Lubricating oil filtering and backflow device of rotary speed reducer

Abstract

The utility model discloses a rotary speed reducer lubricating oil filtering backflow device and relates to the technical field of conveying mechanisms, a rotary speed reducer comprises a center rotary mechanism and a shell which are matched with each other, the shell comprises a motor flange, a gear ring sleeve and a supporting flange which are coaxial, and the gear ring sleeve is fixedly arranged on the supporting flange. The motor flange is fixedly arranged on the gear ring sleeve, the filtering backflow device comprises an oil pump, a filtering assembly, an oil return pipeline, an oil inlet pipeline and an oil outlet pipeline, and the oil pump is fixedly arranged on the outer side of the supporting flange; by arranging the oil pump, the filtering assembly, the oil return pipeline, the oil inlet pipeline and the oil outlet pipeline, lubricating oil in the speed reducer is subjected to backflow circulation and filtered through the filtering assembly, manual operation is reduced, labor intensity is relieved, the lubricating oil is recycled, the lubricating effect is improved, the service life is prolonged, and maintenance cost and maintenance time are reduced.

Description

Technical Field

[0001] The utility model relates to the technical field of transmission mechanisms, in particular to a rotary reducer lubricating oil filtering and reflux device. Background Art

[0002] Slewing reducers transmit power and reduce speed, playing a key role in mining shovels. These reducers are used in a vertical position and consist of a central slewing mechanism and a housing. The gears, bearings, and other transmission components in this mechanism require good lubrication to reduce friction, minimize wear, improve transmission efficiency, and extend service life.

[0003] The input shaft and output shaft of the electric shovel rotary reducer are in the vertical direction. The lubricating oil is injected from the top and flows downward by gravity. After a certain period of time, more lubricating oil will be stored in the bottom of the reducer, while the lubricating oil on the top gear of the reducer will continue to decrease, and eventually it will become dry grinding.

[0004] However, the existing technology is to manually add lubricating oil from the top of the reducer after a certain period of operation, which is time-consuming and labor-intensive, and cannot meet the requirements of reliability and high efficiency. In view of the above problems, it is necessary to design a device that can perform reflux environmental protection and has filtering capabilities. Utility Model Content

[0005] In response to the above-mentioned deficiencies in the prior art, the utility model provides a rotary reducer lubricating oil filtering and reflux device. By arranging an oil pump, a filtering component, an oil return pipe, an oil inlet pipe and an oil outlet pipe, the lubricating oil inside the reducer is refluxed and filtered through the filtering component, thereby reducing manual operation, alleviating labor intensity, recycling the lubricating oil, improving lubrication effect and service life, and reducing maintenance costs and maintenance time.

[0006] In order to achieve the above purpose, the utility model is implemented through the following technical solutions: a rotary reducer lubricating oil filtering and reflux device, the rotary reducer includes a central rotary mechanism and a shell that cooperate with each other, the shell includes a motor flange, a gear ring sleeve and a support flange with a coaxial center line, the gear ring sleeve is fixedly arranged on the support flange, the motor flange is fixedly arranged on the gear ring sleeve, the filtering and reflux device includes an oil pump, a filter assembly, an oil return pipe, an oil inlet pipe and an oil outlet pipe, the oil pump is fixedly arranged on the outside of the support flange, an annular secondary oil storage tank is opened on the inside of the support flange, an annular primary oil storage tank is opened at the bottom of the inner side of the gear ring sleeve, and the inside of the rotary reducer The lubricating oil can fall into the primary oil storage tank. A plurality of oil drain holes are evenly provided at the bottom of the primary oil storage tank. The oil drain holes are connected to the secondary oil storage tank. A through oil outlet is provided on the inner and outer sides of the support flange. The oil outlet is connected to the secondary oil storage tank. One end of the oil outlet pipe is connected to the oil inlet end of the oil pump, and the other end of the oil outlet pipe is connected to the oil outlet. The lower end of the oil return pipe is connected to the oil outlet end of the oil pump, and the upper end of the oil return pipe is connected to the oil inlet end of the filter assembly. A through oil inlet is provided on the inner and outer sides of the motor flange. One end of the oil inlet pipe is connected to the oil outlet end of the filter assembly, and the other end of the oil inlet pipe is connected to the oil inlet.

