Gear motor

Abstract

The utility model relates to the technical field of motors, and particularly discloses a speed reduction motor, which comprises a speed reducer shell, a motor shell, a fan cover shell and a fan, a speed reducer air duct is formed in the speed reducer shell, a motor air duct is formed in the motor shell, the fan cover shell is positioned between the speed reducer shell and the motor shell, and the fan cover shell is positioned between the speed reducer shell and the motor shell. The fan cover shell is provided with an exhaust outlet and two air inlets which are communicated with each other, the two air inlets are communicated with the speed reducer air duct and the motor air duct respectively, and the fan is located in the fan cover shell so that airflow can flow from the air inlets to the exhaust outlet. The fan in the fan cover shell enables airflow to flow towards the exhaust outlet, so that the speed reducer air duct and the motor air duct simultaneously extract external air to cool the speed reducer assembly and the motor assembly, and a good heat dissipation effect on the speed reducer assembly and the motor assembly is guaranteed; the speed reducer assembly and the motor assembly provide reliable support for the two sides of the fan respectively so as to reduce vibration and noise in the operation process of the fan.

Description

Technical Field

[0001] The utility model relates to the technical field of motors, in particular to a reduction motor. Background Art

[0002] At present, the integration of a speed reducer and a motor is a common combination method. The common cooling methods are air cooling or liquid cooling. Although liquid cooling has a good cooling effect, in some working conditions, it is limited by the lack of water sources, oil circuits, etc., so the application scenarios are limited. The currently common air cooling method is coaxial air cooling with a fan installed on the motor shaft and located at the tail end of the motor, and forced air cooling with a blower installed at the tail end of the motor. However, whether it is coaxial air cooling or forced air cooling, they are both arranged at the tail end of the motor. The air flow first passes through the motor and then through the speed reducer, reducing the heat dissipation effect on the speed reducer. In addition, for the coaxial air cooling method, the fan is located at the tail end of the motor shaft, forming a cantilever structure, which will generate large vibrations during operation and increase the noise of the reduction motor. Content of the Utility Model

[0003] The purpose of the utility model is to provide a reduction motor to ensure good heat dissipation effects for both the motor and the speed reducer while reducing vibration and noise during operation.

[0004] The utility model provides a reduction motor, which includes a motor assembly and a speed reducer assembly. The motor shaft of the motor assembly is connected to the speed reducer shaft of the speed reducer assembly and drives the speed reducer shaft to rotate. It also includes a speed reducer housing, a motor housing, a wind hood housing and a fan. The speed reducer assembly is installed in the speed reducer housing, and the speed reducer housing forms a speed reducer air duct. The motor assembly is installed in the motor housing, and the motor housing forms a motor air duct. The wind hood housing is located between the speed reducer housing and the motor housing, and both ends of the wind hood housing are fixedly connected to the speed reducer housing and the motor housing respectively. The wind hood housing is provided with a connected exhaust port and two air inlets, and the two air inlets are respectively communicated with the speed reducer air duct and the motor air duct. The fan is located in the wind hood housing and is driven by the motor shaft or the speed reducer shaft, and a negative pressure is formed at the center of the fan, so that the air flows in the speed reducer air duct and the motor air duct respectively enter the interior of the wind hood housing from the two air inlets and are discharged from the exhaust port.

[0005] As a preferred technical solution of the reduction motor, the speed reducer housing is provided with a speed reducer inner shell, a speed reducer outer shell and a first reinforcing rib. The speed reducer inner shell and the speed reducer outer shell jointly form the speed reducer air duct. The first reinforcing rib is located in the speed reducer air duct, and both ends of the first reinforcing rib are fixedly connected to the speed reducer inner shell and the speed reducer outer shell respectively.

[0006] As a preferred technical solution of the reduction motor, a plurality of first reinforcing ribs are provided, and the plurality of first reinforcing ribs are arranged at intervals along the circumferential direction of the speed reducer inner shell and divide the speed reducer air duct into several speed reducer sub-air ducts.

