A cleaning method and cleaning device for removing oil stains from roll bearings

Abstract

The present invention discloses a cleaning method and a cleaning device for removing oil stains from a roll bearing. The cleaning method is to use a rotating nozzle to extend into the bearing chamber, and the nozzle sprays a cleaning liquid to clean the oil stains in the bearing chamber, the ball bearings and the cage. The cleaning liquid will be transported to the cleaning position through a rotary joint, a hollow shaft and the nozzle. The axial and radial movements are realized by using a feed cylinder and a rotary drive mechanism of the hollow shaft. Therefore, it is not necessary to completely remove the ball bearings and the cage of the bearing, and the oil stains in the bearing chamber can be cleaned, thus avoiding the disadvantages of bearing damage caused by removing the rolling elements from the cage in the prior art, and also saving manpower and material resources. When the present invention performs reciprocating cleaning, a two-stage feed mechanism is used to achieve feeding, which not only meets the need for rapid feeding but also meets the need for fine feeding. The present invention also uses a rotary joint to introduce high-pressure water and hot air for drying, realizing the requirements of rapid cleaning, rapid drying and rapid resumption of production.

Description

Technical Field

[0001] The present invention relates to a cleaning method and device for a roll bearing, in particular to a cleaning device for removing oil stains from the bearing of a backup roll of a hot strip mill. Background Art

[0002] In a multi-roll mill for producing hot strip steel, the rolling bearing of the backup roll is one of the most easily worn mechanical parts. During the steel rolling process, the rolling force will ultimately be transmitted to the backup roll bearing through the work roll and the backup roll, and the rolling process is completed by the rotation of the rolls.

[0003] In a rolling mill, the rolling bearing of the backup roll bears all the rolling forces. After long-term operation, the wear of its rolling elements and raceways will be inevitable, and the debris worn off will contaminate the grease. At the same time, since the seal cannot completely block external pollutants, cooling water and external dust will also enter the bearing through the gaps in the roll neck. Especially for the rolling bearing of the lower backup roll of a hot strip mill, due to the poor seal, cooling water with various pollutants such as oxides, metal chips, and salt ions will seep or be sucked into the grease of the bearing, and even if grease is added, it is not easy to reduce the accumulation of these pollutants.

[0004] The above-mentioned reasons will cause the grease to deteriorate, exacerbate the wear of the bearing, and shorten the service life of the bearing. To ensure the long life of the backup roll bearing, in addition to regularly injecting new grease into the backup roll bearing for renewal, it is also necessary to thoroughly clean the bearing regularly and replace it with brand-new grease.

[0005] However, for large and medium-sized bearings, due to their large size and heavy weight, it is very inconvenient to remove them from the equipment for cleaning.

[0006] In a Chinese patent document with an application number of CN201821686430.3 and a title of a cleaning device for a cylindrical bearing, a cleaning device for a cylindrical bearing is provided. The cleaning device includes a cleaning chamber and a fixing clamp. The fixing clamp is installed on the piston rod of a hydraulic cylinder, and the piston rod of another hydraulic cylinder is fixedly connected to the above-mentioned fixed panel. A threaded rotating shaft is installed on a motor, and an adjusting threaded cylinder is screwed on the threaded rotating shaft. The lower end of the adjusting threaded cylinder is rotatably connected to the upper end of a moving block passing through the threaded rotating shaft. The two sides of the lower end surface of the moving block are rotatably connected to the upper end of a first connecting rod through hinges. The lower end of the first connecting rod is rotatably connected to the upper end of an inner cleaning brush through a hinge. The lower end of the inner cleaning brush is rotatably connected to the upper end of a second connecting rod through a hinge. The lower end of the second connecting rod is rotatably connected to the bottom plate through a hinge. A spring is sleeved on the insertion rod between the limit plate and the insertion cylinder, and an outer cleaning brush is fixed to the outer end of the insertion rod.

