Novel planetary differential speed reducer

Abstract

The utility model belongs to the technical field of speed reducers, and discloses a novel planetary differential speed reducer which comprises an outer protective cover, a power input shaft, a power gear, a transmission shaft, a transmission shaft and a transmission shaft, the upper side of the outer protective cover is in an opening shape, the power input shaft is arranged below the outer protective cover, and the upper end of the power input shaft penetrates through the outer protective cover and extends to the inner side of the outer protective cover. The power gear is fixedly installed on the power input shaft, and the rotating plate is arranged above the power gear. According to the novel planetary differential speed reducer, power is input through a power input shaft, a power gear drives a rotating plate to rotate through interaction of a transmission gear and inner transmission teeth, and the rotating plate is in transmission with the power gear through the inner transmission teeth on the inner side and the transmission gear. The rotation direction of the driven gear is opposite to that of the rotation plate, and the linear rate of the driven gear is different from that of the rotation plate, so that when the planetary gear rotates, the whole planetary gear slowly rotates around the power input shaft, and the effect of enhancing the speed reduction effect is achieved. Meanwhile, the device has the advantages of being compact in structure, small in size, light in weight, simple in construction and high in speed reduction multiplying power.

Description

Technical Field

[0001] The utility model belongs to the technical field of speed reducers, in particular to a novel planetary differential speed reducer. Background Art

[0002] A reducer is an independent component consisting of a gear drive, worm drive, or gear-worm drive enclosed in a rigid housing. It is often used as a reduction transmission device between the prime mover and the working machine.

[0003] In the prior art, reducers mostly use multi-stage gear reduction, which leads to a complex structure and easily causes the reducer to be bulky, heavy, inconvenient to install, and difficult to provide an extremely high transmission ratio. Therefore, a new planetary differential reducer is provided. Utility Model Content

[0004] The purpose of the utility model is to provide a novel planetary differential reducer to solve the problems raised in the above background technology.

[0005] In order to achieve the above-mentioned purpose, the utility model provides the following technical solutions: a new type of planetary differential reducer, comprising:

[0006] An external shield, the upper side of which is open;

[0007] A power input shaft is disposed below the outer shield, and an upper end of the power input shaft penetrates through the outer shield and extends to the inner side thereof;

[0008] A power gear, fixedly mounted on the power input shaft;

[0009] A rotating plate is arranged above the power gear, and placement grooves are provided on both upper and lower sides of the rotating plate, and inner transmission teeth are provided inside the placement grooves, and the power gear is located in the placement grooves on the lower side of the rotating plate;

[0010] A pair of transmission gears, located in the placement groove on the lower side of the rotating plate, and symmetrically arranged on both sides of the power gear;

[0011] A driven gear is fixedly mounted on the upper end of the power input shaft, and the driven gear is located above the rotating plate;

[0012] A baffle plate is fixedly mounted on the upper side of the driven gear, and a planet carrier is arranged above the baffle plate;

[0013] Three planetary gears are arranged between the placement groove on the upper side of the rotating plate and the planetary carrier.

[0014] Preferably, the lower side wall of each transmission gear is rotatably connected to the lower inner wall of the outer shield, the power gear is meshingly connected to the transmission gear, and each transmission gear is meshingly connected to the internal transmission gear.

[0015] Preferably, the size of the driven gear is different from the size of the power gear.

[0016] Preferably, the upper side end of the planetary gear is rotatably connected to the lower surface of the planetary carrier, the planetary gear is meshed with the internal transmission teeth, and the driven gear is meshed with the planetary gear.

[0017] Preferably, the baffle is located above the planetary gear, and the baffle is located below the planetary carrier.