[0007] As a preferred technical solution of the reduction motor, a plurality of first heat dissipation ribs are arranged in the reduction gearbox sub-air duct, and the plurality of first heat dissipation ribs are fixedly arranged on the inner shell of the reduction gearbox and are spaced along the circumferential direction of the inner shell of the reduction gearbox.

[0008] As a preferred technical solution of the reduction motor, the motor housing is provided with an inner motor housing, an outer motor housing and a third reinforcing rib. The inner motor housing and the outer motor housing jointly form a motor air duct. The third reinforcing rib is located in the motor air duct, and both ends of the third reinforcing rib are fixedly connected to the inner motor housing and the outer motor housing respectively.

[0009] As a preferred technical solution of the reduction motor, a plurality of third reinforcing ribs are provided. The plurality of third reinforcing ribs are spaced along the circumferential direction of the inner motor housing and divide the motor air duct into several motor sub-air ducts.

[0010] As a preferred technical solution of the reduction motor, a plurality of second heat dissipation ribs are arranged in the motor sub-air duct, and the plurality of second heat dissipation ribs are fixedly arranged on the inner motor housing and are spaced along the circumferential direction of the inner motor housing.

[0011] As a preferred technical solution of the reduction motor, it further includes two wind baffle plates. The two wind baffle plates are respectively arranged at both ends of the wind hood housing. Two air inlets are respectively arranged on the two wind baffle plates. A volute wall is arranged inside the wind hood housing. The volute wall and the two wind baffle plates jointly form a vortex air duct. The air inlets and the air outlet are both communicated with the vortex air duct.

[0012] As a preferred technical solution of the reduction motor, an air inlet is opened at the center of the wind baffle plate. The air inlet can allow the motor shaft or the reduction gearbox shaft to pass through. A flange is protrudingly arranged at the edge of the wind baffle plate. Matching walls are arranged on both sides of the volute wall. The flange is in clearance fit with the matching walls.

[0013] As a preferred technical solution of the reduction motor, a protective net is arranged at the air outlet.

[0014] The beneficial effects of the present utility model are as follows:

[0015] The utility model provides a speed reduction motor. By respectively arranging a speed reduction motor air duct and a motor air duct on a speed reduction machine housing and a motor housing, and connecting them with a wind cover housing, negative pressure is generated at the center of a fan in the wind cover housing. The air flows in the speed reduction motor air duct and the motor air duct respectively enter the interior of the wind cover housing through two air inlets, and the air flow process is smoother. Thus, the speed reduction motor air duct and the motor air duct simultaneously extract external air to cool the speed reduction machine assembly and the motor assembly, ensuring good heat dissipation effects for the speed reduction machine assembly and the motor assembly, and also improving the cooling efficiency. And the air flow is discharged through an air outlet. There is only one exhaust path for the exhaust air flow, avoiding the situation of mutual interference among multiple exhaust air flows. In addition, the fan is located between the motor assembly and the speed reduction machine assembly, and the speed reduction machine assembly and the motor assembly respectively provide reliable supports on both sides of the fan to reduce the vibration and noise during the operation of the fan. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 FIG. 1 is one of the schematic structural diagrams of the speed reduction motor in an embodiment of the utility model;

[0017] Figure 2 FIG. 2 is another schematic structural diagram of the speed reduction motor in an embodiment of the utility model;

[0018] Figure 3 FIG. Figure 2 is a partial enlarged view of part A in FIG.

[0019] Figure 4 FIG. 3 is a sectional view of the speed reduction motor in an embodiment of the utility model;

[0020] Figure 5 FIG. Figure 4 is a partial enlarged view of part B in FIG.

[0021] Figure 6 FIG. 4 is a schematic structural diagram of the motor shaft in an embodiment of the utility model;

[0022] Figure 7 FIG. 5 is a schematic structural diagram of the fan in an embodiment of the utility model;

[0023] Figure 8 FIG. 6 is a front view of the fan in an embodiment of the utility model;

[0024] Figure 9 FIG. Figure 8 is a sectional view of FIG.

