Bearing housings, power equipment and circulating lubrication systems

Abstract

This application relates to a bearing housing, power equipment, and circulating lubrication system. The bearing housing includes a main shaft, a housing shell, and a bearing assembly. The housing shell includes a body and at least one end cover. The main shaft passes through the housing shell and the end cover. A first abutment portion is protruding from the outer circumferential surface of the main shaft. The bearing assembly is sleeved on the main shaft and located inside the housing shell. The bearing assembly has a first end and a second end. The first end abuts against the side of the housing shell facing the end cover, and the second end abuts against the end cover and the first abutment portion. In the assembly process, the bearing housing of this application allows the main shaft with the bearing assembly sleeved on one side to be directly inserted into the housing shell. The bearing assembly is prevented from detaching from the main shaft by the positioning of the first abutment portion, thus fixing the end cover and housing shell together for assembly. Compared with the bidirectional assembly method, which is difficult to position, this application uses a unidirectional assembly method, which can effectively reduce the assembly difficulty, ensure the structural compactness between the bearing assembly and the housing shell, and thus ensure assembly accuracy.

Description

Technical Field

[0001] This application relates to the field of bearing lubrication technology, and in particular to bearing housings, power equipment, and circulating lubrication systems. Background Technology

[0002] A bearing housing is a box-like component used to support and lubricate bearings. The bearings inside the housing support the spindle, assisting in its rotation and thus transmitting power.

[0003] Currently, most bearing housings use a two-way assembly method, which makes it difficult to position each bearing during assembly, resulting in assembly difficulties and difficulty in ensuring assembly accuracy. Summary of the Invention

[0004] Therefore, it is necessary to provide a bearing housing, power equipment, and circulating lubrication system to address the aforementioned problems of difficult bearing assembly and difficulty in ensuring assembly accuracy.

[0005] Firstly, a bearing housing includes:

[0006] The enclosure includes a housing and at least one end cap, the end cap being detachably connected to the housing;

[0007] A main shaft is mounted on the housing and the end cover, and a first abutting part is protruding on the outer circumferential surface of the main shaft;

[0008] A bearing assembly is sleeved on the main shaft and located inside the housing. Along the axial direction of the main shaft, the bearing assembly has a first end and a second end. The first end abuts against the side of the housing facing the end cover, and the second end abuts against the end cover and the first abutting part.

[0009] In one embodiment, a second abutting portion is further provided on the outer peripheral surface of the spindle. The second abutting portion and the first abutting portion are spaced apart along the axial direction of the spindle. The bearing assembly includes a first bearing, a first positioning sleeve, a second bearing, a second positioning sleeve and a third bearing arranged in sequence and abutting each other. The third bearing abuts against the first abutting portion, and the side of the first positioning sleeve facing the first abutting portion abuts against the second abutting portion.

[0010] In one embodiment, two end caps are provided, and the two end caps are respectively connected to both sides of the housing along the axial direction of the main shaft. The first bearing and the third bearing respectively abut against the two end caps. The first positioning sleeve is movably sleeved on the main shaft and sealed to the main shaft, and there is a sealed cavity between the first positioning sleeve and the main shaft. The main shaft is provided with a hydraulic channel connecting the outside world and the cavity.

[0011] In one embodiment, a third abutment portion is also provided on the outer peripheral surface of the spindle, and the third abutment portion and the second abutment portion are spaced apart along the axial direction of the spindle; a recessed portion is provided on the inner peripheral surface of the first positioning sleeve, and the third abutment portion is located in the recessed portion. The outer peripheral wall of the spindle, the third abutment portion and the recessed portion cooperate to form the cavity.

[0012] In one embodiment, the housing has a first chamber, a second chamber, and a third chamber. The first bearing, the second bearing, and the third bearing are located in the first chamber, the second chamber, and the third chamber respectively. The second bearing is a thrust bearing, and gas in the first chamber can be unidirectionally introduced into the third chamber through the second bearing. The housing is provided with a communication hole connecting the outside to the third chamber.

[0013] In one embodiment, the bearing housing further includes an oil level regulator disposed on the connecting hole and connected to the oil outlet pipe.

[0014] The aforementioned bearing housing can position the bearing assembly on the spindle through the first abutment part, allowing the spindle with the bearing assembly to be inserted onto the housing on one side during assembly. After the bearing assembly moves into the housing until its first end abuts against the housing, the positioning of the bearing assembly through the first abutment part prevents it from coming off the spindle, thus securing the end cover to the housing and completing the assembly. Compared to the bidirectional assembly method, which is difficult to position, this application effectively reduces assembly difficulty and ensures the structural compactness between the bearing assembly and the housing through a unidirectional assembly method, thereby ensuring assembly accuracy.

[0015] In a second aspect, a power device includes a power unit, a rotor unit, and a bearing housing as described in any of the above embodiments, wherein the power unit is connected to one axial end of the main shaft of the bearing housing, and the rotor unit is connected to the other axial end of the main shaft.

[0016] In one embodiment, an overload protection component is provided between the main shaft and the rotor unit. The overload protection component is configured to separate from the rotor unit when the torque on the main shaft is greater than a preset torque, so as to cut off the power transmission.

[0017] The aforementioned power equipment, by utilizing bearing housings that reduce assembly difficulty and ensure assembly accuracy, can effectively reduce the assembly difficulty of the power equipment and ensure the assembly accuracy of the power equipment.

[0018] Thirdly, a circulating lubrication system includes a circulating mechanism and a bearing housing as described in any of the above embodiments. The circulating mechanism includes an oil tank, a filter, an oil pump, a cooler, and a distributor arranged sequentially and communicating with the bearing housing. A temperature sensor is provided inside the bearing housing. The circulating lubrication system also includes a controller, which is signal-connected to the temperature sensor and the cooler.

