CN215110335U - Three-stage speed reducer - Google Patents
Three-stage speed reducer Download PDFInfo
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- CN215110335U CN215110335U CN202120769465.9U CN202120769465U CN215110335U CN 215110335 U CN215110335 U CN 215110335U CN 202120769465 U CN202120769465 U CN 202120769465U CN 215110335 U CN215110335 U CN 215110335U
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Abstract
The utility model belongs to the technical field of speed reducers, and relates to a three-stage speed reducer, which comprises an inner gear ring, wherein one axial end of the inner gear ring is fixedly connected with a front end cover, the other axial end of the inner gear ring is fixedly connected with a rear end cover, the center of the front end cover, which corresponds to one side of the inner gear ring, is integrally connected with a vertically arranged cylinder, a first-stage sun gear is sleeved on the cylinder, an input shaft is also installed on the front end cover, and an involute gear installed on the input shaft is meshed with the first-stage sun gear; the cylinder is also sleeved with a planet support component, a primary planet gear on one side of the planet support component is meshed with a primary sun gear, and a secondary sun gear is arranged on the other side of the planet support component. The speed reducer has the advantages of stable transmission, good transmission effect, low abrasion and long service life during working.
Description
Technical Field
The utility model belongs to the technical field of the reduction gear, a tertiary reduction gear is related to.
Background
The commonly used speed reducer mainly comprises a common cylindrical straight transmission gear speed reducer and a planetary gear speed reducer, and in the face of increasingly diversified transmission forms and power requirements, the commonly used speed reducer cannot meet the production requirements, and the exposure problem is more obvious. Although the structure of the common cylindrical direct-drive gear speed reducer is simpler, the speed reducer is large and heavy when a larger transmission ratio is needed, and the improvement of the power performance is not facilitated; the planet gear speed reducer has the characteristics of small volume, large transmission ratio, high contact ratio and suitability for heavy-load transmission, is widely commented and valued, and is gradually popularized and applied.
Disclosure of Invention
The utility model provides a to above-mentioned problem, a tertiary reduction gear is provided, and this reduction gear transmission is stable, and the transmission effect is good, and the during operation, wearing and tearing are low, longe-lived.
According to the technical scheme of the utility model: a three-level speed reducer is characterized in that: the front end cover is integrally connected with a vertically arranged cylinder corresponding to the center of one side of the inner gear ring, a primary sun gear is sleeved on the cylinder, an input shaft is further installed on the front end cover, and an involute gear installed on the input shaft is meshed with the primary sun gear;
the cylinder is also sleeved with a planet support assembly, a primary planet gear on one side of the planet support assembly is meshed with a primary sun gear, and a secondary sun gear is arranged on the other side of the planet support assembly;
an output shaft is rotatably arranged on the rear end cover, a shaft end of the output shaft extending into the inner gear ring is provided with a convex edge which is integrally connected, a secondary planetary gear arranged on one side of the convex edge is meshed with a secondary sun gear, and a positioning platform is constructed at the axial outer end of the output shaft.
As a further improvement of the utility model, the planet support component and the one-level sun gear are separated by the locating sleeve.
As a further improvement of the present invention, the planetary support assembly includes a planetary plate, a first pin is mounted on the planetary plate, a first-stage planetary gear is mounted on the first pin, and a second-stage sun gear is disposed at the rotation center of the other side of the planetary plate;
the convex edge is provided with a second column pin, and a second-stage planetary gear is arranged on the second column pin.
As a further improvement, the hole of rear end cap sets up the location boss, and the both sides of location boss set up a bearing respectively, and the output shaft rotates the supporting through two bearings.
As a further improvement, the shaft diameter of the output shaft extending out of the rear end cover is provided with a square groove.
As the utility model discloses a further improvement, the ring gear sets up the ring gear through-hole, and the front end housing sets up the front end cap through-hole, and the rear end cap sets up the rear end cap through-hole, ring gear through-hole, front end cap through-hole, the coaxial setting of rear end cap through-hole three.
As a further improvement, the front end cover is provided with an input shaft hole, and the input shaft is arranged in the input shaft hole.
As a further improvement, the planetary disk is provided with three one-level planetary gears uniformly distributed in the circumferential direction.
As a further improvement of the utility model, the partial diameter of cylinder installation one-level sun gear is greater than the partial diameter of installation planet bracket component.
The technical effects of the utility model reside in that: the utility model discloses the product is rational in infrastructure ingenious, one-level planetary gear, the planet support subassembly is by the radial support of cylinder left end step excircle, and the cylinder is a body coupling with the front end housing center, the front end housing is on circle including fixed connection again, operation in-process one-level sun gear like this, the central point of the relative ring gear in center of one-level planetary gear and planet support subassembly puts the difficult change, one-level sun gear and one-level planetary gear, planet support subassembly's second grade sun gear and second grade planetary gear, the meshing transmission is more steady between a second grade planetary gear and the ring gear, the gear is difficult to wear and tear, thereby the life-span of reduction gear has been improved greatly.
