Cooling circulation structure of bucket-wheel driving speed reducer

Abstract

The utility model relates to the technical field of speed reducer lubricating and cooling circulation systems, in particular to a bucket-wheel drive speed reducer cooling circulation structure which comprises an oil pump, a motor, an oil suction pipe and an oil outlet pipe. The outlet end of the oil suction pipe is connected with the inlet end of the oil pump, the inlet end of the oil outlet pipe is connected with the outlet end of the oil pump, the outlet end of the oil outlet pipe is respectively connected with a lubricating part in the speed reducer through an oil outlet branch pipe group, and the lubricating part comprises two supporting bearings of a high-speed shaft, two parallel shaft bearings and a bevel gear meshing part. The lubricating device has the advantages that lubrication and cooling of key parts are guaranteed, and the service life of the bearing and the gear is prolonged.

Description

Technical Field

[0001] The present application relates to the technical field of a reducer lubrication and cooling circulation system, and in particular to a bucket wheel driven reducer cooling circulation structure. Background Art

[0002] Bucket-wheel reducers are widely used in industries such as mining, ports, and building materials, playing a particularly important role in material conveying systems. This type of equipment typically utilizes a right-angle shaft drive system, with bevel gear drives being widely used due to their compact structure and high transmission efficiency. However, as industrial environments become increasingly complex, the requirements for the reliability and durability of bucket-wheel reducers are also increasing. Therefore, ensuring the proper operation of reducers under harsh operating conditions such as high temperatures and heavy loads has become a key concern for technicians in this field.

[0003] To ensure proper operation of bucket wheel reducers, existing technologies typically employ a cooling circulation system for lubrication and heat dissipation. This commonly involves using an oil pump and motor-driven circulation system to deliver lubricating oil into the reducer via suction and discharge pipes. The lubricating oil is then distributed to various lubrication points via a set of oil outlet pipes. Filters are also incorporated into the system to maintain the cleanliness of the lubricating oil. While these measures can meet basic requirements to a certain extent, they still have many shortcomings in practical applications.

[0004] Existing cooling circulation systems suffer from low flow rates, narrow internal lubrication channels, and a limited number of lubrication points. Furthermore, the system's monitoring features are limited, typically limited to flow rate monitoring. Real-time monitoring of pressure and filter status is lacking, making it difficult to promptly identify and address potential issues. These issues not only impact the proper operation of the bucket wheel reducer but can also lead to bearing lubrication failure, shorten the effective working life of gears, and ultimately cause premature equipment failure. Utility Model Content

[0005] In order to increase the number of lubrication points, the present application provides a bucket wheel drive reducer cooling circulation structure.

[0006] The present application provides a bucket wheel drive reducer cooling cycle structure adopting the following technical solutions:

[0007] A bucket wheel driven reducer cooling circulation structure includes an oil pump, a motor, an oil suction pipe and an oil outlet pipe. The motor is driven and connected to the oil pump, the inlet end of the oil suction pipe is connected to the circulating oil pipe, the outlet end of the oil suction pipe is connected to the inlet end of the oil pump, the inlet end of the oil outlet pipe is connected to the outlet end of the oil pump, and the outlet end of the oil outlet pipe is connected to the lubrication part in the reducer through an oil outlet branch pipe group. The lubrication part includes two support bearings of the high-speed shaft, two parallel shaft bearings and the bevel gear meshing part.

[0008] By adopting this technical solution, efficient circulation and filtration of the lubricating oil within the bucket wheel drive reducer are achieved, ensuring lubricating oil cleanliness and fluidity, thereby effectively reducing the operating temperature of the bearings and extending their service life. Furthermore, by optimizing the internal lubricating oil pathways and adding multiple lubrication and cooling points, the operating efficiency and stability of the entire machine are further improved, reducing mechanical wear and failure rates caused by insufficient lubrication, and significantly enhancing the overall performance and reliability of the equipment.

[0009] Optionally, it also includes an oil tank, a tee is provided on the circulating oil pipe, the oil suction pipe is connected to the circulating oil pipe through the tee, the other end of the tee is connected to the oil tank through the oil supply pipe, a breathing valve is provided on the oil tank, an oil outlet switching valve is provided on the oil outlet pipe, and an oil supply switching valve is provided on the oil supply pipe.

