CN220416123U - Planetary speed reducer - Google Patents
Planetary speed reducer Download PDFInfo
- Publication number
- CN220416123U CN220416123U CN202321636979.2U CN202321636979U CN220416123U CN 220416123 U CN220416123 U CN 220416123U CN 202321636979 U CN202321636979 U CN 202321636979U CN 220416123 U CN220416123 U CN 220416123U
- Authority
- CN
- China
- Prior art keywords
- end wall
- planetary
- gear
- sun gear
- bolts
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
- 239000003638 chemical reducing agent Substances 0.000 title claims abstract description 38
- 125000006850 spacer group Chemical group 0.000 claims abstract description 22
- 230000000149 penetrating effect Effects 0.000 claims abstract description 5
- 230000009286 beneficial effect Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 230000002035 prolonged effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012423 maintenance Methods 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Landscapes
- Retarders (AREA)
Abstract
The planetary reducer comprises a sun gear, a planetary support, a planetary gear and a gear ring; the planet carrier comprises a first end wall, a second end wall, a plurality of bolts and a plurality of spacers; the plurality of spacers are sleeved on the plurality of bolts in a one-to-one correspondence manner, the bolts transversely penetrate through the first end wall and the second end wall, the screw rods of the bolts are in threaded connection with the second end wall, the nuts of the bolts are pressed on the outer side surface of the first end wall, and two ends of the spacers are respectively propped against the inner side surfaces of the first end wall and the second end wall; the sun gear is arranged between the first end wall and the second end wall; the gear ring is arranged at the periphery of the sun gear; the planetary gear is arranged between the gear ring and the sun gear, and two sides of the planetary gear are respectively meshed with the gear ring and the sun gear; two ends of the planetary gear are respectively provided with a shaft head in a protruding mode, the two shaft heads are respectively connected to the first end wall and the second end wall in a penetrating mode, and the two shaft heads are respectively matched with the first end wall and the second end wall in a pivoting mode through a bearing. The utility model reduces the power loss of the planetary reducer and prolongs the service life of the planetary reducer.
Description
Technical Field
The utility model relates to the technical field of speed reducers, in particular to a planetary speed reducer.
Background
The planetary reducer is a common reducer, and generally comprises a sun gear, a gear ring, a planetary carrier and a planetary gear, wherein the sun gear is in pivot fit with the planetary carrier, the gear ring is arranged on the periphery of the sun gear, the planetary carrier is arranged between the gear ring and the sun gear, the inner side of the planetary gear is meshed with the sun gear, the outer side of the planetary gear is meshed with the gear ring, and when the sun gear rotates, the planetary gear is driven to rotate around the sun gear, and then the planetary carrier is driven to rotate, so that the aim of reducing speed is achieved. When the existing planetary reducer is assembled, as the planetary carrier is of an integral structure, after the sun gear is embedded into the planetary carrier, the planetary gear can only be embedded into the planetary carrier from the outer periphery of the planetary carrier, then the planetary gear is pivoted on the planetary carrier by utilizing a rotating shaft to traverse the planetary carrier and the planetary gear, when the rotating shaft traverses the planetary carrier, the bearing is difficult to install at the position where the rotating shaft is matched with the planetary carrier, most of the rotating shafts of the planetary gear are usually in clearance fit with preset holes on the planetary carrier, so that the pivot fit of the rotating shaft and the planetary carrier is realized, the friction force at the position where the rotating shaft is matched with the planetary carrier is larger, so that the power loss is larger, and meanwhile, after the planetary reducer is used for a long time, the abrasion of the rotating shaft is more serious, so that the service life of the planetary reducer is shorter.
Disclosure of Invention
Aiming at the defects of the prior art, the utility model aims to provide a planetary reducer with a power loss pin and a long service life.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
the planetary reducer comprises a sun gear, a planetary support, a planetary gear and a gear ring;
the planet carrier comprises a first end wall, a second end wall opposite to the first end wall, a plurality of bolts and a plurality of spacers; the plurality of spacers are sleeved on the plurality of bolts in a one-to-one correspondence manner, the bolts transversely penetrate through the first end wall and the second end wall, the screw rods of the bolts are in threaded connection with the second end wall, the nuts of the bolts are pressed on the outer side surface of the first end wall, and two ends of the spacers are respectively propped against the inner side surfaces of the first end wall and the second end wall;
the sun gear is arranged between the first end wall and the second end wall;
the gear ring is arranged at the periphery of the sun gear;
the planetary gear is arranged between the gear ring and the sun gear, and two sides of the planetary gear are respectively meshed with the gear ring and the sun gear; two ends of the planetary gear are respectively provided with a shaft head in a protruding mode, the two shaft heads are respectively connected to the first end wall and the second end wall in a penetrating mode, and the two shaft heads are respectively matched with the first end wall and the second end wall in a pivoting mode through a bearing.
