Three-dimensional hydraulic oscillator

Patent metadata

Field	Value
Publication number	US-11002094-B2
Application number	US-201916517427-A
Country	US
Kind code	B2
Filing date	Jul 19, 2019
Priority date	Aug 7, 2018
Publication date	May 11, 2021
Grant date	May 11, 2021

Abstract

A three-dimensional hydraulic oscillator includes an upper casing, a lower casing screwed with the upper casing, an upper joint screwed with the upper casing, a lower joint screwed with the lower casing and a screw. An upper rotating shaft is mounted in the upper casing. A turbine group is mounted on the upper rotating shaft. An upper cam is fixed to the upper rotating shaft. A lower cam is movably mounted in the upper casing. The upper cam contacts with the lower cam. The screw is mounted in the upper casing and fixed to the lower cam. A lower rotating shaft is mounted in the lower casing. An eccentric block is fixed on the lower rotating shaft. A lower roulette is fixed to the lower rotating shaft. A shaft cap is disposed above the lower roulette. An upper roulette is mounted on the screw and meshed with the lower roulette.

First claim

What is claimed is:

1. A three-dimensional hydraulic oscillator comprising:
an upper casing;
a lower casing screwed with the upper casing;
an upper joint screwed with an end of the upper casing;
a lower joint screwed with an end of the lower casing; and
a screw;
wherein an upper rotating shaft is mounted in the upper casing by symmetrically disposed central bearings, a turbine group is mounted on the upper rotating shaft between the centralizing bearings, an upper cam is fixed to a lower end of the upper rotating shaft, a lower cam is movably mounted in the upper casing below the upper cam, the upper cam contacts with and connects to the lower cam, the screw is mounted in the upper casing below the lower cam through a spring, the screw is fixed to the lower cam, a lower rotating shaft is mounted in the lower casing below the spring by symmetrically disposed bearings, an eccentric block is fixed on the lower rotating shaft between the bearings, a lower roulette is fixed to the top of the lower rotating shaft, a shaft cap is disposed above the lower roulette, and the shaft cap is screwed to the lower rotating shaft, an end of the screw extends through the shaft cap and the lower roulette into the lower rotating shaft, above the lower roulette, an upper roulette is mounted on the screw in the shaft cap, the upper roulette, and the lower roulette are meshed with each other.

2. The three-dimensional hydraulic oscillator of claim 1 , wherein the lower rotating shaft is a hollow body.

3. The three-dimensional hydraulic oscillator of claim 1 , wherein the upper cam and the lower cam are respectively T-shaped, the upper cam and the lower cam are respectively constituted by a cam disc and a cam rod, the cam rod is fixed at the center position of the cam disc.

4. The three-dimensional hydraulic oscillator of claim 3 , wherein the cam rod is a hollow body, a top of the cam rod is tapered.

5. The three-dimensional hydraulic oscillator of claim 1 , wherein the upper roulette and the lower roulette are respectively in the shape of a disc, the upper roulette and the lower roulette are respectively provided with transmission teeth, the upper roulette and the lower roulette are intermittently meshed with each other by the engagement of the transmission teeth.

6. The three-dimensional hydraulic oscillator of claim 5 , wherein a center of the upper roulette defines a rectangular fitting hole, the upper roulette is mounted on the screw through the fitting hole.

7. The three-dimensional hydraulic oscillator of claim 5 , wherein the lower roulette defines a center hole for passing through the screw.

Assignees

• Univ Yangtze

Inventors

• Feng Ding
• Wang Peng
• Zhao Yu
• Wang Zhe
• Tu Yi-Liu

Classifications

• B06B1/18 Primary

  wherein the vibrator is actuated by pressure fluid (B06B1/20 takes precedence) · CPC title

• E21B28/00 Primary

  Vibration generating arrangements for boreholes or wells, e.g. for stimulating production ({for fishing for or freeing objects E21B31/005;} for transmitting measuring-signals E21B47/14; for geophysical measurements G01V1/02) · CPC title

• E21B7/24 Primary

  Drilling using vibrating or oscillating means, e.g. out-of-balance masses (percussion drilling E21B1/00) · CPC title

• E21B31/005

  using vibrating or oscillating means · CPC title

• E21B7/124

  with underwater tool drive prime mover, e.g. portable drilling rigs for use on underwater floors · CPC title