Lubricating oil circulation structure of hard tooth surface speed reducer

By designing a single-pump oil supply and return mechanism, the problem of needing to equip each reducer with an oil pump in the lubricating oil circulation structure of hardened gear reducers is solved, achieving cost reduction and maintenance convenience, and improving the quality of lubricating oil and the stability of the reducer.

CN224079572UActive Publication Date: 2026-04-03HANGZHOU YIXIN TRANSMISSION TECHNOLOGY CO LTD
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Patent Information

Authority / Receiving Office
CN · China
Patent Type
Utility models(China)
Current Assignee / Owner
Filing Date
2025-06-12
Publication Date
2026-04-03

AI Technical Summary

Technical Problem

The existing lubricating oil circulation structure of hardened gear reducers requires an oil pump for each reducer, resulting in high costs and inconvenient maintenance.

Method used

The system employs a single-pump oil supply mechanism and a return oil treatment mechanism. The single-pump oil supply mechanism supplies oil to multiple reducers, while the return oil treatment mechanism filters and cools the returned lubricating oil, thus enabling the recycling of lubricating oil.

Benefits of technology

It reduces operating costs, simplifies maintenance, and improves the quality of lubricating oil and the working stability of the speed reducer.

✦ Generated by Eureka AI based on patent content.

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Abstract

The utility model relates to the technical field of speed reducer maintenance devices, and discloses a lubricating oil circulation structure of a hard tooth surface speed reducer. The single-pump oil supply mechanism is arranged at the top of the base, and the single-pump oil supply mechanism is used for conveying lubricating oil into the speed reducer; and the oil return processing mechanism is arranged at the top of the single-pump oil supply mechanism. Through the design of the oil pump, lubricating oil in the oil storage bin can be pumped and then conveyed into the flow dividing pipeline, the lubricating oil in the flow dividing pipeline can enter the multiple speed reducers through flow dividing of the valve and the output hose, the function that the lubricating oil is driven by a single pump is achieved, and the use cost is reduced; and through the overall design of the oil return treatment mechanism, backflow lubricating oil can be collected, and the lubricating oil is filtered, purified and cooled, so that the use effect of the lubricating oil is improved, and the working stability of the speed reducer is guaranteed.
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Description

Technical Field

[0001] This utility model relates to the technical field of speed reducer maintenance devices, specifically to a lubricating oil circulation structure for a hardened gear reducer. Background Technology

[0002] A hardened gear reducer is a mechanical device that uses gear transmission to reduce speed and increase torque. It is primarily used to reduce motor speed while increasing output torque. Hardened gear reducers typically use high-quality low-carbon alloy steel to manufacture gears, with the tooth surfaces undergoing carburizing and quenching treatment followed by grinding to ensure stable product quality and reliable performance. The housing is usually made of welded steel plates and undergoes annealing to relieve stress. For reducers operating in high-temperature environments, with high power, high speeds, or continuous operation, a circulating lubrication system is required. This system uses an oil pump to continuously deliver lubricating oil into the reducer to ensure smooth operation.

[0003] The existing lubricating oil circulation structure of hardened gear reducers is mostly designed based on the hardened gear reducer itself. Each reducer needs to be equipped with an oil pump. In some factories, hardened gear reducer units are set up, that is, multiple hardened gear reducers are set up side by side to facilitate production. In this case, equipping each reducer with an oil pump will lead to a high cost problem, and will also make the overall maintenance of the reducer more inconvenient. Utility Model Content

[0004] The purpose of this invention is to provide a lubricating oil circulation structure for a hardened gear reducer, which solves the problem that in the prior art, each reducer is equipped with an oil pump, resulting in high cost and inconvenient maintenance in some operating environments.

[0005] This utility model provides the following technical solution: a lubricating oil circulation structure for a hardened gear reducer, comprising:

[0006] Base;

[0007] A single-pump oil supply mechanism is provided on the top of the base and is used to deliver lubricating oil to the inside of the reducer.

[0008] An oil return treatment mechanism is installed on top of the single-pump oil supply mechanism. The oil return treatment mechanism is used to treat the lubricating oil that flows back inside the reducer.

[0009] As a preferred embodiment of the above technical solution, the single-pump oil supply mechanism includes a support frame, which is fixedly installed on the top of the base. An oil storage tank is fixedly installed on the inner wall of the support frame, and a circular transparent plate is fixedly installed on the inner wall of the oil storage tank near the top.

[0010] The above technical solution, through the design of a circular transparent plate, makes it easy for users to observe the state of the lubricating oil inside the oil storage tank.