[0007] Preferably, the filter assembly includes a filter tube, filter cotton and a filter net, the upper end of the filter tube is connected to the return oil pipeline, the lower end of the filter tube is connected to the oil inlet pipeline, the filter net is horizontally arranged in the filter tube, and the filter cotton is arranged on the filter net.

[0008] Preferably, an oil pressure gauge is provided on the oil return pipeline.

[0009] Preferably, the oil inlet is designed to be conical.

[0010] The utility model provides a rotary reducer lubricating oil filtering and reflux device, which has the following beneficial effects:

[0011] 1. The utility model provides an oil pump, a filter assembly, an oil return pipe, an oil inlet pipe, and an oil outlet pipe to circulate the lubricating oil inside the reducer and filter it through the filter assembly, thereby reducing manual operation and labor intensity, recycling the lubricating oil, improving lubrication effect and service life, and reducing maintenance costs and time.

[0012] 2. The oil storage tanks in this utility model are designed in a hierarchical manner. A primary oil storage tank is provided at the bottom of the inner wall of the gear ring sleeve, and a secondary oil storage tank is provided on the inner wall of the support flange. The primary oil storage tank and the secondary oil storage tank are connected through an oil drain hole. The primary oil storage tank has the function of receiving the lubricating oil falling from the upper part, and then flows into the secondary oil storage tank through the oil drain hole, making the lubricating oil in the secondary oil storage tank more stable, thereby making the backflow more stable;

[0013] 3. The oil inlet of the utility model is designed to be conical. When the oil is input through the conical oil inlet, the oil flow rate is increased and the oil is sprayed to a position close to the axis of the reducer, which has a better lubrication effect. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is an elevation view of the entire utility model;

[0015] Figure 2 This is a schematic diagram of the main cross-section of the utility model;

[0016] Figure 3 Schematic diagram of the primary oil storage tank and the secondary oil storage tank of the utility model;

[0017] Figure 4 It is a schematic diagram of the oil outlet of the utility model.

[0018] In the figure: 1. Filter assembly; 2. Oil inlet pipe; 3. Oil pressure gauge; 4. Oil return pipe; 5. Oil pump; 6. Oil outlet pipe; 7. Filter cotton; 8. Filter screen; 9. Oil inlet; 10. Primary oil storage tank; 11. Oil drain hole; 12. Secondary oil storage tank; 13. Oil outlet; 14. Support flange; 15. Gear ring sleeve; 16. Motor flange; 17. Filter tube. DETAILED DESCRIPTION

[0019] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0020] like Figure 1-Figure 4As shown, a rotary reducer lubricating oil filtering and reflux device is provided. The rotary reducer includes a central rotary mechanism and a housing that cooperate with each other. The housing includes a coaxial motor flange 16, a gear ring sleeve 15 and a support flange 14. The gear ring sleeve 15 is fixedly arranged on the support flange 14, and the motor flange 16 is fixedly arranged on the gear ring sleeve 15. The filtering and reflux device includes an oil pump 5, a filter assembly 1, an oil return pipe 4, an oil inlet pipe 2 and an oil outlet pipe 6. The oil pump 5 is fixedly arranged on the outside of the support flange 14, and an annular secondary oil storage tank 12 is provided on the inside of the support flange 14. An annular primary oil storage tank 10 is provided at the bottom of the inner side of the gear ring sleeve 15. The lubricating oil inside the rotary reducer can fall into the primary oil storage tank 10. A plurality of oil drain holes 11 are evenly provided at the bottom of the primary oil storage tank 10. The oil drain holes 11 are connected to the secondary oil storage tank 12. The inner and outer sides of the support flange 14 are provided with through holes. The oil outlet 13 is connected to the secondary oil storage tank 12, one end of the oil outlet pipe 6 is connected to the oil inlet end of the oil pump 5, and the other end of the oil outlet pipe 6 is connected to the oil outlet 13, the lower end of the return oil pipe 4 is connected to the oil outlet end of the oil pump 5, and the upper end of the return oil pipe 4 is connected to the oil inlet end of the filter assembly 1, and the inner and outer sides of the motor flange 16 are provided with a through oil inlet 9, one end of the oil inlet pipe 2 is connected to the oil outlet end of the filter assembly 1, and the other end of the oil inlet pipe 2 is connected to the oil inlet 9; the filter assembly 1 includes a filter tube 17, filter cotton 7 and a filter screen 8, the upper end of the filter tube 17 is connected to the return oil pipe 4, and the lower end of the filter tube 17 is connected to the oil inlet pipe 2, the filter screen 8 is horizontally arranged in the filter tube 17, and the filter cotton 7 is arranged on the filter screen 8; an oil pressure gauge 3 is provided on the return oil pipe 4; the oil inlet 9 is designed to be conical.

