Speed reducer gear lubricating device
By designing a gear lubrication device for a speed reducer, which utilizes heating plate drying, air filtration, and magnetic rod removal, the problem of moisture and impurities in the lubricating oil is solved. This achieves efficient filtration and cooling of the lubricating oil, improves lubrication performance, and extends the service life of the equipment.
Patent Information
- Application Number
- CN202520646903.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2025-04-08
- Publication Date
- 2026-01-13
- Estimated Expiration
- 2035-04-08
AI Technical Summary
Moisture in existing gear reducer lubricating oil leads to decreased lubrication performance, emulsification, affects oil film stability, and increases friction and wear. At the same time, impurities in the lubricating oil affect fluidity and lubrication performance, which may lead to gear jamming and failure.
A gear lubrication device for a speed reducer is designed, including an oil outlet pipe, a transfer pipe, a drying and filtering box, an air filter, a cooling box, and an oil pump. The lubricating oil is dried by a heating plate, water vapor is absorbed by the air filter, impurities are removed by a filter screen, and metal impurities are adsorbed by a magnetic rod. The lubricating oil is cooled by the cooling box and then re-sprayed into the gearbox.
It achieves the drying, impurity removal, and cooling of lubricating oil, ensuring the quality of lubricating oil, improving the lubrication effect of reducer gears, and extending the service life of equipment.
Smart Images

Figure CN223794639U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the field of speed reducer technology, and in particular to a speed reducer gear lubrication device. Background Technology
[0002] A speed reducer is a device used to reduce the speed in mechanical transmissions and is widely used in various industrial machinery and automated equipment. It converts the high speed of the input shaft to the low speed of the output shaft through the interaction of a series of gears, while increasing the output torque. During operation, gears generate friction. Lubricating oil forms an oil film on the gear surface, reducing direct metal-to-metal contact, thus reducing friction and wear. Gears generate a large amount of heat during operation, which lubricating oil helps to dissipate. Furthermore, lubricating oil removes metal particles and other impurities generated during gear operation, keeping the gears clean. However, moisture in the lubricating oil can lead to decreased lubrication performance, emulsification, and reduced oil film stability, thereby increasing friction and wear. Simultaneously, impurities carried away by the lubricating oil can precipitate in the oil, forming dirt, affecting oil flow and lubrication performance, and potentially causing gear jamming and malfunction. To ensure that the chemical composition and physical properties of the lubricating oil remain optimal, optimize lubrication, and extend equipment life, a gear lubrication device that automatically dries and removes impurities from the lubricating oil in the gearbox of the speed reducer is needed. Utility Model Content
[0003] The present invention aims to address the shortcomings of the prior art by providing a gear lubrication device for a speed reducer.
[0004] To achieve the above objectives, this utility model adopts the following technical solution: a gear lubrication device for a speed reducer, wherein the bottom of the speed reducer gearbox has an oil outlet and the top of the speed reducer gearbox has an oil inlet. The gear lubrication device includes: an oil outlet pipe, a first transfer pipe, a second transfer pipe, a drying and filtering box, an air filter device, a cooling box, an oil pump, and an oil inlet pipe. An oil outlet pipe is installed on the oil outlet, and the oil outlet pipe is connected to the first transfer pipe. The first transfer pipe is connected to the second transfer pipe, and a filter screen is provided at the inlet end of the second transfer pipe. The outlet end of the second transfer pipe extends into the bottom of the drying and filtering box. The drying and filtering box includes a box body and a top cover. A filter screen cylinder is installed inside the box body. The top of the filter screen cylinder is fixed on the top cover. A sealing ring is fixedly installed at the bottom of the filter screen cylinder. Several heating plates are evenly arranged inside the box body. An air filtration device is installed on the top cover. The upper end of the box body is connected to the lower end of the cooling box. The upper end of the cooling box is connected to the oil inlet of the oil pump. The oil outlet of the oil pump is connected to the oil inlet pipe. The oil inlet pipe passes through the oil inlet.