[0019] In one embodiment, the bearing housing includes an oil level regulator, the oil tank is connected to the bearing housing via the oil level regulator through a communication hole, and the distributor is connected to the first chamber, the second chamber, and the third chamber of the bearing housing.

[0020] The aforementioned circulating lubrication system can extract lubricating oil from the bearing housing using an oil pump, and then return the lubricating oil to the bearing housing after it has been filtered and cooled by a filter and a cooler. This achieves oil temperature control of the lubricating oil in the bearing housing. Furthermore, since the cooler only cools the lubricating oil when the oil temperature is too high, it can effectively save water consumption for the cooler, making it energy-saving and environmentally friendly. Attached Figure Description

[0021] Figure 1 This is a schematic diagram of the bearing housing structure according to some embodiments of this application.

[0022] Figure 2 This is a schematic diagram of the external structure of the bearing housing according to some embodiments of this application.

[0023] Figure 3 for Figure 1 A magnified view of part A.

[0024] Figure 4 for Figure 1 AA sectional view.

[0025] Figure 5 for Figure 4 A magnified view of part B.

[0026] Figure 6 for Figure 1 A magnified view of part C.

[0027] Figure 7 for Figure 6 A schematic diagram of the structure between the spindle, rotor unit and overload protection components.

[0028] Figure 8 This is a schematic diagram of the structure of a power device according to some embodiments of this application.

[0029] Figure 9 for Figure 8 A magnified view of part D.

[0030] Figure 10This is a schematic diagram of the structure between the bearing housing and the lubrication circulation system in some embodiments of this application.

[0031] Figure label:

[0032] 1. Bearing housing;

[0033] 11. Main shaft; 111. First abutment part; 112. Second abutment part; 113. Third abutment part; 114. First fixed end; 115. Second fixed end; 116. Receiving groove;

[0034] 12. Housing shell; 121. First end cap; 122. Second end cap; 123. Housing body; 124. Lubricating oil inlet; 125. Connecting hole; 126. Preload spring;

[0035] 13. Bearing assembly; 131. First bearing; 132. First locating sleeve; 133. Second bearing; 134. Second locating sleeve; 135. Third bearing; 136. Sealing ring;

[0036] 14. Cavity; 141. First cavity surface; 142. Second cavity surface;

[0037] 15. Oil level regulator; 151. Housing; 152. Overflow pipe; 153. Sealing cover; 154. Adjusting handle; 155. Oil inlet channel; 156. Oil outlet channel; 157. Oil storage chamber;

[0038] 16. Oil level sight glass;

[0039] 17. Oil drain valve;

[0040] 18. Overload protection components; 181. Safety pin; 182. Torque limiting spring;

[0041] 2. Power equipment; 21. Power unit; 22. Rotor unit; 23. Connecting rod; 24. Housing; 25. Base; 26. Tapered hole; 27. Connecting section;

[0042] 3. Lubrication circulation system; 31. Oil tank; 32. Filter; 33. Oil pump; 34. Cooler; 35. Distributor; 36. Temperature sensor; 37. Controller; 38. Wastewater collection point. Detailed Implementation

[0043] To make the above-mentioned objectives, features, and advantages of this application more apparent and understandable, the specific embodiments of this application are described in detail below with reference to the accompanying drawings. Many specific details are set forth in the following description to provide a thorough understanding of this application. However, this application can be implemented in many other ways different from those described herein, and those skilled in the art can make similar modifications without departing from the spirit of this application. Therefore, this application is not limited to the specific embodiments disclosed below.

[0044] In the description of this application, it should be understood that if terms such as "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential" appear, these terms indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this application.

[0045] Furthermore, where the terms "first" and "second" appear, these terms are for descriptive purposes only and should not be construed as indicating or implying relative importance or implicitly specifying the number of technical features indicated. Thus, a feature defined with "first" or "second" may explicitly or implicitly include at least one of that feature. In the description of this application, where the term "multiple" appears, "multiple" means at least two, such as two, three, etc., unless otherwise explicitly specified.

[0046] In this application, unless otherwise expressly specified and limited, the terms "installation," "connection," "joining," and "fixing," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral part; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication of two components or the interaction between two components, unless otherwise expressly limited. Those skilled in the art can understand the specific meaning of the above terms in this application based on the specific circumstances.

[0047] In this application, unless otherwise expressly specified and limited, the use of descriptions such as "above" or "below" the second feature indicates that the first and second features are in direct contact or indirect contact via an intermediate medium. Furthermore, "above," "on top of," and "over" the second feature can mean that the first feature is directly above or diagonally above the second feature, or simply that the first feature is at a higher horizontal level than the second feature. Similarly, "below," "below," and "under" the second feature can mean that the first feature is directly below or diagonally below the second feature, or simply that the first feature is at a lower horizontal level than the second feature.

[0048] It should be noted that if an element is referred to as being "fixed to" or "set on" another element, it can be directly on the other element or there may be an intervening element. If an element is considered to be "connected to" another element, it can be directly connected to the other element or there may be an intervening element. If so, the terms "vertical," "horizontal," "upper," "lower," "left," "right," and similar expressions used in this application are for illustrative purposes only and do not represent the only possible implementation.

[0049] See Figures 1-2 One embodiment of this application provides a bearing housing 1, including a spindle 11, a housing 12, and a bearing assembly 13. The housing 12 provides a space for the bearing assembly 13, and the bearing assembly 13 supports the spindle 11 to assist the spindle 11 in rotating and enabling the spindle 11 to transmit power.