[0007] The cleaning method of this patent is to remove the bearing and put it into the cleaning chamber of the device for cleaning. The disadvantage of this method is that it consumes a lot of manpower and time, and it is easy to damage the bearing ball cage due to improper disassembly operation. Moreover, the device structure in the comparative document is complex, and errors are also likely to occur during the operation process.

[0008] Therefore, how to overcome the above disadvantages so that the cleaning method can improve efficiency and achieve the cleaning purpose simply and quickly is an urgent problem to be solved in the industry. Summary of the Invention

[0009] In order to solve the problem of cleaning the oil stain on the bearing in the prior art, the present invention provides a method for removing the oil stain on the roll bearing and its cleaning device. The method and device can use a high-pressure spray gun to rotate and spray the oil stain on the ball and the ball cage of the bearing, with high cleaning efficiency, without disassembling the bearing and the ball cage, and can be operated on-site, facilitating daily maintenance and repair.

[0010] The technical solution adopted to solve the above technical problems is as follows:

[0011] A method for removing the oil stain on the roll bearing, the method uses a rotating nozzle to extend into the bearing chamber to be cleaned, and the nozzle sprays high-pressure cleaning water to clean the oil stain in the bearing chamber, on the balls and in the ball cage; the high-pressure cleaning water in the nozzle is introduced through a hollow shaft, and the hollow shaft is connected to a circulating water supply mechanism by a rotary joint, and the other end of the rotary joint is connected to a feed cylinder, and the feed cylinder sequentially pushes the rotary joint, the hollow shaft and the nozzle to achieve axial feed, and complete the reciprocating flushing of the bearing chamber.

[0012] In the above cleaning method for removing the oil stain on the roll bearing, a hot air inlet is arranged in the rotary joint to introduce high-temperature hot air, and the high-temperature hot air sequentially passes through the hollow shaft and the spray rod and enters the nozzle to dry the bearing chamber.

[0013] In the above cleaning method for removing the oil stain on the roll bearing, a trolley is provided. The trolley is placed on an inclined track through wheels and is manually driven by a lifting winch through a steel wire rope. The feeding action is completed by using the acting force generated by the inclination of the track, and the reset is completed by using manual drive; the feed cylinder, the rotary joint and the hollow shaft are fixed on a bracket, and the bracket is suspended on the trolley; the reciprocating movement of the trolley drives the bracket to make a reciprocating movement.

[0014] In the above cleaning method for removing the oil stain on the roll bearing, a circulating water supply mechanism is provided. Among them, the circulating water tank is provided with a clean water area and a turbid water area. The waste water after cleaning flows into the turbid water area, and after precipitation, it overflows into the clean water area again and is sent to the rotary joint through a water supply pump.

[0015] The present invention also provides a cleaning device for removing the oil stain on the roll bearing, and its technical solution is as follows:

[0016] A cleaning device for removing oil stains from roll bearings, which includes a cleaning part and a moving part. Among them, the moving part is used to push the cleaning mechanism to the designated working position, and the cleaning mechanism is used to clean the bearing chamber; the cleaning mechanism includes a bracket, a feeding cylinder, a rotary joint, a hollow shaft, a shaft sleeve, a rotary drive mechanism for the hollow shaft and a cleaning component; among them, the piston rod of the feeding cylinder is connected to the rotary joint; the other end of the rotary joint is connected to the hollow shaft, and a cleaning component is provided at the right end of the hollow shaft. The cleaning component includes a cleaning rod and a spray head. The hollow shaft is communicated with the cleaning rod, and a spray head is arranged at the end of the cleaning rod; the rotary joint is provided with an inlet end for high-pressure cleaning water, and the high-pressure cleaning water sequentially passes through the inlet end, the hollow shaft and the cleaning rod and enters the spray head, and is sprayed onto the inner wall of the bearing box for flushing; the hollow shaft is connected to the rotary drive mechanism of the hollow shaft through a shaft sleeve; the cleaning part is installed in the bracket.

