CN210510193U - Planetary cement grinding gearbox - Google Patents
Planetary cement grinding gearbox Download PDFInfo
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- CN210510193U CN210510193U CN201921498176.9U CN201921498176U CN210510193U CN 210510193 U CN210510193 U CN 210510193U CN 201921498176 U CN201921498176 U CN 201921498176U CN 210510193 U CN210510193 U CN 210510193U
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Abstract
The utility model belongs to the technical field of gear drive, a planet cement grinds gearbox is disclosed. The planetary cement grinding gearbox comprises a primary parallel-stage speed reducing part and a planetary speed reducing part connected with the primary parallel-stage speed reducing part; the first-stage parallel-stage speed reduction part comprises an input shaft and a parallel-stage shaft arranged in parallel with the input shaft; the input shaft is provided with a first gear, the parallel stage shaft is provided with a second gear, the first gear is meshed with the second gear, and the outer diameter of the first gear is smaller than that of the second gear; the parallel stage shaft is connected with the planetary reduction part. The utility model discloses a planet cement grinds gearbox includes parallel level of one-level speed reduction part and planet speed reduction part, and with parallel level speed reduction and the combination of planet speed reduction part, can guarantee that the velocity ratio reaches the demand, can avoid using the multistage parallel level again to lead to the great problem of gear box volume.
Description
Technical Field
The utility model relates to a gear drive technical field especially relates to a planet cement grinds gearbox.
Background
The existing planetary cement grinding gearbox mainly adopts a transmission structure with two-stage planetary coaxial output, as shown in figure 1. Or a multi-stage parallel shaft driven power splitting structure, also called a center driven cement mill, as shown in fig. 2.
The structure of the two-stage planet is not large enough in speed ratio, and cannot realize the super-large speed ratio and the requirement of low-speed maintenance of the whole equipment.
The multi-stage parallel shaft transmission structure is large in size, small in transmission ratio, low in power density and high in processing and manufacturing cost.
Accordingly, the prior art is yet to be improved and developed.
SUMMERY OF THE UTILITY MODEL
An object of the utility model is to provide a planet cement grinds gearbox to it is big inadequately to solve among the prior art planet cement grinds gearbox speed ratio, and the great problem of volume.
To achieve the purpose, the utility model adopts the following technical proposal:
a planetary cement grinding gearbox comprises a primary parallel-stage speed reduction part and a planetary speed reduction part connected with the primary parallel-stage speed reduction part;
the first-stage parallel-stage speed reduction part comprises an input shaft and a parallel-stage shaft arranged in parallel with the input shaft; the input shaft is provided with a first gear, the parallel stage shaft is provided with a second gear, the first gear is meshed with the second gear, and the outer diameter of the first gear is smaller than that of the second gear;
the parallel stage shaft is connected with the planetary reduction part.
Optionally, the planetary reduction part comprises a front sun gear, the front sun gear is connected with the parallel-stage shaft, and the front sun gear is meshed with the front planet gear; the front-stage planet gear is meshed with the front-stage inner gear ring and is mounted on the front-stage planet carrier through a front-stage planet gear shaft;
the front-stage planet carrier is connected with the output sun gear; the output sun gear is meshed with the output planet gear; the output planet gear is meshed with the output inner gear ring, and the output planet gear is arranged on the output planet carrier through an output planet gear shaft.
Optionally, the preceding stage planet carrier with the one end that the output sun gear is connected is provided with the internal tooth, the tip of output sun gear be provided with the external tooth of the internal tooth adaptation of preceding stage planet carrier, the preceding stage planet carrier with the output sun gear is connected through inside and outside tooth meshing.
Optionally, cushion blocks are arranged at two ends of the front-stage sun wheel shaft and two ends of the output sun wheel shaft.