[0050] In a specific configuration, the housing 12 includes a housing body 123 and at least one end cap. The housing body 123 has space for accommodating the bearing assembly 13 for installation. The end cap is detachably connected to the housing body 123 to seal the spindle 11.

[0051] More specifically, along the axial direction of the main shaft 11, both ends of the housing 123 have openings, through which the bearing assembly 13 can be installed into the housing 123. The housing 12 includes a first end cover 121, a second end cover 122, and the housing 123, all coaxial with the main shaft 11. The first end cover 121 and the second end cover 122 are respectively disposed at both ends of the housing 123 and cover the two openings respectively, thereby shielding the bearing assembly 13 inside the housing 123. In addition, both the first end cover 121 and the second end cover 122 are provided with oil seals that abut against the main shaft 11 to ensure a sealing effect between the housing 12 and the main shaft 11.

[0052] The spindle passes through the housing 123 and the end cover, and a first abutment portion 111 protrudes from the outer circumferential surface of the spindle 123. Specifically, the first abutment portion 111 is fitted onto the outer circumferential surface of the spindle 11, so that there is a large contact area between the bearing assembly 13 and the first abutment portion 111. The first abutment portion 111 is integrally formed with the spindle 11 for manufacturing purposes.

[0053] See Figure 1 The bearing assembly 13 is sleeved on the spindle 11 and located inside the housing 123. Specifically, the inner circumferential surface of the bearing assembly 13 contacts the outer circumferential surface of the spindle 11, and the outer circumferential surface of the bearing assembly 13 contacts the inner circumferential surface of the housing 123, so as to ensure the stability of the bearing assembly 13 between the spindle 11 and the housing 123.

[0054] Along the axial direction of the main shaft 11, the bearing assembly 13 has a first end and a second end. The first end abuts against the side of the housing 123 facing the end cover, and the second end abuts against the end cover and the first abutment portion 111. Specifically, the bearing assembly 13 is sleeved on the main shaft 11 and abuts against the first abutment portion 111. The first abutment portion 111 prevents the bearing assembly 13 from moving away from the first end cover 121, thus cooperating with the first end cover 121 to achieve its positioning on the main shaft 11. The second end can simultaneously abut against the second end cover 122 and the first abutment portion 111 to further ensure the stability of the bearing assembly 13 with the housing 12 and the main shaft 11.

[0055] During installation, the bearing housing 1 of this application can first be connected to the mounting bracket of the power equipment 2 to ensure stability. Then, the first end cap 121 is connected to the housing 123, and the bearing assembly 13 is fitted onto the main shaft 11 via the first fixed end 114. The first fixed end 114 of the main shaft 11 is then sequentially passed through the housing 123 and the first end cap 121, allowing the bearing assembly 13 to enter the housing 123 under the traction of the main shaft 11. During traction, the second end of the bearing assembly 13 gradually approaches and abuts against the first abutment portion 111, while the first end of the bearing assembly 13 gradually approaches and abuts against the first end cap 121. When the main shaft 11 can no longer move due to the bearing assembly 13 simultaneously abutting against both the first end cap 121 and the first abutment portion 111, the second end cap 122 is then connected to the housing 123 to complete the assembly. Compared to the current bidirectional assembly method which is difficult to position, this application uses a unidirectional assembly method, which can effectively reduce the assembly difficulty, ensure the structural compactness between the bearing assembly 13 and the housing 12, and thus ensure the assembly accuracy.

[0056] See Figure 1 In one embodiment, along the axial direction of the main shaft 11, the main shaft 11 is provided with a second abutting portion 112 that is spaced apart from the first abutting portion 111. The bearing assembly 13 includes a first bearing 131, a first positioning sleeve 132, a second bearing 133, a second positioning sleeve 134 and a third bearing 135 arranged in sequence and abutting each other. The third bearing 135 abuts against the first abutting portion 111, and the side of the first positioning sleeve 132 facing the first abutting portion 111 abuts against the second abutting portion 112.

[0057] Specifically, the bearing assembly 13 includes a first positioning sleeve 132 and at least two bearings. The first positioning sleeve 132 is located between the two bearings, and its side facing the second end cover 122 and the first abutment portion 111 abuts against the second abutment portion 112. This allows the second abutment portion 112 to abut against the first positioning sleeve 132 when the main shaft 11 pulls the bearing assembly 13 into the housing 123, assisting the first abutment portion 111 in preventing the bearing assembly 13 from moving away from the first end cover 121.

[0058] Furthermore, the second abutment portion 112 is fitted onto the outer circumferential surface of the main shaft 11 to provide a larger contact area between the bearing assembly 13 and the second abutment portion 112. The second abutment portion 112 is integrally formed with the main shaft 11 for ease of manufacturing. The outer diameter of the second abutment portion 112 is smaller than the outer diameter of the first abutment portion 111 so that the second abutment portion 112 does not interfere with the main shaft 11's insertion of the bearing assembly 13.

[0059] See Figure 1 and Figure 3 In one embodiment, the bearing assembly 13 includes a first bearing 131, a first positioning sleeve 132, a second bearing 133, a second positioning sleeve 134, and a third bearing 135 arranged sequentially and abutting against each other. The first bearing 131 abuts against a first end cap 121. Specifically, the axial ends of the first bearing 131 abut against the first end cap 121 and the first positioning sleeve 132, respectively; the axial ends of the second bearing 133 abut against the first positioning sleeve 132 and the second positioning sleeve 134, respectively; and the axial ends of the third bearing 135 abut against the first positioning sleeve 132 and the second end cap 122, respectively. Both the first positioning sleeve 132 and the second positioning sleeve 134 are elastic to further enhance the abutting effect between the first bearing 131 and the first end cap 121, and between the third bearing 135 and the second end cap 122.

