Novel sphere cylinder type cardan shaft and screw drilling tool
A cardan shaft and ball column technology, used in drill pipes, drill pipes, drilling equipment, etc., can solve problems such as short life of cardan shafts, and achieve the effects of improving bearing capacity, stable and efficient torque transmission, and increased bearing area.
Inactive Publication Date: 2018-05-04
TIANJIN DEHUA GASOLINEEUM EQUIP MFG
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Problems solved by technology
[0005] The purpose of the present invention is to provide a new type of ball-column type cardan shaft and screw drilling tool to solve the problem of rapid failure and short life of the cardan shaft in the prior art
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[0018] The present invention will be described in further detail below in conjunction with specific examples. It should be understood that the specific embodiments described here are only used to explain the present invention, not to limit the present invention.
[0019] It should be noted that the terminology used here is only for describing specific implementations, and is not intended to limit the exemplary implementations according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should also be understood that when the terms "comprising" and / or "comprising" are used in this specification, it indicates There are features, steps, operations, parts or modules, components and / or combinations thereof.
[0020] It should be noted that the terms "first" and "second" in the specification and claims of the present application are used to distinguish similar obj...
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The invention provides a novel sphere cylinder type cardan shaft. The novel sphere cylinder type cardan shaft includes a moving hinge, a connecting rod and a sphere cylinder type hinge structure; theupper end of the moving hinge is connected to a motor in an externally threaded mode, and the lower end is connected to the connecting rod through the sphere cylinder type hinge structure; and the sphere cylinder type hinge structure includes sphere cylinders, ball heads, ball seats, compression rings, rubber boots, locking glands, and hose clamps, wherein, the sphere cylinders are mid-cylindricaltypes with hemispheres at both ends, the upper halves of the sphere cylinders are embedded in grooves of the moving hinge, and the lower halves are laid in the grooves of the connecting rod. According to the novel sphere cylinder type cardan shaft, the sphere cylinders are used as bearing parts, the bearing area is greatly increased compared with balls, the wear resistance and the bearing capacity are greatly improved, and the transmission of the torque is more stable and efficient, thereby solving the problems of low bearing capacity, bad wear resistance, and short service life, prolonging the product life and improving drilling safety and drilling efficiency.
Description
technical field [0001] The invention is applied in the technical field of petroleum drilling, and in particular relates to a novel ball-column type cardan shaft and a screw drilling tool. Background technique [0002] The screw drilling tool is a volumetric downhole power drilling tool that uses drilling fluid as the power source and converts the fluid pressure energy into mechanical energy. When the mud pumped by the mud pump flows through the bypass valve and enters the motor, a certain pressure difference is formed at the inlet and outlet of the motor, which pushes the rotor to rotate around the axis of the stator, and transmits the speed and torque to the drill bit through the cardan shaft and the transmission shaft , so as to realize the drilling operation. Drilling with screw drilling tools has many advantages compared with conventional drilling, such as greatly reduced drill pipe wear and high mechanical penetration speed. It is the main tool for drilling directiona...
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IPC IPC(8): E21B17/20E21B4/02
CPCE21B17/20E21B4/02
Inventor 李群李鹏张国辉武磊
Owner TIANJIN DEHUA GASOLINEEUM EQUIP MFG