Optionally, the system further comprises an auxiliary transmission gear box; the auxiliary transmission gear box comprises an auxiliary transmission box body and an auxiliary transmission motor arranged on the auxiliary transmission box body; a motor shaft of the auxiliary transmission motor is connected with an auxiliary transmission shaft, and the auxiliary transmission shaft is in transmission connection with an auxiliary transmission output shaft through a reduction gear set; the auxiliary transmission output shaft is connected with the auxiliary transmission input shaft, a third gear is arranged on the auxiliary transmission input shaft, and the third gear is meshed with the second gear.
Optionally, the auxiliary transmission gear box is connected with a first box body of the planetary cement grinding gear box, the first box body is connected with a bearing seat, the bearing seat is connected with a second box body, and the second box body is connected with a third box body; the second box body and the third box body are connected with a foundation.
Optionally, the auxiliary transmission output shaft is connected with the auxiliary transmission input shaft through an overrunning clutch.
Optionally, a centrifugal brake and a band-type brake are arranged at the tail end of the auxiliary transmission shaft.
Optionally, the input shaft is a gear shaft, and the parallel stage shaft is a gear sleeve shaft.
The utility model has the advantages that:
the utility model discloses a planet cement grinds gearbox includes parallel level of one-level speed reduction part and planet speed reduction part, and with parallel level speed reduction and the combination of planet speed reduction part, can guarantee that the velocity ratio reaches the demand, can avoid using the multistage parallel level again to lead to the great problem of gear box volume, compact structure, the velocity ratio is higher.
Drawings
FIG. 1 is a simplified transmission schematic diagram of a prior art planetary cement grinding gearbox with two-stage planetary coaxial output;
FIG. 2 is a simplified prior art transmission schematic of a planetary cement grinding gearbox utilizing multiple parallel shafts;
FIG. 3 is a schematic structural view of an embodiment of the planetary cement grinding gearbox of the present invention;
FIG. 4 is a schematic structural view of the auxiliary transmission gear box of the present invention;
figure 5 is a simplified drive scheme of the planetary cement grinding gearbox embodiment of the present invention.
In the figure:
1. planetary cement grinding gearbox; 2. a first-stage parallel-stage speed reduction section; 3. a planetary reduction section; 4. an input shaft; 5. a parallel stage axis; 6. a first gear; 7. a second gear; 8. an auxiliary transmission gear box; 9. an auxiliary transmission motor; 10. an auxiliary transmission shaft;
11. an auxiliary transmission output shaft; 12. auxiliary transmission input shaft; 13. a third gear; 14. a front sun gear; 15. a preceding-stage planet wheel; 16. a front-stage annular gear; 17. a preceding stage planet carrier; 18. an output sun gear; 19. an output planet wheel; 20. an output ring gear;
21. an output planet carrier; 22. an overrunning clutch; 23. a first case; 24. a second case; 25. a third box body; 26. a bearing seat; 27. cushion blocks; 28. a centrifugal brake; 29. a band-type brake; 30. and (4) auxiliary transmission adapter.
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples. It is to be understood that the specific embodiments described herein are merely illustrative of the invention and are not limiting of the invention. It should be further noted that, for the convenience of description, only some of the structures related to the present invention are shown in the drawings, not all of the structures.
In the description of the present invention, unless expressly stated or limited otherwise, the terms "connected," "connected," and "fixed" are to be construed broadly, e.g., as meaning permanently connected, detachably connected, or integral to one another; can be mechanically or electrically connected; either directly or indirectly through intervening media, either internally or in any other relationship. The specific meaning of the above terms in the present invention can be understood in specific cases to those skilled in the art.
In the present disclosure, unless expressly stated or limited otherwise, the first feature "on" or "under" the second feature may comprise direct contact between the first and second features, or may comprise contact between the first and second features not directly. Also, the first feature being "on," "above" and "over" the second feature includes the first feature being directly on and obliquely above the second feature, or merely indicating that the first feature is at a higher level than the second feature. A first feature being "under," "below," and "beneath" a second feature includes the first feature being directly under and obliquely below the second feature, or simply meaning that the first feature is at a lesser elevation than the second feature.