[0060] The first positioning sleeve 132 is in a sealed state with the main shaft 11. Specifically, the inner circumferential surface of the first positioning sleeve 132 is provided with at least two annular fixing grooves coaxial with it, and a sealing ring 136 is provided in the annular fixing groove. The inner circumferential surface of the sealing ring 136 and the inner circumferential surface of the first positioning sleeve 132 both abut against the outer circumferential surface of the main shaft 11. The sealing effect between the first positioning sleeve 132 and the main shaft is further ensured by the assistance of the sealing ring 136.

[0061] A cavity 14 exists between the first positioning sleeve 132 and the main shaft 11. The main shaft 11 is provided with a hydraulic channel connecting the outside to the cavity 14. Specifically, the inlet of the hydraulic channel is located on the outside of the housing 12, and the outlet of the hydraulic channel is located on the inside of the housing 12 and communicates with the cavity 14. When the first bearing 131 needs to be repaired or disassembled, high-pressure oil can be introduced into the hydraulic channel through the inlet and into the cavity 14 through the outlet. The introduced high-pressure oil can increase the space of the cavity 14, thereby allowing the first positioning sleeve 132 to move axially on the main shaft 11, thereby pushing the first bearing 131 to move on the main shaft 11, allowing the first bearing 131 to move away from the second end cover 122, thus enabling the first bearing 131 to be disassembled without damage and efficiently.

[0062] It is worth mentioning that the cavity 14 is located between two adjacent sealing rings 136, which allows the sealing rings 136 to effectively seal the high-pressure oil and prevent oil leakage due to pressure, thereby affecting the pushing of the first bearing 131.

[0063] See Figure 1 and Figure 3 In one embodiment, a third abutment portion 113 is provided on the main shaft 11 along the axial direction of the main shaft 11, spaced apart from the second abutment portion 112. Specifically, the second abutment portion 112 is disposed between the third abutment portion 113 and the first abutment portion 111, and the outer diameter of the second abutment portion 112 is larger than the outer diameter of the third abutment portion 113 and smaller than the outer diameter of the first abutment portion 111, so that the third abutment portion 113 and the second abutment portion 112 do not affect the main shaft 11's passage through the bearing assembly 13.

[0064] The first positioning sleeve 132 has a recessed portion on its inner circumferential surface, and the third abutment portion 113 is located within the recessed portion. The cavity 14 is formed by the main shaft 11, the third abutment portion 113, and the recessed portion. Specifically, the first positioning sleeve 132 has an annular recessed portion on its inner circumferential surface, and the third abutment portion 113 is fitted onto the outer circumferential surface of the main shaft 11, with the outer circumferential surface of the third abutment portion 113 abutting against a portion of the inner circumferential surface of the recessed portion. The cavity 14 is formed by the cooperation of a portion of the outer circumferential surface of the main shaft 11, the inner circumferential surface of the recessed portion facing the main shaft 11, the first cavity surface 141 of the third abutment portion 113 located between the main shaft 11 and the recessed portion, and the second cavity surface 142 of the recessed portion facing the first cavity surface 141. When high-pressure oil is introduced into cavity 14 through hydraulic channel, the distance between the first cavity surface 141 and the second cavity surface 142 increases, thereby causing the first positioning sleeve 132 to move away from the second end cover 122 along its axial direction, so as to push the first bearing 131 out of the housing 123.

[0065] Furthermore, it is understood that in this application, the third abutment portion 113 is integrally formed with the main shaft 11 for manufacturing purposes.

[0066] See Figure 1 and Figure 3 In one embodiment, the housing 12 has a first chamber, a second chamber, and a third chamber, with a first bearing 131, a second bearing 133, and a third bearing 135 located in the first, second, and third chambers, respectively. The second bearing 133 is a thrust bearing, and gas in the first chamber can be unidirectionally introduced into the third chamber via the second bearing 133. The housing 12 is provided with a communication hole 125 connecting the outside to the third chamber.

[0067] Specifically, the first bearing 131 is located in the first chamber and has a gap with the inner circumferential surface of the first chamber; the second bearing 133 is located in the second chamber and has a gap with the inner circumferential surface of the second chamber; and the third bearing 135 is located in the third chamber and has a gap with the inner circumferential surface of the third chamber. The housing 12 is provided with lubricating oil inlets 124 that communicate with the first chamber, the second chamber, and the third chamber respectively. Lubricating oil can enter the first chamber, the second chamber, and the third chamber through the three lubricating oil inlets 124 respectively to force lubricate the first bearing 131, the second bearing 133, and the third bearing 135 respectively.

[0068] The second bearing 133 is primarily used for axial support of the main shaft 11, serving as a thrust bearing to withstand the axial force generated during the operation of the rotor unit 22 of the power equipment 2. The second bearing 133 is located within a second chamber, situated between the first and third chambers. Gas in the first chamber can be unidirectionally introduced into the third chamber via the second bearing 133. The housing 12 has a connecting hole 125 that connects to the outside and the third chamber to maintain pressure balance within the housing 12. Specifically, due to the pumping effect generated during the operation of the thrust bearing, the oil level and pressure in the third chamber are higher than those in the first chamber, which can lead to overheating and seal failure over time. This application addresses this by placing the connecting hole 125 in the third chamber, allowing for rapid pressure release and ensuring a balance of oil level and pressure between the first and third chambers.

[0069] It is worth mentioning that, see Figure 1 To prevent the second bearing 133, which is a thrust bearing, from slipping and being damaged when the load fluctuates, a number of preload springs 126 are circumferentially arranged at the bearing position of the second bearing 133 and the second chamber. The elastic direction of the preload springs 126 is consistent with the axial direction of the second bearing 133, and can provide elastic force to the second bearing 133 near the second end cover 122, thereby maintaining a reasonable preload force of the second bearing 133 at all times.

