Full-hydraulic screw drilling machine

Abstract

The invention provides a full-hydraulic screw drilling machine, belonging to the piling machinery field. The drilling machine comprises a tracked chassis, an upper chassis, a mast, a power head, a main winch, a tool winch, a hydraulic power station, an operating room and a drilling tool system, wherein the upper chassis is arranged on the tracked chassis; the mast, the main winch, the hydraulic power station and the operating room are arranged on the upper chassis; the power head is arranged on the mast; the hydraulic power station is connected with hydraulic motors of the power head, the main winch, the tool winch, the tracked chassis and the like; the elevating device of the power head is connected with the main winch through a steel wire rope; and a rotation speed measurement and displacement measurement system for the screw drilling machine is connected with a central processing calculator and a speed setting controller to form a closed-loop control system. The full-hydraulic screw drilling machine of the invention has great output torque; the rotation speed and the feed speed of the power head can form a scaling transmission relationship, and the scaling relation can be subject to infinitely variable control; and the power head adopts total-stroke feed, thus being suitable for the construction processes of screw piles with multiple screw pitches.

Description

(1) Technical field [0001] The invention relates to a piling machine, in particular to a full-hydraulic power head type pile frame drilling rig for thread friction pile hole construction of building foundations, bridge foundations, highways or high-speed railway foundations, etc. (2) Background technology [0002] At present, the screw pile construction method has been listed as a national first-level construction method, a science and technology project plan of the Ministry of Construction, a national construction industry scientific and technological achievement promotion project, and a recommended project of the People's Daily "National Key Patented Technical Achievements". Due to the limitations of construction equipment, there is currently no special equipment that can meet the requirements of the screw pile construction method. The equipment modified with long auger drilling rigs cannot solve the problems of fixed ratio feed and stepless speed adjustment, and has the de...

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Problems solved by technology

[0002] At present, the screw pile construction method has been listed as a national first-level construction method, a science and technology project plan of the Ministry of Construction, a national construction industry scientific and technological achievement promotion project, and a recommended project of the People's Daily "National Key Patented Technical Achievements". Due to the limitations of construction equipment, there is currently no special equipment that can meet the requirements of the screw pile construction method. The equipment modified with long auger drilling rigs cannot solve the problems of fixed ratio feed and stepless speed adjustment, and there is a defect of insufficient output torque.

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