Because the reducer uses one straight transmission and two planetary reduction transmissions, the radial size of the structure of the first-level straight transmission is smaller than that of the inner hole of the inner gear ring, and the volume is greatly reduced compared with that of fixed-shaft transmission. And a relatively large transmission ratio can be realized.
Drawings
Fig. 1 is a schematic structural diagram of the present invention.
Fig. 2 is a sectional view taken along line a-a of the present invention.
Fig. 3 is a schematic view of the planetary carrier assembly of the present invention.
Detailed Description
The following description will further describe embodiments of the present invention with reference to the accompanying drawings.
In fig. 1 to 3, the planetary gear set comprises an input shaft 1, a front end cover through hole 101, a small outer circle 102, a cylinder 103, an input shaft hole 104, a primary sun gear 2, a primary planetary gear 3, a planetary support assembly 4, a first pin 401, a planetary disc 402, a secondary sun gear 403, a secondary planetary gear 5, a rear end cover 6, a rear end cover through hole 601, a bearing 7, an output shaft 8, a second pin 801, a rib 802, a square groove 803, a positioning platform 804, an inner gear ring 9, an inner gear ring through hole 901, a front end cover 10 and the like.
As shown in fig. 1-3, the utility model relates to a three-stage speed reducer, including ring gear 9, the axial one end fastening connection front end housing 10 of ring gear 9, the axial other end fastening connection rear end housing 6 of ring gear 9, front end housing 10 corresponds to the cylinder 103 of the central body coupling perpendicular setting of ring gear 9 one side, cylinder 103 is gone up the cover and is established one-level sun gear 2, one-level sun gear 2 center is equipped with cylindrical through-hole, cylindrical through-hole cup joints in front end housing 103 cylinder middle step excircle, the excircle is equipped with involute gear, a part of one-level sun gear 2 meshes with the involute gear of input shaft 1, input shaft 1 is still installed to front end housing 10, the involute gear of installation meshes with one-level sun gear 2 on the input shaft 1; the utility model provides a front end housing 10 is the dish type part, and front end housing 10's excircle has two unequal smooth face of cylinder of size to constitute, and little excircle 102 cover is established and is offset at the left end face of ring gear 9 for front end housing 10 and ring gear 9's radial positioning, the connection terminal surface of big or small excircle offsets with the left end face of ring gear.
The cylinder 103 is also provided with a planetary support assembly 4, the primary planetary gear 3 on one side of the planetary support assembly 4 is meshed with the other part of the primary sun gear 2, and the other side of the planetary support assembly 4 is provided with a secondary sun gear 403.
Further, as shown in fig. 3, the planet carrier assembly 4 includes a planet disk 402, a first pin 401 is mounted on the planet disk 402, the primary planet gear 3 is mounted on the first pin 401, specifically, the primary planet gear 3 is sleeved on the first pin 401 through a cylindrical through hole provided at the center of the primary planet gear 3, and the secondary sun gear 403 is provided at the rotation center of the other side of the planet disk 402; the rib 802 is provided with a second pin 801, and the second-stage planetary gear 5 is mounted on the second pin 801.
An output shaft 8 is rotatably arranged on the rear end cover 6, a protruding rib 802 integrally connected with the shaft end of the output shaft 8 extending into the inner gear ring 9 is arranged at one side of the protruding rib 802, the secondary planetary gear 5 arranged at one side of the protruding rib 802 is meshed with the secondary sun gear 403, and a positioning platform 804 is formed at the axial outer end of the output shaft 8. The secondary planet gear 5 drives the convex rib 802 to rotate, and the output shaft 8 rotates. The output shaft 8 extends out of the shaft diameter of the rear end cover 6 and is provided with a square groove 803.
The planet carrier assembly 4 and the primary sun gear 2 are separated by a positioning sleeve 11.
Further, the output shaft 8 is rotationally connected with the rear end cover 6 in the following manner: the inner hole of the rear end cover 6 is provided with a positioning boss, two sides of the positioning boss are respectively provided with a bearing 7, and the output shaft 8 is rotatably supported through the two bearings 7.
The inner gear ring 9 is provided with an inner gear ring through hole 901, the front end cover 10 is provided with a front end cover through hole 101, the rear end cover 6 is provided with a rear end cover through hole 601, and the inner gear ring through hole 901, the front end cover through hole 101 and the rear end cover through hole 601 are coaxially arranged.
The front end cover 10 is provided with an input shaft hole 104, and the input shaft 1 is mounted in the input shaft hole 104.
Further, three primary planet gears 3 are uniformly distributed in the circumferential direction of the planet disk 402.
