Planetary gear for gearbox

Abstract

The utility model provides a planetary gear for a gearbox, which relates to the field of planetary gearbox equipment and comprises a shell, the shell comprises a shell and an end cover, a gear set is mounted in an inner cavity of the shell, the shell and the end cover are used for protecting the gear set, and the gear set comprises a gear ring, a sun gear, a planet gear, teeth, an idle gear and a planet carrier. The sun gear and the planet gear are located in an inner cavity of the gear ring, the teeth and the idle gear are located on the surface of the gear ring, the planet carrier is located on the back face of an inner cavity of the shell, and the gear set is used for changing the rotating speed. By arranging the gear ring, the sun gear, the planet gear, the teeth, the idle gear and the planet carrier, the speed reduction effect can be achieved by changing the rotating speed, the speed reduction effect of the planetary gear box can be improved through cooperation of the idle gear and the teeth, noise generated by transmission imbalance of the planetary gear box can be reduced, and the service life of the planetary gear box is prolonged. And the running stability of the planetary gearbox is further improved.

Description

Technical Field

[0001] The utility model belongs to the field of planetary gearbox equipment, in particular to a planetary gear for a gearbox. Background Art

[0002] A gearbox is an important mechanical transmission device used to transmit power and change speed. It consists of a series of gears that mesh with each other to achieve power transmission and speed conversion. Gearboxes are widely used in mechanical equipment in the fields of automobiles, aircraft, ships, industrial machinery, and wind turbines. Planetary gears are a type of reduction gear in gearboxes. They achieve power conversion through the cooperation of sun gears, planetary gears, and planet carriers. They are mostly used in reduction gears.

[0003] According to Chinese patent application number: 202222209619.6, a low-friction planetary gearbox is disclosed, including a driving member, a housing, a reduction assembly and an output member. The reduction assembly includes three planetary gears of identical structure and a sun gear respectively meshed with the three planetary gears. The inner end surface of the output member is equipped with a ball bearing, and the planetary gears are sleeved on the ball bearing; the inner side wall of the housing is provided with a rack, and the three planetary gears are respectively meshed with the rack. The sun gear is installed at the output end of the driving member, and the driving member is detachably connected to the housing;

[0004] The existing technology effectively solves the problem that the friction between the planetary gears and the housing is large when the planetary gear reducer is in use, resulting in a short service life. It has the advantages of less friction between the planetary gears and the housing and a longer service life. However, planetary gears are mostly used for deceleration. Although the deceleration effect can be achieved by cooperating with the sun gear and the planetary gears, the deceleration efficiency is low and the planetary gears are prone to imbalance.

[0005] In summary, the present invention provides a planetary gear for a gearbox to solve the above problems. Utility Model Content

[0006] In order to solve the above technical problems, the present invention provides the following technical solutions:

[0007] A planetary gear for a gearbox includes a housing, the housing including a shell and an end cover, a gear set is installed in the inner cavity of the shell, the shell and the end cover are used to protect the gear set, the gear set includes a ring gear, a sun gear, planetary gears, teeth, an idler gear and a planet carrier, the sun gear and planetary gears are located in the inner cavity of the ring gear, the teeth and idler gear are located on the surface of the ring gear, the planet carrier is located on the back of the inner cavity of the shell, and the gear set is used to change the rotational speed.

[0008] Furthermore, in the present invention, the housing further includes a fuel filling port and an oil drain port, and the fuel filling port is located at the upper end of the housing surface and is movably connected to the housing.

[0009] Furthermore, in the present invention, the oil drain port is located at the lower end of the shell surface and is movably connected to the shell.

[0010] Furthermore, in the present invention, there are three planetary wheels, which are respectively located at the upper end and both sides of the inner cavity of the ring gear and are all engaged with the ring gear. One end of the planetary wheel is movably connected to the planetary carrier through a bearing.

[0011] Furthermore, in the present invention, the sun gear is located at the center of the inner cavity of the ring gear, and the sun gear is meshed with the planetary gears.

[0012] Furthermore, in the present invention, the teeth are fixed to the surface of the gear ring, and the idler wheel is located at the upper end of the inner cavity of the housing and meshes with the teeth.

[0013] Furthermore, in the present invention, an input shaft is provided on the front of the end cover, one end of the input shaft extends to the inner cavity of the shell and is fixedly connected to the sun gear, and an output shaft is provided on the back of the shell, one end of the output shaft extends to the inner cavity of the shell and is fixedly connected to the planetary carrier.

