Rotary table bearing internally provided with oil cooling structure

Abstract

The invention relates to the technical field of bearings, in particular to a rotary table bearing internally provided with an oil cooling structure, which comprises a rotary table bearing and is characterized in that the rotary table bearing comprises an outer ring, and an inner ring is rotatably arranged in the outer ring; a rolling body used for supporting the outer ring and the inner ring and allowing the inner ring to rotate relative to the outer ring is arranged between the outer ring and the inner ring, a retainer used for keeping the position of the rolling body is movably connected to the rolling body, and an oil cooling channel used for the rotary table bearing is formed in the outer ring or the inner ring. An inlet and an outlet for cooling oil to enter the oil cooling channel are formed in the two ends of the oil cooling channel, a cooling pipeline is communicated with the position, located outside the rotary table bearing, between the inlet and the outlet of the oil cooling channel, an oil pump is communicated with the cooling pipeline, and a cooling assembly is arranged on the cooling pipeline. It is ensured that the bearing can still be effectively cooled under long-time and high-load operation, the service life of the rotary table bearing can be prolonged, and the maintenance cost and the replacement frequency are reduced.

Description

Technical Field

[0001] The present application relates to the technical field of bearings, and in particular to a turntable bearing with an internal oil cooling structure. Background Art

[0002] Turntable bearings are metal bearings that can simultaneously bear axial loads, radial loads, overturning moments and other comprehensive loads. They are widely used in various types of equipment under precise working adjustments. However, under high-intensity operating conditions, bearings tend to generate a lot of heat, causing the temperature to rise, which in turn affects the precision and life of the bearings.

[0003] There is a utility model patent entitled "A turntable bearing lubrication structure", with a publication (announcement) number of CN216447878U and a publication (announcement) date of 2022-05-06, which records a turntable bearing lubrication structure, including a shaft seat housing, a turntable shaft and an oil pump, the turntable bearing is installed in the shaft seat housing, the oil pump is installed on the outer wall of the shaft seat housing, an oil return filter is fixedly provided at the bottom of the inner cavity of the shaft seat housing, an oil filter is fixedly provided on the outer wall of the shaft seat housing, a cooling exhaust pipe is fixedly provided at the tail of the oil pump, the heat dissipation surface of the cooling exhaust pipe corresponds to the motor blades of the oil pump, the return oil filter is connected to the oil inlet of the oil filter through a pipeline, the oil outlet of the oil filter is connected to the oil inlet of the cooling exhaust pipe through a pipeline, the oil outlet of the cooling exhaust pipe is connected to the oil inlet of the oil pump through a pipeline, and the oil outlet of the oil pump extends to the lubrication point on the turntable bearing through the pipeline. The lubricating oil is filtered through the oil filter and then cooled through the cooling pipe. The motor fan blades at the rear of the oil pump cool the cooling pipe with air. The clean and low-temperature lubricating oil is lubricated to the turntable bearing through the oil pump. The structure is compact, the pipeline is short, and the filter element is easy to replace.

[0004] However, the cooling of the external cooling pipe is done by the fan blades of the oil pump motor. Since the oil pump also generates heat when it is working, the effect of using the fan blades of the oil pump to cool the oil pump itself and then using air cooling to cool the cooling pipe is not ideal. Especially when the turntable bearing works under high load and high intensity, the large amount of heat generated inside the turntable bearing cannot be dissipated in time, which affects the precision and life of the bearing after long-term use. Summary of the invention

[0005] In view of the shortcomings of the prior art, the purpose of this application is to provide a turntable bearing with an internal oil cooling structure, which is used to solve the problem mentioned in the prior background technology that the heat dissipation of the cooling pipe by using oil pump blades is not ideal, thereby affecting the precision and life of the bearing.