[0070] Additionally, see Figure 1 and Figure 10A lubrication circulation system 3 may be provided between the connecting hole 125 and the lubricating oil inlet 124 to process the lubricating oil output from the housing 123 and then return it to the housing 123, thereby realizing the recycling of the lubricating oil. The lubrication circulation system 3 may include an oil tank 31, a filter 32, an oil pump 33, a cooler 34, and a distributor 35 arranged in sequence. The oil pump 33 can draw out the lubricating oil from the bearing housing 1 and temporarily store it in the oil tank 31. The lubricating oil in the oil tank 31 can be filtered and cooled sequentially by the filter 32 and the cooler 34, and then evenly sent into the bearing housing 1 by the distributor 35, so that the processed lubricating oil can be used again to lubricate the first bearing 131, the second bearing 133, and the third bearing 135.

[0071] See Figure 1 The housing 123 is also equipped with a temperature sensor 36, which is located at the connecting hole 125 and is connected to the cooler 34 via the controller 38 to control the oil temperature of the lubricating oil in the bearing housing 1. This allows the cooler 34 to cool the lubricating oil only when the oil temperature is too high, effectively saving the water consumption of the cooler 34 and making it energy-saving and environmentally friendly.

[0072] See Figure 2 and Figure 4 In one embodiment, the bearing housing 1 further includes an oil level regulator 15, which is disposed on the connecting hole 125 and connected to the oil outlet pipe.

[0073] Specifically, see Figure 1 and Figure 4 The housing 12 is provided with a connecting hole 125 that communicates with the third chamber. The lubricating oil in the first and second chambers is pumped to the third chamber by the second bearing 133 and can be output through the connecting hole 125. The oil level regulator 15 is connected between the connecting hole 125 and the oil outlet pipe to control the output of lubricating oil, thereby realizing the regulation of the amount of lubricating oil in the housing 12.

[0074] See Figure 4 and Figure 5More specifically, the oil level regulator 15 includes a housing 151, an overflow pipe 152, a sealing cap 153, and an adjusting handle 154. The housing 151 has an oil inlet channel 155, an oil outlet channel 156, and an oil storage chamber 157 that are connected. The housing 151 is connected to the connecting hole 125 through the oil inlet channel 155 and to the oil outlet pipe through the oil outlet channel 156. The lubricating oil in the housing 12 can enter the oil storage chamber 157 through the oil inlet channel 155 and be output through the oil outlet channel 156. The top of the overflow pipe 152 is located in the oil storage chamber 157, and the bottom of the overflow pipe 152 is screwed into the oil outlet channel 156. By controlling the position of the top of the overflow pipe 152, the amount of lubricating oil in the oil storage chamber 157 can be adjusted, thereby realizing the adjustment of the amount of lubricating oil in the housing 12. The sealing cover 153 is detachably mounted on the top of the housing 151. The adjusting handle 154 passes through the sealing cover 153 and can rotate freely at the axis of the sealing cover 153. The bottom of the adjusting handle 154 is coaxial with and floatingly connected to the overflow pipe 152. When the oil level needs to be adjusted, the overflow pipe 152 can be rotated by rotating the adjusting handle 154 without opening the sealing cover 153. By changing the height of the upper opening of the overflow pipe 152, the oil level in the tank 123 is changed, ensuring online adjustment without oil splashing.

[0075] See Figure 2 In addition, the housing 12 is equipped with an oil level sight glass 16 and an oil drain valve 17. The oil level sight glass 16 allows the operator to visually observe the oil level and assists in precise adjustment. The oil drain valve 17 can be opened when the lubricating oil needs to be replaced to completely drain any residual waste oil from the housing 12.

[0076] See Figure 1 , Figure 4 and Figure 8 It is worth mentioning that when a lubrication circulation system 3 is provided between the connecting hole 125 and the lubricating oil inlet 124, the lubrication circulation system 3 is connected to the connecting hole 125 through the oil outlet pipe and the oil level regulator 15. The lubricating oil output from the housing 123 is sequentially input into the lubrication circulation system 3 through the connecting hole 125, the oil level regulator 15, and the oil outlet pipe. This ensures that the lubrication circulation system 3 does not affect the oil level regulator 15's adjustment effect on the oil level height in the housing 123.

[0077] See Figure 6 and Figure 7 In one embodiment, the main shaft 11 is also provided with an overload protection component 18 so that after it is connected to the power unit 21 and the rotor unit 22 at its two axial ends respectively, the overload protection device can separate from the rotor unit 22 when the rotor unit 22 is stuck, so as to cut off the power transmission.

[0078] Specifically, the overload protection device is arranged around the axis of the main shaft 11 and partially housed inside the main shaft 11. The overload protection device includes a safety pin 181 and a torsion-limiting spring 182, with both ends of the torsion-limiting spring 182 connected to the main shaft 11 and the safety pin 181, respectively. The head of the safety pin 181 is hemispherical, and after installation, its head can be accommodated in the tapered hole 26 of the rotor unit 22, so that it engages with the tapered hole 26 under the action of the torsion-limiting spring 182, thereby reliably transmitting torque. When the torque of the main shaft 11 abnormally exceeds the set value, the safety pin 181 can overcome the elastic force of the torsion-limiting spring 182, and its head can slide out of the tapered hole 26, causing the main shaft 11 to twist and disengage from the rotor unit 22, thereby producing a protective effect. In addition, due to the elasticity of the torsion limiting spring 182, the overload protection device can also buffer the main shaft 11 and the rotor unit 22, so that it can not only prevent the main shaft 11 from breaking by cutting off the power transmission when the load is too large, but also soften the power from the power unit 21, making the power transmission smoother.

