Bearing box with cooling function

Abstract

The invention belongs to the technical field of bearing boxes, and particularly discloses a bearing box with a cooling function, which comprises a bearing box body, a large-hole side cover, a large-hole oil baffle disc, a small-hole side cover and a small-hole oil baffle disc. The oil slinger can rotate along with the main shaft and slinger lubricating oil in the first lower oil pool to the first upper oil pool, the lubricating oil in the first upper oil pool can flow into the second upper oil pool through a gap between the bearing rolling bodies, and the oil flowing hole is used for guiding the lubricating oil in the second upper oil pool out to the second lower oil pool. And a connecting channel is arranged between the first lower oil pool and the second lower oil pool. The upper cooling channel and the lower cooling channel can wrap the periphery of the bearing. The cooling water system and the oil way cooling system are arranged, and the oil way cooling system or the water way cooling system and the oil way cooling system can be started at the same time according to the environment temperature.

Description

Technical Field

[0001] The invention belongs to the technical field of bearing boxes, and in particular relates to a bearing box with a cooling function. Background Art

[0002] The bearing box is a part that supports and lubricates the bearing. It is usually made of cast iron and cast steel and is widely used in mechanical equipment in various industries. Its main function is to support and protect the rotating shaft and its bearings to ensure the smooth operation of the equipment. The main function of the bearing is to support the mechanical rotating body and reduce the friction during the rotational motion. The bearing needs to be continuously lubricated and cooled during operation. At present, the oil is generally thrown into the inner ring of the bearing through an oil slinger to lubricate the bearing balls, and the oil is used to take away some of the heat for cooling. The bearing relies solely on the oil to absorb heat for cooling, but the oil itself does not have good heat dissipation measures, resulting in low cooling efficiency. Summary of the invention

[0003] The object of the present invention is to provide a bearing box with a cooling function to solve the problem of low heat dissipation efficiency of the existing bearing box.

[0004] In order to achieve the above-mentioned purpose, the technical scheme of the present invention is as follows: a bearing box with cooling function, comprising a bearing box body, a large-hole side cover, a large-hole oil baffle plate, a small-hole side cover and a small-hole oil baffle plate; the main shaft is stepped, the large-hole oil baffle plate is fixed to the large-diameter end of the main shaft, and the small-hole oil baffle plate is fixed to the small-diameter end of the main shaft; first through holes are provided on both sides of the bearing box body, and second through holes are provided on both sides of the large-hole side cover and the small-hole side cover, the first through holes are used to install the large-hole side cover and the small-hole side cover, and the second through holes are used to install the large-hole side cover and the small-hole side cover. The large-hole oil baffle plate and the small-hole oil baffle plate are installed; the large-hole side cover and the small-hole side cover are respectively installed on both sides of the bearing box body and are respectively connected to the bearing box body, the interior of the large-hole side cover and the small-hole side cover extend into the interior of the bearing box body and fix the bearing on the main shaft from both sides; the large-hole side cover is located at the outer periphery of the large-hole oil baffle plate, and the small-hole side cover is located at the outer periphery of the small-hole oil baffle plate; the two sides of the bearing are respectively formed with the large-hole side cover and the small-hole side cover to form a first upper oil pool and a second upper oil pool, and the lower side of the bearing box body is provided with a first A lower oil pool and a second lower oil pool, the first lower oil pool is located below the first upper oil pool, and the second lower oil pool is located below the second upper oil pool; a groove is provided on the large-hole oil baffle plate, an oil slinger ring is installed in the groove, and the upper and lower sides of the large-hole side cover are provided with through grooves for passing the oil slinger ring, and the bottom of the oil slinger ring is located in the first lower oil pool; the oil slinger ring can rotate with the main shaft and sling the lubricating oil in the first lower oil pool to the first upper oil pool; an oil flow hole is provided on the small-hole oil baffle plate, and the oil flow hole is used to guide the lubricating oil in the second upper oil pool to the second lower oil pool; a connecting channel is provided between the first lower oil pool and the second lower oil pool; the lubricating oil in the first upper oil pool can flow into the second upper oil pool through the gap between the rolling elements of the bearing; an upper cooling channel and a lower cooling channel are respectively provided on the upper and lower sides of the bearing box body, one side of the upper cooling channel and the lower cooling channel are connected, and the other side is respectively connected to the outlet pipe and the inlet pipe; the upper cooling channel and the lower cooling channel can wrap the outer periphery of the bearing.

