Worm and gear motor with planetary reducing mechanism

Abstract

The utility model belongs to the technical field of worm and gear motors, and particularly relates to a worm and gear motor with a planetary reducing mechanism, which comprises a motor main body, one end of the motor main body is provided with a reduction gearbox, the top end of the reduction gearbox is fixedly provided with a box cover, the inner side of the reduction gearbox is provided with a reducing mechanism, and the reducing mechanism is used for reducing the output rotating speed of the motor; the speed reduction mechanism comprises a transmission worm fixed to the output end of the motor, a worm gear is arranged at the position, corresponding to the transmission worm, of the inner side of the speed reduction box, the worm gear is connected with the transmission worm in a meshed mode, and a supporting shaft is fixed to one side of the worm gear and rotationally connected with the speed reduction box through a second bearing. And a planetary gear ring is arranged on the inner side of the reduction gearbox on the other side of the worm gear. According to the device, when parts in the device need to be replaced or overhauled, the parts of the device can be conveniently and rapidly disassembled or assembled, and the working efficiency during device overhauling or replacing can be effectively improved.

Description

Technical Field

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

[0002] A DC motor is an electric motor that converts DC electrical energy into mechanical energy. It is widely used in electric traction due to its good speed regulation performance. Worm gear reduction motors and gear reduction motors are the most common. Worm gear reduction motors are mainly used for staggered shaft transmission and have a self-locking function. Gear reduction motors are mainly used for parallel shaft transmission and have no self-locking function. At present, the automotive industry, such as the pedal system, requires a large speed ratio for the motor and requires self-locking. With the rapid development of mechanical technology, the new worm gear plus planetary reduction structure DC motor has also been technically improved.

[0003] However, in the prior art, the motors all adopt a double worm gear transmission worm structure, and the gears must be finely processed. The cost of the entire motor is high and the structure is complex. When the parts inside the device are worn out after a long period of use, they need to be replaced or repaired. However, the existing device has a high degree of integration and cannot quickly replace some parts, which makes it inconvenient to install and disassemble the parts and reduces the efficiency of disassembly. Utility Model Content

[0004] The purpose of the present invention is to provide a worm gear motor with a planetary reduction mechanism, which can conveniently and quickly disassemble or install the parts of the device when the parts inside the device need to be replaced or repaired, and can effectively improve the work efficiency when the device is repaired or replaced.

[0005] The technical solutions adopted in this utility are as follows:

[0006] A worm gear motor with a planetary reduction mechanism comprises a motor body, a reduction box is arranged at one end of the motor body, a box cover is fixed at the top of the reduction box, a reduction mechanism is arranged inside the reduction box, and the reduction mechanism is used to reduce the output speed of the motor;

[0007] The reduction mechanism includes a transmission worm fixed to the output end of the motor, a worm wheel is arranged on the inner side of the reduction box and at a position corresponding to the transmission worm, the worm wheel is meshed with the transmission worm, a support shaft is fixed to one side of the worm wheel, the support shaft is rotatably connected to the reduction box through a second bearing, a planetary gear ring is arranged on the inner side of the reduction box located on the other side of the worm wheel, a plurality of planetary gears are arranged on the inner side of the planetary gear ring, a plurality of planetary gears are meshed with the planetary gear ring, a sun gear is meshed with a position between the plurality of planetary gears, A transmission shaft is fixed to the side of the sun gear close to the worm gear, and the transmission shaft is plug-connected to the worm gear through a plug-in groove opened on one side of the worm gear. A planet carrier is provided on the inner side of the reduction box located on the other side of the planetary gear ring, and the planet carrier is connected to the planetary gear through a plug-in assembly. An output shaft is fixed to the side of the planet carrier away from the planetary gear, and one end of the output shaft away from the planet carrier extends to the outside of the box cover, and a first bearing is fixed at a position of the box cover corresponding to the output shaft, and a fixing ring is fixed to the outside of the output shaft close to the first bearing, and the fixing ring is rotatably connected to the first bearing.