[0025] Figure 10 FIG. 7 is a schematic structural diagram of the wind deflector in an embodiment of the utility model;

[0026] Figure 11 FIG. 8 is a front view of the wind deflector in an embodiment of the utility model;

[0027] Figure 12is Figure 11 a sectional view of;

[0028] Figure 13 is a schematic structural view of the speed reducer housing in the embodiment of the present utility model;

[0029] Figure 14 is a front view of the speed reducer housing in the embodiment of the present utility model;

[0030] Figure 15 is Figure 14 a sectional view of;

[0031] Figure 16 is a schematic structural view of the motor housing in the embodiment of the present utility model;

[0032] Figure 17 is a front view of the motor housing in the embodiment of the present utility model;

[0033] Figure 18 is Figure 17 a sectional view of;

[0034] Figure 19 is a schematic structural view of the wind shield housing in the embodiment of the present utility model;

[0035] Figure 20 is a front view of the wind shield housing in the embodiment of the present utility model;

[0036] Figure 21 is Figure 20 a sectional view of;

[0037] Figure 22 is a schematic diagram of the gas flow path inside the wind shield housing in the embodiment of the present utility model.

[0038] In the figure:

[0039] 1. Motor shaft; 11. First keyway; 12. Circlip groove; 13. Spline; 14. Flat key; 15. Circlip;

[0040] 2. Planetary gear set; 21. Output shaft;

[0041] 31. Motor front flange; 32. Motor rear flange;

[0042] 41. Speed reducer front flange; 42. Speed reducer rear flange;

[0043] 5. Wind deflector; 51. Mounting foot; 52. Flange; 53. Air inlet;

[0044] 6. Fan; 61. Second keyway; 62. Fan blade; 63. Partition;

[0045] 7. Reducer housing; 71. Inner reducer housing; 72. Outer reducer housing; 73. Outer stop of the reducer; 74. Air duct of the reducer; 75. First reinforcing rib; 751. First threaded hole; 76. Second reinforcing rib; 761. Hoisting hole of the reducer; 762. Oil hole of the reducer; 77. First protrusion; 771. First through hole; 78. First heat dissipation rib;

[0046] 8. Motor housing; 81. Inner motor housing; 82. Outer motor housing; 83. Outer stop of the motor; 84. Air duct of the motor; 85. Third reinforcing rib; 851. Second threaded hole; 86. Fourth reinforcing rib; 861. Hoisting hole of the motor; 87. Second protrusion; 871. Second through hole; 88. Second heat dissipation rib;

[0047] 9. Wind cover housing; 91. Volute wall; 92. Fitting wall; 93. Inner stop of the reducer; 94. Inner stop of the motor; 95. Third protrusion; 951. Third threaded hole; 96. Air outlet; 97. Protective net. Detailed implementation manners

[0048] Next, the technical solutions of the present utility model will be clearly and completely described in conjunction with the accompanying drawings. Obviously, the described embodiments are part of the embodiments of the present utility model, rather than all of the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present utility model.

[0049] In the description of the present utility model, it should be noted that the orientation or positional relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer", etc. is based on the orientation or positional relationship shown in the accompanying drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation to the present utility model. In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance. Among them, the terms "first position" and "second position" are two different positions, and moreover, the first feature being "above", "above" and "on" the second feature includes the first feature being directly above and obliquely above the second feature, or simply indicating that the first feature has a higher horizontal height than the second feature. The first feature being "below", "below" and "under" the second feature includes the first feature being directly below and obliquely below the second feature, or simply indicating that the first feature has a lower horizontal height than the second feature.

[0050] In the description of the present utility model, it should be noted that, unless otherwise clearly specified and defined, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be a direct connection or an indirect connection through an intermediate medium, and it may be the communication inside two components. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.

[0051] The embodiments of the present utility model will be described in detail below. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals indicate the same or similar elements or elements with the same or similar functions throughout. The embodiments described below by referring to the drawings are exemplary and are only used to explain the present utility model and should not be construed as a limitation to the present utility model.

