Oil-cooled gear motor

Abstract

The invention provides an oil cooling type speed reducing motor which comprises a motor body and a speed reducer, the speed reducer comprises a machine shell and a planetary gear assembly, a cavity is formed in the machine shell, the planetary gear assembly is arranged in the cavity, a liquid outlet is formed in the bottom of the machine shell, a liquid inlet is formed in the top of the machine shell, and the planetary gear assembly comprises a sun gear, a planetary gear and an outer gear ring. The speed reducer further comprises a first wheel locking assembly and a second wheel locking assembly, the first wheel locking assembly is used for locking the planet wheel and enabling the sun wheel to drive the outer gear ring to rotate, and the second wheel locking assembly is used for locking the outer gear ring and enabling the planet wheel to rotate around the sun wheel, so that each wheel tooth part of the sun wheel, the planet wheel and the outer gear ring can make contact with cooling oil in the rotating process. Therefore, oil sludge adhering to the surfaces of the gear teeth is reduced, and the service life is relatively prolonged.

Description

Technical Field

[0001] The present invention relates to a motor, and in particular to an oil-cooled reduction motor. Background Art

[0002] At present, the Chinese patent with announcement number CN201810802502.4 discloses a reduction motor, including: a casing, the casing is constructed with a first mounting cavity and a second mounting cavity, and is provided with a mounting hole connecting the first mounting cavity and the second mounting cavity; a motor shaft is sleeved in the mounting hole, and at least one end extends out of the casing, and the motor shaft and the casing can rotate relative to each other; a motor assembly is provided in the first mounting cavity, the motor assembly includes a stator winding assembly fixed on the motor shaft, and a rotor assembly sleeved outside the stator winding assembly; a gear reduction mechanism is provided in the second mounting cavity, the input end of the gear reduction mechanism passes through the mounting hole and is connected to the rotor assembly, and the output end of the gear reduction mechanism is connected to the casing.

[0003] The above patent still has shortcomings. Although the above-mentioned reduction motor is provided with cooling oil in the first installation cavity, the gear reduction mechanism will experience certain wear during operation. The metal powder mixed with the cooling oil will form sludge, which will cause the wear of the gear reducer to increase. Therefore, after the cooling oil has been used for a period of time, the cooling oil in the first installation cavity needs to be replaced. The gear reduction mechanism is usually a planetary gear assembly, and its outer ring gear is fixed in the first installation cavity. The cooling oil can only contact the outer ring gear through the planetary gear. Therefore, the sludge adhering to the outer teeth is difficult to clean, which can easily lead to serious wear problems. Summary of the Invention

[0004] In view of this, an object of the present invention is to provide an oil-cooled reduction motor, which improves the sludge cleaning effect.

[0005] In order to solve the above technical problems, the technical solution of the present invention is: an oil-cooled reduction motor, comprising a motor body and a reducer, the reducer comprising a casing and a planetary gear assembly, a cavity being opened in the casing, the planetary gear assembly being arranged in the cavity, a liquid outlet being opened at the bottom of the casing, and a liquid inlet being provided at the top of the casing, the planetary gear assembly comprising a sun gear, planetary gears and an outer ring gear, the reducer further comprising a lock wheel assembly 1 and a lock wheel assembly 2, the lock wheel assembly 1 being used to lock the planetary gear and make the sun gear drive the outer ring gear to rotate, the lock wheel assembly 2 being used to lock the outer ring gear and make the planetary gear rotate around the sun gear.

[0006] Preferably, a drive shell is provided on the outside of the casing, and the drive shell rotates around the axial direction of the output shaft of the reducer. When the drive shell rotates, the lock wheel assembly 1 and the lock wheel assembly 2 are driven to lock.

[0007] Preferably, a planetary carrier is provided on one side of the planetary gear and an oil-slinging rack is provided on the other side. An oil-slinging plate is provided on the oil-slinging rack. The lock wheel assembly includes a lock rod and a return spring. A travel slide groove is provided on the inner side of the drive housing relative to the lock rod. When the drive housing rotates, the travel slide groove drives the lock rod to move in a straight line. The return spring is used to drive the lock rod to reset. A side end baffle cooperating with the lock rod is also provided on the oil-slinging rack. When the lock rod moves into the cavity, the side end baffle and the lock rod are locked and the planetary carrier is fixed.

