阅读说明：本技术 一种磁力换向传动装置 (Magnetic reversing transmission device ) 是由 姬鹏 刘佳鹭 李学敏 张涛 张孟博 于 2020-05-06 设计创作，主要内容包括：本发明公开了一种磁力换向传动装置,它应用于机械传动领域,其包括中心轴重合的输入轴、输出轴和设置在所述输入轴与输出轴之间的行星轮系机构,所述行星轮系机构包括太阳轮、行星齿轮组和齿圈,所述行星齿轮组包括安装在行星齿轮轴上的三组行星轮对,所述行星齿轮轴固定在行星架上,所述输出轴固定设置在行星架的中心轴处,所述太阳轮固定设置在输入轴的末端,所述输入轴设置在机壳的中心轴处,同轴设置的机壳、齿圈和行星架上设有滑动的磁环；本发明采用机械与磁力耦合传动,结构简单,所需零部件少,更换简单方便,具有较低的维护成本,且维修、维护程序简单,通过磁环的滑动能顺利实现换向、传递动力和离合的功能。(The invention discloses a magnetic reversing transmission device, which is applied to the field of mechanical transmission and comprises an input shaft, an output shaft and a planetary gear train mechanism, wherein the input shaft and the output shaft are overlapped by central shafts, the planetary gear train mechanism is arranged between the input shaft and the output shaft and comprises a sun gear, a planetary gear set and a gear ring, the planetary gear set comprises three groups of planetary gear pairs arranged on a planetary gear shaft, the planetary gear shaft is fixed on a planet carrier, the output shaft is fixedly arranged at the central shaft of the planet carrier, the sun gear is fixedly arranged at the tail end of the input shaft, the input shaft is arranged at the central shaft of a machine shell, and a sliding magnetic ring is arranged on the machine shell, the gear ring and the; the invention adopts mechanical and magnetic coupling transmission, has simple structure, less required parts, simple and convenient replacement, lower maintenance cost and simple maintenance and maintenance procedures, and can smoothly realize the functions of reversing, power transmission and clutching through the sliding of the magnetic ring.)

1. A magnetic reversing transmission device is characterized in that: comprises an input shaft (8) with a coincident central axis, an output shaft (9) and a planetary gear train mechanism arranged between the input shaft (8) and the output shaft (9),

the planetary gear train mechanism comprises a sun gear (3), a planetary gear set (4) and a gear ring (5), the sun gear (3) is externally engaged with the planetary gear set (4), the planetary gear set (4) is internally engaged with the gear ring (5), the output shaft (9) is fixedly arranged at the central shaft of the planet carrier (6),

the sun gear (3) is fixedly arranged at the tail end of the input shaft (8), the input shaft (8) is arranged at the central shaft of the casing (1), and the casing (1), the gear ring (5) and the planet carrier (6) which are coaxially arranged are provided with the sliding magnetic ring (2).

2. A magnetically commutated transmission as defined in claim 1, wherein: planetary gear set (4) constitute for three groups of planet wheel teams (12), and every group planet wheel team (12) includes two outer engaged internal gear (15) and external gear (14), internal gear (15) and sun gear (3) meshing, external gear (14) and ring gear (5) meshing.

3. A magnetically commutated transmission as defined in claim 2, wherein: the planetary gear sets (4) are arranged on the planetary gear shafts (13), and the planetary gear shafts (13) are fixedly arranged on the planet carrier (6) and are uniformly distributed in the circumferential direction.

4. A magnetically commutated transmission as defined in claim 1, wherein: the outer diameters of the machine shell (1), the gear ring (5) and the planet carrier (6) are the same.

5. A magnetically commutated transmission according to claim 4, wherein: the machine shell (1), the gear ring (5) and the planet carrier (6) are all made of magnetic materials.

6. A magnetically commutated transmission according to claim 5, wherein: the machine shell (1) is connected with the input shaft (8) through a first bearing (10), and the planet carrier (6) is connected with the support (7) through a second bearing (11).

