Support bearing and generator set

Abstract

The present disclosure relates to the technical field of bearings, and in particular to a support bearing and a generator set. The support bearing provided by the present disclosure includes a bearing body, the inner wall surface of the bearing body is provided with a support layer, the surface of the support layer forms a support surface, and the support surface is used to cooperate with the journal of the rotating shaft to radially support the journal; thrust layers are respectively provided on the two side surfaces of the bearing body, and the surface of the thrust layer forms a thrust surface, and the thrust surface is used to cooperate with the pillow blocks on both sides of the journal to limit the axial movement of the rotating shaft. On the basis of the structure of a conventional support bearing, thrust layers are respectively provided on the two side surfaces of the support bearing, and the surface of the thrust layer forms a thrust surface. The thrust and limiting functions are achieved by cooperating with the thrust surface and the pillow block. In this way, in the case of low axial thrust load, a support bearing can be used to achieve the thrust and limiting effects on the axial direction of the rotating shaft while supporting the journal, without the need to add a separate thrust bearing, thereby reducing costs and facilitating maintenance.

Description

Technical Field

[0001] The present disclosure relates to the technical field of bearing bushes, and in particular to a support bearing bush and a generator set. Background Art

[0002] The pulse generator set is a generator set that uses inertial energy storage technology to generate short-term high voltage, high current or high power pulses. The inertial energy storage pulse power generation system is generally composed of a traction machine, a gearbox, a flywheel and an AC generator. The high-speed shaft system composed of the flywheel and the generator rotor can reach a maximum speed of 6000rpm. During a pulse operation, the shaft system speed gradually accelerates to a high speed, discharges, and the speed will drop sharply to the waiting speed. During this process, the shaft system will experience a temperature rise change and produce an axial displacement of about 0.30mm. Therefore, in addition to satisfying the conventional radial support function, the shaft system bearing system must also consider the thrust and limit functions to limit the axial displacement and movement of the shaft system.

[0003] The conventional solution is to add a set of thrust bearings independent of the support bearings on the traction machine side. This structure is very complicated. The installation space needs to be considered when designing the shaft system, which increases the length of the shaft neck, reduces the stiffness of the shaft system, and increases the difficulty of shaft system balance. In addition, in some applications, such as 100MW / 400MJ inertial energy storage level pulse generator sets, the axial displacement is about 0.3mm, and the axial thrust load is small. The use of permanent thrust bearings is obviously overkill, which not only increases manufacturing costs, but also makes overhaul and maintenance difficult. Summary of the invention

[0004] In order to solve the above technical problems or at least partially solve the above technical problems, the present disclosure provides a support bearing and a generator set.

[0005] The present invention provides a support bearing, which includes a bearing body, an inner wall surface of the bearing body is provided with a support layer, the surface of the support layer forms a support surface, and the support surface is used to cooperate with the journal of the rotating shaft to radially support the journal; thrust layers are respectively provided on the two side surfaces of the bearing body, and the surface of the thrust layers forms thrust surfaces, and the thrust surfaces are used to cooperate with pillow blocks located on both sides of the journal of the rotating shaft to limit axial movement of the rotating shaft.

[0006] Optionally, the support layer and the thrust layer are an integrally cast structure.

[0007] Optionally, the bearing body includes at least two bearing blocks, and the at least two bearing blocks are arranged around the same axis to form a bearing body with an annular structure.

[0008] Optionally, the bearing body is provided with an oil inlet hole and a main oil supply channel connected to the oil inlet hole, the supporting surface is provided with a supporting surface oil wedge and a supporting surface oil storage tank for supplying oil to the supporting surface oil wedge, and the supporting surface oil storage tank is connected to the main oil supply channel.

[0009] Optionally, annular oil grooves are respectively provided at the connection between the support surface and the thrust surfaces on both sides, and notches are respectively opened on both sides of the support surface oil storage groove, and the support surface oil storage groove is connected with the annular oil grooves on both sides through the notches; a thrust surface oil wedge and a thrust surface oil storage groove for supplying oil to the thrust surface oil wedge are provided on the thrust surface, and the thrust surface oil storage groove is connected with the annular oil groove.

[0010] Optionally, there are multiple thrust surface oil wedges evenly distributed along the circumference of the thrust surface, and a thrust surface oil storage groove is provided on one side of each thrust surface oil wedge along the circumference.

