CN213176474U - Double-layer vibration-damping radial sliding bearing with tilting pad - Google Patents
Double-layer vibration-damping radial sliding bearing with tilting pad Download PDFInfo
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- CN213176474U CN213176474U CN202021903869.4U CN202021903869U CN213176474U CN 213176474 U CN213176474 U CN 213176474U CN 202021903869 U CN202021903869 U CN 202021903869U CN 213176474 U CN213176474 U CN 213176474U
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Abstract
The utility model discloses a radial slide bearing of double-deck damping formula tilting pad, including bearing body, buffer layer and axle bush layer, the buffer layer is hugged closely at the internal surface of bearing body, and the internal surface at the buffer layer is established on the axle bush layer, and the axle bush layer comprises a plurality of lath axle bushes, and a plurality of lath axle bushes distribute along buffer layer circumference, have formed the medium cistern between the adjacent lath axle bush. Two sides of the batten bearing bush, which are parallel to the axis of the mounting shaft, are movable, and when one side of the batten bearing bush is pressed to slightly move towards the direction of the shock absorption layer, the other side of the batten bearing bush reversely slightly moves. The bearing bush layer is composed of a plurality of lath bearing bushes and is adhered to the vibration reduction layer, the lath bearing bushes can swing to a certain extent along with different rotating speeds or loads in the working process, the supporting flexibility is increased, the surface pressure is equal due to the shape adaptability, a dynamic liquid film is promoted to be formed, the bearing rigidity of the liquid film is enhanced, the capacity of absorbing vibration energy is increased, and the vibration reduction layer has excellent vibration reduction and noise reduction characteristics.
Description
Technical Field
The utility model relates to a bearing specifically relates to a tilting pad slide bearing.
Background
The tilting pad sliding bearing is generally composed of 3-6 arc-shaped pad blocks capable of freely tilting on a pivot, so that the tilting pad sliding bearing is also called a movable pivot multi-pad supporting bearing and a swinging tilting pad bearing, the pad blocks can adaptively swing along with different rotating speeds, loads and bearing temperatures, a plurality of oil films are formed around a shaft neck, and the pressure of each oil film is concentrated and points to a center.
The prior sliding bearing has the following defects: firstly, the inner lubricating layer adopts a single-layer material structure, and the bearing wear is easily accelerated when the load is abnormal in the shaft work due to poor installation, so that the noise is generated, and the service life of the bearing is influenced;
secondly, traditional slide bearing, the interior lubricating layer adopts single-deck material structure, and the damping performance in the course of the work is influenced by material hardness, and damping noise reduction performance greatly reduced when using the bearing material of higher hardness. For example, the national intellectual property office discloses a patent document with publication number CN111365364A at 03/07/2020, and discloses a tilting pad dynamic pressure bearing, which comprises a bearing outer ring, a plurality of pads and a plurality of sets of mounting assemblies, wherein the surfaces of the pads, which are in contact with the spindle shaft diameter, are sliding surfaces, and oil collecting grooves are arranged on the sliding surfaces of the pads, and can collect partial pressure lubricating fluid on the sliding surfaces and then feed back the lubricating fluid into oil cavities arranged on the back surfaces of the pads through oil holes to form supporting force for the pads; the middle part of the tile is provided with a deformation structure which divides the tile into two blocks; the mounting assembly applies radial elastic pressing force to the tile; when the bearing works, under the action of the bearing force of an oil cavity on the back surface of the pad block, the corresponding local block of the pad block overcomes the radial elastic pressing force and the main shaft load force, and the bearing bush tilts by taking the deformation structure as a fulcrum to realize tilting of the bearing bush to form a convergence space; when the bearing is used, the sliding surface 21 of the pad 2 is coaxial with and contacts the surface of the main shaft 4, oil film pressure is generated on the sliding surface 21 of the pad 2 according to the fluid lubrication theory when the main shaft 4 rotates, so that the contact surface of the pad 2 and the main shaft 4 is separated, and the oil film pressure becomes the radial bearing capacity or the radial thrust bearing capacity of the bearing. The main shaft 4 rotates in the direction of an arrow N, lubricating fluid is brought into a bearing inlet gap to form a flow Q, the flow is extruded into an internal pressure oil film in the flowing process along the sliding surface 21, the shaft diameter surface of the main shaft 4 is separated from the surface of the pad 2 to meet the bearing work requirement of the bearing, and the internal pressure distribution of the whole sliding surface 21 is increased rapidly from small to large. Because the pressure at the right inlet is still small, the supporting force fed back by the oil gathering groove 22 and the oil cavity 27 is small and is not enough to push the right part of the pad 2 to displace, so that the right half of the pad close to the bearing inlet gap is pressed against the inner surface of the bearing outer ring. The above patent documents adopt a single-layer structure, and are liable to accelerate bearing wear and noise generation due to poor vibration damping performance.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects, the utility model aims to provide a double-layer vibration damping type tilting pad radial sliding bearing with good vibration damping performance and low noise.
In order to solve the technical problem, the utility model discloses the technical scheme who adopts is:
double-deck damping formula tilting pad radial sliding bearing, including bearing body, buffer layer and axle bush layer, the buffer layer hugs closely at the internal surface of bearing body, the internal surface at the buffer layer is established to the axle bush layer for with installation axle surface direct contact, the axle bush layer comprises a plurality of lath axle bushes, and a plurality of lath axle bushes distribute along the buffer layer circumference, has formed the medium cistern between the adjacent lath axle bush.
Furthermore, a plurality of clamping protrusions are distributed on the outer surface of the shock absorption layer at intervals along the circumferential direction, a plurality of clamping limiting dovetail grooves corresponding to the clamping protrusions are arranged on the inner surface of the bearing body, and the clamping protrusions are clamped in the corresponding clamping limiting dovetail grooves.
Furthermore, inserting grooves are circumferentially distributed on the inner surface of the damping layer at intervals, inserting parts are arranged on the outer surface of the batten bearing bush and are inserted into the corresponding inserting grooves.
Furthermore, two sides of the bearing bushes are movable, wherein the two sides are parallel to the axis of the mounting shaft, and under the action of the mounting shaft, when one side of each bearing bush is pressed to slightly move towards the direction of the shock absorption layer, the other side of each bearing bush reversely slightly moves.
Furthermore, a plurality of axial through holes are distributed in the shock absorption layer at intervals along the circumferential direction, and medium liquid is filled in the axial through holes.
Furthermore, the axial through hole is formed in the position, close to the clamping protrusion, of the shock absorption layer.
Furthermore, the mounting shaft contact surface of the lath bearing bushes is an arc-shaped surface, the mounting shaft contact surfaces of the lath bearing bushes are positioned on the same circle, and a medium liquid groove formed between every two adjacent lath bearing bushes is a V-shaped groove.
Furthermore, the installation axle contact surface of lath axle bush be the plane, the tank bottom surface of the medium cistern that forms between the adjacent lath axle bush is the internal surface of buffer layer, is equipped with the V-arrangement groove on the terminal surface of lath axle bush.
Further, the shock absorbing layer is made of an elastic material; the medium liquid is water or environment-friendly lubricating oil.
Further, the bearing bush layer is bonded to the shock absorption layer.
The beneficial effects of the utility model reside in that:
because the bearing bush layer is composed of a plurality of lath bearing bushes and is inserted and connected on the vibration reduction layer, the lath bearing bushes can swing to a certain extent along with different rotating speeds or loads in the working process, the supporting flexibility is increased, the vibration energy absorption capacity is improved, the vibration reduction performance is improved, radial loads in all directions can be borne, the stability is improved, and the noise is reduced.
The contact surface of the mounting shaft of the lath bearing bush can be in a plane shape, the plane-shaped lath bearing bush can promote the formation of a hydrodynamic lubrication film because the water wedge angle is close to the minimum, and meanwhile, the contact form between the mounting shaft and the lath bearing bush is changed from surface contact into line contact, so that the contact area is reduced, the lubrication effect is enhanced, and the noise is reduced.