[0010] By adopting this technical solution, adding an oil tank and corresponding piping connections, the cooling circulation system not only effectively recycles lubricating oil but also replenishes it when it's running low, ensuring the system is always optimally lubricated. The breather valve on the oil tank balances the air pressure inside and outside the tank, preventing oil splashing or air inhalation caused by pressure fluctuations, further enhancing system stability and safety. The oil outlet and supply switching valves allow the system to flexibly adjust the oil flow according to actual needs, improving the system's adaptability and ease of maintenance.

[0011] Optionally, the oil outlet branch pipe group includes a bearing lubrication branch pipe, a bevel gear meshing lubrication branch pipe and a parallel shaft lubrication branch pipe. The bearing lubrication branch pipe is connected to the internal lubrication oil circuit of the bearing seat of the reducer, the bevel gear meshing lubrication branch pipe is connected to the bevel gear chamber of the reducer, and the parallel shaft lubrication branch pipe is connected to the parallel shaft end cover of the reducer.

[0012] By implementing this technical solution, multiple new lubrication and cooling points have been added, ensuring effective lubrication and cooling of the high-speed shaft's two support bearings, the bevel gear meshing area, and the parallel shaft bearings. This not only improves the performance and lifespan of these key components, but also effectively lowers the overall operating temperature, reduces the frequency of lubricant changes, and thus reduces operating costs. Furthermore, these additional lubrication and cooling points significantly reduce equipment failures caused by poor lubrication, thereby improving equipment reliability and production efficiency.

[0013] Optionally, a filter is provided on the oil outlet pipe.

[0014] By adopting the above technical solution, the filter can effectively remove impurities in the lubricating oil, improve the cleanliness of the lubricating oil, and thus extend the service life of the bearings and gears.

[0015] Optionally, a pressure difference sensor is provided at the filter, and the pressure difference sensor is used to detect the pressure difference before and after the filter.

[0016] By adopting the above technical solution, the newly added differential pressure sensor can monitor the pressure difference before and after the filter in real time, effectively judge the working status of the filter, prevent abnormal system pressure due to filter element blockage, ensure the cleanliness of the lubricating oil, thereby extending the service life of bearings and gears. At the same time, it can also eliminate the abnormal pressure alarm caused by filter element blockage in the system, thereby improving system reliability.

[0017] Optionally, a flow switch is provided on the oil outlet pipe, and the flow switch is provided upstream of the filter.

[0018] By adopting the above technical solution, the flow switch can monitor the flow of lubricating oil in real time, ensure the normal flow of the system, and promptly detect and eliminate abnormal flow problems, thereby effectively ensuring the reliability of the entire cooling circulation system.

[0019] Optionally, a pressure switch is provided on the oil outlet pipe, and the pressure switch is provided downstream of the filter.

[0020] By adopting this technical solution, a pressure switch located downstream of the filter monitors the oil pressure downstream of the filter in real time, ensuring that system pressure remains within the normal range. If system pressure becomes abnormal, the pressure switch references the reading of the differential pressure sensor and issues an alarm, prompting operators to check for blockages or other faults, thus preventing equipment damage or lubrication failure caused by abnormal pressure.

[0021] In summary, this application includes at least one of the following beneficial technical effects:

[0022] 1. Multiple lubrication and cooling points have been added, especially in the middle of the two support bearings of the high-speed shaft, the intermediate parallel shaft bearing, and the bevel gear meshing point, which effectively ensures the lubrication and cooling of key parts and extends the service life of bearings and gears;

[0023] 2. The pressure switch and differential pressure sensor enable real-time monitoring of oil circuit pressure and filter status, enabling timely detection and resolution of potential problems. This improves system reliability, reduces the downtime and troubleshooting rate of the bucket wheel reducer, and improves equipment operating efficiency.

[0024] 3. The flow switch can monitor the flow of lubricating oil in real time, ensure the normal flow of the system, and promptly detect and eliminate abnormal flow problems. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 It is a structural schematic diagram of the cooling circulation structure of the bucket wheel drive reducer provided in an embodiment of the present application.