[0006] The above-mentioned purpose of this application is achieved through the following technical solutions: A turntable bearing with an internal oil cooling structure includes a turntable bearing, characterized in that the turntable bearing includes an outer ring, an inner ring is rotatably arranged inside the outer ring, a rolling body is arranged between the outer ring and the inner ring for supporting the outer ring and the inner ring and allowing the inner ring to rotate relative to the outer ring, a retaining frame is movably connected to the rolling body for maintaining the position of the rolling body, an oil cooling channel for the turntable bearing is opened on the outer ring or the inner ring, an inlet and an outlet for cooling oil to enter the oil cooling channel are opened at both ends of the oil cooling channel, a cooling pipeline is connected between the inlet and the outlet of the cooling channel and is located outside the turntable bearing, a main oil pump is connected to the cooling pipeline, and a cooling component is arranged on the cooling pipeline.

[0007] According to a further optimized solution, the cooling assembly includes a heat sink installed on a cooling pipeline, the heat sinks are provided in multiple groups and arranged in a linear array, and a cooling fan is installed on one side of the heat sink.

[0008] By adopting the above technical solution, when the turntable bearing is working, after the oil pump is started, the heat generated inside the turntable bearing will be brought to the cooling pipeline as the cooling oil circulates under the action of the oil pump, and then a cooling system is formed by the heat sink and the cooling fan installed on the cooling pipeline. After the cooling oil absorbs heat in the oil cooling channel, it flows through the heat sink through the cooling pipeline, and then the cooling fan blows the heat sink and the surface of the cooling pipeline to dissipate the heat into the air, which can further improve the cooling efficiency and ensure that the turntable bearing can still maintain a good working condition under long-term and high-load operation, which helps to extend the service life of the turntable bearing and reduce maintenance costs and replacement frequency.

[0009] According to a further optimized solution, the oil cooling channel is arranged around the center of the turntable bearing.

[0010] By adopting the above technical solution, the oil cooling channel is arranged around the center to ensure that when the cooling oil flows in the oil cooling channel, the cooling oil can flow evenly inside the turntable bearing, and can directly contact the key parts that generate heat inside the bearing, shortening the heat conduction distance, so that the heat can be transferred to the cooling oil and taken away more quickly, thereby achieving uniform heat dissipation of various parts of the turntable bearing and avoiding the occurrence of local overheating.

[0011] According to a further optimized solution, the oil cooling channel is spiral or annular.

[0012] By adopting the above technical solution, the spiral or annular design can increase the length of the cooling oil flow path in the cooling channel, so that the cooling oil has a longer contact time with the turntable bearing, thereby improving the efficiency of heat exchange. At the same time, by setting the cooling channel in a spiral or annular shape, the cooling blind area can be reduced, making the cooling effect more uniform and avoiding the occurrence of local overheating.

[0013] According to a further optimization scheme, the cooling pipeline is connected with a one-way valve, the other end of the one-way valve is connected with a supplementary oil pump, and the oil suction port of the supplementary oil pump is connected with an oil pot.

[0014] By adopting the above technical scheme, the one-way valve can prevent the cooling oil from flowing into the supplementary oil pump during the flow process, thereby preventing backflow. At the same time, when the cooling oil in the cooling system is reduced due to leakage or evaporation, the supplementary oil pump can draw cooling oil from the oil pot and replenish it into the cooling system, thereby ensuring that the cooling system always has sufficient cooling oil to circulate, thereby preventing poor cooling effect or overheating of the device due to insufficient cooling oil.

[0015] A further optimization scheme is that a cooling device for cooling the cooling pipeline is provided on the cooling pipeline, the cooling device includes cooling pipelines attached to both sides of the cooling pipeline, one end of the cooling pipeline is connected to a water tank, and the other end is connected to a water pump, the water pump is connected to the water tank, the water tank is a grid-like structure, and an air cooler is provided on one side of the water tank.

[0016] By adopting the above technical scheme, in order to ensure the cooling effect of the turntable bearing under high load and high strength, cooling pipelines, as well as water tanks and water pumps connected to the cooling pipelines, and air coolers are installed at both ends of the cooling pipelines. When the cooling effect does not meet the working requirements, the water pump and the air cooler are started, and the cooling water circulates in the cooling pipeline. The heat is transferred to the cooling water in the water tank through the heat exchange of the cooling pipeline that is fitted with the cooling pipeline. At the same time, the air cooler continuously blows cold air to reduce the temperature of the cooling water in the water tank, thereby maintaining the low temperature state of the cooling pipeline, which can further reduce the temperature of the cooling oil when it enters the turntable bearing and improve the cooling effect.