[0017] For the above-mentioned cleaning device for removing oil stains from roll bearings, the moving part includes a trolley, a track, and a trolley lifting handwheel; among them, the trolley is arranged on an inclined track; a bracket is provided on the trolley; the cylinder body of the feeding cylinder is fixed on the bracket; the traction of the steel wire rope of the trolley lifting handwheel enables the moving part to push the cleaning part to move back and forth in the bearing.

[0018] For the above-mentioned cleaning device for removing oil stains from roll bearings, the high-pressure cleaning water is circulated through a circulating water supply mechanism; the circulating water supply mechanism includes a circulating water tank, a water supply pump, a motor, a water temperature heater, a filter screen, and a water supply valve; among them, the water supply pump and the motor are arranged on the circulating water tank. The water suction port of the water supply pump is connected to the circulating water tank, and its water outlet is sequentially connected to the water temperature heater, the water supply valve, and the rotary joint; the filter screen is arranged on the water suction port of the water supply pump.

[0019] For the above-mentioned cleaning device for removing oil stains from roll bearings, a staggered parallel partition and a drain valve are arranged in the circulating water tank; among them, the staggered parallel partition is arranged in the circulating water tank, dividing the water tank into a clean water area and a turbid water area; the drain valve is arranged at one end of the clean water area; the drain valve is arranged at one end of the turbid water area.

[0020] For the above-mentioned cleaning device for removing oil stains from roll bearings, a suspension spring is provided on the top of the trolley, and the bracket is hung on the suspension spring through a hook.

[0021] For the above-mentioned cleaning device for removing oil stains from roll bearings, the track has an inclination angle of 5° - 10° with the horizontal line, and the inclination direction is that one end close to the trolley lifting handwheel is higher than the other end; a bearing box support is arranged in the turbid water area of the circulating water tank, and the upper plane of the bearing box support has an inclination angle of 5° - 10° with the reference plane, and the inclination direction is the same as that of the track.

[0022] Beneficial effects

[0023] Compared with the prior art, the beneficial effects of the present invention are:

[0024] In the present invention, high-pressure cleaning water is conveyed to the cleaning part through a rotary joint, a hollow shaft and a nozzle. The axial and radial movements are realized by using a feed cylinder and a rotary drive mechanism of the hollow shaft. Therefore, it is not necessary to completely remove the balls and cages of the bearings, and the oil stains in the bearing chambers can be cleaned, thus avoiding the defect of bearing damage caused by removing the rolling elements from the cages in the prior art. Since there is no need to disassemble the bearings, the loss of manpower and material resources is also saved. When the present invention performs reciprocating cleaning, a two-stage feed mechanism is used to achieve feeding, which not only meets the need for rapid feeding but also satisfies the need for fine feeding. The present invention also uses a rotary joint to introduce high-pressure water and hot air for drying, realizing the requirements of rapid cleaning, rapid drying and rapid resumption of production. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] The present invention will be further described below in conjunction with the drawings and embodiments.

[0026] Figure 1 is a schematic diagram of the overall structure of the present invention;

[0027] Figure 2 is a schematic diagram of the structure of the cleaning part;

[0028] Figure 3 is a schematic diagram of the structure of the rotary joint;

[0029] Figure 4 is a schematic diagram of the structure of the rotary drive mechanism of the hollow shaft;

[0030] Figure 5 is a schematic diagram of the structure of the cleaning assembly.

