CN217234345U

CN217234345U - Accurate miniature seal structure for planetary gear box

Info

Publication number: CN217234345U
Application number: CN202220939702.6U
Authority: CN
Inventors: 王亚东; 孙维
Original assignee: Nanjing Tuozhong Transmission Technology Co ltd
Current assignee: Nanjing Tuozhong Transmission Technology Co ltd
Priority date: 2022-04-22
Filing date: 2022-04-22
Publication date: 2022-08-19
Anticipated expiration: 2032-04-22

Abstract

The utility model discloses an accurate miniature seal structure for planetary gear box, its technical scheme main points are: the gearbox comprises a gearbox body, wherein a fixing plate is fixedly mounted on the top surface of the gearbox body, a first threaded hole is formed in one side of the fixing plate, and a bolt is mounted in the first threaded hole in a threaded manner; the sealing assembly is arranged on the top surface of the gear box body and used for sealing the gear box body, the box body used for installing the planetary gear can be fixed together by arranging the fixing plate, the satellite gear box generally adopts a structure of two half boxes, the structure is convenient to disassemble while the sealing performance is ensured, the satellite gear box can be maintained or replaced, through arranging the through hole, when lubricating oil is required to be added into the planetary gear, only the oil filling pipe needs to stretch into the through hole, after the oil filling is finished, the through hole only needs to be sealed by the sealing sleeve, and a small amount of lubricating oil is added into the oil seal groove.

Description

Accurate miniature seal structure for planetary gear box

Technical Field

The utility model relates to a planetary gear box technical field, concretely relates to accurate miniature seal structure for planetary gear box.

Background

The planetary gear box is a planetary reduction box, also called a gear box, and has a structure that a plurality of planetary gears rotate around a sun gear, and also is a mechanism for reducing the transmission speed ratio and increasing the torque force of a motor in proportion. Compared with the same type common gear physical box, the gear has the advantages of stable transmission, large bearing capacity, large transmission ratio in small space, long service life, small size and attractive appearance if the gear is a steel part. The motor is widely applied, is originally matched with a motor, and is also used in the fields of office automation, intelligent home, production automation, medical appliances, financial machinery, game machines and the like in the sun-shading industry, such as industries of automatic curtains, intelligent toilets, lifting systems, cash counters, advertising lamp boxes and the like besides being used for a miniature speed reducing motor.

In the existing planetary gear box, the two half boxes are directly spliced, the planetary gear assembly is placed in the box body, the work can be still finished in the using process, but the sealing function is not provided, lubricating oil is likely to leak in the using process, and if dust falls into the gear, the gear can be contacted with the dust, so that the gear is abraded.

SUMMERY OF THE UTILITY MODEL

The utility model provides a not enough to prior art, the utility model provides a precision seal structure for miniature planetary gear box has solved the problem that very probably can spill lubricating oil when using.

The above technical purpose of the present invention can be achieved by the following technical solutions:

a sealing structure for a precision micro planetary gear box, comprising: the gear box comprises a gear box body, wherein a fixing plate is fixedly mounted on the top surface of the gear box body, a first threaded hole is formed in one side of the fixing plate, and a bolt is mounted in the first threaded hole through threads; and the sealing assembly is arranged on the top surface of the gearbox body and used for sealing the gearbox body.

Through adopting above-mentioned technical scheme, through setting up the fixed plate, can be together fixed with the box that is used for installing planetary gear, for convenient dismantlement, what the satellite gear box generally all adopted is the structure of two half-cases, and such structure is when guaranteeing the leakproofness, and more convenient dismantlement can be maintained or be changed the satellite gear box.

Preferably, the seal assembly comprises: the gearbox comprises an oil seal groove, wherein the oil seal groove is formed in the top surface of the gearbox body, a through hole is formed in the bottom surface of the oil seal groove in a fixed sleeved mode, a sealing sleeve is movably sleeved at one end of the through hole, and a top cover is movably sleeved at the top end of the oil seal groove.

By adopting the technical scheme, through setting up the through hole, when need add lubricating oil to planetary gear, only need with add oil pipe stretch into the through hole can, after refueling the end, only need seal the through hole with the seal cover, add a small amount of lubricating oil to the oil seal groove again to reach the purpose of oil blanket.

The preferred, the inside fixed mounting of gear box body has the rigging board, the interior round wall movable sleeve of rigging board is equipped with two protective housings, the one end of protective housing is provided with the lubricating disc, the second screw hole has been seted up to one side of lubricating disc, the inside threaded connection of second screw hole has the threaded rod.

Through adopting above-mentioned technical scheme, through setting up the lubricating disc, can be so that threaded rod pivoted more in the same direction as smooth on the one hand, can not produce wearing and tearing to the threaded rod because be infected with the dust, on the other hand, the lubricating disc on both sides can carry out the secondary to protective housing inside and seal, prevents that the weeping from leaking to the periphery.