[0011] Optionally, an oil return port is provided on the bearing body, and the thrust surface oil storage groove has an oil discharge port communicated with the oil return port.

[0012] Optionally, there are multiple supporting surface oil wedges arranged in sequence along the circumference of the supporting surface, and a supporting surface oil storage tank is provided on one side of each supporting surface oil wedge along the circumference.

[0013] Optionally, the main oil supply channel includes an annular channel connected to the oil inlet hole, and an oil wedge oil supply channel connected to the annular channel, and the number of the oil wedge oil supply channels is equal to the number of the supporting surface oil storage grooves and they are connected one-to-one.

[0014] Optionally, oil baffles are respectively provided on both sides of the bearing body, and the oil baffles are used to seal and cooperate with the outer side surface of the pillow block of the rotating shaft.

[0015] The present disclosure also provides a generator set, comprising a support bearing as described in any of the above embodiments.

[0016] Compared with the prior art, the technical solution provided by the embodiments of the present disclosure has the following advantages:

[0017] 1) The support bearing provided by the present invention is provided with thrust layers on the two side surfaces of the bearing body of the support bearing on the basis of the structure of the conventional support bearing, and thrust surfaces are formed on the surface of the thrust layers. The thrust surfaces cooperate with the pillow blocks on both sides of the shaft diameter of the rotating shaft to limit the axial movement of the rotating shaft, thereby realizing the thrust and limit functions. At the same time, two thrust surfaces are provided on one support bearing, and the two thrust surfaces are used to limit the movement of the rotating shaft in the axial direction. In this way, in the case of low axial thrust load, one support bearing can realize the thrust and limit functions of the axial direction of the rotating shaft while supporting the shaft neck, without the need to add a separate thrust bearing, which greatly shortens the size requirements of the shaft neck, reduces the cost, and is convenient for maintenance.

[0018] 2) The support bearing provided by the present invention cleverly adopts the method of setting an annular oil groove at the connection between the support surface and the thrust surface, and setting notches on both sides of the support surface oil storage groove respectively to communicate with the annular oil grooves on both sides, so that the lubricating oil flowing in from the main oil supply channel can be distributed in parallel by using the support surface oil storage groove, while ensuring that the oil supply to the support surface oil wedge is sufficient, part of the lubricating oil is distributed to the annular oil grooves on both sides to supply oil to the thrust surface oil wedge, thereby realizing the parallel connection of the support surface lubricating oil circuit and the thrust surface lubricating oil circuit, avoiding the series connection of the two oil circuits resulting in a higher oil temperature in the rear branch, and failing to achieve the lubricating oil cooling effect, and at the same time avoiding the interference of the support surface bearing gap and the thrust surface bearing gap on the main circuit lubricating oil flow. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] The accompanying drawings, which are incorporated in and constitute a part of this specification, illustrate embodiments consistent with the present disclosure and, together with the description, serve to explain the principles of the present disclosure.

[0020] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, for ordinary technicians in this field, other drawings can be obtained based on these drawings without paying any creative labor.

[0021] Figure 1 It is a schematic diagram of the exploded structure of the support bearing described in the embodiment of the present disclosure;

[0022] Figure 2 It is a schematic diagram of the assembly structure of the support bearing and the rotating shaft according to the embodiment of the present disclosure;

[0023] Figure 3 It is a schematic diagram of the distribution of the oil wedge on the thrust surface of the support bearing according to the embodiment of the present disclosure;

[0024] Figure 4 A schematic diagram of the oil circuit structure of the support bearing described in the embodiment of the present disclosure;

[0025] Figure 5 The oil path distribution and flow diagram of the support bearing described in the embodiment of the present disclosure;

[0026] Figure 6 It is a schematic diagram of the cross-sectional structure of the support bearing described in the embodiment of the present disclosure.

