CN209818558U - Bearing seat with double-layer wall structure - Google Patents
Bearing seat with double-layer wall structure Download PDFInfo
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- CN209818558U CN209818558U CN201920530648.8U CN201920530648U CN209818558U CN 209818558 U CN209818558 U CN 209818558U CN 201920530648 U CN201920530648 U CN 201920530648U CN 209818558 U CN209818558 U CN 209818558U
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- thermal
- double
- bearing frame
- ring
- obturating
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- Shafts, Cranks, Connecting Bars, And Related Bearings (AREA)
- Mounting Of Bearings Or Others (AREA)
Abstract
The application discloses double-walled structure bearing frame, it includes bearing frame, thermal-insulated shell and the ring of obturating, the bearing frame with the ring of obturating passes through welded fastening, be equipped with the slot on the bearing frame, a tip of thermal-insulated shell inserts in the slot, another tip of thermal-insulated shell has the installation department that the cross-section is the C type, the ring of obturating inserts in the installation department and through pin joint the ring of obturating with thermal-insulated shell for form the air chamber between thermal-insulated shell and bearing frame and the ring of obturating. According to the double-wall structure bearing seat, a heat insulation shell welding structure is omitted, and the risk of insufficient structural reliability caused by the fact that 3 parts are welded at the same time through one welding seam is eliminated; meanwhile, the welding procedure is eliminated, the processing technology is simplified, and the production cost of the bearing seat is reduced.
Description
Technical Field
The application belongs to the technical field of aero-engine structural design, and particularly relates to a bearing seat with a double-wall structure.
Background
The bearing seat is used for fixing the bearing outer ring. The outer side of the wall surface of the bearing seat is high-temperature sealing gas, and lubricating oil communicated with the rear cavity is arranged in the wall surface. In order to realize the heat insulation function of lubricating oil on the inner side of the wall surface of the bearing seat, the bearing seat is required to be designed into a double-wall structure.
As shown in fig. 1, the existing double-wall bearing seat structure is composed of a bearing seat 1, a heat insulation shell 2, a sealing ring 3 and a honeycomb ring 4, wherein the bearing seat 1 and the sealing ring 3 are connected through a welding seam B, one end of the heat insulation shell 2 is inserted into a slot 11, the heat insulation shell 2, the sealing ring 3 and the honeycomb ring 4 are connected through a welding seam A, and finally an air cavity 23 is formed between the heat insulation shell 2 and the bearing seat 1 and between the sealing ring 3, so that heat insulation of lubricating oil is realized.
In the prior art, a double-wall bearing seat structure is realized by welding, a welding seam needs to be simultaneously connected with three parts, namely a heat insulation shell 1, a sealing ring 3 and a honeycomb ring 4, the welding process has high requirement, the requirements of welding positioning, part burning prevention and the like need to be simultaneously met, and the risk of insufficient reliability exists; meanwhile, due to the existence of a welding structure, special welding equipment, inspection equipment, skilled welders and the like need to be arranged, and the production cost is increased.
Disclosure of Invention
It is an object of the present application to provide a bearing housing of double-walled construction to solve any of the above problems.
The technical scheme of the application is as follows: the utility model provides a double-walled structure bearing frame, its includes the bearing frame, separates heat casing and the ring of obturating, the bearing frame with the ring of obturating passes through welded fastening, be equipped with the slot on the bearing frame, a tip of separating the heat casing inserts in the slot, another tip of separating the heat casing has the installation department that the cross-section is the C type, the ring of obturating inserts in the installation department and through pin joint the ring of obturating with separate heat casing for form the air chamber between separate heat casing and bearing frame and the ring of obturating.
In an embodiment of the application, the pins are a plurality of and are circumferentially and uniformly distributed along the axis of the bearing seat.
In one embodiment of the present application, the pin material has a hardness less than the hardness of the material of the thermal shell and/or the seal ring.
In one embodiment of the present application, the material of the pin is aluminum or an aluminum alloy, or copper or a copper alloy.
According to the double-wall structure bearing seat, a heat insulation shell welding structure is omitted, and the risk of insufficient structural reliability caused by the fact that 3 parts are welded at the same time through one welding seam is eliminated; meanwhile, the welding procedure is eliminated, the processing technology is simplified, and the production cost of the bearing seat is reduced.
Drawings
In order to more clearly illustrate the technical solutions provided by the present application, the following briefly introduces the accompanying drawings. It is to be expressly understood that the drawings described below are only illustrative of some embodiments of the invention.
Fig. 1 is a schematic view of a double-walled bearing seat structure of the prior art.
Fig. 2 is a schematic view of a double-walled bearing housing of the present application.
Fig. 3 is an external view of the bearing seat with a double-wall structure according to the present application.
