Tobacco product

Abstract

The utility model relates to power motor technical field, especially a kind of secondary cycloid speed reducer and motor, including sun gear set, planetary gear and gear ring group, the axle of sun gear set and the axle of gear ring group are coaxially arranged, planetary cavity is set between the sun gear set and gear ring group, the planetary gear is provided with multiple, multiple the planetary gear is all arranged in planetary cavity, the sun gear set is provided with multiple pinion, the pinion and gear ring group are respectively used to mesh the both sides tooth grooves of planetary gear. The utility model is set further dispersed the load of multiple planetary gears, so that the force that each planetary gear bears is relatively small, reduces the risk of root cutting due to overload. Also improve the carrying capacity and transmission efficiency of speed reducer, ensure the accuracy and stability of transmission, prolong the service life of speed reducer, reduce maintenance cost.

Description

Technical Field

[0001] This utility model relates to the field of power motor technology, and in particular to a cycloidal reducer and motor. Background Technology

[0002] In the field of industrial transmission, traditional speed reducers have many shortcomings in performance and structure. Existing speed reducers perform poorly in terms of transmission stability; the single-tooth or few-tooth meshing method easily leads to uneven force distribution, causing vibration and noise, reducing the service life and working accuracy of the equipment. Moreover, their load-bearing capacity is limited, making it difficult to meet the requirements of some high-load operating conditions.

[0003] Traditionally, to increase the speed ratio, the only solutions are to reduce the number of teeth on the sun gear or decrease the overall module of the reducer. However, reducing the overall module of the reducer results in high root stress on the gears, affecting the reducer's stability. Therefore, reducing the number of teeth on the sun gear is necessary. However, too few teeth on the involute gear can lead to undercutting problems, significantly increasing manufacturing difficulty and cost. Therefore, a new design improvement is needed for the existing reducer structure. Utility Model Content

[0004] To address the aforementioned issues, the multiple planetary gears in this invention further distribute the load, resulting in a relatively smaller force on each planetary gear and reducing the risk of undercutting due to overload. It also improves the reducer's load-bearing capacity and transmission efficiency, ensures transmission accuracy and stability, extends the reducer's service life, and reduces maintenance costs for this cycloidal reducer and motor.

[0005] The technical solution adopted by this utility model is: a subcycloidal reducer, including a sun gear set, planet gears and a gear ring set. The axis of the sun gear set is coaxial with the axis of the gear ring set. A planetary cavity is provided between the sun gear set and the gear ring set. Multiple planet gears are provided, and all of the multiple planet gears are provided in the planetary cavity. Multiple pinions are provided in the sun gear set. The pinions and the gear ring set are respectively used to mesh with the tooth grooves on both sides of the planet gears.

[0006] A further improvement to the above scheme is that the sun gear set is provided with four pinions, which are arranged in a circumferential interval to form a meshing groove, which is used to engage with the gear blocks of the planetary gear.

[0007] A further improvement to the above scheme is that the tooth blocks and tooth grooves are evenly distributed on the outer periphery of the planetary gear.

[0008] A further improvement to the above scheme is that guide surfaces are provided on both sides of the tooth block to guide the pinion towards the tooth groove.

[0009] A further improvement to the above scheme is that two planetary gears are provided, and the two planetary gears are evenly distributed on the planetary cavity.

[0010] A further improvement to the above scheme is that the sun gear set is used to connect to the input device to drive the planetary gears to rotate the gear ring set.

[0011] A further improvement to the above scheme is that the sun gear set is provided with a base plate and a top cover, the pinion is disposed between the base plate and the top cover, and the plurality of pinions are evenly distributed in a circumferential direction.

[0012] A further improvement to the above scheme is that the gear ring assembly includes a fixed ring and gear shafts, and multiple gear shafts are provided. The multiple gear shafts are arranged in a ring on the fixed ring, and an outer ring groove is formed between two adjacent gear shafts. The outer ring groove is used to mesh with the gear blocks of the planetary gear.