[0052] Such as Figures 1 - 22As shown in the figure, the present utility model provides a speed reduction motor, which includes a motor assembly and a speed reducer assembly. The motor shaft 1 of the motor assembly is connected to the speed reducer shaft of the speed reducer assembly and drives the speed reducer shaft to rotate. In this embodiment, the speed reducer assembly adopts a planetary gear set 2 and a speed reducer shaft to achieve speed reduction. The motor shaft 1 and the speed reducer shaft are coaxially arranged, the speed reducer shaft is fixedly connected to the sun gear of the planetary gear set 2, and the planet carrier or the ring gear of the planetary gear set 2 serves as the output shaft 21 of the speed reducer assembly. In other embodiments, the speed reducer shaft and the sun gear can also be integrated into the form of a gear shaft, or the motor shaft 1 can be directly used to drive the sun gear to rotate to improve the structural compactness. The speed reduction motor further includes a speed reducer housing 7, a motor housing 8, a wind cover housing 9 and a fan 6. The speed reducer assembly is installed in the speed reducer housing 7, and the speed reducer housing 7 is formed with a speed reducer air duct 74. The motor assembly is installed in the motor housing 8, and the motor housing 8 is formed with a motor air duct 84. The wind cover housing 9 is located between the speed reducer housing 7 and the motor housing 8, and both ends of the wind cover housing 9 are fixedly connected to the speed reducer housing 7 and the motor housing 8 respectively. The wind cover housing 9 is provided with a communicating exhaust port 96 and two air inlets 53, and the two air inlets 53 are respectively communicated with the speed reducer air duct 74 and the motor air duct 84. The fan 6 is located in the wind cover housing 9 and is driven by the motor shaft 1 or the speed reducer shaft to make the air flow from the air inlets 53 towards the exhaust port 96. By respectively arranging the speed reducer air duct 74 and the motor air duct 84 on the speed reducer housing 7 and the motor housing 8 and connecting them to the wind cover housing 9, and making the air flow towards the exhaust port 96 through the fan 6 in the wind cover housing 9. Specifically, during the rotation of the fan 6, a negative pressure area is formed at its central position, and the two air inlets 53 are preferably arranged corresponding to the central position of the fan 6, so that the air flows in the speed reducer air duct 74 and the motor air duct 84 respectively enter the interior of the wind cover housing 8 through the two air inlets 53, and the air flow process is smoother. Thus, the speed reducer air duct 74 and the motor air duct 84 simultaneously draw external air to cool the speed reducer assembly and the motor assembly, ensuring good heat dissipation effects on the speed reducer assembly and the motor assembly, and also improving the cooling efficiency. And the air flow is discharged through one exhaust port 96, and there is only one exhaust path for the exhaust air flow, avoiding the situation of mutual interference between multiple exhaust air flows, thus further ensuring the cooling efficiency. In addition, the fan 6 is located between the motor assembly and the speed reducer assembly, and the speed reducer assembly and the motor assembly respectively provide reliable supports on both sides of the fan 6 to reduce the vibration and noise during the operation of the fan 6.

[0053] Specifically, as Figures 4 - 9As shown, the fan 6 is arranged between the motor assembly and the speed reducer assembly, and the fan 6, the speed reducer shaft and the motor shaft 1 are coaxially arranged. The fan 6 can be arranged on the speed reducer shaft or the motor shaft 1. In this embodiment, the fan 6 is arranged on the motor shaft 1. A first keyway 11 is provided on the shaft section of the motor shaft 1 where the fan 6 is installed, and a second keyway 61 is correspondingly provided on the fan 6. The two are connected by a flat key 14. And two snap ring grooves 1212 are provided on the motor shaft 1, and the two snap ring grooves 1212 are respectively located on both sides of the installation position of the fan 6. A snap ring 15 is clamped in the snap ring groove 1212 to axially fix the fan 6. A spline 13 is provided at the position where the motor shaft 1 is connected to the speed reducer shaft, and the motor shaft 1 and the speed reducer shaft are connected by the spline 13.

