Fan bearing assembly
By introducing helical blades and loop oil pipes into the fan bearing assembly, dynamic supply and cooling of lubricating oil are achieved, solving the problems of bearing separation and wear during fan start-up, and ensuring the stable operation and safety of the fan.
Patent Information
- Application Number
- CN202520231899.1
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-02-14
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2035-02-14
AI Technical Summary
Existing wind turbine bearings may experience axial force in the opposite direction during startup compared to stable operation, leading to bearing disengagement, overheating, abnormal noise, or even burnout. Furthermore, they cannot achieve dynamic lubrication and protection, and wear is easily aggravated, especially when lubrication is insufficient or the oil quality does not meet requirements.
A fan bearing assembly was designed, comprising a bearing housing, a rotating shaft, lubricating oil, an oil passage, and helical blades. The helical blades and looped oil pipes enable dynamic supply and cooling of lubricating oil, while the heat dissipation fins provide dynamic lubrication and protection.
It effectively achieves dynamic lubrication and protection of the bearings, avoiding wear caused by temperature rise and insufficient lubrication, and ensuring the safe and reliable operation of the fan.
Smart Images
Figure CN223563102U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model belongs to fan bearing technical field, concretely relates to a fan bearing assembly. BACKGROUND
[0002] Fan bearing is the key mechanical component for supporting rotating parts (such as fan impeller and motor shaft) in fan. It can guide rotation, bear the load transmitted by shaft or shaft parts, and ensure the stability and reliability of fan operation. In use, fan bearing not only bears the radial and axial load from fan impeller, but also plays the role of guiding rotation, reducing friction and wear, which is crucial to the overall performance and life of fan.
[0003] According to the structure type, fan bearing can be divided into two categories of rolling bearing and sliding bearing. Rolling bearing has the advantages of small friction resistance, flexible start, etc., and sliding bearing can bear larger impact and vibration load. In the process of rolling bearing, the direction of axial force when fan starts may be opposite to that when it runs stably, and the existing bearing configuration does not consider this factor, so it may cause bearing to come off, heat, abnormal noise and even burn when used. At the same time, the existing bearing cannot realize dynamic lubrication and protection of bearing, so when lubrication is insufficient or the quality of lubricating oil does not meet the requirements, it is easy to cause the bearing to wear out and even burn.
[0004] Based on this, the utility model provides a fan bearing assembly to solve the problems existing in the prior art. UTILITY MODEL CONTENTS
[0005] Therefore, the main purpose of the utility model is to provide a fan bearing assembly to solve the problems of easy heating and inability to realize dynamic lubrication and protection of bearing existing in traditional fan bearing.
[0006] To achieve the above purpose, the technical scheme of the utility model is as follows:
[0007] A fan bearing assembly, comprising a bearing box and a rotating shaft rotatingly arranged in the bearing box, the inner cavity of the bearing box is filled with lubricating oil, an oil passage is arranged in the bearing box and communicates with the inner cavity, the rotating shaft penetrates the inner cavity and is connected with two bearings arranged in the bearing box, and a spiral blade is arranged outside the part of the rotating shaft arranged in the inner cavity.
[0008] In a preferred embodiment, the outer diameter of the spiral blade matches the inner diameter of the inner cavity.
[0009] In a preferred embodiment, the oil passage channel comprises a first oil guide channel and a second oil guide channel arranged in the bearing box and not communicated with each other, and one end of the first and second oil guide channels is communicated with two ends of the inner cavity, respectively.
[0010] In a preferred embodiment, the communication position of the first and second oil guide channels with the inner cavity is located on the side away from the two bearings.
[0011] In a preferred embodiment, the outer side wall of the bearing box is further provided with a meandering oil pipe, the meandering oil pipe comprises an outer oil pipe and an inner oil pipe communicated with each other, the inner side flow guide cavity of the inner oil pipe is communicated with the first oil guide channel, and the flow guide cavity between the outer oil pipe and the inner oil pipe is communicated with the second oil guide channel through the oil guide hole.