[0005] Furthermore, the air filtration device includes: a filter tube, a ventilation pipe fixedly connected to the bottom of the filter tube, ventilation holes opened at the top and bottom of the filter tube, and the filter tube being filled from top to bottom with top filter paper, activated carbon adsorbent, silica gel desiccant and bottom filter paper, and the ventilation pipe penetrating the top cover.
[0006] Furthermore, several partitions are fixedly and interlaced on the inner wall of the cooling box, forming a tortuous liquid passage inside the cooling box.
[0007] Furthermore, a fixing rod is connected below the center of the top cover, and a magnetic rod is fixedly connected below the fixing rod.
[0008] Furthermore, a ball valve is provided between the oil outlet pipe and the first transfer pipe.
[0009] Furthermore, an oil injector is provided at the end of the oil inlet pipe.
[0010] Furthermore, an oil level indicator is installed on the gearbox of the reducer.
[0011] The beneficial effects of this utility model are as follows: This utility model uses an oil pump to extract the lubricating oil from the gearbox of the reducer, uses a heating plate to dry the lubricating oil, uses an air filter to absorb moisture while preventing external impurities from mixing into the lubricating oil, uses two layers of filter screens to filter and remove impurities from the lubricating oil, uses a magnetic rod to adsorb metal impurities to remove impurities from the lubricating oil, uses a cooling box to cool the lubricating oil and then re-injects it into the gearbox, and uses a nozzle to spray it onto the gear meshing point, thus achieving lubrication of the reducer gears, ensuring the quality of the lubricating oil, and improving the lubrication effect of the reducer gears. Attached Figure Description
[0012] Figure 1 This is a schematic diagram illustrating the use of this utility model;
[0013] Figure 2 for Figure 1 Enlarged view of point A in the middle;
[0014] Figure 3 This is a cross-sectional schematic diagram of the drying filter box;
[0015] Figure 4 This is a cross-sectional schematic diagram of an air filtration device;
[0016] Figure 5 This is a cross-sectional view of the cooling box;
[0017] In the diagram: 1-Gearbox of reducer; 10-Oil level indicator; 2-Oil outlet pipe; 3-First transfer pipe; 30-Ball valve; 4-Second transfer pipe; 40-Filter screen; 5-Drying filter box; 50-Box body; 51-Top cover; 52-Filter screen cylinder; 53-Sealing ring; 54-Heating plate; 55-Fixing rod; 56-Magnetic rod; 6-Air filtration device; 60-Filter pipe; 61-Ventilation pipe; 62-Top filter paper; 63-Activated carbon adsorbent; 64-Silica gel desiccant; 65-Bottom filter paper; 7-Cooling box; 70-Partition plate; 8-Oil pump; 9-Oil inlet pipe; 90-Oil injector;
[0018] The accompanying drawings in this utility model are all schematic diagrams and their sizes do not represent actual dimensions.
[0019] The following will describe in detail the embodiments of this utility model with reference to the accompanying drawings. Detailed Implementation
[0020] The present invention will be further described below with reference to the accompanying drawings and embodiments:
[0021] like Figures 1-5 As shown, a gear lubrication device for a speed reducer includes an oil outlet at the bottom of the gearbox 1 and an oil inlet at the top. The gear lubrication device comprises: an oil outlet pipe 2, a first transfer pipe 3, a second transfer pipe 4, a drying and filtering box 5, an air filter 6, a cooling box 7, an oil pump 8, and an oil inlet pipe 9. The oil outlet pipe 2 is installed on the oil outlet and is connected to the first transfer pipe 3. The first transfer pipe 3 is connected to the second transfer pipe 4. A filter screen 40 is installed at the inlet end of the second transfer pipe 4, and the outlet end of the second transfer pipe 4 extends into the drying and filtering box 5. At the bottom of the drying filter box 5, the drying filter box 5 includes a box body 50 and a top cover 51. A filter screen cylinder 52 is provided inside the box body 50. The top of the filter screen cylinder 52 is fixed on the top cover 51. A sealing ring 53 is fixedly installed at the bottom of the filter screen cylinder 52. Several heating plates 54 are evenly arranged inside the box body 50. An air filter device 6 is installed on the top cover 51. The upper end of the box body 50 is connected to the lower end of the cooling box 7. The upper end of the cooling box 7 is connected to the oil inlet of the oil pump 8. The oil outlet of the oil pump 8 is connected to the oil inlet pipe 9. The oil inlet pipe 9 is inserted into the oil inlet.