[0017] According to a further optimization scheme, a liquid level sensor is provided in the oil pot, and the liquid level sensor signal is connected to an alarm.

[0018] By adopting the above technical solution, when the cooling oil level drops to a preset safety threshold, the level sensor will send a signal, causing the alarm to sound an alarm, which helps the operator to promptly discover and deal with the problem of cooling oil shortage in the oil tank.

[0019] According to a further optimization scheme, the cooling pipeline is also connected to a cooling oil filter for filtering impurities in the cooling oil.

[0020] By adopting the above technical solution, impurities will gradually be mixed into the cooling oil during the circulation process. If they are not removed in time, they will cause wear to the components in the cooling system and even clog the pipeline, affecting the refrigeration effect. Therefore, a cooling oil filter is provided in the cooling pipeline to connect the oil. The cooling oil filter can effectively filter out impurities and ensure the cleanliness of the cooling oil, thereby protecting the normal operation of the entire cooling system.

[0021] According to a further optimization scheme, a flow sensor is also connected to the cooling pipeline, and the flow sensor signal is connected to an alarm.

[0022] By adopting the above technical solution, cooling oil is an important component in the cooling system, and its shortage will directly affect the heat dissipation effect of the turntable bearing. The flow sensor will check the flow of cooling oil in the cooling pipeline in real time. When the flow is abnormal, the flow sensor will trigger a signal to make the alarm sound, so that the operator can find the problem in time and deal with it in time.

[0023] According to a further optimized solution, sealing rings are provided at the connection points between the outlet and the inlet of the cooling pipeline and the oil cooling channel to prevent leakage of cooling oil.

[0024] By adopting the above technical solution, in order to prevent the leakage of cooling oil in the cooling system, a sealing ring is provided at the connection between the outlet and the inlet of the oil cooling pipeline and the cooling channel to prevent the leakage of cooling oil. The sealing ring can fit tightly at the connection between the outlet and the inlet of the cooling pipeline and the cooling channel, thereby forming an effective protection to prevent the cooling oil from leaking from the cooling system.

[0025] In summary, this application at least includes the following beneficial technical effects: By arranging the oil cooling channel, cooling pipeline, oil pump, heat sink and cooling fan on the inner ring or outer ring of the turntable bearing, when the turntable bearing is working, after starting the main oil pump, the heat generated inside the turntable bearing will be brought to the cooling pipeline as the cooling oil circulates under the action of the main oil pump, and then a cooling system is formed by the heat sink and cooling fan installed on the cooling pipeline. After the cooling oil absorbs heat in the oil cooling channel, it flows through the heat sink through the cooling pipeline, and then the cooling fan blows the heat sink and the surface of the cooling pipeline to dissipate the heat into the air, which can further improve the cooling efficiency and ensure that the turntable bearing can still maintain a good working condition under long-term and high-load operation, which helps to extend the service life of the turntable bearing and reduce maintenance costs and replacement frequency.

[0026] The oil cooling channel is arranged around the center to ensure that the cooling oil flows evenly inside the turntable bearing when it flows in the oil cooling channel, and can directly contact the key parts of the bearing that generate heat, shortening the heat conduction distance, so that the heat can be transferred to the cooling oil and taken away more quickly, thereby achieving uniform heat dissipation of various parts of the turntable bearing and avoiding the occurrence of local overheating.

[0027] The spiral or annular design can increase the length of the cooling oil flow path in the cooling channel, allowing the cooling oil to have a longer contact time with the turntable bearing, thereby improving the efficiency of heat exchange. At the same time, by setting up a spiral or annular cooling channel, the cooling blind area can be reduced, making the cooling effect more uniform and avoiding local overheating.