Detailed Description
In order to make the implementation objects, technical solutions and advantages of the present application clearer, the technical solutions in the embodiments of the present application will be described in more detail below with reference to the drawings in the embodiments of the present application.
In order to solve the problem that reliability is not enough because a welding seam fixes three parts in the prior art, the application provides a double-wall structure bearing seat structure for positioning pins. As shown in fig. 2, the pin-positioned double-walled bearing housing structure of the present application includes a bearing housing 10, a heat insulating shell 20, a packing ring 30, and pins 40. Wherein, the bearing frame 10 links together through welding seam C with the ring 30 of obturating, open the slot 12 that has anti-C type on the bearing frame 10, the left end 22 of thermal-insulated shell 20 inserts in the slot 12, the other end of thermal-insulated shell 20 is the installation department 21 that the cross-section is the C type, have a connecting portion 31 on the ring 30 of obturating, connecting portion 31 inserts in the installation department 21, and make the ring 30 of obturating link together with the thermal-insulated shell 20 through the pin 40, finally form air chamber 32 between thermal-insulated shell 20 and bearing frame 10 and the ring 30 of obturating, but the thermal conductivity between greatly reduced gas of obturating (double-walled structure bearing frame structure lower part) and lubricating oil (double-walled structure bearing frame structure upper portion), realize the thermal-insulated to bearing chamber lubricating.
The double-walled structure bearing frame structure of this application has cancelled the welded structure of thermal-insulated shell among the prior art, and thermal-insulated shell 20's connected mode is one end pin location, and one end is pegged graft. The radial positioning of the pin side of the heat insulation shell 20 is realized through a spigot between the heat insulation shell and the sealing ring 30, and the spigot end of the heat insulation shell 20 is of a C-shaped structure, so that the stress of the heat insulation shell during working is met, and the working reliability is improved; axial positioning is achieved by means of pins 40; the other end of the heat insulation shell 20 is inserted in the slot 12, so that the axial free deformation can be met, and the internal stress of parts can be reduced.
In one embodiment of the present application, the number of the pins 40 is plural, and the pins are circumferentially and uniformly distributed on the axis of the bearing seat 10. As shown in fig. 3, which is a cross-sectional view of the bearing seat 10, 1/3 is a double-walled bearing seat structure, and in the drawing, there are two pins 40, and correspondingly, six pins in the double-walled bearing seat structure of the full-ring structure.
In one embodiment of the present application, the hardness of the material of the pins 40 should be less than the hardness of the material of the thermal shell 20 and/or the sealing ring 30 to protect the thermal shell 20 and the sealing ring 30.
In the above embodiment, the material of the pin 40 is preferably aluminum or an aluminum alloy, or copper or a copper alloy.
The bearing pedestal eliminates a welding structure of the heat insulation shell, and eliminates the risk of insufficient structural reliability caused by welding 3 parts at the same time by one welding line; meanwhile, the welding procedure is eliminated, the processing technology is simplified, and the production cost of the bearing seat is reduced.
The above description is only for the specific embodiments of the present application, but the scope of the present application is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present application should be covered within the scope of the present application. Therefore, the protection scope of the present application shall be subject to the protection scope of the claims.
Claims (4)
1. The utility model provides a double-walled structure bearing frame, its characterized in that, double-walled bearing frame structure includes bearing frame (10), thermal-insulated shell (20) and seal ring (30), bearing frame (10) with seal ring (30) are through welded fastening, be equipped with slot (12) on bearing frame (10), a tip of thermal-insulated shell (20) inserts in slot (12), another tip of thermal-insulated shell (20) has installation department (21) that the cross-section is the C type, seal ring (30) insert just connect through pin (40) in installation department (21) seal ring (30) with thermal-insulated shell (20) for form air chamber (32) between thermal-insulated shell (20) and bearing frame (10) and seal ring (30).
2. A double-walled bearing housing according to claim 1, wherein the pins (40) are plural and are circumferentially equispaced about the axis of the housing (10).
3. A double-walled bearing housing according to claim 1 or 2, characterized in that the hardness of the material of the pins (40) is less than the hardness of the material of the heat shield (20) and/or the sealing ring (30).
4. A double-walled bearing housing according to claim 3 wherein the material of the pin (40) is aluminium or an aluminium alloy, or copper or a copper alloy.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920530648.8U CN209818558U (en) | 2019-04-18 | 2019-04-18 | Bearing seat with double-layer wall structure |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201920530648.8U CN209818558U (en) | 2019-04-18 | 2019-04-18 | Bearing seat with double-layer wall structure |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209818558U true CN209818558U (en) | 2019-12-20 |
Family
ID=68880634
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201920530648.8U Active CN209818558U (en) | 2019-04-18 | 2019-04-18 | Bearing seat with double-layer wall structure |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN209818558U (en) |
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2019
- 2019-04-18 CN CN201920530648.8U patent/CN209818558U/en active Active
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