[0027] Among them, 1-support bearing; 10-bearing body; 11-upper bearing body; 12-lower bearing body; 13-connecting bolt; 14-positioning pin; 15-adjusting bearing block; 16-oil baffle plate; 101-support surface; 102-thrust surface; 103-oil inlet hole; 104-annular channel; 105-oil wedge supply channel; 106-support surface oil storage tank; 1061-notch; 107-support surface oil wedge; 108-annular oil groove; 109-thrust surface oil storage tank; 1091-oil drain port; 110-thrust surface oil wedge; 111-oil return port;

[0028] 2-rotating shaft; 21-journal; 22-pillow block; 23-thrust plate. DETAILED DESCRIPTION

[0029] In order to more clearly understand the above-mentioned objectives, features and advantages of the present disclosure, the scheme of the present disclosure will be further described below. It should be noted that the embodiments of the present disclosure and the features in the embodiments can be combined with each other without conflict.

[0030] In the following description, many specific details are set forth to facilitate a full understanding of the present disclosure, but the present disclosure may also be implemented in other ways different from those described herein; it is obvious that the embodiments in the specification are only part of the embodiments of the present disclosure, rather than all of the embodiments.

[0031] Reference Figure 1 and Figure 2 As shown, the embodiment of the present disclosure provides a support bearing 1, which includes a bearing body 10. The inner wall surface of the bearing body 10 is provided with a support layer, and the surface of the support layer forms a support surface 101. The support surface 101 is used to cooperate with the journal 21 of the rotating shaft 2 to radially support the journal 21; the two side surfaces of the bearing body 10 are respectively provided with thrust layers, and the surface of the thrust layers forms thrust surfaces 102. The thrust surfaces 102 are used to cooperate with the pillow blocks 22 (or thrust plates 23) located on both sides of the journal 21 of the rotating shaft 2 to limit the axial movement of the rotating shaft 2.

[0032] Specifically, the existing support bearings usually only have a support surface for supporting function on the contact surface between the support bearing and the shaft neck corresponding to the radial direction. If the thrust function is to be realized at the same time, a thrust bearing independent of the support bearing is required. The thrust bearing generally adopts multiple movable blocks to act on the thrust plate along the axial direction to play an axial supporting and limiting role. This not only increases the manufacturing cost, but also makes inspection and maintenance difficult. The support bearing 1 provided in the embodiment of the present disclosure is based on the structure of a conventional support bearing, and thrust layers are respectively arranged on the two side surfaces of the bearing body 10 of the support bearing 1, and thrust surfaces 102 are formed on the surface of the thrust layers. The thrust surfaces 102 cooperate with the pillow blocks 22 on both sides of the shaft diameter 21 of the rotating shaft 2 to limit the axial movement of the rotating shaft 2, thereby realizing the thrust and limiting functions. At the same time, two thrust surfaces 102 are arranged on one support bearing 1, and the two thrust surfaces 102 are respectively cooperated with the pillow blocks 22 (or thrust plates 23) on both sides of the journal 21 of the rotating shaft 2 to limit the axial movement of the rotating shaft 2. In this way, in the case of low axial thrust load, one support bearing 1 can realize the axial thrust and limiting effects on the rotating shaft 2 while supporting the journal 21, without the need to add a separate thrust bearing, which greatly shortens the size requirements of the journal, reduces costs, and facilitates maintenance.

[0033] In specific implementation, the support layer and the thrust layer can be an integrally cast structure. Specifically, an alloy layer is integrally cast on the inner wall surface and both side surfaces of the bearing body 10. The alloy layer formed on the inner wall surface of the bearing body 10 is mainly used for supporting, and can be called a support layer; the alloy layer formed on the two side surfaces of the bearing body 10 mainly plays a thrust role, and can be called a thrust layer. In other words, the thrust layer can be cast on the bearing body 10 using the same material as the support layer (such as babbitt alloy), and then the surface of the support layer (which can be called the support surface) and the surface of the thrust layer (which can be called the thrust surface) are respectively processed to form an oil wedge and an oil storage tank, so as to realize a bearing structure with an integrated thrust surface and a support surface.

[0034] In some embodiments of the present disclosure, referring to Figure 1 As shown, the bearing body 10 includes at least two bearing blocks, and at least two bearing blocks are arranged around the same axis to form a bearing body with an annular structure. In other words, the support bearing 1 adopts a split bearing, and the support bearing 1 is composed of at least two independent bearing blocks, so as to facilitate the smooth assembly of the support bearing 1 and the rotating shaft 2.

[0035] In a specific embodiment, referring to Figure 1 As shown, the bearing body 10 includes two pads, which can be respectively called an upper pad 11 and a lower pad 12. The upper pad 11 and the lower pad 12 can be connected and fixed by connecting bolts 13 to form a bearing body with an annular structure. Of course, the number of pads is not limited to two, and can also be 3, 4 or more.