[0031] In the figure, each reference numeral represents: 1, bracket; 2, trolley; 3, feed cylinder; 4, hollow shaft; 5, rotary joint; 6, cleaning rod; 7, nozzle; 8, water inlet end; 9, track; 10, trolley lifting handwheel; 11, steel wire rope; 12, circulating water tank; 13, motor; 14, water supply pump; 15, water temperature heater; 16, filter screen; 17, water supply valve; 18, dryer; 19, staggered parallel partition; 20a, water discharge valve for the clean water area; 20b, water discharge valve for the turbid water area; 21, manhole access hole; 22, air inlet valve; 23, hook; 24, bearing box support; 25, hot air inlet; 26, suspension spring; 27, bushing; 28, worm; 29, turbine; 30, sliding hook key; 31, scale; 32, cleaning brush; 33, bearing chamber; 34, balls and cage. 5-1, housing; 5-2, rotor; 5-3, bearing; 5-4, water seal; 5-5a, bearing gland of the internal thread joint; 5-5b, bearing gland; 5-6, flange; 5-7, sealing ring; 5-8, water inlet; 5-9, air inlet; 5-10, pointer. DETAILED DESCRIPTION OF THE INVENTION

[0032] The cleaning method provided by the present invention is to use a rotating spray head 7 to extend into the interior of the bearing chamber 33 to be cleaned. The spray head 7 sprays high-pressure cleaning water to clean the oil stains on the bearing chamber 33, the ball bearings, and the ball cage 34. The high-pressure cleaning water inside the spray head 7 is introduced through the hollow shaft 4. The hollow shaft 4 is connected to the circulating water supply mechanism by a rotary joint 5. The other end of the rotary joint 5 is connected to the feed cylinder 3. The feed cylinder 3 sequentially pushes the rotary joint 5, the hollow shaft 3, and the spray head 7 to achieve axial feed, and complete the reciprocating flushing of the bearing chamber.

[0033] In the present invention, a hot air inlet 25 is provided in the rotary joint 5 to introduce high-temperature hot air. The high-temperature hot air sequentially passes through the hollow shaft 4 and the spray rod 6 and enters the spray head 7 to dry the bearing chamber 33.

[0034] In the cleaning method of the present invention, a feed trolley 2 is also provided. The trolley 2 is placed on the inclined track 9 through wheels and is manually driven by the trolley lifting winch 10 through the steel wire rope 11. The feeding action is completed by using the acting force generated by the inclination of the track 9, and the reset is completed by manual driving. The feed cylinder 3, the rotary joint 5, and the hollow shaft 4 are fixed on the bracket 1, and the bracket 1 is suspended on the trolley 2. The reciprocating movement of the trolley 2 drives the bracket 1 to make a reciprocating movement.

[0035] When the present invention is cleaning, a circulating water supply mechanism is provided. Among them, the circulating water tank 12 uses the staggered parallel partition plates 19 to divide the water storage container into a clean water area and a turbid water area. The turbid water area is open. The wastewater after cleaning the bearing box flows into the turbid water area, and after precipitation, it overflows into the clean water area again and is sent to the rotary joint 5 through the water supply pump 14.

[0036] See Figure 1 , Figure 1 is the overall structural schematic diagram of the present invention. The cleaning device of the present invention includes a cleaning part and a moving part. The moving part is used to push the cleaning mechanism to the designated working position, and the cleaning part is used to wash the bearing box with water and air dry it.

[0037] The cleaning section is mainly equipped with a circulating water supply mechanism, a drying mechanism, a bracket 1, a feeding cylinder 3, a rotary joint 5, a hollow shaft 4, a bushing 27, a rotary drive mechanism for the hollow shaft 4, and a cleaning assembly. Among them, the circulating water supply mechanism includes a circulating water tank 12, a water supply pump 14, a motor 13, a water temperature heater 15, a filter screen 16, and a water supply valve 17. The water supply pump 14 is connected to the motor 13 and is arranged on the circulating water tank 12. The water intake of the water supply pump 14 is connected to the circulating water tank 12, and its water outlet is successively connected to the water temperature heater 15, the water supply valve 17, and the rotary joint 5. High-pressure cleaning water is circulated through the water intake 16 and the water outlet of the water supply pump 14. The water temperature heater 15 is provided at the water outlet of the water supply pump 14 to control the outlet water temperature so that cleaning operations can be carried out even in cold environments. The water supply is controlled by the water supply valve 17. The filter screen 16 is arranged at the water intake of the water supply pump 14 to filter during the circulating water supply, preventing slag in the cleaning water from causing wear to the bearings in the bearing chamber 33 during cleaning.

