Thrust bearing

Abstract

The utility model discloses a thrust bearing which comprises a fixing ring used for providing an oil supply channel, and a plurality of installation holes used for installing tile block assemblies are evenly formed in the circumferential direction of the first annular end face of the fixing ring. An oil inlet groove is axially formed in the third annular end face of the oil control ring, and tile block oil supply holes are evenly formed in the second annular end face of the oil control ring in the circumferential direction. The third annular end face of the oil control ring is fixedly connected with the first annular end face of the fixing ring. According to the thrust bearing, the connection design between the tile assemblies and the fixing ring is optimized, so that the self-balancing function of the tile assemblies is not changed while the structure of the thrust bearing is simplified; according to changes of loads, the heights of the tile block assemblies are adjusted so that all the tile block assemblies can evenly share axial thrust, and the compensation capacity is high. Meanwhile, the tile block assemblies are connected with the fixing ring through the elastic parts, and the mounting and dismounting processes are further simplified.

Description

TECHNICAL FIELD

[0001] The utility model belongs to mechanical bearing technical field, concretely relates to a thrust bearing. BACKGROUND

[0002] At present, the thrust bearing widely used in the compressor field mainly includes three types of plane thrust bearing, single-layer tilting thrust bearing and multi-layer self-balancing thrust bearing, but each type of thrust bearing has its limitation although each type of thrust bearing has its characteristics. For example: although the plane thrust bearing has simple structure, the fixed design lacks adjusting ability and cannot cope with complex working condition changes; although the single-layer tiltilting thrust bearing has relatively simple structure and realizes certain compensation ability through the left and right swing of thrust pad, the compensation ability is limited, when there is pad thickness deviation or thrust disc and bearing eccentric wear, only partial pad bears axial thrust, affecting overall performance; through the mutual superposition of two layers of water level blocks and the omnidirectional swing of pad, the multi-layer self-balancing thrust bearing ensures that each pad uniformly shares axial thrust, but the multi-layer self-balancing thrust bearing has complex structure, many parts lead to large cumulative error, and the processing difficulty is large, the axial thrust carrying capacity is insufficient, and the pad is prone to falling during installation. SUMMARY

[0003] The technical problem to be solved by the utility model is to overcome the defects of the prior art and provide a thrust bearing.

[0004] To solve the above technical problems, the basic idea of the technical scheme of the utility model is as follows: a thrust bearing, comprising: a fixed ring for providing an oil supply channel, a plurality of mounting holes for mounting a pad assembly are uniformly arranged on the first annular end face of the fixed ring in the circumferential direction;

[0005] An oil control ring is arranged on the first annular end face of the fixed ring, and the oil control ring is arranged on the first annular end face of the fixed ring.

[0006] The third annular end face of the oil control ring is fixedly connected with the first annular end face of the fixed ring.

[0007] Further, an oil ring groove is arranged on the second annular end face of the fixed ring in the circumferential direction;

[0008] The oil ring groove is uniformly provided with a plurality of oil outlet holes in the circumferential direction for supplying oil to the oil control ring.

[0009] Further, the thrust bearing further comprises: a pad assembly,

[0010] The pad assembly at least comprises: a first pad, the first pad comprises a boss;

[0011] A bushing is provided with an axial through gap in the center, and the outer diameter of the boss is consistent with the inner diameter of the gap.

[0012] Further, the tile assembly further comprises a limiting component, which extends upward from the bottom of the tile assembly and comprises a first limiting boss and a second limiting boss in sequence from inside to outside;

[0013] The first limiting boss is adjacent to the gap of the bushing, and the outer diameter of the first limiting boss is the same as the inner diameter of the gap.

[0014] The second limiting boss is located outside the first limiting boss, and the outer diameter of the second limiting boss is greater than the inner diameter of the gap but less than the outer diameter of the bushing.

[0015] Further, the tile assembly further comprises an elastic component.

[0016] The elastic component is coaxially sleeved on the outer peripheral wall of the second limiting boss of the limiting component, and the tile assembly is installed in the mounting hole by extruding the elastic component.