[0011] As a preferred embodiment of the above technical solution, the single-pump oil supply mechanism further includes an oil pump, which is fixedly installed on the top of the base. The input end of the oil pump is fixedly connected to the bottom of the oil storage tank. The output end of the oil pump is detachably connected to a diversion pipe. A valve is fixedly connected to the side of the diversion pipe away from the oil pump. An output hose is threadedly connected to the end of the valve away from the diversion pipe. A support pad is fixedly installed at the bottom of the diversion pipe, and the support pad is movably connected to the top of the base.

[0012] Through the above technical solution, lubricating oil can be pumped into the interior of multiple reducers by means of the diversion function of valves and output hoses.

[0013] As a preferred embodiment of the above technical solution, the oil return treatment mechanism includes a cooling channel, which is fixedly connected to the top of the oil storage tank. A connecting cover is fixedly connected to the back of the cooling channel, and an axial flow fan is fixedly connected to the back of the connecting cover.

[0014] Through the above technical solution, the axial flow fan can be designed to deliver air through the connecting cover into the inclined guide plate, so as to facilitate heat exchange and cooling of the lubricating oil.

[0015] As a preferred embodiment of the above technical solution, an inclined guide plate is fixedly installed on the inner wall of the cooling channel, and a strip groove is formed inside the inclined guide plate. Fitting grooves are formed on both the front and back of the connecting cover.

[0016] The above technical solution, through the design of the strip groove and the fitting groove, allows air to flow through the interior of the inclined guide plate, so as to facilitate heat exchange and cooling of the lubricating oil.

[0017] As a preferred embodiment of the above technical solution, a purification channel is fixedly connected to the top of the cooling channel, an inner partition is fixedly installed on the inner wall of the purification channel, a groove is provided on the top of the inner partition, a magnetic block is fixedly installed on the inner wall of the groove, a movable ring is movably inserted into the inner cavity of the groove, the bottom of the movable ring is magnetically connected to the top of the magnetic block, and a lubricating oil filter is fixedly connected to the bottom of the movable ring.

[0018] Through the above technical solution, the lubricating oil filter cover can be designed to filter the returned lubricating oil and improve the quality of the circulating lubricating oil.

[0019] As a preferred embodiment of the above technical solution, a movable cover is movably inserted into the top of the purification channel, and a return hose is threadedly connected to the top of the movable cover.

[0020] The above technical solution, through the design of the return hose, facilitates the recycling of lubricating oil after use.

[0021] Compared with the prior art, the beneficial effects of this utility model are:

[0022] This invention utilizes an oil pump design to extract lubricating oil from the oil storage tank and deliver it to the distribution pipe. The lubricating oil in the distribution pipe is then diverted through valves and output hoses to enter multiple reducers, enabling a single pump to drive the lubricating oil. This reduces operating costs and facilitates maintenance. Furthermore, the overall design of the return oil treatment mechanism collects the returned lubricating oil and filters, purifies, and cools it, improving the lubricating oil's performance and ensuring the stability of the reducer's operation. Attached Figure Description

[0023] Figure 1 This is a perspective view of the present utility model;

[0024] Figure 2 for Figure 1 Enlarged structural diagram at point A;

[0025] Figure 3 This is a cross-sectional structural diagram of the cooling channel of this utility model;

[0026] Figure 4 This is a cross-sectional structural diagram of the purification channel of this utility model.

[0027] In the diagram: 1. Base; 2. Single-pump oil supply mechanism; 21. Support frame; 22. Oil reservoir; 221. Circular transparent plate; 23. Oil pump; 24. Diversion pipe; 25. Valve; 26. Output hose; 27. Support pad; 3. Oil return treatment mechanism; 31. Cooling channel; 311. Connecting cover; 312. Axial flow fan; 313. Inclined guide plate; 314. Strip groove; 315. Fitting groove; 32. Purification channel; 321. Internal partition; 322. Groove; 323. Magnetic block; 324. Movable ring; 325. Lubricating oil filter cover; 326. Movable cover; 327. Return hose. Detailed Implementation

[0028] The technical solutions of the present invention will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present invention.

[0029] like Figures 1-4 As shown, this utility model provides a technical solution: a lubricating oil circulation structure for a hardened gear reducer, comprising:

[0030] Base 1;

[0031] A single-pump oil supply mechanism 2 is installed on the top of the base 1 and is used to deliver lubricating oil to the inside of the reducer.

[0032] The oil return treatment mechanism 3 is located on top of the single pump oil supply mechanism 2. The oil return treatment mechanism 3 is used to treat the lubricating oil that flows back inside the reducer.

