A device for prolonging the service life of a roll bearing

Abstract

The application discloses a device for prolonging the service life of a rolling mill bearing, and belongs to the technical field of rolling mill equipment. The device comprises a bearing seat and an oil tank. The bearing seat is provided with a bearing, and the bearing is fixedly connected with a rolling mill shaft. The bearing seat is provided with an oiling assembly and a filtering type oil return assembly. The oiling assembly comprises an oil injection assembly and an oil pumping assembly. The oil pumping assembly is fixedly connected with the bearing seat and the rolling mill shaft. The oil pumping assembly is connected with the oil injection assembly. The oil injection assembly is connected with the upper end of the bearing seat. The oil pumping assembly is further fixedly connected with the lower end of the side wall of the oil tank. The oil tank is connected with a cooling assembly for cooling lubricating oil. The cooling assembly is higher than the contact position of the oiling assembly and the oil tank. The top of the oil tank is connected with a pressure gauge and an oil gas balancing assembly. The filtering type oil return assembly is fixedly connected with the top of the oil tank. Through the above-mentioned mode, the application is helpful for lubricating the bearing, cooling the bearing, stabilizing rotation, reducing abrasion, and prolonging the service life of the rolling mill bearing.

Description

Technical Field

[0001] This invention relates to the field of rolling mill equipment technology, and more specifically to a device for extending the service life of rolling mill bearings. Background Technology

[0002] Roll bearings are important components in rolling mill equipment. Their main function is to reduce the coefficient of friction of the rolls during operation and extend their service life. Their operational reliability is particularly important. Roll bearings require lubrication during operation.

[0003] For example, Chinese patent CN214948148U describes a bearing housing for a rolling mill bearing. Support blocks are installed at the middle positions on both sides of the bearing housing body. A mounting base plate is installed below the bearing housing body. A connecting shaft sleeve is installed at the middle position of the front end of the bearing housing body. The connecting shaft sleeve has a connecting and fixing hole inside. A protective connecting ring block is installed inside the front end of the connecting shaft sleeve, and a sealing block is installed outside the front end of the connecting shaft sleeve. In this invention, when adding lubricating oil into the bearing housing body, the lubricating oil enters through the oil inlet and is first filtered by the oil filter screen inside the filter ring block. This filters out impurities and dirt deposited inside the lubricating oil, preventing them from entering the bearing housing body and affecting the bearing's lubrication effect, thus hindering its use. The oil seal and sealing block ensure the sealing of the connection points, resulting in a good overall sealing effect and preventing lubricating oil leakage.

[0004] With prolonged use, the temperature of the aforementioned lubricating grease becomes relatively high, which is not conducive to heat dissipation of the bearing, and its flow is also low, resulting in unsatisfactory lubrication.

[0005] Based on this, the present invention designs a device to extend the service life of rolling mill bearings in order to solve the above problems. Summary of the Invention

[0006] In view of the above-mentioned shortcomings of the existing technology, the present invention provides a device for extending the service life of rolling mill bearings.

[0007] To achieve the above objectives, the present invention provides the following technical solution:

[0008] A device for extending the service life of rolling mill bearings includes a bearing housing and an oil tank;

[0009] The bearing is coaxially fixedly installed in the bearing housing, and the bearing is fixedly connected to the roll shaft;

[0010] The upper and lower ends of the bearing housing are respectively connected to a lubrication assembly for lubricating the bearing and a filter-type oil return assembly for lubricating oil recovery and filtration.

[0011] The refueling assembly includes an oil injection assembly and an oil extraction assembly. The oil extraction assembly is fixedly connected to the bearing housing, the oil extraction assembly is fixedly connected to the roller shaft, the oil extraction assembly is connected to the oil injection assembly, the oil injection assembly is connected to the upper end of the bearing housing, and the oil extraction assembly is also fixedly connected to the lower end of the side wall of the oil tank.

[0012] The oil tank is connected to a cooling assembly for cooling the lubricating oil, and the cooling assembly is higher than the contact part between the filling assembly and the oil tank.