[0008] Preferably, the second locking wheel assembly includes a second locking rod and a second reset spring. The second locking rod is arranged between the housing and the outer ring gear. The second reset spring is used to drive the second locking rod to reset. A limiting hole cooperating with the second locking rod is provided on the drive housing. When the first locking wheel assembly locks the planetary gear, the second locking rod disengages from the outer ring gear and allows the outer ring gear to rotate.

[0009] Preferably, the reducer further includes a lock wheel assembly three, and the reducer includes a pair of planetary gear assemblies, and the lock wheel assembly one and the lock wheel assembly three are respectively adapted to the planetary gears in the two planetary gear assemblies.

[0010] Preferably, the lock wheel assembly three includes a lock rod three and a return spring three, and a travel slide groove three is also provided on the drive housing. The lock rod three is adapted to the travel slide groove three, and an end face baffle is provided on the side end of the planetary wheel adapted to the lock rod three.

[0011] Preferably, mounting ring 1 and mounting ring 2 are further provided in the casing, mounting ring 1 is fixed to the end of the casing by screws and fixed to the motor body, mounting ring 2 is arranged between the two outer gear rings, mounting ring 1, mounting ring 2 and the cavity are all provided with inclined surfaces, and the liquid outlet is arranged at the bottom of the inclined surface.

[0012] Compared with the prior art, the present invention has the following beneficial effects: 1. By setting the liquid inlet and outlet, it is convenient to replace the cooling oil in the cavity and clean the sludge. By setting the lock wheel assembly 1 and lock wheel assembly 2, each gear part of the sun gear, planetary gear and outer ring gear can contact the cooling oil during the rotation process, thereby reducing the sludge sticking to the gear tooth surface and relatively increasing the service life; 2. By placing the drive housing on the outside of the casing and cooperating with the lock rod 1 and the side end baffle, when the drive housing is rotated, the lock rod 1 is driven to press against the oil flinger, and at the same time, the connection between the outer ring gear and the lock rod 2 is cut off, so that the sun gear drives the outer ring gear to rotate, so that each gear tooth of the outer ring gear can be immersed in the cooling oil, reducing the oil sludge on the gear teeth. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a structural diagram of an embodiment; Figure 2 is a schematic cross-sectional view of an embodiment; Figure 3 A partial cross-sectional view of an embodiment; Figure 4 Schematic diagram of the drive housing.

[0014] Figure markings: 1. Motor body; 2. Reducer; 3. Casing; 4. Planetary gear assembly; 5. Cavity; 6. Liquid outlet; 7. Liquid inlet; 8. Sun gear; 9. Planetary gear; 10. Outer ring gear; 11. Planetary carrier; 12. Lock wheel assembly one; 13. Lock wheel assembly two; 14. Lock wheel assembly three; 15. Drive housing; 16. Handle; 17. Block; 18. Oil-slinging rack; 19. Oil-slinging plate; 20. Lock rod one; 21. Return spring one; 22. Travel slide one; 23. Side end baffle; 24. Lock rod two; 25. Return spring two; 26. Limiting hole; 27. Lock rod three; 28. Return spring three; 29. ​​Travel slide three; 30. End baffle; 31. Mounting ring one; 32. Mounting ring two; 33. Inclined surface. DETAILED DESCRIPTION

[0015] The specific embodiments of the present invention are further described below in conjunction with the accompanying drawings to make the technical solutions of the present invention easier to understand and grasp.

