Worm gear planetary gear motor

Abstract

The utility model discloses a worm gear planetary gear motor, which relates to the technical field of motors, and comprises a protective shell, the lower surface of the protective shell is fixedly connected with a base plate, the upper surface of the base plate is provided with fixing screw holes close to four corners, and the lower surface of the inner wall of the protective shell is fixedly connected with a transmission mechanism. The left side of the transmission mechanism is fixedly connected with a speed reduction mechanism, the rear side of the upper surface of the protective shell is fixedly connected with a heat dissipation mechanism, and air inlet holes are formed in the positions, close to the lower right corner, of the front side and the rear side of the protective shell. According to the worm gear planetary gear motor, the motor drives the first gear to rotate, so that the output shaft rotates, then the motor is decelerated by the speed reducing mechanism, the worm and the worm gear are decelerated firstly, and when the output shaft is subjected to reverse rotation force and the reverse rotation force is transmitted to the worm, due to the self-locking property between the worm and the worm gear, the worm and the worm gear can be driven to rotate stably. And the output shaft is limited and cannot perform reverse transmission, so that the application range of the motor is enlarged.

Description

Technical Field

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

[0002] Planetary reduction motor is a widely used industrial product that can reduce the speed of the motor and increase the output torque. Planetary reduction motor can be used as a supporting component in lifting, excavation, transportation, construction and other industries.

[0003] For example, Chinese patent publication number CN220060481U discloses an electric motor equipped with a planetary gear reducer, including an electric motor and a planetary gear reducer connected to the output end of the electric motor, wherein an installation portion is provided at one end of the electric motor close to the planetary gear reducer, a connecting bracket is provided between the planetary gear reducer and the installation portion, and the connecting bracket and the installation portion are fixedly connected by a positioning assembly, and an elastic buffer pad is provided at one end of the connecting bracket close to the installation portion, which can reduce the impact between the electric motor and the planetary gear reducer, improve the stability of transmission and installation, and facilitate heat dissipation.

[0004] The existing technology has the following problems:

[0005] The motor is not self-locking, that is, the output position of the motor can rotate in the opposite direction to drive the internal mechanism components to reverse, but in some operating environments, such as on some large printing presses, it is necessary to place its reverse transmission, and self-locking is required to limit it. Utility Model Content

[0006] The utility model provides a worm gear planetary reduction motor to solve the problems raised in the above background technology.

[0007] In order to solve the above technical problems, the technical solution adopted by the utility model is:

[0008] A worm gear planetary reduction motor comprises a protective shell, the lower surface of the protective shell is fixedly connected to a substrate, the upper surface of the substrate is provided with fixing screw holes near the four corners, the lower surface of the inner wall of the protective shell is fixedly connected to a transmission mechanism, the left side of the transmission mechanism is fixedly connected to a reduction mechanism, the rear side of the upper surface of the protective shell is fixedly connected to a heat dissipation mechanism, and the front and rear sides of the protective shell are provided with air intake holes near the lower right corner.

[0009] Preferably, the transmission mechanism includes a motor, the lower surface of the motor is fixedly connected to the lower surface of the inner cavity of the protective shell near the right rear side, the output end of the motor is fixedly connected to a worm, the upper side of the worm is meshingly connected to a worm wheel, and the front axis of the worm wheel is fixedly connected to a transmission shaft.

[0010] Preferably, the reduction mechanism includes a first gear, the rear axis of the first gear is fixedly connected to the front side of the transmission shaft, the side of the first gear is meshingly connected with three second gears distributed in a ring, the rear side of the second gear is rotatably connected to a fixed plate, and the middle part of the fixed plate is rotatably connected to the outer wall of the transmission shaft.

[0011] Preferably, the side surface of the second gear is meshingly connected with a gear ring, the outer wall of the gear ring is fixedly sleeved with a first fixing frame, and the side surface of the first fixing frame is fixedly connected to the inner wall side surface of the protective shell.

[0012] Preferably, the front side of the second gear is rotatably connected to a transmission plate, the outer wall of the transmission plate is rotatably connected to a second fixed frame, the side of the second fixed frame is fixedly connected to the inner side of the protective shell, the front side axis of the transmission plate is fixedly connected to an output shaft, and the front end of the output shaft is located on the front side of the protective shell.

[0013] Preferably, the heat dissipation mechanism includes a first heat-conducting platform, the lower surface of which is fixedly connected to the upper surface of the protective shell near the rear side, a cooling fan is fixedly connected to the upper surface of the protective shell near the rear side, and the cooling fan is located on the right side of the first heat-conducting platform.

[0014] Preferably, a second heat-conducting platform is fixedly connected to a position on the upper surface of the protective housing near the right rear side, and a cooling fan is located at the upper left of the second heat-conducting platform.