The diameter of the portion of the cylinder 103 that mounts the primary sun gear 2 is larger than the diameter of the portion that mounts the planet carrier assembly member 4.
As shown in fig. 1-3, the working principle of the present invention is as follows: the first-stage reduction is gear direct drive, the other second-stage reductions are planetary drive, power is input from the input shaft 1, the first-stage sun gear 2 is driven to rotate around the center of the excircle of the middle step of the cylinder 103 of the front end cover 10 through an involute gear at the front end of the input shaft 1 to realize the first-stage gear direct drive reduction, the first-stage sun gear rotates around the excircle of the middle step of the cylinder 103 of the front end cover 10 to drive the first-stage planetary gear 3 to rotate along an involute gear with an inner hole of the inner ring gear, so that the planetary support assembly 4 is driven to rotate along the excircle of the step at the left end of the cylinder 103 to realize the second-stage planetary reduction, the second-stage sun gear 403 in the planetary support assembly 4 rotates to drive the second-stage planetary gear 5 to rotate along the involute gear with the inner hole of the inner ring gear, and the second-stage planetary gear 5 rotates to drive the output shaft 8 to rotate along the center of the bearing to realize the third-stage reduction. The power is output from the output shaft after three-stage speed reduction.
Claims (9)
1. A three-level speed reducer is characterized in that: the sun wheel device comprises an inner gear ring (9), wherein one axial end of the inner gear ring (9) is fixedly connected with a front end cover (10), the other axial end of the inner gear ring (9) is fixedly connected with a rear end cover (6), the front end cover (10) is integrally connected with a cylinder (103) which is vertically arranged corresponding to the center of one side of the inner gear ring (9), a primary sun wheel (2) is sleeved on the cylinder (103), an input shaft (1) is further installed on the front end cover (10), and an involute gear installed on the input shaft (1) is meshed with the primary sun wheel (2);
the cylinder (103) is also sleeved with a planet support component (4), a primary planet gear (3) at one side of the planet support component (4) is meshed with a primary sun gear (2), and a secondary sun gear (403) is arranged at the other side of the planet support component (4);
an output shaft (8) is rotatably arranged on the rear end cover (6), a shaft end of the output shaft (8) extending into the inner gear ring (9) is provided with a convex rib (802) which is integrally connected, a secondary planetary gear (5) arranged on one side of the convex rib (802) is meshed with a secondary sun gear (403), and a positioning platform (804) is constructed at the axial outer end of the output shaft (8).
2. A three-stage speed reducer according to claim 1 in which: the planet support component (4) and the primary sun gear (2) are separated by a positioning sleeve (11).
3. A three-stage speed reducer according to claim 1 in which: the planet support assembly (4) comprises a planet disc (402), a first pin (401) is installed on the planet disc (402), a primary planet gear (3) is installed on the first pin (401), and a secondary sun gear (403) is arranged at the rotation center of the other side of the planet disc (402);
the rib (802) is provided with a second pin (801), and the second-stage planetary gear (5) is mounted on the second pin (801).
4. A three-stage speed reducer according to claim 1 in which: the inner hole of the rear end cover (6) is provided with a positioning boss, two sides of the positioning boss are respectively provided with a bearing (7), and the output shaft (8) is rotatably supported through the two bearings (7).
5. A three-stage speed reducer according to claim 1 in which: and a square groove (803) is formed in the shaft diameter of the output shaft (8) extending out of the rear end cover (6).
6. A three-stage speed reducer according to claim 1 in which: the inner gear ring (9) is provided with an inner gear ring through hole (901), the front end cover (10) is provided with a front end cover through hole (101), the rear end cover (6) is provided with a rear end cover through hole (601), and the inner gear ring through hole (901), the front end cover through hole (101) and the rear end cover through hole (601) are coaxially arranged.
7. A three-stage speed reducer according to claim 1 in which: the front end cover (10) is provided with an input shaft hole (104), and the input shaft (1) is installed in the input shaft hole (104).
8. A three-stage speed reducer according to claim 3 in which: three primary planet gears (3) are uniformly distributed in the circumferential direction of the planet disk (402).
9. A three-stage speed reducer according to claim 1 in which: the diameter of the part of the cylinder (103) for mounting the primary sun gear (2) is larger than that of the part for mounting the planet support assembly (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120769465.9U CN215110335U (en) | 2021-04-15 | 2021-04-15 | Three-stage speed reducer |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202120769465.9U CN215110335U (en) | 2021-04-15 | 2021-04-15 | Three-stage speed reducer |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN215110335U true CN215110335U (en) | 2021-12-10 |
Family
ID=79265813
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202120769465.9U Active CN215110335U (en) | 2021-04-15 | 2021-04-15 | Three-stage speed reducer |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN215110335U (en) |
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2021
- 2021-04-15 CN CN202120769465.9U patent/CN215110335U/en active Active
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