[0018] The beneficial effects of the utility model are as follows:

[0019] The utility model provides a novel planetary differential reducer, in which power is input by a power input shaft, the power gear has the same angular velocity as the power input shaft, the power gear drives a rotating plate to rotate through the interaction of a transmission gear and an internal transmission tooth, and the rotation direction of the rotating plate is the same as that of the transmission gear, and the rotation direction of the rotating plate is opposite to that of the power input shaft, the rotating plate is transmitted to the power gear through the inner internal transmission teeth and the transmission gear, so the rotating plate and the power gear can rotate synchronously, the driven gear has the opposite rotation direction to the rotating plate, and the linear velocity of the driven gear is different from that of the rotating plate, resulting in that when the planetary gear rotates, the whole rotates slowly around the power input shaft, thereby enhancing the deceleration effect, and at the same time, the device has the characteristics of compact structure, small size, light weight, simple construction and high deceleration ratio. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0021] Figure 2 This is a schematic diagram of the three-dimensional structure of the utility model from another angle;

[0022] Figure 3 It is a cross-sectional three-dimensional structural schematic diagram of the utility model;

[0023] Figure 4 It is an explosion diagram of the utility model;

[0024] Figure 5 It is a schematic diagram of an explosion from another angle of the present invention.

[0025] In the figure: 1. External shield; 2. Transmission gear; 3. Power input shaft; 4. Power gear; 5. Rotating plate; 6. Placement groove; 7. Internal transmission teeth; 8. Baffle; 9. Driven gear; 10. Planetary carrier; 11. Planetary gear. DETAILED DESCRIPTION

[0026] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0027] like Figures 1 to 5 As shown, the embodiment of the utility model provides a new type of planetary differential reducer, including: an external shield 1, the upper side of the external shield 1 is open, a power input shaft 3, which is arranged below the external shield 1, and the upper end of the power input shaft 3 passes through the external shield 1 and extends to the inner side thereof, a power gear 4, which is fixedly mounted on the power input shaft 3, a rotating plate 5, which is arranged above the power gear 4, and a placement groove 6 is provided on the upper and lower sides of the rotating plate 5, and an internal transmission tooth 7 is provided on the inner side of the placement groove 6, the power gear 4 is located in the placement groove 6 on the lower side of the rotating plate 5, a pair of transmission gears 2 are located in the placement groove 6 on the lower side of the rotating plate 5, and are symmetrically arranged on both sides of the power gear 4, a driven gear 9, which is fixedly mounted on the upper end of the power input shaft 3, and the driven gear 9 is located above the rotating plate 5, a baffle 8, which is fixedly mounted on the upper side of the driven gear 9, and a planet carrier 10 is provided above the baffle 8, and three planetary gears 11 are arranged between the placement groove 6 on the upper side of the rotating plate 5 and the planet carrier 10.

[0028] The working principle and beneficial effects of the above technical scheme are as follows: the power in the device is input by the power input shaft 3, the power gear 4 has the same angular velocity as the power input shaft 3, the power gear 4 drives the rotating plate 5 to rotate through the transmission gear 2 and the interaction of the internal transmission teeth 7, and the rotation direction of the rotating plate 5 is the same as the rotation direction of the transmission gear 2, and the rotation direction of the rotating plate 5 is opposite to the rotation direction of the power input shaft 3, the rotating plate 5 is transmitted to the power gear 4 through the inner internal transmission teeth 7 and the transmission gear 2, so the rotating plate 5 and the power gear 4 rotate in opposite directions, the driven gear 9 and the rotating plate 5 rotate in opposite directions, and the linear velocity of the driven gear 9 is different from that of the rotating plate 5, resulting in that while the planetary gear 11 rotates, the whole rotates slowly around the power input shaft 3, thereby enhancing the deceleration effect. The device has the characteristics of compact structure, small size, light weight, simple structure and high deceleration ratio.

[0029] In one embodiment: the lower side wall of each transmission gear 2 is rotatably connected to the lower inner wall of the external shield 1 , the power gear 4 is meshedly connected to the transmission gear 2 , and each transmission gear 2 is meshedly connected to the internal transmission gear 7 .

[0030] The working principle and beneficial effects of the above technical solution are: the power gear 4 rotates to drive the transmission gear 2 to rotate in the opposite direction, the transmission gear 2 rotates to rotate the internal transmission teeth 7, and the rotation direction of the transmission gear 2 is the same as the rotation direction of the internal transmission teeth 7.

[0031] In one embodiment, the size of the driven gear 9 is different from the size of the power gear 4 .

[0032] The working principle and beneficial effect of the above technical solution are: differential transmission is achieved by setting the driven gear 9 and the power gear 4 to different sizes.

