drilling rig
The fully hydraulic tunnel drilling rig is a drilling equipment widely used in underground engineering environments such as tunnels, with the following characteristics:
1、 In terms of power and transmission system
1. Fully hydraulic drive
The fully hydraulic tunnel drilling rig adopts a fully hydraulic drive method, using hydraulic oil as the power transmission medium. This driving method
The fully hydraulic tunnel drilling rig is a drilling equipment widely used in underground engineering environments such as tunnels, with the following characteristics:
1、 In terms of power and transmission system
1. Fully hydraulic drive
The fully hydraulic tunnel drilling rig adopts a fully hydraulic drive method, using hydraulic oil as the power transmission medium. This driving method makes the power output of the drilling rig smoother and more continuous. Compared with traditional mechanical transmission drilling machines, it avoids the impact and vibration during the mechanical transmission process and reduces the wear between mechanical components. For example, during the drilling process, the hydraulic motor can correctly control the rotation speed and torque, allowing the drill bit to break rocks in a stable state, thereby improving drilling efficiency and drilling quality.
The hydraulic system has a high power density and can achieve a large power output in a small space. This makes the fully hydraulic tunnel drilling rig more compact in structural design, making it easier to install and move in tunnels with limited space. Moreover, the hydraulic system can easily achieve infinite speed regulation, and can flexibly adjust the rotation speed and feed speed according to different drilling conditions, such as in soft and hard rock drilling.
2. Efficient power transmission
The hydraulic system transmits power to various actuators such as hydraulic motors and cylinders through high-pressure oil pipes. This transmission method has low energy loss and high transmission efficiency. Compared with belts, chains, and other methods in mechanical transmission, hydraulic transmission is not limited by distance and direction, and can correctly transmit power to the required position. For example, in the feeding mechanism of a drilling rig, the hydraulic cylinder can quickly and correctly respond to the instructions of the control system, achieve smooth feeding and lifting of the drill bit, and ensure the smooth progress of the drilling process.
2、 Drilling performance aspect
1. Strong drilling ability
The fully hydraulic tunnel drilling rig has strong drilling capability and can adapt to various rock layers of different hardness. For soft rock, it can achieve rapid drilling by adjusting a higher rotation speed and appropriate feed pressure; For hard rocks, increasing torque and reducing rotational speed can effectively break the rock. The drilling depth and diameter also have a large range, generally reaching several hundred meters. The drilling diameter ranges from tens of millimeters to several hundred millimeters, which can meet different engineering needs such as geological exploration, gas drainage, and water exploration.
2. High drilling accuracy
Due to the use of high-precision hydraulic control technology, the fully hydraulic tunnel drilling rig can correctly control the direction and angle of drilling. It performs well in directional drilling, and through the installation of guiding devices and inclinometers on the drilling rig, it can monitor the trajectory of the borehole in real time and adjust the drilling direction as needed. This is of great significance for some projects that require correct control of drilling trajectories, such as underground obstacle detection and drilling operations through important underground facilities in urban underground rail transit construction.
3、 Operation and control aspects
1. Easy to operate
The operation of a fully hydraulic tunnel drilling rig is relatively simple. It is usually equipped with a centralized control panel, and operators can easily control various movements of the drilling rig, such as turning, feeding, pulling, etc., through operating handles, buttons, or touch screens. Compared with traditional mechanical drilling rigs, there is no need for complex mechanical shifting and speed regulation operations, which reduces the technical requirements for operators. Moreover, the operation response speed of the hydraulic system is fast, and the operator can adjust the working status of the drilling rig in a timely manner according to the actual drilling situation.
2. High degree of automation
This drilling rig has certain automation functions. For example, it can achieve automatic feeding and automatic speed regulation. During the drilling process, the drilling rig can automatically adjust the feed speed according to the set drilling parameters, such as drilling pressure, rotation speed, etc., to ensure the stability of the drilling process. At the same time, some excellent fully hydraulic tunnel drilling rigs can also be connected to underground monitoring systems and upper computer control systems to achieve remote monitoring and operation, improving the safety of drilling rig operations in hazardous environments.
4、 In terms of safety and reliability
1. Good safety performance
The design of the fully hydraulic tunnel drilling rig fully considers safety factors. Its hydraulic system is usually equipped with safety valves and overload protection devices. When the system pressure exceeds the rated value or overload occurs, these devices can automatically open, release pressure, and avoid equipment damage and safety accidents. For example, if encountering hard rocks or stuck drilling during the drilling process, the system pressure will rise sharply, and the safety valve will take effect to protect the hydraulic system and mechanical components of the drilling rig.
The body structure of the drilling rig is sturdy, and the shell is made of high-strength metal materials, which can withstand certain external impacts and harsh underground environments. Moreover, protective devices are installed in some key areas, such as the swivel head and feeding mechanism, to prevent operators from coming into contact with rotating and moving parts, reducing the risk of personal injury.
2. High reliability
The mechanical and hydraulic components of the fully hydraulic tunnel drilling rig have been carefully designed and rigorously inspected for quality. The sealing performance of its hydraulic system is good, which can prevent hydraulic oil leakage and ensure the normal operation of the system. The mechanical components are made of high-strength and wear-resistant materials, reducing the wear and failure probability of the components. In addition, the drilling rig also has good maintainability, making it easy for maintenance personnel to carry out daily maintenance and troubleshooting. Through regular maintenance and upkeep, the service life of the drilling rig can be effectively extended, ensuring the reliability of the equipment.
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