[0028] The one-way valve can prevent the cooling oil from flowing into the supplementary oil pump during the flow process, thereby preventing backflow. At the same time, when the cooling oil in the cooling system is reduced due to leakage or evaporation, the supplementary oil pump can draw cooling oil from the oil pot and replenish it into the cooling system, thereby ensuring that the cooling system always has enough cooling oil to circulate, preventing poor cooling effect or overheating of the device due to insufficient cooling oil.

[0029] By installing cooling pipelines at both ends of the cooling pipeline, as well as a water tank, a water pump, and an air cooler connected to the cooling pipeline, when the cooling effect does not meet the working requirements, start the water pump and the air cooler, and the cooling water circulates in the cooling pipeline. The heat is transferred to the cooling water in the water tank through the heat exchange of the cooling pipeline that is in contact with the cooling pipeline. At the same time, the air cooler continuously blows cold air to reduce the temperature of the cooling water in the water tank, thereby maintaining the low temperature state of the cooling pipeline, which can further reduce the temperature of the cooling oil when it enters the turntable bearing and improve the cooling effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 is a cross-sectional view of a turntable bearing of an embodiment; Figure 2 It is a schematic diagram of the overall structure in the embodiment.

[0031] Figure numerals: 1. oil cooling channel; 2. cooling pipeline; 3. cooling assembly; 30. heat sink; 31. cooling fan; 4. one-way valve; 5. oil replenishing pump; 6. oil pot; 7. cooling device; 70. cooling pipeline; 71. water tank; 72. water pump; 73. air cooler; 8. cooling oil filter; 9. flow sensor; 10. main oil pump. DETAILED DESCRIPTION

[0032] The present application is further described in detail below in conjunction with the accompanying drawings.

[0033] In the description of the present application, it should be noted that the orientation or position relationship indicated by the terms "center", "up", "down", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, which is only for the convenience of describing the present invention and simplifying the description, and does not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the application.

[0034] In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For those skilled in the art, the specific meanings of the above terms in this application can be understood according to specific circumstances.

[0035] Example, see Figure 1 and Figure 2 A turntable bearing with an internal oil cooling structure includes a turntable bearing, the turntable bearing includes an outer ring, an inner ring is rotatably arranged inside the outer ring, a rolling body is arranged between the outer ring and the inner ring for supporting the outer ring and the inner ring and allowing the inner ring to rotate relative to the outer ring, a retaining frame is movably connected to the rolling body for maintaining the position of the rolling body, an oil cooling channel 1 for cooling the turntable bearing is opened on the outer ring or the inner ring, an inlet and an outlet for cooling oil to enter the oil cooling channel 1 are opened at both ends of the oil cooling channel 1, a cooling pipeline 2 is connected between the inlet and the outlet of the oil cooling channel 1 and is located outside the turntable bearing, a main oil pump 10 is connected to the cooling pipeline 2, and a cooling component 3 is arranged on the cooling pipeline 2.

[0036] Specifically, the cooling assembly 3 includes a heat sink 30 installed on the cooling pipeline 2 . The heat sink 30 is provided in multiple groups and arranged in a linear array. A cooling fan 31 is installed on one side of the heat sink 30 .

[0037] When the turntable bearing is working, after the main oil pump 10 is started, the heat generated inside the turntable bearing will be brought to the cooling pipeline 2 as the cooling oil circulates under the action of the main oil pump 10, and then a cooling system is formed through the heat sink 30 and the cooling fan 31 installed on the cooling pipeline 2. After the cooling oil absorbs heat in the oil cooling channel 1, it flows through the heat sink 30 through the cooling pipeline 2, and then the cooling fan 31 blows the heat sink 30 and the surface of the cooling pipeline 2 to dissipate the heat into the air, which can further improve the cooling efficiency and ensure that the turntable bearing can still maintain a good working condition under long-term and high-load operation, which helps to extend the service life of the turntable bearing and reduce maintenance costs and replacement frequency.

[0038] In the embodiment of the present disclosure, the oil cooling channel 1 is arranged around the center of the turntable bearing. The arrangement of the oil cooling channel 1 around the center can ensure that the cooling oil flows evenly inside the turntable bearing when flowing in the oil cooling channel 1, and can directly contact the key parts that generate heat inside the bearing, shortening the heat conduction distance, so that the heat can be transferred to the cooling oil and taken away more quickly, thereby achieving uniform heat dissipation of various parts of the turntable bearing and avoiding the occurrence of local overheating.

[0039] In the embodiment of the present disclosure, the oil cooling channel 1 is spiral or annular. The spiral or annular design can increase the length of the flow path of the cooling oil in the oil cooling channel 1, so that the cooling oil has a longer contact time with the turntable bearing, thereby improving the efficiency of heat exchange. At the same time, by setting the cooling channel into a spiral or annular shape, the cooling blind area can be reduced, making the cooling effect more uniform and avoiding the occurrence of local overheating.

[0040] In the embodiment of the present disclosure, a one-way valve 4 is connected to the cooling pipeline 2, and the other end of the one-way valve 4 is connected to a supplementary oil pump 5, and the oil suction port of the supplementary oil pump 5 is connected to an oil pot 6. The one-way valve 4 can prevent the cooling oil from flowing into the supplementary oil pump 5 during the flow process, and prevent the occurrence of backflow. At the same time, when the cooling oil of the cooling system is reduced due to leakage or evaporation, the supplementary oil pump 5 can extract the cooling oil from the oil pot 6 and replenish it to the cooling system, thereby ensuring that the cooling system always has enough cooling oil for circulation, and preventing poor cooling effect or overheating of the device due to insufficient cooling oil.

[0041] In the embodiment of the present disclosure, in order to ensure the cooling effect of the turntable bearing under high load and high strength, a cooling device 7 for cooling the cooling pipe 2 is provided on the cooling pipe 2, and the cooling device 7 includes a cooling pipe 70 attached to both sides of the cooling pipe 2, one end of the cooling pipe 70 is connected to a water tank 71, and the other end is connected to a water pump 72, the water pump 72 is connected to the water tank 71, the water tank 71 is a grid-like structure, and a cooling fan 73 is provided on one side of the water tank 71. When the cooling effect does not meet the working requirements, the water pump 72 and the cooling fan 73 are started, and the cooling water circulates in the cooling pipe 70, and the heat is transferred to the cooling water in the water tank 71 through the heat exchange of the cooling pipe 70 attached to the cooling pipe 2, and the cooling fan 73 continuously blows cold air to reduce the temperature of the cooling water in the water tank 71, thereby maintaining the low temperature state of the cooling pipe 70, which can further reduce the temperature of the cooling oil when it enters the inside of the turntable bearing, and improve the cooling effect.

[0042] In the embodiment of the present disclosure, a liquid level sensor is provided in the oil pot 6, and the liquid level sensor signal is connected to an alarm. When the cooling oil level drops to a preset safety threshold, the liquid level sensor will send a signal, causing the alarm to send an alarm, which helps the operator to promptly discover and deal with the problem of cooling oil shortage in the oil pot 6.

[0043] In the embodiment of the present disclosure, the cooling pipeline 2 is also connected to a cooling oil filter 8 for filtering impurities in the cooling oil.

[0044] During the circulation process, the cooling oil will gradually be mixed with impurities, such as metal debris, dirt, water, etc. If it is not removed in time, it will cause wear to the components in the cooling system, and even block the pipeline, affecting the cooling effect. Therefore, a cooling oil filter 8 is provided on the cooling pipeline 2 to connect the oil. The cooling oil filter 8 can effectively filter out impurities, ensure the cleanliness of the cooling oil, and thus protect the normal operation of the entire cooling system.

