A small gear reducer for mechanical equipment

Abstract

The present invention belongs to the technical field of reducers, and discloses a small gear reducer for mechanical equipment, including a lower shell, an upper shell fixedly installed at the top of the lower shell, an input shaft and an output shaft movably connected in the middle of the lower shell and the upper shell, a driving gear and a reduction gear fixedly installed in the middle of the input shaft and the output shaft, respectively, and a transmission wheel fixedly installed at the front end of the input shaft. The present invention drives the transmission shaft to rotate through the input shaft, so that the fan blades rotate in the inner cavity of the fixed box, thereby drawing the outside air into the fixed box through the air inlet pipe, and then entering the connecting groove after rotating in the fixed box, entering the air distribution groove and the heat dissipation groove through the connecting groove and flowing from bottom to top, and finally discharged through the air outlet. Since the cold air from the outside continuously enters the heat dissipation groove, so that the cold air always flows in the heat dissipation groove for heat dissipation, there is no need to set a connecting water pipe and add coolant, which is convenient for installation and use.

Description

Technical Field

[0001] The invention belongs to the technical field of reducers, and in particular relates to a small gear type reducer for mechanical equipment. Background Art

[0002] A gear reducer is a device that reduces speed by gear transmission within a rigid housing. Small gear reducers are characterized by their small size and are usually installed on some precision mechanical equipment to reduce power.

[0003] Existing small gear reducers generate a lot of heat when in use. In order to prevent the device from overheating and damage, cooling pipes are usually installed on the inner wall of the shell to dissipate heat. Most cooling pipes form a loop to circulate the coolant. However, in order to ensure that the coolant can continuously dissipate heat, most small gear reducers usually need to be equipped with a cooling box to cool the heated coolant. During installation, it is necessary to connect the cooling water pipe and add coolant, which increases the installation steps of the device and is inconvenient to install and use the device.

[0004] When existing small gear reducers are in use, in order to reduce the wear of the gears, lubricating oil is usually added to the housing for lubrication and protection. However, the lubricating oil needs to be replaced regularly. When adding new lubricating oil, since the volume of the lubricating oil added to the housing cannot be directly observed, too much lubricating oil may be added. Too much lubricating oil will reduce the heat dissipation effect of the gears. Therefore, it is necessary to extract the excess lubricating oil. However, the lubricating oil that has entered the housing has been in contact with the housing. The quality of the extracted lubricating oil is lower than that of the unadded lubricating oil. Pouring it into the oil pot will cause contamination of the unadded lubricating oil, thereby resulting in waste of lubricating oil.

[0005] When the existing small gear reducer is in use, the speed reduction is achieved through gear transmission, and the positions of the output shaft and the input shaft in the housing are fixed. Therefore, the rotation direction of the output shaft of most small gear reducers is fixed and can only rotate in one direction. Different rotation directions cannot be selected for use according to actual conditions, thereby reducing the scope of use of the device. Summary of the invention

[0006] The object of the present invention is to provide a small gear reducer for mechanical equipment to solve the problems raised in the above background technology.

[0007] In order to achieve the above-mentioned purpose, the present invention provides the following technical solutions: a small gear reducer for mechanical equipment, comprising a lower shell, the top of the lower shell is fixedly installed with an upper shell, the middle of the lower shell and the upper shell are movably connected with an input shaft and an output shaft, the middle of the input shaft and the output shaft are respectively fixedly installed with a driving gear and a reduction gear, the front end of the input shaft is fixedly installed with a transmission wheel, the inner cavity of the lower shell is movably connected with a transmission shaft, the surface of the transmission wheel and the transmission shaft is transmission-connected with a transmission belt, the front end of the transmission shaft is fixedly installed with a fan blade, the front side of the lower shell is fixedly installed with a fixing box, and the bottom of the fixing box is fixedly installed with a fan blade, and the front side of the lower shell is fixedly installed with a fixing box. An intake pipe is fixedly installed at the end, and the rotation of the input shaft drives the transmission wheel to rotate, and the transmission wheel and the transmission shaft are connected by a transmission belt, thereby driving the transmission shaft to rotate. When the transmission shaft rotates, it drives the fan blades to rotate in the inner cavity of the fixed box, thereby drawing the outside air into the fixed box through the intake pipe, and a connecting groove is provided at the front end of the lower shell body, and the side walls of the lower shell body and the upper shell body are provided with air distribution grooves and heat dissipation grooves, and the top of the upper shell body is provided with an air outlet, and an adding pipe is fixedly installed on the top surface of the upper shell body. Open the adding pipe, pour out the inner cavity of the lower shell body and the upper shell body, and then add new lubricating oil to the inner cavity of the lower shell body and the upper shell body through the adding pipe.