[0016] An oil-cooled reduction motor includes a motor body 1 and a reducer 2. The output shaft of the motor body 1 is fixedly connected to the input end of the reducer 2. The reducer 2 includes a housing 3 and a pair of planetary gear assemblies 4. A cavity 5 is provided in the housing 3. Both planetary gear assemblies 4 are arranged in the cavity 5. A liquid outlet 6 is provided at the bottom of the housing 3 and a liquid inlet 7 is provided at the top of the housing 3. The planetary gear assembly 4 includes a sun gear 8, three planetary gears 9 and an outer ring gear 10. A planet carrier 11 is provided between the three planetary gears 9. The planet carrier 11 is the planetary gear assembly 4. At the output end, the reducer 2 also includes a lock wheel assembly 12, a lock wheel assembly 2 13 and a lock wheel assembly 3 14. The lock wheel assembly 12 and the lock wheel assembly 3 14 are used to lock two different sets of planetary gears 9 and enable the sun gear 8 to drive the two outer ring gears 10 to rotate. The lock wheel assembly 2 13 is used to lock the outer ring gear 10 and ensure that the planetary gears 9 rotate around the sun gear 8. When the reducer 2 is required to work, the lock wheel assembly 2 13 is required to lock the outer gear. Therefore, the lock wheel assembly 12 and the lock wheel assembly 3 14 are in the normally closed mode, and the lock wheel assembly 2 13 is in the normally open mode.

[0017] A drive shell 15 is provided on the outside of the casing 3, and a handle 16 is provided on the outside of the drive shell 15. A block 17 for limiting the rotation angle of the drive shell 15 is also provided on the casing 3. The drive shell 15 is rotationally matched with the casing 3 at the output shaft of the reducer 2 and rotates around the axial direction of the output shaft of the reducer 2. When the drive shell 15 rotates, it drives the lock wheel assembly 12, the lock wheel assembly 2 13 and the lock wheel assembly 3 14 to lock or unlock.

[0018] A planetary carrier 11 is provided on one side of the planetary gear 9 near the output end of the reducer 2, and an oil-slinging rack 18 is provided on the other side. An oil-slinging plate 19 is provided on the oil-slinging rack 18, and a lock wheel assembly 12 includes a locking rod 20 and a return spring 21. A travel slide 22 is provided on the inner side of the drive housing 15 relative to the position of the locking rod 20. When the drive housing 15 rotates, the travel slide 22 drives the locking rod 20 to move linearly, and the return spring 21 is used to drive the locking rod 20 to reset. A side end baffle 23 cooperating with the locking rod 20 is also provided on the oil-slinging rack 18. When the locking rod 20 moves into the cavity 5, the side end baffle 23 and the locking rod 20 are stuck and the planetary carrier 11 is fixed.

[0019] The locking wheel assembly 13 includes a locking rod 24 and a reset spring 25. The locking rod 24 is arranged between the housing 3 and the outer ring gear 10. The reset spring 25 is used to drive the locking rod 24 to reset. A limiting hole 26 that cooperates with the locking rod 24 is provided on the drive housing 15. When the locking wheel assembly 12 locks the planetary gear 9, the locking rod 24 disengages from the outer ring gear 10 and allows the outer ring gear 10 to rotate.

[0020] The lock wheel assembly three 14 includes a lock rod three 27 and a return spring three 28. A travel slide groove three 29 is also provided on the drive housing 15. The lock rod three 27 is adapted to the travel slide groove three 29. The side end of the planetary gear 9 adapted to the lock rod three 27 is provided with an end face baffle 30. Because the outer ring gear 10 in the two planetary gear assemblies 4 needs to rotate in sequence, the opening direction of the travel slide groove three 29 is opposite to that of the travel slide groove one 22.

[0021] When the oil chamber needs to be cleaned, the drive housing 15 is rotated forward by the handle 16. At this time, the locking rod 1 20 is stuck in the movement trajectory of the side end baffle 23, and the locking rod 2 24 is separated from the outer ring gear 10. When the side end baffle 23 presses against the locking rod 1 20, the planetary gear 9 near the input end of the reducer 2 stops rotating, and the outer ring gear 10 matched with it rotates. After running the motor for a while, the drive housing 15 is reversed to the bottom. At this time, the locking rod 3 27 is stuck in the end face baffle 30, and the planetary gear 9 near the output end of the reducer 2 stops rotating, and the outer ring gear 10 matched with it rotates, and the cleaning of the two outer ring gears 10 is completed.

[0022] The casing 3 is also provided with a mounting ring 1 31 and a mounting ring 2 32. The mounting ring 1 31 is fixed to the end of the casing 3 by screws and is fixed to the motor body 1. The mounting ring 2 32 is arranged between the two outer gear rings 10. The mounting ring 1 31, the mounting ring 2 32 and the cavity 5 are all provided with an inclined surface 33. The liquid outlet 6 is arranged at the bottom of the inclined surface 33. By providing the inclined surface 33, the cooling oil can bring out more sludge when flowing out, thereby reducing the residual sludge.