[0005] Furthermore, the bearing box body, the large-hole side cover and the small-hole side cover are all upper and lower split structures, and the upper and lower parts are fixed by bolts.

[0006] Furthermore, a labyrinth oil return groove is provided inside the large-hole side cover and the small-hole side cover on a side away from the bearing, and an oil-slinging groove corresponding to the labyrinth oil return groove is provided on the large-hole oil baffle plate and the small-hole oil baffle plate, and the labyrinth oil return groove and the oil-slinging groove can prevent the lubricating oil from flowing out of the main shaft under the combined action; an oil return hole is provided on the lower side of the large-hole side cover and the small-hole side cover, and the upper side of the oil return hole is connected with the labyrinth oil return groove, and the lower side of the oil return hole is connected with the first upper oil pool or the second upper oil pool, respectively.

[0007] Furthermore, a positive oil-blocking ear protruding outward is provided on the inner side of the large-hole side cover and the small-hole side cover close to the bearing; the large-hole oil-blocking plate and the small-hole oil-blocking plate are respectively provided with a reverse oil-blocking ear corresponding to the positive oil-blocking ear, and an opening is provided on the side of the reverse oil-blocking ear close to the positive oil-blocking ear, and the positive oil-blocking ear is located inside the reverse oil-blocking ear; the cooperation of the positive oil-blocking ear and the reverse oil-blocking ear can reduce the flow of lubricating oil into the axial hole of the large-hole side cover and the small-hole side cover.

[0008] Furthermore, a positioning pin is provided in the first lower oil pool. The positioning pin is located in the oil slinger ring and contacts the lower side of the oil slinger ring. The positioning pin can prevent the oil slinger ring from jumping.

[0009] Furthermore, a heat dissipation fin is provided on the outer side of the bearing box body.

[0010] Furthermore, cooling fins are provided on the side of the large-hole side cover and the small-hole side cover away from the bearing.

[0011] The working principle of this technical solution is:

[0012] Oil circuit cooling system: The rotation of the main shaft drives the large-hole oil baffle plate and the small-hole oil baffle plate fixed on the main shaft to rotate at the same time, and the oil slinger installed in the groove of the large-hole oil baffle plate also rotates accordingly. As the oil slinger ring rotates, the lubricating oil in the first lower oil pool of the lower bearing housing will be brought into the large-hole oil baffle plate and flow into the first upper oil pool composed of the large-hole side cover and the bearing. Since the large-hole side cover has no oil flow hole, as the oil slinger ring continuously brings in the lubricating oil, the oil level in the first upper oil pool will rise. After reaching a certain height, the lubricating oil will flow into the second upper oil pool composed of the small-hole side cover and the bearing through the gap between the rolling elements of the bearing, and at the same time take away the temperature of the bearing during operation to ensure the normal operation of the bearing. As time goes by, the oil level in the second upper oil pool will also slowly rise. Since the small-hole side cover is provided with an oil flow hole, when the oil level is higher than the oil flow hole, the lubricating oil will flow into the second lower oil pool through the oil flow hole. Since a connecting channel is provided between the first lower oil pool and the second lower oil pool, as the oil slinger rotates, the lubricating oil in the first lower oil pool is taken away and flows into the second lower oil pool through the oil flow hole. There will be a height difference between the lubricating oil levels in the first lower oil pool and the second lower oil pool, so that the lubricating oil in the second lower oil pool will flow into the first lower oil pool through the connecting channel. At this point, the lubricating oil completes a cycle in the oil circuit system. When the lubricating oil flows from the second lower oil pool into the first lower oil pool, the temperature of the lubricating oil will be dissipated from the bearing to the air through the heat dissipation fins, thereby ensuring that the operating temperature of the bearing is within the normal range.