[0038] The moving section includes a trolley 2, a track 9, a trolley lifting handwheel 10, and a suspension spring 23. Among them, the suspension spring 23 is arranged on the top of the trolley 2. The trolley 2 is arranged on the inclined track 9. The track 9 has an inclination angle of 5° - 10° with the horizontal line, and the inclined direction is such that one end close to the trolley lifting handwheel 10 is higher than the other end. By controlling the trolley lifting handwheel 10, the trolley 2 is pulled by a steel wire rope 11 to reach beside the bearing box, so as to achieve the purpose of the first-stage large-direction feeding.

[0039] The drying mechanism includes a dryer 18 and an intake valve 22. The dryer 18 is a high-power hot air supply device, and its hot air inlet 25 is connected to the rotary joint 5. After the cleaning is completed, the water supply valve 17 is closed, the dryer 18 and the intake valve 22 are opened, and the hot air sequentially passes through the rotary joint 5, the hollow shaft 4, the spray rod 6, and the nozzle 7 into the bearing chamber 33 to quickly air-dry the bearing chamber 33.

[0040] The internal of the circulating water tank 12 is provided with offset parallel partitions 19, which divide the water tank into a clean water area and a turbid water area. The turbid water area is open and a bearing box bracket 24 is placed, facilitating the cleaning of the bearing box and the recovery of the high-pressure cleaning water after cleaning. The recovered high-pressure cleaning water first enters the turbid water area for sedimentation, and the high-pressure cleaning water after sedimentation overflows into the clean water area through the gap of the offset parallel partition 19. The water intake of the water supply pump 14 is in the clean water area and is provided with a filter screen 16. The circulating water tank 12 is also provided with a turbid water area drain valve 20b and a clean water area drain valve 20a, which can change the water in their respective areas. The circulating water tank is also provided with a manhole entrance 21 to facilitate the maintenance or replacement of the filter screen 16.

[0041] The circulating water tank 12 also serves as the base of the entire device, and the components of the moving part and the cleaning part are all placed on the circulating water tank 12. The circulating water tank 12 is also provided with a safety cover, which is welded by thin steel plates, with installation handles on the outside and a plexiglass observation window installed in the center. During cleaning, the safety cover is covered on the outside of the cleaning object (bearing chamber) to prevent the splashing of the sprayed liquid and to observe the bearing cleaning situation closely.

[0042] See Figure 2 , Figure 2 For the overall structure diagram of the cleaning part, it includes a bracket 1, a feed cylinder 3, a rotary joint 5, a hollow shaft 4, a bushing 27, a rotary drive mechanism of the hollow shaft 4, and a cleaning assembly. The end of the piston rod of the feed cylinder 3 is connected to the rotary joint 5, the other end of the rotary joint 5 is connected to the hollow shaft 4, and the right end of the hollow shaft 4 is provided with a cleaning assembly. The cleaning assembly includes a cleaning rod 6, a nozzle 7, and a cleaning brush 32. The hollow shaft 4 is communicated with the cleaning rod 6, and a nozzle 7 is arranged at the end of the cleaning rod 6. The rotary joint 5 is provided with an inlet end 8 for high-pressure cleaning water. The high-pressure cleaning water sequentially passes through the inlet end 8, the hollow shaft 4, and the cleaning rod 6 and enters the nozzle 7, and is sprayed onto the inner wall of the bearing chamber 33 for flushing. The hollow shaft 4 is connected to the rotary drive mechanism of the hollow shaft 4 through the bushing 27, and the bracket 1 holds up the hollow shaft 4 through the bushing 27. The cleaning part is installed in the bracket 1.