In the description of the present embodiment, the terms "upper", "lower", "right", etc. are used in an orientation or positional relationship based on that shown in the drawings only for convenience of description and simplicity of operation, and do not indicate or imply that the device or element referred to must have a particular orientation, be constructed and operated in a particular orientation, and thus, should not be construed as limiting the present invention. Furthermore, the terms "first" and "second" are used only for descriptive purposes and are not intended to have a special meaning.
It should be noted that the embodiments and features of the embodiments in the present application may be combined with each other without conflict.
The technical solution of the present invention is further explained by the following embodiments with reference to the accompanying drawings.
Fig. 3 is a schematic structural diagram of an embodiment of the planetary cement grinding gearbox of the present invention, and as shown in fig. 3, the planetary cement grinding gearbox 1 includes a one-stage parallel reduction part 2 and a planetary reduction part 3 connected to the one-stage parallel reduction part 2.
The one-stage parallel-stage speed reduction portion 2 includes an input shaft 4, and a parallel-stage shaft 5 disposed in parallel with the input shaft 4. The input shaft 4 is used for being connected with a main motor, and when the planetary cement grinding gear box 1 works, the main motor is used as driving equipment for driving the planetary cement grinding gear box 1 to work. The input shaft 4 is provided with a first gear 6, the parallel stage shaft 5 is provided with a second gear 7, the first gear 6 is meshed with the second gear 7, the outer diameter of the first gear 6 is smaller than that of the second gear 7, parallel stage speed reduction is realized, and only one parallel stage shaft 5 is meshed with the input shaft 4 for speed reduction through a group of gear pairs.
The parallel stage shaft 5 is connected to the planetary reduction portion 3, transmits the torque to the planetary reduction portion 3 for further reduction, and then outputs.
In order to facilitate the maintenance of the planetary cement grinding gearbox 1, as shown in fig. 3, the planetary cement grinding gearbox 1 further comprises an auxiliary transmission gearbox 8. The motor that the during operation of planet cement grinding gear case 1 used is the main motor that input shaft 4 front end is connected, when planet cement grinding gear case 1 need overhaul, then uses the lower supplementary biography motor 9 operation of rotational speed to overhaul.
The auxiliary transmission motor 9 of the auxiliary transmission gear box 8 has low rotating speed, a plurality of groups of gears are arranged in the auxiliary transmission gear box 8 for reducing the rotating speed, and then the reduced torque is transmitted to the parallel-stage shaft 5 and further transmitted to the planetary reduction part 3 at the rear end.
Referring to fig. 3 and 4, the auxiliary transmission gear box 8 includes an auxiliary transmission box body and an auxiliary transmission motor 9 disposed on the auxiliary transmission box body, a motor shaft of the auxiliary transmission motor 9 is connected to an auxiliary transmission shaft 10, the auxiliary transmission shaft 10 is in transmission connection with an auxiliary transmission output shaft 11 through a reduction gear set, the reduction gear set is disposed in the auxiliary transmission box body of the auxiliary transmission gear box 8, as shown in fig. 4, the auxiliary transmission output shaft 11 is connected to an auxiliary transmission input shaft 12, a third gear 13 is disposed on the auxiliary transmission input shaft 12, and the third gear 13 is engaged with the second gear 7, so that the torque of the auxiliary transmission gear box 8 is transmitted to the parallel stage shaft 5 connected to the second gear 7. As described above, the input shaft 4 and the parallel-stage shaft 5 form a parallel-stage speed reduction, and similarly, the auxiliary transmission input shaft 12 and the parallel-stage shaft 5 also form a parallel-stage speed reduction, except that the parallel-stage speed reduction formed by the input shaft 4 and the parallel-stage shaft 5 is used in an operating state of the planetary cement grinding gearbox 1, and the parallel-stage speed reduction formed by the auxiliary transmission input shaft 12 and the parallel-stage shaft 5 is used in a maintenance state of the planetary cement grinding gearbox 1. The auxiliary transmission motor 9 and the main motor are arranged to realize double input.