[0054] Further, as Figures 13 - 15 , and in combination with Figure 2 As shown, the speed reducer housing 7 is provided with a speed reducer inner housing 71, a speed reducer outer housing 72 and a first reinforcing rib 75. The speed reducer inner housing 71 and the speed reducer outer housing 72 are coaxially arranged, and the speed reducer inner housing 71 and the speed reducer outer housing 72 together form a speed reducer air duct 74 with an annular structure. The first reinforcing rib 75 extends along the radial extension direction of the speed reducer inner housing 71, and both ends of the first reinforcing rib 75 are fixedly connected to the speed reducer inner housing 71 and the speed reducer outer housing 72 respectively. The connection method is preferably integrally formed connection. For example, the speed reducer inner housing 71, the speed reducer outer housing 72 and the first reinforcing rib 75 can be integrally formed by casting. By providing the first reinforcing rib 75, the structural strength of the speed reducer inner housing 71 and the speed reducer outer housing 72 is ensured. The first reinforcing rib 75 is provided in plurality, and the plurality of first reinforcing ribs 75 are arranged at intervals along the circumferential direction of the speed reducer inner housing 71 and divide the speed reducer air duct 74 into several speed reducer sub-air ducts. In this embodiment, by providing a plurality of first reinforcing ribs 75, the structural strength of the speed reducer inner housing 71 and the speed reducer outer housing 72 can be further enhanced.

[0055] Optionally, as Figures 13 - 14 As shown, a plurality of first heat dissipation ribs 78 are arranged in the speed reducer sub-air duct. The plurality of first heat dissipation ribs 78 are fixedly arranged on the speed reducer inner housing 71 and extend towards the direction of the speed reducer outer housing 72. The first heat dissipation ribs 78 are arranged in a triangular shape, so as to increase the heat dissipation area in the speed reducer air duct 74 to obtain a better cooling effect.

[0056] Even further, as Figures 16 - 18 As shown, and in combination with Figure 2As shown, the motor housing 8 is provided with a motor inner housing 81, a motor outer housing 82, and a third reinforcing rib 85. The motor inner housing 81 and the motor outer housing 82 are coaxially arranged, and the motor inner housing 81 and the motor outer housing 82 together form a motor air duct 84 with an annular structure. The third reinforcing rib 85 extends along the radial extension direction of the motor inner housing 81, and both ends of the third reinforcing rib 85 are fixedly connected to the motor inner housing 81 and the motor outer housing 82 respectively. The connection method is preferably an integrally formed connection. For example, the motor inner housing 81, the motor outer housing 82, and the third reinforcing rib 85 can be integrally formed by casting. By providing the third reinforcing rib 85, the structural strength of the motor inner housing 81 and the motor outer housing 82 is ensured. The third reinforcing rib 85 is provided in multiple numbers, and the multiple third reinforcing ribs 85 are arranged at intervals along the circumferential direction of the motor inner housing 81, and the motor air duct 84 is divided into several motor sub-air ducts. In this embodiment, setting multiple third reinforcing ribs 85 can further strengthen the structural strength of the motor inner housing 81 and the motor outer housing 82.

[0057] Optionally, as Figures 16 - 17 shown, a plurality of second heat dissipation ribs 88 are arranged in the motor sub-air duct. The plurality of second heat dissipation ribs 88 are fixedly arranged on the motor inner housing 81 and extend towards the direction of the motor outer housing 82. The second heat dissipation ribs 88 are arranged in a triangular shape, thereby increasing the heat dissipation area in the motor air duct 84 to obtain a better cooling effect.

[0058] Specifically, as Figures 13 - 21 , and in combination with Figure 4 shown, a reducer outer stop 73 is provided at the position where the reducer housing 7 is connected to the wind hood housing 9, and a reducer inner stop 93 is provided at the position where the wind hood housing 9 is connected to the reducer housing 7. The sealing between the reducer housing 7 and the wind hood housing 9 is achieved through the reducer outer stop 73 on the reducer housing 7 and the reducer inner stop 93 on the wind hood housing 9. A motor outer stop 83 is provided at the position where the motor housing 8 is connected to the wind hood housing 9, and a motor inner stop 94 is provided at the position where the wind hood housing 9 is connected to the motor housing 8. The sealing between the motor housing 8 and the wind hood housing 9 is achieved through the motor outer stop 83 on the motor housing 8 and the motor inner stop 94 on the wind hood housing 9.

