Automatic cooling type speed reducer
The problem of low heat transfer efficiency of the reducer housing was solved by the lubricating oil flow circuit, achieving a uniform and efficient cooling effect, avoiding fan blockage, and ensuring the heat dissipation performance of the reducer.
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- TIANJIN JUGANG REDUCER MFG CO LTD
- Filing Date
- 2025-05-28
- Publication Date
- 2026-04-28
AI Technical Summary
The existing gearbox housing has low heat transfer efficiency, and the air inlet of the fan is easily blocked during use, which affects the heat dissipation and cooling effect.
The lubricating oil flow circuit is adopted, and the lubricating oil dissipates heat through contact with the gear. After carrying the heat, it enters the impurity removal part to remove iron filings and impurities, and then passes through the cooling cylinder to cool and flow back to the oil reservoir, thus forming a lubricating oil flow circuit to achieve uniform cooling.
It improves heat dissipation, has strong heat storage capacity of lubricating oil, and ensures uniform flow and contact with gears, thus guaranteeing the uniformity and cleanliness of the reducer's cooling.
Smart Images

Figure CN224174521U_ABST
Abstract
Description
Technical Field
[0001] This application relates to the technical field of speed reducers, and in particular to an automatic cooling speed reducer. Background Technology
[0002] A speed reducer is an independent component consisting of gear transmission, worm transmission, or gear-worm transmission enclosed in a rigid housing. It is commonly used as a speed reduction transmission device between the prime mover and the working machine, and plays a role in matching speed and transmitting torque between the prime mover and the working machine or actuator. It is widely used in modern machinery, and gear reducers are one type of speed reducer. They have advantages such as small size, large torque transmission, high transmission efficiency, and good cooling effect.
[0003] The existing announcement number is CN213393359U, entitled "A Self-Cooling Reducer." It features a fan slot at the bottom of the reducer, inside which a cooling fan can be detachably installed. When the reducer is in use, the cooling fan blows cool air through the air inlet into the mounting slot, rapidly cooling the internal structure of the reducer housing. Water-cooling pipes are installed within the housing cavity; filling these pipes with water quickly cools the internal components of the reducer. The reducer incorporates both a cooling fan and water-cooling pipes, allowing users to choose between fan cooling or water-cooling depending on the cleanliness of the environment. This design ensures that dust and foreign objects do not enter the reducer during cooling, resulting in a reasonable structure and effective cooling.
[0004] Regarding the aforementioned technologies, the inventors discovered that while a fan can dissipate heat from the reducer plate, the reducer housing has low thermal conductivity, and dust residue can remain at the air inlet during fan use. After prolonged use, the air inlet is prone to blockage, which affects the heat dissipation and cooling effect. Utility Model Content
[0005] In order to overcome the problems of existing methods that use fans to dissipate heat from the gearbox body, but the low heat conduction efficiency of the gearbox housing and the dust residue at the air inlet during use, which can easily lead to blockage of the air inlet after long-term use, thus affecting the heat dissipation and cooling effect, this application provides an automatic cooling gearbox.
[0006] The automatic cooling speed reducer provided in this application adopts the following technical solution:
[0007] An automatic cooling reducer includes a reducer body, a cleaning component, and an oil return component. The reducer body has a horizontally connected and fixed oil outlet helical pipe on its lower housing, and an oil return port is provided through the upper housing. The cleaning component includes a guide cylinder and a cleaning cylinder. One end of the guide cylinder is connected and assembled onto the oil outlet helical pipe, and the other end of the guide cylinder is connected and assembled onto the cleaning cylinder. One end of the cleaning cylinder is open, and an oil drain pipe is vertically connected and fixed on the outer wall of the cleaning cylinder away from the open end. The oil return component includes an oil reservoir. Both ends of the oil reservoir are connected and fixed with conduits. An oil pump is connected and fixed to one end of the conduit of the oil reservoir. A sealing plate is fixed through the end of one end of the conduit of the oil reservoir and is fixed to the oil return port of the reducer body. A cooling cylinder is vertically connected and fixed to the other end of the conduit of the oil reservoir, and the other end of the cooling cylinder is connected and fixed to the oil drain pipe.
