CN218152289U

CN218152289U - Planet carrier assembly

Info

Publication number: CN218152289U
Application number: CN202222245190.6U
Authority: CN
Inventors: 李轩; 肖法厅; 李山; 颜世强; 王莹; 宋向阳; 吴丽丽; 苑婷婷; 薛艺
Original assignee: Shandong Gahead Drive Tech Co ltd
Current assignee: Shandong Gahead Drive Tech Co ltd
Priority date: 2022-08-25
Filing date: 2022-08-25
Publication date: 2022-12-27
Anticipated expiration: 2032-08-25

Abstract

The utility model discloses a planet carrier assembly, the utility model relates to a technical field of gear, including the planet carrier casing, planet carrier casing's a face is to the sunken recess that forms of relative another side, and the bottom of recess is fixed with a plurality of planet carrier axles, the bearing sets up around planet carrier axle, and the gear sets up around the bearing, is provided with first retaining ring between first ring channel and the second ring channel, and the third ring channel is sunken to the axle center of planet carrier axle by the outer wall of planet carrier axle and forms, and the bearing is located between third ring channel and the recess bottom, is provided with the second retaining ring in the third ring channel. The whole inner ring of the bearing is matched with the planet carrier shaft, the bearing load is high, and the bearing is prevented from being damaged early due to abnormal load; the planet carrier shaft and the planet carrier shell are integrated, so that the rigid fixation of the gear is more stable in the process of rotating and transmitting torque, and the gear meshing rate is ensured.

Description

Planet carrier assembly

Technical Field

The utility model relates to the technical field of gears, specifically speaking relates to a planet carrier subassembly.

Background

The planet carrier assembly is one of important constituent structures of the transmission at the tail end of a dry land drive axle and is a part for bearing the torque output of the drive axle.

The existing planet carrier assembly comprises planet gear shafts, and the planet gear shafts are pressed on a planet carrier shell in an interference fit mode. The defect of the structural form is that after the planet shaft is stressed and used for a long time, a clearance is generated at the interference fit position of the planet gear shaft and the planet carrier shell, so that the planet gear is damaged or the oil leakage phenomenon is caused by the existence of the clearance.

The planetary gear and the planetary gear shaft are installed in a matched mode through the roller pins, and therefore the assembling efficiency is low, the load is small and the like.

The planetary gear is axially fixed through the bolt, and the bolt can be subjected to fatigue fracture after being stressed for a long time, so that the planetary system is damaged.

Therefore, in order to improve the stability of the planetary system, the assembly efficiency and the damage of the fixing parts, a novel planet carrier assembly member is provided, which is convenient for solving the problems.

Disclosure of Invention

To the above defect, the utility model aims at providing a planet carrier subassembly aims at solving the fragile problem of gear among the prior art.

In order to solve the technical problem, the technical scheme of the utility model is that:

a planet carrier assembly comprises a planet carrier shell, wherein one surface of the planet carrier shell is sunken towards the other opposite surface to form a groove, a plurality of planet carrier shafts are fixed at the bottom of the groove, and the extending direction of the planet carrier shafts is the same as that of the groove; the planet carrier is characterized by further comprising a bearing and a gear, wherein the bearing is arranged around the planet carrier shaft, the gear is arranged around the bearing, the outer wall of the outer ring layer of the bearing is sunken towards the inner ring layer to form a first annular groove, the inner wall of the gear is sunken towards the outer wall of the gear to form a second annular groove, the first annular groove and the second annular groove are arranged oppositely, and a first retainer ring is arranged between the first annular groove and the second annular groove; the bearing is positioned between the third annular groove and the bottom of the groove, and a second retaining ring is arranged in the third annular groove.

Wherein the planet carrier shaft and the planet carrier shell are integrally formed.

The planet carrier shell further comprises a through hole, the through hole extends from the bottom of the groove to one surface of the groove far away from the planet carrier shaft, and a magnetic plug screw is installed in the through hole.

Wherein, the through-hole includes first end and second end, the magnetism plug screw includes connecting portion and bulge, the internal diameter of first end is less than the internal diameter of second end, the external diameter of connecting portion is less than the internal diameter of first end, the external diameter of bulge is greater than the internal diameter of first end and the external diameter of bulge is less than the internal diameter of second end, connecting portion are located inside the first end, the bulge is located inside the second end.