[0013] The top of the oil tank is connected to a pressure gauge for monitoring oil and gas pressure and an oil and gas balance component for balancing gas pressure, and the oil outlet of the filter-type oil return component is fixedly connected to the top of the oil tank.

[0014] Furthermore, the oil extraction assembly includes a linkage assembly and a one-way oil supply assembly. The linkage assembly is connected to the roller shaft, the linkage assembly is fixedly connected to the one-way oil supply assembly, the one-way oil supply assembly is fixedly connected to the lower end of the side wall of the oil tank, and the one-way oil supply assembly is integrated with the oil injection assembly.

[0015] Furthermore, the oil injection assembly includes a first pipe, an oil injection hole, and a first transverse hole. The first pipe is connected to a one-way oil supply assembly. A set of first transverse holes and two sets of oil injection holes are provided inside the bearing housing. The first transverse holes and the oil injection holes are connected, and the first transverse holes are connected to the first pipe. The outlets of the two sets of oil injection holes are arranged facing both sides of the bearing.

[0016] Furthermore, the linkage assembly includes a first gear ring, a second gear ring, and a horizontal shaft. The roll shaft is fixedly installed in the mounting hole of the first gear ring, the first gear ring is meshed with the second gear ring, the horizontal shaft is fixedly installed in the mounting hole of the second gear ring, the horizontal shaft is fixedly connected to the side wall of the bearing seat through a bearing, and the second gear ring is connected to the one-way oil supply assembly.

[0017] Furthermore, the one-way oil supply assembly includes a first one-way valve, a second one-way valve, a sleeve, a second pipe, a bearing, a square frame, a slide rod, a mounting base, and a piston. The mounting base is fixedly installed on the side wall of the bearing housing. A sleeve is installed on the mounting base, and a piston is slidably connected inside the sleeve. A slide rod is fixedly connected to the top of the piston, and a square frame is fixedly connected to the top of the slide rod. The inner wall of the square frame is movably connected to the outer wall of the outer ring of the bearing. The inner ring of the bearing is fixedly connected to the side wall of the second gear ring. A second pipe is fixedly connected to the through hole at the lower end of the sleeve. A second one-way valve is installed on the second pipe. The lower end of the side wall of the sleeve is connected to and fixedly connected to the first pipe. The first one-way valve is fixedly installed on the first pipe. When the piston moves upward, the second one-way valve opens and the first one-way valve closes. When the piston moves downward, the first one-way valve opens and the second one-way valve closes. The second pipe is fixedly connected to the lower end of the side wall of the oil tank.

[0018] Furthermore, the filter-type oil return assembly includes a third pipe, an oil receiving assembly, a filter assembly, and a follow-up sealing assembly. The third pipe is fixedly installed on the top of the oil tank. The fourth pipe connects the third pipe to the filter assembly, which in turn connects to the oil receiving assembly. A follow-up sealing assembly is connected at the connection between the oil receiving assembly and the filter assembly. The oil receiving assembly is connected to the bearing housing. When the filter assembly is filtering, the follow-up sealing assembly is in the open state. When the filter assembly is cleaning impurities, the follow-up sealing assembly is in the closed state, which in turn causes the oil receiving assembly to be in the closed state.

[0019] Furthermore, the cooling assembly includes an exhaust pipe, a fan, an intake pipe, a first horizontal pipe, a serpentine pipe, and a second horizontal pipe. The oil tank is fixedly connected to the intake pipe and the exhaust pipe. The inner end of the intake pipe is fixedly connected to the second horizontal pipe, and the inner end of the exhaust pipe is fixedly connected to the first horizontal pipe. A serpentine pipe is fixedly connected between the first horizontal pipe and the second horizontal pipe, and the outer end of the intake pipe is fixedly connected to the output end of the fan.

[0020] Furthermore, the serpentine pipe extends above the connection point between the second pipe and the oil tank.