[0015] Preferably, four sides of the second heat-conducting platform are in a closed state, and an inner lower surface of the second heat-conducting platform is provided with a vent hole extending to the interior of the protective shell.

[0016] Due to the adoption of the above technical solution, the utility model has achieved the following technical progress compared with the prior art:

[0017] 1. The utility model provides a worm gear planetary reduction motor, which adopts the cooperation of a transmission mechanism, a motor, a worm, a worm wheel, a transmission shaft, a reduction mechanism, a first gear and an output shaft. The motor drives the first gear to rotate, so that the output shaft rotates, and then the motor is decelerated by the worm and the worm wheel before being decelerated by the reduction mechanism. When the output shaft is subjected to a reverse rotational force and transmitted to the worm, due to the self-locking property between the worm and the worm wheel, the output shaft is restricted from reverse transmission, thereby increasing the application range of the motor.

[0018] 2. The utility model provides a worm gear planetary reduction motor, which adopts a protective shell, a heat dissipation mechanism, a first heat conduction platform, a cooling fan, a second heat conduction platform, air vents and air inlet holes. The cooling fan is used to dissipate heat inside the protective shell to extend the service life of the machine. Relying on its structure, only one cooling fan is used, which can achieve multi-directional cooling operation, reduce production costs, and reasonably use the overall structural shape. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0020] Figure 2 It is a partial cross-sectional three-dimensional structural schematic diagram of the utility model;

[0021] Figure 3 It is a three-dimensional structural schematic diagram of the transmission mechanism and the speed reduction mechanism of the utility model;

[0022] Figure 4 It is a three-dimensional structural schematic diagram of the second gear portion of the utility model;

[0023] Figure 5 It is a partial cross-sectional three-dimensional structural schematic diagram of the heat dissipation mechanism of the utility model.

[0024] In the figure: 1. protective shell; 2. base plate; 3. fixing screw hole; 4. transmission mechanism; 41. motor; 42. worm; 43. worm wheel; 44. transmission shaft; 5. reduction mechanism; 51. first gear; 52. second gear; 53. fixing plate; 54. gear ring; 55. first fixing frame; 56. second fixing frame; 57. transmission plate; 58. output shaft; 6. heat dissipation mechanism; 61. first heat conduction platform; 62. cooling fan; 63. second heat conduction platform; 64. air vent; 7. air inlet. DETAILED DESCRIPTION

[0025] In order to make the technical means, creative features, objectives and effects achieved by the present invention easy to understand, the present invention is further described below in conjunction with specific implementation methods.

[0026] like Figure 1 , Figure 2 As shown, a worm gear planetary reduction motor comprises a protective shell 1, a base plate 2 is fixedly connected to the lower surface of the protective shell 1, fixing screw holes 3 are provided on the upper surface of the base plate 2 near the four corners, a transmission mechanism 4 is fixedly connected to the lower surface of the inner wall of the protective shell 1, a reduction mechanism 5 is fixedly connected to the left side of the transmission mechanism 4, a heat dissipation mechanism 6 is fixedly connected to the rear side of the upper surface of the protective shell 1, and air inlet holes 7 are provided on the front and rear sides of the protective shell 1 near the lower right corner.

[0027] It should be noted that the fixing screw hole 3 is used to fix the protective shell 1. There is a structure for oil delivery on the protective shell 1 to facilitate the filling of lubricating oil into the protective shell 1 so as to reduce the friction between the multiple components inside the protective shell 1.

[0028] like Figure 3 As shown, the transmission mechanism 4 includes a motor 41, the lower surface of the motor 41 is fixedly connected to the lower surface of the inner cavity of the protective shell 1 near the right rear side, the output end of the motor 41 is fixedly connected to a worm 42, the upper side of the worm 42 is meshingly connected to a worm wheel 43, and the front axis of the worm wheel 43 is fixedly connected to a transmission shaft 44.

[0029] It should be noted that the motor 41 drives the worm 42 to rotate, and when the worm 42 rotates, it drives the worm wheel 43 to rotate. At the same time, after the worm wheel 43 is transmitted by the worm 42, the speed of the motor 41 decreases relative to the worm 42. When there is a high speed ratio between the worm 42 and the worm wheel 43, there is self-locking between the worm 42 and the worm wheel 43.

[0030] like Figure 3 , Figure 4 As shown, the reduction mechanism 5 includes a first gear 51, the rear axis of the first gear 51 is fixedly connected to the front side of the transmission shaft 44, the side of the first gear 51 is meshedly connected with three second gears 52 distributed in a ring, the rear side of the second gear 52 is rotatably connected to a fixed plate 53, and the middle part of the fixed plate 53 is rotatably connected to the outer wall of the transmission shaft 44.