[0008] In a preferred embodiment, a plurality of positioning blocks are evenly fixed on the inner side of the reduction box, positioning grooves are provided at positions of the planetary gear ring corresponding to the positioning blocks, and the planetary gear ring is slidably connected to the reduction box via the positioning blocks and the positioning grooves.

[0009] The transmission gear of the present invention is a gear which is connected with the gear of the gear to the external gear of the gear, and the gear is connected with the gear of the gear to the external gear of the gear through a hole in the middle of the gear to connect the gear of the gear to the gear of the gear.

[0010] In a preferred solution, limit blocks are fixed on both sides of the moving block, and the moving block is slidably connected to the planet carrier and the connecting block respectively through the limit blocks.

[0011] In a preferred solution, the transmission shaft is configured to be flat with arc-shaped structures on both sides, and the plug-in slot is adapted to the transmission shaft.

[0012] In a preferred embodiment, the top edge of the connecting hole is configured as an arc chamfer.

[0013] In a preferred solution, the outer ring of the second bearing is arranged on the inner side of the reduction gearbox, and the inner ring of the second bearing fits with the outer surface of the support shaft.

[0014] The technical effects achieved by this utility model are:

[0015] The utility model adopts the matching structural design of the transmission shaft, the plug-in slot and the plug-in assembly, so that when the device needs to be disassembled, the planetary carrier, the planetary gear, the sun gear and the worm gear can be disassembled efficiently and quickly in sequence, so that when one of the parts is damaged, it is not necessary to replace the entire connected parts, but only one of them needs to be replaced, thereby effectively improving the disassembly work efficiency, reducing the cost of parts replacement, and improving the practicality of the device;

[0016] The utility model adopts the structural design of the plug-in assembly, so that the planetary gear and the planetary carrier can be disassembled conveniently and quickly, avoiding the need to replace the entire planetary carrier and the planetary gear when one of the planetary gears is damaged. While ensuring the stability of the planetary gear during rotation, the displacement of the planetary gear during operation is effectively avoided, thereby improving the stability of the device and the work efficiency of disassembling the planetary gear and the planetary carrier. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a schematic diagram of the overall structure of an embodiment of this utility;

[0018] Figure 2 It is a schematic diagram of the internal structure of the reduction box of the practical embodiment;

[0019] Figure 3 It is a schematic diagram of the structure of the connecting hole and the plug slot of the embodiment of the utility model;

[0020] Figure 4 It is a structural schematic diagram of the speed reduction mechanism of the embodiment of the present utility model;

[0021] Figure 5 It is a structural schematic diagram of the plug-in assembly of the embodiment of the present utility model;

[0022] Figure 6 It is a structural schematic diagram of the positioning groove of the embodiment of the present utility model.

[0023] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0024] 1. Motor body; 2. Reducer box; 3. Box cover; 4. Output shaft; 5. Positioning block; 6. First bearing; 7. Fixing ring; 8. Planet carrier; 9. Planetary gear; 10. Connecting block; 11. Connecting hole; 12. Sun gear; 13. Transmission shaft; 14. Planetary gear ring; 15. Positioning groove; 16. Worm gear; 17. Plug-in groove; 18. Second bearing; 19. Transmission worm; 20. Support shaft; 21. Knob; 22. Transmission screw; 23. Moving block; 24. Extrusion block; 25. Clamping block; 26. Spring; 27. Limiting block. DETAILED DESCRIPTION

[0025] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the specific implementation methods of the present invention are described in detail below in conjunction with the accompanying drawings.

[0026] In the following description, many specific details are set forth to facilitate a full understanding of the present invention, but the present invention may also be implemented in other ways different from those described herein, and those skilled in the art may make similar generalizations without violating the connotation of the present invention, so the present invention is not limited to the specific embodiments disclosed below.

[0027] Secondly, the term "one embodiment" or "embodiment" as used herein refers to a specific feature, structure or characteristic that may be included in at least one implementation of the present utility. The phrase "in a preferred embodiment" that appears in different places in this specification does not refer to the same embodiment, nor is it a separate or selective embodiment that is mutually exclusive with other embodiments.

[0028] Secondly, the present invention is described in detail with reference to the schematic diagram. When describing the present embodiment in detail, for the sake of convenience, the cross-sectional diagram showing the device structure will not be partially enlarged according to the general scale, and the schematic diagram is only an example, which should not limit the scope of protection of the present invention. In addition, in actual production, the three-dimensional dimensions of length, width and depth should be included.

[0029] Please refer to the attached Figure 1-Figure 6 As shown, the utility model provides a worm gear motor with a planetary reduction mechanism, comprising a motor body 1, a reduction box 2 is arranged at one end of the motor body 1, a box cover 3 is fixed to the top of the reduction box 2, and a reduction mechanism is arranged inside the reduction box 2, and the reduction mechanism is used to reduce the output speed of the motor;

[0030] The reduction mechanism includes a transmission worm 19 fixed to the output end of the motor, a worm wheel 16 is arranged on the inner side of the reduction box 2 and at a position corresponding to the transmission worm 19, the worm wheel 16 is meshed with the transmission worm 19, a support shaft 20 is fixed to one side of the worm wheel 16, the support shaft 20 is rotatably connected to the reduction box 2 through a second bearing 18, a planetary gear ring 14 is arranged on the inner side of the reduction box 2 at the other side of the worm wheel 16, a plurality of planetary gears 9 are arranged on the inner side of the planetary gear ring 14, the plurality of planetary gears 9 are meshed with the planetary gear ring 14, a sun gear 12 is meshed with a position between the plurality of planetary gears 9, and the sun gear 12 is meshed with a position between the plurality of planetary gears 9. A transmission shaft 13 is fixed to the side of the wheel 12 close to the worm gear 16, and the transmission shaft 13 is plugged and connected to the worm gear 16 through a plug-in groove 17 opened on one side of the worm gear 16. A planet carrier 8 is arranged on the inner side of the reduction box 2 on the other side of the planetary gear ring 14. The planet carrier 8 is connected to the planetary gear 9 through a plug-in assembly. An output shaft 4 is fixed to the side of the planet carrier 8 away from the planetary gear 9. One end of the output shaft 4 away from the planet carrier 8 extends to the outside of the box cover 3, and a first bearing 6 is fixed at a position corresponding to the box cover 3 and the output shaft 4. A fixing ring 7 is fixed to the outside of the output shaft 4 close to the first bearing 6, and the fixing ring 7 is rotatably connected to the first bearing 6.

[0031] Specifically, when in use, the motor body 1 drives the transmission worm 19 to rotate, and when the transmission worm 19 rotates, it drives the worm wheel 16 to rotate. When the worm wheel 16 rotates, it drives the sun gear 12 to rotate through the transmission shaft 13, so that the sun gear 12 drives the multiple planetary gears 9 meshing with it to make circular motion along the inner gear ring of the planetary gear ring 14, thereby driving the planetary carrier 8 and the output shaft 4 to rotate through the plug-in assembly, and then transmitting torque outward. When disassembling, first remove the box cover 3, and then separate the planetary carrier 8 and the planetary gear 9 through the plug-in assembly, so that the planetary carrier 8 and the planetary gear 9 can be disassembled, and then the planetary gear ring 14 is taken out from the inside of the reduction box 2, and then the sun gear 12 can be disassembled through the transmission shaft 13 and the worm wheel 16 in turn, so that the parts inside the device can be disassembled in turn, which is convenient for subsequent replacement or maintenance, thereby effectively improving the disassembly work efficiency, reducing the cost of parts replacement, and improving the practicality of the device.

[0032] In a preferred embodiment, please refer to Figure 2 and Figure 3 A plurality of positioning blocks 5 are evenly fixed on the inner side of the reduction box 2, and positioning grooves 15 are provided at positions of the planetary gear ring 14 corresponding to the positioning blocks 5. The planetary gear ring 14 is slidably connected to the reduction box 2 through the positioning blocks 5 and the positioning grooves 15. The planetary gear ring 14 can be rotationally limited by the positioning blocks 5 and the positioning grooves 15 matched therewith, thereby effectively preventing the planetary gear ring 14 from rotating inside the reduction box 2, thereby improving the stability of the planetary gear ring 14.

[0033] Next, please refer to Figure 3 and Figure 5 The plug-in assembly includes a connecting block 10, which is arranged at a position corresponding to the planet carrier 8 and the planetary gear 9. The connecting block 10 is fixedly connected to the planet carrier 8. The connecting block 10 is plugged and connected to the planetary gear 9 through a connecting hole 11 opened on one side of the planetary gear 9. The inner side of the connecting block 10 is slidably connected to an extrusion block 24, and a moving block 23 is fixed to the top of the extrusion block 24. The moving block 23 is slidably connected to the planet carrier 8. The inner side of the planet carrier 8 is rotatably connected to a transmission screw 22, and one side of the transmission screw 22 The end extends to the inner side of the moving block 23, the transmission screw 22 is threadedly connected to the moving block 23, and the lower end of the connecting block 10 is slidably connected with a clamping block 25 on both sides, the upper end inclined surface of the clamping block 25 contacts the lower inclined surface of the extrusion block 24, and a spring 26 is arranged between the two clamping blocks 25, and the two ends of the spring 26 are respectively fixedly connected to the two clamping blocks 25, and the top end of the transmission screw 22 extends to the outside of the top end of the planetary carrier 8, and a knob 21 is fixed to the end of the transmission screw 22 located on the outside of the top end of the planetary carrier 8.

[0034] In this embodiment, the lower ends of both sides of the extrusion block 24 are set as inclined surfaces, and the top ends of the sides of the two clamping blocks 25 close to each other are set as inclined surfaces adapted to the lower inclined surfaces of the extrusion block 24. A clamping groove is provided at the corresponding position of the inner side of the planetary gear 9 and the clamping block 25. When in use, first, the knob 21 is rotated so that the knob 21 drives the transmission screw 22 to rotate. When the transmission screw 22 rotates, the moving block 23 and the extrusion block 24 threadedly connected thereto are driven to move along the axial direction of the transmission screw 22. When the extrusion block 24 moves to disengage from the clamping block 25, the extrusion block 24 cancels the extrusion effect on the clamping block 25. At this time, under the elastic effect of the spring 26 The two clamping blocks 25 are moved in the direction of approaching each other, so that when the clamping block 25 is disengaged from the clamping slot, the clamping block 25 cancels the limit on the planetary gear 9, and the planetary gear 9 and the connecting block 10 can be disassembled, so that the planetary gear 9 and the planetary carrier 8 can be disassembled conveniently and quickly, avoiding the need to replace the entire planetary carrier 8 and the planetary gear 9 when one of the planetary gears 9 is damaged. While ensuring the stability of the planetary gear 9 during rotation, it is effectively avoided that the planetary gear 9 is displaced during operation, thereby improving the stability of the device and the work efficiency of disassembly between the planetary gear 9 and the planetary carrier 8.

[0035] Secondly, please also refer to Figure 5Limit blocks 27 are fixed on both sides of the moving block 23. The moving block 23 is slidably connected to the planetary carrier 8 and the connecting block 10 respectively through the limit blocks 27. The structural design of the limit blocks 27 enables the moving block 23 to be rotationally limited. When the transmission screw 22 rotates, the moving block 23 moves along the axial direction of the transmission screw 22 under the limiting action of the limit blocks 27, thereby avoiding the movement of the moving block 23.

[0036] In order to further understand and explain the structure and shape of the transmission shaft 13 and the plug slot 17, Figure 2 For example, the transmission shaft 13 is set to be flat with arc-shaped structures on both sides, and the plug-in slot 17 is adapted to the transmission shaft 13. Through the flat structural design of the transmission shaft 13 and the plug-in slot 17, when the worm gear 16 rotates, the sun gear 12 can be driven to rotate through the transmission shaft 13, and it can be easily disassembled.

[0037] In a preferred embodiment, please refer to Figure 3 and Figure 5 The top edge of the connecting hole 11 is set to be an arc chamfer.

[0038] In this embodiment, the arc chamfer design of the connecting hole 11 allows the connecting block 10 and the planetary gear 9 to be installed with the connecting block 10 and the connecting hole 11 inclined at a certain angle. This structural design allows the connecting block 10 to be easily moved to the inside of the connecting hole 11, thereby improving the convenience of installation.

[0039] Next, please refer to Figure 3 and Figure 4 The outer ring of the second bearing 18 is arranged on the inner side of the reduction box 2, and the inner ring of the second bearing 18 fits with the outer surface of the support shaft 20. Through the structural design of the support shaft 20 and the second bearing 18, the support shaft 20 can provide auxiliary support for the worm gear 16 while reducing the friction between the support shaft 20 and the reduction box 2, thereby reducing the wear of the support shaft 20 and the worm gear 16 and improving the service life of the worm gear 16 and the support shaft 20.

[0040] The working principle of the utility model is as follows: when in use, the motor body 1 drives the transmission worm 19 to rotate, and when the transmission worm 19 rotates, it drives the worm wheel 16 to rotate, and when the worm wheel 16 rotates, it drives the sun gear 12 to rotate through the transmission shaft 13, so that the sun gear 12 drives the multiple planetary gears 9 meshing with it to make circular motion along the inner gear ring of the planetary gear ring 14, thereby driving the planetary carrier 8 and the output shaft 4 to rotate through the plug-in assembly, and then transmitting the torque outward. When disassembling, first remove the box cover 3, and then separate the planetary carrier 8 from the planetary gear 9 through the plug-in assembly, first turn the knob 21 so that the knob 21 drives the transmission screw 22 to rotate, and when the transmission screw 22 rotates, it drives the screw connected with it threadedly The moving block 23 and the extruding block 24 move along the axial direction of the transmission screw 22. When the extruding block 24 moves to be disengaged from the clamping block 25, the extruding block 24 cancels the extruding effect on the clamping block 25. At this time, the two clamping blocks 25 are moved in a direction close to each other under the elastic action of the spring 26. Therefore, when the clamping block 25 is disengaged from the clamping slot, the clamping block 25 cancels the limit on the planetary gear 9, and the planetary gear 9 and the connecting block 10 can be disassembled, and then the planetary gear ring 14 can be taken out from the inside of the reduction box 2, and then the sun gear 12 can be disassembled through the transmission shaft 13 and the worm gear 16 in turn, and the parts inside the device can be disassembled in turn, which is convenient for subsequent replacement or maintenance and installation. The reverse operation can be performed.

[0041] The above is only a preferred implementation of the present invention. It should be noted that, for ordinary technicians in the technical field, several improvements and modifications can be made without departing from the principle of the present invention, and these improvements and modifications should also be regarded as the protection scope of the present invention. The structures, devices and operating methods not specifically described and explained in the present invention shall be implemented according to the conventional means in the field unless otherwise specified and limited.

Claims

1. A worm gear motor with a planetary reduction mechanism, characterized in that: The motor comprises a motor body (1), a reduction box (2) is arranged at one end of the motor body (1), a box cover (3) is fixed at the top end of the reduction box (2), and a reduction mechanism is arranged inside the reduction box (2), the reduction mechanism is used to reduce the output speed of the motor; The reduction mechanism comprises a transmission worm (19) fixed to the output end of the motor, a worm wheel (16) is arranged on the inner side of the reduction box (2) and at a position corresponding to the transmission worm (19), the worm wheel (16) is meshingly connected with the transmission worm (19), a support shaft (20) is fixed on one side of the worm wheel (16), the support shaft (20) is rotatably connected with the reduction box (2) through a second bearing (18), a planetary gear ring (14) is arranged on the inner side of the reduction box (2) at the other side of the worm wheel (16), a plurality of planetary gears (9) are arranged on the inner side of the planetary gear ring (14), the plurality of planetary gears (9) are meshingly connected with the planetary gear ring (14), a sun wheel (12) is meshingly connected at a position between the plurality of planetary gears (9), the sun wheel (12) ) is fixed with a transmission shaft (13) on a side close to the worm gear (16), and the transmission shaft (13) is plug-connected with the worm gear (16) through a plug-in groove (17) provided on one side of the worm gear (16); a planet carrier (8) is provided on the inner side of the reduction box (2) located on the other side of the planetary gear ring (14); the planet carrier (8) is connected with the planetary gear (9) through a plug-in assembly; an output shaft (4) is fixed on a side of the planet carrier (8) away from the planetary gear (9); an end of the output shaft (4) away from the planet carrier (8) extends to the outside of the box cover (3); a first bearing (6) is fixed at a position of the box cover (3) corresponding to the output shaft (4); a fixing ring (7) is fixed on the outer side of the output shaft (4) close to the first bearing (6); and the fixing ring (7) is rotatably connected with the first bearing (6).

2. A worm gear motor with a planetary reduction mechanism according to claim 1, characterized in that: A plurality of positioning blocks (5) are evenly fixed on the inner side of the reduction box (2); positioning grooves (15) are provided at positions of the planetary gear ring (14) corresponding to the positioning blocks (5); and the planetary gear ring (14) is slidably connected to the reduction box (2) via the positioning blocks (5) and the positioning grooves (15).

3. The worm gear motor with a planetary reduction mechanism according to claim 1, characterized in that: The plug-in assembly comprises a connecting block (10), the connecting block (10) being arranged at a position corresponding to the planetary carrier (8) and the planetary gear (9), the connecting block (10) being fixedly connected to the planetary carrier (8), the connecting block (10) being plug-connected to the planetary gear (9) through a connecting hole (11) provided on one side of the planetary gear (9), an extrusion block (24) being slidably connected to the inner side of the connecting block (10), a moving block (23) being fixed to the top end of the extrusion block (24), the moving block (23) being slidably connected to the planetary carrier (8), a transmission screw (22) being rotatably connected to the inner side of the planetary carrier (8), the transmission screw (22) being ) extends to the inner side of the moving block (23), the transmission screw (22) is threadedly connected to the moving block (23), both sides of the lower end of the connecting block (10) are slidably connected with a clamping block (25), the upper end inclined surface of the clamping block (25) is in contact with the lower inclined surface of the extrusion block (24), a spring (26) is arranged between the two clamping blocks (25), the two ends of the spring (26) are respectively fixedly connected to the two clamping blocks (25), the top end of the transmission screw (22) extends to the outer side of the top end of the planet carrier (8), and a knob (21) is fixed to one end of the transmission screw (22) located on the outer side of the top end of the planet carrier (8).

4. A worm gear motor with a planetary reduction mechanism according to claim 3, characterized in that: Limit blocks (27) are fixed on both sides of the moving block (23), and the moving block (23) is slidably connected to the planet carrier (8) and the connecting block (10) respectively through the limit blocks (27).

5. The worm gear motor with a planetary reduction mechanism according to claim 1, characterized in that: The transmission shaft (13) is configured to be flat with arc-shaped structures on both sides, and the insertion slot (17) is adapted to the transmission shaft (13).

6. The worm gear motor with a planetary reduction mechanism according to claim 3, characterized in that: The top edge of the connecting hole (11) is arranged to be an arc-shaped chamfer.

7. The worm gear motor with a planetary reduction mechanism according to claim 1, characterized in that: The outer ring of the second bearing (18) is arranged on the inner side of the reduction box (2), and the inner ring of the second bearing (18) is in contact with the outer surface of the support shaft (20).

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