Emergency multilayer bearing, rotating device and working method

Abstract

The application belongs to the technical field of mechanical fittings, and provides an emergency multilayer bearing, a rotating device and a working method. The emergency multilayer bearing comprises a bearing base, an outer ring bearing, an inner ring bearing, a middle shaft and a locking device. The outer ring bearing is nested in the bearing base and can rotate relative to the bearing base. The inner ring bearing is nested in the outer ring bearing and can rotate relative to the outer ring bearing. The middle shaft is nested in the inner ring bearing and can rotate relative to the inner ring bearing. The locking device is arranged between the outer ring bearing and the bearing base and is used for being in a locking state to keep the outer ring bearing and the bearing base relatively stationary and the middle shaft and the inner ring bearing relatively rotatable in a normal condition, and being in a non-locking state to make the outer ring bearing and the bearing base relatively rotatable and the middle shaft and the inner ring bearing relatively stationary when a fault occurs between the middle shaft and the inner ring bearing.

Description

Technical Field

[0001] This invention belongs to the field of mechanical parts technology, and in particular relates to an emergency multi-layer bearing, a rotating device, and a working method. Background Technology

[0002] The statements in this section are merely background information related to the present invention and do not necessarily constitute prior art.

[0003] Bearings are common mechanical components widely used in mechanical equipment. As a component that supports rotation, bearings are considered wear parts and have a limited lifespan.

[0004] In ordinary equipment, bearings can be replaced by stopping the machine when they fail. However, the inventors discovered that in some special situations, such as nuclear energy equipment and aerospace equipment, bearings may suddenly fail and cannot be replaced in time. In such cases, emergency handling of the bearings is required, but the existing bearing structure does not have emergency performance. Summary of the Invention

[0005] In order to solve the technical problems existing in the background art, the present invention provides an emergency multi-layer bearing, a rotating device and a working method, which has the characteristics of simple emergency operation, low cost and reliable performance.

[0006] To achieve the above objectives, the present invention adopts the following technical solution:

[0007] The first aspect of the present invention provides an emergency multilayer bearing.

[0008] An emergency multilayer bearing, comprising:

[0009] Bearing base, outer ring bearing, inner ring bearing, central shaft, and locking device;

[0010] The outer ring bearing is nested inside the bearing base, and the two can rotate relative to each other;

[0011] The inner ring bearing is nested inside the outer ring bearing, and the two can rotate relative to each other;

[0012] The central shaft is nested inside the inner ring bearing, and the two can rotate relative to each other;

[0013] The locking device is disposed between the outer ring bearing and the bearing base, and is used for:

[0014] Under normal circumstances, it is in a locked state, so that the outer ring bearing and the bearing base remain relatively stationary, while the central shaft and the inner ring bearing rotate relative to each other.

[0015] When a fault occurs between the central shaft and the inner ring bearing, the bearing is in an unlocked state, causing the outer ring bearing to rotate relative to the bearing base, while the central shaft and the inner ring bearing remain relatively stationary.

[0016] In one embodiment, an annular groove is provided at the contact point between the outer cylindrical surface of the outer ring bearing and the locking device.

[0017] The advantage of the above technical solution is that the annular groove effectively prevents the tail end of the locking device from scratching the surface of the outer ring bearing when the locking device is loosened.

[0018] In one embodiment, the inner ring bearing is provided with retaining rings at both ends to fix the position of the outer ring bearing.

[0019] In one embodiment, at least one of the retaining rings at both ends of the inner ring bearing is threadedly fixed to the inner ring bearing.

[0020] The advantage of the above technical solution is that it facilitates the installation of the outer ring bearing.

[0021] In one embodiment, a locking nut is provided between the inner ring bearing and the central shaft, and the locking nut is connected to the central shaft by a thread. The locking nut is used to lock the inner ring bearing and the central shaft.

[0022] In one embodiment, the inner ring bearing has an inner conical surface at the edge of its inner hole, and the locking nut has an outer conical surface on its outer side. When the locking nut approaches the inner ring bearing via its thread, the outer conical surface contacts the inner conical surface, thereby aligning and fixing the inner ring bearing relative to the central shaft.

[0023] In one implementation, the locking nut is a loosening nut.

[0024] In one embodiment, the locking device is a locking screw.

[0025] A second aspect of the present invention provides a method for operating an emergency multilayer bearing as described above.

[0026] A method for operating an emergency multilayer bearing as described above includes:

[0027] When the emergency multi-layer bearing is in normal working condition, the locking device is adjusted to be in the locked state, so that the outer ring bearing and the bearing base remain relatively stationary, and the central shaft and the inner ring bearing rotate relative to each other.