[0022] Specifically, lubricating oil is drawn from the storage tank 2 by the oil pump 8, flows through the first transfer pipe 3 and the second transfer pipe 4 into the drying and filtering box 5. The first transfer pipe 3 and the second transfer pipe 4 are connected by flanges. A filter screen 40 is installed at the inlet of the second transfer pipe 4 to perform the first filtration of the lubricating oil. The flange connection facilitates disassembly and cleaning. After the lubricating oil enters the drying and filtering box 5, it is heated and dried by the heating plate 54. The evaporated water vapor is discharged through the air filter device 6. The lubricating oil undergoes a second filtration through the filter screen cylinder 52. Impurities are retained inside the filter screen cylinder 52. The box body 50 and the top cover 51 are connected by flanges, which facilitates opening the top cover 51 to replenish the lubricating oil and clean impurities. After filtration, the lubricating oil enters the cooling box 7 for cooling, and is then sprayed into the gearbox through the oil pump 8 and the oil inlet pipe 9.
[0023] The air filtration device 6 includes: a filter tube 60, a ventilation tube 61 fixedly connected to the bottom of the filter tube 60, ventilation holes at the top and bottom of the filter tube 60, and the filter tube 60 is filled from top to bottom with a top filter paper 62, an activated carbon adsorbent 63, a silica gel desiccant 64, and a bottom filter paper 65, and the ventilation tube 61 penetrates the top cover 51.
[0024] Specifically, the water vapor evaporated from the heated lubricating oil enters the filter tube 60 through the ventilation pipe 61 and the vent hole. The silica gel desiccant 64 in the filter tube 60 absorbs the water vapor, while the activated carbon adsorbent 63, the top filter paper 62, and the bottom filter paper 65 prevent external impurities from contaminating the lubricating oil.
[0025] The inner wall of the cooling box 7 is provided with several partitions 70 that are fixedly arranged in an alternating manner, forming a tortuous liquid passage inside the cooling box 7.
[0026] Specifically, one side of the partition 70 is installed on one side wall of the cooling box 7, and there is a gap between the other side of the partition 70 and the other side wall of the cooling box 7. Several partitions 70 are alternately installed on the two side walls of the cooling box 7. By increasing the path length of the lubricating oil flow and increasing the flow time of the lubricating oil, the heat dissipation of the lubricating oil is achieved.
[0027] A fixing rod 55 is connected to the lower part of the center of the top cover 51, and a magnetic rod 56 is fixedly connected to the lower part of the fixing rod 55.
[0028] Specifically, the magnetic rod 56 is used to adsorb metallic impurities to remove impurities from the lubricating oil. When the top cover 51 is opened, the magnetic rod 56 is removed along with the fixing rod 55 to clean the impurities.
[0029] A ball valve 30 is provided between the oil outlet pipe 2 and the first transfer pipe 3.
[0030] Specifically, ball valve 30 can be closed during cleaning.
[0031] An oil injector 90 is provided at the end of the oil inlet pipe 9.
[0032] Specifically, use the 90mm nozzle to spray lubricating oil onto the gear meshing area.
[0033] An oil level indicator 10 is installed on the gearbox 1 of the reducer.
[0034] Specifically, it is used to monitor the level of lubricating oil in the gearbox 1 of the reducer.