[0031] It should be noted that when the worm gear 43 rotates, it drives the transmission shaft 44 to rotate. When the transmission shaft 44 rotates, it drives the first gear 51 to rotate. When the first gear 51 rotates, it drives the three second gears 52 to rotate synchronously in the same direction.

[0032] like Figure 3 , Figure 4 As shown, the side of the second gear 52 is meshedly connected with a gear ring 54 , the outer wall of the gear ring 54 is fixedly sleeved with a first fixing frame 55 , and the side of the first fixing frame 55 is fixedly connected to the inner wall side of the protective shell 1 .

[0033] It should be noted that the ring gear 54 is fixed, so that when the second gear 52 rotates, the second gear 52 is meshed with the ring gear 54 , causing the second gear 52 to revolve around the first gear 51 .

[0034] like Figure 3 , Figure 4As shown, the front side of the second gear 52 is rotatably connected to a transmission plate 57, the outer wall of the transmission plate 57 is rotatably connected to a second fixed frame 56, the side of the second fixed frame 56 is fixedly connected to the inner side of the protective shell 1, and the front side axis of the transmission plate 57 is fixedly connected to an output shaft 58, and the front end of the output shaft 58 is located on the front side of the protective shell 1.

[0035] It should be noted that when the second gear 52 revolves around the first gear 51 , the three second gears 52 will drive the transmission plate 57 to rotate, and the rotation speed of the transmission plate 57 is equivalent to the rotation speed of the second gear 52 revolving around the first gear 51 .

[0036] like Figure 1 , Figure 5 As shown, the heat dissipation mechanism 6 includes a first heat-conducting platform 61, the lower surface of the first heat-conducting platform 61 is fixedly connected to the upper surface of the protective shell 1 near the rear side, and a cooling fan 62 is fixedly connected to the upper surface of the protective shell 1 near the rear side, and the cooling fan 62 is located on the right side of the first heat-conducting platform 61.

[0037] It should be noted that the first heat-conducting platform 61 is made of a heat-conducting material, and its left and right sides are open. When the cooling fan 62 rotates, the wind direction is from left to right, and the air flow brings out the heat inside the protective housing 1 absorbed by the first heat-conducting platform 61.

[0038] like Figure 1 , Figure 5 As shown, a second heat-conducting platform 63 is fixedly connected to the upper surface of the protective housing 1 near the right rear side, and a cooling fan 62 is located at the upper left of the second heat-conducting platform 63 .

[0039] It should be noted that the second heat-conducting platform 63 absorbs the heat generated by the motor 41, and the air can move from the upper and lower sides of the second heat-conducting platform 63. When the cooling fan 62 blows the air from left to right, the flow velocity on the upper side of the second heat-conducting platform 63 increases and the air pressure decreases, so that the air flow direction inside the second heat-conducting platform 63 is from bottom to top to take away the heat on the second heat-conducting platform 63.

[0040] like Figure 2 , Figure 5 As shown, the four sides of the second heat-conducting platform 63 are in a closed state, and a vent hole 64 extending to the inside of the protective housing 1 is opened on the inner lower surface of the second heat-conducting platform 63 .

[0041] It should be noted that the second heat-conducting platform 63 is made of a heat-conducting material. The structure of the second heat-conducting platform 63 prevents air from entering the inside of the second heat-conducting platform 63 from the side of the second heat-conducting platform 63, and can only pass through the air inlet 7 and the air vent 64, so that the air first enters the inside of the protective shell 1, and after passing through the motor 41, it carries the heat through the air vent 64 to enter the inner side of the second heat-conducting platform 63, thereby accelerating the heat dissipation of the motor 41.

[0042] The working principle of the utility model is as follows: first, the motor 41 drives the worm 42 to rotate, and when the worm 42 rotates, it drives the worm wheel 43 to rotate. At the same time, after the worm wheel 43 is driven by the worm 42, the speed of the motor 41 decreases relative to the worm 42. When there is a high speed ratio between the worm 42 and the worm wheel 43, there is self-locking between the worm 42 and the worm wheel 43. The motor 41 drives the first gear 51 to rotate, so that the output shaft 58 rotates, and then the motor 41 is decelerated by the worm 42 and the worm wheel 43 before being decelerated by the reduction mechanism 5. When the output shaft 58 is subjected to the reverse rotation force and transmitted to the worm 42, due to the self-locking between the worm 42 and the worm wheel 43, the output shaft 58 is restricted from reverse transmission, thereby increasing the application range of the motor. Finally, the first heat conduction platform 61 is made of easy heat conductive material. The left and right sides are open. When the cooling fan 62 rotates, the wind direction is from left to right. The air flow brings out the heat inside the protective shell 1 absorbed by the first heat-conducting platform 61. The second heat-conducting platform 63 is made of easy-to-conduct heat-conducting material. The structure of the second heat-conducting platform 63 prevents air from entering the inside of the second heat-conducting platform 63 from the side of the second heat-conducting platform 63, and can only pass through the air inlet 7 and the air vent 64, so that the air first enters the inside of the protective shell 1, and after passing through the motor 41, it carries the heat through the air vent 64 to enter the inner side of the second heat-conducting platform 63, accelerates the heat dissipation of the motor 41, and dissipates the heat inside the protective shell 1 through the cooling fan 62, thereby extending the service life of the machine. Relying on its structure, only one cooling fan 62 is used, which not only achieves multi-directional cooling operation, reduces production costs, but also reasonably uses the overall structural shape.

