Hydraulic type driving system for engineering driller

Abstract

The invention discloses a hydraulic type driving system for an engineering driller. A drilling hydraulic cylinder and a hydraulic motor driving drill component are adopted to achieve drilling, and moreover, the control for a drilling stroke is achieved by the drilling hydraulic cylinder through a pulley block; the layout of the drilling hydraulic cylinder is flexible, the equipment layout space is optimized, so that a drilling component has larger rising space and dropping space basically, the drilling stroke is increased, the drilling movement times are reduced, and accordingly, the drilling construction efficiency is improved; meanwhile, with the optimization provided by the invention, the equipment layout space can be used sufficiently, and then the driller is enabled to be compact in structure; a hydraulic pressure driving structure and electrohydraulic control are adopted to achieve stepless speed regulation, and the system can be suitable for drilling requirements of different strata; a power head drive adopts a hydraulic motor drive and can reduce the speed by combining machinery, so that the reliability of power transmission is further increased, and adjustable range of torque change is larger; and during a use process of the equipment, the labor intensity is reduced, and the use cost and the manual cost are saved, so that the system can be used for construction of engineering pile holes and can meet the processing requirement.

Description

technical field [0001] The invention relates to an engineering machine, in particular to an engineering drilling rig hydraulic driving system. Background technique [0002] The engineering drilling rig is a drilling rig used for the construction of large-diameter cast-in-situ piles in power construction, bridges, high-rise buildings, dams, port terminals and other projects. [0003] In the prior art, the traditional mechanical circulation drilling rig uses a motor or an internal combustion engine as a power source, drives a transmission or a reducer, and then switches the transmission shaft through a commutator to realize the power of the power head of the drilling rig or the power of the winding machine. Wherein a kind of circular drilling rig power head transmission and hoisting hoisting transmission are respectively provided with a set of transmission systems. The chuck of the power head is arranged above the main shaft of the power head, or arranged below the main shaft...

AI Technical Summary

Problems solved by technology

[0004] The engineering drilling rig of the above-mentioned structure mainly has the following deficiencies: 1. The power head of the motor-driven transmission or reducer has a small speed range or only a rated speed, so the power torque does not change much, and it is difficult to drill into complex formations. Poor stability of pile construction

2. The transmission, reducer, commutator and other assemblies are not equipped with safety overload protection devices

When drilling into complex formations, it is easy to cause damage to parts, especially to the bevel gear

3. The brake wheels at the left and right ends of the hoist are equipped with lifting brakes and braking brakes. There is no self-locking device between the two brakes. When the lifting brakes and braking brakes are tightened at the same time, mechanical accidents or parts may be caused. be damaged

4. The main drill pipe is clamped by the power head chuck, and the power head is moved by the column or the gantry oil cylinder. Since the hydraulic cylinder directly acts on the drill pipe, the equipment layout space is limited, resulting in the usual moving stroke of the drill pipe being about 0.5-1 meter , so the drilling distance is short, which directly affects the one-time loading and unloading construction of cast-in-situ piles, and at the same time increases the number of drilling movements and reduces the efficiency of drilling construction

5. There is no tower on the drilled machine base. In order to meet the needs of drilling construction, a triangular tower is erected at the hole, and the hoisting device is used to pass the triangular tower to meet the construction process requirements.

The separate setting of the drilling rig and the tower will make the tower installation difficult, difficult to move, and the tower fixation and safety are poor

Sixth, the more important thing is that the existing engineering drilling rigs are complex in structure and bulky, and it is extremely inconvenient to move and transfer. Not only the cost is high, but also the construction efficiency is seriously affected

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