[0013] Water cooling system: external cooling water is connected to the inlet pipe, and the cooling water enters the lower cooling channel, and then enters the upper cooling channel, and finally is discharged from the bearing box body through the upper cooling channel. When the cooling water passes through the lower cooling channel, it will take away the temperature of the lubricating oil. At the same time, since the upper cooling channel and the lower cooling channel wrap the outer ring of the bearing for a circle, they will also carry the temperature generated during the operation of the bearing, thereby ensuring the operating temperature of the bearing.

[0014] When the working environment is in a low-temperature area, the cooling water may freeze. In this case, the cooling water system can be turned off and the cooling water inside the bearing box body can be drained. Only the oil cooling system can be used to cool and lubricate the bearing. When the working environment is in a high-temperature area, since the oil cooling system cannot meet the working temperature of the bearing, the water cooling system can be turned on and the cooling water can be used to take away the excess temperature to meet the working temperature of the bearing. In the two systems, the oil cooling system can be used alone, the oil cooling system and the water cooling system can be used together, and the water cooling system cannot be used alone.

[0015] The beneficial effects of this technical solution are:

[0016] ① This technical solution sets up a cooling water system and an oil circuit cooling system, and can choose to start the oil circuit cooling system according to the ambient temperature, or start the oil circuit cooling system and the water circuit cooling system at the same time.

[0017] ② The large-hole oil baffle plate has a groove for installing an oil slinger ring. The large-hole side cover is provided with a through groove for passing the oil slinger ring. The oil slinger ring can connect the first upper oil pool and the first lower oil pool through this groove, ensuring that the oil slinger ring can effectively rotate with the main shaft while ensuring the smooth flow of the lubricating oil system. The small-hole side cover is provided with an oil flow hole, which ensures the oil level height of the second upper oil pool and can flow the high-temperature lubricating oil in the second upper oil pool into the second lower oil pool to ensure the flow and cooling of the lubricating oil. A positioning pin is installed in the first lower oil pool to ensure that the oil slinger ring can rotate according to the groove on the large-hole oil baffle plate during operation without jumping out of the groove. The connecting channel ensures that the first lower oil pool and the second lower oil pool become a whole and ensure the circulation operation of the oil system.

[0018] ③ The interaction between the reverse oil-blocking ear and the positive oil-blocking ear ensures that the lubricating oil does not flow into the spindle hole, and the interaction between the oil-swinging groove and the oil-returning groove ensures that the lubricating oil does not flow out of the spindle.

[0019] ④The heat dissipation fins and cooling fins can further cool the bearings and lubricating oil. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is an internal cross-sectional view of a bearing box with cooling function according to the present invention;

[0021] Figure 2 A side view of a bearing box with cooling function according to the present invention;

[0022] Figure 3 for Figure 2 A cross-sectional view of

[0023] Figure 4 It is a cross-sectional view of the interior of the bearing housing;

[0024] Figure 5 is a side view of the bearing housing;

[0025] Figure 6 is a cross-sectional view of a large hole side cover;

[0026] Figure 7 is a cross-sectional view of the small hole side cover;

[0027] Figure 8 It is a cross-sectional view of a large-hole oil baffle plate;

[0028] Fig. 9 It is a cross-sectional view of the small hole oil baffle plate;

[0029] Fig.10 It is a cooling schematic diagram of the oil circuit cooling system in the bearing box body;

[0030] Fig.11 It is a cooling schematic diagram of the water cooling system in the bearing box body. DETAILED DESCRIPTION

[0031] The following is further described in detail through specific implementation methods:

[0032] The figure marks in the drawings of the specification include: bearing box body 1, main shaft 2, bearing 3, large hole side cover 4, large hole oil baffle plate 5, small hole side cover 6, small hole oil baffle plate 7, first upper oil pool 8, second upper oil pool 9, first lower oil pool 10, second lower oil pool 11, positioning pin 12, oil slinger 13, heat dissipation fins 14, cooling fins 15, upper bearing box body 16, lower bearing box body 17, outlet pipe 18, inlet pipe 19, upper cooling channel 20, lower cooling channel 21, cooling elbow 22, connecting channel 23, labyrinth oil return groove 24, through groove 25, oil return hole 26, positive oil baffle ear 27, oil flow hole 28, groove 29, reverse oil baffle ear 30, oil slinger groove 31.