[0059] Further, please refer to Figure 4 , and in combination with Figures 13 - 18As shown, a reducer front flange 41 and a reducer rear flange 42 are respectively connected to the front and rear ends of the reducer assembly. The reducer front flange 41 is located at one end of the reducer assembly facing the motor assembly, and the reducer rear flange 42 is located at one end of the reducer assembly facing away from the motor assembly. Both the reducer front flange 41 and the reducer rear flange 42 are fixedly connected to the reducer housing 7. A first threaded hole 751 is provided on the first reinforcing rib 75 of the reducer housing 7. The first threaded hole 751 runs through the reducer housing 7 along the axial direction. The reducer front flange 41 and the reducer rear flange 42 are fixedly connected to the reducer housing 7 through the first threaded hole 751. A motor front flange 31 and a motor rear flange 32 are respectively connected to the front and rear ends of the motor assembly. The motor front flange 31 is located at one end of the motor assembly facing away from the reducer assembly, and the motor rear flange 32 is located at one end of the motor assembly facing the reducer assembly. Both the motor front flange 31 and the motor rear flange 32 are fixedly connected to the motor housing 8. A second threaded hole 851 is provided on the third reinforcing rib 85 of the motor housing 8. The second threaded hole 851 runs through the motor housing 8 along the axial direction. The motor front flange 31 and the motor rear flange 32 are fixedly connected to the motor housing 8 through the second threaded hole 851.

[0060] Furthermore, please refer to Figure 4 and combine with Figures 10 - 12 As shown, the speed reduction motor further includes two windshields 5. The two windshields 5 are respectively arranged at both ends of the blower housing 9, and two air inlets 53 are respectively arranged on the two windshields 5. A volute wall 91 is arranged inside the blower housing 9. The volute wall 91 and the two windshields 5 together form a vortex air duct. The air inlets 53 and the air outlet 96 are both communicated with the vortex air duct. When the fan 6 rotates, it drives the air flow to move in the vortex air duct, and its path refers to Figure 22 as shown by the arrow S1 in. The air flow is discharged from the air outlet 96, forming a negative pressure at the air inlets 53, so as to suck air from the outside through the reducer air duct 74 and the motor air duct 84 and supplement it to the air inlets 53. During this process, the air takes away the heat of the reducer housing 7 and the motor housing 8, thereby realizing the cooling of the reducer assembly and the motor assembly.

[0061] Specifically, an air inlet 53 is provided at the center of the wind deflector 5. The air inlet 53 can allow the motor shaft 1 or the reducer shaft to pass through. A flange 52 is protrudingly provided at the edge of the wind deflector 5. Matching walls 92 are provided on both sides of the volute wall 91. The flange 52 and the matching wall 92 are in clearance fit. The flanges 52 of the two wind deflectors 5 are respectively bent towards the front flange 41 of the reducer and the rear flange 32 of the motor. Thus, after the air passes through the reducer air duct 74 and the motor air duct 84, it continues to flow radially along the wind deflector 5 to the air inlet 53 at the center of the wind deflector 5 and enters the vortex air duct. The air flow path is longer and more heat is carried away, thereby further improving the heat dissipation effect. Mounting feet 51 are provided at the edge of the air inlet 53 of the wind deflector 5. The mounting feet 51 are used for fixedly connecting with the front flange 41 of the reducer or the rear flange 32 of the motor.

[0062] Please refer to Figures 7 - 9 As shown, the fan 6 is set as a radial flow fan 6. The fan blades 62 of the fan 6 extend along the radial direction of the fan 6 and a plurality of fan blades 62 are distributed at intervals along the circumferential direction of the fan 6. The fan 6 is also provided with a partition 63. The partition 63 is used for equally dividing the fan blades 62 along the axial direction of the fan 6, ensuring that sufficient negative pressure is provided at both air inlets 53 during the operation of the fan 6. Thus, the gas flow velocity in the reducer air duct 74 and the motor air duct 84 is guaranteed, and further the cooling and heat dissipation effect is guaranteed.