[0036] Reference Figures 3 to 6 As shown, the bearing body 10 is provided with an oil inlet hole 103 and a main oil supply channel connected with the oil inlet hole 103, and the support surface 101 is provided with a support surface oil wedge 107 and a support surface oil storage tank 106 for supplying oil to the support surface oil wedge 107, and the support surface oil storage tank 106 is connected with the main oil supply channel. By providing the main oil supply channel for providing lubricating oil on the bearing body 10, and providing the support surface oil storage tank 106 connected with the main oil supply channel on the support surface 101, oil is supplied to the support surface oil wedge 107, and sufficient oil is supplied to the support surface oil wedge 107. In this way, under the conditions of appropriate lubricating oil supply and rotation speed of the shaft 2, a first rigid oil film can be formed at the support surface oil wedge 107 of the support surface 101, and the first rigid oil film can play a role in supporting the shaft 2 so that the shaft 2 does not directly contact the support bearing 1, so that the journal 21 and the support bearing 1 can be protected from wear when the shaft 2 rotates.

[0037] Specifically, refer to Figure 5 and Figure 6 As shown, there are multiple support surface oil wedges 107 and they are arranged in sequence along the circumference of the support surface 101, and a support surface oil storage tank 106 is provided on one side of each support surface oil wedge 107. The number of support surface oil wedges 107 can be reasonably set according to actual conditions and is not specifically limited here.

[0038] Continue to refer to Figure 5 and Figure 6 As shown, the bearing body 10 is provided with an oil inlet hole 103, and the main oil supply channel includes an annular channel 104 connected to the oil inlet hole 103, and an oil wedge supply channel 105 connected to the annular channel 104. The number of the oil wedge supply channels 105 and the supporting surface oil storage grooves 106 are equal and connected one by one. In this way, the lubricating oil enters the supporting bearing 1 from the oil inlet hole 103, fills the annular channel 104, and then enters the supporting surface oil storage groove 106 through the oil wedge supply channel 105 connected to the annular channel 104, and supplies oil to the supporting surface oil wedge 107. The supporting surface oil wedge 107 and the journal 21 form an oil film to support the rotating shaft 2.

[0039] Continue to refer to Figures 3 to 6As shown, annular oil grooves 108 are respectively provided at the connection between the support surface 101 and the thrust surfaces 102 on both sides, and notches 1061 are respectively opened on both sides of the support surface oil storage groove 106, and the support surface oil storage groove 106 is connected with the annular oil grooves 108 on both sides through the notches 1061; a thrust surface oil wedge 110 and a thrust surface oil storage groove 109 for supplying oil to the thrust surface oil wedge 110 are provided on the thrust surface 102, and the thrust surface oil storage groove 109 is connected with the annular oil groove 108. By setting an annular oil groove 108 at the connection between the supporting surface 101 and the thrust surface 102, and setting notches 1061 on both sides of the supporting surface oil storage groove 106 to communicate with the annular oil grooves 108 on both sides, the supporting surface oil storage groove 106 can be used to distribute the lubricating oil flowing in from the main oil supply channel in parallel, so that part of the lubricating oil can be distributed to the annular oil grooves 108 on both sides to supply oil to the thrust surface oil wedge 110. Under the conditions of appropriate lubricating oil supply and rotation speed of the shaft 2, a second rigid oil film can be formed at the thrust surface oil wedge 110 of the thrust surface 102, thereby limiting the axial displacement trend of the shaft 2, so that the shaft 2 cannot move under the cooperation of the thrust surface 102 of the support bearing 1 and the pillow block 22 (or thrust plate 23) of the shaft 2, thereby playing the thrust and limiting functions.