[0008] Preferably, a communicating hole is provided at the bottom end of the lower shell body, a limiting ring is fixedly installed in the inner cavity of the communicating hole, a blocking shaft is movably connected to the inner cavity of the communicating hole, a pulling plate is fixedly installed at the front end of the blocking shaft, a positioning shaft is fixedly installed at the front side surface of the lower shell body, a return spring is movably sleeved on the surface of the positioning shaft, and a lifting plate is movably connected to the inner cavity of the lower shell body. When the liquid level of the lubricating oil is lower than the standard liquid level, the air outlet is blocked, and then the pulling plate is pulled forward to make the pulling plate drive the blocking shaft to move forward, thereby moving the blocking shaft to the front side of the air distribution groove, and the output is started at this time. The air inlet is closed and the air below the lifting plate passes through the connecting hole and moves upward, thereby raising the liquid level. When the lubricating oil level is higher than the standard level, the air outlet is opened and the pull plate is pulled forward so that the blocking shaft is located at the front side of the air outlet. At this time, the gravity of the lubricating oil and the lifting plate can push the lifting plate downward, so that the air below the lifting plate passes through the connecting hole and enters the heat dissipation groove. When the lifting plate descends, the liquid level of the lubricating oil can be lowered.

[0009] Preferably, a gear ring is fixedly installed on the front end of the output shaft, a redirecting sleeve is movably sleeved on the outer side of the output shaft, a steering gear is fixedly installed on the front side of the inner cavity of the redirecting sleeve, a planetary gear is movably connected to the front side of the inner cavity of the redirecting sleeve, a bearing is fixedly installed on the front end of the lower shell body, and a magnetic ring is fixedly installed on the front side of the outer wall of the bearing. When connecting an external device to the output shaft, the redirecting sleeve can be directly pulled out forward to separate the redirecting sleeve from the magnetic ring. After separation, the external device can be directly installed on the output shaft for transmission.

[0010] Preferably, the output shaft is located on the left side of the input shaft, the front end of the output shaft passes through and extends to the front side of the lower shell body, the rear end of the input shaft passes through and extends to the rear side of the lower shell body, the reduction gear is meshed with the driving gear, and the rear end of the input shaft is connected to the input device, the input device drives the input shaft to rotate, and when the input shaft rotates, it drives the output shaft to rotate through the meshing of the driving gear and the reduction gear. Since the diameter value of the reduction gear is larger than the diameter value of the driving gear, the speed of the output shaft is smaller than the speed of the input shaft, thereby achieving speed reduction.

[0011] Preferably, the fan blades are movably connected in the inner cavity of a fixed box, and the fixed box is connected to the air dividing groove through a connecting groove, and the air dividing groove is connected to the heat dissipation groove. After rotating in the fixed box, the fan blades enter the connecting groove, enter the air dividing groove and the heat dissipation groove through the connecting groove, and then flow from bottom to top in the heat dissipation groove to the air dividing groove in the upper shell, and finally are discharged through the air outlet. Since the cold air from the outside continuously enters the heat dissipation groove, the cold air always flows in the heat dissipation groove, and when the cold air flows, the heat can be brought out from the air outlet.

[0012] Preferably, the top end of the pull plate is movably connected to the surface of the positioning shaft, and the front and rear ends of the reset spring are respectively fixedly mounted on the rear side of the pull plate and the front side of the lower shell. After releasing the pull plate, the elasticity of the reset spring drives the pull plate to move backward, thereby driving the blocked shaft to move backward to the bottom of the air dividing groove, thereby realizing the reset of the blocked shaft and the closure of the connecting hole.

[0013] Preferably, the lifting plate is located below the driving gear and the reduction gear, the side wall of the lifting plate is in contact with the inner wall of the lower shell, and the lifting plate is located above the connecting hole to prevent the driving gear and the reduction gear from contacting the lifting plate when rotating, thereby preventing abnormal noise from the device and ensuring that the air entering the bottom of the lifting plate from the connecting hole will not enter the lifting plate, thereby ensuring the normal lifting of the lifting plate.