[0021] Furthermore, the oil-gas balance assembly includes an electronically controlled valve, an air pipe, an oil film, an installation pipe, a support base, and an oil receiving tank. The air pipe is fixedly installed on the top of the oil tank, and an electronically controlled valve is fixedly connected to the air pipe. The air pipe is fixedly connected to the support base, and an oil receiving tank is threadedly connected to the lower end of the air pipe. The top of the air pipe on the top of the support base is in close contact with the oil film, and the installation pipe is threadedly connected to the air pipe on the top of the support base. The installation pipe is in close contact with the outer edge of the top of the oil film.

[0022] Beneficial effects: In this invention, the first gear ring of the linkage component of the oil-suction component of the roll shaft drives the oil-lubricating component to rotate. The first gear ring drives the second gear ring to rotate, and the second gear ring drives the bearing of the one-way oil supply component to rotate. The bearing drives the square frame to move up and down reciprocally, the square frame drives the slide rod to move up and down reciprocally, and the slide rod drives the piston to move up and down reciprocally. When the piston moves upward, the second one-way valve opens and the first one-way valve closes, and the second pipe draws the lubricating oil cooled by the oil tank into the sleeve. When the piston moves downward, the first one-way valve opens and the second one-way valve closes, and the piston pushes the lubricating oil in the sleeve into the first pipe of the oil-spraying component, and then into the first transverse hole, and sprays it out from the two sets of oil spray holes. The two sets of oil spray holes spray oil on both sides of the bearing in the bearing seat, which helps to lubricate the bearing. At the same time, it cools the bearing, which is conducive to stable rotation, reduces wear, and helps to extend the service life of the roll bearing. Attached Figure Description

[0023] To more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the accompanying drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are merely some embodiments of the present invention. For those skilled in the art, other drawings can be obtained based on these drawings without any creative effort.

[0024] Figure 1 This invention provides a three-dimensional device for extending the service life of rolling mill bearings. Figure 1 ;

[0025] Figure 2 This is a front view of a device for extending the service life of a rolling mill bearing according to the present invention;

[0026] Figure 3 Left view of a device for extending the service life of a rolling mill bearing according to the present invention;

[0027] Figure 4 This invention provides a three-dimensional device for extending the service life of rolling mill bearings. Figure 2 ;

[0028] Figure 5 This invention provides a three-dimensional device for extending the service life of rolling mill bearings. Figure 3 ;

[0029] Figure 6 For along Figure 2 A sectional view along the AA direction;

[0030] Figure 7 For along Figure 3 BB direction sectional view;

[0031] Figure 8 For along Figure 3 A cross-sectional view along the CC direction;

[0032] Figure 9 for Figure 7 Enlarged view of the structure at point D;

[0033] Figure 10 for Figure 8 Enlarged view of the structure at point E.

[0034] The labels in the diagram represent:

[0035] 1. Bearing housing 2. Roll shaft 3. Oil tank 4. Oil filling assembly 41. First pipe 42. First check valve 43. Second check valve 44. Sleeve 45. Second pipe 46. First gear ring 47. Bearing 48. Square frame 49. Second gear ring 410. Horizontal shaft 411. Slide rod 412. Mounting base 413. Oil injection hole 414. First horizontal hole 415. Piston 5. Filter-type oil return assembly 51. Third pipe 52. Cover plate 53. Horizontal cylinder 54. Fourth pipe 55. 56. Second horizontal hole 57. Oil inlet hole 58. Spring 59. Guide seat 510. Conical plug 511. Filter cartridge 512. Retaining ring 513. First horizontal bar 514. Second horizontal bar 515. Conical ring 6. Pressure gauge 7. Oil-gas balance assembly 71. Electrically controlled valve 72. Gas pipe 73. Oil film 74. Mounting pipe 75. Support seat 76. Oil tank 8. Cooling assembly 81. Gas outlet pipe 82. Fan 83. Gas inlet pipe 84. First horizontal pipe 85. Serpentine pipe 86. Second horizontal pipe. Detailed Implementation

[0036] To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0037] The present invention will be further described below with reference to embodiments.