[0079] For example, when the torque of the spindle 11 is less than the set value, the head of the safety pin 181 is located in and engages with the tapered hole 26, and the spindle 11 and rotor unit 22 rotate synchronously to transmit power. When the torque increases, the head of the safety pin 181 slides in the tapered hole 26, and there is a slight relative rotation between the spindle 11 and rotor unit 22, but power can still be transmitted normally. When the torque exceeds the design value, the head of the safety pin 181 disengages from the tapered hole 26, the power between the spindle 11 and rotor unit 22 is disconnected, and then relative rotation occurs between the spindle 11 and rotor unit 22 to prevent overload of the drive shaft. When the torque between the spindle 11 and rotor unit 22 returns to within the set value, the head of the safety pin 181 can once again be located in and engage with the tapered hole 26, so that the spindle 11 and rotor unit 22 resume synchronous rotation.

[0080] In addition, since the safety pin 181 of the overload protection device is mainly pulled by the torsion spring 182, the maximum transmitted torque can be set by setting the elastic value of the torsion spring 182.

[0081] See Figures 8-9 The embodiments of this application also provide a power device 2, including a power unit 21, a rotor unit 22, and the aforementioned bearing housing 1. The axial ends of the main shaft 11 are respectively connected to the power unit 21 and the rotor unit 22. The power unit 21 can drive the main shaft 11 to rotate, thereby driving the rotor unit 22 to rotate.

[0082] See Figure 1 and Figure 9Specifically, the main shaft 11 has a first fixed end 114 and a second fixed end 115 at its two axial ends. The power unit 21 is coaxially connected to the first fixed end 114, and the rotor unit 22 is coaxially connected to the second fixed end 115. More specifically, a connecting rod 23 coaxially connected to the main shaft 11 is provided. One end of the connecting rod 23 has a locking block that abuts against the first fixed end 114, and the other end of the rod is inserted into the rotor unit 22.

[0083] To further enhance connectivity, please refer to Figures 8-9 The power equipment 2 also includes a housing 24 for accommodating the rotor unit 22. The housing 24 has a connecting section 27 between it and the bearing housing 1. The connecting section 27 is sleeved on the outside of the rotor unit 22, and both ends of the connecting section 27 are connected to the flanges of the housing 24 and the bearing housing 1, respectively.

[0084] In addition, the power unit 2 also includes a base 25, a housing 24, a bearing housing 1, and a lubrication circulation system 3, all of which are mounted on the base 25 to support and connect the rotor unit 22, the bearing housing 1, and the lubrication circulation system 3. The lubrication circulation system 3 is located between the bearing housing 1 and the base 25, which facilitates the collection and circulation of lubricating oil output from the lower area of ​​the bearing housing 1.

[0085] The power equipment 2 of this application, by utilizing the bearing housing 1 which can reduce assembly difficulty and ensure assembly accuracy, can effectively reduce the assembly difficulty of the power equipment 2 and ensure the assembly accuracy of the power equipment 2.

[0086] See Figures 6-7 In one embodiment, an overload protection component 18 is provided between the main shaft 11 and the rotor unit 22. The overload protection component 18 is configured to separate from the rotor unit 22 when the torque on the main shaft 11 is greater than a preset torque, so as to cut off the power transmission.

[0087] Specifically, around the axis of the main shaft 11, the second fixed end 115 of the main shaft 11 is provided with a plurality of receiving grooves 116, and each receiving groove 116 has an overload protection device. The rotor unit 22 has a plurality of tapered holes 26 on its side facing the second fixed end 115, and the plurality of tapered holes 26 correspond to the receiving grooves 116 respectively. One end of the overload protection device is disposed in the receiving groove 116, and the other end of the overload protection device is inserted into the tapered hole 26.

[0088] More specifically, the overload protection device includes a safety pin 181 and a torsion-limiting spring 182. The torsion-limiting spring 182 is located within the receiving groove 116, and its two ends in the elastic direction are connected to the main shaft 11 and the safety pin 181, respectively. The head of the safety pin 181 facing away from the torsion-limiting spring 182 is hemispherical and can be accommodated within the tapered hole 26, so that it engages with the tapered hole 26 under the action of the torsion-limiting spring 182, thereby reliably transmitting torque. When the rotor unit 22 jams, the torque of the main shaft 11 is abnormally greater than the set value. The safety pin 181 can overcome the elastic force of the torsion-limiting spring 182, and its head can slide out of the tapered hole 26, causing the main shaft 11 to twist and disengage from the rotor unit 22, thereby producing a protective effect. In addition, the maximum transmitted torque can be set by setting the elastic value of the torsion-limiting spring 182. In addition, due to the elasticity of the torsion limiting spring 182, the overload protection device can also buffer the main shaft 11 and the rotor unit 22, so that it can not only prevent the main shaft 11 from breaking by cutting off the power transmission when the load is too large, but also soften the power from the power unit 21, making the power transmission smoother.

[0089] For example, when the torque of the spindle 11 is less than the set value, the head of the safety pin 181 is located in and engages with the tapered hole 26, and the spindle 11 and rotor unit 22 rotate synchronously to transmit power. When the torque increases, the head of the safety pin 181 slides in the tapered hole 26, and there is a slight relative rotation between the spindle 11 and rotor unit 22, but power can still be transmitted normally. When the torque exceeds the design value, the head of the safety pin 181 disengages from the tapered hole 26, the power between the spindle 11 and rotor unit 22 is disconnected, and then relative rotation occurs between the spindle 11 and rotor unit 22 to prevent overload of the drive shaft. When the torque between the spindle 11 and rotor unit 22 returns to within the set value, the head of the safety pin 181 can once again be located in and engage with the tapered hole 26, so that the spindle 11 and rotor unit 22 resume synchronous rotation.