[0028] When a fault occurs between the central shaft and the inner ring bearing, the locking device is adjusted to be in an unlocked state, so that the outer ring bearing and the bearing base rotate relative to each other, while the central shaft and the inner ring bearing remain relatively stationary.

[0029] A third aspect of the present invention provides a rotating device.

[0030] A rotating device comprising an emergency multilayer bearing as described above.

[0031] The beneficial effects of this invention are:

[0032] The emergency multi-layer bearing of the present invention includes a bearing base, an outer ring bearing, an inner ring bearing, and a central shaft nested from the outside to the inside. Any two adjacent nested layers can rotate relative to each other. When the bearing fails, simply adjust the locking device between the outer ring bearing and the bearing base to the unlocked state. This allows the outer ring bearing to rotate relative to the bearing base, while the central shaft and the inner ring bearing remain relatively stationary. This enables emergency handling of the faulty bearing. The emergency operation is simple, low-cost, and reliable.

[0033] Advantages of additional aspects of the invention will be set forth in part in the description which follows, and in part will be obvious from the description, or may be learned by practice of the invention. Attached Figure Description

[0034] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0035] Figure 1 This is a schematic diagram of the overall structural layout of the emergency multilayer bearing according to an embodiment of the present invention;

[0036] Figure 2 This is a schematic view of the locking device structure according to an embodiment of the present invention;

[0037] Figure 3 This is a schematic diagram of the outer ring bearing structure according to an embodiment of the present invention;

[0038] Figure 4 This is a schematic diagram of the inner ring bearing structure according to an embodiment of the present invention;

[0039] Figure 5 This is a schematic diagram of the locking nut portion of an embodiment of the present invention;

[0040] Among them, 1. Bearing base; 2. Outer ring bearing; 201. Annular groove; 3. Inner ring bearing; 301. Retaining ring; 302. Inner conical surface; 4. Central shaft; 5. Locking device; 6. Locking nut; 601. Outer conical surface. Detailed Implementation

[0041] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0042] It should be noted that the following detailed description is illustrative and intended to provide further explanation of the invention. Unless otherwise specified, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains.

[0043] It should be noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to limit the scope of exemplary embodiments according to the invention. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise. Furthermore, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0044] according to Figure 1 This embodiment provides an emergency multi-layer bearing, including: a bearing base 1, an outer ring bearing 2, an inner ring bearing 3, a central shaft 4, and a locking device 5.

[0045] The outer ring bearing 2 is nested inside the bearing base 1, and the two can rotate relative to each other;

[0046] The inner ring bearing 3 is nested inside the outer ring bearing 2, and the two can rotate relative to each other;

[0047] The central shaft 4 is nested inside the inner ring bearing 3, and the two can rotate relative to each other;

[0048] The locking device 5 is disposed between the outer ring bearing 2 and the bearing base 1, and is used for:

[0049] Under normal circumstances, it is in a locked state, so that the outer ring bearing 2 and the bearing base 1 remain relatively stationary, and the central shaft 4 and the inner ring bearing 3 rotate relative to each other.

[0050] When a fault occurs between the central shaft 4 and the inner ring bearing 3, they are in an unlocked state, causing the outer ring bearing 2 to rotate relative to the bearing base 1, while the central shaft 4 and the inner ring bearing 3 remain relatively stationary.

[0051] The emergency multi-layer bearing designed in this embodiment includes a bearing base, an outer ring bearing, an inner ring bearing, and a central shaft nested from the outside to the inside. Any two adjacent nested layers can rotate relative to each other. When the bearing fails, simply adjust the locking device between the outer ring bearing and the bearing base to the unlocked state. This allows the outer ring bearing to rotate relative to the bearing base, while the central shaft and the inner ring bearing remain relatively stationary. This enables emergency handling of the faulty bearing. The emergency operation is simple, low-cost, and reliable.

[0052] Figure 2A preferred embodiment of the locking device 5 is provided, which is a locking screw. The locking device 5 is preferably located inside the outer ring bearing 2.

[0053] It should be noted that in other embodiments, the locking device 5 may also adopt other existing structures, such as: a stop structure, a friction plate, etc., and those skilled in the art can make specific settings according to the actual situation.

[0054] exist Figure 3 In this design, an annular groove 201 is provided at the contact point between the outer cylindrical surface of the outer ring bearing 2 and the locking device 5. This annular groove effectively prevents the tail end of the locking device from scratching the surface of the outer ring bearing when the locking device is loosened.

[0055] exist Figure 4 In the process, the inner ring bearing 3 is provided with retaining rings 301 at both ends to fix the position of the outer ring bearing.

[0056] As a preferred embodiment, at least one of the retaining rings 301 at both ends of the inner ring bearing 3 is threadedly fixed to the inner ring bearing 3. This facilitates the installation of the outer ring bearing.