[0043] The above shows and describes the basic principle and main features of the utility model and the advantages of the utility model. Those skilled in the art should understand that the utility model is not limited by the above embodiments. The above embodiments and descriptions are only for explaining the principle of the utility model. Without departing from the spirit and scope of the utility model, the utility model may have various changes and improvements, which fall within the scope of the utility model to be protected. The scope of protection claimed by the utility model is defined by the attached claims and their equivalents.

Claims

1. A worm gear planetary reduction motor, comprising a protective housing (1), characterized in that: The lower surface of the protective shell (1) is fixedly connected to a base plate (2), the upper surface of the base plate (2) is provided with fixing screw holes (3) near the four corners, the lower surface of the inner wall of the protective shell (1) is fixedly connected to a transmission mechanism (4), the left side of the transmission mechanism (4) is fixedly connected to a speed reduction mechanism (5), the rear side of the upper surface of the protective shell (1) is fixedly connected to a heat dissipation mechanism (6), and the front and rear sides of the protective shell (1) are provided with air intake holes (7) near the lower right corner.

2. A worm gear planetary reduction motor according to claim 1, characterized in that: The transmission mechanism (4) comprises a motor (41), the lower surface of the motor (41) being fixedly connected to a position near the right rear side of the lower surface of the inner cavity of the protective shell (1), the output end of the motor (41) being fixedly connected to a worm (42), the upper side of the worm (42) being meshingly connected to a worm wheel (43), and the front axis of the worm wheel (43) being fixedly connected to a transmission shaft (44).

3. A worm gear planetary reduction motor according to claim 2, characterized in that: The speed reduction mechanism (5) comprises a first gear (51), the rear axis of the first gear (51) is fixedly connected to the front side of the transmission shaft (44), the side of the first gear (51) is meshedly connected with three second gears (52) distributed in an annular manner, the rear side of the second gear (52) is rotatably connected to a fixed plate (53), and the middle part of the fixed plate (53) is rotatably connected to the outer wall of the transmission shaft (44).

4. A worm gear planetary reduction motor according to claim 3, characterized in that: The side surface of the second gear (52) is meshingly connected with a gear ring (54), the outer wall of the gear ring (54) is fixedly sleeved with a first fixing frame (55), and the side surface of the first fixing frame (55) is fixedly connected to the inner wall side surface of the protective shell (1).

5. The worm gear planetary reduction motor according to claim 4, characterized in that: The front side of the second gear (52) is rotatably connected to a transmission plate (57), the outer wall of the transmission plate (57) is rotatably connected to a second fixed frame (56), the side of the second fixed frame (56) is fixedly connected to the inner side of the protective shell (1), the front side axis of the transmission plate (57) is fixedly connected to an output shaft (58), and the front end of the output shaft (58) is located on the front side of the protective shell (1).

6. The worm gear planetary reduction motor according to claim 1, characterized in that: The heat dissipation mechanism (6) comprises a first heat-conducting platform (61), the lower surface of the first heat-conducting platform (61) being fixedly connected to a position of the upper surface of the protective shell (1) near the rear side, a cooling fan (62) being fixedly connected to a position of the upper surface of the protective shell (1) near the rear side, and the cooling fan (62) being located on the right side of the first heat-conducting platform (61).

7. The worm gear planetary reduction motor according to claim 6, characterized in that: A second heat-conducting platform (63) is fixedly connected to a position near the right rear side of the upper surface of the protective housing (1), and a cooling fan (62) is located on the upper left of the second heat-conducting platform (63).

8. The worm gear planetary reduction motor according to claim 7, characterized in that: The four sides of the second heat-conducting platform (63) are in a closed state, and a ventilation hole (64) extending to the interior of the protective shell (1) is provided on the inner lower surface of the second heat-conducting platform (63).

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