[0090] In addition, since the safety pin 181 of the overload protection device is mainly pulled by the torsion spring 182, the maximum transmitted torque can be set by setting the elastic value of the torsion spring 182.

[0091] See Figure 10This application also provides a circulating lubrication system 3, including a circulation mechanism and a bearing housing 1 as described in any of the above embodiments. The circulation mechanism includes an oil tank 31, a filter 32, an oil pump 33, a cooler 34, and a distributor 35, which are sequentially arranged and communicate with the bearing housing 1. The oil pump 33 can draw lubricating oil from the bearing housing 1 and temporarily store it in the oil tank 31. The lubricating oil in the oil tank 31 can be filtered and cooled sequentially by the filter 32 and the cooler 34, and then evenly fed into the bearing housing 1 by the distributor 35, so that the treated lubricating oil can be used again to lubricate the first bearing 131, the second bearing 133, and the third bearing 135. By processing the lubricating oil output from the housing 123 and then returning it to the housing 123, the lubricating oil can be recycled.

[0092] See Figure 1 , Figure 8 and Figure 10 Specifically, the oil tank 31 is located below the bearing housing 1 and is connected to the third chamber through the connecting hole 125. The lubricating oil in the bearing housing 1 flows out through the connecting hole 125 and falls into the oil tank 31 for temporary storage due to gravity. A filter 32 is connected between the oil tank 31 and the oil pump 33, and the oil pump 33 is connected between the filter 32 and the cooler 34. This allows the oil pump 33 to first filter the lubricating oil through the filter 32 after drawing it from the oil tank 31 to remove impurities before sending it to the cooler 34 for cooling.

[0093] The bearing housing 1 is equipped with a temperature sensor 36, and the temperature sensor 36 is connected to the cooler 34 via a controller 38 so that the cooler 34 can cool the lubricating oil when the oil temperature is too high.

[0094] Specifically, the circulating lubrication system 3 also includes a temperature sensor 36, which is located at the connecting hole 125 and electrically connected to the cooler 34 through the controller 38 to control the oil temperature of the lubricating oil in the bearing housing 1. This allows the cooler 34 to cool the lubricating oil only when the oil temperature is too high, effectively saving the water consumption of the cooler 34 and making it energy-saving and environmentally friendly.

[0095] More specifically, the cooler 34 has a coolant circulation channel with a coolant inlet and a coolant outlet. Coolant is introduced into the coolant circulation channel through the coolant inlet and discharged through the coolant outlet, so that the circulating coolant can cool the lubricating oil introduced into the cooler 34.

[0096] In addition, the circulating lubrication system 3 also includes a wastewater collection point 38, and the coolant outlet is located at the wastewater collection point 38. The output coolant can be collected through the wastewater collection point 38 for treatment.

[0097] When in use, the circulating lubrication system 3 of this application can extract the lubricating oil from the bearing housing 1 through the oil pump 33, and send the lubricating oil back into the bearing housing 1 after being filtered and cooled by the filter 32 and the cooler 34, thereby achieving oil temperature control of the lubricating oil in the bearing housing 1. Since the cooler 34 only cools the lubricating oil when the oil temperature is too high, it can effectively save the water consumption of the cooler 34, which is energy-saving and environmentally friendly.

[0098] See Figure 1 , Figure 2 and Figure 10 In one embodiment, the oil tank 31 is connected to the connecting hole 125 via the oil level regulator 15, and the distributor 35 is connected to the first chamber, the second chamber, and the third chamber. Lubricating oil in the bearing housing 1 can flow into the oil tank 31 for temporary storage via the oil level regulator 15. Lubricating oil drawn from the oil tank 31 can be filtered and cooled by the filter 32 and the cooler 34, and then evenly distributed into the bearing housing 1 via the distributor 35, allowing the treated lubricating oil to lubricate the first bearing 131, the second bearing 133, and the third bearing 135 again. By processing the lubricating oil output from the housing 123 and then returning it to the housing 123, the lubricating oil is recycled.

[0099] Specifically, the housing 12 is provided with a connecting hole 125 that communicates with the third chamber. The lubricating oil in the first and second chambers is pumped to the third chamber by the second bearing 133 and can be output through the connecting hole 125. The oil level regulator 15 is connected between the connecting hole 125 and the oil outlet pipe. The lubricating oil output from the housing 123 is sequentially input into the lubrication circulation system 3 through the connecting hole 125, the oil level regulator 15 and the oil outlet pipe, ensuring that the lubrication circulation system 3 does not affect the adjustment effect of the oil level regulator 15 on the oil level height in the housing 123.

[0100] A distributor 35 is mounted on the bearing housing 1 and has three distribution sections. The three distribution sections are respectively mounted on three lubricating oil inlets 124 so as to communicate with the first chamber, the second chamber and the third chamber respectively, so that lubricating oil can enter the first chamber, the second chamber and the third chamber through the distributor 35 to force lubricate the first bearing 131, the second bearing 133 and the third bearing 135 respectively.

[0101] See Figure 4 and Figure 5More specifically, the oil level regulator 15 includes a housing 151, an overflow pipe 152, a sealing cover 153, and an adjusting handle 154. The housing 151 has an oil inlet channel 155, an oil outlet channel 156, and an oil storage chamber 157 that are connected to each other. The housing 151 is connected to the connecting hole 125 through the oil inlet channel 155 and to the oil outlet pipe through the oil outlet channel 156. The lubricating oil in the housing 12 can enter the oil storage chamber 157 through the oil inlet channel 155 and be output through the oil outlet channel 156.