[0038] Example 1, please refer to Figures 1-10 A device for extending the service life of rolling mill bearings includes a bearing housing 1 and an oil tank 3;

[0039] A bearing is coaxially fixedly installed in the bearing housing 1, and the bearing is fixedly connected to the roll shaft 2;

[0040] The upper and lower ends of the bearing housing 1 are respectively connected to a lubrication assembly 4 for lubricating the bearing and a filter-type oil return assembly 5 for lubricating oil recovery and filtration.

[0041] The refueling assembly 4 includes an oil injection assembly and an oil extraction assembly. The oil extraction assembly is fixedly connected to the bearing housing 1, the oil extraction assembly is fixedly connected to the roller shaft 2, the oil extraction assembly is connected to the oil injection assembly, the oil injection assembly is connected to the upper end of the bearing housing 1, and the oil extraction assembly is also fixedly connected to the lower end of the side wall of the oil tank 3.

[0042] The oil tank 3 is connected to a cooling assembly 8 for cooling the lubricating oil, and the cooling assembly 8 is higher than the contact part between the filling assembly 4 and the oil tank 3;

[0043] The top of the oil tank 3 is connected to a pressure gauge 6 for monitoring oil and gas pressure and an oil and gas balance component 7 for balancing gas pressure, and the oil outlet of the filter-type oil return component 5 is fixedly connected to the top of the oil tank 3.

[0044] The roller shaft 2 drives the oil pumping component of the lubrication assembly 4 to pump the cooled lubricating oil in the oil tank 3 into the oil spraying component. The oil spraying component sprays oil onto the bearing in the bearing housing 1, which helps lubricate the bearing and cools it down, which is beneficial for stable rotation, reduces wear, and helps extend the service life of the roller bearing. In addition, the oil pumping is driven by the roller shaft 2, which reduces the amount of power required and helps save energy. The filter-type oil return assembly 5 filters the lubricating oil after cooling and use, reducing impurities and wear on the bearing, which is beneficial for practical use. Finally, the cooling assembly 8 can cool down the lubricating oil.

[0045] A sealing ring is provided at the contact point between the bearing housing 1 and the roll shaft 2;

[0046] The oil extraction assembly includes a linkage assembly and a one-way oil supply assembly. The linkage assembly is connected to the roller shaft 2, and the linkage assembly is fixedly connected to the one-way oil supply assembly. The one-way oil supply assembly is fixedly connected to the lower end of the side wall of the oil tank 3, and the one-way oil supply assembly is connected to the oil spraying assembly.

[0047] The oil injection assembly includes a first pipe 41, an oil injection hole 413 and a first transverse hole 414. The first pipe 41 is connected to a one-way oil supply assembly. A set of first transverse holes 414 and two sets of oil injection holes 413 are provided in the bearing housing 1. The first transverse holes 414 and the oil injection holes 413 are connected, and the first transverse holes 414 are connected to the first pipe 41. The outlets of the two sets of oil injection holes 413 are arranged facing the two sides of the bearing.

[0048] The linkage assembly includes a first gear ring 46, a second gear ring 49, and a horizontal shaft 410. The roll shaft 2 is fixedly installed in the mounting hole of the first gear ring 46. The first gear ring 46 is meshed with the second gear ring 49. The horizontal shaft 410 is fixedly installed in the mounting hole of the second gear ring 49. The horizontal shaft 410 is fixedly connected to the side wall of the bearing housing 1 through a bearing. The second gear ring 49 is connected to the one-way oil supply assembly.

[0049] The one-way oil supply assembly includes a first one-way valve 42, a second one-way valve 43, a sleeve 44, a second pipe 45, a bearing 47, a square frame 48, a slide rod 411, a mounting base 412, and a piston 415. The mounting base 412 is fixedly installed on the side wall of the bearing housing 1. The sleeve 44 is installed on the mounting base 412. The piston 415 is slidably connected inside the sleeve 44. The slide rod 411 is fixedly connected to the top of the piston 415. The square frame 48 is fixedly connected to the top of the slide rod 411. The inner wall of the square frame 48 is movably connected to the outer wall of the outer ring of the bearing 47. The inner ring of 7 is fixedly connected to the side wall of the second gear ring 49. The second pipe 45 is fixedly connected to the through hole at the lower end of the sleeve 44. The second one-way valve 43 is installed on the second pipe 45. The lower end of the side wall of the sleeve 44 is fixedly connected to the first pipe 41. The first one-way valve 42 is fixedly installed on the first pipe 41. When the piston 415 moves upward, the second one-way valve 43 opens and the first one-way valve 42 closes. When the piston 415 moves downward, the first one-way valve 42 opens and the second one-way valve 43 closes. The second pipe 45 is fixedly connected to the lower end of the side wall of the oil tank 3.