The planetary gear comprises a plurality of planetary gears which are uniformly distributed on the outer periphery of a sun gear, and the gear sleeve is sleeved on the periphery of the plurality of planetary gears.
The plurality of planetary gears and the plurality of bolts are arranged at intervals along the circumferential direction of the sun gear.
The first end wall is provided with a first mounting hole, the second end wall is provided with a second mounting hole, the bearing is a roller bearing sleeved on the shaft head, the two roller bearings are respectively embedded in the first mounting hole and the second mounting hole, and the outer rings of the two roller bearings are respectively in tight fit with the inner walls of the first mounting hole and the second mounting hole.
The second end wall is provided with a threaded hole, the first end wall is provided with a through hole opposite to the threaded hole, and a screw rod of the bolt is screwed into the threaded hole after passing through the through hole.
The length of the spacer bush is d1, the distance between two end faces of the planetary gear is d2, d1 is larger than d2, and the difference between d1 and d2 is 4 mm-8 mm.
An output shaft is arranged on one side surface of the first end wall away from the second end wall in a protruding mode.
The second end wall is provided with a mounting hole penetrating from one side surface to the other side surface, and the inner diameter of the mounting hole is larger than the outer diameter of the sun gear.
At least two connecting lugs are arranged on the outer part of the gear ring in a protruding mode.
The utility model has the beneficial effects that:
the planetary support is of an assembled structure, so that the shaft heads at the two ends of the planetary gear can be arranged between the first end wall and the second end wall in advance during assembly, the shaft heads on the shaft heads can be embedded into preset bearing mounting positions on the first end wall and the second end wall, then the two ends of the planetary gear can be respectively in pivot fit with the first end wall and the second end wall through the bearings, friction force between the planetary gear and the planetary support is reduced, power loss of the planetary reducer is reduced, the service life of the planetary reducer is prolonged, and meanwhile, the planetary reducer is convenient to install and detach and convenient to maintain.
Drawings
FIG. 1 is an assembled schematic view of the present utility model;
fig. 2 is a cross-sectional view of the present utility model.
Detailed Description
The utility model is further described below with reference to the drawings and detailed description:
as shown in fig. 1 and 2, in a planetary reducer according to the present utility model, the planetary reducer includes a sun gear 10, a planetary carrier, a planetary gear 30, and a ring gear 40, where the planetary carrier includes a first end wall 22 and a second end wall 21, the first end wall 22 and the second end wall 21 are disposed opposite to each other, and in a split type mountable structure, concretely, the planetary carrier further includes a plurality of bolts 50 and a plurality of spacers 60, the plurality of spacers 60 are sleeved on the plurality of bolts 50 one by one, the bolts 50 traverse the first end wall 22 and the second end wall 21, the spacers 60 are disposed between the first end wall 22 and the second end wall 21, a screw rod 51 of the bolts 50 is screwed onto the second end wall 21, a nut 52 of the bolts 50 is pressed onto an outer side surface of the first end wall 22, during screwing the screw rod 51 of the bolts 50 onto the second end wall 21, a distance between the first end wall 22 and the second end wall 21 is gradually reduced, and finally, both inner side surfaces of the spacers 60 abut against the first end wall 22 and the second end wall 21, and the first end wall 50 are fixed together by using the bolts 50 and the spacers 21. The sun gear 10 is located between the first end wall 22 and the second end wall 21 with the sun gear 10 in an axially central position; the ring gear 40 is disposed on the periphery of the sun gear 10, the planetary gear 30 is mounted between the sun gear 10 and the ring gear 40, the inner side of the planetary gear 30 is engaged with the sun gear 10, the outer side is engaged with the ring gear 40, a shaft head 31 is respectively provided at the two end faces of the planetary gear 30 in a protruding manner, the shaft heads 31 are respectively penetrated on the first end wall 22 and the second end wall 21, and the shaft heads 31 are respectively pivotally engaged with the first end wall 22 and the second end wall 21 through a bearing 32.