[0012] In a preferred embodiment, the height of the inner oil pipe is lower than the height of the outer oil pipe, and a rubber cover is further arranged on the upper oil port of the inner oil pipe, and the oil port is located directly above the inner oil pipe.
[0013] In a preferred embodiment, the rubber cover can be detachably plugged into the oil port, and a floating plate is arranged at the lower end of the rubber cover through a spring.
[0014] In a preferred embodiment, the outer side of the inner oil pipe is further provided with a plurality of heat dissipation fins, and the heat dissipation fins penetrate through the outer oil pipe and extend to the outside of the outer oil pipe.
[0015] In a preferred embodiment, a plurality of flow guide holes are further arranged on the heat dissipation fins in the flow guide cavity between the outer oil pipe and the inner oil pipe.
[0016] In a preferred embodiment, the two ends of the rotating shaft are further provided with connecting keys matched with the shaft coupling and the fan impeller.
[0017] Compared with the prior art, the fan bearing assembly has the following beneficial effects:
[0018] 1. By arranging the bearing box and the rotating shaft, the inner cavity of the bearing box can be filled with lubricating oil during use to play a lubricating role on the bearing and a cooling role on the rotating shaft, and dynamic lubrication and protection of the bearing can be realized, thereby effectively ensuring the use safety of the fan bearing assembly.
[0019] 2. By arranging the meandering oil pipe and the heat dissipation fins, dynamic cooling of the lubricating oil can be realized during the flow of the lubricating oil, thereby avoiding the increase of the temperature in the bearing box due to the high rotation of the rotating shaft and the bearing during use, and affecting the use safety of the fan bearing assembly.
[0020] 3. By setting the coiled oil pipe and rubber cover, the lubricating oil can be added and replaced in the inner cavity according to the requirement in the use process, and the pressure relief function can be realized in the process of rapid increase of the lubricating oil pressure in the inner cavity, the internal structure of the bearing box machine is protected, and the problems of easy heating of the traditional fan bearing and the problems of unable to realize dynamic lubrication and protection of the bearing are solved. BRIEF DESCRIPTION OF DRAWINGS
[0021] In order to more clearly illustrate the technical scheme in the embodiment of the utility model or the prior art, the drawings needed to be used in the embodiment or the prior art description will be briefly introduced below, and obviously, the drawings in the following description are only some embodiments of the utility model, and for the ordinary skilled in the art, other drawings can be obtained without creative labor.
[0022] Figure 1 It is a use state diagram of the fan bearing assembly of the utility model;
[0023] Figure 2 It is a structure schematic view of the fan bearing assembly of the utility model;
[0024] Figure 3 It is a side view of the fan bearing assembly of the utility model;
[0025] Figure 4 It is a sectional view of the fan bearing assembly of the utility model at A-A section line;
[0026] Figure 5 It is a structure schematic view of the rotating shaft of the utility model;
[0027] Figure 6 It is a local enlarged view of A in the utility model; Figure 3
[0028] Figure 7 It is a sectional view of the coiled oil pipe of the utility model;
[0029] Figure 8 It is a top view of the heat dissipation fin of the utility model.
[0030]
MAIN COMPONENT SYMBOL EXPLANATION
[0031] 1, bearing box; 2, motor; 3, shaft coupling; 4, base; 5, fan impeller; 6, backshaped oil pipe; 7, first sealing end cover; 8, connecting bolt; 9, rotating shaft; 10, rubber cover; 11, heat dissipation fin; 12, rubber seal; 13, first oil guiding channel; 14, second oil guiding channel; 15, second sealing end cover; 16, third sealing plate; 17, inner cavity; 18, helical blade; 19, bearing; 20, connecting key; 21, inner oil pipe; 22, spring; 23, floating plate; 24, oil guiding hole; 25, flow guiding hole; 26, outer oil pipe. DETAILED DESCRIPTION
[0032] The structure of the fan bearing assembly will be further described in detail below in combination with the drawings and embodiments of the present application.