[0040] The above structure cleverly adopts the method of setting an annular oil groove 108 at the connection between the support surface 101 and the thrust surface 102, and setting notches 1061 on both sides of the support surface oil storage groove 106 that are connected to the annular oil grooves 108 on both sides. In this way, the support surface oil storage groove 106 can be used to distribute the lubricating oil flowing in from the main oil supply channel in parallel. Specifically, the width of the support surface oil storage groove 106 can be set to be close to the width of the support surface oil wedge 107 to ensure that the support surface oil wedge 107 is adequately supplied with oil. At the same time, notches 1061 are opened on both sides of the support surface oil storage groove 106 to distribute part of the lubricating oil to the annular oil grooves 108 on both sides to supply oil to the thrust surface oil wedge 110, thereby realizing the parallel connection of the lubricating oil oil circuit of the support surface 101 and the lubricating oil oil circuit of the thrust surface 102, avoiding the series connection of the two oil circuits resulting in a high oil temperature in the rear branch circuit, which cannot achieve the effect of lubricating oil cooling, and at the same time avoiding the interference of the support surface bearing gap and the thrust surface bearing gap on the main circuit lubricating oil flow.

[0041] Specifically, refer to Figure 3 and Figure 5 As shown, there are multiple thrust surface oil wedges 110 and they are evenly distributed along the circumference of the thrust surface 102, and a thrust surface oil storage groove 109 is provided on one side of each thrust surface oil wedge 110. The number of thrust surface oil wedges 110 can be reasonably set according to actual conditions and is not specifically limited here.

[0042] In specific implementation, the annular oil groove 108 can be directly connected to the notches 1061 on both sides of the support surface oil storage groove 106, and the oil supply flow of the two parallel branches can be distributed by adjusting the size of the notch 1061. An equalized pressure oil storage structure is formed in the annular oil groove 108, and oil is evenly supplied to the thrust surface oil wedge 110 through the thrust surface oil storage groove 109. In this way, both the support surface 101 and the thrust surface 102 can be cooled by lubricating oil at a lower temperature. At the same time, the main lubricating oil flow is the sum of the two branches, and is not interfered with by the inconsistent sizes of the support surface gap and the thrust surface gap.

[0043] Continue to refer to Figure 3 and Figure 5 As shown, the bearing body 10 is provided with an oil return port 111, and the thrust surface oil storage groove 109 has an oil discharge port 1091 connected to the oil return port 111 to discharge excess lubricating oil through the oil discharge port 1091. The discharged lubricating oil eventually gathers in the oil return port 111 and flows into the bearing seat.

[0044] Reference Figure 1 and Figure 2 As shown, oil baffles 16 are provided on both sides of the bearing body 10, and the oil baffles 16 are used to seal with the outer side surface of the pillow block 22 of the rotating shaft 2 to collect and recover the lubricating oil so as to realize the recycling of the lubricating oil through the lubricating oil circulation system.

[0045] In a specific implementation, the oil baffle plate 16 may include at least two arc-shaped oil baffle plate segments, and the at least two arc-shaped oil baffle plate segments together form an annular oil baffle plate; an annular step surface is provided at one end of the side of the bearing body 10 close to its axis, and the thrust layer is provided on the annular step surface; the oil baffle plate 16 is provided on the outer side of the thrust layer along the axial direction, specifically, the outer edge of the oil baffle plate 16 is connected to the side of the bearing body 10 located outside the thrust layer, and the inner edge of the oil baffle plate 16 abuts against the outer side surface of the pillow block 22 of the rotating shaft 2 to form a seal.

[0046] In a specific embodiment, referring to Figure 3 , Figure 4 and Figure 5As shown, the thrust surface oil wedge 110 can be specifically designed as a fan-shaped oil wedge, and a plurality of radial fan-shaped oil wedges distributed along the circumference are evenly distributed on the thrust surface 102. The function of the fan-shaped oil wedge is that when the lubricating oil flows into the oil wedge at a certain pressure, the rotating shaft 2 forms a rigid oil film with the bearing shell at the fan-shaped oil wedge during rotation, and the rigid oil film protects the rotating shaft 2 and the bearing shell from wear. In order to ensure that the circumference of the supporting surface 101 is sufficiently supplied with oil, a thrust surface oil storage groove 109 is provided on one side of each fan-shaped oil wedge. The thrust surface oil storage groove 109 can be specifically designed as a U-shaped oil storage groove to ensure that sufficient lubricating oil is stored in front of each fan-shaped oil wedge. One end of each U-shaped oil storage groove is connected to the annular oil groove 108 for introducing the main lubricating oil into the U-shaped oil storage groove. The other end of each U-shaped oil storage groove is provided with an oil discharge port 1091 for discharging excess lubricating oil as a bypass of the fan-shaped oil wedge. Oil baffles 16 are provided on both sides of the bearing shells. The oil baffles 16 are used to seal with the outer side surface of the pillow block 22 of the rotating shaft 2 to collect and recover the lubricating oil so as to circulate the lubricating oil through the lubricating oil circulation system.