In the utility model, the planet carrier consists of a first end wall 22 and a second end wall 21, the first end wall 22 and the second end wall 21 are matched in a detachable mode, when the planet carrier is assembled, a planet gear 30 can be arranged between the first end wall 22 and the second end wall 21, bearings 32 sleeved on shaft heads 31 at two ends of the planet gear 30 can be respectively matched with the first end wall 22 and the second end wall 21, then bolts 50 are screwed, and a matched spacer 60 is used for fixing the first end wall 22 and the first end wall 21. Because the planetary support is of the assembled structure, the shaft heads 31 at the two ends of the planetary gear 30 can be arranged between the first end wall 22 and the second end wall 21 in advance during assembly, so that the shaft heads on the shaft heads 31 can be embedded into preset bearing mounting positions on the first end wall 22 and the second end wall 21, and then the two ends of the planetary gear 30 can be respectively matched with the first end wall 22 and the second end wall 21 in a pivoting manner through bearings, so that friction force between the planetary gear 30 and the planetary support is reduced, power loss of the planetary reducer is reduced, service life of the planetary reducer is prolonged, and meanwhile, the planetary reducer is convenient to mount and dismount, and maintenance of the novel reducer is facilitated.
The planetary reducer comprises a plurality of planetary gears 30, wherein the plurality of planetary gears 30 are uniformly distributed on the outer periphery of a sun gear 10, and a gear ring 40 is sleeved on the periphery of the plurality of planetary gears 30. The number of the planetary gears 30 is set as needed. The plurality of planetary gears 30 and the plurality of bolts 50 may be arranged at intervals in the circumferential direction of the sun gear 10, so that the overall structure of the planetary reducer is more compact, and the space between the first end wall 22 and the second end wall 21 is fully utilized, which is beneficial to reducing the volume of the planetary reducer.
The first end wall 22 is provided with a first mounting hole 221, the second end wall 21 is provided with a second mounting hole 211, the first mounting hole 221 and the second mounting hole 211 are arranged opposite to each other, bearings 32 sleeved on the two shaft heads 31 of the planetary gear 30 are roller bearings, the two roller bearings are respectively embedded in the first mounting hole 221 and the second mounting hole 211, and the outer rings of the roller bearings are respectively in tight fit with the inner walls of the first mounting hole 221 and the second mounting hole 211.
The second end wall 21 is provided with a threaded hole 212, the first end wall 22 is provided with a through hole 222, the through hole 222 is opposite to the threaded hole 212, a screw rod of the bolt 50 passes through the through hole 222 from the outer side of the first end wall 22 and is then screwed into the threaded hole 212, the spacer 60 is placed between the first end wall 22 and the second end wall 21 during assembly, the spacer 60 is aligned with the through hole 222 and the threaded hole 212, and the screw rod 51 of the bolt 50 passes through the spacer 60 and is then screwed into the threaded hole 212. The length of the spacer 60 is d1, the distance between two end faces of the planet gear 30 is d2, d1 is larger than d2, the difference between d1 and d2 is 4 mm-8 mm, the spacer 60 defines the distance between the first end wall 22 and the second end wall 21, the distance between the first end wall 22 and the second end wall 21 is made to be d1, and after the planet reducer is installed, the two end faces of the planet gear are respectively in clearance fit with the first end wall 22 and the second end wall 21, so that the planet gear 30 is prevented from interfering with the first end wall 22 and the second end wall 21.
To facilitate assembly of the planetary reducer to the drive axle of a commercial vehicle, an output shaft 223 may be provided on the first end wall 22 projecting away from the second end wall 21, for example, by connecting the axle half shafts of the drive axle to the output shaft 223, the planetary reducer transmitting power between the drive system of the vehicle and the axle half shafts.
The second end wall 21 is provided with a mounting hole 213 penetrating from one side to the other, and the inner diameter of the mounting hole 213 is larger than the outer diameter of the sun gear 10, and when the sun gear 10 is assembled, the sun gear 10 may be placed between the second end wall 21 and the first end wall 22 from the outer side of the second end wall 21 via the mounting hole 213 so that the sun gear 10 is engaged with the planetary gear 30.
Two connection lugs 41 are provided to protrude from the outer portion of the ring gear 40, and the two connection lugs 41 are used to connect the planetary gear unit with other devices, for example, when the planetary gear unit is assembled to a transaxle of a commercial vehicle, the connection lugs 41 may be fastened to an axle housing of the transaxle by bolts.
The above embodiments are only for illustrating the technical solution of the present utility model, and are not limiting; although the utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art will understand that modifications may be made to the technical solutions described in the foregoing embodiments or equivalents may be substituted for some of the technical features thereof, and these modifications or substitutions do not depart from the spirit and scope of the technical solutions of the embodiments of the present utility model in essence.