[0033] It should be noted that the embodiments and features in the embodiments in the present application can be combined with each other without conflict. The present application will be described in detail below with reference to the drawings and in combination with the embodiments.
[0034] It should be noted that the terms used herein are only for describing the specific embodiments and are not intended to limit the exemplary embodiments of the present application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, and it should be understood that, when the terms "comprise" and / or "include" are used in the specification, there is a presence of the features, steps, operations, devices, components and / or their combinations.
[0035] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application and the above-described drawings are used to distinguish similar objects and do not necessarily indicate a specific order or sequence. It should be understood that the data used in this way can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein. In addition, the terms "include" and "have" and any variations thereof are intended to cover non-exclusive inclusion, for example, a process, method, system, product or device that includes a series of steps or units does not necessarily have to be limited to those steps or units listed, but can include other steps or units not listed or inherent to these processes, methods, products or devices.
[0036] For purposes of the description hereinafter, spatial relative terms, such as "above", "below", "upper", "lower", and the like, can be used to describe a device or feature's orientation in the figures. Such relative terms can be intended to encompass different orientations of the device or feature in its operation or use or in other stages of its manufacture. For example, if the device or feature is turned over, then a description of a device or feature as above another or below another can be taken to mean that the device or feature is below the other device or feature now that it is turned over. Such relative terms can be taken to include different positions of the device or feature in its operation or use or in other stages of its manufacture. The devices can also be oriented in other ways (rotated 90 degrees or at other orientations) and the spatially relative terms used herein interpreted accordingly.
[0037] As shown in the accompanying drawings for Figures 1-8 The utility model provides a technical scheme:
[0038] A fan bearing assembly, comprising a bearing box 1, a rotating shaft 9 rotatingly arranged in the bearing box 1, the inner cavity 17 of the bearing box 1 is filled with lubricating oil, and an oil passage is further arranged in the bearing box 1 and communicates with the inner cavity 17, the rotating shaft 9 penetrates the inner cavity 17 and is connected with two bearings 19 arranged in the bearing box 1, one end of the rotating shaft 9 is connected with a motor 2 through a coupling 3, and the other end is connected with a fan impeller 5.
[0039] In the above description, the lubricating oil in the inner cavity 17 can be continuously supplied through the oil passage, so that the problem of insufficient lubrication is avoided; meanwhile, the lubricating oil is cooled through the setting of the lubricating oil filtering and cooling assembly, so that the temperature of the rotating shaft 9 and the bearings 19 during use can meet the use requirement, and the temperature of the rotating shaft 9 and the bearings 19 during high-speed rotation is prevented from being too high, which affects the use safety of the fan.
[0040] In one preferred embodiment, as Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 shown, the two ends of the bearing box 1 are respectively provided with a first sealing end cover 7 and a second sealing end cover 15, the first sealing end cover 7 and the second sealing end cover 15 are both installed on the end of the bearing box 1 through inner sealing gaskets and connecting bolts 8, and a third sealing plate 16 is further installed on the second sealing end cover 15, rubber seals 12 are arranged on the first sealing end cover 7 and the third sealing plate 16 and used in cooperation with the rotating shaft 9.
[0041] In the above description, the first sealing end cover 7, the second sealing end cover 15 and the third sealing plate 16 are arranged at both ends of the bearing box 1 to form a sealed lubricating oil flow cavity 17 in the bearing box 1; the first sealing end cover 7 and the second sealing end cover 15 can be fixed and detached through the connecting bolt 8, which facilitates the maintenance of the internal structure of the fan bearing assembly; the rubber seal 12 can realize the sealing effect between the rotating shaft 9 and the bearing box 1, and avoid the problem of oil leakage of the rotating shaft 9 during rotation.