[0008] By adopting the above technical solution, during use, one end of the conduit on the impurity removal component is connected to the oil outlet screw pipe on the reducer body. Then, one end of the conduit of the oil reservoir in the oil return component is connected and fixed to the oil return port on the reducer body. Then, the other end of the conduit of the oil reservoir in the oil return component is connected and fixed to the cooling cylinder and the oil drain pipe on the impurity removal cylinder. The impurity removal component, the oil return component, and the reducer body form a lubricating oil flow circuit. Lubricating oil is added to the oil reservoir and enters the reducer body. The lubricating oil contacts the gears for heat dissipation. Then, the lubricating oil carrying heat enters the impurity removal component to remove iron filings and impurities. Then, the lubricating oil passes through the cooling cylinder to cool and remove heat from the lubricating oil. Then, the lubricating oil flows back into the oil reservoir and the reducer body. Thus, the lubricating oil flows through the impurity removal component, the oil return component, and the reducer body to dissipate heat from the reducer body. Compared with traditional wind-powered cooling, the lubricating oil has a strong heat storage capacity and flows evenly to contact the gears, ensuring uniform cooling of the reducer body.
[0009] Optionally, the inner wall of the impurity removal cylinder is provided with an internal thread on the side near the opening, and a filter cylinder is horizontally and fixedly inserted inside the impurity removal cylinder.
[0010] By adopting the above technical solution, the internal thread at the opening of the impurity removal cylinder is used to assemble the connecting conduit, guide the oil into the impurity removal cylinder for impurity removal, and at the same time, the filter cartridge inside the impurity removal cylinder filters the returning lubricating oil to remove impurities.
[0011] Optionally, both ends of the guide tube are connected and fixed with screw rings, and one end of the guide tube has a screw ring threaded onto the oil outlet screw pipe.
[0012] By adopting the above technical solution, the threaded ring at the end of the guide cylinder is assembled on the oil outlet screw pipe, which facilitates the assembly of the connecting guide cylinder and the impurity removal cylinder.
[0013] Optionally, the threaded ring at the other end of the guide tube is connected to the internal thread at the opening of the impurity removal cylinder.
[0014] By adopting the above technical solution, the threaded ring at one end of the guide tube is connected to the internal thread at the opening of the impurity removal cylinder, thus connecting the guide tube and the impurity removal cylinder.
[0015] Optionally, a magnetic rod is horizontally inserted inside the impurity removal cylinder, and one end of the magnetic rod is fixed to the inner end face of the impurity removal cylinder.
[0016] By adopting the above technical solution, the magnetic rod installed inside the impurity removal cylinder magnetically adsorbs iron filings in the lubricating oil that flows back into the impurity removal cylinder, thus ensuring the cleanliness of the lubricating oil return.
[0017] Optionally, an air guide tube is fixedly fitted to the outside of the cooling cylinder, and an exhaust hole is opened through the bottom of the air guide tube, and multiple fans are fixedly fitted through the top of the air guide tube.
[0018] By adopting the above technical solution, when the cooling cylinder is cooled by the fixed air guide tube, the returning lubricating oil comes into contact with the cooling cylinder wall, and the heat is transferred to the outer wall of the cooling cylinder. The multiple fans at the top of the air guide tube are activated to drive the outside air into the air guide tube. The flowing air comes into contact with the outer wall of the cooling cylinder and carries the heat away from the exhaust port.
[0019] Optionally, multiple perforated plates are horizontally arranged on the outer wall of the cooling cylinder along the vertical direction, and the multiple perforated plates penetrate the cooling cylinder.
[0020] By adopting the above technical solution, in order to increase the cooling efficiency of the returning lubricating oil, the multi-perforated plate is set to increase the air contact area of the cooling cylinder.
[0021] Optionally, a piece of cloth is inserted into the inner wall of the filter cartridge, and the cloth is fixed to the inner wall of the filter cartridge.
[0022] By adopting the above technical solution, a cloth is inserted into the inner wall of the filter cartridge. The presence of the cloth facilitates further filtration and removal of iron filings from the returned lubricating oil.