[0013] A further improvement to the above scheme is that the fixing ring includes an upper ring body and a lower ring body, a slot is provided between the upper ring body and the lower ring body, and the gear shaft is disposed in the slot.

[0014] An electric motor includes the aforementioned cycloidal reducer, wherein the planetary gears are connected to the output end of the motor.

[0015] The beneficial effects of this utility model are:

[0016] Compared to existing reducers, this invention features a more uniform and stable force transmission because the sun gear set and the ring gear set are coaxial, with a planetary cavity between them to accommodate multiple planetary gears. During transmission, multiple pinions mesh with the ring gear set on both sides of the planetary gear's tooth grooves. This double-sided meshing significantly improves the gear's stress distribution. In traditional gear transmissions, undercutting is common, weakening tooth root strength, reducing gear lifespan, and affecting transmission smoothness and accuracy. In this design, double-sided meshing ensures more reasonable contact between the tooth grooves of each planetary gear and the pinion and ring gear set during movement. The pinion and ring gear set apply forces to the planetary gears simultaneously from both sides, avoiding localized stress concentration caused by excessive force on one side, thus effectively preventing undercutting. The multiple planetary gears further distribute the load, resulting in a relatively smaller force on each planetary gear and reducing the risk of undercutting due to overload. It also improves the load-bearing capacity and transmission efficiency of the reducer, ensures the accuracy and stability of transmission, extends the service life of the reducer, and reduces maintenance costs. In practical applications, it has high practical value and economic benefits.

[0017] Applying the aforementioned reducer to a motor improves performance by transmitting power through the cycloidal reducer during operation. Because this reducer avoids undercutting, the tooth root strength of its gears is guaranteed, allowing it to withstand greater torque. This makes power transmission more stable and reliable when the motor drives a load, reducing malfunctions caused by gear damage or transmission instability, and effectively improving the motor's efficiency and reliability. For example, in industrial production, stable power output is crucial when motors drive large mechanical equipment; the application of this reducer ensures continuous and efficient operation. In terms of energy saving, the transmission efficiency is improved through double-sided meshing and a multi-planetary gear structure to distribute the load. With the same output power, the required input power is reduced due to the reduced transmission losses of the reducer, thus achieving energy savings. For motor equipment operating continuously for extended periods, this significantly reduces energy costs. Regarding space utilization, the cycloidal reducer has a compact structure, and the coaxial arrangement of the sun gear set and the ring gear set minimizes its footprint. Applying it to motors can reduce the size of the entire motor and reducer system, making it easier to install and use in various space-constrained situations, such as some small automated equipment, thus enabling the miniaturization and integration of equipment. Attached Figure Description

[0018] Figure 1 This is a three-dimensional schematic diagram of the secondary cycloidal reducer of this utility model;

[0019] Figure 2 for Figure 1 A three-dimensional schematic diagram of the intermediate cycloidal reducer from another perspective;

[0020] Figure 3 for Figure 1 Front view of the intermediate cycloidal reducer;

[0021] Figure 4 for Figure 3 Enlarged diagram of point A in the diagram;

[0022] Figure 5 for Figure 3 Enlarged diagram of point B in the image.

[0023] Explanation of reference numerals in the attached drawings: Sun gear set 1, pinion 11, meshing groove 12, base plate 13, top cover 14, planetary gear 2, tooth groove 21, tooth block 22, guide surface 221, gear ring set 3, fixed ring 31, upper ring body 311, lower ring body 312, gear shaft 32, planetary cavity 4. Detailed Implementation

[0024] To facilitate understanding of this utility model, a more complete description will be given below with reference to the accompanying drawings. Preferred embodiments of this utility model are shown in the drawings. However, this utility model can be implemented in many different forms and is not limited to the embodiments described herein. Rather, these embodiments are provided to provide a more thorough and complete understanding of the disclosure of this utility model.