Because the axial through hole is added on the vibration reduction layer, when the axial through hole is filled with the medium liquid, the bearing is under load, particularly impact load, the bearing bush material absorbs part of the load elastically, the rest of the load is transmitted to the medium liquid with certain pressure, and the pressure medium liquid is subjected to viscous damping to dissipate vibration energy, so that the vibration reduction and noise reduction effects are realized, the medium liquid flows, heat generated by friction and internal power consumption of the bearing bush material is taken away, and the temperature of the bearing bush can be reduced.
Drawings
The invention will be further explained with the aid of the accompanying drawings, in which, however, the embodiments in the drawings do not constitute any limitation to the invention, and for a person skilled in the art, without inventive step, further drawings can be obtained in accordance with the following drawings:
fig. 1 is a schematic structural view of the present invention;
FIG. 2 is a cross-sectional view taken along line A-A of FIG. 1;
FIG. 3 is an enlarged view taken at D of FIG. 2;
FIG. 4 is an enlarged view of the point B shown in FIG. 1;
FIG. 5 is an enlarged view at C of FIG. 1;
fig. 6 is a schematic structural view of the sliding bearing when the slat bearing shell of the present invention is a plane;
fig. 7 is an enlarged view at E shown in fig. 6.
In the figure: 1. a bearing body; 2. A shock-absorbing layer; 3. A bearing shell layer; 4. A slat bearing shell; 5. Mounting a shaft contact surface; 6. a medium liquid tank; 7. clamping the bulges; 8. clamping and connecting the limiting dovetail groove; 9. inserting grooves; 10. a plug-in part; 11. an axial through hole; 12. a flange; 13. one side edge; 14. the other side edge; 15. v-shaped grooves.
Detailed Description
In order to make the technical solutions of the present invention better understood, the following detailed description of the present invention is provided with reference to the accompanying drawings and specific embodiments, and it should be noted that the embodiments and features of the embodiments of the present invention can be combined with each other without conflict.
In the description of the present invention, it is to be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper surface", "lower surface", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "forward", "reverse", "axial", "radial", "circumferential", and the like, indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are used only for convenience of describing the present invention and simplifying the description, but do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention.
As shown in fig. 1 and 2, the double-layer vibration damping type tilting pad radial sliding bearing comprises a bearing body 1, a damping layer 2 and a bearing pad layer 3, wherein a flange 12 is arranged at one end of the bearing body 1. The damping layer 2 is tightly attached to the inner surface of the bearing body 1, and the bearing bush layer 3 is arranged on the inner surface of the damping layer 2 and is used for being in direct contact with the surface of the mounting shaft to form a medium liquid groove between adjacent lath bearing bushes.
As shown in fig. 3, a plurality of clamping protrusions 7 are distributed on the outer surface of the damping layer 2 at intervals along the circumferential direction, a plurality of clamping limiting dovetail grooves 8 corresponding to the clamping protrusions 7 are arranged on the inner surface of the bearing body 1, and the clamping protrusions 7 are clamped in the corresponding clamping limiting dovetail grooves 8.
As shown in fig. 4, the bearing bush layer 3 is composed of a plurality of bearing bushes 4, the plurality of bearing bushes 4 are circumferentially distributed along the damping layer 2, the mounting shaft contact surfaces 5 of the plurality of bearing bushes are arc-shaped surfaces, the mounting shaft contact surfaces 5 of the plurality of bearing bushes are located on the same circle, and the medium liquid groove 6 formed between adjacent bearing bushes 4 is a V-shaped groove.
Inserting grooves 9 are circumferentially distributed on the inner surface of the shock absorption layer 2 at intervals, inserting parts 10 are arranged on the outer surface of the batten bearing bush 4, and the inserting parts 10 are inserted into the corresponding inserting grooves 9.