When the auxiliary transmission gear box 8 is not needed, the auxiliary transmission gear box 8 is cut off through the clutch. As shown in fig. 3 and 4, the auxiliary transmission output shaft 11 is connected to the auxiliary transmission input shaft 12 through an overrunning clutch 22, and the overrunning clutch 22 is capable of connecting and disconnecting the auxiliary transmission output shaft 11 to and from the auxiliary transmission input shaft 12. When the planetary cement grinding gearbox 1 needs to be driven by the main motor to operate, the overrunning clutch 22 separates the auxiliary transmission output shaft 11 from the auxiliary transmission input shaft 12, so that the auxiliary transmission gearbox 8 is cut off, the torque transmission of the main motor connected with the input shaft 4 cannot influence the auxiliary transmission motor 9, the auxiliary transmission motor 9 cannot be driven to rotate together, and the automatic clutch of the auxiliary transmission gearbox 8 is realized. When the planetary cement grinding gearbox 1 needs to be overhauled, the overrunning clutch 22 connects the auxiliary transmission output shaft 11 with the auxiliary transmission input shaft 12, torque input of the planetary cement grinding gearbox 1 is achieved through the auxiliary transmission motor 9, slow rotation is achieved, overhauling is conducted, the rotating speed during overhauling is low, influence on the main motor is not large, connection of the main motor does not need to be cut off, and the main motor does not need to be separated through the overrunning clutch 22.
With continued reference to fig. 3, the planetary reduction section 3 includes a front sun gear 14, the front sun gear 14 is connected to the parallel stage shaft 5, the front sun gear 14 is engaged with a front planet gear 15, the front planet gear 15 is engaged with a front ring gear 16, and the front planet gear 15 is mounted on a front planet carrier 17 through a front planet gear shaft, forming a first stage planetary reduction.
The preceding-stage planet carrier 17 is connected with an output sun gear 18, the output sun gear 18 is meshed with an output planet gear 19, the output planet gear 19 is meshed with an output annular gear 20, and the output planet gear 19 is mounted on an output planet carrier 21 through an output planet gear shaft to form a second-stage planetary speed reduction.
In one embodiment, the parallel-stage shaft 5 is a sleeve shaft, and a sleeve is provided at an end of the sleeve shaft, and as shown in fig. 3, a sleeve is provided at an end of the parallel-stage shaft 5 connected to the front-stage sun gear 14, and inner teeth are provided in the sleeve, and outer teeth are provided at an end of the front-stage sun gear 14, and the parallel-stage shaft 5 and the front-stage sun gear 14 are connected by inner and outer teeth.
The connection between the output sun gear 18 and the preceding stage planet carrier 17 is also an internal and external gear connection, one end of the preceding stage planet carrier 17 connected with the output sun gear 18 is provided with internal teeth, the end part of the output sun gear 18 is provided with external teeth matched with the internal teeth of the preceding stage planet carrier 17, and the preceding stage planet carrier 17 and the output sun gear 18 are meshed and connected through the internal and external teeth so that the output sun gear 18 rotates synchronously along with the preceding stage planet carrier 17.
The external teeth on the output sun gear 18 are simultaneously manufactured by two processing technologies of gear hobbing and gear grinding, so that the processing efficiency of the output sun gear 18 is high, and the processing cost is low. As shown in fig. 3, the external teeth on the output sun gear 18 include not only external teeth meshing with the front stage carrier 17 but also external teeth meshing with the output planet gear 19.
In one embodiment, the input shaft 4 is a gear shaft, and as a matter of course, the input shaft 4 is formed with integrally formed external teeth, i.e., the first gear 6.