[0025] It should be noted that when a component is said to be "fixed to" another component, it can be directly attached to the other component or there may be an intervening component. When a component is said to be "connected to" another component, it can be directly connected to the other component or there may be an intervening component.

[0026] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of the invention. Figures 1-5 As shown, in one embodiment of this utility model, a subcycloidal reducer is disclosed, comprising a sun gear set 1, planetary gears 2, and a ring gear set 3. The axis of the sun gear set 1 is coaxial with the axis of the ring gear set 3. A planetary cavity 4 is provided between the sun gear set 1 and the ring gear set 3. Multiple planetary gears 2 are provided, each disposed within the planetary cavity 4. The sun gear set 1 has multiple pinions 11, which mesh with the ring gear set 3 on both sides of the tooth grooves 21 of the planetary gears 2. Because the axes of the sun gear set 1 and the ring gear set 3 are coaxial, and a planetary cavity 4 is formed between them to accommodate multiple planetary gears 2, the force transmission is more uniform and stable. During transmission, multiple pinions 11 mesh with the ring gear set 3 on both sides of the tooth grooves 21 of the planetary gears 2. This double-sided meshing method greatly improves the force distribution on the gears. In traditional gear transmissions, undercutting is common, which weakens the tooth root strength, reduces the service life of the gears, and affects the smoothness and accuracy of the transmission. In this design, the double-sided meshing ensures a more efficient contact between the tooth grooves 21 of each planetary gear 2 and the pinion 11 and gear ring assembly 3 during operation. The pinion 11 and gear ring assembly 3 apply forces to the planetary gear 2 simultaneously from both sides, avoiding localized stress concentration caused by excessive force on one side, thus effectively preventing undercutting. The arrangement of multiple planetary gears 2 further distributes the load, resulting in a relatively smaller force on each planetary gear 2, reducing the risk of undercutting due to overload. This invention improves the load-bearing capacity and transmission efficiency of the reducer, ensures the accuracy and stability of transmission, extends the service life of the reducer, and reduces maintenance costs.

[0027] The sun gear set 1 has four pinions 11 arranged in a circumferential pattern to form meshing grooves 12, which are used to engage with the gear blocks 22 of the planetary gear 2. Specifically, the gear blocks 22 and the meshing grooves 21 are evenly distributed on the outer periphery of the planetary gear 2. Guide surfaces 221 are provided on both sides of the gear blocks 22 to guide the pinions 11 toward the meshing grooves 21. In this embodiment, the sun gear set 1 has four pinions 11 arranged in a circumferential pattern to form meshing grooves 12 to engage with the gear blocks 22 of the planetary gear 2. This structure greatly optimizes the stability of power transmission. The even distribution of the four pinions 11 allows the planetary gear 2 to mesh with multiple pinions 11 simultaneously during transmission, distributing the torque evenly to each pinion 11. Compared to single-gear transmission, multi-gear meshing reduces the stress on individual gears, lowers the risk of wear and damage caused by excessive local stress, and thus significantly improves the service life of the reducer. The tooth blocks 22 and tooth grooves 21 are evenly distributed around the outer circumference of the planetary gears 2, and guide surfaces 221 are provided on both sides of the tooth blocks 22 to ensure that the pinion 11 accurately and smoothly enters the tooth grooves 21. During the operation of the reducer, the guide surfaces 221 play a guiding role, making the meshing of the pinion 11 and the planetary gears 2 more precise, avoiding vibration and noise caused by inaccurate meshing. This allows the power output of the motor to be transmitted to the load end more accurately, meeting the application scenarios with high transmission accuracy requirements. The effective meshing of multiple pinions 11 with the planetary gears 2 increases the contact area, enabling the reducer to withstand greater torque. In some industrial equipment with high load-bearing capacity requirements, the subcycloidal reducer can better meet the needs and ensure the stable operation of the equipment.