[0026] Figure 2 This is a structural schematic diagram from another angle of the cooling cycle structure of the bucket wheel drive reducer provided in an embodiment of the present application.

[0027] Figure 3 It is a schematic diagram of the lubricating oil circuit inside the bearing seat in the cooling circulation structure of the bucket wheel drive reducer provided in an embodiment of the present application.

[0028] Explanation of the accompanying drawings: 1-oil pump; 2-motor; 3-oil suction pipe; 4-oil outlet pipe; 5-reducer; 501-first support bearing; 502-second support bearing; 503-bearing seat; 504-high-speed shaft; 6-circulating oil pipe; 7-oil outlet branch pipe group; 701-bearing lubrication branch pipe; 702-bevel gear meshing lubrication branch pipe; 703-parallel shaft lubrication branch pipe; 8-first bearing lubrication oil circuit; 9-second bearing lubrication oil circuit; 10-lubrication cooling point between bearings; 11-filter; 12-differential pressure sensor; 13-flow switch; 14-pressure switch. DETAILED DESCRIPTION

[0029] The following is combined with Figure 1-3 This application is described in further detail.

[0030] An embodiment of the present application discloses a cooling circulation structure for a bucket wheel drive reducer.

[0031] The bucket wheel drive reducer cooling circulation structure is used to circulate and filter the lubricating oil in the bucket wheel drive reducer (hereinafter referred to as reducer 5). The reducer 5 includes two parallel shafts and a high-speed shaft 504. A circulating oil pipe 6 is provided at the bottom of the reducer 5. The high-speed shaft 504 is meshed with one of the two parallel shafts through a bevel gear. The high-speed shaft 504 of the reducer 5 is rotatably connected to the bearing seat 503 through a first support bearing 501 and a second support bearing 502, and the first support bearing 501 is located on the side of the second support bearing 502 away from the bevel gear. In the related art, a first bearing lubricating oil circuit 8 is provided in the bearing seat 503. The oil circuit has an oil inlet and two oil outlets. The oil inlet of the first bearing lubricating oil circuit 8 is connected to the bearing lubricating branch pipe 701, and the two oil outlets of the first bearing lubricating oil circuit 8 are respectively connected to the side of the first support bearing 501 in the bearing seat 503 away from the second support bearing 502 and the side of the first support bearing 501 close to the support bearing.

[0032] like Figure 1-Figure 2As shown, the cooling circulation structure of the bucket wheel drive reducer includes an oil pump 1, a motor 2, an oil suction pipe 3, and an oil outlet pipe 4. The motor 2 is driven and connected to the oil pump 1. The inlet end of the oil suction pipe 3 is connected to the circulating oil pipe 6. The outlet end of the oil suction pipe 3 is connected to the inlet end of the oil pump 1. The inlet end of the oil outlet pipe 4 is connected to the outlet end of the oil pump 1. The outlet end of the oil outlet pipe 4 is connected to the lubrication part in the reducer 5 through the oil outlet branch pipe group 7. The use of the motor 2 and the oil pump 1 enables efficient circulation and filtration of the lubricating oil in the reducer 5, achieving the effect of optimizing bearing lubrication and cooling, reducing bearing operating temperature, and extending bearing service life.

[0033] Specifically, the oil pump 1 includes a pump body and an impeller. The pump body is made of high-strength cast iron material and has good corrosion resistance and wear resistance. The impeller is made of stainless steel material and has high strength and corrosion resistance. The working principle of the oil pump 1 is to drive the impeller to rotate through the motor 2, suck the oil into the pump body through the oil suction pipe 3 and transport it to the reducer 5 through the oil outlet pipe 4. The motor 2 can adopt a high-efficiency DC motor, which has a larger rated power than the motor in the related art and can operate stably under high load conditions. The motor 2 and the oil pump 1 are connected by a coupling, and the coupling can adopt an elastic coupling, which can effectively absorb vibration and reduce noise.