[0050] The roller shaft 2 drives the first gear ring 46 of the linkage component of the oil pumping component of the oil filling component 4 to rotate. The first gear ring 46 drives the second gear ring 49 to rotate. The second gear ring 49 drives the bearing 47 of the one-way oil supply component to rotate. The bearing 47 drives the square frame 48 to move up and down reciprocally. The square frame 48 drives the slide rod 411 to move up and down reciprocally. The slide rod 411 drives the piston 415 to move up and down reciprocally. When the piston 415 moves upward, the second one-way valve 43 opens and the first one-way valve 42 closes. The second pipe 45 cools the oil tank 3. When the lubricating oil is drawn into the sleeve 44 and the piston 415 moves downward, the first one-way valve 42 opens and the second one-way valve 43 closes. The piston 415 pushes the lubricating oil in the sleeve 44 into the first pipe 41 of the oil spraying assembly, and then into the first transverse hole 414. The oil is then sprayed out from the two sets of oil spraying holes 413. The two sets of oil spraying holes 413 spray oil on both sides of the bearing in the bearing housing 1, which helps to lubricate the bearing. At the same time, it cools the bearing, which is conducive to stable rotation, reduces wear, and helps to extend the service life of the roll bearing.

[0051] The filter-type oil return assembly 5 includes a third pipe 51, an oil receiving assembly, a filter assembly, and a follow-up sealing assembly. The third pipe 51 is fixedly installed on the top of the oil tank 3. The fourth pipe 54 is connected to the filter assembly. The filter assembly is connected to the oil receiving assembly. The follow-up sealing assembly is connected at the connection between the oil receiving assembly and the filter assembly. The oil receiving assembly is connected to the bearing seat 1. When the filter assembly is filtering, the follow-up sealing assembly is in the open state. When the filter assembly is cleaning impurities, the follow-up sealing assembly is in the closed state, which drives the oil receiving assembly to be in the closed state.

[0052] The oil receiving assembly includes a fourth pipe 54, a second transverse hole 55, and an oil receiving hole 56. The lower end of the bearing housing 1 is provided with a set of second transverse holes 55 and two sets of oil receiving holes 56. The oil receiving holes 56 communicate with the second transverse holes 55 and are located on both sides of the bearing inside the bearing housing 1. The fourth pipe 54 is fixedly connected to the bearing housing 1 and communicates with the second transverse hole 55. The fourth pipe 54 is connected to the filter assembly.

[0053] The filter assembly includes a cover plate 52, a horizontal cylinder 53, a filter cartridge 510, a retaining ring 511, and a first crossbar 512. The horizontal cylinder 53 is fixedly connected to the fourth pipe 54. The retaining ring 511 is fixedly connected to the end of the horizontal cylinder 53 near the inner wall of the fourth pipe 54. The outer wall of the end of the filter cartridge 510 near the fourth pipe 54 is slidably connected to the inner wall of the retaining ring 511. The end of the filter cartridge 510 away from the fourth pipe 54 is fixedly connected to the cover plate 52. The cover plate 52 is threadedly connected to the horizontal cylinder 53. The first crossbar 512 is fixedly connected to the end of the cover plate 52 near the fourth pipe 54. The side wall of the horizontal cylinder 53 is connected to the third pipe 51. The third pipe 51 is located on the side wall of the retaining ring 511 away from the fourth pipe 54.

