Sliding bearing with cooling structure

Abstract

The utility model discloses a sliding bearing with a cooling structure. The sliding bearing comprises an annular tilting fillet and a plurality of arc-shaped bearing bushes, the annular tilting fillet is provided with an outer circumferential surface and an inner circumferential surface, and a first oil inlet communicated with the outer circumferential surface and the inner circumferential surface is formed in the annular tilting fillet; the plurality of arc-shaped bearing bushes are sequentially and fixedly arranged along the inner circumferential surface of the annular bush seat, and a gap is formed between every two adjacent arc-shaped bearing bushes; the arc-shaped bearing bush is provided with a first surface and a second surface which are oppositely arranged, and the first surface is provided with a second oil inlet communicated with the first oil inlet; a first oil conveying channel and a second oil conveying channel are formed in the arc-shaped bearing bush, and the first oil conveying channel communicates with the second oil inlet and the second surface and allows cooling oil to circulate; the second oil conveying channel is used for conveying cooling oil to the interval; the second surfaces of the arc-shaped bearing bushes form a containing space used for containing the rotating shaft, and the space between the rotating shaft and the second surfaces is filled with cooling oil. The sliding bearing can effectively reduce heating and lower the working temperature.

Description

Technical Field

[0001] The utility model belongs to the technical field of bearings, and in particular relates to a sliding bearing with a cooling structure. Background Art

[0002] Sliding bearings are bearings that work by sliding friction. Sliding bearings work smoothly, reliably and without noise. Under liquid lubrication conditions, the sliding surfaces are separated by lubricating oil without direct contact, which can greatly reduce friction loss and surface wear, and the oil film also has a certain vibration absorption capacity. Sliding bearings are generally used under low-speed and heavy-load conditions, or in operating parts where maintenance and lubrication are difficult. Sliding bearings are widely used in large equipment. Therefore, sliding bearings need to always maintain sufficient lubricating fluid and the temperature of the lubricating fluid should not be too high. In existing sliding bearings, the shaft will heat the cooling oil during rotation, and the hot cooling oil that cannot be discharged in time will mix with the low-temperature cooling oil entering the bearing, so that the cooling oil temperature that actually enters the tile surface is higher than the oil inlet temperature, which cannot effectively reduce the bearing temperature. In addition, there is a gap between the two tiles, and the heated cooling oil will be brought into the gap between the two tiles as the shaft rotates. The hot oil will accumulate more and more in the gap between the tiles, and the heat cannot be dissipated, resulting in higher and higher tile temperature.

[0003] The information disclosed in this background technology section is only intended to increase the understanding of the overall background of the present invention, and should not be regarded as acknowledging or suggesting in any form that the information constitutes the prior art already known to a person skilled in the art. Utility Model Content

[0004] The utility model aims to provide a sliding bearing with a cooling structure, wherein the first oil delivery channel and the second oil delivery channel provided therein together constitute the cooling structure of the sliding bearing, which can effectively prevent the sliding bearing from overheating.

[0005] In order to achieve the above-mentioned purpose, a specific embodiment of the utility model provides a sliding bearing with a cooling structure, which includes: an annular bearing seat and a plurality of arc-shaped bearings. The annular bearing seat has an outer peripheral surface and an inner peripheral surface arranged oppositely, and a first oil inlet connecting the outer peripheral surface and the inner peripheral surface is provided on the annular bearing seat; a plurality of arc-shaped bearings are fixedly arranged in sequence along the inner peripheral surface of the annular bearing seat, and there is a gap between two adjacent arc-shaped bearings; the arc-shaped bearing has a first surface and a second surface arranged oppositely, and a second oil inlet connected to the first oil inlet is provided on the first surface; a first oil delivery channel and a second oil delivery channel extending along the length direction of the arc-shaped bearing are provided inside the arc-shaped bearing, and the first oil delivery channel connects the second oil inlet and the second surface for cooling oil to flow; one end of the second oil delivery channel is connected to the second oil inlet, and the other end is connected to the gap, for conveying cooling oil to the gap; the second surfaces of the plurality of arc-shaped bearings form a accommodating space for accommodating a rotating shaft, and the space between the rotating shaft and the second surface is filled with the cooling oil.

[0006] In one or more embodiments of the present invention, the second oil delivery channel includes an oil control section and an oil outlet section connected to the oil control section along the direction of circulation of the cooling oil, and the diameter of the oil control section is smaller than the diameter of the oil outlet section.

[0007] In one or more embodiments of the present invention, a plurality of mutually parallel second oil delivery channels are provided along the direction in which the cooling oil flows.

[0008] In one or more embodiments of the present invention, the second surface is provided with an oil outlet cavity extending along the height direction of the arc-shaped bearing shell, one end of the first oil delivery channel is connected to the second oil inlet, and the other end is connected to the oil outlet cavity.

[0009] In one or more embodiments of the present invention, the oil outlet cavity includes a connecting cavity and an oil outlet groove, and the opening of the oil outlet groove gradually becomes larger in the radial direction of the arc-shaped bearing along the flow direction of the cooling oil.

[0010] In one or more embodiments of the present utility model, a matching groove is formed on the first surface of each arc-shaped bearing bush along the height direction of the arc-shaped bearing bush, and the second oil inlet is formed in the matching groove.

[0011] In one or more embodiments of the utility model, a bearing pad is arranged in the matching groove, the bearing pad protrudes from the matching groove and abuts against the inner circumferential surface of the annular bearing seat, and is constructed so that there is a gap between the arc-shaped bearing and the annular bearing seat.

[0012] In one or more embodiments of the present invention, a through hole is formed on the bearing pad, and the through hole communicates with the first oil inlet and the second oil inlet for the cooling oil to flow.

[0013] In one or more embodiments of the present invention, an oil discharge groove is provided at the other end of the second surface of each arc-shaped bearing along the height direction of the arc-shaped bearing, and the oil discharge groove is connected to the top surface and the bottom surface of the arc-shaped bearing for discharging the cooling oil between the rotating shaft and the second surface.

[0014] In one or more embodiments of the present utility model, annular oil seals are provided on the upper and lower end surfaces of the annular bearing seat, which are fixedly connected to the annular bearing seat and cover the top and bottom surfaces of the multiple arc-shaped bearings; a drainage notch is opened on the annular oil seal at a position corresponding to the oil discharge groove of the arc-shaped bearing, which cooperates with the oil discharge groove to discharge the cooling oil.

[0015] Compared with the prior art, the first oil delivery channel and the second oil delivery channel with a cooling structure of the utility model constitute a cooling structure of the sliding bearing, which can effectively prevent the sliding bearing from overheating. The first oil delivery channel flows to the arc-shaped bearing to ensure that the space between the arc-shaped bearing and the rotating shaft is always filled with enough cooling oil. The second oil delivery channel can deliver the cooling oil to the gap of the arc-shaped bearing to avoid the high-temperature cooling oil from gathering in the gap. The second oil delivery channel is also provided with an oil control section to prevent too much cooling oil from entering the gap. The arc-shaped bearing is also provided with a bearing pad to adjust the distance between the arc-shaped bearing and the annular bearing seat and reduce the shaft resistance of the rotating shaft. In addition, the arc-shaped bearing is provided with an oil discharge groove to discharge the heated cooling oil in time, thereby reducing the working temperature between the arc-shaped bearing and the rotating shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments or the prior art descriptions are briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in the utility model, and for ordinary technicians in this field, other drawings can be obtained based on these drawings without creative work.

[0017] Figure 1 A three-dimensional diagram of a sliding bearing with a cooling structure in one embodiment of the utility model;

[0018] Figure 2 It is a side view of a sliding bearing with a cooling structure in one embodiment of the utility model;

[0019] Figure 3 for Figure 2 Sectional view along the AA axis;

[0020] Figure 4 An exploded view of a sliding bearing with a cooling structure in one embodiment of the utility model;

[0021] Figure 5 It is a first stereoscopic view of a curved bearing bush in one embodiment of the utility model;

[0022] Figure 6 This is a second stereoscopic view of the arc-shaped bearing bush in one embodiment of the utility model.

[0023] Description of main reference numerals:

[0024] 1-annular bearing seat, 11-outer circumference, 12-inner circumference, 13-first oil inlet, 2-arc bearing, 21-first surface, 211-second oil inlet, 22-second surface, 23-first oil delivery channel, 24-second oil delivery channel, 241-oil control section, 242-oil outlet section, 25-oil outlet cavity, 251-connecting cavity, 252-oil outlet groove, 26-bearing pad, 261-through hole, 27-matching groove, 28-oil unloading groove, 3-spacer, 4-annular oil seal, 41-drainage gap. DETAILED DESCRIPTION

[0025] In order to enable those skilled in the art to better understand the technical solutions in the present invention, the technical solutions in the embodiments of the present invention will be described clearly and completely below in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of them. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the present invention.

[0026] like Figure 1-6 As shown, a sliding bearing with a cooling structure in one embodiment of the utility model comprises: an annular bearing seat 1 and a plurality of arcuate bearing shells 2. The annular bearing seat 1 has an outer circumferential surface 11 and an inner circumferential surface 12 arranged opposite to each other, and a first oil inlet 13 connecting the outer circumferential surface 11 and the inner circumferential surface 12 is provided on the annular bearing seat 1. The plurality of arcuate bearing shells 2 are fixedly arranged in sequence along the inner circumferential surface 12 of the annular bearing seat 1, and a gap 3 is provided between two adjacent arcuate bearing shells 2; the arcuate bearing shell 2 has a first surface 21 and a second surface 22 arranged opposite to each other, and the first surface 21 is provided with a second oil inlet 211 connected to the first oil inlet 13; the interior of the arcuate bearing shell 2 is provided with a plurality of oil inlets 211 connected to the first oil inlet 13 along the length direction of the arcuate bearing shell 2 (such as Figure 6The first oil delivery channel 23 and the second oil delivery channel 24 extend in the direction indicated by the arrow b in the middle. The first oil delivery channel 23 is connected to the second oil inlet 211 and the second surface 22 for cooling oil to flow. One end of the second oil delivery channel 24 is connected to the second oil inlet 211, and the other end is connected to the interval 3, for delivering cooling oil to the interval 3; the second surfaces 22 of the plurality of arc-shaped bearing shells 2 form a receiving space for receiving the rotating shaft, and the space between the rotating shaft and the second surface 22 is filled with cooling oil.

[0027] In the above embodiment, the interior of the arc-shaped bearing 2 is provided with a first oil delivery channel 23 and a second oil delivery channel 24, and the cooling oil can flow to the second surface 22 of the arc-shaped bearing 2 through the first oil delivery channel 23, thereby ensuring that the space between the arc-shaped bearing 2 and the rotating shaft is always filled with enough cooling oil. When the cooling oil flows in the first oil delivery channel 23, the heat generated between the rotating shaft and the arc-shaped bearing 2 can be transferred to the cooling oil through the second surface 22 of the arc-shaped bearing 2, so that the cooling oil plays a role in cooling the arc-shaped bearing 2 and the rotating shaft. The temperature of the cooling oil after coming out of the first oil delivery channel 23 is still much lower than the temperature between the rotating shaft and the arc-shaped bearing 2, so the cooling oil can continue to be filled between the arc-shaped bearing 2 and the rotating shaft, further cooling the arc-shaped bearing 2 and the rotating shaft.

[0028] In addition, since there is a gap 3 between the arc-shaped bearing shells 2, the gap 3 is easily filled with heated oil, which results in that the temperature of the arc-shaped bearing shells 2 cannot be effectively discharged. The second oil supply channel 24 can deliver cooling oil to the gap 3 of the arc-shaped bearing shells 2. The low-temperature cooling oil can fill the gap 3 and penetrate from the gap 3 to the space between the arc-shaped bearing shells 2 and the rotating shaft. The second oil supply channel 24 can not only prevent the high-temperature cooling oil from gathering at the gap 3, but also supply oil between the arc-shaped bearing shells 2 and the rotating shaft, further reducing the temperature between the two. The first oil supply channel 23 and the second oil supply channel 24 together constitute the cooling structure of the sliding bearing, which can effectively prevent the sliding bearing from overheating.

[0029] The interval 3 between two adjacent arc-shaped bearing bushes 2 is small and the space is limited. The cooling oil input into the interval 3 by the second oil delivery channel 24 should not be too much. Figure 3 As shown, the second oil delivery channel 24 includes an oil control section 241 and an oil outlet section 242 connected to the oil control section 241 along the direction of the cooling oil flow. The diameter of the oil control section 241 is smaller than the diameter of the oil outlet section 242. The diameter of the oil control section 241 is smaller than the diameter of the oil outlet section 242, and the speed of the cooling oil flowing therein can be reduced, thereby avoiding excessive cooling oil in the interval 3.

[0030] In addition, in order to ensure that the cooling oil in interval 3 is evenly distributed, as Figure 5As shown, a plurality of second oil delivery channels 24 are provided in parallel with each other along the direction of the cooling oil flow. The plurality of second oil delivery channels 24 can simultaneously deliver oil to the interval 3, thereby ensuring that every part of the interval 3 can be filled with cooling oil.

[0031] In order to ensure that the cooling oil is stably output from the first oil delivery channel 23, Figure 3 and Figure 5 As shown, the second surface 22 is provided with an oil outlet cavity 25 extending in the height direction of the arc-shaped bearing bush 2, one end of the first oil delivery channel 23 is connected to the second oil inlet 211, and the other end is connected to the oil outlet cavity 25. The oil outlet cavity 25 is opened in the height direction of the arc-shaped bearing bush 2, and the cooling oil can evenly flow out of the oil outlet cavity 25 and evenly cover the rotating shaft after filling the oil outlet cavity 25.

[0032] Furthermore, the oil outlet chamber 25 includes a connecting chamber 251 and an oil outlet groove 252. The opening of the oil outlet groove 252 gradually becomes larger in the radial direction of the arc-shaped bearing 2 along the flow direction of the cooling oil to ensure the oil outlet efficiency of the cooling oil so that the speed of the cooling oil entering between the rotating shaft and the arc-shaped bearing 2 is greater than the speed at which the cooling oil is discharged.

[0033] While supplying cooling oil to the rotating shaft, the oil outlet cavity 25 also needs to discharge the heated cooling oil between the arc-shaped bearing 2 and the rotating shaft in time so that new cooling oil can enter. Figure 5 As shown, an oil discharge groove 28 is formed at the other end of the second surface 22 of each arc-shaped bearing bush 2 along the height direction of the arc-shaped bearing bush 2 , and the oil discharge groove 28 is connected to the top surface and the bottom surface of the arc-shaped bearing bush 2 .

[0034] like Figure 3 As shown, the shaft always rotates in the clockwise direction ( Figure 3 The arc-shaped bearing bush 2 rotates in the direction indicated by the arrow a in the middle (in the direction indicated by the arrow a in the middle). Since the gap between the arc-shaped bearing bush 2 and the rotating shaft is extremely small, the rotating shaft can bring the cooling oil from the oil outlet cavity 25 to the oil discharge groove 28 during the rotation process. The groove wall of the oil discharge groove 28 can scrape the heated cooling oil between the arc-shaped bearing bush 2 and the rotating shaft into the oil discharge groove 28 during the rotation process of the rotating shaft. The cooling oil is discharged in time from the place where the oil discharge groove 28 is connected with the top and bottom surfaces of the arc-shaped bearing bush 2 along the extension direction of the oil discharge groove 28, thereby ensuring that the temperature between the arc-shaped bearing bush 2 and the rotating shaft will not be too high.

[0035] The second surfaces 22 of the multiple arc-shaped bearings 2 form a receiving space for the rotating shaft to rotate. However, due to the problem of process precision, the annular surface formed by the second surfaces 22 of the multiple arc-shaped bearings 2 is not necessarily a regular circle, so that there will be a certain resistance to the rotating shaft in the receiving space. In order to reduce the resistance to the rotation of the rotating shaft, the first surface 21 of each arc-shaped bearing 2 is provided with a matching groove 27 along the height direction of the arc-shaped bearing 2, and the second oil inlet 211 is provided in the matching groove 27. Specifically, a bearing pad 26 can be provided in the matching groove 27, and the bearing pad 26 is abutted against the inner circumferential surface 12 of the annular bearing seat 1 and the bearing pad 26 protrudes from the matching groove 27, and is constructed so that there is a gap between the arc-shaped bearing 2 and the annular bearing seat 1. The thickness of the bearing pad 26 can be selected according to the actual use to adapt to different situations.

[0036] The bearing pad 26 protrudes from the matching groove 27. On the one hand, it can adjust the distance between the arc-shaped bearing 2 and the inner circumferential surface 12 of the annular bearing seat 1. On the other hand, the arc-shaped bearing 2 and the annular bearing seat 1 are supported by the bearing pad 26, and the arc-shaped bearing 2 can have a certain swing relative to the annular bearing seat 1, so that the arc-shaped bearing 2 can automatically maintain a suitable working position with the rotating shaft during the rotation of the rotating shaft to reduce the resistance to the rotation of the rotating shaft.

[0037] In order to ensure the circulation of cooling oil between the first oil inlet 13 and the second oil inlet 211, a through hole 261 is provided on the bearing pad 26. The through hole 261 connects the first oil inlet 13 with the second oil inlet 211, so that the cooling oil can flow from the first oil inlet 13 through the through hole 261 into the second oil inlet 211, and then flow into the first oil delivery channel 23 and the second oil delivery channel 24 from the second oil inlet 211, and then flow to the oil outlet chamber 25.

[0038] In one embodiment, an annular oil seal 4 is provided on both upper and lower end surfaces of the annular shoe seat 1. The annular oil seal 4 is fixedly connected to the annular shoe seat 1 and covers the top and bottom surfaces of the plurality of arc-shaped bearing shells 2. The provision of the annular oil seal 4 can prevent the cooling oil from being discharged or seeping out in advance from places other than the oil discharge groove 28, thereby affecting the cooling and lubrication between the rotating shaft and the arc-shaped bearing shells 2.

[0039] In order to cooperate with the oil discharge groove 28, a drain notch 41 is provided on the annular oil seal 4 at a position corresponding to the oil discharge groove 28 of the arc-shaped bearing shell 2 for draining the cooling oil. Therefore, the annular oil seal 4 can prevent the cooling oil from leaking or being discharged in advance while ensuring that the cooling oil is discharged in time along the oil discharge groove 28.

[0040] In summary, the arc-shaped bearing 2 of the sliding bearing with a cooling structure of the utility model is provided with a first oil delivery channel 23 and a second oil delivery channel 24. The first oil delivery channel 23 and the second oil delivery channel 24 constitute the cooling structure of the sliding bearing, thereby effectively preventing the sliding bearing from overheating. The first oil delivery channel 23 flows to the arc-shaped bearing 2 to ensure that the arc-shaped bearing 2 and the rotating shaft are always filled with enough cooling oil. The second oil delivery channel 24 can deliver the cooling oil to the interval 3 of the arc-shaped bearing 2 to avoid the high-temperature cooling oil from gathering in the interval 3. The second oil delivery channel 24 is also provided with an oil control section 241 to prevent too much cooling oil from entering the interval 3. The arc-shaped bearing 2 is also provided with a bearing pad 26 to adjust the distance between the arc-shaped bearing 2 and the annular bearing seat 1 and reduce the shaft resistance of the rotating shaft. In addition, the arc-shaped bearing 2 is provided with an oil discharge groove 28 to discharge the heated cooling oil in time, thereby reducing the working temperature between the arc-shaped bearing 2 and the rotating shaft.

[0041] It is obvious to those skilled in the art that the present invention is not limited to the details of the exemplary embodiments described above, and that the present invention can be implemented in other specific forms without departing from the spirit or essential features of the present invention. Therefore, the embodiments should be regarded as exemplary and non-restrictive from any point of view, and the scope of the present invention is defined by the appended claims rather than the above description, and it is intended that all changes falling within the meaning and scope of the equivalent elements of the claims be included in the present invention. Any reference numeral in a claim should not be regarded as limiting the claim to which it relates.