Preferably, a gear disc is fixedly mounted on one side, away from the lubricating disc, of the protective housing, a plurality of fixed shafts are fixedly mounted inside the gear disc, satellite wheels are movably sleeved on the outer circle wall surfaces of the fixed shafts, and the three satellite wheels are meshed with the gear disc.

Through adopting above-mentioned technical scheme, through setting up the toothed disc, can be in the same place with the meshing of three satellite wheel by the inside gear of toothed disc, can form the partial structure of satellite gear, through setting up the fixed axle for establish the satellite wheel cover on the fixed axle, thereby can ensure that the star gear is in the same place with the meshing of toothed disc.

Preferably, the outer circle wall surface of the threaded rod is fixedly sleeved with a sun wheel, and the sun wheel is meshed with the three satellite wheels.

Through adopting above-mentioned technical scheme, through setting up the sun gear, when the threaded rod rotated, can drive three satellite wheel and rotate to same direction, because three satellite wheel is in the same place with the toothed disc meshing to the toothed disc is in the same place with protective housing fixed mounting, therefore the protective housing can rotate thereupon together.

Preferably, a fixing block is arranged on one side of each of the two protective shells, and the two protective shells are fixedly mounted together through the fixing blocks.

Through adopting above-mentioned technical scheme, through setting up the fixed block, can be in the same place two protective casings are fixed, form a complete planetary gear structure.

To sum up, the utility model discloses mainly have following beneficial effect:

through setting up the fixed plate, can be together fixed with the box that is used for installing planetary gear, for convenient dismantlement, what the satellite gear box generally all adopted is the structure of two half casees, such structure is when guaranteeing the leakproofness, relatively convenient dismantlement, can maintain or change the satellite gear box, through setting up the through hole, when needs add lubricating oil to planetary gear, only need with add the oil pipe stretch into the through hole can, after refueling the completion, only need seal up the through hole with the seal cover, add a small amount of lubricating oil to the oil seal groove again, thereby reach the purpose of oil blanket.

Through setting up the lubricating disc, can be so that threaded rod pivoted is more smooth on the one hand, can not produce wearing and tearing because be infected with the dust to the threaded rod, on the other hand, the lubricating disc on both sides can carry out the secondary to the protective housing is inside, prevent that the weeping from leaking to the periphery, through setting up the toothed disc, can be in the same place with the meshing of three satellite wheel by the inside gear of toothed disc, can form the partial structure of satellite gear, through setting up the fixed axle, be used for establishing the satellite wheel cover on the fixed axle, thereby can ensure to defend the star gear and the toothed disc meshing together.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

fig. 2 is a schematic structural view of the attachment plate of the present invention;

fig. 3 is a schematic structural view of the protective casing of the present invention;

fig. 4 is a schematic structural view of the fixing plate of the present invention;

fig. 5 is an enlarged view of a part of a structure in fig. 2.

Reference numerals: 1. a gear box body; 2. a fixing plate; 3. a first threaded hole; 4. a bolt; 5. an oil seal groove; 6. a through opening; 7. a sealing sleeve; 8. a top cover; 9. attaching a plate; 10. a protective shell; 11. lubricating the disc; 12. a second threaded hole; 13. a threaded rod; 14. a gear plate; 15. a fixed shaft; 16. a satellite wheel; 17. a sun gear; 18. and (5) fixing blocks.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.

Referring to fig. 1, 2 and 5, a sealing structure for a precise micro planetary gear box comprises a gear box body 1, wherein a fixed plate 2 is fixedly installed on the top surface of the gear box body 1, a first threaded hole 3 is formed in one side of the fixed plate 2, a bolt 4 is installed in the first threaded hole 3 through internal threads, a sealing assembly is arranged on the top surface of the gear box body 1 and used for sealing the gear box body 1, the sealing assembly comprises an oil seal groove 5, the oil seal groove 5 is formed in the top surface of the gear box body 1, a through hole 6 is fixedly sleeved on the bottom surface of the oil seal groove 5, a sealing sleeve 7 is movably sleeved at one end of the through hole 6, a top cover 8 is movably sleeved at the top end of the oil seal groove 5, through the through hole 6, when lubricating oil needs to be added to the planetary gear, only an oil adding pipe needs to extend into the through hole 6, after oil adding is finished, only the through hole 6 needs to be sealed by the sealing sleeve 7, and then a small amount of lubricating oil is added into the oil seal groove 5, thereby achieving the purpose of oil seal.

Referring to fig. 1 and 2, an attachment plate 9 is fixedly installed inside a gear box body 1, two protective cases 10 are movably sleeved on an inner circular wall surface of the attachment plate 9, a lubricating disc 11 is arranged at one end of each protective case 10, a second threaded hole 12 is formed in one side of the lubricating disc 11, a threaded rod 13 is connected to the inner thread of the second threaded hole 12, a gear disc 14 is fixedly installed on one side of each protective case 10 far away from the lubricating disc 11, a plurality of fixed shafts 15 are fixedly installed inside the gear disc 14, satellite wheels 16 are movably sleeved on the outer circular wall surface of each fixed shaft 15, the three satellite wheels 16 are all meshed with the gear disc 14, and by arranging the gear disc 14, the gear wheel inside the gear wheel disc 14 is meshed with three satellite wheels 16, which can form part of the structure of the satellite gear wheel, by providing a fixed shaft 15, the driving device is used for sleeving the satellite wheel 16 on the fixed shaft 15, so that the satellite wheel 16 and the gear plate 14 can be meshed together.

