JPH0249541Y2 - - Google Patents

Description

[Detailed Description of the Invention] Technical Field of the Invention The present invention relates to a gyroscope rotor device, and particularly to a gyroscope rotor device that can be disassembled while a bearing inner ring is fixed to the rotor.

Technical background and problems thereof An example of a conventional gyro rotor device will be explained with reference to FIG. In this example, as shown,
Bearing inner rings 2 and 2' are fitted to both ends of a rotating shaft 1-1 of a rotor 1 of the gyro, respectively, and both are fixed by nuts 4 and 4'. One bearing outer ring 3
is fitted into the case 7 to which the stator 6 is fixed,
The bearing outer ring 3' is fixed to the case 7 by the lid 5, and the other bearing outer ring 3' is fitted into the other case 8 and fixed to the case 8 by the lid 5'. Case 7 and case 8 are coupled together at their outer peripheries with bolts 9 or the like. In addition, the inner diameter of the rotor-side shoulders of the cases 7 and 8, where the end surfaces of the bearing outer rings 3 and 3' touch, has a slight clearance 7' and 8' from the rotating shaft 1-1 to prevent lubricant leakage. It has a certain structure.
In the figure, reference numeral 10 indicates balls that are disposed between the bearing inner rings 2, 2' and the bearing outer rings 3, 3', respectively, and constitute the bearing.

In such a conventional gyro rotor device, the bolt 9 that temporarily connects the two cases 7 and 8 is
Even if the bearing inner rings 2 and 2' were removed from the rotating shaft 1-1 of the rotor 1, it could not be disassembled. After removing the excitation vibration), the bearing inner rings 2, 2' must be removed and reassembled, which leads to an increase in assembly time, and removing the bearing inner rings 2, 2' causes the balance to be disrupted. The amount of vibration increases,
This shortened the life of the bearing. Furthermore, even during periodic overhauls onboard ships, the bearing inner rings 2 and 2' must be removed in order to clean the bearings and replace the lubricant, resulting in a longer overhaul time. It was hot.

Purpose of the Invention The present invention has been made by focusing on these conventional problems, and aims to provide a gyroscope rotor device that can be disassembled while the inner ring of the bearing is fixed to the rotor.

Summary of the invention According to the invention, a gyroscope rotor device is disclosed which has a structure in which the gyroscope rotor device can be disassembled while the bearing inner ring is fixed to the rotating shaft of the rotor.

Embodiment of the invention Hereinafter, an embodiment of the invention will be described with reference to FIG. In FIG. 2, the same reference numerals as in FIG. 1 indicate the same elements, and detailed explanation thereof will be omitted for the sake of brevity.

Also in the embodiment of the present invention shown in FIG.
are fitted and both are fixed by nuts 4, 4', one bearing outer ring 3 is fitted into a case 7 to which a stator 6 is fixed and fixed by a lid 5, and the other bearing outer ring 3' is fitted into the case 8 and fixed by a lid 5', and the cases 7 and 8 are connected at their outer peripheries with bolts 9 or the like.

In the present invention, the inner diameter R of the rotor-side shoulders 7'' and 8'' of the cases 7 and 8, which the end surfaces of the bearing outer rings 3 and 3' touch, is set to maintain the effect of preventing lubricant leakage, as shown in the figure. However, while the bearing inner rings 2, 2' are fixed to the rotating shaft 1-1 of the rotor 1, both cases 7,
In order to be able to disassemble the gyroscope rotor device by simply releasing the coupling between bearing inner rings 2 and 8,
2' is larger than the outer diameter r of the land portions 2a, 2a'.

Effects of the invention According to the invention having the structure described above, the bearing inner ring 2,
Since the outer diameter r of the bearing 2' is smaller than the inner diameter R of the shoulders 7'' and 8'', the bearing inner rings 2 and 2' are connected to the rotating shaft 1 of the rotor 1.
Since the gyroscope rotor can be disassembled while fixed in position 1, the next step of assembly can be carried out immediately after balancing, leading to a reduction in assembly time.Since the balance is not lost, vibration is eliminated and the bearing life is extended. will be extended dramatically.
In addition, even during periodic overhauls on board the ship, it is easy to disassemble, leading to a reduction in overhaul time, and it also has great practical effects in that the balance does not collapse and the original balance state can be maintained. .

[Brief explanation of the drawing]

Figure 1 is a cross-sectional view of a conventional gyro rotor;
The figure is a sectional view of the gyroscope rotor of the present invention. In the figure, 1 is the rotor, 1-1 is the rotating shaft, 2,
2' is the bearing inner ring, 3, 3' is the bearing outer ring, 4, 4' is the nut, 5, 5' is the lid, 6 is the stator, 7, 8 is the case, r is the outer diameter of the bearing inner ring, R is the case 7 ,8
The inner diameters of the shoulders are shown respectively.

Claims (1)

[Scope of utility model registration request] A rotor having a rotating shaft with bearing inner rings fitted and fixed at both ends, and bearing outer rings fitted in corresponding positions of each of the bearing inner rings and connected to each other at the outer periphery to house the rotor inside. A gyroscope rotor device comprising two cases, wherein the inner diameters of the rotor-side shoulders of the two cases in contact with the end surfaces of the bearing outer rings are each larger than the outer diameters of the land portions of the respective bearing inner rings. .