[0034] like Figure 1-Figure 2 As shown, the inlet end of the oil suction pipe 3 is connected to the circulating oil pipe 6, and the outlet end of the oil outlet pipe 4 is connected to the lubrication system inside the reducer 5 through the oil outlet branch pipe assembly 7, forming a closed circulation system. The oil outlet branch pipe assembly 7 includes a bearing lubrication branch pipe 701, a bevel gear meshing lubrication branch pipe 702, and a parallel shaft lubrication branch pipe 703. These are respectively connected to the lubrication oil circuit inside the bearing seat 503 of the reducer 5, the bevel gear chamber, and the parallel shaft end cover, ensuring that each lubrication point is fully lubricated.

[0035] like Figure 3 As shown, the lubricating oil circuit within the bearing seat 503 includes the first bearing lubricating oil circuit 8 in the related art. This application increases the diameter of the first bearing lubricating oil circuit 8, thereby reducing the flow resistance of the system. Furthermore, a second bearing lubricating oil circuit 9 is added within the bearing seat 503. The second bearing lubricating oil circuit 9 encompasses the gap between the first support bearing 501 and the bearing seat 503. This second bearing lubricating oil circuit 9 provides additional inter-bearing lubrication cooling points 10, effectively ensuring cooling and lubrication of the two support bearings at the high-speed input end.

[0036] By increasing the flow rate of the oil pump 1 and the power of the motor 2, enlarging the diameters of the oil suction pipe 3 and the oil outlet pipe 4, increasing the number of lubrication points, and optimizing the internal lubrication oil circuit of the bearing seat 503, the problems of low flow rate, few lubrication points, and high flow resistance in the existing technology are effectively solved.

[0037] In addition, this embodiment further includes an oil tank (not shown in the figure), a tee is provided on the circulating oil pipe 6, the oil suction pipe 3 is connected to the circulating oil pipe 6 through the tee, the other end of the tee is connected to the oil tank through the oil supply pipe, a breathing valve is provided on the oil tank, an oil outlet switching valve is provided on the oil outlet pipe 4, and an oil supply switching valve is provided on the oil supply pipe.

[0038] Specifically, the oil tank can be made of stainless steel material, which has good corrosion resistance and durability. The oil tank can store enough lubricating oil to ensure the lubrication needs for long-term operation. The breathing valve adopts an automatic regulating breathing valve, which can automatically open and balance the air pressure when the air pressure inside and outside the oil tank is unbalanced. The oil outlet switching valve and the oil supply switching valve adopt solenoid valves, which can be remotely controlled and easy to operate. The oil outlet switching valve is arranged on the oil outlet pipe 4, and the oil supply switching valve is arranged on the oil supply pipe. By switching the valve open and closed, the oil circuit can be switched when needed to realize the circulation of lubricating liquid between the oil tank and the reducer 5.

[0039] The addition of an oil tank and corresponding piping connections allows the cooling circulation system to not only effectively recycle lubricating oil but also replenish it when it's running low, ensuring optimal lubrication at all times. A breather valve on the oil tank balances the air pressure inside and outside the tank, preventing oil splashing or air inhalation caused by pressure fluctuations, further enhancing system stability and safety. The oil outlet and supply switching valves allow the system to flexibly adjust oil flow based on actual needs, improving system adaptability and ease of maintenance.

[0040] like Figure 1-Figure 2 As shown, in order to ensure the quality of the lubricating oil, a filter 11 can be provided on the oil outlet pipe 4, a pressure differential sensor 12 is provided at the filter 11, a flow switch 13 and a pressure switch 14 are provided on the oil outlet pipe 4, the flow switch 13 is provided upstream of the filter 11, and the pressure switch 14 is provided downstream of the filter 11.

[0041] Specifically, the filter 11 uses a high-precision filter element, which can effectively remove impurities in the lubricating oil and maintain the cleanliness of the lubricating oil. The differential pressure sensor 12 can monitor the pressure difference before and after the filter 11 in real time, and promptly detect abnormal system pressure caused by filter element blockage, ensure the cleanliness of the lubricating oil, thereby extending the service life of the bearings and gears. At the same time, it can also eliminate the abnormal pressure alarm caused by filter element blockage in the system and improve the reliability of the system. The flow switch 13 can monitor the flow of the lubricating oil in real time, ensure that the system flow is normal, and promptly detect and eliminate abnormal flow problems. The pressure switch 14 located downstream of the filter 11 can monitor the oil circuit pressure downstream of the filter 11 in real time to ensure that the system pressure is within the normal range. When the system pressure is abnormal, the pressure switch 14 will refer to the reading of the differential pressure sensor 12 and issue an alarm in time, prompting the operator to check whether there is blockage or other faults, thereby avoiding equipment damage or lubrication failure due to abnormal pressure.