Referring to fig. 1, 2 and 4, an outer circumferential wall surface of the threaded rod 13 is fixedly sleeved with a sun gear 17, the sun gear 17 is meshed with three satellite wheels 16, one side of the protective casing 10 is provided with a fixed block 18, the two protective casings 10 are fixedly mounted together through the fixed block 18, by arranging the sun gear 17, when the threaded rod 13 rotates, the three satellite wheels 16 are driven to rotate in the same direction, and because the three satellite wheels 16 are meshed with the gear plate 14, and the gear plate 14 is fixedly mounted with the protective casings 10, the protective casing 10 rotates together therewith.

The working principle is as follows: referring to fig. 1-5, the fixed plate 2 is used to fix the casing for installing the planetary gear together, for the convenience of disassembly, the satellite gear box generally adopts a structure of two half-casings, which is convenient for disassembly while ensuring the sealing property, and can be maintained or replaced, by providing the through-hole 6, when lubricant needs to be added to the planetary gear, only the oil filling pipe needs to be extended into the through-hole 6, after the oil filling is finished, only the sealing sleeve 7 needs to seal the through-hole 6, and then a small amount of lubricant is added into the oil seal groove 5, so as to achieve the purpose of oil sealing, by providing the lubricating discs 11, on one hand, the rotation of the threaded rod 13 can be smoother, and the threaded rod 13 is not abraded due to dust, on the other hand, the lubricating discs 11 at both sides can perform secondary sealing to the inside of the protective casing 10, the leakage of liquid is prevented from leaking to the periphery, the gear in the gear disc 14 can be meshed with the three satellite wheels 16 through the gear disc 14, a part of the structure of the satellite gears can be formed, and the satellite gears 16 are sleeved on the fixed shaft 15 through the fixed shaft 15, so that the fact that the satellite gears 16 are meshed with the gear disc 14 can be guaranteed.

Through setting up sun gear 17, when threaded rod 13 rotated, can drive three satellite wheel 16 and rotate to same direction, because three satellite wheel 16 and toothed disc 14 meshing are in the same place to toothed disc 14 and protective housing 10 fixed mounting are in the same place, so protective housing 10 can rotate along with it, through setting up fixed block 18, can fix two protective housings 10 together, form a complete planetary gear structure.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a precision seal structure for miniature planetary gear box which characterized in that includes:

the gearbox comprises a gearbox body (1), wherein a fixing plate (2) is fixedly mounted on the top surface of the gearbox body (1), a first threaded hole (3) is formed in one side of the fixing plate (2), and a bolt (4) is mounted in the first threaded hole (3) through threads;

the sealing assembly is arranged on the top surface of the gearbox body (1) and used for sealing the gearbox body (1).

2. The sealing structure for a precise micro planetary gearbox according to claim 1, wherein the sealing assembly comprises:

the gearbox comprises an oil seal groove (5), wherein the oil seal groove (5) is formed in the top surface of the gearbox body (1), a through hole (6) is fixedly sleeved on the bottom surface of the oil seal groove (5), a seal sleeve (7) is movably sleeved at one end of the through hole (6), and a top cover (8) is movably sleeved at the top end of the oil seal groove (5).

3. The sealing structure for the precise micro planetary gearbox is characterized in that a joint plate (9) is fixedly mounted inside the gearbox body (1), two protective shells (10) are movably sleeved on the inner circular wall surface of the joint plate (9), a lubricating disc (11) is arranged at one end of each protective shell (10), a second threaded hole (12) is formed in one side of each lubricating disc (11), and a threaded rod (13) is connected to the inner threads of the second threaded hole (12).

4. The sealing structure for the precise micro planetary gearbox according to claim 3, wherein a gear plate (14) is fixedly installed on one side, away from the lubricating plate (11), of the protective shell (10), a plurality of fixing shafts (15) are fixedly installed inside the gear plate (14), satellite wheels (16) are movably sleeved on the outer circle wall surface of each fixing shaft (15), and the three satellite wheels (16) are meshed with the gear plate (14).

5. The sealing structure for the precise micro planetary gearbox is characterized in that a sun wheel (17) is fixedly sleeved on the outer circular wall surface of the threaded rod (13), and the sun wheel (17) is meshed with three satellite wheels (16).

6. The sealing structure for the precise micro planetary gearbox is characterized in that a fixing block (18) is arranged on one side of the protective shell (10), and the two protective shells (10) are fixedly installed together through the fixing block (18).