[0063] Please refer to Figures 13 - 21As shown in the figure, a second reinforcing rib 76 is further provided on the speed reducer housing 7. Two ends of the second reinforcing rib 76 are integrally provided with the speed reducer inner housing 71 and the speed reducer outer housing 72 respectively. There are two second reinforcing ribs 76 which are symmetrically arranged. At the position of the speed reducer outer housing 72 corresponding to the second reinforcing rib 76, a speed reducer lifting hole 761 and a speed reducer oil hole 762 extending radially along the speed reducer housing 7 are provided. Internal threads are machined in the speed reducer lifting hole 761 for installing a lifting lug or a lifting ring to realize lifting, and the speed reducer oil hole 762 is used for oil injection into the speed reducer assembly. At the position of the speed reducer outer housing 72 corresponding to the first reinforcing rib 75, a first protrusion 77 extending axially along the speed reducer housing 7 is provided. The first protrusion 77 is integrally provided with the speed reducer outer housing 72. A first through hole 771 extending axially along the speed reducer housing 7 is provided on the first protrusion 77. After a fastener passes through the first through hole 771, it is fixedly connected with the wind shield housing 9. A fourth reinforcing rib 86 is further provided on the motor housing 8. Two ends of the fourth reinforcing rib 86 are integrally provided with the motor inner housing 81 and the motor outer housing 82 respectively. There are two fourth reinforcing ribs 86 which are symmetrically arranged. At the position of the motor outer housing 82 corresponding to the fourth reinforcing rib 86, a motor lifting hole 861 extending radially along the motor housing 8 is provided. Internal threads are machined in the motor lifting hole 861 for installing a lifting lug or a lifting ring to realize lifting. At the position of the motor outer housing 82 corresponding to the third reinforcing rib 85, a second protrusion 87 extending axially along the motor housing 8 is provided. The second protrusion 87 is integrally provided with the motor outer housing 82. A second through hole 871 extending axially along the motor housing 8 is provided on the second protrusion 87. After a fastener passes through the second through hole 871, it is fixedly connected with the wind shield housing 9. Correspondingly, a third protrusion 95 is provided on the wind shield housing 9. The third protrusion 95 is integrally formed with the wind shield housing 9. There are multiple third protrusions 95, and the number and position thereof correspond to the number and position of the first protrusion 77 or the second protrusion 87. A third threaded hole 951 is provided on the third protrusion 95, and internal threads are provided at both ends of the third threaded hole 951. During installation, the speed reducer outer stop 73 on the speed reducer housing 7 is matched with the speed reducer inner stop 93 on the wind shield housing 9, and the first through hole 771 is aligned with the third threaded hole 951. After a fastener passes through the first through hole 771, it is fixedly connected with the third threaded hole 951, so as to realize the fixed connection between the speed reducer housing 7 and the wind shield housing 9. Similarly, the motor outer stop 83 on the motor housing 8 is matched with the motor inner stop 94 on the wind shield housing 9, and the second through hole 871 is aligned with the third threaded hole 951. After a fastener passes through the second through hole 871, it is fixedly connected with the third threaded hole 951, so as to realize the fixed connection between the speed reducer housing 7 and the wind shield housing 9.

[0064] Optionally, as Figures 1 - 3As shown in the figure, a protective net 97 is provided at the air outlet 96. The protective net 97 is made of steel structure and fixedly connected to the air duct housing 9 to prevent foreign objects from entering the inside of the air duct housing 9 through the air outlet 96 and causing damage to internal components. At the same time, please refer to Figure 1 , in the use state of the reduction motor in this embodiment, the air outlet 96 faces its bottom, further preventing foreign objects from entering the inside of the air duct housing 9 through the air outlet 96.

[0065] Obviously, the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the implementation manners of the present invention. For those of ordinary skill in the art, other different forms of changes or modifications can be made based on the above description. It is not necessary and impossible to enumerate all the implementation manners here. Any modifications, equivalent replacements, and improvements made within the spirit and principle of the present invention shall be included in the protection scope of the claims of the present invention.