[0017] Further, the limiting component is arranged at the bottom of the tile assembly, and is used for limiting the axial movement of the elastic component.

[0018] Further, the tile assembly further comprises a second tile.

[0019] An edge of the fourth annular end face of the oil control ring at the connection with the second tile is provided with a wire groove for placing a temperature measuring wire.

[0020] The fourth annular end face of the oil control ring further comprises an anti-rotation groove for preventing rotation of the tile assembly.

[0021] The axial thickness of the second tile is equal to the thickness of the first tile.

[0022] Further, the tile assembly further comprises a disc spring, the inner hole of the disc spring has a diameter greater than the outer peripheral diameter of the elastic component, and the outer peripheral diameter of the disc spring is less than or equal to the outer diameters of the first tile and the second tile.

[0023] Further, the second tile comprises a temperature sensing element, which is connected with an external temperature monitoring device through a temperature measuring wire, and is used for monitoring and transmitting temperature data of the second tile and its surrounding environment.

[0024] After the above technical scheme is adopted, the present application has the following beneficial effects compared with the prior art.

[0025] The function of self-balancing of the thrust pad is not changed while the structure of the thrust bearing is simplified, the height of the thrust pad can be automatically adjusted according to the change of the load, all the pads can uniformly share the axial thrust, and the compensation capacity of the thrust bearing is enhanced.

[0026] The fixed ring and the flow channel of the oil control ring are arranged, the lubricating oil is accurately injected on the working surface of each thrust pad, the amount of the lubricating oil is reduced, and the hot oil after lubrication is prevented from mixing into the cold oil. Meanwhile, the elastic component is arranged, the pad assembly can be connected to the fixed ring, the falling of the thrust pad is prevented, the bearing can be held and installed, the hand pressure of the thrust pad is not needed, when the thrust pad group is replaced, the oil control ring is only needed to be disassembled, the pad can be directly taken out by hand, the pad is pressed by the palm during installation, and the installation is completed.

[0027] The specific implementation manners of the utility model are described in further detail below with reference to the drawings. BRIEF DESCRIPTION OF DRAWINGS

[0028] The drawings are part of the utility model, which is used to provide further understanding of the utility model, the schematic embodiments of the utility model and the description thereof are used to explain the utility model, and do not constitute improper limitation on the utility model. Apparently, the drawings in the following description are only some embodiments, and other drawings can be obtained by the drawings without creative labor for ordinary skilled in the art. In the drawings:

[0029] Figure 1 It is the schematic view of the second annular end face of the fixed ring of the utility model;

[0030] Figure 2 It is the schematic view of the first annular end face of the fixed ring of the utility model;

[0031] Figure 3 It is the schematic view of the fourth annular end face of the oil control ring of the utility model;

[0032] Figure 4 It is the schematic view of the third annular end face of the oil control ring of the utility model;

[0033] Figure 5 It is the explosion view of the pad assembly of the utility model;

[0034] Figure 6 It is the channel schematic view of the lubricating oil of the utility model;

[0035] Figure 7 It is the sectional view of the pad assembly of the utility model;

[0036] Figure 8 is another explosion map of the tile assembly of the utility model;

[0037] Figure 9 is a structural schematic view of the thrust bearing of the utility model;

[0038] Explanation of reference numerals: 1, fixed ring; 11, first annular end face; 111, mounting hole; 12, second annular end face; 121, oil ring groove; 122, oil outlet hole; 13, anti-rotation pin hole; 14, threaded hole; 2, oil control ring; 21, third annular end face; 211, oil inlet groove; 22, fourth annular end face; 221, tile oil supply hole; 222, outlet groove; 223, second mounting hole; 3, tile assembly; 31, first tile; 32, boss (not shown in the figure); 33, bushing; 331, notch; 34, limiting component; 341, first limiting boss; 342, second limiting boss; 35, second tile; 351, outlet groove; 36, elastic component; 37, disc spring;

[0039] It should be noted that these drawings and written descriptions are not intended to limit the scope of the concept of the utility model in any way, but to illustrate the concept of the utility model to those skilled in the art by referring to specific embodiments. DETAILED DESCRIPTION

[0040] In order to make the purpose, technical scheme and advantages of the embodiments of the utility model clearer, the technical scheme in the embodiments will be described clearly and completely below in combination with the drawings in the embodiments of the utility model, and the following embodiments are used to illustrate the utility model, but not to limit the scope of the utility model.