The inner wall of the second end protrudes towards the direction far away from the protruding part to form a fourth annular groove, and a sealing gasket is arranged between the fourth annular groove and the protruding part.

Wherein the bearing is a roller bearing.

After the technical scheme is adopted, the beneficial effects of the utility model are that:

firstly, the whole inner ring of the bearing is matched with the planet carrier shaft, the bearing load is high, and the bearing is prevented from being damaged early due to abnormal load;

secondly, the planet carrier shaft and the planet carrier shell are integrated, so that the rigid fixation of the gear is more stable in the process of rotating and transmitting torque of the gear, and the meshing rate of the gear is ensured. The carrier shaft is less affected by the expansion and contraction of the shaft due to temperature changes.

Drawings

FIG. 1 is a block diagram of a planet carrier assembly member;

FIG. 2 is a cross-sectional view of the planet carrier assembly member;

FIG. 3 is an enlarged partial view of the planet carrier assembly member;

FIG. 4 is a top view of the planet carrier assembly member.

Detailed Description

The present invention will be further explained with reference to the accompanying drawings.

The directions referred to in this specification all take the directions of the planet carrier assembly of the present invention during normal operation as the standard, and the directions during storage and transportation are not limited, and only represent relative positional relationships, not absolute positional relationships.

As shown in fig. 1-4, a planet carrier assembly comprises a planet carrier shell 101, wherein one surface of the planet carrier shell 101, which faces to the other surface, is recessed to form a groove 102, a plurality of planet carrier shafts 103 are fixed at the bottom of the groove 102, and the extension direction of the planet carrier shafts 103 is the same as that of the groove 102; the planetary gear set further comprises a bearing 104 and a gear 105, wherein the bearing 104 is arranged around the planet carrier shaft 103, the gear 105 is arranged around the bearing 104, the outer wall of the outer ring layer of the bearing 104 is sunken towards the inner ring layer to form a first annular groove 106, the inner wall of the gear 105 is sunken towards the outer wall of the gear to form a second annular groove 107, the first annular groove 106 and the second annular groove 107 are arranged oppositely, and a first retainer ring 108 is arranged between the first annular groove 106 and the second annular groove 107; the bearing 104 is positioned between the third annular groove 109 and the bottom of the groove 102, and a second retaining ring 110 is arranged in the third annular groove 109. The bearing 104 and the planet carrier shaft 103 are arranged in a matched mode, so that the load of the bearing 104 is higher, the bearing 104 is prevented from being interfered by abnormal load, the damage probability of the bearing 104 is reduced, and the service life of the whole device is greatly prolonged. Because the planet carrier shaft 103 is fixed at the bottom of the groove 102, when the bearing 104 is installed, the bearing 104 is directly sleeved on the planet carrier shaft 103, so that the installation efficiency of the bearing 104 is improved. In this embodiment, the first retainer 108 functions to fix the bearing 104 to the gear 105. In order to further facilitate the fixing, the scheme introduces the first annular groove 106 and the second annular groove 107, and the first retainer ring 108 is placed between the first annular groove 106 and the second annular groove 107, so that the possibility that the first retainer ring 108 falls off is reduced. In the scheme, the second retaining ring 110 is used for ensuring the axial positioning of the bearing 104, and similarly, in order to avoid the second retaining ring 110 from falling off, the third annular groove 109 is introduced, the first retaining ring 108 and the second retaining ring 110 are high in installation efficiency and strong in shearing capacity, so that the axial stability of the gear 105 on the planet carrier shaft 103 is ensured, and the sealing performance is improved.

In order to further increase the service life of the entire device, it is preferred that the planet carrier shaft 103 is integrally formed with the planet carrier housing 101. The planet carrier shaft 103 and the planet carrier shell 101 are integrated, so that the rigid fixation of the gear 105 is more stable in the process of rotating and transmitting torque of the gear 105, the meshing rate of the gear 105 is ensured, and the influence of expansion and contraction of the shaft caused by temperature change on the planet carrier shaft 103 is smaller.