[0054] The follow-up sealing assembly includes a spring 57, a guide seat 58, a conical plug 59, a second crossbar 513, and a conical ring 514. The end of the fourth pipe 54 away from the bearing seat 1 is fixedly connected to the guide seat 58 and the conical ring 514. The end of the guide seat 58 near the bearing seat 1 is fixedly connected to the guide seat 58. The movable end of the guide seat 58 is fixedly connected to the second crossbar 513. The second crossbar 513 is in close sliding connection with the guide seat 58. The conical plug 59, which is used to cooperate with the conical ring 514, is fixedly connected to the second crossbar 513. The second crossbar 513 is in active contact with the first crossbar 512.

[0055] The end dimension of the tapered plug 59 near the bearing housing 1 is larger than the end dimension of the tapered plug 59 away from the bearing housing 1.

[0056] When the filter cartridge 510 is in contact with the retaining ring 511, the spring 57 is in a compressed state, and the conical plug 59 does not contact the conical ring 514.

[0057] After the filter cartridge 510 and the retaining ring 511 are separated, the conical plug 59 is in close contact with the conical ring 514, and the cover plate 52 is not separated from the horizontal cylinder 53.

[0058] The cover plate 52 of the filter component of the filter-type oil return assembly 5 is connected to the cross cylinder 53. The cover plate 52 drives the first cross rod 512 to contact the second cross rod 513, pushing the second cross rod 513 to move. The spring 57 is in a compressed state, and the conical plug 59 does not contact the conical ring 514. The lubricating oil in the bearing seat 1 enters the oil receiving hole 56 of the oil receiving assembly, and then enters the fourth pipe 54 through the second cross hole 55. The lubricating oil enters the filter cartridge 510 through the gap between the conical plug 59 and the conical ring 514. The lubricating oil is filtered through the filter cartridge 510. The filtered lubricating oil enters the oil tank 3 through the third pipe 51, realizing the filtration of lubricating oil, reducing the wear of impurities on the bearing, and benefiting actual use.

[0059] When it is necessary to clean the impurities inside the filter cartridge 510, rotate the cover plate 52. The cover plate 52 drives the first crossbar 512 to move. The restoring force of the spring 57 drives the second crossbar 513 to move. The second crossbar 513 drives the conical plug 59 to move. After the first crossbar 512 and the second crossbar 513 separate, the conical plug 59 contacts the conical ring 514, sealing the fourth pipe 54. Continue to rotate the cover plate 52. After the cover plate 52 separates from the horizontal cylinder 53, the cover plate 52 drives the filter cartridge 510 to be taken out from the horizontal cylinder 53. Then clean the impurities inside the filter cartridge 510. After cleaning the impurities, the cover plate 52 of the filter component of the filter return assembly 5 is connected to the horizontal cylinder 53. The cover plate 52 drives the first crossbar 512 to contact the second crossbar 513 and push the second crossbar 513 to move. The spring 57 is in a compressed state, and the conical plug 59 does not contact the conical ring 514, which facilitates the cleaning of impurities.

[0060] The cooling assembly 8 includes an exhaust pipe 81, a fan 82, an intake pipe 83, a first horizontal pipe 84, a serpentine pipe 85, and a second horizontal pipe 86. The oil tank 3 is fixedly connected to the intake pipe 83 and the exhaust pipe 81. The second horizontal pipe 86 is fixedly connected to the inner end of the intake pipe 83. The first horizontal pipe 84 is fixedly connected to the inner end of the exhaust pipe 81. A serpentine pipe 85 is fixedly connected between the first horizontal pipe 84 and the second horizontal pipe 86. The outer end of the intake pipe 83 is fixedly connected to the output end of the fan 82.

[0061] The serpentine pipe 85 is higher than the connection between the second pipe 45 and the oil tank 3;

[0062] The fan 82 of the cooling assembly 8 draws air into the intake pipe 83, then into the second horizontal pipe 86, then into the serpentine pipe 85, and finally into the first horizontal pipe 84, before exiting through the outlet pipe 81. The flowing air carries away the heat from the second horizontal pipe 86, the serpentine pipe 85, and the first horizontal pipe 84, which helps to cool the lubricating oil.