7. The magnetically commutated transmission of any of claims 1-6, wherein: the sun gear (3), the planetary gear set (4) and the gear ring (5) are all helical gears.

Technical Field

The invention relates to the field of mechanical transmission, in particular to a magnetic reversing transmission device.

Background

The traditional transmission device mostly realizes transmission through a gear system, and reversing is generally realized by using an idler gear in the gear transmission system. In a traditional gearbox, reversing transmission is generally realized through an input shaft, an intermediate shaft and an output shaft, an idle wheel is arranged between the intermediate shaft and the output shaft, and the purpose of reversing is achieved by controlling the idle wheel to be meshed with gears on the intermediate shaft and the output shaft.

The existing scheme can realize the functions of reverse gear and reversing, but has complex structure and more parts, and needs to be provided with a more complex reverse gear control mechanism and a corresponding control system, thus leading to increased cost, reduced reliability and high maintenance cost.

Disclosure of Invention

Therefore, a magnetic reversing transmission device is developed, a mechanical and magnetic coupling transmission mode is adopted, the gear shifting and reversing mode is simple and convenient, the structure is simplified, the work is safe and reliable, and the manufacturing cost is low.

In order to solve the technical problems, the technical scheme adopted by the invention is as follows:

the planetary gear train mechanism comprises an input shaft, an output shaft and a planetary gear train mechanism, wherein the central shafts of the input shaft and the output shaft are overlapped, the planetary gear train mechanism is arranged between the input shaft and the output shaft and comprises a sun gear, a planetary gear set and a gear ring, the sun gear is externally engaged with the planetary gear set, the planetary gear set is internally engaged with the gear ring, the output shaft is fixedly arranged at the central shaft of a planet carrier, the sun gear is fixedly arranged at the tail end of the input shaft, the input shaft is arranged at the central shaft of a machine shell, and sliding magnetic rings are arranged on the machine shell, the gear ring and the.

The invention is further improved in that: the planetary gear set is composed of three planetary gear trains, each planetary gear train comprises two externally meshed inner gears and an outer gear, the inner gears are meshed with the sun gear, and the outer gears are meshed with the gear ring.

The invention is further improved in that: the planetary gear sets are arranged on planetary gear shafts, and the planetary gear shafts are fixedly arranged on the planet carrier and are uniformly distributed in the circumferential direction.

The invention is further improved in that: the outer diameters of the shell, the gear ring and the planet carrier are the same.

The invention is further improved in that: the shell, the gear ring and the planet carrier are made of magnetic materials.

The invention is further improved in that: the shell is connected with the input shaft through a first bearing, and the planet carrier is connected with the support through a second bearing.

The invention is further improved in that: the sun gear, the planetary gear set and the gear ring are all bevel gears.

Due to the adoption of the technical scheme, the invention has the beneficial effects that:

the invention adopts mechanical and magnetic coupling transmission, has simple structure, less required parts, simple and convenient replacement, low maintenance cost and simple maintenance and maintenance procedures. The functions of reversing, power transmission and clutch can be smoothly realized through the sliding of the magnetic ring, a sliding gear is not needed in the working process, the friction and the abrasion are small, and the service life is effectively prolonged.

In addition to the individual gears of the planetary gear set of the present invention being able to rotate about the planet pins as fixed axis gears, they also cause the planet pins to rotate about the sun gear. The rotation of the planetary gear set around the planetary gear shaft is called "autorotation", and the rotation around the sun gear is called "revolution".