[0042] In addition, it should be understood that although the present specification is described according to implementation modes, not every implementation mode contains only one independent technical solution. This description of the specification is only for the sake of clarity. Those skilled in the art should regard the specification as a whole. The technical solutions in each embodiment may also be appropriately combined to form other implementation modes that can be understood by those skilled in the art.

Claims

1. A sliding bearing with a cooling structure, characterized in that: include: The annular shoe seat has an outer peripheral surface and an inner peripheral surface arranged opposite to each other, and the annular shoe seat is provided with a first oil inlet connecting the outer peripheral surface and the inner peripheral surface; and A plurality of arc-shaped bearing shells are fixedly arranged in sequence along the inner circumference of the annular bearing seat and there is a gap between two adjacent arc-shaped bearing shells; the arc-shaped bearing shell has a first surface and a second surface arranged opposite to each other, and the first surface is provided with a second oil inlet connected to the first oil inlet; the interior of the arc-shaped bearing shell is provided with a first oil delivery channel and a second oil delivery channel extending along the length direction of the arc-shaped bearing shell, and the first oil delivery channel is connected to the second oil inlet and the second surface for circulation of cooling oil; one end of the second oil delivery channel is connected to the second oil inlet, and the other end is connected to the gap, for conveying cooling oil to the gap; the second surfaces of the plurality of arc-shaped bearing shells form an accommodating space for accommodating a rotating shaft, and the space between the rotating shaft and the second surface is filled with the cooling oil.

2. The sliding bearing with a cooling structure according to claim 1, characterized in that: The second oil delivery channel includes an oil control section and an oil outlet section connected to the oil control section along the direction in which the cooling oil flows, and the diameter of the oil control section is smaller than the diameter of the oil outlet section.

3. The sliding bearing with a cooling structure according to claim 2, characterized in that: A plurality of mutually parallel second oil delivery channels are arranged along the direction in which the cooling oil flows.

4. The sliding bearing with a cooling structure according to claim 1, characterized in that: The second surface is provided with an oil outlet cavity extending along the height direction of the arc-shaped bearing bush; one end of the first oil delivery channel is connected to the second oil inlet, and the other end is connected to the oil outlet cavity.

5. The sliding bearing with a cooling structure according to claim 4, characterized in that: The oil outlet cavity comprises a connecting cavity and an oil outlet groove, and the opening of the oil outlet groove gradually becomes larger in the radial direction of the arc-shaped bearing shell along the flow direction of the cooling oil.

6. The sliding bearing with a cooling structure according to claim 1, characterized in that: A matching groove is formed on the first surface of each arc-shaped bearing bush along the height direction of the arc-shaped bearing bush, and the second oil inlet is formed in the matching groove.

7. The sliding bearing with a cooling structure according to claim 6, characterized in that: A bearing pad is arranged in the matching groove, the bearing pad protrudes from the matching groove and abuts against the inner circumferential surface of the annular bearing seat, and is constructed so that a gap exists between the arc-shaped bearing pad and the annular bearing seat.

8. The sliding bearing with a cooling structure according to claim 7, characterized in that: A through hole is formed on the bearing pad, and the through hole is connected with the first oil inlet and the second oil inlet for the cooling oil to flow.

9. The sliding bearing with a cooling structure according to claim 1, characterized in that: The other end of the second surface of each arc-shaped bearing is provided with an oil discharge groove along the height direction of the arc-shaped bearing. The oil discharge groove is connected to the top and bottom surfaces of the arc-shaped bearing and is used to discharge the cooling oil between the rotating shaft and the second surface.

10. The sliding bearing with a cooling structure according to claim 9, characterized in that: Annular oil seals are provided on the upper and lower end surfaces of the annular bearing seat, which are fixedly connected to the annular bearing seat and cover the top and bottom surfaces of the multiple arc-shaped bearings; a drainage notch is opened on the annular oil seal at a position corresponding to the oil discharge groove of the arc-shaped bearing, which cooperates with the oil discharge groove to discharge the cooling oil.

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