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Casing driver and rotary drilling rig

A technology of rotary drilling rig and driver, applied in the field of machinery, can solve problems such as difficulty in vertical accuracy of hole forming, and achieve the effects of guaranteeing quality and quality, highlighting substantive features, and being easy to operate.

Pending Publication Date: 2020-11-13
BEIJING SANY INTELLIGENT MFG TECH CO LTD
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  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] However, since the thickness of the occlusal surface of the pile is only 20cm, it is difficult to control the vertical precision of the hole in order to avoid the consequences of front and rear, left and right splits

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  • Casing driver and rotary drilling rig
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Embodiment Construction

[0039] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments It is a part of embodiments of the present invention, but not all embodiments. The components of the embodiments of the invention generally described and illustrated in the figures herein may be arranged and designed in a variety of different configurations.

[0040] Accordingly, the following detailed description of the embodiments of the invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art wi...

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Abstract

The invention relates to the technical field of machinery, in particular to a casing driver and a rotary drilling rig. The casing driver is used to cooperate with a power head and a mast of the rotarydrilling rig, and comprises a perforated cylinder, a coupling, a casing, and a positioning device. The upper end of the perforated cylinder is connected with the power head through the coupling. Thelower end of the perforated cylinder is connected with the casing. One end of the positioning device is arranged on the mast. The other end of the positioning device is matched with the casing to limit the displacement of the casing in the vertical direction of the mast. In this way, the verticality of the casing can be controlled efficiently and stably.

Description

technical field [0001] The invention relates to the field of mechanical technology, in particular to a casing driver and a rotary drilling rig. Background technique [0002] During rotary excavation construction, sometimes there are constructions for special silt, sand-bearing layers, high groundwater content, and Kost landforms. At this time, the rotary drilling rig is equipped with a casing driver, and it is considered the most effective and economical construction method to directly use the casing under the rotary drilling power head. The advantage is that it is easy to operate, and can ensure the compactness of the casing of the rotary drilling rig, shorten the filling time of the excavation hole, and improve the hole-forming efficiency of the rotary drilling rig. [0003] However, since the thickness of the occlusal surface of the pile is only 20 cm, it is difficult to control the vertical precision of the hole in order to avoid the consequences of front and rear, left...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B3/02E21B7/04E21B15/04E21B19/10
CPCE21B3/02E21B7/04E21B15/04E21B19/10
Inventor 于卓伟
Owner BEIJING SANY INTELLIGENT MFG TECH CO LTD