In addition, a plurality of axial through holes 11 are distributed in the shock absorption layer at intervals along the circumferential direction, medium liquid is filled in the axial through holes 11, and the axial through holes 11 are arranged on the shock absorption layer 2 and are close to the clamping protrusions 7. The axial through hole is added on the vibration reduction layer, when the through hole is filled with the medium liquid, the bearing is under load, particularly impact load, the bearing bush material absorbs part of the load elastically, the rest is transmitted to the medium liquid with certain pressure, and the viscous damping of the pressure medium liquid dissipates vibration energy, so that the vibration reduction and noise reduction effects are realized. When the medium liquid is extruded from the through hole or sucked into the through hole from the outside and pumped, the medium liquid flows to take away heat generated by friction and internal power consumption of the bearing bush material, and the temperature of the bearing bush can be reduced. The through holes can also be formed in the bearing bush.
As shown in fig. 5, the two sides of the slat-bearing bushes 4 parallel to the axis of the mounting shaft are movable, and under the action of the mounting shaft, when one side 13 of the slat-bearing bush is pressed to slightly move towards the direction of the shock-absorbing layer, the other side 14 of the slat-bearing bush is slightly moved in the opposite direction. During the working process, certain micro-motion or swing can be carried out along with different rotating speeds or loads, a lubricating film is more easily formed around the shaft neck, the pressure of the lubricating film applied to the shaft neck of the mounting shaft by the lath bearing bush is led to the center of the shaft diameter, the influence of a force source causing the shaft neck to whirl is reduced, the stability is improved, and the noise is reduced. The bearing bush can swing properly, so that the support flexibility is increased, the capacity of absorbing vibration energy is increased, the vibration reduction performance is improved, and the bearing bush can bear radial loads in all directions.
The damping layer 2 is made of elastic materials such as rubber or polyurethane; the medium liquid is water or environment-friendly lubricating oil, wherein the environment-friendly lubricating oil (EAL) is as follows: refers to a lubricating oil that satisfies the three characteristics of "biodegradable" and "minimally toxic" as well as "non-bioaccumulation". The batten bearing bush is made of modified materials based on ceramics, wear-resistant alloy, PEEK, polytetrafluoroethylene, polyformaldehyde, polyimide, phenolic resin, epoxy resin, ultra-high molecular weight polyethylene, nylon or polyurethane and the like.
As shown in fig. 6 and 7, the mounting shaft contact surface 5 of the lath bush 4 can be designed into a planar structure besides an arc surface, a medium liquid groove 6 is formed between adjacent lath bushes 4, and the bottom surface of the medium liquid groove 6 is the inner surface of the damping layer 2. The plane lath bearing bush can promote the formation of a hydrodynamic lubrication film due to the fact that the water wedge angle is close to the minimum, and meanwhile, the contact form between the mounting shaft and the lath bearing bush is changed from surface contact to line contact, so that the contact area is reduced, the lubrication effect is enhanced, and the noise is reduced. A groove 15 is formed in one end face of the batten bearing bush 4, when the shaft works and applies pressure to the bearing bush 4, the V-shaped groove 15 enables the bearing bush 4 to deform properly, meanwhile, swinging is easier, a lubricating film is formed conveniently, and the lubricating effect is enhanced. The damping layer is formed by casting, a dovetail groove is formed in the inner diameter of the bearing body, then the damping layer is cast, and the damping layer is glued with the bearing bush and the bearing body into a whole.
Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction. Although embodiments of the present invention have been shown and described, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art without departing from the scope of the present invention.
Claims (10)
1. The utility model provides a radial slide bearing of double-deck damping formula tilting pad which characterized in that: including bearing body, buffer layer and axle bush layer, the buffer layer hugs closely at the internal surface of bearing body, the internal surface at the buffer layer is established to the axle bush layer for directly to grinding with the installation axle surface, the axle bush layer comprises a plurality of lath axle bushes, and a plurality of lath axle bushes distribute along the buffer layer circumference, have formed the medium cistern between the adjacent lath axle bush.
2. A double-layer, vibration-damped, tilting-pad radial slide bearing according to claim 1, wherein: the outer surface of buffer layer has a plurality of joint archs along circumference interval distribution, the internal surface of bearing body be equipped with the protruding corresponding spacing dovetail of a plurality of joints of joint, the protruding joint of joint in the spacing dovetail of joint that corresponds.