[0014] Preferably, there are two limiting rings, which are respectively located at the front and rear sides of the front end of the air dividing groove. The blocking shaft is movably connected in the middle of the two limiting rings. The diameter of the blocking shaft is equal to the diameter of the connecting hole. The limiting ring positions the forward and backward movement of the blocking shaft, thereby preventing the blocking shaft from falling off from the connecting hole.

[0015] Preferably, the steering gear is meshed with the planetary gear, and the planetary gear is meshed with the ring gear. There are three planetary gears in total, and the three planetary gears are distributed at equal angles around the axis of the output shaft. When the output shaft rotates, the ring gear is driven to rotate through the meshing of the ring gear and the planetary gear, and the redirecting sleeve is driven to rotate in the opposite direction of the output shaft through the meshing of the planetary gear and the steering gear.

[0016] Preferably, the inner diameter of the magnetic ring is equal to the inner diameter of the redirecting sleeve, the outer diameter of the magnetic ring is equal to the outer diameter of the redirecting sleeve, the magnetic ring is connected to the rear end of the redirecting sleeve by magnetism, the redirecting sleeve is inserted on the outside of the output shaft, the magnetic ring and the redirecting sleeve are fitted, the magnetism between the magnetic ring and the redirecting sleeve is used to position the rear end of the redirecting sleeve, and the planetary gear is meshed with the ring gear, and the front end of the redirecting sleeve is positioned by the planetary gear, thereby fixing the redirecting sleeve.

[0017] The beneficial effects of the present invention are as follows:

[0018] 1. The present invention drives the transmission wheel to rotate while the input shaft rotates, and drives the transmission shaft to rotate through the transmission belt, so that the fan blades rotate in the inner cavity of the fixed box, thereby drawing the outside air into the fixed box through the air inlet pipe, and then entering the connecting groove after rotating in the fixed box, entering the air separation groove and the heat dissipation groove through the connecting groove and flowing from bottom to top, and finally being discharged through the air outlet. Since the outside cold air continuously enters the heat dissipation groove, the cold air always flows in the heat dissipation groove for heat dissipation, and there is no need to set a connecting water pipe and add coolant, which is convenient for installation and use.

[0019] 2. The present invention blocks the air outlet and then pulls the pull plate forward so that the pull plate drives the blocking shaft to move forward, thereby moving the blocking shaft to the front side of the air dividing groove. At this time, the input device is started to drive the fan blades to rotate. Since the air outlet is closed, the air drawn into the air dividing groove enters the bottom of the lifting plate through the rear end of the connecting hole. As the air continues to enter, the lifting plate continues to move upward to raise the liquid level. When the liquid level of the lubricating oil is higher than the standard liquid level, the air outlet is in an open state. Then the pull plate is pulled forward so that the blocking shaft is located at the front side of the air dividing groove. At this time, the gravity of the lubricating oil and the lifting plate can push the lifting plate downward, so that the air below the lifting plate enters the heat dissipation groove through the connecting hole, thereby lowering the liquid level of the lubricating oil, so that there is no need to extract excess lubricating oil, thereby avoiding waste of lubricating oil.

[0020] 3. The present invention separates the redirecting sleeve from the magnetic ring by pulling the redirecting sleeve forward. After separation, the external device can be directly installed on the output shaft for transmission, or the redirecting sleeve can be inserted on the outside of the output shaft to make the magnetic ring fit with the redirecting sleeve to fix the redirecting sleeve. At this time, when the output shaft rotates, the engagement of the ring gear and the planetary gear drives the ring gear to rotate, and the engagement of the planetary gear and the steering gear drives the redirecting sleeve to rotate in the opposite direction of the output shaft, so that the device can change the rotation direction of the output power according to actual conditions, thereby increasing the scope of use of the device. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the structure of the present invention;

[0022] Figure 2 This is a schematic diagram of the explosion connection of the upper shell of the structure of the present invention;

[0023] Figure 3 This is a schematic diagram of the explosion connection of the redirection sleeve of the structure of the present invention;

[0024] Figure 4 The structure of the present invention Figure 3 The enlarged schematic diagram at A in the middle;

[0025] Figure 5 This is a schematic diagram of the explosion connection of the reduction gear structure of the present invention;

[0026] Figure 6 It is a cross-sectional schematic diagram of the lower shell of the structure of the present invention;

[0027] Figure 7 This is a cross-sectional schematic diagram of the heat dissipation slot structure of the present invention;

[0028] Figure 8 The structure of the present invention Figure 7 Enlarged schematic diagram of point B in the middle.

