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Cast steel double helix adapter

A double-helix, cast steel technology, applied in the direction of drill pipe, drill pipe, casing, etc., can solve the problems of resource waste, fracture, etc., and achieve the effect of accurate and stable connection, increased length and strong adaptability

Active Publication Date: 2021-11-02
山东兖能泰德重工有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, when the bending moment is too large or the connecting rod is used for too long, and fatigue damage occurs, resulting in fracture, bending and other problems, it is generally necessary to replace the connecting rod again, resulting in waste of resources. Flexible, you only need to replace some parts of the post, and the installation of each part of the post is more accurate and stable Cast steel double-helix post

Method used

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  • Cast steel double helix adapter
  • Cast steel double helix adapter
  • Cast steel double helix adapter

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0023] Such as Figure 1-4 As shown, a cast steel double-helix adapter involved in this embodiment includes an adapter body 1, a joint 2 and a double helix wing 3 arranged on the adapter body 1; the two ends of the adapter body 1 are respectively arranged There are internal threads a4 and internal threads b5, and the post body 1 is connected to the joint one 2 through the internal threads b5; the joint one 2 includes a threaded rod 6, a round rod one 8 which is hollow inside and has internal threads c7, and is arranged on a circular The positioning rod 9 on one end face of the rod one 8; the length of the threaded rod 6 is greater than the length of the round rod one 8, and the two ends of the threaded rod 6 are respectively the connection end a10 and the connection end b11, and the connection end a10 is connected with the internal thread b5, and the connection The threaded rod 6 between the end a10 and the connecting end b11 is connected with the internal thread c7; the conne...

Embodiment 2

[0029] Such as Figure 5 As shown, the main structure of the cast steel double-helix adapter described in this embodiment is the same as that of Embodiment 1, the difference is that: the connecting end b11 of the threaded rod 6 is provided with a protrusion 17 to further strengthen the adapter The stability of the connection between the main body 1 and the joint one 2 is more conducive to the protection of the connection between the connecting rod and the connecting rod.

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Abstract

The invention relates to the technical field of mining equipment accessories, in particular to a cast steel double-helix adapter, the adapter body, joint one and double helix wings arranged on the adapter body; the two ends of the adapter body are respectively provided with internal threads a, internal thread b, the connecting rod body is connected to joint one through internal thread b; joint one includes threaded rod, round rod one and positioning rod; the length of the threaded rod is greater than the length of round rod one, and its two ends are connection ends a , connecting end b, connecting end a is connected with internal thread b, and the threaded rod between connecting end a and connecting end b is connected with internal thread c; the connecting rod body is provided with a blind hole used in conjunction with the positioning rod; the present invention provides The two joints used in conjunction can change the length of the post. A positioning rod is set on the joint one and matched with the blind hole on the post body for positioning and installation. In addition, it is fixed by a threaded rod so that the post body and the joint one The connection is more accurate and stable.

Description

technical field [0001] The invention relates to the technical field of mining equipment accessories, in particular to a cast steel double-helix connecting rod. Background technique [0002] The extension rod is one of the essential tools in the coal mining process. In order to meet the needs of mining, the extension rods of various structures have emerged as the times require. For example, Chinese patent CN201620425793.6 discloses a cast steel double-helix adapter, including an adapter body, the adapter body is provided with two helical fins equidistantly distributed, and the two ends of the adapter body are respectively provided with external thread joints and an internal threaded joint, the connection between the external threaded joint and the spiral fin is provided with an external thread wear-resistant protrusion, one end of the internal threaded joint is provided with an internal thread wear-resistant protrusion, and the external thread wear-resistant protrusion The w...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/22E21B17/042
CPCE21B17/0426E21B17/22
Inventor 于春雨骆伟吕骁郑春梅郝俊王保勤
Owner 山东兖能泰德重工有限公司
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