[0043] The feed cylinder 3 is an ordinary single-piston rod cylinder, and the cylinder stroke is greater than or equal to the total depth of the bearing box. By operating the feed cylinder 3, the cleaning assembly can achieve the purpose of fine feeding. The inside of the hollow shaft 4 is hollow for passing water and hot air.

[0044] See Figure 3 , the rotary joint 5 is used to send high-pressure cleaning water or hot air through the rotating hollow shaft 4 to the cleaning surface. The rotary joint 5 includes a housing 5-1, a rotor 5-2, a bearing 5-3, a water seal 5-4, a bearing gland 5-5a of the internal thread joint, a bearing gland 5-5b, a flange 5-6, a sealing ring 5-7, a water inlet 5-8, an air inlet 5-9, and a pointer 5-10. The bearing gland 5-5a of the internal thread joint is used to connect with the piston rod of the cylinder, and the flange 5-6 is used to connect with the hollow shaft 4. A sealing ring 5-7 is also provided at the connection joint surface between the flange 5-6 and the hollow shaft 4. The water inlet 5-8 is connected to the water supply pump 14 for circulating water supply during cleaning, and the air inlet 5-9 is connected to the dryer 18 for air drying after cleaning. The lower arm of the bracket 1 is provided with a scale 31 in millimeters, and the pointer 5-10 is used to position the rotary joint 5 to clean bearing boxes of different sizes.

[0045] See Figure 4, the rotation drive mechanism of the hollow shaft is driven by a motor, which includes a turbine 29, a worm 28 and a sliding hook key 30. The turbine 29 is connected to the hollow shaft 4 by a sliding hook key 30. There are two sliding hook keys 30, upper and lower, fixing the turbine 29 and the hollow shaft 4. After the hollow shaft 4 is supported by a bushing 27, it can slide in the sliding keyway, and the sliding stroke is the same as the push rod stroke of the telescopic cylinder 3. When cleaning, remove the cleaning assembly, place the bearing box, first push the trolley to the first stage by the rocking wheel, and then push it to the second stage by the feed cylinder until the hollow shaft 4 is placed inside the bearing box, and then install the removed cleaning assembly. After the installation is completed, cleaning can be carried out.

[0046] See Figure 5 , a square hole is provided in the central part of the cleaning rod 6, and it is sleeved with the square head at the end of the hollow shaft 4, and is fixed and tightened by bolts and concave pressing plates. The inner hole of the hollow shaft 4 is communicated with the nozzle assembly. The bristles of the cleaning brush 32 are made of nylon with both elasticity and rigidity, and are not allowed to damage the rolling elements.

Claims

1. A cleaning method for removing oil stains from roll bearings, characterized in that: A rotating nozzle (7) extends into the bearing chamber (33) to be cleaned. The nozzle (7) sprays high-pressure cleaning water to clean the oil stains on the bearing chamber (33), the ball bearings and the cage (34). The high-pressure cleaning water in the nozzle (7) is introduced through a hollow shaft (4). The hollow shaft (4) is connected to a circulating water supply mechanism by a rotary joint (5). The other end of the rotary joint (5) is connected to a feed cylinder (3). The feed cylinder (3) sequentially pushes the rotary joint (5), the hollow shaft (4) and the nozzle (7) to achieve axial feed, and complete the reciprocating flushing of the bearing chamber (33). The high-pressure cleaning water is circulated through the circulating water supply mechanism. The circulating water supply mechanism includes a circulating water tank (12). A trolley (2) is provided. The trolley (2) is placed on the track (9) through wheels and is manually driven by a lifting winch (10) through a steel wire rope. The feeding action is completed by the acting force generated by the inclination of the track (9), and the reset is completed by manual driving. The feed cylinder (3), the rotary joint (5) and the hollow shaft (4) are fixed on a bracket (1). The bracket (1) is suspended on the trolley (2). The reciprocating movement of the trolley (2) drives the bracket (1) to make a reciprocating movement. A suspension spring (22) is provided at the top of the trolley (2). The bracket (1) is hung on the suspension spring (22) through a hook (23). The track (9) has an inclination angle of 5°-10° with the horizontal line, and the inclined direction is that one end close to the trolley lifting winch (10) is higher than the other end. A bearing box support (24) is provided in the turbid water area of the circulating water tank (12). The upper plane of the bearing box support (24) has an inclination angle of 5°-10° with the reference plane, and the inclined direction is the same as that of the track (9).

