Speed reduction tool for achieving large transmission ratio through harmonic gear

A technology of harmonic gear and large transmission ratio, applied in the direction of transmission, transmission parts, fluid transmission, etc., can solve the problem of small transmission ratio of worm gear reducer, reduce speed, improve drilling efficiency, and reduce vibration impact Effect

Active Publication Date: 2017-04-26
重庆桐雨石科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to explore and solve the problem of the small transmission ratio of the existing worm gear reducer, the present invention provides a reduction tool that uses harmonic gears to achieve a large transmission ratio

Method used

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  • Speed reduction tool for achieving large transmission ratio through harmonic gear
  • Speed reduction tool for achieving large transmission ratio through harmonic gear
  • Speed reduction tool for achieving large transmission ratio through harmonic gear

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Experimental program
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Embodiment Construction

[0013] The present invention will be further described below in conjunction with accompanying drawing:

[0014] See attached figure 1 , using harmonic gears to achieve a large transmission ratio reduction tool, fixedly installed on the upper part of the drill bit through threaded connection, which includes turbine assembly, harmonic gear assembly, cardan shaft assembly and shock absorption assembly, in the harmonic gear assembly The front end of the cardan shaft assembly is connected to the cardan shaft assembly, the front end of the cardan shaft assembly is connected to the shock absorber assembly, and the rear end of the harmonic gear is connected to the turbine assembly; the turbine assembly includes an upper joint 1, an anti-drop cap 2, an anti-drop Joint 3, supporting ring 4, positioning sleeve a5, upper cock 6, turbine shaft 7, round head flat key 8, turbine stator 9, turbine rotor 10, lower cock 11, turbine housing 12, duplex joint a13, sealing cock 14 , Install the su...

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Abstract

The invention relates to a speed reduction tool for achieving the large transmission ratio through a harmonic gear, and belongs to the field of petroleum drilling. The speed reduction tool is installed to the upper portion of a drill bit through threaded connection and comprises a turbine assembly, a harmonic gear assembly, a universal shaft assembly and a damping assembly. The harmonic gear assembly is composed of an oval harmonic producer used as power input, a flexible gear used as power output and a rigid gear fixed to a shell. An input shaft is in interference fit with the harmonic producer, and the flexible gear is subjected to controllable elastic deformation through the harmonic producer to be in an oval shape also. According to the speed reduction tool for achieving the large transmission ratio through the harmonic gear, the tooth number of the rigid gear is slightly larger than that of the flexible gear in harmonic gear transmission, the formula of the transmission ratio is shown in the description, ZR is the tooth number of the flexible gear, ZG is the tooth number of the rigid gear, meanwhile, the engaged tooth number is large, the characteristics of the large transmission ratio can be achieved, the rotating speed of a turbine drill is effectively reduced, the torque is greatly increased, and the drilling efficiency of the turbine drill is improved.

Description

technical field [0001] The invention relates to a reduction tool for turbo drilling tools in the field of petroleum drilling, which utilizes harmonic gears to realize a large transmission ratio. Background technique [0002] Improving the efficiency of oil drilling operations is the key to shortening the well construction period and reducing drilling costs, while the advanced turbodrilling tool is a downhole power drilling tool with strong power output, and the turbodrilling tool is also resistant to high temperature and high pressure, and is suitable for a wide range of formations. It is a very good drilling tool. However, due to the disadvantages of high speed and low torque of conventional turbodrills, it is not easy to match the speed of existing roller cone bits, and the torque is not enough when used in conjunction with PDC bits or TSP bits, so the drilling efficiency of turbodrills It is greatly restricted, which also makes the drilling cycle cannot be effectively sh...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F16H47/06F16H57/028
CPCF16H47/06F16H57/028
Inventor 田家林林晓月杨琳杨应林张堂佳朱志
Owner 重庆桐雨石科技有限公司
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