[0014] Beneficial effects: The utility model has the following beneficial effects:

[0015] The utility model provides a housing and an end cover to provide installation and protection for the gear set, thereby preventing the gear set from being affected by external environmental factors and causing wear. By providing a ring gear, a sun gear, a planetary gear, teeth, an idler gear and a planetary carrier, the rotational speed can be changed to achieve deceleration. The cooperation between the idler gear and the teeth not only improves the deceleration effect of the planetary gear box, but also reduces the noise generated by the transmission imbalance of the planetary gear box, thereby improving the stability of the planetary gear box operation. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 This is a schematic diagram of the main structure of the utility model;

[0017] Figure 2 This is a schematic diagram of the structure of the connected state of the gear set of the utility model;

[0018] Figure 3 This is a rear structural diagram of the gear set of the utility model;

[0019] Figure 4 It is a schematic structural diagram of the gear set of the utility model in a separated state.

[0020] In the picture:

[0021] 1. Housing; 101. Casing; 102. End cover; 103. Oil filler port; 104. Oil drain port; 2. Gear set; 201. Ring gear; 202. Sun gear; 203. Planetary gear; 204. Teeth; 205. Idle gear; 206. Planetary carrier; 3. Input shaft; 4. Output shaft. DETAILED DESCRIPTION

[0022] In order to better understand the technical content of the present invention, specific embodiments are given and described as follows in conjunction with the accompanying drawings. Various aspects of the present invention are described in this disclosure with reference to the accompanying drawings, in which many illustrative embodiments are shown. The embodiments of the present disclosure are not necessarily defined to include all aspects of the present invention. It should be understood that the various concepts and embodiments introduced above, as well as those described in more detail below, can be implemented in any of many ways, because the concepts and embodiments disclosed in the present invention are not limited to any implementation method. In addition, some aspects disclosed in the present invention can be used alone or in any appropriate combination with other aspects disclosed in the present invention.

[0023] Example 1

[0024] like Figure 1-4 As shown, it is the first embodiment of the present invention, which provides a planetary gear for a gearbox, including a housing 1. The housing 1 includes a shell 101 and an end cover 102. A gear set 2 is installed in the inner cavity of the shell 101. The shell 101 and the end cover 102 are used to protect the gear set 2. The gear set 2 includes a ring gear 201, a sun gear 202, planetary gears 203, teeth 204, an idler gear 205 and a planet carrier 206. The sun gear 202 and the planetary gears 203 are located in the inner cavity of the ring gear 201, the teeth 204 and the idler gear 205 are located on the surface of the ring gear 201, and the planet carrier 206 is located on the back of the inner cavity of the shell 101. The gear set 2 is used to change the speed.

[0025] like Figure 1-4 As shown, the housing 101 and the end cover 102 are used to provide installation and protection space for the gear set 2 to prevent the gear set 2 from being affected by external environmental factors and causing wear that affects its service life. When the sun gear 202 rotates, it drives the planetary gears 203 to rotate along the inner cavity of the ring gear 201. The planetary carrier 206 provides support for the planetary gears 203 so that the planetary gears 203 can move at the same time. When the planetary gears 203 rotate, they drive the ring gear 201 to rotate. When the ring gear 201 rotates, it drives the idler gear 205 to rotate through the teeth 204. The idler gear 205 can increase the deceleration while reducing the noise generation, so that it maintains stable operation. The idler gear 205 can also be driven to move by an external motor, so that the idler gear 205 drives the ring gear 201 to move through the teeth 204, thereby realizing reverse transmission of power, effectively improving the flexibility of the planetary gearbox.

[0026] Example 2

[0027] Reference Figure 1-4 , which is the second embodiment of the present utility model, and this embodiment is based on the previous embodiment.

[0028] In this embodiment, the housing 1 further includes a fuel filling port 103 and an oil drain port 104 . The fuel filling port 103 is located at the upper end of the surface of the housing 101 and is movably connected to the housing 101 .

[0029] The oil drain port 104 is located at the lower end of the surface of the housing 101 and is movably connected to the housing 101 .

[0030] There are three planetary gears 203 , which are respectively located at the upper end and both sides of the inner cavity of the ring gear 201 and are all meshed with the ring gear 201 . One end of the planetary gear 203 is movably connected to the planet carrier 206 through a bearing.

[0031] The sun gear 202 is located at the center of the inner cavity of the ring gear 201 , and is meshed with the planetary gears 203 .

[0032] The teeth 204 are fixed to the surface of the ring gear 201 , and the idler gear 205 is located at the upper end of the inner cavity of the housing 101 and meshes with the teeth 204 .

[0033] An input shaft 3 is provided on the front of the end cover 102, one end of which extends to the inner cavity of the shell 101 and is fixedly connected to the sun gear 202. An output shaft 4 is provided on the back of the shell 101, one end of which extends to the inner cavity of the shell 101 and is fixedly connected to the planetary carrier 206.