3. A double-layer, vibration-damped, tilting-pad radial slide bearing according to claim 2, wherein: inserting grooves are circumferentially distributed on the inner surface of the damping layer at intervals, inserting parts are arranged on the outer surface of the batten bearing bush and are inserted into the corresponding inserting grooves.
4. A double-layer, vibration-damped, tilting-pad radial slide bearing according to claim 3, wherein: two sides of the batten bearing bush, which are parallel to the axis of the mounting shaft, are movable, and under the action of the mounting shaft, when one side of the batten bearing bush is pressed to slightly move towards the direction of the shock absorption layer, the other side of the batten bearing bush reversely slightly moves.
5. A double-layer, vibration-damped, tilting-pad radial slide bearing according to claim 4, wherein: a plurality of axial through holes are distributed in the shock absorption layer at intervals along the circumferential direction, and medium liquid is filled in the axial through holes.
6. A double-layer, vibration-damped, tilting-pad radial slide bearing according to claim 5, wherein: the axial through hole is formed in the position, close to the clamping protrusion, of the shock absorption layer.
7. A double-layer, vibration-damped, tilting-pad radial slide bearing according to claim 6, wherein: the installation axle contact surface of lath axle bush be the arcwall face, the installation axle contact surface of a plurality of lath axle bushes is located same circle, the medium cistern that forms between the adjacent lath axle bush is the V-arrangement groove.
8. A double-layer, vibration-damped, tilting-pad radial slide bearing according to claim 6, wherein: the mounting shaft contact surface of the batten bearing bush is a plane, the bottom surface of a medium liquid groove formed between adjacent batten bearing bushes is the inner surface of the damping layer, and a V-shaped groove is formed in the end surface of each batten bearing bush.
9. A double-layer, vibration-damped, tilting-pad radial slide bearing according to claim 6, wherein: the shock absorption layer is made of elastic materials; the medium liquid is water or environment-friendly lubricating oil.
10. A double-layer, vibration-damped, tilting-pad radial slide bearing according to claim 1, wherein: the bearing bush layer is bonded on the shock absorption layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021903869.4U CN213176474U (en) | 2020-09-03 | 2020-09-03 | Double-layer vibration-damping radial sliding bearing with tilting pad |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021903869.4U CN213176474U (en) | 2020-09-03 | 2020-09-03 | Double-layer vibration-damping radial sliding bearing with tilting pad |
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| CN213176474U true CN213176474U (en) | 2021-05-11 |
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| CN202021903869.4U Active CN213176474U (en) | 2020-09-03 | 2020-09-03 | Double-layer vibration-damping radial sliding bearing with tilting pad |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653735A (en) * | 2021-07-06 | 2021-11-16 | 上海大学 | Water-lubricated sliding bearing with flexible support and self-lubricating diamond-like coating |
| CN115355237A (en) * | 2022-08-18 | 2022-11-18 | 广东美芝制冷设备有限公司 | Bearing, compressor and refrigeration equipment |
| CN117307610A (en) * | 2023-10-30 | 2023-12-29 | 浙江申发轴瓦股份有限公司 | Bearing bush and compounding process thereof |
-
2020
- 2020-09-03 CN CN202021903869.4U patent/CN213176474U/en active Active
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113653735A (en) * | 2021-07-06 | 2021-11-16 | 上海大学 | Water-lubricated sliding bearing with flexible support and self-lubricating diamond-like coating |
| CN115355237A (en) * | 2022-08-18 | 2022-11-18 | 广东美芝制冷设备有限公司 | Bearing, compressor and refrigeration equipment |
| CN117307610A (en) * | 2023-10-30 | 2023-12-29 | 浙江申发轴瓦股份有限公司 | Bearing bush and compounding process thereof |
| CN117307610B (en) * | 2023-10-30 | 2024-02-23 | 浙江申发轴瓦股份有限公司 | Bearing bush and compounding process thereof |
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