Claims (9)
1. The planetary reducer is characterized by comprising a sun gear, a planetary carrier, a planetary gear and a gear ring;
the planet carrier comprises a first end wall, a second end wall opposite to the first end wall, a plurality of bolts and a plurality of spacers; the plurality of spacers are sleeved on the plurality of bolts in a one-to-one correspondence manner, the bolts transversely penetrate through the first end wall and the second end wall, the screw rods of the bolts are in threaded connection with the second end wall, the nuts of the bolts are pressed on the outer side surface of the first end wall, and two ends of the spacers are respectively propped against the inner side surfaces of the first end wall and the second end wall;
the sun gear is arranged between the first end wall and the second end wall;
the gear ring is arranged at the periphery of the sun gear;
the planetary gear is arranged between the gear ring and the sun gear, and two sides of the planetary gear are respectively meshed with the gear ring and the sun gear; two ends of the planetary gear are respectively provided with a shaft head in a protruding mode, the two shaft heads are respectively connected to the first end wall and the second end wall in a penetrating mode, and the two shaft heads are respectively matched with the first end wall and the second end wall in a pivoting mode through a bearing.
2. The planetary reducer of claim 1, comprising a plurality of planetary gears uniformly distributed on the outer periphery of the sun gear, wherein the gear ring is sleeved on the outer periphery of the plurality of planetary gears.
3. The planetary reducer of claim 2, wherein the plurality of planetary gears and the plurality of bolts are arranged at intervals along the circumferential direction of the sun gear.
4. The planetary reducer of claim 1, wherein a first mounting hole is formed in the first end wall, a second mounting hole is formed in the second end wall, the bearing is a roller bearing sleeved on the shaft head, the two roller bearings are respectively embedded in the first mounting hole and the second mounting hole, and outer rings of the two roller bearings are respectively in tight fit with inner walls of the first mounting hole and the second mounting hole.
5. The planetary reducer of claim 1, wherein the second end wall is provided with a threaded hole, the first end wall is provided with a through hole opposite to the threaded hole, and a screw of the bolt is screwed into the threaded hole after passing through the through hole.
6. The planetary reducer of claim 1, wherein the spacer has a length d1, the distance between the two end faces of the planetary gear is d2, d1 is greater than d2, and the difference between d1 and d2 is 4 mm-8 mm.
7. A planetary reducer according to claim 1, wherein an output shaft is provided protruding from a side of the first end wall remote from the second end wall.
8. A planetary reducer according to claim 1, wherein the second end wall is provided with a mounting hole extending from one side to the other, the mounting hole having an inner diameter larger than the outer diameter of the sun gear.
9. The planetary reducer according to claim 1, wherein the outer portion of the ring gear is provided with at least two connecting lugs.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321636979.2U CN220416123U (en) | 2023-06-27 | 2023-06-27 | Planetary speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202321636979.2U CN220416123U (en) | 2023-06-27 | 2023-06-27 | Planetary speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN220416123U true CN220416123U (en) | 2024-01-30 |
Family
ID=89642034
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202321636979.2U Active CN220416123U (en) | 2023-06-27 | 2023-06-27 | Planetary speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN220416123U (en) |
-
2023
- 2023-06-27 CN CN202321636979.2U patent/CN220416123U/en active Active
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CA3065802C (en) | Cutting unit of shearer, provided with double-speed rollers | |
| US9793777B2 (en) | Rotor bearing for an electrical machine | |
| CN202163832U (en) | Chain wheel shaft component of scraper conveyor | |
| CN220416123U (en) | Planetary speed reducer | |
| CN107387743B (en) | Large-scale wind-powered electricity generation gear box planet carrier bearing arrangement structure | |
| CN215806221U (en) | Wind-powered electricity generation gear box planetary rotation system | |
| CN112919017B (en) | Driving sprocket capable of being quickly disassembled and assembled and mounting method thereof | |
| CN208702901U (en) | A kind of split-type shaft bearing member facilitating installation | |
| CN219082199U (en) | Gear box shaft-out rod | |
| CN220956692U (en) | Yaw gearbox input structure | |
| CN216730519U (en) | A replacer for dismouting luggage tractor semi-axis screw | |
| CN214500609U (en) | Large-scale many fans electronic display screen rotary mechanism | |
| CN215444939U (en) | Hub reduction gear and vehicle | |
| CN220517903U (en) | Wheel end planetary speed reducing mechanism of axle and axle assembly | |
| CN216374163U (en) | Novel carrier hydraulic drive | |
| CN220242955U (en) | Electric drive structure of axle and axle | |
| CN219600921U (en) | Driving axle for preventing planet carrier from moving | |
| CN221033819U (en) | Split gear transmission structure and ribbon loom | |
| CN220523190U (en) | Wheel reduction structure and engineering bridge | |
| CN215046115U (en) | Combined chain wheel and coal feeder | |
| CN220049884U (en) | Reinforcing bar thread rolling structure for building | |
| CN220947369U (en) | Wheel disc driving shaft | |
| CN220891049U (en) | Planetary gear transmission structure and device | |
| CN220151839U (en) | Planetary reducer output transmission structure | |
| CN219082215U (en) | Speed reducer planetary gear with dustproof function |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant |