A bearing structure

Abstract

The present invention discloses a bearing structure comprising a bearing body and an oil guide sleeve. An oil inlet is formed in the bearing body along its length. An oil guide cavity is a blind hole formed along its thickness and located on the bearing body's rotating shaft contact surface. One end of the oil inlet communicates with the oil guide cavity. The oil guide sleeve has an oil guide channel connecting both ends of the oil guide sleeve, and the oil guide sleeve is internally disposed within the oil guide cavity. The present invention allows lubricating oil entering the oil inlet to diffuse through the oil guide channel onto the bearing body's rotating shaft contact surface, thereby forming a lubricating oil film between the rotating shaft and the bearing surface. This prevents wear caused by dry friction or boundary friction between the two friction pairs, thereby increasing the service life of the bearing structure.

Description

Technical Field

[0001] The present invention relates to the technical field of pumped storage equipment, and in particular to a bearing structure. Background Art

[0002] Pumped-storage power stations are equipped with reversible pumping-generating units, such as hydroelectric turbines. During peak electricity demand, water from the upper reservoir is released into the lower reservoir, converting the water's potential energy into electricity for transmission to the grid. During low electricity demand, water from the lower reservoir is pumped to the upper reservoir, storing the electricity as potential energy. This absorbs excess power from the grid, effectively shaving off excess electricity and filling the gap.

[0003] In a hydro-generator, the bearing mainly includes a bearing seat and a bearing bush connected to the bearing seat. The bearing bush serves as a contact piece connected to the rotating part of the unit.

[0004] In some units (pumped storage units) and some special applications (water-wind-solar integrated pumped storage units), the units are started and stopped frequently, which can easily lead to rapid failure of the bearing surface and shorten the bearing life. Summary of the Invention

[0005] The main purpose of the embodiments of the present invention is to provide a bearing structure, aiming to improve the technical problem in the prior art that the bearing surface is worn and its life is shortened due to frequent start-up and shutdown of the unit.

[0006] An embodiment of the present invention provides a bearing structure, comprising:

[0007] The bearing body has an oil inlet hole and an oil guide cavity, wherein the oil inlet hole is opened on the bearing body along the length direction of the bearing body, and the oil guide cavity is opened on the rotating shaft contact surface of the bearing body along the thickness direction of the bearing body, and one end of the oil inlet hole is connected to the oil guide cavity;

[0008] An oil guide sleeve has an oil guide channel communicating with both ends of the oil guide sleeve, the oil guide sleeve is built into the oil guide cavity, and the outer wall of the oil guide sleeve abuts against the inner wall of the oil guide cavity, one end of the oil guide sleeve is located on the side of the connection between the oil guide cavity and the oil inlet hole close to the contact surface of the rotating shaft, and the other end of the oil guide sleeve is flush with the contact surface of the rotating shaft, so that the lubricating oil in the oil inlet hole can flow out from the oil guide channel to the contact surface of the rotating shaft.

[0009] In some embodiments of the present invention, an oil drain groove is provided on the outer wall of the oil guide sleeve, and the oil drain groove cooperates with the inner wall of the oil guide cavity to form an oil drain cavity;

[0010] The bearing shell body is provided with an oil drain hole, one end of the oil drain hole extends to the surface of the bearing shell body away from the contact surface of the rotating shaft, and the other end of the oil drain hole is communicated with the oil drain cavity.

[0011] In some embodiments of the present invention, a first sealing ring groove is provided on the outer wall of the oil guide sleeve, the first sealing ring groove is located between the oil drain groove and the contact surface of the rotating shaft, a first sealing ring is provided on the first sealing ring groove, part of the first sealing ring is located in the first sealing ring groove, and another part of the first sealing ring protrudes from the first sealing ring groove and abuts against the inner wall of the oil guide cavity.

[0012] In some embodiments of the present invention, a second sealing ring is further provided on the outer wall of the oil guide sleeve, the second sealing ring is arranged between the outer wall of the oil guide sleeve and the inner wall of the oil guide cavity, and the oil drain groove is located between the second sealing ring and the first sealing ring.

[0013] In some embodiments of the present invention, the oil guide cavity includes a straight cylindrical cavity and a stepped cavity connected to the straight cylindrical cavity, the straight cylindrical cavity is communicated with the oil inlet hole, the stepped cavity is located on a side of the straight cylindrical cavity close to the contact surface of the rotating shaft, and the width of the straight cylindrical cavity is smaller than the minimum width of the stepped cavity;

[0014] The oil guide sleeve is a stepped structure matched with the step cavity. One end of the oil guide sleeve abuts against the bottom of the step cavity and covers the liquid outlet of the straight cylinder cavity, so that the oil guide channel is connected with the oil inlet hole.

[0015] In some embodiments of the present invention, the step cavity and the oil guide sleeve are both two-level step structures, the second sealing ring is arranged between the step surface of the oil guide sleeve and the step surface of the inner wall of the step cavity, and the first sealing ring is arranged on the step of the oil guide sleeve close to the contact surface of the rotating shaft.

[0016] In some embodiments of the present invention, the first sealing ring is an elastic sealing ring;

[0017] The second sealing ring is an elastic sealing ring or a metal sealing ring.

[0018] In some embodiments of the present invention, an elastic element is connected to the surface of the bearing body facing away from the rotating shaft contact surface, and the elastic element is used to connect the bearing body and the bearing support structure.

[0019] In some embodiments of the present invention, the bearing body includes a metal shoe base, a connecting layer, and a plastic shoe surface layer, wherein the connecting layer is disposed on and connected to the metal shoe base, and the plastic shoe surface layer is disposed on and connected to the connecting layer;

[0020] The oil inlet hole is arranged in the metal tile base, and the oil guide cavity sequentially passes through the plastic tile surface and the connecting layer to the metal tile base.

[0021] In some embodiments of the present invention, the oil guide cavity includes a blind hole portion and a through hole portion connected to the blind hole portion, the blind hole portion is arranged on the metal tile base, the through hole portion passes through the connecting layer and the plastic tile surface layer, and the inner wall of the through hole portion is covered with the plastic tile surface layer.

[0022] An embodiment of the present invention provides a bearing structure, which is provided with an oil inlet hole, an oil guide cavity connected to the oil inlet hole, and an oil guide sleeve arranged in the oil guide cavity and having an oil guide channel on the bearing body, and one end of the oil guide sleeve is flush with the contact surface of the rotating shaft of the bearing body, so that the lubricating oil entering the oil inlet hole can be diffused on the contact surface of the rotating shaft of the bearing body through the oil guide channel, thereby forming a layer of lubricating oil film between the rotating shaft and the bearing surface, avoiding wear caused by dry friction or boundary friction between the two friction pairs, thereby improving the service life of the bearing structure. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the following briefly introduces the drawings required for use in the embodiments or the description of the prior art. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the structures shown in these drawings without paying any creative work.

[0024] Figure 1 A schematic structural diagram of a bearing structure according to an embodiment of the present invention;

[0025] Figure 2 This is a schematic diagram of the cooperation between the oil guide cavity and the oil guide sleeve according to an embodiment of the present invention;

[0026] Figure 3 This is a schematic structural diagram of an oil guide cavity according to an embodiment of the present invention;

[0027] Figure 4 Schematic diagram of the structure of an oil guide sleeve according to an embodiment of the present invention.

[0028] Explanation of the accompanying reference numerals: 10, bearing body; 100, metal bearing base; 200, connecting layer; 300, plastic bearing surface layer; 101, oil inlet hole; 102, oil guide chamber; 102-1, straight cylinder chamber; 102-2, first step chamber; 102-3, second step chamber; 103, oil drain hole; 400, oil guide sleeve; 400-1, first step; 400-2, second step; 401, oil guide channel; 402, oil drain groove; 403, first sealing ring groove; 500, elastic element; 700, second sealing ring; 800, first sealing ring. DETAILED DESCRIPTION

[0029] The following will clearly and completely describe the technical solutions in the embodiments of the present invention in conjunction with the accompanying drawings. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. All other embodiments obtained by ordinary technicians in this field based on the embodiments of the present invention without making any creative efforts shall fall within the scope of protection of the present invention.

[0030] It should be noted that all directional indications in the embodiments of the present invention (such as up, down, left, right, front, back, etc.) are only used to explain the relative position relationship, movement status, etc. between the various components under a certain specific posture (as shown in the accompanying drawings). If the specific posture changes, the directional indication will also change accordingly.

[0031] In the present invention, unless otherwise specified or limited, the terms "connection" and "fixation" should be understood in a broad sense. For example, "fixation" can mean fixed connection, detachable connection, or integration; mechanical connection or electrical connection; direct connection or indirect connection through an intermediate medium; internal communication between two elements or interaction between two elements, unless otherwise specified. Those skilled in the art will be able to understand the specific meanings of the above terms in the present invention based on specific circumstances.

[0032] In addition, if there are descriptions involving "first", "second", etc. in the embodiments of the present invention, the descriptions of "first", "second", etc. are only for descriptive purposes and cannot be understood as indicating or suggesting their relative importance or implicitly indicating the number of the indicated technical features. Therefore, the features defined as "first" and "second" may explicitly or implicitly include at least one of such features. In addition, the meaning of "and / or" appearing throughout the text includes three parallel schemes. Taking "A and / or B" as an example, it includes scheme A, or scheme B, or a scheme in which A and B are satisfied at the same time. In addition, the technical solutions between the various embodiments can be combined with each other, but it must be based on the ability of ordinary technicians in this field to implement. When the combination of technical solutions is mutually contradictory or cannot be implemented, it should be deemed that such a combination of technical solutions does not exist and is not within the scope of protection required by the present invention.

[0033] like Figure 1-4As shown, an embodiment of the present invention provides a bearing structure, which includes at least a bearing body 10 and an oil guide sleeve 400. The bearing body 10 has an oil inlet hole 101 and an oil guide cavity 102. The oil inlet hole 101 is opened on the bearing body 10 along the length direction of the bearing body 10. The oil guide cavity 102 is opened on the rotating shaft contact surface of the bearing body 10 along the thickness direction of the bearing body 10. One end of the oil inlet hole 101 is connected to the oil guide cavity 102. The oil guide sleeve 400 has an oil guide channel 401, and the oil guide channel 401 connects the two ends of the oil guide sleeve 400. The oil guide sleeve 400 is built into the oil guide cavity 102, and the outer wall of the oil guide sleeve 400 abuts against the inner wall of the oil guide cavity 102. One end of the oil guide sleeve 400 is located on the side of the contact surface of the rotating shaft where the oil guide chamber 102 and the oil inlet hole 101 are connected, and the other end of the oil guide sleeve 400 is flush with the contact surface of the rotating shaft, so that the lubricating oil entering the oil inlet hole 101 can flow out from the oil guide channel 401 to the contact surface of the rotating shaft.

[0034] It should be noted that the bearing body 10 is generally a rectangular parallelepiped structure, with both the surface that contacts the rotating shaft (rotating shaft contact surface) and the surface opposite the rotating shaft contact surface being arcuate. The oil inlet hole 101 is disposed within the bearing body 10. One end of the oil inlet hole 101 is disposed within the thickness of the bearing body 10, while the other end of the oil inlet hole 101 extends to the middle of the bearing body 10, or the length of the oil inlet hole 101 is slightly shorter than the length of the bearing body 10.

[0035] The oil guide chamber 102 is a blind hole formed from the rotating shaft contact surface of the bearing body 10 toward the other side opposite thereto. One end of the oil inlet hole 101 is connected to the side wall of the blind hole and thus connected to the oil guide chamber 102. Therefore, the lubricating oil in the oil inlet hole 101 can flow into the oil guide chamber 102.

[0036] The oil guide sleeve 400 is typically a cylindrical or stepped cylinder. Its oil guide passage 401 is a through-hole arranged axially along the cylinder or stepped cylinder. This through-hole extends through both ends of the cylinder or stepped cylinder, connecting them. One end of the oil guide sleeve 400 is flush with the rotating shaft contact surface, while the other end of the oil guide sleeve 400 is positioned within the oil guide cavity 102. This allows lubricating oil flowing into the oil guide cavity 102 through the oil inlet hole 101 to flow through the oil guide passage 401 to the rotating shaft contact surface.

[0037] At the same time, in order to ensure the connection stability between the oil guide sleeve 400 and the oil guide chamber 102, threads that can be connected to each other are respectively provided on the outer wall of the oil guide sleeve 400 and the inner wall of the oil guide chamber 102. The threads on the outer wall of the oil guide sleeve 400 and the inner wall of the oil guide chamber 102 can be provided in a partial area or on the contact surfaces of the two.

[0038] The oil guide cavity 102 is a blind hole opened on the rotating shaft contact surface of the bearing body 10 along the thickness direction of the bearing body 10 .

[0039] Therefore, based on the above description, those skilled in the art can understand that, by providing an oil inlet hole 101 on the bearing body 10, an oil guide cavity 102 connected to the oil inlet hole 101, and an oil guide sleeve 400 provided in the oil guide cavity 102 and having an oil guide channel 401, and making one end of the oil guide sleeve 400 flush with the contact surface of the rotating shaft of the bearing body 10, the lubricating oil entering the oil inlet hole 101 can be diffused on the contact surface of the rotating shaft of the bearing body 10 through the oil guide channel 401, thereby forming a layer of lubricating oil film between the rotating shaft and the bearing surface, avoiding wear caused by dry friction or boundary friction between the two friction pairs, thereby improving the service life of the bearing structure.

[0040] It should be supplemented that the inner wall of the oil guide cavity 102 is surface-to-surface connected to the outer wall of the oil guide sleeve 400 , which means that the hole structure of the oil guide cavity 102 and the shaft structure of the oil guide sleeve 400 are in transition fit.

[0041] In some embodiments, the width of the oil guide channel 401 is smaller than the width of the oil guide cavity 102, so that the lubricating oil is accelerated when flowing from the oil guide cavity 102 to the oil guide channel 401, thereby quickly flowing out of the oil guide channel 401, accelerating the formation of an oil film of the lubricating oil on the contact surface of the rotating shaft.

[0042] In other embodiments, the width of the oil guiding channel 401 is smaller than the width of the oil guiding cavity 102 and is the same as the width of the oil inlet hole 101 .

[0043] In some embodiments, the oil guide sleeve 400 is made of metal material, such as copper and copper alloy, and is arranged in the oil guide cavity 102 to compensate for the lack of rigidity of the bearing body 10 due to the removal of part of the bearing body 10 to form the oil guide cavity 102, thereby ensuring the reliability of the bearing body 10.

[0044] In some embodiments, the bearing body 10 is generally a multi-layer structure, the oil inlet hole 101 is provided in the bottom layer, and the oil guide cavity 102 penetrates at least one layer structure from the surface layer away from the bottom layer to the bottom layer.

[0045] In some embodiments, an oil drain groove 402 is provided on the outer wall of the oil guide sleeve 400. The oil drain groove 402 cooperates with the inner wall of the oil guide cavity 102 to form an oil drain cavity. An oil drain hole 103 is provided on the bearing body 10. One end of the oil drain hole 103 extends to the surface of the bearing body 10 that faces away from the rotating shaft contact surface, and the other end of the oil drain hole 103 communicates with the oil drain cavity.

[0046] It should be noted that the oil drain groove 402 is an annular groove provided on the outer wall of the oil guide sleeve 400. Since the outer wall of the oil guide sleeve 400 is surface-to-surface connected to the inner wall of the oil guide cavity 102, the inner wall of the oil guide cavity 102 covers the oil drain groove 402 to form an oil drain cavity.

[0047] During contact between the bearing body 10 and the rotating shaft, some lubricating oil may seep between the outer wall of the oil guide sleeve 400 and the inner wall of the oil guide cavity 102. The oil drain groove 402 is provided to collect the lubricating oil between the two. An oil drain hole 103 is also provided, connecting the oil drain cavity with the surface of the bearing body 10 facing away from the rotating contact surface, thereby draining the oil from the drain cavity. This prevents excessive oil seepage, which could cause pressure buildup between the oil guide sleeve 400 and the oil guide cavity 102 and damage the bearing body 10.

[0048] Specifically, in some embodiments, in order to quickly drain the oil between the outer wall of the oil guide sleeve 400 and the inner wall of the oil guide cavity 102, the oil drain hole 103 is disposed on the lower side of the oil drain groove 402. In the present invention, the lower side is interpreted as the side of an object closer to the center of the earth. When the oil drain hole 103 is disposed on the lower side of the oil drain groove 402, under the action of gravity, lubricating oil is more likely to enter the oil drain hole 103 from the oil drain cavity. The oil drain hole 103 includes an inclined section and a horizontal section. The inclined section is a hole section that starts downward relative to the inner wall of the oil guide cavity 102. The main function of this hole section is to connect the oil drain cavity and the horizontal section. The horizontal section is a hole section opened in the bearing body 10. The function of this hole section is to connect the inclined section and the surface of the bearing body 10, thereby draining the lubricating oil from the oil drain cavity. It can be understood that setting an inclined section that is inclined with respect to the horizontal section can ensure that the lubricating oil can flow from the inclined section to the horizontal section at a low speed. Relatively setting a vertical section that is perpendicular to the horizontal section can prevent the lubricating oil from forming a vortex at the connection between the vertical section and the horizontal section due to excessive flow rate, thereby blocking the oil drain hole 103.

[0049] Specifically, in some embodiments, in order to guide the lubricating oil between the outer wall of the oil guide sleeve 400 and the inner wall of the oil guide cavity 102 into the oil drain groove 402, an inclined surface is provided at the connection between the side wall of the oil drain groove 402 and the oil guide sleeve 400, thereby facilitating the lubricating oil to quickly flow into the oil drain groove 402 under the guiding effect of the inclined surface.

[0050] In some embodiments, a first sealing ring groove 403 is provided on the outer wall of the oil guide sleeve 400, and the first sealing ring groove 403 is located between the oil drain groove 402 and the contact surface of the rotating shaft. A first sealing ring 800 is provided on the first sealing ring groove 403, and part of the first sealing ring 800 is located in the first sealing ring groove 403, and the other part of the first sealing ring 800 protrudes from the first sealing ring groove 403 and is connected to the inner wall of the oil guide cavity 102.

[0051] It should be noted that the thickness of the first sealing ring 800 is greater than the depth of the first sealing ring groove 403, thereby ensuring that when the first sealing ring 800 is set in the first sealing ring groove 403, part of it can still abut against the inner wall of the oil guide cavity 102, thereby playing a sealing role.

[0052] The first sealing ring groove 403 is an annular groove that surrounds the outer wall of the oil guide sleeve 400. The first sealing ring 800 is an elastic sealing ring, such as a rubber sealing ring. Positioning the first sealing ring 800 between the outer wall of the oil guide sleeve 400 and the inner wall of the oil guide cavity 102 increases the compression force between the oil guide sleeve 400 and the oil guide cavity 102, thereby preventing the oil guide sleeve 400 from wobbling within the oil guide cavity 102 and reducing wear on the oil guide sleeve 400 caused by such wobbling.

[0053] Specifically, in some embodiments, the first sealing ring 800 is disposed on one end of the oil guide sleeve 400 that is close to the rotating shaft contact surface. The oil guide sleeve 400 generally has a stepped structure, where the width of the step close to the rotating shaft contact surface is greater than the width of the step away from the rotating shaft contact surface. The first sealing ring 800 is disposed on the step of the oil guide sleeve 400 that is closest to the rotating shaft contact surface and is positioned close to the rotating shaft contact surface.

[0054] In some embodiments, a second sealing ring 700 is further provided on the outer wall of the oil guide sleeve 400. The second sealing ring 700 is arranged between the outer wall of the oil guide sleeve 400 and the inner wall of the oil guide cavity 102. The oil drain groove 402 is located between the second sealing ring 700 and the first sealing ring 800.

[0055] It can be understood that the second sealing ring 700 is arranged on the side of the oil drain groove 402 away from the first sealing ring 800. Its main function is to prevent more lubricating oil from entering between the inner wall of the oil guide cavity 102 and the outer wall of the oil guide sleeve 400, thereby reducing the accumulation of lubricating oil between the oil guide cavity 102 and the oil guide sleeve 400, and avoiding excessive pressure between the oil guide cavity 102 and the oil guide sleeve 400 due to excessive oil volume between the two.

[0056] In some embodiments, oil guide cavity 102 comprises a straight cavity 102-1 and a stepped cavity connected to straight cavity 102-1. Straight cavity 102-1 communicates with oil inlet 101. The stepped cavity is located on the side of straight cavity 102-1 closest to the contact surface of the rotating shaft. The width of straight cavity 102-1 is less than the minimum width of the stepped cavity. Oil guide sleeve 400 is a stepped structure that mates with the stepped cavity. One end of oil guide sleeve 400 abuts the bottom of the stepped cavity and covers the liquid outlet of straight cavity 102-1, thereby connecting oil guide channel 401 with oil inlet 101.

[0057] It can be understood that the width of the straight-cylinder cavity 102-1 is smaller than the minimum width of the step cavity. Therefore, when the oil guide sleeve 400 is set in the oil guide cavity 102, one end of the oil guide sleeve 400 is set against one side of the straight-cylinder cavity 102-1 and covers the liquid outlet of the straight-cylinder cavity 102-1, so that the lubricating oil flowing out of the liquid outlet of the straight-cylinder cavity 102-1 can directly enter the oil guide channel 401 of the oil guide sleeve 400 as much as possible, and avoid it from flowing between the outer wall of the oil guide sleeve 400 and the inner wall of the oil guide cavity 102.

[0058] It should be noted that the stepped oil guide sleeve 400 has a first end and a second end. The first end is the end that abuts one side of the straight cylindrical cavity 102-1, and the second end is the end that is closer to the rotating shaft contact surface. From the first end to the second end, the width of the step of the oil guide sleeve 400 gradually increases. That is, the closer to the second end, the wider the step of the oil guide sleeve 400. As a result, when the oil guide sleeve 400 is lifted by high-pressure oil, the force on the second end is always greater than that on the first end, ensuring that the second end of the oil guide sleeve 400 does not extend beyond the rotating shaft contact surface, thereby preventing wear.

[0059] In order to make the connection between the oil guide sleeve 400 and the oil guide cavity 102 more stable, the outer wall of the oil guide sleeve 400 and the inner wall of the oil guide cavity 102 are connected by a thread, wherein the thread can be set only on any one step of the oil guide sleeve 400, or on multiple steps of the oil guide sleeve 400.

[0060] In some embodiments, the step cavity and the oil guide sleeve 400 are both two-level step structures, the second sealing ring 700 is arranged between the step surface of the oil guide sleeve 400 and the step surface of the inner wall of the step cavity, and the first sealing ring 800 is arranged on the step of the oil guide sleeve 400 close to the contact surface of the rotating shaft.

[0061] It should be noted that the stepped structure of the oil guide sleeve 400 includes a first step 400-1 and a second step 400-2, with the width of the first step 400-1 being smaller than that of the second step 400-2. The stepped cavity forming the oil guide chamber 102 includes a first step chamber 102-2 and a second step chamber 102-3, which are respectively sized to match the first step 400-1 and the second step 400-2. That is, the width of the first step chamber 102-2 is smaller than that of the second step chamber 102-3. The straight cylindrical cavity 102-1 is connected to the first step chamber 102-2. The first step 400-1 is disposed against one side of the straight cylindrical cavity 102-1 and is mated with the first step chamber 102-2, while the second step 400-2 is mated with the second step chamber 102-3. The first sealing ring 800 is arranged on the second step 400-2, the second sealing ring 700 is arranged between the step surfaces of the first step 400-1 and the second step 400-2 and the step surfaces of the first step chamber 102-2 and the second step chamber 102-3, and the oil drain groove 402 is arranged on the second step 400-2. The first sealing ring 800 and the second sealing ring 700 seal the space between the outer wall of the oil guide sleeve 400 and the inner wall of the oil guide chamber 102, thereby preventing more lubricating oil from entering therebetween.

[0062] At the same time, the width of the second step 400-2 is greater than that of the first step 400-1, which ensures that the end of the second step 400-2 of the oil guide sleeve 400 close to the rotating shaft contact surface is subjected to a greater force than the end of the first step 400-1, thereby ensuring that the end of the second step 400-2 does not exceed the rotating shaft contact surface and wear the rotating shaft.

[0063] In some embodiments, the first sealing ring 800 is an elastic sealing ring, and the second sealing ring 700 is an elastic sealing ring or a metal sealing ring.

[0064] In some embodiments, an elastic element 500 is connected to the surface of the bearing body 10 that is away from the contact surface of the rotating shaft. The elastic element 500 is used to connect the bearing body 10 and the bearing support structure.

[0065] It should be noted that one end of the elastic element 500 is connected to the surface of the bearing body 10 away from the contact surface of the rotating shaft, and the other end of the elastic element 500 is connected to the bearing seat, so that the spacing and angle between the bearing body 10 and the bearing seat can be adaptively adjusted during the rotation of the rotating shaft.

[0066] It can be understood that by adaptively adjusting the spacing and angle between the bearing body 10 and the bearing seat, the self-adjustability of the bearing to deformation can be increased, the bearing surface pressure of the unit can be increased, the loss can be reduced, and the efficiency can be improved.

[0067] The elastic element 500 may be a structure formed by a characteristic spring, or may be a pad formed by an elastic material.

[0068] For example, when the elastic element 500 is composed of multiple springs, the multiple springs are evenly distributed on the surface of the bearing body 10 .

[0069] In some embodiments, the bearing body 10 includes a metal base 100, a connecting layer 200, and a plastic lining layer 300. The connecting layer 200 is disposed on and connected to the metal base 100, and the plastic lining layer 300 is disposed on and connected to the connecting layer 200. An oil inlet 101 is disposed in the metal base 100, and an oil guide cavity 102 sequentially passes through the plastic lining surface and the connecting layer 200 to the metal base 100.

[0070] In some embodiments, the plastic tile surface layer 300 may be a polytetrafluoroethylene layer, the connecting layer 200 may be a copper wire layer, and the metal tile base 100 may be made of alloy steel. Using the polytetrafluoroethylene layer as the surface layer in contact with the rotating shaft can create a low coefficient of friction between the two, thereby reducing frictional losses. It is understood that the plastic tile surface layer 300 can also be made of a material with a similarly low coefficient of friction.

[0071] In some embodiments, the oil inlet hole 101 is provided in the metal tile base 100, the straight cylindrical cavity 102-1 is provided in the metal tile base 100, the first step chamber 102-2 is provided in the metal tile base 100, a portion of the second step chamber 102-3 is provided in the metal tile base 100, and another portion of the second step chamber 102-3 is provided through the connecting layer 200 and the plastic tile surface layer 300.

[0072] In some embodiments, the oil drain hole 103 is provided in the metal shingle 100 .

[0073] In some embodiments, the oil guide cavity 102 includes a blind hole portion and a through hole portion connected to the blind hole portion. The blind hole portion is arranged on the metal tile base 100. The through hole portion passes through the connecting layer 200 and the plastic tile surface layer 300. The inner wall of the through hole portion is covered with the plastic tile surface layer 300.

[0074] It can be understood that by using the plastic tile surface layer 300 to cover the inner wall of the through hole portion, the connection layer 200 is protected, thereby preventing the oil guide sleeve 400 from wearing the connection layer 200.

[0075] The above descriptions are merely optional embodiments of the present invention and do not limit the patent scope of the present invention. Any equivalent structural transformations made using the contents of the present invention's description and drawings, or direct / indirect applications in other related technical fields within the application concept of the present invention are included in the patent protection scope of the present invention.

Claims

1. A bearing structure, characterized in that: include: The bearing body has an oil inlet hole and an oil guide cavity, wherein the oil inlet hole is opened on the bearing body along the length direction of the bearing body, and the oil guide cavity is opened on the rotating shaft contact surface of the bearing body along the thickness direction of the bearing body, and one end of the oil inlet hole is connected to the oil guide cavity; an oil guide sleeve having an oil guide channel communicating with both ends of the oil guide sleeve, the oil guide sleeve being built into the oil guide cavity, and the outer wall of the oil guide sleeve abutting against the inner wall of the oil guide cavity, one end of the oil guide sleeve being located on a side of the connection between the oil guide cavity and the oil inlet hole close to the contact surface of the rotating shaft, and the other end of the oil guide sleeve being flush with the contact surface of the rotating shaft, so that lubricating oil in the oil inlet hole can flow out from the oil guide channel to the contact surface of the rotating shaft; An oil drain groove is provided on the outer wall of the oil guide sleeve, and the oil drain groove cooperates with the inner wall of the oil guide cavity to form an oil drain cavity; an oil drain hole is provided on the bearing shell body, one end of the oil drain hole extends to the surface of the bearing shell body away from the contact surface of the rotating shaft, and the other end of the oil drain hole is connected to the oil drain cavity; A first sealing ring groove is provided on the outer wall of the oil guide sleeve, the first sealing ring groove being located between the oil drain groove and the contact surface of the rotating shaft, a first sealing ring being provided on the first sealing ring groove, a portion of the first sealing ring being located in the first sealing ring groove, and another portion of the first sealing ring protruding from the first sealing ring groove and abutting against the inner wall of the oil guide cavity; The oil guide cavity includes a straight cylindrical cavity and a stepped cavity connected to the straight cylindrical cavity, the straight cylindrical cavity is communicated with the oil inlet hole, the stepped cavity is located on a side of the straight cylindrical cavity close to the contact surface of the rotating shaft, and the width of the straight cylindrical cavity is smaller than the minimum width of the stepped cavity; The oil guide sleeve is a stepped structure matched with the step cavity. One end of the oil guide sleeve abuts against the bottom of the step cavity and covers the liquid outlet of the straight cylinder cavity, so that the oil guide channel is connected with the oil inlet hole.

2. The bearing structure according to claim 1, characterized in that: A second sealing ring is further sleeved on the outer wall of the oil guide sleeve. The second sealing ring is arranged between the outer wall of the oil guide sleeve and the inner wall of the oil guide cavity. The oil drain groove is located between the second sealing ring and the first sealing ring.

3. The bearing structure according to claim 2, characterized in that: The step cavity and the oil guide sleeve are both two-stage step structures. The second sealing ring is arranged between the step surface of the oil guide sleeve and the step surface of the inner wall of the step cavity. The first sealing ring is arranged on the step of the oil guide sleeve close to the contact surface of the rotating shaft.

4. The bearing structure according to any one of claims 2 to 3, characterized in that: The first sealing ring is an elastic sealing ring; The second sealing ring is an elastic sealing ring or a metal sealing ring.

5. The bearing structure according to claim 4, characterized in that: An elastic element is connected to the surface of the bearing body facing away from the rotating shaft contact surface, and the elastic element is used to connect the bearing body and the bearing support structure.

6. The bearing structure according to claim 1, characterized in that: The bearing body includes a metal tile base, a connecting layer and a plastic tile surface layer, wherein the connecting layer is arranged on and connected to the metal tile base, and the plastic tile surface layer is arranged on and connected to the connecting layer; The oil inlet hole is arranged in the metal tile base, and the oil guide cavity sequentially passes through the plastic tile surface layer and the connecting layer to the metal tile base.

7. The bearing structure according to claim 6, characterized in that: The oil guide cavity includes a blind hole portion and a through hole portion connected to the blind hole portion. The blind hole portion is arranged on the metal tile base. The through hole portion passes through the connecting layer and the plastic tile surface layer. The inner wall of the through hole portion is covered with the plastic tile surface layer.

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