[0047] Reference Figure 5 As shown, the arrows in the figure indicate the flow direction of the lubricating oil. In specific implementation, the lubricating oil enters the supporting bearing 1 from the oil inlet hole 103, fills the annular channel 104, and then enters the supporting surface oil storage groove 106 through the oil wedge oil supply channel 105 connected to the annular channel 104. After the lubricating oil enters the supporting surface oil storage groove 106, it will be divided into two paths. One path directly enters the supporting surface oil wedge 107 to form an oil film with the shaft neck 21 to support the rotating shaft 2, and the other path enters the annular oil groove 108 through the notches 1061 on both sides of the supporting surface oil storage groove 106. The annular oil groove 108 also collects a part of the lubricating oil flowing from the gap of the supporting surface 101. The lubricating oil will further flow into the thrust surface oil storage groove 109 to supply oil to the thrust surface oil wedge 110. The lubricating oil forms an oil film with the pillow block 22 (or thrust plate 23) at the thrust surface oil wedge 110 to play a thrust role. Finally, the lubricating oil is collected to the oil return port 111 below through the oil discharge port 1091 of the thrust surface oil storage groove 109 and flows into the bearing seat.

[0048] In a specific embodiment of the present disclosure, Figure 1As shown, the support bearing 1 adopts a three-oil wedge structure, and the two sides of the support bearing 1 are respectively provided with 12 thrust surface oil wedges 110, and an oblique section structure is adopted. The support bearing 1 is mainly composed of an upper bearing body 11 and a lower bearing body 12. The inner wall surface of the bearing body is provided with a support surface 101. The bearing body cooperates with the journal 21 of the rotating shaft 2 to realize the support function. The two side surfaces of the bearing body are respectively provided with thrust surfaces 102. The bearing body cooperates with the pillow blocks 22 on both sides of the journal 21 to realize the thrust function. The connecting bolts 13 serve to fix the upper bearing body 11 and the lower bearing body 12 together, and the two pairs of diagonal bolts are hinged hole bolts that also serve as positioning; the locating pins 14 serve to limit and position the bearing body and the bearing seat; the adjusting pad 15 is connected and fixed to the bearing body, and is used to cooperate with the annular groove on the bearing seat to support and fix the entire bearing shell; the thickness of the gasket between the adjusting pad 15 and the bearing body can be adjusted to adjust the relative position of the bearing shell; the oil baffle plates 16 are installed on both sides of the bearing shell, and cooperate with the pillow block 22 (or thrust plate 23) to seal and collect lubricating oil; other accessories such as high-pressure top oil channels and bearing temperature measuring elements can also be installed on the bearing shell.

[0049] The disclosed embodiment also provides a generator set, including the support bearing 1 of any of the above embodiments, and thus has the beneficial effects of the support bearing 1 of any of the above embodiments, which will not be described in detail here. Specifically, the generator set can be a pulse generator set, and of course, the generator set can also be other types of generator sets.

[0050] In a specific embodiment, the support bearing 1 provided in the above embodiment of the present disclosure can be used as a bearing for the supporting end bearing of the 15T flywheel of the 100MW / 400MJ inertial energy storage pulse generator set. The support bearing 1 can realize the axial limit and thrust function of the rotating shaft 2 while realizing the support function of the journal 21. The overall structure of the support bearing 1 of the above embodiment is only about 10mm wider than that of the ordinary support bearing, which greatly shortens the journal length of the rotating shaft and reduces the difficulty and workload of inspection and maintenance.

[0051] Of course, the support bearing 1 of the above embodiment of the present disclosure is not limited to use in generator sets, but is also suitable for other applications with smaller axial thrust loads. As long as they do not deviate from the design concept of the present disclosure, they should be within the protection scope of the present disclosure.