[0057] It is understood here that in other embodiments, the connection between the retaining rings at both ends of the inner ring bearing and the inner ring bearing can also be achieved by other connection methods, such as embedded fixing, thread fixing, etc. Those skilled in the art can make specific settings according to the actual situation.

[0058] according to Figure 5 In this embodiment, a locking nut 6 is provided between the inner ring bearing 3 and the central shaft 4. The locking nut 6 is connected to the central shaft 4 by a thread, and the locking nut 6 is used to lock the inner ring bearing 3 and the central shaft 4.

[0059] Combination Figure 4 The inner ring bearing 3 has an inner conical surface 302 on the inner hole edge and an outer conical surface 601 on the outer side of the locking nut 6. When the locking nut 6 approaches the inner ring bearing 3 through the thread, the outer conical surface 601 contacts the inner conical surface 302, so that the inner ring bearing 3 is centered and fixed relative to the central shaft 4.

[0060] The locking nut is a loosening nut.

[0061] It is understood here that in other embodiments, the locking method of the inner ring bearing and the central shaft may also be implemented using other existing locking methods, which will not be described in detail here.

[0062] In one or more embodiments, a method for operating an emergency multilayer bearing as described above is provided, specifically including:

[0063] When the emergency multi-layer bearing is in normal working condition, the locking device is adjusted to be in the locked state, so that the outer ring bearing and the bearing base remain relatively stationary, and the central shaft and the inner ring bearing rotate relative to each other.

[0064] When a fault occurs between the central shaft and the inner ring bearing, the locking device is adjusted to be in an unlocked state, so that the outer ring bearing and the bearing base rotate relative to each other, while the central shaft and the inner ring bearing remain relatively stationary.

[0065] In one or more embodiments, a rotating device is also provided, comprising an emergency multilayer bearing as described above.

[0066] It should be noted that, apart from the emergency multi-layer bearing, all other structures in the rotating equipment are existing structures and will not be described in detail here.

[0067] The above description is merely a preferred embodiment of the present invention and is not intended to limit the invention. Various modifications and variations can be made to the present invention by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the scope of protection of the present invention.

Claims

1. An emergency multi-layer bearing, characterized in that, include: Bearing base, outer ring bearing, inner ring bearing, central shaft, and locking device; The outer ring bearing is nested inside the bearing base, and the two can rotate relative to each other; The inner ring bearing is nested inside the outer ring bearing, and the two can rotate relative to each other; The central shaft is nested inside the inner ring bearing, and the two can rotate relative to each other; A locking nut is provided between the inner ring bearing and the central shaft. The locking nut is connected to the central shaft by a thread. The locking nut is used to lock the inner ring bearing and the central shaft. The inner ring bearing has an inner conical surface on the inner hole edge, and the locking nut has an outer conical surface on the outer side. When the locking nut approaches the inner ring bearing through the thread, the outer conical surface contacts the inner conical surface, so that the inner ring bearing is centered and fixed relative to the central shaft. The locking device is disposed between the outer ring bearing and the bearing base, and is used for: Under normal circumstances, the locking device is adjusted to be in the locked state, so that the outer ring bearing and the bearing base remain relatively stationary, while the central shaft and the inner ring bearing rotate relative to each other. When a fault occurs between the central shaft and the inner ring bearing, the locking device is adjusted to be in an unlocked state, so that the outer ring bearing and the bearing base rotate relative to each other, while the central shaft and the inner ring bearing remain relatively stationary.

2. The emergency multi-layer bearing as described in claim 1, characterized in that, An annular groove is provided at the contact point between the outer cylindrical surface of the outer ring bearing and the locking device.

3. The emergency multi-layer bearing as described in claim 1 or 2, characterized in that, The inner ring bearing has retaining rings at both ends to fix the position of the outer ring bearing.

4. The emergency multi-layer bearing as described in claim 3, characterized in that, At least one of the retaining rings at both ends of the inner ring bearing is threadedly fixed to the inner ring bearing.

5. The emergency multi-layer bearing as described in claim 1, characterized in that, The locking nut is a loosening nut.

6. The emergency multi-layer bearing as described in claim 1, characterized in that, The locking device is a locking screw.

7. A method for operating an emergency multi-layer bearing as described in any one of claims 1-6, characterized in that, include: When the emergency multi-layer bearing is in normal working condition, the locking device is adjusted to be in the locked state, so that the outer ring bearing and the bearing base remain relatively stationary, and the central shaft and the inner ring bearing rotate relative to each other. When a fault occurs between the central shaft and the inner ring bearing, the locking device is adjusted to be in an unlocked state, so that the outer ring bearing and the bearing base rotate relative to each other, while the central shaft and the inner ring bearing remain relatively stationary.

8. A rotating device, characterized in that, Including the emergency multilayer bearing as described in any one of claims 1-6.

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