[0028] The sun gear set 1 has four pinions 11 arranged in a circumferential pattern to form meshing grooves 12, which are used to engage with the gear blocks 22 of the planetary gears 2. Specifically, there are two planetary gears 2, which are evenly distributed on the planetary cavity 4. In this embodiment, the engagement of the four pinions 11 with the two planetary gears 2 increases the contact area between the gears. Multiple gears participating in the transmission simultaneously can withstand greater torque, significantly improving the load-bearing capacity of the reducer compared to traditional single-gear or fewer-gear transmission methods. This allows the subcycloidal reducer to be applied in industrial scenarios with high load-bearing requirements, meeting a wider range of power transmission needs. The structural design reduces energy loss during transmission. The reasonable gear layout and uniform force distribution enable power to be transmitted more efficiently from the sun gear set 1 to the planetary gears 2, and then to the ring gear set 3, improving the efficiency of the entire transmission system and reducing the risk of undercut due to overload.

[0029] The sun gear set 1 is used to connect to the input device to drive the planetary gears 2 to rotate the gear ring set 3. In this embodiment, the sun gear set 1 is connected to the input device, enabling it to efficiently receive power from the input device. This direct connection reduces intermediate links in the power transmission process, lowers power loss, and allows power to be transmitted more directly and stably to the planetary gears 2. Driven by the sun gear set 1, the planetary gears 2 begin to rotate, thereby driving the gear ring set 3 to rotate. The entire power transmission process is smooth and efficient, greatly improving the transmission efficiency of the subcycloidal reducer. The coordinated work between the sun gear set 1, planetary gears 2, and gear ring set 3 ensures high transmission accuracy. The sun gear set 1 precisely drives the planetary gears 2, and the planetary gears 2 precisely drive the gear ring set 3; the cooperation between the three is tight and stable.

[0030] The sun gear set 1 is provided with a base plate 13 and a top cover 14. The pinions 11 are disposed between the base plate 13 and the top cover 14, and the pinions 11 are evenly distributed in a circumferential direction. In this embodiment, the base plate 13 and the top cover 14 provide a relatively enclosed space for the pinions 11. This effectively prevents external dust and debris from entering the meshing area of ​​the pinions 11, avoiding problems such as accelerated gear wear and decreased transmission accuracy caused by impurities. Furthermore, it prevents the pinions 11 from being damaged by external forces such as collisions, extending their service life and ensuring the long-term stable operation of the reducer. In terms of stability, the evenly distributed pinions 11, combined with the positioning and support functions of the base plate 13 and the top cover 14, make the structure of the sun gear set 1 more stable. During transmission, the force on each pinion 11 is more even, reducing vibration and noise caused by uneven force distribution.

[0031] The gear ring assembly 3 includes a fixed ring 31 and gear shafts 32. Multiple gear shafts 32 are arranged in a ring on the fixed ring 31, with an outer annular groove formed between adjacent gear shafts 32. This outer annular groove is used to mesh with the gear blocks 22 of the planetary gear 2. Specifically, the fixed ring 31 includes an upper ring body 311 and a lower ring body 312, with a slot between the upper ring body 311 and the lower ring body 312. The gear shafts 32 are disposed within this slot. In this embodiment, from the perspective of transmission stability, the multiple gear shafts 32 arranged in a ring on the fixed ring 31 form an outer annular groove to mesh with the gear blocks 22 of the planetary gear 2. This multi-tooth meshing method greatly enhances the smoothness of the transmission. The simultaneous engagement of multiple gear shafts 32 with the gear blocks 22 of the planetary gear 2 evenly distributes and transmits power, avoiding the force concentration and vibration that may occur during single-tooth meshing. This makes the reducer quieter and more stable during operation, reducing noise and wear caused by vibration, and improving the reliability and service life of the equipment. In terms of structural strength, the retaining ring 31 adopts an upper ring body 311 and a lower ring body 312 with a slot for mounting the gear shaft 32, providing a stable support for the gear shaft 32. The structure enhances the overall strength of the gear ring assembly 3, enabling it to withstand greater torque and pressure. Even under high-load operating conditions, it can ensure the positional accuracy and stability of the gear shaft 32, preventing the gear shaft 32 from deforming under stress and affecting the transmission effect.