[0041] In the description of the utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", "outer" and the like indicate the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the utility model and simplifying the description, and do not indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore cannot be understood as a limitation on the utility model.

[0042] In the description of the utility model, it should be noted that unless otherwise explicitly specified and limited, the terms "mounting", "connection" and "connection" should be understood broadly, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.

[0043] Example 1

[0044] As shown in Figures 1-7 A thrust bearing, comprising: a fixed ring 1 for providing an oil supply channel, a plurality of deep holes for accommodating a block assembly 3 are uniformly distributed on the first annular end face 11 of the fixed ring 1; an oil ring groove 121 is uniformly distributed on the second annular end face 12 of the fixed ring 1 along the circumference; a plurality of oil outlet holes 122 are uniformly distributed on the oil ring groove 121 along the circumference, for supplying oil to the oil control ring 2. A plurality of mounting holes 111 for mounting the block assembly 3 are uniformly distributed on the first annular end face 11 of the fixed ring 1; in this embodiment, an oil inlet groove 211 is arranged axially on the third annular end face 21 of the oil control ring 2, and a block oil supply hole 221 is uniformly distributed circumferentially; an anti-rotation pin hole 13 and a threaded hole 14 are arranged circumferentially on the fixed ring 1, the anti-rotation pin hole 13 is used to prevent the block assembly 3 from moving in the fixed ring 1 and the oil control ring 2; the third annular end face 21 of the oil control ring 2 and the first annular end face 11 of the fixed ring 1 are fixedly connected by bolts or threads, and the anti-rotation pin hole 13 is used to distinguish the first annular end face 11 and the second annular end face 12 of the fixed ring 1, and to ensure that the third annular end face 21 of the oil control ring 2 and the first annular end face 11 of the fixed ring 1 are fixedly connected.

[0045] In this embodiment, the oil ring groove 121 is uniformly opened on the second annular end face 12 of the fixed ring 1 along the circumference, which is the main storage and distribution channel for lubricating oil, and the lubricating oil is uniformly sprayed into the oil control groove 211 of the oil control ring 2 through the carefully designed oil outlet hole 122. The layout of the present application ensures that each block assembly can obtain sufficient and uniformly distributed lubricating oil, effectively reducing friction and wear.

[0046] Preferably, the uniformly distributed mounting holes 111 on the first annular end face 11 of the fixed ring 1 provide the basis for positioning the fixed connection of the third annular end face 21 of the oil control ring 2 and the first annular end face 11 of the fixed ring 1. In addition, the anti-rotation pin hole 13 and the threaded hole 14 not only simplify the installation process of the oil control ring 2, but also clearly mark the anti-rotation pin hole 13, which ensures that the oil control ring 2 is correctly and accurately installed on the first annular end face 11 of the fixed ring 1, avoiding performance degradation or damage caused by installation errors, and improving the reliability of the overall structure.

[0047] In the embodiment, the oil inlet groove 211 on the third annular end surface 21 of the oil control ring 2 can efficiently receive oil from the outside or the fixed ring 1 and guide the oil to the pad oil supply hole 221 on the third annular end surface 21 through the flow channel of the internal oil inlet groove 211. This design ensures that the oil can reach the pad assembly in the shortest path and with the smallest resistance, further improving the lubrication efficiency; and the oil control ring 2 and the fixed ring 1 are fixedly connected in a bolt or threaded manner, which is not only firm and reliable, but also convenient to disassemble and maintain, reducing the maintenance cost and time.

[0048] In the embodiment, the optimized oil channel design ensures that the lubricating oil can be uniformly and efficiently supplied to each pad assembly, significantly reducing friction and wear during operation, and prolonging the service life of the thrust bearing. Through auxiliary design such as anti-rotation pin hole, the correct installation of the oil control ring 2 and the fixed ring 1 is ensured, avoiding performance problems caused by installation errors, and improving the stability and reliability of the overall structure.

[0049] In the embodiment, the edge of the fourth annular end surface 22 of the oil control ring 2 at the connection with the second pad 35 is provided with a temperature measuring line groove 222 for placing a temperature measuring line; the fourth annular end surface 22 of the oil control ring 2 also includes an anti-rotation groove for preventing the pad assembly 3 from rotating; and the axial thickness of the second pad 35 is equal to the thickness of the first pad 31.

[0050] The oil supply mode of the thrust bearing of the utility model is as follows: lubricating oil enters the oil inlet groove 211 of the oil control ring 2 through the oil outlet hole 122 of the oil ring groove 121 of the fixed ring 1, and then is uniformly injected into the pad stress surface along the periphery of the pad assembly 3 through the pad oil supply hole 221 on the oil inlet groove 211.

[0051] In an available embodiment, the tile assembly 3 includes, in sequence along the lubricating oil flow direction, a limiting component 32, an elastic component 36, a bushing 33, a disc spring 37, and a first tile 31 as a working surface or a second tile 35 with integrated temperature monitoring function. This design not only ensures smooth flow of lubricating oil, but also improves the integration and reliability of the assembly. The first annular end face 11 of the fixing ring 1 is uniformly provided with a series of deep holes in the circumferential direction. The deep holes are used to accommodate the limiting component 32 and the elastic component 36. The size of the deep hole is accurately set to be slightly larger than the outer diameter of the elastic component 36, so as to realize interference assembly of the elastic component 36 and the deep hole. During installation, the elastic component 36 is elastically deformed and tightly embedded in the deep hole through precise extrusion process. The interference assembly of the elastic component 36 significantly improves the fastening effect between the tile assembly 3 and the fixing ring 1. In addition, by designing reasonable deep hole size and extrusion process, the installation process of the tile assembly 3 is simplified, and the installation efficiency is improved.

[0052] In the embodiment, in order to ensure higher structural stability and operating efficiency of the thrust bearing, the tile assembly 3 is significantly improved, specifically including: the first tile 31 includes a boss (not shown in the figure), which is fixedly connected or integrally formed with the first tile 31, not only ensuring the consistency of structural strength, but also optimizing the assembly mode with the bushing 33. The bushing 33 is provided with an axially continuous notch 331 in the center, and the outer diameter of the boss is consistent with the inner diameter of the notch 331; the boss (not shown in the figure) is connected with the notch 331 of the bushing 22 to realize seamless butt joint, which simplifies the assembly process.

[0053] In the present embodiment, the application further enhances the stability of the tile assembly 3 in the axial direction, and the tile assembly 3 further comprises a limiting component 34 arranged at the bottom of the tile assembly 3, which is used to limit the elastic component 36 and further limit the movement of the tile assembly 3 in the axial direction. Further, the limiting component 34 extends upward from the bottom of the tile assembly 3 and is designed as a multi-layer structure, and sequentially comprises a first limiting boss 341 and a second limiting boss 342 from inside to outside; wherein the first limiting boss 341 is adjacent to the notch 331 of the bushing 33, and the outer diameter of the first limiting boss 341 is the same as the inner diameter of the notch 331, and the first limiting boss 341 is in contact with the inner wall of the notch 331; the second limiting boss 342 is located outside the first limiting boss 341, and the outer diameter of the second limiting boss 342 is greater than the inner diameter of the notch 331 but less than the outer diameter of the bushing 33, and the limiting component 34 further comprises an end cover arranged on the side of the second limiting boss 342 away from the bushing 33, and the outer diameter of the end cover is greater than the outer diameter of the second limiting boss 342, and the outer diameter of the end cover is consistent with the outer diameter of the bushing 33.

[0054] In the present embodiment, the elastic component 36 is arranged between the bushing 33 and the limiting component 34, and the elastic component 36 is coaxially sleeved on the outer peripheral wall of the second limiting boss 342 of the limiting component 34, and the tile assembly 3 is installed in the mounting hole 111 by extruding the elastic component 36.

[0055] In the present embodiment, the introduction of the elastic component 36 effectively fills the gap between the bushing 33 and the mounting hole 111, and the elastic component 36 is elastically deformed by extrusion, thereby achieving close fitting and sealing between the tile assembly 3 and the mounting hole 111. This design greatly reduces the risk of lubricating oil leakage and ensures the stable operation of the internal lubrication system of the thrust bearing. The elastic component 36 not only plays a sealing role, but also enhances the stability of the tile assembly 3 in the mounting hole 111 through the pre-stress generated by its elastic deformation, which helps to resist vibration and impact and prevents the tile assembly from shifting or loosening during operation, thereby improving the reliability and service life of the entire thrust bearing. In addition, by arranging the elastic component 36 in an extrudable form and coaxially sleeving it on the outer peripheral wall of the second limiting boss 342 of the limiting component 34, the installation process of the tile assembly 3 becomes simpler and faster. The operator only needs to place the tile assembly 3 in the mounting hole to achieve stable installation without complex positioning and adjustment steps.

[0056] In the embodiment, the inner hole of the disc spring 37 has a diameter larger than the outer diameter of the elastic component 36, and the outer diameter of the disc spring 37 is equal to or smaller than the outer diameter of the first pad 31 and the second pad 35. Because the gap between the inner hole of the disc spring 37 and the outer diameter of the elastic component 36 is appropriate, the assembly of the elastic component 36 and the disc spring 37 can be quickly completed without excessive adjustment during the installation process, thereby improving the overall installation efficiency. In addition, the disc spring 37 serves as an elastic element, and the accurate coordination of the outer diameter of the disc spring 37 with the outer diameter of the first pad 31 or the second pad 35 ensures that the load can be uniformly distributed on the pad assembly 3, reduces the risk of stress concentration and local wear, and improves the service life of the pad assembly.

[0057] In the embodiment, the second pad 35 is a temperature measuring thrust pad. An outlet groove 351 is arranged on the outer peripheral wall of the second pad 35 for placing a temperature measuring wire. When the second pad 35 is connected to the second mounting hole 223 of the oil control ring 2, an outlet groove 222 is arranged on the edge of the third annular end face 21 of the oil control ring 2 at the connection position of the second pad 35, and the outlet groove 222 is integrated to enable the temperature measuring wire to be arranged on the oil control ring 2 in a hidden and stable manner, thereby avoiding the interference and damage risks that may be caused by the exposure of the temperature measuring wire. In addition, in order to improve the wear resistance and heat conduction efficiency of the contact surface of the second pad 35 and the oil control ring 2, one end face of the second pad 35 connected to the oil control ring 2 is made of babbitt alloy. Correspondingly, in order to enhance the overall strength and corrosion resistance of the first pad 31, the second pad 35, and the thrust bearing, the opposite end face of the first pad 31 and the second pad 35 connected to the oil control ring 2 is made of alloy steel.

[0058] In the embodiment, after the assembly of the thrust bearing, the babbitt alloy plane of the second pad 35 is at least 3 mm higher than the plane of the oil control ring 2. The application forms a natural oil groove or oil wedge by making the babbitt alloy plane of the second pad 35 higher than the plane of the oil control ring 2. During the operation of the thrust bearing, the lubricating oil can be more effectively introduced and maintained in this area, thereby improving the lubrication condition, reducing friction and wear, and prolonging the service life of the second pad 35 and the thrust bearing. In addition, increasing the thickness of the second pad 35 and the specific height difference between the second pad 35 and the oil control ring 2 collectively enhances the axial load capacity of the bearing, so that the thrust bearing can better disperse stress and maintain the stability and reliability of the structure when bearing a larger axial load.

[0059] In the embodiment, preferably, the second tile 35 comprises a temperature sensing element, for example, the end surface of the second tile 35 connected with the oil control ring 2 is provided with a babbitt material; the temperature sensing element is connected with an external temperature monitoring device through a temperature measuring wire, for monitoring and transmitting temperature data of the second tile and the surrounding environment, so that abnormal temperature change in the bearing operation can be found in time, and safe and stable operation of the equipment is ensured.