[0021] The detailed connection means are well known in the art. The following mainly introduces the working principle and process, which are as follows:

[0022] According to the attached drawings Figure 1-Figure 4As can be seen, the rotary reducer of the present invention includes a central rotary mechanism and a housing that cooperate with each other. The housing includes a coaxial motor flange 16, a gear ring sleeve 15, and a support flange 14. The gear ring sleeve 15 is fixedly mounted on the support flange 14, and the motor flange 16 is fixedly mounted on the gear ring sleeve 15. This part is a basic component of the reducer and is a prior art. During operation, the oil pump 5 operates, sucking lubricating oil from the secondary oil reservoir 12 through the oil outlet pipe 6 and the oil outlet 13, and delivering it to the filter assembly 1 through the oil return line. The lubricating oil passes through the filter assembly 1 and enters the reducer through the oil inlet pipe 2 and the oil inlet 9. Under the influence of gravity, the lubricating oil flows from the inside of the motor flange 16 through the inside of the gear ring sleeve 15 and falls back into the primary oil reservoir 10, lubricating the meshing and rotating components within the rotary reducer. The lubricating oil that falls into the primary oil reservoir 10 enters the secondary oil reservoir 12 through the oil drain hole 11. Finally, the lubricating oil in the secondary oil reservoir 12 is sucked out again, thus forming a lubricating oil circulation system. The present invention improves the automation level of the lubricating oil circulation system, recycles the lubricating oil, reduces manual operation, and reduces labor intensity. The filter assembly 1 filters the lubricating oil in the circulation system, removes impurities, improves lubrication effect and service life, reduces the frequency of lubricating oil replacement, and also reduces lubricating oil consumption and waste oil discharge. This is in line with the trend of green industrial development, reduces environmental pollution caused by waste oil treatment, helps enterprises achieve energy conservation and emission reduction goals, ensures lubricating oil cleanliness, avoids abnormal heating and noise caused by poor lubrication, maintains stable equipment operation, reduces the number of downtimes for maintenance, and reduces maintenance costs and time. In addition, the oil storage tanks in the present invention are designed in a hierarchical manner. A primary oil storage tank 10 is provided at the bottom of the inner wall of the gear ring sleeve 15, and a secondary oil storage tank 12 is provided on the inner wall of the support flange 14. The primary oil storage tank 10 and the secondary oil storage tank 12 are connected by an oil drain hole 11. The primary oil storage tank 10 has the function of receiving the lubricating oil falling from the upper part, and then flows into the secondary oil storage tank 12 through the oil drain hole 11, making the lubricating oil in the secondary oil storage tank 12 more stable, thereby making the backflow more stable.

[0023] Among them, the filter assembly 1 includes a filter tube 17, filter cotton 7 and a filter screen 8. The upper end of the filter tube 17 is connected to the return oil pipe 4, and the lower end of the filter tube 17 is connected to the oil inlet pipe 2. The filter screen 8 is horizontally arranged in the filter tube 17, and the filter cotton 7 is arranged on the filter screen 8. The lubricating oil enters from the upper part of the filter tube 17. Through the filtration of the filter cotton 7 and the filter screen 8, the metal debris, dust, moisture and oxidation products in the lubricating oil are effectively removed, preventing impurities from causing gear wear and bearing jamming inside the rotary reducer, reducing failures caused by component damage, and the lubricating oil that discharges impurities enters the rotary reducer from the oil inlet pipe at the lower end of the filter tube 17. The filtering structure is simple, the effect is good, and it is easy to repair and maintain.