In order to avoid the phenomenon of early oil leakage caused by the damage of the oil seal by the iron cutting, it is preferable that the planet carrier shell 101 further comprises a through hole 111, the through hole 111 extends from the bottom of the groove 102 to the surface of the groove 102 far away from the planet carrier shaft 103, and a magnetic screw plug 112 is installed in the through hole 111. The gear 105, in the early stages of rotation, produces worn iron filings that, if not dealt with in time, would damage the oil seal. For this reason, the device introduces a magnetic screw plug 112 to perform adsorption treatment on the iron filings.

To facilitate fixing the magnetic screw 112 in the through hole 111, preferably, the through hole 111 includes a first end 111a and a second end 111b, the magnetic screw 112 includes a connecting portion 112a and a protruding portion 112b, an inner diameter of the first end 111a is smaller than an inner diameter of the second end 111b, an outer diameter of the connecting portion 112a is smaller than the inner diameter of the first end 111a, an outer diameter of the protruding portion 112b is larger than the inner diameter of the first end 111a and an outer diameter of the protruding portion 112b is smaller than the inner diameter of the second end 111b, the connecting portion 112a is located inside the first end, and the protruding portion 112b is located inside the second end. This design allows the protrusion 112b of the magnetic plug 112 to be caught at the second end 111b of the through hole 111 when the magnetic plug 112 is installed in the through hole 111, i.e. the end of the through hole 111 away from the planet carrier shaft 103, which facilitates the detachment and installation of the magnetic plug 112.

In order to ensure the sealing performance of the whole device, it is preferable that the inner wall of the second end 111b protrudes in a direction away from the protrusion 112b to form a fourth annular groove 113, and a sealing gasket 114 is disposed between the fourth annular groove 113 and the protrusion 112 b. The presence of the sealing gasket 114 allows the space between the magnetic plug 112 and the through hole 111 to be filled, thus greatly increasing the tightness.

The roller bearing has the advantages of small moment required by starting, high rotation precision, convenience in selection and the like. Thus, the bearing 104 is a roller bearing.

The present invention is not limited to the above specific embodiments, and those skilled in the art can make various changes without creative labor from the above conception, and all the changes fall within the protection scope of the present invention.

Claims

1. A planet carrier assembly comprising a planet carrier housing, a face of which is recessed towards an opposite face to form a recess, characterised in that: a plurality of planet carrier shafts are fixed at the bottom of the groove, and the extending direction of the planet carrier shafts is the same as that of the groove; the planet carrier is characterized by further comprising a bearing and a gear, wherein the bearing is arranged around the planet carrier shaft, the gear is arranged around the bearing, the outer wall of the outer ring layer of the bearing is sunken towards the inner ring layer to form a first annular groove, the inner wall of the gear is sunken towards the outer wall of the gear to form a second annular groove, the first annular groove and the second annular groove are arranged oppositely, and a first retainer ring is arranged between the first annular groove and the second annular groove; the bearing is positioned between the third annular groove and the bottom of the groove, and a second retaining ring is arranged in the third annular groove.

2. The planet carrier assembly member of claim 1, wherein: the planet carrier shaft and the planet carrier shell are integrally formed.

3. The planet carrier assembly of claim 1 wherein: the planet carrier shell further comprises a through hole, the through hole extends from the bottom of the groove to one surface of the groove far away from the planet carrier shaft, and a magnetic plug screw is installed in the through hole.

4. A planet carrier assembly according to claim 3, wherein: the through-hole includes first end and second end, the magnetism plug screw includes connecting portion and bulge, the internal diameter of first end is less than the internal diameter of second end, the external diameter of connecting portion is less than the internal diameter of first end, the external diameter of bulge is greater than the internal diameter of first end and the external diameter of bulge is less than the internal diameter of second end, connecting portion are located inside the first end, the bulge is located inside the second end.

5. The planet carrier assembly of claim 4 wherein: the inner wall of the second end protrudes towards the direction far away from the protruding part to form a fourth annular groove, and a sealing gasket is arranged between the fourth annular groove and the protruding part.

6. The planet carrier assembly of claim 1 wherein: the bearing is a roller bearing.