[0029] In the figure: 1. lower shell; 2. upper shell; 3. input shaft; 4. output shaft; 5. driving gear; 6. reduction gear; 7. transmission wheel; 8. transmission shaft; 9. transmission belt; 10. fan blade; 11. fixing box; 12. air inlet pipe; 13. connecting groove; 14. air distribution groove; 15. heat dissipation groove; 16. air outlet; 17. adding pipe; 18. connecting hole; 19. limiting ring; 20. blocking shaft; 21. pulling plate; 22. positioning shaft; 23. reset spring; 24. gear ring; 25. redirecting sleeve; 26. steering gear; 27. planetary gear; 28. bearing; 29. ​​magnetic ring; 30. lifting plate. DETAILED DESCRIPTION

[0030] 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 described embodiments 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 creative work are within the scope of protection of the present invention.

[0031] like Figures 1 to 8 As shown, in the embodiment of the present invention, a small gear reducer for mechanical equipment includes a lower shell 1, an upper shell 2 is fixedly installed on the top of the lower shell 1, an input shaft 3 and an output shaft 4 are movably connected in the middle of the lower shell 1 and the upper shell 2, a driving gear 5 and a reduction gear 6 are fixedly installed in the middle of the input shaft 3 and the output shaft 4, respectively, a transmission wheel 7 is fixedly installed at the front end of the input shaft 3, a transmission shaft 8 is movably connected to the inner cavity of the lower shell 1, a transmission belt 9 is connected to the surface of the transmission wheel 7 and the transmission shaft 8, a fan blade 10 is fixedly installed at the front end of the transmission shaft 8, a fixing box 11 is fixedly installed on the front side of the lower shell 1, an air intake pipe 12 is fixedly installed on the bottom end of the fixing box 11, and the input shaft 3 is rotatable. When it rotates, it drives the transmission wheel 7 to rotate, and the transmission wheel 7 and the transmission shaft 8 are connected through the transmission belt 9, thereby driving the transmission shaft 8 to rotate. When the transmission shaft 8 rotates, it drives the fan blades 10 to rotate in the inner cavity of the fixed box 11, so that the outside air is drawn into the fixed box 11 through the air intake pipe 12. A connecting groove 13 is provided at the front end of the lower shell 1, and the side walls of the lower shell 1 and the upper shell 2 are provided with air dividing grooves 14 and heat dissipation grooves 15. An air outlet 16 is provided at the top of the upper shell 2. An adding pipe 17 is fixedly installed on the top surface of the lower shell 1. Open the adding pipe 17, pour out the inner cavity of the lower shell 1 and the upper shell 2, and then add new lubricating oil to the inner cavity of the lower shell 1 and the upper shell 2 through the adding pipe 17.

[0032] Among them, a connecting hole 18 is provided at the bottom end of the lower shell 1, a limiting ring 19 is fixedly installed in the inner cavity of the connecting hole 18, a blocking shaft 20 is movably connected to the inner cavity of the connecting hole 18, a pulling plate 21 is fixedly installed at the front end of the blocking shaft 20, a positioning shaft 22 is fixedly installed on the front side of the lower shell 1, a return spring 23 is movably sleeved on the surface of the positioning shaft 22, and a lifting plate 30 is movably connected to the inner cavity of the lower shell 1. When the liquid level of the lubricating oil is lower than the standard liquid level, the air outlet 16 is blocked, and then the pulling plate 21 is pulled forward, so that the pulling plate 21 drives the blocking shaft 20 to move forward, thereby moving the blocking shaft 20 to the front side of the gas distribution groove 14, and then the input device is started, with The moving fan blade 10 rotates. Since the air outlet 16 is closed, the air drawn into the air distribution groove 14 enters the bottom of the lifting plate 30 through the rear end of the connecting hole 18. As the air continues to enter, the lifting plate 30 continues to move upward, thereby raising the liquid level. When the liquid level of the lubricating oil is higher than the standard liquid level, the air outlet 16 is opened, and then the pulling plate 21 is pulled forward so that the blocking shaft 20 is located on the front side of the air distribution groove 14. At this time, the gravity of the lubricating oil and the lifting plate 30 can push the lifting plate 30 downward, so that the air below the lifting plate 30 enters the heat dissipation groove 15 through the connecting hole 18. When the lifting plate 30 descends, the liquid level of the lubricating oil can be lowered.

