Axial step pressurization system for long auger drilling rig into rock
A technology of long auger drilling rig and pressurization system, which is applied in the direction of rotary drilling, rotary drilling rig, percussion drilling, etc., and can solve problems such as difficult to achieve rock drilling
Active Publication Date: 2021-06-25
CENT SOUTH UNIV +1
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Problems solved by technology
[0005] Based on this, the present invention proposes an axial step pressurization system for long auger drilling into the rock, which aims to solve the difficult realization of long auger drilling rigs in the prior art. Technical Problems in Rock Drilling
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[0026] In order to make the above objects, features and advantages of the present invention more comprehensible, specific implementations of the present invention will be described in detail below in conjunction with the accompanying drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described here, and those skilled in the art can make similar improvements without departing from the connotation of the present invention, so the present invention is not limited by the specific implementations disclosed below.
[0027] see figure 1 with figure 2 , the present invention provides a rock-entry axial step pressurization system for a long auger drilling rig, comprising a hoisting mechanism 10, a column body 1, a pressurizing cylinder 2, a positioning cylinder 3, and a drilling power head slidabl...
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The invention discloses a rock-entry axial step pressurization system for a long auger drilling rig, which includes a hoisting mechanism, a column body, a pressurized oil cylinder, a positioning oil cylinder, and a drilling power head slidably arranged on the column body. A plurality of pressurized load-bearing structures are arranged at intervals along the direction parallel to the traveling direction of the drilling power head on the column body, and the cylinder body of the pressurized oil cylinder is hinged with the drilling power head to position the cylinder body of the oil cylinder It is hinged with the drilling power head, and the piston rod of the positioning cylinder is hinged with the cylinder body of the pressurized cylinder so as to be able to drive the pressurized cylinder to move between the pressurized position and the non-pressurized position. In the pressurized position, The telescopic movement direction of the piston rod of the pressurized oil cylinder is parallel to the traveling direction of the drilling head, and the piston rod of the pressurized oil cylinder cooperates with the pressure bearing structure. The axial step pressurization system for long auger drilling into rock aims to solve the technical problem that the long auger drilling rig in the prior art is difficult to realize drilling into rock.
Description
technical field [0001] The invention relates to the field of pressurization systems for long auger drilling rigs, in particular to a rock-entry axial step pressurization system for long auger drilling rigs. Background technique [0002] There are three types of equipment commonly used in the construction of cast-in-place pile foundations: long auger drilling rigs, reverse circulation drilling rigs, and rotary drilling rigs. Compared with the other two types of construction equipment, the long auger drilling rig has the outstanding advantages of low equipment and construction process costs and fast construction speed, so it is widely used: the construction speed of the long auger drilling rig is more than 10 times that of the reverse circulation drilling rig. It is more than 2 times the pile-forming speed of rotary drilling rig; the equipment cost of long auger drilling rig is not more than 1 / 2 of that of rotary drilling rig with the same capacity; It is the construction equ...
Claims
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IPC IPC(8): E21B3/02E21B7/00E21B12/00E21B15/04
CPCE21B3/02E21B7/00E21B12/00E21B15/045
Inventor 胡均平
Owner CENT SOUTH UNIV