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Pnuematic drifter with replaceable foot pieces

A technology for drilling rigs and rock drilling rigs, used in rotary drilling rigs, rotary drilling, impact drilling, etc., can solve the problems of frame drilling rig base damage, drilling rig column wear, expensive and other problems

Inactive Publication Date: 2011-03-23
LONGYEAR TM
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Although carriages are generally made of a softer material than the drill string, the base part of the drill string wears out faster than the carriage due to the grit embedded in the soft material of the carriage as the drill string slides on the carriage Will cause wear to the drill string
Such wear leads to damage to the base of the rig, requiring replacement or costly repair of the entire rig string

Method used

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  • Pnuematic drifter with replaceable foot pieces
  • Pnuematic drifter with replaceable foot pieces
  • Pnuematic drifter with replaceable foot pieces

Examples

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Embodiment Construction

[0014] Specific details are set forth in the following description to provide a holistic understanding. However, it will be understood by those skilled in the art that the described devices, and associated methods of using the same, can be made and used without employing such specific details. Of course, these devices and related methods can be implemented by making some changes or adjustments to the listed devices and related methods, and can also be used in combination with other devices and techniques commonly used in the industry today. For example, although the following description focuses on rig cylinders used in pneumatic rig operations, the provided apparatus and related methods are equally applicable to other, such as hydraulic rigs, various percussion drills and other similar devices and methods.

[0015] The accompanying drawings depict an example embodiment of a trellis rock drilling rig including a trellis drill column with a replaceable base. FIG. 1 shows a tr...

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Abstract

Pneumatic drifters containing a drifter cylinder with removable feet and associated methods for using the pneumatic drifters are described. The removable feet are connected to feet pad of a drifter cylinder with multiple fasteners. The mating surfaces of the feet and the feet pad are provided with complimentary features that limit the shearing forces on the fasteners during operation of the drifter rock drill. The removable feet can be replaced quickly and easily without have to replace the entire drifter cylinder, thereby saving time and reducing costs. Other embodiments are also described.

Description

technical field [0001] The present invention generally relates to methods of drilling and apparatus for drilling. In particular, the present invention relates to pneumatic frame drills including drill columns with replaceable base members and related methods of using pneumatic frame drills. Background technique [0002] There are currently many methods of drilling operations known and used. One type of drilling method, rock drilling, usually involves drilling holes in rock or other hard objects so that the rock is fractured so that it can be moved. If necessary, explosives can also be placed in the hole to further crack and break the rock. A type of drilling rig used for rock drilling is commonly referred to as a rack drilling rig. [0003] Rigs are generally powered by pneumatic or hydraulic pressure. Pneumatic drifters are more commonly used than hydraulic drifters due to maintenance considerations. Pneumatic rack drills consist of a cylindrical drilling mechanism (al...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/02E21B3/02E21B15/04
CPCE21B7/025
Inventor 威廉·詹姆斯·默里
Owner LONGYEAR TM
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