[0033] Among them, a gear ring 24 is fixedly installed at the front end of the output shaft 4, a redirecting sleeve 25 is movably sleeved on the outer side of the output shaft 4, a steering gear 26 is fixedly installed on the front side of the inner cavity of the redirecting sleeve 25, and a planetary gear 27 is movably connected to the front side of the inner cavity of the redirecting sleeve 25. A bearing 28 is fixedly installed at the front end of the lower shell 1, and a magnetic ring 29 is fixedly installed on the front side of the outer wall of the bearing 28. When connecting an external device to the output shaft 4, the redirecting sleeve 25 can be directly pulled forward to separate the redirecting sleeve 25 from the magnetic ring 29. After separation, the external device can be directly installed on the output shaft 4 for transmission.

[0034] Among them, the output shaft 4 is located on the left side of the input shaft 3, the front end of the output shaft 4 passes through and extends to the front side of the lower shell 1, the rear end of the input shaft 3 passes through and extends to the rear side of the lower shell 1, the reduction gear 6 is engaged with the driving gear 5, and the rear end of the input shaft 3 is connected to the input device. The input device drives the input shaft 3 to rotate. When the input shaft 3 rotates, the output shaft 4 is driven to rotate through the engagement of the driving gear 5 and the reduction gear 6. Since the diameter value of the reduction gear 6 is larger than the diameter value of the driving gear 5, the speed of the output shaft 4 is smaller than the speed of the input shaft 3, thereby achieving speed reduction.

[0035] Among them, the fan blades 10 are movably connected in the inner cavity of the fixed box 11, the fixed box 11 is connected with the air dividing groove 14 through the connecting groove 13, the air dividing groove 14 is connected with the heat dissipation groove 15, and enter the connecting groove 13 after rotating in the fixed box 11, enter the air dividing groove 14 and the heat dissipation groove 15 through the connecting groove 13, and then flow from bottom to top in the heat dissipation groove 15 to the air dividing groove 14 in the upper shell 2, and finally discharged through the air outlet 16. Since the cold air from the outside continuously enters the heat dissipation groove 15, the cold air always flows in the heat dissipation groove 15, and when the cold air flows, the heat can be taken out from the air outlet 16.

[0036] Among them, the top end of the pull plate 21 is movably connected to the surface of the positioning shaft 22, and the front and rear ends of the reset spring 23 are respectively fixedly installed on the rear side of the pull plate 21 and the front side of the lower shell 1. After releasing the pull plate 21, the elasticity of the reset spring 23 drives the pull plate 21 to move backward, thereby driving the blocking shaft 20 to move backward to the bottom of the air dividing groove 14, thereby realizing the reset of the blocking shaft 20 and the closure of the connecting hole 18.

[0037] Among them, the lifting plate 30 is located below the driving gear 5 and the reduction gear 6, the side wall of the lifting plate 30 is in contact with the inner wall of the lower shell 1, and the lifting plate 30 is located above the connecting hole 18, so as to avoid the driving gear 5 and the reduction gear 6 from contacting the lifting plate 30 when rotating, thereby avoiding abnormal noise from the device, and ensuring that the air entering the bottom of the lifting plate 30 from the connecting hole 18 will not enter the lifting plate 30, thereby ensuring the normal lifting and lowering of the lifting plate 30.

[0038] Among them, there are two limit rings 19, which are respectively located on the front and rear sides of the front end of the air dividing groove 14. The blocking shaft 20 is movably connected in the middle of the two limit rings 19. The diameter value of the blocking shaft 20 is equal to the diameter value of the connecting hole 18. The limit ring 19 positions the forward and backward movement of the blocking shaft 20, thereby preventing the blocking shaft 20 from falling off from the connecting hole 18.