[0063] The oil-gas balance assembly 7 includes an electronically controlled valve 71, an air pipe 72, an oil film 73, an installation pipe 74, a support base 75, and an oil receiving tank 76. The air pipe 72 is fixedly installed on the top of the oil tank 3. The electronically controlled valve 71 is fixedly connected to the air pipe 72. The air pipe 72 is fixedly connected to the support base 75. The lower end of the air pipe 72 is threadedly connected to the oil receiving tank 76. The top of the air pipe on the top of the support base 75 is in close contact with the oil film 73. The air pipe on the top of the support base 75 is threadedly connected to the installation pipe 74. The installation pipe 74 is in close contact with the outer edge of the top of the oil film 73.

[0064] Pressure gauge 6 monitors the oil and gas pressure value of oil tank 3. When the oil and gas pressure value is higher than the set value, the electric control valve 71 of oil and gas balance component 7 is opened. The oil and gas in oil tank 3 enter the oil receiving tank 76 through air pipe 72. After oil and gas separation by installation pipe 74, it is discharged from oil film 73, which facilitates the control of oil and gas pressure in oil tank 3. At the same time, the lubricating oil in the oil and gas can be collected into the oil receiving tank 76 to reduce the discharge of lubricating oil in the oil and gas and avoid environmental pollution.

[0065] The above embodiments are only used to illustrate the technical solutions of the present invention, and are not intended to limit it. Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art should understand that modifications can still be made to the technical solutions described in the foregoing embodiments, or equivalent substitutions can be made to some of the technical features. Such modifications or substitutions will not cause the essence of the corresponding technical solutions to deviate from the spirit and scope of the technical solutions of the embodiments of the present invention.

Claims

1. An apparatus for prolonging the service life of a roller bearing, comprising a bearing seat (1) and an oil tank (3), characterized in that: a bearing is coaxially fixedly installed in the bearing seat (1) and is fixedly connected with a roller shaft (2); an oiling assembly (4) for lubricating oil of the bearing and a filtering type oil return assembly (5) for recycling and filtering of the lubricating oil are respectively connected with upper and lower ends of the bearing seat (1); the oiling assembly (4) comprises an oil injection assembly and an oil pumping assembly, the oil pumping assembly is fixedly connected with the bearing seat (1) and the roller shaft (2), the oil pumping assembly is connected with the oil injection assembly, the oil injection assembly is connected with the upper end of the bearing seat (1), and the oil pumping assembly is further fixedly connected with a lower end of a side wall of the oil tank (3); the oil tank (3) is connected with a cooling assembly (8) for cooling of the lubricating oil, and the cooling assembly (8) is higher than a contact position of the oiling assembly (4) with the oil tank (3); a pressure gauge (6) for monitoring of oil gas pressure and an oil gas balancing assembly (7) for pressure balance are connected with a top of the oil tank (3), and an oil outlet end of the filtering type oil return assembly (5) is fixedly connected with the top of the oil tank (3); the oil pumping assembly comprises a linkage assembly and a one-way oil supply assembly, the linkage assembly is connected with the roller shaft (2), the linkage assembly is fixedly connected with the one-way oil supply assembly, and the one-way oil supply assembly is fixedly connected with a lower end of a side wall of the oil tank (3); the oil injection assembly comprises a first pipeline (41), oil injection holes (413) and first transverse holes (414), the first pipeline (41) is connected with the one-way oil supply assembly, a group of the first transverse holes (414) and two groups of the oil injection holes (413) are formed in the bearing seat (1), the first transverse holes (414) and the oil injection holes (413) are communicated, the first transverse holes (414) are communicated with the first pipeline (41), and liquid outlets of the two groups of the oil injection holes (413) are arranged towards two sides of the bearing; the linkage assembly comprises a first gear ring (46), a second gear ring (49) and a cross shaft (410), the roller shaft (2) is fixedly installed in an installation hole of the first gear ring (46), the first gear ring (46) is meshingly connected with the second gear ring (49), the cross shaft (410) is fixedly installed in an installation hole of the second gear ring (49), the cross shaft (410) is fixedly connected with a side wall of the bearing seat (1) through a bearing, and the second gear ring (49) is connected with the one-way oil supply assembly. The one-way oil supply assembly comprises a first one-way valve (42), a second one-way valve (43), a sleeve (44), a second pipeline (45), a bearing (47), a square frame (48), a sliding rod (411), a mounting seat (412) and a piston (415), the mounting seat (412) is fixedly installed on the side wall of the bearing seat (1), the sleeve (44) is installed on the mounting seat (412), the piston (415) is slidably connected to the inside of the sleeve (44), the top of the piston (415) is fixedly connected with the sliding rod (411), the top of the sliding rod (411) is fixedly connected with the square frame (48), the inner wall of the square frame (48) is movably connected with the outer wall of the inner ring of the bearing (47), the inner ring of the bearing (47) is fixedly connected with the side wall of the second gear ring (49), the through hole at the lower end of the sleeve (44) is fixedly connected with the second pipeline (45), the second pipeline (45) is installed with the second one-way valve (43), the lower end of the sleeve (44) is fixedly connected with the first pipeline (41) in communication, the first one-way valve (42) is fixedly installed on the first pipeline (41), when the piston (415) moves upward, the second one-way valve (43) is opened and the first one-way valve (42) is closed, when the piston (415) moves downward, the first one-way valve (42) is opened and the second one-way valve (43) is closed, the second pipeline (45) is fixedly connected with the lower end of the side wall of the oil tank (3).