Claims

1. Reducing motor, comprising a motor assembly and a speed reducer assembly, the motor shaft (1) of the motor assembly is connected to the speed reducer shaft of the speed reducer assembly and drives the speed reducer shaft to rotate, characterized in that, Further included are: a reduction gear housing (7), the reduction gear assembly is installed inside the reduction gear housing (7), and the reduction gear housing (7) is formed with a reduction gear air duct (74); a motor housing (8), the motor assembly is installed inside the motor housing (8), and the motor housing (8) is formed with a motor air duct (84); a wind hood housing (9), the wind hood housing (9) is located between the reduction gear housing (7) and the motor housing (8), both ends of the wind hood housing (9) are fixedly connected to the reduction gear housing (7) and the motor housing (8) respectively, and the wind hood housing (9) is provided with a communicating exhaust port (96) and two air inlets (53), and the two air inlets (53) are respectively communicated with the reduction gear air duct (74) and the motor air duct (84); a fan (6), the fan (6) is located inside the wind hood housing (9) and is driven by the motor shaft (1) or the reduction gear shaft, and a negative pressure is formed in the center of the fan (6), so that the air flows in the reduction gear air duct (74) and the motor air duct (84) respectively enter the inside of the wind hood housing (9) from the two air inlets (53) and are discharged from the exhaust port (96).

2. The speed reduction motor according to claim 1, wherein The reduction gear housing (7) is provided with a reduction gear inner shell (71), a reduction gear outer shell (72) and a first reinforcing rib (75), the reduction gear inner shell (71) and the reduction gear outer shell (72) jointly form the reduction gear air duct (74), the first reinforcing rib (75) is located inside the reduction gear air duct (74), and both ends of the first reinforcing rib (75) are fixedly connected to the reduction gear inner shell (71) and the reduction gear outer shell (72) respectively.

3. The speed reduction motor according to claim 2, wherein The first reinforcing rib (75) is provided as multiple, and the multiple first reinforcing ribs (75) are arranged at intervals along the circumferential direction of the reduction gear inner shell (71) and divide the reduction gear air duct (74) into several reduction gear sub-air ducts.

4. The speed reduction motor according to claim 3, wherein A plurality of first heat dissipation ribs (78) are arranged inside the reduction gear sub-air duct, and the plurality of first heat dissipation ribs (78) are fixedly arranged on the reduction gear inner shell (71) and are arranged at intervals along the circumferential direction of the reduction gear inner shell (71).

5. The speed reduction motor according to claim 1, characterized in that, The motor housing (8) is provided with a motor inner shell (81), a motor outer shell (82) and a third reinforcing rib (85), the motor inner shell (81) and the motor outer shell (82) jointly form the motor air duct (84), the third reinforcing rib (85) is located inside the motor air duct (84), and both ends of the third reinforcing rib (85) are fixedly connected to the motor inner shell (81) and the motor outer shell (82) respectively.

6. The speed reduction motor according to claim 5, wherein The third reinforcing rib (85) is provided as multiple, and the multiple third reinforcing ribs (85) are arranged at intervals along the circumferential direction of the motor inner shell (81) and divide the motor air duct (84) into several motor sub-air ducts.

7. The speed reduction motor according to claim 6, wherein, A plurality of second heat dissipation ribs (88) are arranged inside the motor sub-air duct, and the plurality of second heat dissipation ribs (88) are fixedly arranged on the motor inner shell (81) and are arranged at intervals along the circumferential direction of the motor inner shell (81).

8. The speed reduction motor according to claim 1, characterized in that, It further includes two windshields (5), the two windshields (5) are respectively arranged at two ends of the wind hood housing (9), two air inlets (53) are respectively arranged on the two windshields (5), a volute wall (91) is arranged inside the wind hood housing (9), and a volute air duct is formed jointly by the volute wall (91) and the two windshields (5), and both the air inlet (53) and the air outlet (96) are communicated with the volute air duct.

9. The speed reduction motor according to claim 8, characterized in that, An air inlet (53) is formed at the center of the windshield (5), the air inlet (53) can be penetrated by the motor shaft (1) or the speed reducer shaft, a flange (52) is protrudingly arranged at the edge of the windshield (5), and fitting walls (92) are arranged on both sides of the volute wall (91), and the flange (52) is in clearance fit with the fitting walls (92).

10. The speed reduction motor according to any one of claims 1-9, characterized in that, A protective net (97) is arranged at the air outlet (96).

Images