2. The cleaning method for removing oil stains from a roll bearing according to claim 1, wherein: A hot air inlet is provided in the rotary joint (5) to introduce high-temperature hot air. The high-temperature hot air sequentially passes through the hollow shaft (4) and the cleaning rod (6) and enters the nozzle (7) to dry the bearing chamber (33).

3. The cleaning method for removing oil stains from a roll bearing according to claim 1, characterized in that: A circulating water supply mechanism is provided. Among them, the circulating water tank (12) is provided with a clean water area and a turbid water area. The waste water after cleaning flows into the turbid water area, and after precipitation, it overflows into the clean water area again and is sent to the rotary joint (5) through a water supply pump (14).

4. A cleaning device for removing oil stains from roll bearings, characterized in that: It includes a cleaning part and a moving part. Among them, the moving part is used to push the cleaning mechanism to the designated working position, and the cleaning mechanism is used to clean the bearing chamber (33); the cleaning mechanism includes a bracket (1), a feed cylinder (3), a rotary joint (5), a hollow shaft (4), a bushing (27), a rotary drive mechanism for the hollow shaft (4), and a cleaning assembly; wherein, the piston rod of the feed cylinder (3) is connected to the rotary joint (5); the other end of the rotary joint (5) is connected to the hollow shaft (4), and the right end of the hollow shaft (4) is provided with a cleaning assembly, the cleaning assembly includes a cleaning rod (6) and a nozzle (7), the hollow shaft (4) is communicated with the cleaning rod (6), and the nozzle (7) is arranged at the end of the cleaning rod (6); the rotary joint (5) is provided with an inlet end (8) for high-pressure cleaning water, and the high-pressure cleaning water sequentially passes through the inlet end (8), the hollow shaft (4) and the cleaning rod (6) and enters the nozzle (7), and is sprayed onto the inner wall of the bearing chamber (33) for flushing; the hollow shaft (4) is driven and connected to the rotary drive mechanism of the hollow shaft (4) through the bushing (27); the cleaning part is installed in the bracket (1); the high-pressure cleaning water is circulated through a circulating water supply mechanism; the circulating water supply mechanism includes a circulating water tank (12). The moving part includes a trolley (2), a track (9), and a trolley lifting handwheel (10); wherein, the trolley (2) is arranged on the inclined track (9); the trolley is provided with a bracket (1); the cylinder body of the feed cylinder (3) is fixed on the bracket (1); the trolley lifting handwheel (10) is pulled by a steel wire rope (11), so that the moving part pushes the cleaning part to move back and forth in the bearing.

5. The cleaning device for removing oil stains from a roll bearing according to claim 4, wherein: The circulating water supply mechanism further includes a water supply pump (14), a motor (13), a water temperature heater (15), a filter screen (16), and a water supply valve (17); wherein, the water supply pump (14) and the motor (13) are arranged on the circulating water tank (12), the water intake of the water supply pump (14) is connected to the circulating water tank (12), and its water outlet is sequentially connected to the water temperature heater (15), the water supply valve (17), and the rotary joint (5); the filter screen (16) is arranged at the water intake of the water supply pump (14).

6. The cleaning device for removing oil stains from a roll bearing according to claim 5, wherein: A staggered parallel partition (19) and a drain valve (20) are arranged in the circulating water tank (12); wherein, the staggered parallel partition (19) is arranged in the circulating water tank (12), dividing the water tank into a clean water area and a turbid water area; the clean water area drain valve is arranged at one end of the clean water area; the turbid water area drain valve is arranged at one end of the turbid water area.

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