[0033] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0034] The embodiment is basically as shown in the attached Figure 1-11As shown: A bearing box with cooling function, such as Figure 1-3 As shown, it includes a bearing box body 1, a large-hole side cover 4, a large-hole oil baffle plate 5, a small-hole side cover 6 and a small-hole oil baffle plate 7; the bearing box body 1, the large-hole side cover 4 and the small-hole side cover 6 are all upper and lower split structures, and the upper and lower parts are fixed by bolts. Specifically, the bearing box body 1 includes an upper bearing box body 16 and a lower bearing box body 17, and the upper bearing box body 16 and the lower bearing box body 17 are connected by bolts. The large-hole side cover 4 and the small-hole side cover 6 are both composed of two semicircular side covers that are bolted and positioned pins to form a full-circle side cover. A first through hole is provided on both sides of the bearing box body 1, and a second through hole is provided on both sides of the large-hole side cover 4 and the small-hole side cover 6. The first through hole is used to install the large-hole side cover 4 and the small-hole side cover 6, and the second through hole is used to install the large-hole oil baffle plate 5 and the small-hole oil baffle plate 7.

[0035] The main shaft 2 is stepped, and the large-hole oil baffle plate 5 is fixed to the large-diameter end of the main shaft 2 by screws, and the small-hole oil baffle plate 7 is fixed to the small-diameter end of the main shaft 2 by screws. The bearing 3 is installed at the small-diameter end of the main shaft 2 and the end thereof abuts against the end of the large-diameter end. The large-hole side cover 4 and the small-hole side cover 6 are respectively installed on both sides of the bearing box body 1 and are respectively connected to the bearing box body 1. The interior of the large-hole side cover 4 and the small-hole side cover 6 extend into the interior of the bearing box body 1 and fix the bearing 3 on the main shaft 2 from both sides. The bearing 3 and the large-hole side cover 4, and the bearing 3 and the small-hole side cover 6 are positioned by positioning stoppers. The large-hole side cover 4 is located on the outer periphery of the large-hole oil baffle plate 5, and the small-hole side cover 6 is located on the outer periphery of the small-hole oil baffle plate 7. A first upper oil pool 8 and a second upper oil pool 9 are formed between the large-hole side cover 4 and the small-hole side cover 6 on both sides of the bearing 3 respectively. A first lower oil pool 10 and a second lower oil pool 11 are provided on the lower side of the bearing box body 1. The first lower oil pool 10 is located below the first upper oil pool 8, and the second lower oil pool 11 is located below the second upper oil pool 9.

[0036] The large hole oil baffle plate 5 is provided with a groove 29 (such as Figure 8 As shown), an oil slinger 13 is installed in the groove 29, and a through groove 25 (as shown) for passing the oil slinger 13 is provided on the upper and lower sides of the large hole side cover 4. Figure 6 As shown in the figure, the bottom of the oil slinger 13 is located in the first lower oil pool 10. The oil slinger 13 can rotate with the main shaft 2 and sling the lubricating oil in the first lower oil pool 10 to the first upper oil pool 8. A positioning pin 12 is provided in the first lower oil pool 10. The positioning pin 12 is located in the oil slinger 13 and contacts the lower side of the oil slinger 13. The positioning pin 12 can prevent the oil slinger 13 from jumping. Specifically, the positioning pin 12 is threadedly connected to the bearing housing 1. The small hole oil baffle plate 7 is provided with an oil flow hole 28 (as shown in the figure). Figure 7 As shown), the oil flow hole 28 is used to guide the lubricating oil in the second upper oil pool 9 to the second lower oil pool 11; a connecting channel 23 (as shown) is provided between the first lower oil pool 10 and the second lower oil pool 11. Figure 3The lubricating oil in the first upper oil pool 8 can flow into the second upper oil pool 9 through the gap between the rolling elements of the bearing 3.