With continued reference to fig. 3, the housing of the planetary cement grinding gearbox 1 includes the housing of the secondary gearbox 8, a first housing 23, a second housing 24, and a third housing 25. The case of the auxiliary transmission gear case 8 is connected to the first case 23. A bearing seat 26 is further arranged between the first box 23 and the second box 24, and the first box 23 is connected with the bearing seat 26 through a bolt. The bearing support 26 is connected to the second casing 24 via the backing ring gear 16, i.e. the backing ring gear 16 is connected at one end to the bearing support 26 and at the other end to the second casing 24, preferably by bolting. The second casing 24 is connected with the third casing 25 through the output ring gear 20, that is, one end of the output ring gear 20 is connected with the second casing 24, and the other end is connected with the third casing 25, and the connection modes are preferably bolt connection. The second casing 24 and the third casing 25 are used for being connected with a foundation, and the whole planetary cement grinding gearbox 1 is installed on the foundation. As shown in fig. 3, bolt holes for connection to the foundation are provided in the second casing 24 and the third casing 25.
As shown in fig. 3, the auxiliary transmission gearbox 8 is not grounded, i.e. not connected to the ground, but suspended from the first casing 23. In one embodiment, the auxiliary transmission gear box 8 is connected to the first housing 23 through an auxiliary transmission adapter 30, and the auxiliary transmission adapter 30 is a connecting member similar to a connecting bracket for connecting the auxiliary transmission gear box 8 and the first housing 23.
As shown in fig. 3, in order to prevent the axial play of the front sun gear 14 and the output sun gear 18, the two ends of the axle of the front sun gear 14 and the two ends of the axle of the output sun gear 18 are provided with spacers 27, and the spacers 27 are made of wear-resistant materials, such as 20CrNi2Mo, but may be made of other wear-resistant materials for limiting the position.
In one embodiment, the end of the secondary drive shaft 10 is provided with a centrifugal brake 28 and a band-type brake 29. The centrifugal brake 28 is used for realizing the braking of the auxiliary transmission motor 9, and the band-type brake 29 is used for limiting the reverse rotation of the auxiliary transmission motor 9.
Fig. 5 is the simplified transmission structure schematic diagram of the embodiment of the planetary cement grinding gearbox of the utility model, which can be known by combining fig. 3, fig. 4 and fig. 5, the utility model discloses planetary cement grinding gearbox 1 adopts one-level parallel shaft and two-stage planetary structure, and the equal load-carrying capacity and the bearing capacity of the gearbox are improved. In addition, the structure has high power density and compact structure, and reduces the volume and weight of the gear box. The utility model discloses planet cement grinding gearbox 1's maximum output torque can reach 5800kN m (thousand nimetres), and rated input power is 3800kW (kilowatt), and final reduction ratio 94, when the supplementary transmission, the gross reduction ratio is 7520, realizes the low rotational speed operation of master gearbox, satisfies the demand in market.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not intended to limit the embodiments of the present invention. Numerous obvious variations, rearrangements and substitutions will now occur to those skilled in the art without departing from the scope of the invention. And are neither required nor exhaustive of all embodiments. Any modification, equivalent replacement, and improvement made within the spirit and principle of the present invention should be included in the protection scope of the claims of the present invention.
Claims (9)
1. A planetary cement grinding gearbox is characterized by comprising a primary parallel-stage speed reduction part (2) and a planetary speed reduction part (3) connected with the primary parallel-stage speed reduction part (2);
the primary parallel-stage speed reduction part (2) comprises an input shaft (4) and a parallel-stage shaft (5) arranged in parallel with the input shaft (4); a first gear (6) is arranged on the input shaft (4), a second gear (7) is arranged on the parallel stage shaft (5), the first gear (6) is meshed with the second gear (7), and the outer diameter of the first gear (6) is smaller than that of the second gear (7);
the parallel stage shaft (5) is connected with the planetary reduction part (3).