[0039] Among them, the steering gear 26 is meshed with the planetary gear 27, and the planetary gear 27 is meshed with the ring gear 24. There are three planetary gears 27, and the three planetary gears 27 are distributed at equal angles around the axis of the output shaft 4. When the output shaft 4 rotates, the ring gear 24 is driven to rotate by the meshing of the ring gear 24 and the planetary gears 27, and the redirecting sleeve 25 is driven to rotate in the opposite direction to the output shaft 4 by the meshing of the planetary gears 27 and the steering gear 26.

[0040] Among them, the inner diameter value of the magnetic ring 29 is equal to the inner diameter value of the redirecting sleeve 25, the outer diameter value of the magnetic ring 29 is equal to the outer diameter value of the redirecting sleeve 25, the magnetic ring 29 is connected to the rear end of the redirecting sleeve 25 by magnetism, the redirecting sleeve 25 is inserted on the outside of the output shaft 4, the magnetic ring 29 and the redirecting sleeve 25 are fitted, and the magnetism between the magnetic ring 29 and the redirecting sleeve 25 is used to position the rear end of the redirecting sleeve 25, and at the same time the planetary gear 27 is meshed with the ring gear 24, and the planetary gear 27 is used to position the front end of the redirecting sleeve 25, thereby achieving the fixation of the redirecting sleeve 25.

[0041] Working principle and usage process:

[0042] When in use, the rear end of the input shaft 3 is connected to the input device, and the input device drives the input shaft 3 to rotate. When the input shaft 3 rotates, the output shaft 4 is driven to rotate through the meshing of the driving gear 5 and the reduction gear 6. Since the diameter of the reduction gear 6 is larger than that of the driving gear 5, the rotation speed of the output shaft 4 is smaller than that of the input shaft 3, thereby achieving speed reduction.

[0043] When connecting the external device to the output shaft 4, the redirecting sleeve 25 can be directly pulled forward to separate the redirecting sleeve 25 from the magnetic ring 29. After separation, the external device can be directly installed on the output shaft 4 for transmission, or the redirecting sleeve 25 can be inserted on the outside of the output shaft 4 to fit the magnetic ring 29 with the redirecting sleeve 25. The magnetism between the magnetic ring 29 and the redirecting sleeve 25 is used to position the rear end of the redirecting sleeve 25. At the same time, the planetary gear 27 is meshed with the ring gear 24, and the front end of the redirecting sleeve 25 is positioned by the planetary gear 27, so as to fix the redirecting sleeve 25. At this time, when the output shaft 4 rotates, the meshing of the ring gear 24 and the planetary gear 27 drives the ring gear 24 to rotate, and the meshing of the planetary gear 27 and the steering gear 26 drives the redirecting sleeve 25 to rotate in the opposite direction to the output shaft 4.

[0044] When the input shaft 3 rotates, the transmission wheel 7 is driven to rotate, and the transmission belt 9 is used to connect the transmission wheel 7 and the transmission shaft 8, thereby driving the transmission shaft 8 to rotate. When the transmission shaft 8 rotates, the fan blades 10 are driven to rotate in the inner cavity of the fixed box 11, so that the outside air is drawn into the fixed box 11 through the air inlet pipe 12, and then enters the connecting groove 13 after rotating in the fixed box 11, enters the air distribution groove 14 and the heat dissipation groove 15 through the connecting groove 13, and then flows from bottom to top in the heat dissipation groove 15 to the air distribution groove 14 in the upper shell 2, and finally discharged through the air outlet 16. Since the cold air from the outside continuously enters the heat dissipation groove 15, the cold air always flows in the heat dissipation groove 15, and when the cold air flows, the heat can be taken out from the air outlet 16;

[0045] When adding lubricating oil, open the adding pipe 17, pour out the inner cavity of the lower shell 1 and the upper shell 2, and then add new lubricating oil to the inner cavity of the lower shell 1 and the upper shell 2 through the adding pipe 17. When the liquid level of the lubricating oil is lower than the standard liquid level, block the air outlet 16, and then pull the pull plate 21 forward to make the pull plate 21 drive the blocking shaft 20 to move forward, so as to move the blocking shaft 20 to the front side of the air distribution groove 14. At this time, start the input device to drive the fan blade 10 to rotate. Since the air outlet 16 is closed, the air drawn into the air distribution groove 14 passes through the connecting The rear end of the hole 18 enters the bottom of the lifting plate 30. As the air continues to enter, the lifting plate 30 continues to move upward, thereby raising the liquid level. When the liquid level of the lubricating oil is higher than the standard liquid level, the air outlet 16 is opened, and then the pull plate 21 is pulled forward to make the blocking shaft 20 located on the front side of the air distribution groove 14. At this time, the gravity of the lubricating oil and the lifting plate 30 can push the lifting plate 30 downward, so that the air below the lifting plate 30 enters the heat dissipation groove 15 through the connecting hole 18. When the lifting plate 30 descends, the liquid level of the lubricating oil can be lowered.