[0037] like Figure 6-9 As shown, the inside of the large-hole side cover 4 and the small-hole side cover 6 on the side away from the bearing 3 is provided with a labyrinth oil return groove 24, and the large-hole oil baffle plate 5 and the small-hole oil baffle plate 7 are provided with an oil-slinging groove 31 corresponding to the labyrinth oil return groove 24. The labyrinth oil return groove 24 and the oil-slinging groove 31 can prevent the lubricating oil from flowing out of the main shaft 2 under the joint action. The lower side of the large-hole side cover 4 and the small-hole side cover 6 is provided with an oil return hole 26, the upper side of the oil return hole 26 is connected to the labyrinth oil return groove 24, and the lower side of the oil return hole 26 is connected to the first upper oil pool 8 or the second upper oil pool 9 respectively.

[0038] A positive oil-blocking ear 27 protruding outward is provided on the side of the large-hole side cover 4 and the small-hole side cover 6 near the bearing 3; the large-hole oil-blocking plate 5 and the small-hole oil-blocking plate 7 are respectively provided with a reverse oil-blocking ear 30 corresponding to the positive oil-blocking ear 27, and an opening is provided on the side of the reverse oil-blocking ear 30 near the positive oil-blocking ear 27, and the positive oil-blocking ear 27 is located inside the reverse oil-blocking ear 30; the cooperation between the positive oil-blocking ear 27 and the reverse oil-blocking ear 30 can prevent a large amount of lubricating oil from flowing into the axial holes of the large-hole side cover 4 and the small-hole side cover 6.

[0039] like Figure 3 As shown, an upper cooling channel 20 and a lower cooling channel 21 are respectively provided on the upper and lower sides of the bearing box body 1. One side of the upper cooling channel 20 and the lower cooling channel 21 are connected through a cooling elbow 22, and the other side is respectively connected to the outlet pipe 19 and the inlet pipe 18; the upper cooling channel 20 and the lower cooling channel 21 can wrap the outer periphery of the bearing 3.

[0040] The outer side of the bearing box body 1 is provided with a heat dissipation fin 14. The side of the large hole side cover and the small hole side cover away from the bearing 3 is provided with a cooling fin 15.

[0041] The specific implementation process is as follows:

[0042] like Fig.10As shown, the rotation of the main shaft 2 drives the large-hole oil baffle plate 5 and the small-hole oil baffle plate 7 fixed on the main shaft 2 to rotate simultaneously, and the oil slinger 13 installed in the groove 29 of the large-hole oil baffle plate 5 also rotates accordingly. As the oil slinger 13 rotates, the lubricating oil in the first lower oil pool 10 of the lower bearing housing 17 will be brought into the large-hole oil baffle plate 5, and flow into the first upper oil pool 8 composed of the large-hole side cover 4 and the bearing 3. Since the large-hole side cover 4 does not have an oil flow hole 28, as the oil slinger 13 continuously brings in the lubricating oil, the oil level of the first upper oil pool 8 rises. After reaching a certain height, the lubricating oil will flow into the second upper oil pool 9 composed of the small-hole side cover 6 and the bearing 3 through the gap between the rolling elements of the bearing 3, and at the same time take away the temperature of the bearing 3 during operation to ensure the normal operation of the bearing 3. As time goes by, the oil level in the second upper oil pool 9 will also slowly rise. Since the small hole side cover 6 is provided with an oil flow hole 28, when the oil level is higher than the oil flow hole 28, the lubricating oil will flow into the second lower oil pool 11 through the oil flow hole 28. Since a connecting channel 23 is provided between the first lower oil pool 10 and the second lower oil pool 11, as the oil slinger 13 rotates and takes away the lubricating oil of the first lower oil pool 10 and flows into the second lower oil pool 11 through the oil flow hole 28, a height difference will be generated between the lubricating oil levels in the first lower oil pool 10 and the second lower oil pool 11, so that the lubricating oil in the second lower oil pool 11 will flow into the first lower oil pool 10 through the connecting channel 23. At this point, the lubricating oil completes a cycle in the oil circuit system. When the lubricating oil flows from the second lower oil pool 11 into the first lower oil pool 10, the temperature of the lubricating oil will dissipate the temperature taken out of the bearing 3 into the air through the heat dissipation fins 14, thereby ensuring that the operating temperature of the bearing 3 is within a normal range.