[0024] Among them, an oil pressure gauge 3 is provided on the return oil pipeline 4 for monitoring the status. It can be used in conjunction with sensors and external alarms. When the pressure is abnormal, an alarm is automatically triggered to ensure the safe operation of the system. This can be achieved through existing technology.

[0025] Among them, the oil inlet 9 is designed to be conical. The lubricating oil is input through the conical oil inlet 9, the flow rate of the lubricating oil is increased, and it is sprayed to a position close to the axis of the reducer, which has a better lubrication effect. According to the Bernoulli principle, the lubricating flow rate is accelerated to ensure flow stability and avoid cavitation. In addition, the unidirectional acceleration prevents impurities from flowing back, adapts to high-viscosity oil, and avoids oil absorption difficulties caused by excessively high viscosity.

[0026] In this utility model, the filter tube 17 in the filter assembly 1 is precision-cast from Q235 steel, with a 30-50μm thick Teflon coating sprayed on the inner wall to prevent rust and sludge adhesion. The oil inlet pipe 2, oil outlet pipe 6, and oil return pipe 4 are seamless steel pipes covered with a 3mm thick polyurethane insulation layer, suitable for ambient temperatures between -40°C and 80°C. Each connection interface can be flanged, and the seal is a fluororubber O-ring. All of the above designs can be implemented using existing technology.

[0027] Although the embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and variations may be made to these embodiments without departing from the principles and spirit of the present invention, and the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A rotary reducer lubricating oil filtering and reflux device, the rotary reducer includes a central rotary mechanism and a housing that cooperate with each other, the housing includes a coaxial motor flange (16), a gear ring sleeve (15) and a support flange (14), the gear ring sleeve (15) is fixedly arranged on the support flange (14), and the motor flange (16) is fixedly arranged on the gear ring sleeve (15), characterized in that: The filtering reflux device comprises an oil pump (5), a filtering assembly (1), an oil return pipe (4), an oil inlet pipe (2) and an oil outlet pipe (6), wherein the oil pump (5) is fixedly arranged on the outside of a supporting flange (14), an annular secondary oil storage tank (12) is provided on the inside of the supporting flange (14), an annular primary oil storage tank (10) is provided on the bottom of the inner side of the gear ring sleeve (15), and the lubricating oil inside the rotary reducer can fall into the primary oil storage tank (10), a plurality of oil drain holes (11) are evenly provided on the bottom of the primary oil storage tank (10), and the oil drain holes (11) are communicated with the secondary oil storage tank (12), and the inner side of the supporting flange (14) is provided with a plurality of oil drain holes (11) which are communicated with the secondary oil storage tank (12). An oil outlet (13) is provided on the outside of the motor flange (16), and the oil outlet (13) is communicated with the secondary oil storage tank (12). One end of the oil outlet pipe (6) is connected to the oil inlet end of the oil pump (5), and the other end of the oil outlet pipe (6) is connected to the oil outlet (13). The lower end of the oil return pipe (4) is connected to the oil outlet end of the oil pump (5), and the upper end of the oil return pipe (4) is connected to the oil inlet end of the filter assembly (1). An oil inlet (9) is provided on the inner and outer sides of the motor flange (16), one end of the oil inlet pipe (2) is connected to the oil outlet end of the filter assembly (1), and the other end of the oil inlet pipe (2) is connected to the oil inlet (9).

2. A rotary reducer lubricating oil filtering and reflux device according to claim 1, characterized in that: The filter assembly (1) comprises a filter tube (17), filter cotton (7) and a filter screen (8); the upper end of the filter tube (17) is connected to the oil return pipeline (4); the lower end of the filter tube (17) is connected to the oil inlet pipeline (2); the filter screen (8) is horizontally arranged in the filter tube (17); and the filter cotton (7) is arranged on the filter screen (8).

3. The rotary reducer lubricating oil filtering and reflux device according to claim 1, characterized in that: An oil pressure gauge (3) is provided on the oil return pipeline (4).

4. The rotary reducer lubricating oil filtering and reflux device according to claim 1, characterized in that: The oil inlet (9) is designed to be conical.

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