[0023] In summary, this application includes at least one of the following beneficial technical effects:
[0024] In operation, one end of the conduit on the impurity removal component is connected to the oil outlet screw on the reducer body. Then, one end of the conduit in the oil reservoir of the oil return component is connected and fixed to the oil return port on the reducer body. The other end of the conduit in the oil reservoir of the oil return component is connected and fixed to the cooling cylinder and the oil drain pipe on the impurity removal cylinder. The impurity removal component, the oil return component, and the reducer body form a lubricating oil flow circuit. Lubricating oil is added to the oil reservoir and enters the reducer body. The lubricating oil contacts the gears for heat dissipation. Then, the lubricating oil carrying heat enters the impurity removal component to remove iron filings and impurities. The lubricating oil then passes through the cooling cylinder to cool and remove heat. Finally, the lubricating oil flows back into the oil reservoir and the reducer body. Thus, the lubricating oil flows through the impurity removal component, the oil return component, and the reducer body to dissipate heat from the reducer body. Compared with traditional wind-powered cooling, the lubricating oil has a stronger heat storage capacity and flows evenly to the gears, ensuring uniform cooling of the reducer body. Attached Figure Description
[0025] Figure 1 This is a schematic diagram of the overall structure of an embodiment of this application;
[0026] Figure 2 This is a schematic diagram of the overall structure of the embodiment of this application in an exploded state;
[0027] Figure 3 This is a schematic diagram of the reducer body in an disassembled state according to an embodiment of this application;
[0028] Figure 4 This is a schematic diagram of the structure of the cleaning component in the disassembled state according to an embodiment of this application;
[0029] Figure 5 This is a schematic diagram of the oil return component in the disassembled state according to an embodiment of this application.
[0030] Explanation of reference numerals in the attached drawings: 1. Reducer body; 11. Oil outlet solenoid; 12. Oil return port; 2. Cleaning component; 21. Guide cylinder; 22. Threaded ring; 23. Cleaning cylinder; 231. Internal thread; 232. Oil drain pipe; 24. Filter cartridge; 25. Cloth sheet; 26. Magnetic rod; 3. Oil return component; 31. Oil reservoir; 32. Oil pump; 33. Cooling cylinder; 331. Orifice plate; 34. Air guide duct; 341. Fan; 35. Sealing plate. Detailed Implementation
[0031] The present application will be further described in detail below with reference to the accompanying drawings.
[0032] This application discloses an automatic cooling speed reducer. (Refer to...) Figure 1 , Figure 2 , Figure 3 and Figure 4An automatic cooling speed reducer includes a speed reducer body 1, a cleaning component 2, and an oil return component 3. An oil outlet helical pipe 11 is horizontally connected and fixed to the lower side of the casing of the speed reducer body 1, and an oil return port 12 is provided through the upper side of the casing of the speed reducer body 1. The cleaning component 2 includes a guide cylinder 21 and a cleaning cylinder 23. One end of the guide cylinder 21 is connected and assembled to the oil outlet helical pipe 11, and the other end of the guide cylinder 21 is connected and assembled to the cleaning cylinder 23. One end of the cleaning cylinder 23 is open, and the outer wall of the cleaning cylinder 23 is far from... One end of the oil reservoir is vertically connected to and fixed with an oil drain pipe 232. The oil return component 3 includes an oil reservoir 31. Both ends of the oil reservoir 31 are connected to and fixed with conduits. An oil pump 32 is connected to and fixed on one end of the conduit of the oil reservoir 31. A sealing plate 35 is fixed through and fixed to the end of one end of the conduit of the oil reservoir 31. The sealing plate 35 is fixed on the oil return port 12 of the reducer body 1. A cooling cylinder 33 is vertically connected to and fixed on the other end of the conduit of the oil reservoir 31. The other end of the cooling cylinder 33 is connected to and fixed on the oil drain pipe 232.
[0033] By adopting the above technical solution, during use, one end of the conduit 21 on the impurity removal component 2 is connected to the oil outlet screw pipe 11 on the reducer body 1. Then, one end of the conduit of the oil reservoir 31 in the oil return component 3 is connected and fixed in the oil return port 12 on the reducer body 1. Then, the other end of the conduit of the oil reservoir 31 in the oil return component 3 is connected and fixed to the cooling cylinder 33 and the oil drain pipe 232 on the impurity removal cylinder 23. The impurity removal component 2, the oil return component 3, and the reducer body 1 form a lubricating oil flow circuit. Lubricating oil is added to the oil reservoir 3, and the lubricating oil enters the reducer body 1. The lubricating oil is cooled by contact with the gears. Then, the lubricating oil carrying heat enters the impurity removal part 2 to remove iron filings and impurities. The lubricating oil is then cooled by the cooling cylinder 33 to remove heat. The lubricating oil then flows back into the oil storage cylinder 31 and the reducer body 1. Thus, the lubricating oil flows through the impurity removal part 2, the oil return part 3, and the reducer body 1 to cool the reducer body 1. Compared with traditional wind cooling, the lubricating oil has a strong heat storage capacity and flows evenly to contact the gears, ensuring uniform cooling of the reducer body 1.