[0033] As one implementation method in this embodiment, such as Figure 1 , Figure 2 As shown, the single-pump oil supply mechanism 2 includes a support frame 21, which is fixedly installed on the top of the base 1. An oil storage tank 22 is fixedly installed on the inner wall of the support frame 21. A circular transparent plate 221 is fixedly installed on the inner wall of the oil storage tank 22 near the top. The single-pump oil supply mechanism 2 also includes an oil pump 23, which is fixedly installed on the top of the base 1. The input end of the oil pump 23 is fixedly connected to the bottom of the oil storage tank 22. The output end of the oil pump 23 is detachably connected to a diversion pipe 24. A valve 25 is fixedly connected to the side of the diversion pipe 24 away from the oil pump 23. An output hose 26 is threadedly connected to the end of the valve 25 away from the diversion pipe 24. A support pad 2 is fixedly installed at the bottom of the diversion pipe 24. 7. The support pad 27 is movably connected to the top of the base 1. Since the output hose 26 is threaded onto the valve 25, the user can select an appropriate length of output hose 26 according to the usage environment. The end of the output hose 26 away from the valve 25 is pre-connected to the top of the reducer housing. The oil pump 23 is controlled to work, which can draw the lubricating oil inside the oil storage tank 22 and deliver it to the diversion pipe 24. The lubricating oil inside the diversion pipe 24 is then diverted through the valve 25 and the output hose 26 and can enter the interior of multiple reducers. The lubricating oil then flows to the surface of the gear assembly under the action of gravity to achieve the lubrication function. By closing the valve 25, the delivery of the idle output hose 26 can be paused.

[0034] As one implementation method in this embodiment, such as Figure 3As shown, the oil return treatment mechanism 3 includes a cooling channel 31, which is fixedly connected to the top of the oil storage tank 22. A connecting cover 311 is fixedly connected to the back of the cooling channel 31, and an axial flow fan 312 is fixedly connected to the back of the connecting cover 311. An inclined guide plate 313 is fixedly installed on the inner wall of the cooling channel 31. A strip groove 314 is opened inside the inclined guide plate 313. A fitting groove 315 is opened on both the front and back of the connecting cover 311. The lubricating oil inside the purification channel 32 will flow back to the oil storage tank 22 through the inner cavity of the cooling channel 31 under the action of gravity. During the process, the lubricating oil can be zigzag at the top of the inclined guide plate 313. At this time, the axial flow fan 312 is controlled to work, which can absorb air and then deliver it to the connecting cover 311. The air then flows through the inner cavity of the fitting groove 315 and the strip groove 314. At this time, the air can exchange heat with the lubricating oil, reduce the temperature of the lubricating oil, and ensure the performance of the lubricating oil.

[0035] As one implementation method in this embodiment, such as Figure 4 As shown, a purification channel 32 is fixedly connected to the top of the cooling channel 31. An inner partition 321 is fixedly installed on the inner wall of the purification channel 32. A groove 322 is opened on the top of the inner partition 321. A magnetic block 323 is fixedly installed on the inner wall of the groove 322. A movable ring 324 is movably inserted into the inner cavity of the groove 322. The bottom of the movable ring 324 is magnetically connected to the top of the magnetic block 323. A lubricating oil filter cover 325 is fixedly connected to the bottom of the movable ring 324. A movable cover 326 is movably inserted into the top of the purification channel 32. A return hose 327 is threadedly connected to the top of the movable cover 326. The overall installation height of this structure should be lower than the installation height of the reducer. The lubricating oil that comes into contact with the internal components of the reducer will flow to the bottom of the inner cavity of the reducer housing under the action of gravity. Because the return hose 327 is threadedly connected to the movable cover 324... 6. Users can select a suitable length of return hose 327 according to the usage environment. Beforehand, connect the end of the return hose 327 away from the movable cover 326 to the bottom of the reducer housing. The lubricating oil then flows back through the return hose 327 to the inner cavity of the purification channel 32. Through the design of the lubricating oil filter cover 325, impurities such as debris generated by the friction of the gear assembly can be filtered to ensure the lubricating oil's performance. During maintenance, the movable cover 326 can be pulled out from the top of the purification channel 32, and the movable ring 324 can be pulled out from the top of the inner partition 321. Then, the inner cavity of the lubricating oil filter cover 325 is cleaned. When resetting the lubricating oil filter cover 325, the movable ring 324 is inserted into the groove 322. At this time, the magnetic block 323 can magnetically attract the movable ring 324, thus completing the installation of the lubricating oil filter cover 325.

