TAPERED COUPLING STRUCTURE AND ROTATING MACHINE

• US 20100200354A1
• Filed: 07/23/2009
• Published: 08/12/2010
• Est. Priority Date: 02/12/2009
• Status: Active Grant

• Current Assignee: Mitsubishi Heavy Industries Compressor Corporation (Mitsubishi Heavy Industries, Ltd.)
• Original Assignee: Mitsubishi Heavy Industries, Ltd.
• Inventors: Yanagisawa, Eiichi, Terado, Hiroki, Shinohara, Hitoshi, Yagi, Katsuki
• Granted Patent: US 8,302,754 B2
• Time in Patent Office: Days
• US Class Current: 192/66.200
• CPC Class Codes: F16D 1/092 the pair of conical mating surfaces being provided on the coupled hub and shaft
• CPC Class Codes: F16D 2001/0906 using a hydraulic fluid to clamp or disconnect, not provided for in F16D1/091
• CPC Class Codes: Y10T 403/1633 Utilizing fluid pressure

Abstract

There is provided a tapered coupling structure in which a tapered shaft can be coupled to and decoupled from a hub without the use of an O-ring. In a tapered coupling structure 10 in which a tapered shaft 20 and a hub 30 are coupled to each other, the tapered shaft 20 is provided with a taper part 21 on the side of being coupled to the hub 30, and the hub 30 is provided with a high-rigidity part 32 having a thickness in the radial direction larger than that of other regions and having a high rigidity in the radial direction. An oil groove 24 formed in the outer peripheral surface of the taper part 21 to feed oil to the coupling surfaces of the taper part 21 and the hub 3 is provided in a region corresponding to the high-rigidity part 32 in the axial direction.

Claims

1. A tapered coupling structure in which a tapered shaft and a hub are coupled to each other,

the tapered shaft being provided with a taper part on the side which is coupled to the hub;

and

the hub being provided with a high-rigidity part having a thickness in the radial direction larger than that of other regions and having a high rigidity in the radial direction, wherein

a first oil groove formed in the outer peripheral surface of the taper part or in the inner peripheral surface of the hub to feed oil to the coupling surfaces of the taper part and the hub is provided in a first region corresponding to the high-rigidity part in the axial direction.

2. The tapered coupling structure according to claim 1, wherein the high-rigidity part is arranged on the front end side of a coupling part of the taper part and the hub.

3. The tapered coupling structure according to claim 2, wherein the first oil groove is arranged on the rear end side of the center of width in the axial direction of the high-rigidity part.

4. The tapered coupling structure according to claim 1, wherein a second oil groove is formed in a second region different from the first region.

5. The tapered coupling structure according to claim 4, wherein the tapered coupling structure further comprises a connecting oil groove one end of which communicates with the second oil groove and the other end of which communicates with the first oil groove.

6. A rotating machine comprising:

a driver for delivering a rotational force;

a driven equipment rotationally driven by the output of the driver; and

a coupling structure for transmitting the output of the driver to the driven equipment, wherein

the coupling structure comprises the tapered coupling structure according to claim 1.