[0034] Reference Figure 4The inner wall of the impurity removal cylinder 23 has an internal thread 231 near the opening, and a filter cartridge 24 is horizontally fixed inside the impurity removal cylinder 23. The internal thread 231 at the opening of the impurity removal cylinder 23 is used to assemble the connecting conduit 21, guiding oil into the impurity removal cylinder 23 for impurity removal. At the same time, the filter cartridge 24 inside the impurity removal cylinder 23 filters and removes impurities from the returning lubricating oil. Both ends of the guide cylinder 21 are connected and fixed with threaded rings 22, and one end of the guide cylinder 21 is threadedly assembled onto the oil outlet screw pipe 11. The threaded ring 22 at the end of the guide cylinder 21 is threaded onto the oil outlet screw pipe 11, facilitating the assembly of the connecting guide cylinder 21 and the impurity removal cylinder 23. The other end of the guide cylinder 21 is connected to the internal thread 231 at the opening of the impurity removal cylinder 23. The connecting conduit 21 and the impurity removal cylinder 23 are thus connected.
[0035] Reference Figure 4 A magnetic rod 26 is horizontally inserted inside the impurity removal cylinder 23, with one end of the magnetic rod 26 fixed to the inner end face of the impurity removal cylinder 23. The magnetic rod 26 inside the impurity removal cylinder 23 magnetically attracts iron filings in the lubricating oil flowing back into the impurity removal cylinder 23, ensuring the cleanliness of the lubricating oil returning to the cylinder.
[0036] Reference Figure 5 A guide duct 34 is fixedly fitted around the cooling cylinder 33, with an exhaust port extending through its bottom end and multiple fans 341 fixedly fitted through its top end. When cooling the returning lubricating oil, the guide duct 34 cools the returning lubricating oil. The oil contacts the wall of the cooling cylinder 33, transferring heat to the outer wall. The fans 341 at the top of the guide duct 34 then draw in outside air, which in turn contacts the outer wall, carrying heat away through the exhaust port. Multiple perforated plates 331 are horizontally arranged along the vertical direction on the outer wall of the cooling cylinder 33, extending throughout the cylinder. These perforated plates increase the air contact area and improve the cooling efficiency of the returning lubricating oil.
[0037] Reference Figure 4 A cloth sheet 25 is inserted into the inner wall of the filter cartridge 24 and is fixed to the inner wall of the filter cartridge 24. The presence of the cloth sheet 25 facilitates further filtration to remove iron filings from the returned lubricating oil.