[0023] Of course, the above are only typical examples of the present invention. In addition, the present invention may also have many other specific implementation methods. Any technical solutions formed by equivalent replacement or equivalent transformation fall within the scope of protection required by the present invention.

Claims

1. An oil-cooled reduction motor, comprising a motor body (1) and a reduction gear (2), wherein the reduction gear (2) comprises a housing (3) and a planetary gear assembly (4), wherein a cavity (5) is defined in the housing (3), and the planetary gear assembly (4) is disposed in the cavity (5), and wherein: The bottom of the housing (3) is provided with a liquid outlet (6), and the top of the housing (3) is provided with a liquid inlet (7). The planetary gear assembly (4) includes a sun gear (8), planetary gears (9) and an outer ring gear (10). The reducer (2) also includes a lock wheel assembly (12) and a lock wheel assembly (13). The lock wheel assembly (12) is used to lock the planetary gear (9) and enable the sun gear (8) to drive the outer ring gear (10) to rotate. The lock wheel assembly (13) is used to lock the outer ring gear (10) and enable the planetary gear (9) to rotate around the sun gear (8).

2. The oil-cooled reduction motor according to claim 1, wherein: A drive housing (15) is provided on the outside of the housing (3), and the drive housing (15) rotates around the axial direction of the output shaft of the reducer (2). When the drive housing (15) rotates, the lock wheel assembly 1 (12) and the lock wheel assembly 2 (13) are driven to lock.

3. The oil-cooled reduction motor according to claim 2, characterized in that: The planetary gear (9) is provided with a planetary carrier (11) on one side and an oil-slinging rack (18) on the other side. The oil-slinging rack (18) is provided with an oil-slinging plate (19). The locking wheel assembly (12) includes a locking rod (20) and a return spring (21). A travel slide groove (22) is provided on the inner side of the driving housing (15) relative to the position of the locking rod (20). When the driving housing (15) rotates, the travel slide groove (22) drives the locking rod (20) to move linearly. The return spring (21) is used to drive the locking rod (20) to reset. A side end baffle (23) cooperating with the locking rod (20) is also provided on the oil-slinging rack (18). When the locking rod (20) moves into the cavity (5), the side end baffle (23) is locked with the locking rod (20) and fixes the planetary carrier (11).

4. The oil-cooled reduction motor according to claim 2, wherein: The second locking wheel assembly (13) includes a second locking rod (24) and a second reset spring (25). The second locking rod (24) is arranged between the housing (3) and the outer ring gear (10). The second reset spring (25) is used to drive the second locking rod (24) to reset. The drive housing (15) is provided with a limiting hole (26) that cooperates with the second locking rod (24). When the first locking wheel assembly (12) locks the planetary gear (9), the second locking rod (24) is disengaged from the outer ring gear (10) and allows the outer ring gear (10) to rotate.

5. The oil-cooled reduction motor according to claim 2, wherein: The reducer (2) further includes a lock wheel assembly three (14), and the reducer (2) includes a pair of planetary gear assemblies (4). The lock wheel assembly one (12) and the lock wheel assembly three (14) are respectively adapted to the planetary gears (9) in the two planetary gear assemblies (4).

6. The oil-cooled reduction motor according to claim 5, characterized in that: The locking wheel assembly three (14) includes a locking rod three (27) and a return spring three (28), and the driving housing (15) is also provided with a travel slide groove three (29), the locking rod three (27) is adapted to the travel slide groove three (29), and the side end of the planetary wheel (9) adapted to the locking rod three (27) is provided with an end face baffle (30).

7. The oil-cooled reduction motor according to claim 5, characterized in that: A first mounting ring (31) and a second mounting ring (32) are further provided in the housing (3); the first mounting ring (31) is fixed to the end of the housing (3) by screws and is fixed to the motor body (1); the second mounting ring (32) is provided between the two outer gear rings (10); the first mounting ring (31), the second mounting ring (32) and the cavity (5) are all provided with an inclined surface (33); and the liquid outlet (6) is provided at the bottom of the inclined surface (33).

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