[0036] Working Principle: During use, the overall installation height of this structure should be lower than the installation height of the reducer. Connect the end of the output hose 26 furthest from the valve 25 to the top of the reducer housing, and connect the end of the return hose 327 furthest from the movable cover 326 to the bottom of the reducer housing. Control the oil pump 23 to operate, drawing lubricating oil from the oil reservoir 22 and delivering it to the distribution pipe 24. The lubricating oil in the distribution pipe 24 then flows through the valve 25 and the output hose 26, entering the interior of multiple reducers. The lubricating oil then flows to the surface of the gear assembly under gravity, achieving lubrication. The lubricating oil that comes into contact with the internal components of the reducer will flow to the gear assembly under gravity. At the bottom of the gearbox housing, the lubricating oil flows back through the return hose 327 to the inner cavity of the purification channel 32. It then passes through the lubricating oil filter cover 325 to filter out impurities such as debris generated by the friction of the gear assembly. The lubricating oil inside the purification channel 32 flows back through the inner cavity of the cooling channel 31 under the action of gravity to the oil storage tank 22. During this process, the lubricating oil can be guided by the inclined guide plate 313 to make it flow in a tortuous manner at the top. At this time, the axial flow fan 312 is controlled to work, which can draw in air and then deliver it to the connecting cover 311. The air then flows through the inner cavity of the fitting groove 315 and the strip groove 314. At this time, the air can exchange heat with the lubricating oil, reducing the temperature of the lubricating oil.

[0037] The above embodiments are only used to illustrate the technical solution of this utility model, and are not intended to limit it.

Claims

1. A lubricating oil circulation structure for a hardened gear reducer, characterized in that, include: Base (1); A single-pump oil supply mechanism (2) is provided on the top of the base (1) and is used to deliver lubricating oil to the inside of the reducer. Oil return treatment mechanism (3) is located on top of single pump oil supply mechanism (2) and is used to treat the lubricating oil that flows back inside the reducer.

2. The lubricating oil circulation structure of a hardened gear reducer according to claim 1, characterized in that: The single-pump oil supply mechanism (2) includes a support frame (21), which is fixedly installed on the top of the base (1). An oil storage tank (22) is fixedly installed on the inner wall of the support frame (21), and a circular transparent plate (221) is fixedly installed on the inner wall of the oil storage tank (22) near the top.

3. The lubricating oil circulation structure of a hardened gear reducer according to claim 2, characterized in that: The single-pump oil supply mechanism (2) also includes an oil pump (23), which is fixedly installed on the top of the base (1). The input end of the oil pump (23) is fixedly connected to the bottom of the oil storage tank (22). The output end of the oil pump (23) is detachably connected to a diversion pipe (24). A valve (25) is fixedly connected to the side of the diversion pipe (24) away from the oil pump (23). An output hose (26) is threadedly connected to the end of the valve (25) away from the diversion pipe (24). A support pad (27) is fixedly installed at the bottom of the diversion pipe (24). The support pad (27) is movably connected to the top of the base (1).

4. The lubricating oil circulation structure of a hardened gear reducer according to claim 2, characterized in that: The oil return treatment mechanism (3) includes a cooling channel (31), which is fixedly connected to the top of the oil storage tank (22). A connecting cover (311) is fixedly connected to the back of the cooling channel (31), and an axial flow fan (312) is fixedly connected to the back of the connecting cover (311).

5. The lubricating oil circulation structure of a hardened gear reducer according to claim 4, characterized in that: An inclined guide plate (313) is fixedly installed on the inner wall of the cooling channel (31). A strip groove (314) is opened inside the inclined guide plate (313). A fitting groove (315) is opened on both the front and back of the connecting cover (311).

6. The lubricating oil circulation structure of a hardened gear reducer according to claim 5, characterized in that: A purification channel (32) is fixedly connected to the top of the cooling channel (31). An inner partition (321) is fixedly installed on the inner wall of the purification channel (32). A groove (322) is opened on the top of the inner partition (321). A magnetic block (323) is fixedly installed on the inner wall of the groove (322). A movable ring (324) is movably inserted into the inner cavity of the groove (322). The bottom of the movable ring (324) is magnetically connected to the top of the magnetic block (323). A lubricating oil filter cover (325) is fixedly connected to the bottom of the movable ring (324).

7. The lubricating oil circulation structure of a hardened gear reducer according to claim 6, characterized in that: The top of the purification channel (32) is movably connected to a movable cover (326), and the top of the movable cover (326) is threadedly connected to a return hose (327).