[0042] The implementation principle of the cooling circulation structure of a bucket wheel drive reducer in an embodiment of the present application is as follows: through the comprehensive application of the filter 11, the pressure difference sensor 12, the flow switch 13 and the pressure switch 14, the system can realize real-time monitoring and management of the quality of the lubricating oil. When the lubricating oil passes through the filter 11, the impurities are effectively removed, ensuring the cleanliness of the lubricating oil, thereby reducing the wear on the bearings and gears and extending the service life of the equipment. The use of the pressure difference sensor 12 can timely detect the blockage of the filter element, avoid the abnormal system pressure caused by the blockage of the filter element, and ensure the stable operation of the system. The setting of the flow switch 13 and the pressure switch 14 ensures the normal flow and pressure of the lubricating oil, timely detects and eliminates the problems of abnormal flow and pressure, and further improves the reliability and safety of the system. Finally, the lubricating oil that meets the requirements comes to the lubrication part in the reducer 5 through the oil outlet branch pipe group 7 to achieve lubrication of the reducer 5.

[0043] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A bucket wheel driven reducer cooling circulation structure for circulating and filtering lubricating oil in a reducer (5), wherein a circulating oil pipe (6) is provided at the bottom of the reducer (5), characterized in that: include: An oil pump (1), a motor (2), an oil suction pipe (3) and an oil outlet pipe (4), wherein the motor (2) is connected to the oil pump (1) by driving, the inlet end of the oil suction pipe (3) is connected to the circulating oil pipe (6), the outlet end of the oil suction pipe (3) is connected to the inlet end of the oil pump (1), the inlet end of the oil outlet pipe (4) is connected to the outlet end of the oil pump (1), and the outlet end of the oil outlet pipe (4) is connected to the lubrication part in the reducer (5) through an oil outlet branch pipe group (7), wherein the lubrication part includes two support bearings of the high-speed shaft (504), two parallel shaft bearings and an umbrella gear meshing part.

2. The bucket wheel drive reducer cooling circulation structure according to claim 1, characterized in that: The oil tank is also included. A tee is provided on the circulating oil pipe (6). The oil suction pipe (3) is connected to the circulating oil pipe (6) through the tee. The other end of the tee is connected to the oil tank through an oil supply pipe. A breathing valve is provided on the oil tank. An oil outlet switching valve is provided on the oil outlet pipe (4). An oil supply switching valve is provided on the oil supply pipe.

3. The bucket wheel drive reducer cooling circulation structure according to claim 1, characterized in that: The oil outlet branch pipe group (7) comprises a bearing lubrication branch pipe (701), a bevel gear meshing lubrication branch pipe (702) and a parallel shaft lubrication branch pipe (703); the bearing lubrication branch pipe (701) is connected to the internal lubrication oil circuit of the bearing seat (503) of the reducer (5); the bevel gear meshing lubrication branch pipe (702) is connected to the bevel gear chamber of the reducer (5); and the parallel shaft lubrication branch pipe (703) is connected to the parallel shaft end cover of the reducer (5).

4. The bucket wheel drive reducer cooling circulation structure according to claim 1, characterized in that: The oil outlet pipe (4) is provided with a filter (11).

5. The bucket wheel drive reducer cooling circulation structure according to claim 4, characterized in that: A differential pressure sensor (12) is provided at the filter (11), and the differential pressure sensor (12) is used to detect the pressure difference before and after the filter (11).

6. The bucket wheel drive reducer cooling circulation structure according to claim 4, characterized in that: The oil outlet pipe (4) is provided with a flow switch (13), and the flow switch (13) is arranged upstream of the filter (11).

7. The bucket wheel drive reducer cooling circulation structure according to claim 4, characterized in that: The oil outlet pipe (4) is provided with a pressure switch (14), and the pressure switch (14) is arranged downstream of the filter (11).

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