Petroleum drilling trajectory-controlled harmonic gear transmission device

Abstract

The invention relates to a petroleum drilling trajectory-controlled harmonic gear transmission device. The device is characterized by being provided with a rigidity gear (1), a flexible gear (2), a bearing (3), a wave generator (4) and a hollow shaft (5), wherein the rigidity gear (1) is provided with an inner gear ring; the flexible gear (2) is provided with an outer gear ring; the wave generator (4) is provided with an elliptic cam and is arranged on the hollow shaft (5); the bearing (3) is between the wave generator (4) and the flexible gear (2); the rigidity gear (1) is arranged on the outer ring of the flexible gear (2); the flexible gear (2) is provided with two less teeth than the rigidity gear (1); and the flexible gear (2) is formed by processing a 30 chromium magnesium silicon material. The harmonic gear transmission device has small size, light weight and high transmission efficiency, can be suitable for a narrow underground space, is transmitted stably, and is operated safely and reliably; and the flexible gear is made of flexible gear materials with high fatigue resistance, so that the service life of the device is greatly prolonged.

Description

Technical field: [0001] The invention relates to a harmonic gear transmission device for petroleum drilling trajectory control, belonging to the technical field of petroleum machinery power transmission mechanism design. Background technique: [0002] Harmonic transmission is a general term for a transmission device newly developed in modern times that relies on the elastic deformation of the intermediate flexible member to realize motion or power transmission. The deformation process of the intermediate flexible member is basically a symmetrical harmonic. According to the different requirements of use, the harmonic drive can be divided into different types, mainly including: harmonic gear drive, harmonic screw drive, harmonic friction drive, Harmonic continuously variable transmissions and harmonic couplings, etc., among which harmonic gear transmission is the most widely used. [0003] In order to save oil development costs and increase oil production, oil and gas product...

AI Technical Summary

Problems solved by technology

Due to the bulky size of ordinary reduction mechanisms, low transmission efficiency and low load-carrying capacity for underground work, and the inability to transmit motion in confined spaces and oil bath conditions, and it is difficult to withstand extremely harsh environments such as high temperature and high pressure, the existing gear reduction mechanisms Far from being able to meet the requirements of a steplessly adjustable wellbore trajectory control tool, it is urgent to study a deceleration mechanism with a small volume, a large transmission ratio, and a large load-carrying capacity to adapt to the current drilling of various complex-structured wells and various wellbores. Trajectory Control Tool Requirements

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