When the magnetic ring slides between the shell and the gear ring, the gear ring and the shell are magnetized by the magnetic ring, the gear ring and the shell are fixed into a whole under the action of magnetic force, the input shaft transmits power to the planet carrier through the sun gear and the planetary gear set, the gear ring is fixed, three groups of planetary gear sets are respectively meshed together, two inner gears and two outer gears which form the planetary gear sets respectively rotate, and simultaneously the planetary gear shafts are driven to rotate around the sun gear in an anticlockwise mode as a whole, so that the planet carrier is driven to rotate in the opposite direction of the input shaft, and at the moment, the output shaft and the input shaft rotate in the opposite direction; when the magnetic ring is arranged between the gear ring and the planet carrier, the gear ring and the planet carrier are magnetized by the magnetic ring, the gear ring and the planet carrier are fixed into a whole under the action of magnetic force, and at the moment, the planetary gear set, the gear ring and the planet carrier rotate synchronously. The input shaft transmits power to the gear ring and the planet carrier through the sun gear and the planetary gear set, the planet carrier is subjected to torque with the same direction as the input shaft due to the fact that the gear ring and the planet carrier are fixed, and the output shaft and the input shaft rotate in the same direction to play a role in transmitting power; when the magnetic ring is located at other positions, the gear ring is not fixed with any part, the input shaft transmits power to the gear ring and the planet carrier through the sun gear and the planetary gear set, the output shaft bears the load and cannot rotate, the power is completely used for driving the gear ring to rotate, and the gear ring is in an idle running state at the moment, so that the transmission clutch function can be realized.

Drawings

FIG. 1 is a schematic diagram of a split state architecture of the present invention;

FIG. 2 is a schematic diagram of the magnetic ring position structure in the reversing process of the present invention;

FIG. 3 is a schematic view of the magnetic ring position structure in the power transmission process of the present invention.

Wherein, 1, a shell; 2. magnetic ring: 3. a sun gear 4, a planetary gear set 5 and a gear ring; 6. a planet carrier; 7. a support; 8. an input shaft; 9. an output shaft; 10. a first bearing; 11. a second bearing; 12. a pair of planet wheels; 13. a planetary gear shaft; 14. an outer gear; 15. an internal gear.

Detailed Description

The present invention will be described in further detail with reference to the following examples:

a magnetic reversing transmission device is shown in figures 1-3 and comprises an input shaft 8, an output shaft 9 and a planetary gear train mechanism, wherein the central axes of the input shaft 8 and the output shaft 9 are overlapped, the planetary gear train mechanism is arranged between the input shaft 8 and the output shaft 9, and the input shaft 8 completes the reversing and power transmission functions of the output shaft 9 through the planetary gear train mechanism.

As shown in fig. 1, the planetary gear train mechanism includes a sun gear 3, a planetary gear set 4, and a ring gear 5, the sun gear 3 externally meshing with the planetary gear set 4, the planetary gear set 4 internally meshing with the ring gear 5, the planetary gear set 4 being mounted on a carrier 6 via a pinion shaft 13.

The sun gear 3 is positioned at the center of the planetary gear train mechanism, the planetary gear sets 4 are arranged on planetary gear shafts 13, and the planetary gear shafts 13 are fixedly arranged on the planet carrier 6 and are uniformly distributed in the circumferential direction.

The planetary gear set 4 is composed of three planetary gear sets 12, each planetary gear set 12 comprises two external meshed inner gears 15 and outer gears 14, the inner gears 15 and the outer gears 14 are mounted on the planetary gear shaft 13, the rotating directions of the inner gears 15 and the outer gears 14 are opposite, the inner gears 15 are in constant mesh with the sun gear 3, and the outer gears 14 are in constant mesh with the gear ring 5. The internal gear 15 and the external gear 14 constituting the planetary wheel pair 12 rotate around the central axis of the sun gear 3 by the drive of the planetary gear shafts 13 on the carrier 6, in addition to the rotation around the planetary gear shafts 13 on the carrier 6, like the rotation of the earth and the revolution around the sun. The ring gear 5 is in constant mesh with the outer gear 14 of the planetary gear set 4, and the rotational direction therebetween is the same. The sun gear 3, the planetary gear set 4 and the gear ring 5 are always in a meshed state, and in order to improve the working stability, the sun gear 3, the planetary gear set 4 and the gear ring 5 can be set to be helical gears.