[0045] In the embodiment of the present disclosure, a flow sensor 9 is also connected to the cooling pipeline 2, and the signal of the flow sensor 9 is connected to the alarm. Cooling oil is an important component in the cooling system, and its shortage will directly affect the heat dissipation effect of the turntable bearing. The flow sensor 9 will check the flow of the cooling oil in the cooling pipeline 2 in real time. When the flow is abnormal, the flow sensor 9 will trigger a signal to make the alarm sound, so that the operator can find the problem in time and deal with it in time.

[0046] In the embodiment of the present disclosure, a sealing ring is provided at the connection between the outlet and the inlet of the cooling pipeline 2 and the oil cooling channel 1 to prevent leakage of cooling oil. In order to prevent leakage of cooling oil in the cooling system, a sealing ring is provided at the connection between the outlet and the inlet of the cooling pipeline 2 and the oil cooling channel 1 to prevent leakage of cooling oil. The sealing ring can fit tightly at the connection between the outlet and the inlet of the cooling pipeline 2 and the oil cooling channel 1, thereby forming effective protection to prevent leakage of cooling oil from the cooling system.

[0047] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A turntable bearing with an oil cooling structure arranged inside, comprising a turntable bearing, characterized in that: The turntable bearing comprises an outer ring, an inner ring is rotatably arranged inside the outer ring, a rolling body is arranged between the outer ring and the inner ring for supporting the outer ring and the inner ring and allowing the inner ring to rotate relative to the outer ring, a retaining frame is movably connected to the rolling body for maintaining the position of the rolling body, an oil cooling channel (1) for the turntable bearing is provided on the outer ring or the inner ring, an inlet and an outlet for cooling oil to enter the oil cooling channel (1) are provided at both ends of the oil cooling channel (1), a cooling pipeline (2) is connected between the inlet and the outlet of the oil cooling channel (1) and is located outside the turntable bearing, the cooling pipeline (2) is connected to a main oil pump (10), and a cooling component (3) is arranged on the cooling pipeline (2).

2. The turntable bearing with an internal oil cooling structure according to claim 1, characterized in that: The cooling assembly (3) comprises a heat sink (30) mounted on a cooling pipeline (2); the heat sink (30) is provided in multiple groups and arranged in a linear array; a cooling fan (31) is installed on one side of the heat sink (30).

3. The turntable bearing with an internal oil cooling structure according to claim 2, characterized in that: The oil cooling channel (1) is arranged around the center of the turntable bearing.

4. The turntable bearing with an internal oil cooling structure according to claim 2, characterized in that: The oil cooling channel (1) is spiral or annular.

5. The turntable bearing with an internal oil cooling structure according to claim 2, characterized in that: The cooling pipeline (2) is connected to a one-way valve (4), the other end of the one-way valve (4) is connected to an oil replenishment pump (5), and the oil suction port of the oil replenishment pump (5) is connected to an oil pot (6).

6. The turntable bearing with an internal oil cooling structure according to claim 2, characterized in that: The cooling pipeline (2) is provided with a cooling device (7) for cooling the cooling pipeline (2), the cooling device (7) comprising cooling pipelines (70) attached to both sides of the cooling pipeline (2), one end of the cooling pipeline (70) being connected to a water tank (71), and the other end being connected to a water pump (72), the water pump (72) being connected to the water tank (71), the water tank (71) being a grid-like structure, and a cooling fan (73) being provided on one side of the water tank (71).

7. The turntable bearing with an internal oil cooling structure according to claim 5, characterized in that: A liquid level sensor is arranged in the oil pot (6), and the liquid level sensor signal is connected to an alarm.

8. The turntable bearing with an internal oil cooling structure according to claim 5, characterized in that: The cooling pipeline (2) is also connected to a cooling oil filter (8) for filtering impurities in the cooling oil.

9. The turntable bearing with an internal oil cooling structure according to claim 8, characterized in that: The cooling pipeline (2) is also connected to a flow sensor (9), and a signal of the flow sensor (9) is connected to an alarm.

10. The turntable bearing with an internal oil cooling structure according to claim 5, characterized in that: The connection between the outlet and the inlet of the cooling pipeline (2) and the oil cooling channel (1) is provided with a sealing ring to prevent leakage of cooling oil.

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