[0043] like Fig.11 As shown, the water cooling system: the external cooling water is connected to the inlet pipe 19, the cooling water enters the lower cooling channel 21, and enters the upper cooling channel 20 through the cooling elbow 22, and finally exits the bearing box body 1 through the upper cooling channel 20 and the outlet pipe 18. When the cooling water passes through the lower cooling channel 21, it will take away the temperature of the lubricating oil. At the same time, since the upper cooling channel 20 and the lower cooling channel 21 wrap around the outer ring of the bearing 3 for one circle, they will also carry the temperature generated by the bearing 3 during operation, thereby ensuring the operating temperature of the bearing 3.

[0044] When the working environment is in a low-temperature area, the cooling water may freeze. In this case, the cooling water system can be turned off and the cooling water inside the bearing box body can be drained. Only the oil cooling system can be used to cool and lubricate the bearing. When the working environment is in a high-temperature area, since the oil cooling system cannot meet the working temperature of the bearing, the water cooling system can be turned on and the cooling water can be used to take away the excess temperature to meet the working temperature of the bearing. In the two systems, the oil cooling system can be used alone, the oil cooling system and the water cooling system can be used together, and the water cooling system cannot be used alone.

[0045] It should be noted that, in this article, relational terms such as first and second, etc. 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.

[0046] The above is only an embodiment of the present invention. The common sense such as the known specific structure and characteristics in the scheme is not described in detail here. The ordinary technicians in the relevant field know all the common technical knowledge in the technical field of the invention before the application date or priority date, can know all the existing technologies in the field, and have the ability to apply the conventional experimental means before that date. The ordinary technicians in the relevant field can improve and implement this scheme in combination with their own abilities under the enlightenment given by this application. Some typical known structures or known methods should not become obstacles for ordinary technicians in the relevant field to implement this application. It should be pointed out that for those skilled in the art, without departing from the structure of the present invention, several deformations and improvements can be made, which should also be regarded as the protection scope of the present invention, which will not affect the effect of the implementation of the present invention and the practicality of the patent. The protection scope required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A bearing box with cooling function, characterized in that: The invention comprises a bearing box body (1), a large-hole side cover (4), a large-hole oil baffle plate (5), a small-hole side cover (6) and a small-hole oil baffle plate (7); the main shaft (2) is stepped, the large-hole oil baffle plate (5) is fixed to the large-diameter end of the main shaft (2), and the small-hole oil baffle plate (7) is fixed to the small-diameter end of the main shaft (2); first through holes are provided on both sides of the bearing box body (1), and second through holes are provided on both sides of the large-hole side cover (4) and the small-hole side cover (6); the first through holes are used to install the large-hole side cover (4) and the small-hole side cover (6), and the second through holes are used to install the large-hole oil baffle plate (5) and the small-hole oil baffle plate (7); the large-hole side cover (4) and the small-hole side cover (6) are respectively installed on the large-hole side cover (4) and the small-hole side cover (6) The two sides of the bearing box body (1) are respectively connected to the bearing box body (1), the interior of the large hole side cover (4) and the small hole side cover (6) extend into the interior of the bearing box body (1) and fix the bearing (3) on the main shaft (2) from both sides; the large hole side cover (4) is located on the outer periphery of the large hole oil baffle plate (5), and the small hole side cover (6) is located on the outer periphery of the small hole oil baffle plate (7); the two sides of the bearing (3) are respectively formed between the large hole side cover (4) and the small hole side cover (6) to form a first upper oil pool (8) and a second upper oil pool (9), and the lower side of the bearing box body (1) is provided with a first lower oil pool (10) and a second lower oil pool (11), and the first lower oil pool (10) is located on the first upper oil pool. The large-hole oil baffle plate (5) is provided with a groove (29), in which an oil slinger (13) is installed; the large-hole side cover (4) is provided with a through groove (25) for the oil slinger (13) to pass through; the bottom of the oil slinger (13) is located in the first lower oil pool (10); the oil slinger (13) can rotate with the main shaft (2) and sling the lubricating oil in the first lower oil pool (10) to the first upper oil pool (8); the small-hole oil baffle plate (7) is provided with an oil flow hole (28), and the oil flow hole (28) is used to sling the lubricating oil in the second upper oil pool (9) to the first upper oil pool (8); The lubricating oil is discharged to the second lower oil pool (11); a connecting channel (23) is provided between the first lower oil pool (10) and the second lower oil pool (11); the lubricating oil in the first upper oil pool (8) can flow into the second upper oil pool (9) through the gap between the rolling elements of the bearing (3); an upper cooling channel (20) and a lower cooling channel (21) are respectively provided on the upper and lower sides of the bearing box body (1); one side of the upper cooling channel (20) and the lower cooling channel (21) are connected, and the other side is respectively connected to the outlet pipe (18) and the inlet pipe (19); the upper cooling channel (20) and the lower cooling channel (21) can wrap the outer periphery of the bearing (3).