[0042] In a preferred embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the part of the rotating shaft 9 placed in the inner cavity 17 is further provided with a spiral blade 18, the outer diameter of the spiral blade 18 matches the inner diameter of the inner cavity 17, and the outer edge of the spiral blade 18 is in contact with the inner side wall of the inner cavity 17; the connecting key 20 is further arranged at both ends of the rotating shaft 9.
[0043] In the above description, through the arrangement of the spiral blade 18, the lubricating oil in the inner cavity 17 can be pushed by the spiral blade 18 during the rotation of the rotating shaft 9, so that it can flow in the inner cavity 17, thereby playing a role in lubricating and cooling the bearing 19 and cooling the rotating shaft 9, so that the temperature of the rotating shaft 9 and the bearing 19 meets the use requirement; at the same time, through the arrangement of the spiral blade 18, whether the rotating shaft 9 rotates forward or reversely, lubricating oil can exist at the positions of the two bearings 19, thereby protecting the bearings 19. Through the connecting key 20, the rotating shaft 9 can be quickly connected with the shaft coupling 3 and the fan impeller 5.
[0044] In a preferred embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 and Figure 5 , the oil passage includes a first oil guide passage 13 and a second oil guide passage 14 arranged in the bearing box 1 and not communicated with each other, one end of each of the first oil guide passage 13 and the second oil guide passage 14 is communicated with one end of the inner cavity 17, and the communication position is located on the side away from the two bearings 19.
[0045] In the above description, through the communication of the first oil guide passage 13 and the second oil guide passage 14 with the inner cavity 17, the lubricating oil in the inner cavity 17 can be pushed by the spiral blade 18 during use, so that it can flow in the inner cavity 17.
[0046] In a preferred embodiment, as shown in Figure 1 、 Figure 2 、 Figure 3 、 Figure 4 ,Figure 5 , Figure 6 , Figure 7 and Figure 8 As shown, a loop-shaped oil pipe 6 is also provided on the outer wall of the bearing housing 1. The loop-shaped oil pipe 6 includes an outer oil pipe 26 and an inner oil pipe 21 that are interconnected. The inner guide cavity of the inner oil pipe 21 is connected to the first oil guide channel 13. The guide cavity between the outer oil pipe 26 and the inner oil pipe 21 is connected to the second oil guide channel 14 through the oil guide hole 24 on the lower side wall. A number of heat dissipation fins 11 are also provided on the outer side of the inner oil pipe 21. The heat dissipation fins 11 penetrate the outer oil pipe 26 and extend to the outside of the outer oil pipe 26. The height of the inner oil pipe 21 is lower than the height of the outer oil pipe 26, so that oil can flow between the inner oil pipe 21 and the outer oil pipe 26.
[0047] In the above description, the outer oil pipe 26 and the inner oil pipe 21 of the loop-shaped oil pipe 6 can guide the lubricating oil during use. As the lubricating oil flows within the loop-shaped oil pipe 6, it is cooled by the heat dissipation fins 11, thus lowering the temperature of the lubricating oil in the oil circuit system. Simultaneously, several guide holes 25 are also provided on the heat dissipation fins 11 to guide the lubricating oil, ensuring the internal oil circuit is connected. Therefore, regardless of the flow direction of the lubricating oil within the first oil guide channel 13 and the second oil guide channel 14, it can be cooled by the heat dissipation fins 11.
[0048] In a preferred embodiment, such as Figure 1 , Figure 2 , Figure 3 , Figure 4 , Figure 5 , Figure 6 and Figure 7 As shown, a rubber cap 10 is also provided on the oil port of the spiral oil pipe 6. The oil port is located directly above the inner oil pipe 21. The rubber cap 10 is detachably plugged into the oil port, and a float plate 23 is installed at the lower end of the rubber cap 10 by means of a spring 22.
[0049] As described above, lubricating oil can be added to the first oil guide channel 13 through the oil port at the loop oil pipe 6 to replenish the lubricating oil. At the same time, when the rotating shaft 9 rotates at a high speed and the oil pressure in the inner cavity 17 is high, the float plate 23 can move upward under the action of oil pressure to make way during the process of increasing oil pressure, and push the rubber cover 10 to open the oil port, thereby achieving the effect of pressure relief and ensuring the operation of the bearing assembly.