2. The device for prolonging the service life of a roll bearing according to claim 1, characterized in that, The filtering type oil return assembly (5) comprises a third pipeline (51), an oil receiving assembly, a filtering assembly and a follow-up type blocking assembly, the third pipeline (51) is fixedly installed on the top of the oil tank (3), a fourth pipeline (54), the third pipeline (51) is connected with the filtering assembly, the filtering assembly is connected with the oil receiving assembly, the follow-up type blocking assembly is connected at the connection position of the oil receiving assembly and the filtering assembly, the oil receiving assembly is connected with the bearing seat (1), when the filtering assembly filters, the follow-up type blocking assembly is in an open state, when the filtering assembly removes impurities, the follow-up type blocking assembly is in a blocking state, and the oil receiving assembly is in a blocking state.

3. The device for prolonging the service life of a roll bearing according to claim 2, characterized in that, The cooling assembly (8) comprises an air outlet pipe (81), a fan (82), an air inlet pipe (83), a first horizontal pipe (84), a serpentine pipe (85) and a second horizontal pipe (86), the oil tank (3) is fixedly connected with the air inlet pipe (83) and the air outlet pipe (81), the inner end of the air inlet pipe (83) is fixedly connected with the second horizontal pipe (86), the inner end of the air outlet pipe (81) is fixedly connected with the first horizontal pipe (84), the first horizontal pipe (84) and the second horizontal pipe (86) are fixedly connected with the serpentine pipe (85), and the outer end of the air inlet pipe (83) is fixedly connected with the output end of the fan (82).

4. The device for prolonging the service life of a roll bearing according to claim 3, characterized in that, The serpentine pipe (85) is higher than the connection position of the second pipeline (45) and the oil tank (3).

5. The device for prolonging the service life of a roll bearing according to claim 4, characterized in that, The oil-gas balance assembly (7) comprises an electric control valve (71), an air pipe (72), an oil film (73), a mounting pipe (74), a supporting seat (75) and an oil receiving bucket (76), the air pipe (72) is fixedly installed on the top of the oil tank (3), the electric control valve (71) is fixedly connected to the air pipe (72), the air pipe (72) is fixedly connected with the supporting seat (75), the oil receiving bucket (76) is threadedly connected to the lower end of the air pipe (72), the top of the air pipe on the top of the supporting seat (75) is in abutting contact with the oil film (73), the air pipe on the top of the supporting seat (75) is threadedly connected with the mounting pipe (74), and the mounting pipe (74) is in abutting contact with the top outer edge of the oil film (73).

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