[0032] Applying the aforementioned reducer to a motor improves performance by transmitting power through the secondary cycloidal reducer during operation. Because this reducer avoids undercutting, the tooth root strength of its gears is guaranteed, allowing it to withstand greater torque. This makes power transmission more stable and reliable when the motor drives a load, reducing malfunctions caused by gear damage or transmission instability, and effectively improving the motor's efficiency and reliability. For example, in industrial production, stable power output is crucial when motors drive large mechanical equipment; the application of this reducer ensures continuous and efficient operation. In terms of energy saving, the transmission efficiency is improved through double-sided meshing and a multi-planetary gear structure. With the same output power, the required input power is reduced due to the reduced transmission losses of the reducer, thus achieving energy savings. For motor equipment operating continuously for extended periods, this significantly reduces energy costs. Regarding space utilization, the secondary cycloidal reducer has a compact structure; the coaxial arrangement of the sun gear set 1 and the gear ring set 3 minimizes its footprint. Applying it to motors can reduce the size of the entire motor and reducer system, making it easier to install and use in various space-constrained situations, such as some small automated equipment, thus enabling the miniaturization and integration of equipment.

[0033] The above embodiments only illustrate several implementation methods of this utility model, and their descriptions are relatively specific and detailed, but they should not be construed as limiting the scope of this utility model patent. It should be noted that those skilled in the art can make various modifications and improvements without departing from the concept of this utility model, and these all fall within the protection scope of this utility model. Therefore, the protection scope of this utility model patent should be determined by the appended claims.

Claims

1. A cycloidal reducer, characterized in that: It includes a sun gear set, planet gears, and a ring gear set. The axis of the sun gear set is coaxial with the axis of the ring gear set. A planetary cavity is provided between the sun gear set and the ring gear set. Multiple planet gears are provided, and each planet gear is located in a planetary cavity. The sun gear set is provided with multiple pinions. The pinions and the ring gear set are used to mesh with the tooth grooves on both sides of the planet gears.

2. The secondary cycloidal reducer according to claim 1, characterized in that: The sun gear set is provided with four pinions, which are arranged in a circumferential interval to form a meshing groove, which is used to engage with the gear blocks of the planetary gears.

3. The secondary cycloidal reducer according to claim 2, characterized in that: The tooth blocks and tooth grooves are evenly distributed on the outer periphery of the planetary gear.

4. The secondary cycloidal reducer according to claim 3, characterized in that: The tooth block has guide surfaces on both sides to guide the pinion towards the tooth groove.

5. The secondary cycloidal reducer according to any one of claims 1 to 4, characterized in that: The planetary gears are provided in two form, and the two planetary gears are evenly distributed on the planetary cavity.

6. The secondary cycloidal reducer according to claim 5, characterized in that: The sun gear set is used to connect to the input device to drive the planetary gears to rotate the gear ring set.

7. The secondary cycloidal reducer according to claim 1, characterized in that: The sun gear set is provided with a base plate and a top cover, and the pinion is disposed between the base plate and the top cover, with multiple pinions evenly distributed in a circumferential direction.

8. The secondary cycloidal reducer according to claim 1, characterized in that: The gear ring assembly includes a fixed ring and gear shafts. Multiple gear shafts are provided and arranged in a ring on the fixed ring. An outer ring groove is formed between two adjacent gear shafts. The outer ring groove is used to mesh with the gear blocks of the planetary gear.

9. The secondary cycloidal reducer according to claim 8, characterized in that: The fixing ring includes an upper ring body and a lower ring body, and a slot is provided between the upper ring body and the lower ring body. The gear shaft is disposed in the slot.

10. An electric motor, characterized in that: The device includes the cycloidal reducer as described in any one of claims 1 to 9, wherein the planetary gear is connected to the output end of the motor.

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