2. A planetary cement grinding gearbox according to claim 1, characterized in that said planetary reduction section (3) comprises a front sun wheel (14), said front sun wheel (14) being connected to said parallel stage shaft (5) and said front sun wheel (14) being in mesh with a front planet wheel (15); the front-stage planet gear (15) is meshed with a front-stage annular gear (16), and the front-stage planet gear (15) is mounted on a front-stage planet carrier (17) through a front-stage planet gear shaft;
the front-stage planet carrier (17) is connected with an output sun gear (18); the output sun gear (18) is meshed with the output planet gear (19); the output planet gear (19) is meshed with an output annular gear (20), and the output planet gear (19) is mounted on an output planet carrier (21) through an output planet gear shaft.
3. A planetary cement grinding gearbox according to claim 2, characterized in that the end of the preceding stage planet carrier (17) connected with the output sun gear (18) is provided with internal teeth, the end of the output sun gear (18) is provided with external teeth adapted with the internal teeth of the preceding stage planet carrier (17), the preceding stage planet carrier (17) is connected with the output sun gear (18) through internal and external teeth meshing.
4. A planetary cement grinding gearbox according to claim 2, characterized in that both ends of the front sun (14) axle and both ends of the output sun (18) axle are provided with spacers (27).
5. A planetary cement grinding gearbox according to claim 1, characterized by further comprising an auxiliary transmission gearbox (8); the auxiliary transmission gear box (8) comprises an auxiliary transmission box body and an auxiliary transmission motor (9) arranged on the auxiliary transmission box body; a motor shaft of the auxiliary transmission motor (9) is connected with an auxiliary transmission shaft (10), and the auxiliary transmission shaft (10) is in transmission connection with an auxiliary transmission output shaft (11) through a reduction gear set; the auxiliary transmission output shaft (11) is connected with the auxiliary transmission input shaft (12), a third gear (13) is arranged on the auxiliary transmission input shaft (12), and the third gear (13) is meshed with the second gear (7).
6. A planetary cement grinding gearbox according to claim 5, characterized in that said secondary gearbox (8) is connected to a first box (23) of said planetary cement grinding gearbox, said first box (23) being connected to a bearing housing (26), said bearing housing (26) being connected to a second box (24), said second box (24) being connected to a third box (25); the second and third cases (24, 25) are connected to a foundation.
7. A planetary cement grinding gearbox according to claim 5, characterized in that the connection between said secondary transmission output shaft (11) and said secondary transmission input shaft (12) is through an overrunning clutch (22).
8. A planetary cement grinding gearbox according to claim 5, characterized in that the secondary transmission shaft (10) is provided with a centrifugal brake (28) and a band-type brake (29) at its end.
9. A planetary cement grinding gearbox according to claim 1, characterized in that said input shaft (4) is a pinion shaft and said parallel stage shaft (5) is a sleeve shaft.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921498176.9U CN210510193U (en) | 2019-09-10 | 2019-09-10 | Planetary cement grinding gearbox |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201921498176.9U CN210510193U (en) | 2019-09-10 | 2019-09-10 | Planetary cement grinding gearbox |
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| Publication Number | Publication Date |
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| CN210510193U true CN210510193U (en) | 2020-05-12 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201921498176.9U Active CN210510193U (en) | 2019-09-10 | 2019-09-10 | Planetary cement grinding gearbox |
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| CN (1) | CN210510193U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439980A (en) * | 2019-09-10 | 2019-11-12 | 南京高精齿轮集团有限公司 | A kind of planet cement grinding mill gear-box |
-
2019
- 2019-09-10 CN CN201921498176.9U patent/CN210510193U/en active Active
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110439980A (en) * | 2019-09-10 | 2019-11-12 | 南京高精齿轮集团有限公司 | A kind of planet cement grinding mill gear-box |
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Effective date of registration: 20200511 Address after: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210012 Patentee after: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. Address before: No. 79 Jianheng Road, Jiangning District, Nanjing City, Jiangsu Province, 210012 Co-patentee before: Nanjing High Precision Transmission Equipment Manufacturing Group Co., Ltd. Patentee before: NANJING HIGH-SPEED & ACCURATE GEAR GROUP Co.,Ltd. |