[0046] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0047] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A small gear reducer for mechanical equipment, comprising a lower housing, characterized in that: The upper shell is fixedly installed on the top of the lower shell, and the middle parts of the lower shell and the upper shell are movably connected with an input shaft and an output shaft, and the middle parts of the input shaft and the output shaft are respectively fixedly installed with a driving gear and a reduction gear, a front end of the input shaft is fixedly installed with a transmission wheel, and the inner cavity of the lower shell is movably connected with a transmission shaft, and the surfaces of the transmission wheel and the transmission shaft are transmission-connected with a transmission belt, a fan blade is fixedly installed on the front end of the transmission shaft, a fixing box is fixedly installed on the front side of the lower shell, and an air intake pipe is fixedly installed on the bottom end of the fixing box, a connecting groove is provided at the front end of the lower shell, and the side walls of the lower shell and the upper shell are both provided with air distribution grooves and heat dissipation grooves, an air outlet is provided at the top of the upper shell, and an adding pipe is fixedly installed on the top surface of the upper shell; A communicating hole is provided at the bottom end of the lower shell, a limiting ring is fixedly installed in the inner cavity of the communicating hole, a blocking shaft is movably connected to the inner cavity of the communicating hole, a pulling plate is fixedly installed at the front end of the blocking shaft, a positioning shaft is fixedly installed on the front side of the lower shell, a return spring is movably sleeved on the surface of the positioning shaft, and a lifting plate is movably connected to the inner cavity of the lower shell; A gear ring is fixedly installed at the front end of the output shaft, a redirecting sleeve is movably sleeved on the outer side of the output shaft, a steering gear is fixedly installed on the front side of the inner cavity of the redirecting sleeve, a planetary gear is movably connected to the front side of the inner cavity of the redirecting sleeve, a bearing is fixedly installed at the front end of the lower shell, and a magnetic ring is fixedly installed on the front side of the outer wall of the bearing.

2. A small gear reducer for mechanical equipment according to claim 1, characterized in that: The output shaft is located on the left side of the input shaft, the front end of the output shaft penetrates and extends to the front side of the lower housing, the rear end of the input shaft penetrates and extends to the rear side of the lower housing, and the reduction gear is meshed with the driving gear.

3. The small gear reducer for mechanical equipment according to claim 1, characterized in that: The fan blades are movably connected in the inner cavity of the fixing box, the fixing box is connected to the air distribution groove through the connecting groove, and the air distribution groove is connected to the heat dissipation groove.

4. The small gear reducer for mechanical equipment according to claim 1, characterized in that: The top end of the pull plate is movably connected to the surface of the positioning shaft, and the front and rear ends of the return spring are respectively fixedly mounted on the rear side surface of the pull plate and the front side surface of the lower shell body.

5. The small gear reducer for mechanical equipment according to claim 1, characterized in that: The lifting plate is located below the driving gear and the reduction gear, the side wall of the lifting plate is in contact with the inner wall of the lower shell, and the lifting plate is located above the connecting hole.

6. The small gear reducer for mechanical equipment according to claim 1, characterized in that: There are two limiting rings, which are respectively located at the front and rear sides of the front end of the gas dividing groove. The blocking shaft is movably connected to the middle of the two limiting rings, and the diameter of the blocking shaft is equal to the diameter of the connecting hole.

7. The small gear reducer for mechanical equipment according to claim 1, characterized in that: The steering gear is meshed with the planetary gear, and the planetary gear is meshed with the ring gear. There are three planetary gears in total, and the three planetary gears are distributed at equal angles around the axis of the output shaft.

8. The small gear reducer for mechanical equipment according to claim 1, characterized in that: The inner diameter of the magnetic ring is equal to the inner diameter of the redirecting sleeve, the outer diameter of the magnetic ring is equal to the outer diameter of the redirecting sleeve, and the rear end of the magnetic ring and the redirecting sleeve is connected magnetically.

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