A long helical hydraulic support drilling tool
A long helix and drilling tool technology, which is applied in the direction of liquid/gas jet drilling, drill pipe, drill pipe, etc., can solve the problems of soil-entrapped drilling tools, discontinuous excavation, inability to lift the drilling rig to squeeze and expand supporting equipment accidents, etc. To achieve the smooth effect of the transportation channel
Active Publication Date: 2017-01-25
奥磊科技发展有限责任公司
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Problems solved by technology
[0007] In view of this, the present invention provides a long helical hydraulic branch expansion drilling tool, which can solve the problem that the existing long helical branch disc drilling tool cannot be lifted up due to the discontinuous unearthing during the drilling process and the inclusion of soil when the support arm is retracted. And problems such as frequent accidents of drilling rig extrusion and expansion equipment
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[0022] The present invention will be described in detail below with reference to the accompanying drawings and examples.
[0023] as attached figure 1 As shown, the present invention provides a long helix hydraulic expansion drilling tool, including a drill pipe, a drill bit, a multi-way steering device 1, a hollow oil cylinder 2, a high-pressure water pump, a expansion device assembly 3 and a slag storage device 4;
[0024] The drill pipe is composed of a hollow inner tube and an outer tube with helical blades, the outer tube with helical blades is fixedly connected to the hollow inner tube, and the middle and lower part of the outer tube with helical blades is left with the installation of the expander assembly 3 space; an annular cavity is formed between the outer peripheral surface of the hollow inner tube and the inner peripheral surface of the spiral outer tube;
[0025] The multi-way diverter 1 is located above the drill pipe but not in contact with the drill pipe, and...
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The invention discloses a long spiral hydraulic supporting and expanding drilling tool and belongs to the technical field of drilling tool structures. The drilling tool comprises a drill rod, a drill bit, a multipath steering gear, a hollow oil cylinder, a high-pressure water pump and a supporting and expanding device assembly. The drill rod is composed of a hollow inner pipe and an outer pipe provided with spiral blades. An installing space of the supporting and expanding device assembly is reserved in the lower middle section of the outer pipe provided with the spiral blades. The multipath steering gear and the drill bit are installed at the two ends of the drilling tool respectively. A pipeline of the high-pressure water pump and a pipeline of the hollow oil cylinder are installed inside the drill rod. The supporting and expanding device assembly is installed between the outer pipe provided with the spiral blades and a core pipe. When the supporting and expanding device assembly is in a closed state, a continuous spiral structure is formed by spiral pieces on the outer peripheral surface of the supporting and expanding device assembly and spiral pieces on the outer peripheral surface of the outer pipe provided with the spiral blades; when the supporting and expanding device assembly is in an open state, the supporting and expanding device assembly unfolds gradually under the action of the hollow oil cylinder, and a closed supporting and expanding structure is formed. According to the long spiral hydraulic supporting and expanding drilling tool, a long spiral supporting and expanding disc formation process is achieved in a real sense, and a long spiral construction process in an original state is reserved.
Description
technical field [0001] The invention relates to a drilling tool, in particular to a long helix hydraulic expansion drilling tool, which belongs to the technical field of drilling tool structure. Background technique [0002] Long auger drilling rigs are commonly used mechanical equipment in the construction field. At present, there are nearly 10,000 long auger drilling rigs in the country, but they still use the drilling tools in the 1930s. The method has never changed. In order to fundamentally realize the energy saving, environmental protection and high efficiency of the long auger drilling rig, and fully tap its potential use value, we have developed the long auger hydraulic expansion drilling tool. [0003] Similar drilling tools have also appeared in the engineering practice of long auger drilling rigs in the country. At present, only 2 cases have been inquired from relevant materials. ①Application number 200910064004.5 Invention name long auger support disc pile, the i...
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IPC IPC(8): E02D5/44E21B7/00E21B17/22E21B7/18
Inventor 滕金领彭健
Owner 奥磊科技发展有限责任公司