[0050] The use process of the fan bearing assembly comprises: in the process that the motor 2 drives the rotating shaft 9 to rotate, the lubricating oil in the inner cavity 17 is pushed by the spiral blade 18, so that the lubricating oil can flow in the inner cavity 17, and the oil liquid circulation of the first oil guide channel 13 and the second oil guide channel 14 is completed, and the bearing 19 is lubricated; meanwhile, in the process of oil liquid flow, the lubricating oil is cooled by the heat dissipation fin 11, the temperature of the lubricating oil in the oil circuit system is reduced, the protection of the rotating shaft 9 and the bearing 19 in the use process is realized, and the problems that the traditional fan bearing is prone to heat and cannot realize dynamic lubrication and protection of the bearing are solved.
[0051] The above merely describes the preferred embodiments of the utility model, and is not used to limit the protection scope of the utility model.
Claims
1. A wind turbine bearing assembly, comprising a bearing housing (1) and a rotating shaft (9) rotatably disposed within the bearing housing (1), wherein the inner cavity (17) of the bearing housing (1) is filled with lubricating oil, characterized in that: An oil passage is provided in the bearing housing (1) and communicates with the inner cavity (17). The rotating shaft (9) passes through the inner cavity (17) and is connected to two bearings (19) provided in the bearing housing (1). A spiral blade (18) is also provided on the outer side of the part of the rotating shaft (9) placed in the inner cavity (17). The oil passage includes a first oil guide channel (13) and a second oil guide channel (14) disposed in the bearing housing (1) and not connected to each other. One end of the first oil guide channel (13) and the second oil guide channel (14) are respectively connected to both ends of the inner cavity (17).
2. A wind turbine bearing assembly as described in claim 1, characterized in that: The outer diameter of the helical blade (18) matches the inner diameter of the inner cavity (17).
3. A wind turbine bearing assembly as described in claim 1, characterized in that: The first oil guide channel (13) and the second oil guide channel (14) are connected to the inner cavity (17) on opposite sides of the two bearings (19).
4. A wind turbine bearing assembly as described in claim 1, characterized in that: The bearing housing (1) is also provided with a spiral oil pipe (6) on its outer side wall. The spiral oil pipe (6) includes an outer oil pipe (26) and an inner oil pipe (21) that are connected to each other. The inner guide cavity of the inner oil pipe (21) is connected to the first oil guide channel (13). The guide cavity between the outer oil pipe (26) and the inner oil pipe (21) is connected to the second oil guide channel (14) through the oil guide hole (24).
5. A wind turbine bearing assembly as described in claim 4, characterized in that: The height of the inner oil pipe (21) is lower than that of the outer oil pipe (26), and a rubber cap (10) is provided on the upper oil port of the inner oil pipe (21), the oil port being located directly above the inner oil pipe (21).
6. A wind turbine bearing assembly as described in claim 5, characterized in that: The rubber cap (10) is detachably plugged into the oil port, and a float plate (23) is provided at the lower end of the rubber cap (10) via a spring (22).
7. A wind turbine bearing assembly as described in claim 4, characterized in that: Several heat dissipation fins (11) are also provided on the outer side of the inner oil pipe (21), and the heat dissipation fins (11) penetrate the outer oil pipe (26) and extend to the outer side of the outer oil pipe (26).
8. A wind turbine bearing assembly as described in claim 7, characterized in that: Several flow guide holes (25) are also provided on the heat dissipation fins (11) in the flow guide cavity between the outer oil pipe (26) and the inner oil pipe (21).
9. A wind turbine bearing assembly as described in claim 1, characterized in that: The two ends of the rotating shaft (9) are also provided with connecting keys (20), which are matched with the coupling (3) and the fan impeller (5).