[0052] In summary, the support bearing and generator set provided by the present invention directly add thrust layers on both sides of the support bearing on the basis of the conventional support bearing, and form thrust surfaces on the surfaces of the thrust layers. The thrust surfaces cooperate with the pillow blocks on both sides of the shaft diameter to limit the axial movement of the shaft, thereby realizing the thrust and limit functions. At the same time, the lubricating oil path is cleverly designed to solve the problem of mutual interference between the support surface oil circuit and the thrust surface oil circuit, and the lubricating oil flow of the support surface and the thrust surface is reasonably distributed to ensure the working conditions of the support surface and the thrust surface to form an oil film during operation. In this way, in situations where the axial thrust load is low, such a simple structure can be used to achieve the thrust and limit effects on the axial direction of the shaft while supporting the shaft neck, thereby greatly shortening the size requirements of the shaft neck, reducing costs, and facilitating maintenance.

[0053] It should be noted that, in this article, relational terms such as "first" and "second" are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device. In the absence of further restrictions, the elements defined by the sentence "comprise a ..." do not exclude the existence of other identical elements in the process, method, article or device including the elements.

[0054] The above description is only a specific embodiment of the present disclosure, so that those skilled in the art can understand or implement the present disclosure. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present disclosure. Therefore, the present disclosure will not be limited to the embodiments described herein, but will conform to the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A support bearing, characterized in that: The support bearing (1) comprises a bearing body (10), the inner wall surface of the bearing body (10) is provided with a support layer, the surface of the support layer forms a support surface (101), and the support surface (101) is used to cooperate with the journal (21) of the rotating shaft (2) to radially support the journal (21); The two side surfaces of the bearing shell body (10) are respectively provided with thrust layers, and the surface of the thrust layers forms thrust surfaces (102). The thrust surfaces (102) are used to cooperate with the pillow blocks (22) located on both sides of the journal (21) of the rotating shaft (2) to limit the axial movement of the rotating shaft (2); The bearing shell body (10) is provided with an oil inlet hole (103) and a main oil supply channel connected to the oil inlet hole (103); the supporting surface (101) is provided with a supporting surface oil wedge (107) and a supporting surface oil storage groove (106) for supplying oil to the supporting surface oil wedge (107); the supporting surface oil storage groove (106) is connected to the main oil supply channel; Annular oil grooves (108) are respectively provided at the connection points between the support surface (101) and the thrust surfaces (102) on both sides, and notches (1061) are respectively provided on both sides of the support surface oil storage groove (106), and the support surface oil storage groove (106) is connected with the annular oil grooves (108) on both sides through the notches (1061); The thrust surface (102) is provided with a thrust surface oil wedge (110) and a thrust surface oil storage groove (109) for supplying oil to the thrust surface oil wedge (110), and the thrust surface oil storage groove (109) is communicated with the annular oil groove (108).

2. The support bearing according to claim 1, characterized in that: The support layer and the thrust layer are an integrally cast structure.

3. The support bearing according to claim 1, characterized in that: The bearing shell body (10) comprises at least two shell blocks, and the at least two shell blocks are arranged around the same axis to form a bearing shell body with an annular structure.

4. The support bearing according to claim 1, characterized in that: The thrust surface oil wedges (110) are multiple in number and are evenly distributed along the circumference of the thrust surface (102), and each thrust surface oil wedge (110) is provided with the thrust surface oil storage groove (109) on one side along the circumference.

5. The support bearing according to claim 1, characterized in that: The bearing shell body (10) is provided with an oil return port (111), and the thrust surface oil storage groove (109) has an oil discharge port (1091) communicated with the oil return port (111).

6. The support bearing according to claim 1, characterized in that: The supporting surface oil wedges (107) are multiple in number and are arranged in sequence along the circumference of the supporting surface (101), and each supporting surface oil wedge (107) is provided with the supporting surface oil storage groove (106) on one side along the circumference; The main oil supply channel comprises an annular channel (104) communicating with the oil inlet hole (103) and an oil wedge oil supply channel (105) communicating with the annular channel (104); the number of the oil wedge oil supply channels (105) and the supporting surface oil storage grooves (106) are equal and are connected one-to-one.

7. The support bearing according to any one of claims 1 to 6, characterized in that Oil baffles (16) are respectively provided on both sides of the bearing shell body (10), and the oil baffles (16) are used to seal and cooperate with the outer side surface of the pillow block (22) of the rotating shaft (2).

8. A generator set, characterized in that: It comprises a support bearing (1) as claimed in any one of claims 1 to 7.

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