[0033] In one embodiment, the upper side end of the planetary gear 11 is rotatably connected to the lower surface of the planetary carrier 10 , the planetary gear 11 is meshed with the internal transmission teeth 7 , and the driven gear 9 is meshed with the planetary gear 11 .

[0034] The working principle and beneficial effects of the above technical solution are as follows: since the rotation directions of the internal transmission tooth 7 and the driven gear 9 are opposite and their angular velocities are inconsistent, the planetary gear 11 can rotate at a slower speed, thereby driving the planetary carrier 10 to rotate and realizing differential transmission.

[0035] In a specific embodiment, the baffle plate 8 is located above the planetary gear 11 , and the baffle plate 8 is located below the planetary carrier 10 .

[0036] The working principle and beneficial effect of the above technical solution are: by arranging the baffle 8 between the planetary gear 11 and the planetary carrier 10, it is possible to prevent the planetary gear 11 and the planetary carrier 10 from being separated from the rotating plate 5 without restricting their rotation, thereby improving the stability of the device.

[0037] Working principle and usage process:

[0038] The power in the device is input by the power input shaft 3, the power gear 4 has the same angular velocity as the power input shaft 3, the power gear 4 drives the rotating plate 5 to rotate through the transmission gear 2 and the interaction of the internal transmission teeth 7, and the rotation direction of the rotating plate 5 is the same as the rotation direction of the transmission gear 2, and the rotation direction of the rotating plate 5 is opposite to the rotation direction of the power input shaft 3. The rotating plate 5 is transmitted to the power gear 4 through the inner internal transmission teeth 7 and the transmission gear 2, so the rotating plate 5 and the power gear 4 rotate in opposite directions, the driven gear 9 and the rotating plate 5 rotate in opposite directions, and the linear velocity of the driven gear 9 is different from that of the rotating plate 5, resulting in that while the planetary gear 11 rotates, the whole rotates slowly around the power input shaft 3, thereby enhancing the deceleration effect. The device has the characteristics of compact structure, small size, light weight, simple structure and high deceleration ratio.

[0039] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0040] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A new type of planetary differential reducer, characterized in that: include: An external shield (1), the upper side of the external shield (1) being open; A power input shaft (3) is arranged below the outer shield (1), and the upper end of the power input shaft (3) passes through the outer shield (1) and extends to the inner side thereof; A power gear (4) is fixedly mounted on the power input shaft (3); A rotating plate (5) is arranged above the power gear (4), and a placement groove (6) is provided on both the upper and lower sides of the rotating plate (5), and an inner transmission tooth (7) is provided inside the placement groove (6), and the power gear (4) is located in the placement groove (6) on the lower side of the rotating plate (5); A pair of transmission gears (2) are located in the placement groove (6) on the lower side of the rotating plate (5) and are symmetrically arranged on both sides of the power gear (4); A driven gear (9) is fixedly mounted on the upper end of the power input shaft (3), and the driven gear (9) is located above the rotating plate (5); A baffle (8) is fixedly mounted on the upper side of the driven gear (9), and a planet carrier (10) is arranged above the baffle (8); Three planetary gears (11) are arranged between the placement groove (6) on the upper side of the rotating plate (5) and the planetary carrier (10).

2. A novel planetary differential reducer according to claim 1, characterized in that: The lower side wall of each transmission gear (2) is rotatably connected to the lower inner wall of the external shield (1), the power gear (4) is meshingly connected to the transmission gear (2), and each transmission gear (2) is meshingly connected to the internal transmission gear (7).

3. A novel planetary differential reducer according to claim 1, characterized in that: The size of the driven gear (9) is different from the size of the power gear (4).

4. A novel planetary differential reducer according to claim 1, characterized in that: The upper side end of the planetary gear (11) is rotatably connected to the lower surface of the planetary carrier (10), the planetary gear (11) is meshed with the internal transmission teeth (7), and the driven gear (9) is meshed with the planetary gear (11).

5. A novel planetary differential reducer according to claim 1, characterized in that: The baffle plate (8) is located above the planetary gear (11), and the baffle plate (8) is located below the planetary carrier (10).

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