Protection method for end of large-diameter threaded workpiece

A large-diameter, threaded technology, applied in the field of workpiece protection devices, can solve the problem that the external thread of the workpiece is easily damaged, and achieve the effect of preventing thread damage and reducing deformation

Inactive Publication Date: 2016-06-22
邱晓霞
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to overcome the problem that the external threads of the cylindrical workpieces of petroleum machinery are easily damaged during transportation and storage after processing, and provide a method for protecting the ends of large-diameter threaded workpieces

Method used

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  • Protection method for end of large-diameter threaded workpiece

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Embodiment

[0020] Such as figure 1 As shown, the present invention includes a protective cover body, the protective cover body is composed of a top surface 1 and a side wall 2, and its overall shape is a truncated cone without a bottom surface, and the inner surface of the side wall of the protective cover body is provided with threads, which are connected to the workpiece end. The outer thread of the top surface is matched with the external thread, and an oil injection hole 5 is provided at the edge of the top surface 1; a stacking ring 3 parallel to the top surface 1 is connected to the lower end of the side wall. The diameter of the bottom of the cover body is matched, and three stacking platforms 4 protruding from the stacking ring 3 are arranged on the upper surface of the stacking ring 3 , and the three stacking platforms 4 are evenly distributed on the stacking ring 3 .

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Abstract

The invention discloses a protection method for the end of a large-diameter threaded workpiece. A protecting cover body is included. The protecting cover body is composed of a top face (1) and a sidewall (2), and the whole protecting cover body is in a circular truncated cone shape. The interior of the protecting cover body is of a cavity structure. An internal thread matched with an external thread of the workpiece is arranged on the sidewall (2). The whole protecting cover body is in the circular truncated cone shape, and the internal thread is arranged in the protecting cover body, and the thread of the protecting cover body is embedded into the thread pitch of the thread on the surface of the workpiece, radial and axial deformation of the thread of the workpiece can be effectively reduced, and damage to the thread of the workpiece due to collision is prevented. A stacking ring is arranged at the bottom of the sidewall of the protecting cover body, so that transportation and storage of the protecting cover body are facilitated. Stacking tables are arranged on the stacking ring and can maintain the distance between stacking rings of protecting cover bodies, tools or hands can conveniently stretch into spaces between the protecting cover bodies, and the purpose of convenient separation is achieved. An oil filling hole is formed in the top face of the protecting cover body, and long-term maintenance of the workpiece is facilitated.

Description

technical field [0001] The invention relates to a workpiece protection device after steel processing, in particular to a method for protecting the end of a large-diameter threaded workpiece. Background technique [0002] Among the components of petroleum machinery, especially in underground tools, most of the workpieces are cylindrical as a whole, such as screw drilling tools, while drilling jars, super jars, conventional coring tools, hydraulic accelerators, salvage cup, strong magnetic overshot, fishing male cone, female fishing cone, reverse circulation fishing blue, retractable slip overshot, lifting nipple, integral short drill pipe, kelly cock valve, arrow back pressure valve, Drilling tool stabilizers, etc., the above workpieces are all made of forged blanks through machining, and both ends or one of the formed workpieces have internal or external threads. Among them, the screw drilling tool is a volumetric downhole power drilling tool that uses drilling fluid as the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): B65D59/00
Inventor 邱晓霞
Owner 邱晓霞
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