[0060] In a feasible embodiment, the fixing ring 1, the oil control ring 2, the tile assembly 3 and the holes and grooves on the parts of the thrust bearing are provided as a rotary body, and the uniformity and symmetry of the rotary body structure make it easier to realize standardized and automated production of the parts in the machining process, further improving the quality and consistency of the product.

[0061] The above is only a preferred embodiment of the utility model, and does not limit the utility model in any form, although the utility model has been disclosed as above with a preferred embodiment, however, it is not intended to limit the utility model, any skilled person in the art can make some changes or modifications to the above-mentioned technical content without departing from the technical solution of the utility model, and equivalent embodiments of equivalent changes can be obtained, the implementation schemes in the above embodiments can be further combined or replaced, as long as the content of the utility model is not deviated, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the utility model still belong to the scope of the utility model.

Claims

1. A thrust bearing, characterized by, The thrust bearing comprises: a fixed ring (1) for providing an oil supply channel, a first annular end surface (11) of the fixed ring (1) is circumferentially and uniformly provided with a plurality of mounting holes (111) for mounting a pad assembly (3); an oil control ring (2), an axial oil inlet groove (211) and a circumferentially uniform pad oil supply hole (221) are arranged on a third annular end surface (21) of the oil control ring (2); the third annular end surface (21) of the oil control ring (2) is fixedly connected with the first annular end surface (11) of the fixed ring (1).

2. The thrust bearing according to claim 1, wherein: a second annular end surface (12) of the fixed ring (1) is circumferentially provided with an oil ring groove (121); a plurality of oil outlet holes (122) are uniformly arranged in the oil ring groove (121) for supplying oil to the oil control ring (2).

3. The thrust bearing of claim 2, wherein Further comprising: a pad assembly (3), the pad assembly (3) at least comprises: a first pad (31) comprising a boss; a bushing (33) centrally provided with an axial through gap (331), an outer diameter of the boss is consistent with an inner diameter of the gap (331).

4. The thrust bearing according to claim 3, wherein: the pad assembly (3) further comprises a limiting component (34), the limiting component (34) extends upward from a bottom of the pad assembly (3) and comprises a first limiting boss (341) and a second limiting boss (342) from inside to outside; the first limiting boss (341) is adjacent to the gap (331) of the bushing (33), and an outer diameter of the first limiting boss (341) is the same as the inner diameter of the gap (331); the second limiting boss (342) is located outside the first limiting boss (341), and an outer diameter of the second limiting boss (342) is greater than the inner diameter of the gap (331) but less than an outer diameter of the bushing (33).

5. The thrust bearing of claim 4, wherein the pad assembly (3) further comprises an elastic component (36); the elastic component (36) is coaxially sleeved on an outer peripheral wall of the second limiting boss (342) of the limiting component (34), and the pad assembly (3) is installed in the mounting hole (111) by extruding the elastic component (36).

6. The thrust bearing according to claim 5, wherein: the limiting component (34) is arranged on the bottom of the pad assembly (3) for limiting the axial movement of the elastic component (36).

7. The thrust bearing of claim 6, wherein the pad assembly (3) further comprises a second pad (35); an edge of a fourth annular end surface (22) of the oil control ring (2) at a connection with the second pad (35) is provided with a wire groove (222) for placing a temperature measuring wire; the fourth annular end surface (22) of the oil control ring (2) further comprises an anti-rotation groove for preventing rotation of the pad assembly (3); an axial thickness of the second pad (35) is equal to a thickness of the first pad (31).

8. The thrust bearing according to claim 7, wherein: The tile assembly (3) further comprises a disc spring (37), an inner hole of the disc spring (37) has a diameter greater than an outer peripheral diameter of the elastic component (36), and an outer peripheral diameter of the disc spring (37) is less than or equal to an outer diameter of the first tile (31) and the second tile (35).

9. The thrust bearing of claim 8, wherein, The second tile (35) comprises a temperature sensing element connected with an external temperature monitoring device through a temperature sensing wire, for monitoring and transmitting temperature data of the second tile and its surrounding environment.

Images