The sun gear 3 is fixedly arranged at the tail end of the input shaft 8, the input shaft 8 is connected with the sun gear 3 through interference fit, the input shaft 8 is arranged at the center shaft of the casing 1, the casing 1 is connected with the input shaft 8 through the first bearing 10, the outer diameters of the casing 1, the gear ring 5 and the planet carrier 6 which are coaxially arranged are the same, the casing 1, the gear ring 5 and the planet carrier 6 are provided with the sliding magnetic ring 2, the output shaft 9 is fixedly arranged at the center shaft of the planet carrier 6, the planet carrier 6 is connected with the output shaft 9 through interference fit, the planet carrier 6 is connected with the support 7 through the second bearing 11, and the casing 1, the gear ring 5 and the support 7 are all arranged on the rack.

The central axes of the input shaft 8, the output shaft 9, the sun gear 3, the magnetic ring 2, the gear ring 5, the planet carrier 6 and the support 7 are all coincided. The machine shell 1, the gear ring 5 and the planet carrier 6 are all made of magnetic materials. The magnetic ring 2 respectively realizes the fixation of the gear ring 5 and the casing 1 and the fixation of the gear ring 5 and the planet carrier 6 through magnetic force in the processes of the casing 1, the gear ring 5 and the planet carrier 6, the sliding between the casing 1 and the gear ring 5 and the sliding between the gear ring 5 and the planet carrier 6.

As shown in fig. 2, when the magnetic ring 2 slides to a position between the casing 1 and the gear ring 5, the gear ring 5 and the casing 1 are magnetized, and the gear ring 5 is fixed to the casing 1 by magnetic force, that is, the gear ring 5 is fixed. At this moment, the input shaft 8 transmits power to the output shaft 9 through the sun gear 3, the planetary gear set 4 and the planet carrier 6, and the gear ring 5 is fixed, so that the planetary gear set 4 adopts three groups of planetary gear trains 12 which are uniformly distributed and form a Y-shaped structure, the stress is balanced in the transmission process, and the stability and the reliability of transmission are ensured. The two externally meshed inner gears 15 and outer gears 14 forming each set of the planetary gear set 12 realize the change of the transmission state through two-time meshing transmission.

The three sets of planetary wheel pairs 12 are all installed on a planetary gear shaft 13 fixedly arranged on the planet carrier 6 and are uniformly distributed in the circumferential direction, the gear ring 5 is fixed, the three sets of planetary wheel pairs 12 are respectively meshed together, an inner gear 15 and an outer gear 14 which form the planetary wheel pairs 12 respectively rotate, and meanwhile, the planetary gear shaft 13 is driven to rotate anticlockwise around the sun gear 3 as a whole, so that the planet carrier 6 is driven to realize torque opposite to the steering of the input shaft 8, at the moment, the output shaft 9 and the input shaft 8 rotate in the opposite directions, and the reversing is realized.

As shown in fig. 3, when the magnet ring 2 slides to a position between the ring gear 5 and the planet carrier 6, the ring gear 5 and the planet carrier 6 are magnetized, the ring gear 5 and the planet carrier 6 are fixed into a whole through the action of magnetic force, three sets of planetary wheel pairs 12 meshed together rotate around the sun gear 3, and at the moment, the planetary gear set 4, the ring gear 5 and the planet carrier 6 synchronously rotate. The input shaft 8 transmits power to the gear ring 5 and the planet carrier 6 through the sun gear 3 and the planetary gear set 4, the planet carrier 6 receives torque which is the same as the rotation direction of the input shaft 8 due to the fact that the gear ring 5 and the planet carrier 6 are fixed, and the output shaft 9 connected with the planet carrier 6 rotates in the same direction as the input shaft 8, and power transmission is achieved.

When the magnetic ring 2 is positioned between the casing 1 and the gear ring 5 and at other positions except between the gear ring 5 and the planet carrier 6, the gear ring 5 is not fixed with any part, at this time, the input shaft 8 transmits power to the gear ring 5 and the planet carrier 6 through the sun gear 3 and the planetary gear set 4, the power is completely used for driving the gear ring 5 to rotate because the output shaft 9 bears the load and cannot rotate, and at this time, the gear ring 5 is in an idle running state, so that the transmission clutch function can be realized.

Finally, it should be noted that: the above examples are only intended to illustrate the technical solution of the present invention, but not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.