2. The bearing box with cooling function according to claim 1, characterized in that: The bearing box body (1), the large-hole side cover (4) and the small-hole side cover (6) are all upper and lower split structures, and the upper and lower parts are fixed by bolts.

3. The bearing box with cooling function according to claim 1, characterized in that: The large-hole side cover (4) and the small-hole side cover (6) are both provided with a labyrinth oil return groove (24) on the side away from the bearing (3); the large-hole oil baffle plate (5) and the small-hole oil baffle plate (7) are provided with an oil-slinging groove (31) corresponding to the labyrinth oil return groove (24); the labyrinth oil return groove (24) and the oil-slinging groove (31) work together to prevent lubricating oil from flowing out of the main shaft (2); the large-hole side cover (4) and the small-hole side cover (6) are both provided with an oil return hole (26) on the lower side; the upper side of the oil return hole (26) is connected to the labyrinth oil return groove (24), and the lower side of the oil return hole (26) is respectively connected to the first upper oil pool (8) or the second upper oil pool (9).

4. The bearing box with cooling function according to claim 1, characterized in that: A positive oil-blocking ear (27) protruding outward is provided on a side of the large-hole side cover (4) and the small-hole side cover (6) near the bearing (3); the large-hole oil-blocking plate (5) and the small-hole oil-blocking plate (7) are respectively provided with a reverse oil-blocking ear (30) corresponding to the positive oil-blocking ear (27); an opening is provided on a side of the reverse oil-blocking ear (30) near the positive oil-blocking ear (27); the positive oil-blocking ear (27) and the reverse oil-blocking ear (30) cooperate to reduce the amount of lubricating oil flowing into the shaft hole of the large-hole side cover (4) and the small-hole side cover (6).

5. The bearing box with cooling function according to claim 1, characterized in that: A positioning pin (12) is provided in the first lower oil pool (10). The positioning pin (12) is located in the oil slinger (13) and contacts the lower side of the oil slinger (13). The positioning pin (12) can prevent the oil slinger (13) from jumping.

6. The bearing box with cooling function according to claim 1, characterized in that: A heat dissipation fin (14) is provided on the outer side of the bearing box body (1).

7. The bearing box with cooling function according to claim 1, characterized in that: A cooling fin (15) is provided on the side of the large-hole side cover (4) and the small-hole side cover (6) away from the bearing (3).

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