[0035] The method of using this utility model is as follows: Lubricating oil is drawn from the oil storage tank 2 by the oil pump 8, flows into the drying and filtering box 5 through the first transfer pipe 3 and the second transfer pipe 4. A filter screen 40 is installed at the inlet of the second transfer pipe 4 to perform the first filtration of the lubricating oil. After the lubricating oil enters the drying and filtering box 5, the heating plate 54 heats and dries it, and the evaporated water vapor is discharged through the air filter device 6. The lubricating oil undergoes a second filtration through the filter screen cylinder 52. Impurities are left inside the filter screen cylinder 52, and the lubricating oil is removed by adsorbing metal impurities with a magnetic rod 56. After filtration and removal of impurities, the lubricating oil enters the cooling box 7 for cooling, and is then sprayed into the gearbox through the oil pump 8 and the oil inlet pipe 9. The lubricating oil is sprayed onto the gear meshing part by the oil nozzle 90.
[0036] The present invention has been described above with reference to the accompanying drawings. Obviously, the specific implementation of the present invention is not limited to the above-described manner. Any improvements made using the inventive concept and technical solution of the present invention, or direct application to other situations without modification, are all within the protection scope of the present invention.
Claims
1. A speed reducer gear lubricating device, a speed reducer gear box (1) is provided with an oil outlet at the bottom, and an oil inlet at the top, characterized in that, The gear lubricating device of the speed reducer comprises an oil outlet pipe (2), a first transfer pipe (3), a second transfer pipe (4), a dry filter box (5), an air filter device (6), a cooling box (7), an oil pump (8), an oil inlet pipe (9), the oil outlet pipe (2) is arranged on the oil outlet, the oil outlet pipe (2) is communicated with the first transfer pipe (3), the first transfer pipe (3) is communicated with the second transfer pipe (4), the inlet end of the second transfer pipe (4) is provided with a filter screen (40), the outlet end of the second transfer pipe (4) extends into the bottom of the dry filter box (5), the dry filter box (5) comprises a box body (50) and a top cover (51), the filter screen cylinder (52) is arranged in the box body (50), the top of the filter screen cylinder (52) is fixed on the top cover (51), the bottom of the filter screen cylinder (52) is fixedly provided with a sealing ring (53), a plurality of heating plates (54) are uniformly arranged on the inner side of the box body (50), the air filter device (6) is arranged on the top cover (51), the upper end of the box body (50) is communicated with the lower end of the cooling box (7), the upper end of the cooling box (7) is communicated with the oil inlet of the oil pump (8), the oil outlet of the oil pump (8) is communicated with the oil inlet pipe (9), and the oil inlet pipe (9) penetrates into the oil inlet.
2. A speed reducer gear lubricating device according to claim 1, wherein The air filter device (6) comprises a filter pipe (60), a ventilation pipe (61) is fixedly connected below the filter pipe (60), air holes are formed in the top and bottom of the filter pipe (60), top filter paper (62), activated carbon adsorbent (63), silica gel desiccant (64) and bottom filter paper (65) are sequentially filled in the filter pipe (60) from top to bottom, and the ventilation pipe (61) penetrates the top cover (51).
3. A speed reducer gear lubricating device according to claim 1, wherein A plurality of baffles (70) are fixedly arranged on the inner wall of the cooling box (7) in a staggered mode, and the cooling box (7) forms a winding liquid passage.
4. A speed reducer gear lubricating device according to claim 1, wherein A fixed rod (55) is connected below the center position of the top cover (51), and a magnetic bar (56) is fixedly connected below the fixed rod (55).
5. A speed reducer gear lubricating device according to claim 1, wherein A ball valve (30) is arranged between the oil outlet pipe (2) and the first transfer pipe (3).
6. A speed reducer gear lubricating device according to claim 1, wherein An oil nozzle (90) is arranged at the tail end of the oil inlet pipe (9).
7. A speed reducer gear lubricating device according to claim 1, wherein An oil mark (10) is arranged on the gear box (1) of the speed reducer.