[0034] like Figure 1-4 As shown, the input shaft 3 and the output shaft 4 are used for power input and output respectively. The power is changed through the gear set 2 and transmitted again through the output shaft 4. Lubricating oil can be added to the inner cavity of the housing 101 through the oil filling port 103 to reduce the friction of the gear set 2. The lubricating oil can be easily replaced through the oil drain port 104, so that the gear set 2 can maintain stable operation. The total number of teeth of the planetary gear 203 and the idler gear 205 is equal to the number of teeth of the ring gear 201.

[0035] When in use, the housing 101 and the end cover 102 are used to provide installation and protection space for the gear set 2 to prevent the gear set 2 from being affected by external environmental factors and causing wear that affects its service life. When the sun gear 202 rotates, it drives the planetary gears 203 to rotate along the inner cavity of the ring gear 201. The planet carrier 206 provides support for the planetary gears 203, allowing the planetary gears 203 to move simultaneously. When the planetary gears 203 rotate, they drive the ring gear 201 to rotate. When the ring gear 201 rotates, it drives the idler gear 205 to rotate through the teeth 204. The idler gear 205 can increase the deceleration while reducing the noise generation, so that it maintains stable operation. The idler gear 205 can also be driven by an external motor to move, so that the idler gear 205 drives the ring gear 201 to move through the teeth 204, thereby realizing reverse power transmission, effectively improving the flexibility of the planetary gearbox. The cooperation between the idler gear 205 and the teeth 204 can not only improve the deceleration effect of the planetary gearbox, but also reduce the noise generated by the transmission imbalance of the planetary gearbox, thereby improving the stability of the planetary gearbox operation.

[0036] The standard parts used in this application document can all be purchased from the market, and can be customized according to the description in the specification and drawings. The specific connection methods of each part adopt conventional means such as mature bolts, rivets, welding, etc. in the existing technology. The machinery, parts and equipment all adopt conventional models in the existing technology. The control method is automatic control through a controller. The control circuit of the controller can be implemented by simple programming by technicians in this field, which is common knowledge in this field. In addition, this application is mainly used to protect mechanical devices, so this application no longer explains the control method and circuit connection in detail.

[0037] While the present invention has been described above with reference to preferred embodiments, this is not intended to limit the present invention. Persons skilled in the art will readily appreciate that various modifications and variations may be made without departing from the spirit and scope of the present invention. Therefore, the scope of protection of the present invention shall be determined by the claims.

Claims

1. A planetary gear for a gearbox, comprising a housing (1), characterized in that: The housing (1) comprises a shell (101) and an end cover (102); a gear set (2) is installed in the inner cavity of the shell (101); the shell (101) and the end cover (102) are used to protect the gear set (2); the gear set (2) comprises a ring gear (201), a sun gear (202), planetary gears (203), teeth (204), an idler gear (205) and a planet carrier (206); the sun gear (202) and the planetary gears (203) are located in the inner cavity of the ring gear (201); the teeth (204) and the idler gear (205) are located on the surface of the ring gear (201); the planet carrier (206) is located on the back of the inner cavity of the shell (101); and the gear set (2) is used to change the rotation speed.

2. The planetary gear for a gearbox according to claim 1, wherein: The housing (1) further comprises a fuel filling port (103) and an oil drain port (104); the fuel filling port (103) is located at the upper end of the surface of the housing (101) and is movably connected to the housing (101).

3. The planetary gear for a gearbox according to claim 2, wherein: The oil discharge port (104) is located at the lower end of the surface of the housing (101) and is movably connected to the housing (101).

4. The planetary gear for a gearbox according to claim 1, wherein: There are three planetary wheels (203), which are respectively located at the upper end and both sides of the inner cavity of the gear ring (201) and are all meshed with the gear ring (201). One end of the planetary wheel (203) is movably connected to the planet carrier (206) through a bearing.

5. The planetary gear for a gearbox according to claim 1, wherein: The sun gear (202) is located at the center of the inner cavity of the gear ring (201), and the sun gear (202) is meshed with the planetary gears (203).

6. The planetary gear for a gearbox according to claim 1, wherein: The teeth (204) are fixed to the surface of the gear ring (201), and the idler wheel (205) is located at the upper end of the inner cavity of the housing (101) and meshes with the teeth (204).

7. The planetary gear for a gearbox according to claim 1, wherein: An input shaft (3) is provided on the front of the end cover (102), one end of the input shaft (3) extends to the inner cavity of the housing (101) and is fixedly connected to the sun gear (202), and an output shaft (4) is provided on the back of the housing (101), one end of the output shaft (4) extends to the inner cavity of the housing (101) and is fixedly connected to the planet carrier (206).

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