[0038] The implementation principle of an automatic cooling reducer according to an embodiment of this application is as follows: During use, one end of the conduit 21 on the impurity removal component 2 is connected to the oil outlet screw pipe 11 on the reducer body 1. Then, one end of the conduit of the oil storage cylinder 31 in the oil return component 3 is connected and fixed to the oil return port 12 on the reducer body 1. Then, the other end of the conduit of the oil storage cylinder 31 in the oil return component 3 is connected and fixed to the cooling cylinder 33, which is connected to the oil drain pipe 232 on the impurity removal cylinder 23. The impurity removal component 2, the oil return component 3, and the reducer body 1 form a lubricating oil flow circuit. Lubricating oil is added to the oil storage cylinder 3, and the lubricating oil enters the reducer body 1. The lubricating oil contacts the gears for heat dissipation. Then, the lubricating oil carrying heat enters the impurity removal component 2 to remove iron filings and impurities. The lubricating oil then passes through the cooling cylinder 33 to cool and remove heat. Finally, the lubricating oil flows back into the oil storage cylinder 31 and the reducer body 1. Thus, the lubricating oil forms a lubrication circuit in the impurity removal component 2, the oil return component 3, and the reducer body 1. The oil flow circuit dissipates heat from the reducer body 1. The internal thread 231 at the opening of the impurity removal cylinder 23 is used to assemble the connecting conduit 21, guiding the oil into the impurity removal cylinder 23 for impurity removal. At the same time, the filter cartridge 24 inside the impurity removal cylinder 23 filters the returning lubricating oil to remove impurities. The threaded ring 22 at the end of the guide cylinder 21 is threaded onto the oil outlet screw pipe 11, facilitating the assembly of the connecting guide cylinder 21 and the impurity removal cylinder 23. The magnetic rod 26 inside the impurity removal cylinder 23 magnetically attracts iron filings in the lubricating oil returning into the impurity removal cylinder 23, ensuring the cleanliness of the returning lubricating oil. The cooling cylinder 33 is fitted with a fixed air guide 34. When cooling the returning lubricating oil, the returning lubricating oil contacts the wall of the cooling cylinder 33, and the heat is transferred to the outer wall of the cooling cylinder 33. The multiple fans 341 at the top of the air guide 34 are activated to drive external air into the air guide 34. The flowing air contacts the outer wall of the cooling cylinder 33, carrying the heat and dissipating it from the exhaust port.
[0039] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.
Claims
1. An automatic cooling speed reducer, characterized in that, The device includes a reducer body (1), a cleaning component (2), and an oil return component (3). The reducer body (1) has an oil outlet screw pipe (11) horizontally connected and fixed on the lower side of its housing, and an oil return port (12) is provided through the upper side of its housing. The cleaning component (2) includes a guide cylinder (21) and a cleaning cylinder (23). One end of the guide cylinder (21) is connected and assembled on the oil outlet screw pipe (11), and the other end of the guide cylinder (21) is connected and assembled with the cleaning cylinder (23). One end of the cleaning cylinder (23) is open, and the outer wall of the cleaning cylinder (23) is open on the side away from the open end. A vertically connected and fixed oil drain pipe (232) is provided. The oil return component (3) includes an oil reservoir (31). Both ends of the oil reservoir (31) are connected and fixed with conduits. An oil pump (32) is connected and fixed on one end of the conduit of the oil reservoir (31). A sealing plate (35) is fixed through the end of one end of the conduit of the oil reservoir (31). The sealing plate (35) is fixed on the oil return port (12) of the reducer body (1). A cooling cylinder (33) is vertically connected and fixed on the other end of the conduit of the oil reservoir (31). The other end of the cooling cylinder (33) is connected and fixed on the oil drain pipe (232).
2. The automatic cooling reducer according to claim 1, characterized in that: The inner wall of the impurity removal cylinder (23) is provided with an internal thread (231) on the side near the opening, and a filter cylinder (24) is horizontally fixed inside the impurity removal cylinder (23).
3. The automatic cooling reducer according to claim 2, characterized in that: Both ends of the guide tube (21) are connected and fixed with screw rings (22), and one end of the guide tube (21) is threadedly assembled onto the oil outlet screw pipe (11).
4. The automatic cooling reducer according to claim 3, characterized in that: The threaded ring (22) at the other end of the guide tube (21) is connected to the internal thread (231) at the opening of the impurity removal tube (23).
5. The automatic cooling reducer according to claim 2, characterized in that: A magnetic rod (26) is horizontally inserted inside the impurity removal cylinder (23), and one end of the magnetic rod (26) is fixed to the inner end face of the impurity removal cylinder (23).
6. The automatic cooling reducer according to claim 1, characterized in that: The cooling cylinder (33) is fitted with a guide tube (34) and an exhaust hole is opened through the bottom end of the guide tube (34). Multiple fans (341) are fixed through the top end of the guide tube (34).
7. The automatic cooling reducer according to claim 6, characterized in that: Multiple perforated plates (331) are horizontally arranged on the outer wall of the cooling cylinder (33) in the vertical direction, and the multiple perforated plates (331) penetrate the cooling cylinder (33).
8. The automatic cooling reducer according to claim 2, characterized in that: A cloth piece (25) is inserted into the inner wall of the filter cartridge (24), and the cloth piece (25) is fixed on the inner wall of the filter cartridge (24).
Citation Information
Patent Citations
Self-cooling speed reducer
CN213393359U