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Manufacturing and using methods of inwards-concave flat-inserting type drill rod joint

A drill pipe joint and drill pipe technology, which is applied to drill pipes, drill pipes, drilling equipment, etc., can solve the problems of requiring a lot of raw materials, complex manufacturing processes, and large lathe processing capacity, so as to reduce manufacturing costs, simplify manufacturing processes, The effect of shortening the production cycle

Inactive Publication Date: 2021-01-15
魏峰
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] However, the above-mentioned drill pipes produced by using the above-mentioned tapered pipe thread joints require more raw materials and a large amount of lathe processing, no matter the production technology of friction welding or pressure forming is used to varying degrees. The common defects of complex manufacturing process, long production cycle and high manufacturing cost. Therefore, in order to eliminate the above-mentioned technical defects (disadvantages), it is necessary to find another way to change the traditional design ideas of pipe threaded joints. The threaded joints are completely subverted and discarded, and then a new design (technical means) can be used to fundamentally eliminate the above-mentioned technical defects (disadvantages)

Method used

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  • Manufacturing and using methods of inwards-concave flat-inserting type drill rod joint
  • Manufacturing and using methods of inwards-concave flat-inserting type drill rod joint
  • Manufacturing and using methods of inwards-concave flat-inserting type drill rod joint

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Embodiment Construction

[0023] Such as figure 1 , 2, and 3, a method for manufacturing and using an inwardly recessed flat plug-in drill pipe joint, the structure is composed of a plug-in section 1 of the rod body 4 of the drill pipe, a sealing washer 2, and a fastening device for connecting the drill pipe 3 consists of three parts; therefore, the manufacturing method is as follows: the plug-in section 1 is made by cutting and cutting a section of the profile material of the above-mentioned triangular arc-convex drill pipe, and the specification cross-section of the profile used in the plug-in section 1 is less than A thickness level of the specification section of the profile used to make the drill pipe body (that is, the outer section of the plug-in section is equal to the inner section of the drill-pipe profile), such a design matching just enables the plug-in section 1 to be inserted into the body 4 of the drill pipe for one Cut (generally the length of insertion is 10-30 cm); that is, the tota...

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Abstract

The invention discloses manufacturing and using methods of an inwards-concave flat-inserting type drill rod joint. The drill rod joint is composed of rod body inserting sections of drill rods, a sealing washer, and fastening devices connected with the drill rods. Each of the inserting sections is formed by cutting a section of a profile made of the same material of a triangular arc convex edge drill rod; the inserting sections can be inserted into rod bodies of the drill rods and are welded and connected with the rod bodies into a whole; and the sealing washer used for sealing is placed between rod body joints of the two drill rods which are in butt joint through the inserting sections. The middle portions of the three side walls of the end portions of the rod bodies of the two drill rodswhich are connected with each other are applied pressure inwards to enable the middle portions to be concave inwards, the fastening devices connected with the drill rods are welded to the concave portions respectively, and each fastening device is formed by connecting a nut, a bolt and a sleeve. The three bolts are respectively inserted into the three sleeves by using an internal hexagonal wrenchand then are uniformly screwed with the corresponding nuts, so that the connection operation of the two drill rods is completed.

Description

technical field [0001] The invention discloses a method for manufacturing and using an inwardly concave flat-insert drill pipe joint, which belongs to the technical field of mining equipment. Background technique [0002] At present, the domestic triangular arc convex drill pipe has been widely used in major mining areas in China due to its strong gas emission capacity, low rotation resistance, and fast drilling speed. shape, and the joint is a pipe thread with a taper, which forms the special structural characteristics of the drill pipe; in the past, the technical structural characteristics of the triangular arc convex edge drill pipe are generally used: the use of a pipe thread joint with a taper (Including male and female pipe thread joints with internal thread and external thread) and the two ends of a section of drill pipe profile are welded and integrated after plugging; the above-mentioned drill pipe produced by this technical scheme fully retains the The pipe thread...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/04E21B17/042B23P15/00
CPCB23P15/00E21B17/04E21B17/042
Inventor 魏峰
Owner 魏峰
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