[0102] The top of the overflow pipe 152 is located inside the oil storage chamber 157, and the bottom of the overflow pipe 152 is screwed into the oil outlet channel 156. By controlling the position of the top of the overflow pipe 152, the amount of lubricating oil in the oil storage chamber 157 can be adjusted, thereby adjusting the amount of lubricating oil in the housing 12. The sealing cover 153 is detachably mounted on the top of the housing 151. The adjusting handle 154 passes through the sealing cover 153 and can rotate freely at the axis of the sealing cover 153. The bottom of the adjusting handle 154 is coaxial with and floatingly connected to the overflow pipe 152. When the oil level needs to be adjusted, the overflow pipe 152 can be rotated by rotating the adjusting handle 154 without opening the sealing cover 153. By changing the height of the upper opening of the overflow pipe 152, the oil level in the housing 123 can be changed, ensuring online adjustment without oil splashing.

[0103] The technical features of the above embodiments can be combined in any way. For the sake of brevity, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0104] The embodiments described above are merely illustrative of several implementation methods of this application, and while the descriptions are relatively specific and detailed, they should not be construed as limiting the scope of the patent application. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this application, and these all fall within the protection scope of this application. Therefore, the protection scope of this patent application should be determined by the appended claims.

Claims

1. A bearing housing, characterized in that, include: The enclosure includes a housing and at least one end cap, the end cap being detachably connected to the housing; The main shaft passes through the housing and the end cover, and a first abutting part is protruding on the outer circumferential surface of the main shaft; the end cover includes a first end cover and a second end cover, and the first end cover and the second end cover are respectively connected to both sides of the housing along the axial direction of the main shaft; A bearing assembly is sleeved on the main shaft and located inside the housing. Along the axial direction of the main shaft, the bearing assembly has a first end and a second end. The first end abuts against the side of the housing facing the end cover, and the second end abuts against the end cover and the first abutting part. The outer circumferential surface of the main shaft is also provided with a second abutting part. The second abutting part and the first abutting part are spaced apart along the axial direction of the main shaft. The bearing assembly includes a first bearing, a first positioning sleeve, a second bearing, a second positioning sleeve and a third bearing arranged in sequence and abutting each other. The third bearing abuts against the first abutting part, and the side of the first positioning sleeve facing the first abutting part abuts against the second abutting part. The first bearing and the third bearing respectively abut against the two end caps; the first positioning sleeve is movably sleeved on the main shaft and sealed to the main shaft, and there is a sealed cavity between the first positioning sleeve and the main shaft, and the main shaft is provided with a hydraulic channel connecting the outside and the cavity; When the first bearing needs to be repaired and disassembled, high-pressure oil can be introduced into the hydraulic channel through the inlet of the hydraulic channel and into the cavity through the outlet of the hydraulic channel. The introduced high-pressure oil can increase the space of the cavity, thereby allowing the first positioning sleeve to move axially on the main shaft, so as to push the first bearing to move on the main shaft, so that the first bearing can move away from the second end cover, thereby disassembling the first bearing without damage and efficiently. The installation of the bearing housing includes: connecting the first end cap to the housing body; fitting the bearing assembly onto the main shaft via the first fixed end of the main shaft; then sequentially passing the first fixed end of the main shaft through the housing body and the first end cap, allowing the bearing assembly to enter the housing body under the traction of the main shaft; during the traction process, the second end of the bearing assembly gradually approaches and abuts against the first abutting part; the first end of the bearing assembly gradually approaches and abuts against the first end cap; when the main shaft can no longer move due to the bearing assembly simultaneously abutting against the first end cap and the first abutting part, the second end cap is then connected to the housing body to complete the assembly.

2. The bearing housing according to claim 1, characterized in that, A third abutment portion is also provided on the outer peripheral surface of the main shaft. The third abutment portion and the second abutment portion are spaced apart along the axial direction of the main shaft. A recessed portion is provided on the inner peripheral surface of the first positioning sleeve. The third abutment portion is located in the recessed portion. The outer peripheral wall of the main shaft, the third abutment portion and the recessed portion cooperate to form the cavity.

3. The bearing housing according to claim 1, characterized in that, The housing has a first chamber, a second chamber, and a third chamber. The first bearing, the second bearing, and the third bearing are located in the first chamber, the second chamber, and the third chamber respectively. The second bearing is a thrust bearing, and the gas in the first chamber can be unidirectionally introduced into the third chamber through the second bearing. The housing is provided with a communication hole connecting the outside to the third chamber.

4. The bearing housing according to claim 3, characterized in that, The bearing housing also includes an oil level regulator, which is disposed on the connecting hole and connected to the oil outlet pipe.

5. A power equipment, characterized in that, It includes a power unit, a rotor unit, and a bearing housing as described in any one of claims 1-4, wherein the power unit is connected to one axial end of the main shaft of the bearing housing, and the rotor unit is connected to the other axial end of the main shaft.

6. The power equipment according to claim 5, characterized in that, An overload protection component is provided between the main shaft and the rotor unit. The overload protection component is configured to separate from the rotor unit when the torque on the main shaft exceeds a preset torque, thereby cutting off power transmission.

7. A circulating lubrication system, characterized in that, The system includes a circulation mechanism and a bearing housing as described in any one of claims 1-4. The circulation mechanism includes an oil tank, a filter, an oil pump, a cooler, and a distributor arranged in sequence and communicating with the bearing housing. A temperature sensor is provided inside the bearing housing. The circulating lubrication system also includes a controller, which is signal-connected to the temperature sensor and the cooler.

8. The circulating lubrication system according to claim 7, characterized in that, The bearing housing includes an oil level regulator, the oil tank is connected to the bearing housing through the oil level regulator and a communication hole, and the distributor is connected to the first chamber, the second chamber and the third chamber of the bearing housing.

Images