CN221145180U - Planetary gear reducer special for built-in ball mill - Google Patents
Planetary gear reducer special for built-in ball mill Download PDFInfo
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- CN221145180U CN221145180U CN202323385111.2U CN202323385111U CN221145180U CN 221145180 U CN221145180 U CN 221145180U CN 202323385111 U CN202323385111 U CN 202323385111U CN 221145180 U CN221145180 U CN 221145180U
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Abstract
The utility model relates to the technical field of speed reducers, in particular to a built-in planetary gear speed reducer special for a ball mill, which comprises a ball mill cylinder body and a fixed frame, wherein a ball mill bearing seat is fixed on the right side of the ball mill cylinder body; the high-speed planetary gear transmission mechanism comprises an input shaft, a high-speed sun gear, a front shell, a plurality of high-speed planetary gears, a high-speed annular gear and a high-speed planetary carrier; the input shaft is rotationally connected between the front shell and the anti-torque supporting structure and is connected with the motor through a coupler; solves the problems of large occupied space and low transmission efficiency of the existing ball mill reducer.
Description
Technical Field
The utility model relates to the technical field of speed reducers, in particular to a planetary gear speed reducer special for a built-in ball mill.
Background
The ball mill is one of the high-fine grinding machines widely used in industrial production, especially in the cement industry, the quality of the performance directly influences the quality and the production efficiency of products, and the speed reducer is used as a key component of the ball mill and plays a decisive role in the operation of the ball mill. The existing ball mill speed reducer is provided with an edge transmission gear box and a center transmission gear box, and hard tooth face gears are adopted for improving the bearing capacity of the ball mill speed reducer, but parallel shaft gears are adopted for transmission.
However, practice shows that the existing ball mill decelerator has the following problems: firstly, the size is large, and the ball mill is usually arranged outside the ball mill, so that the occupied space is large; secondly, the traditional parallel shaft gear transmission has relatively low bearing capacity, cannot meet the working condition requirements of low-speed running and large impact load of the ball mill, and causes the gear to easily generate failure phenomena such as tooth striking, tooth surface pitting and the like, so that the transmission efficiency is low.
Therefore, it is necessary to invent a planetary gear reducer special for a built-in ball mill to solve the above problems.
Disclosure of utility model
The utility model provides a planetary gear reducer special for a built-in ball mill, which aims to solve the problems of large occupied space and low transmission efficiency of the existing ball mill reducer.
The utility model is realized by adopting the following technical scheme:
The planetary gear reducer special for the built-in ball mill comprises a ball mill cylinder and a fixed frame, wherein a ball mill bearing seat is fixed on the right side of the ball mill cylinder, a motor is installed on the fixed frame, a high-speed planetary gear transmission mechanism and a low-speed planetary gear transmission mechanism are arranged in the ball mill cylinder, a reactive torque supporting structure is arranged in the ball mill bearing seat, and the reactive torque supporting structure is fixedly connected with the fixed frame;
The high-speed planetary gear transmission mechanism comprises an input shaft, a high-speed sun gear, a front shell, a plurality of high-speed planetary gears, a high-speed annular gear and a high-speed planetary carrier; the input shaft is rotationally connected between the front shell and the anti-torque supporting structure, the input shaft is connected with the motor through a coupler, the high-speed sun gear is fixed on the input shaft and meshed with each high-speed planetary gear, each high-speed planetary gear is supported on the high-speed planetary carrier through a high-speed planetary gear bearing and a high-speed planetary shaft, each high-speed planetary gear is meshed with the high-speed annular gear, and the high-speed annular gear is fixedly connected with the front shell;
The low-speed planetary gear transmission mechanism comprises a low-speed planetary carrier, a low-speed annular gear, a plurality of low-speed planetary gears and a low-speed sun gear; the low-speed sun gear is connected with the high-speed planetary carrier through a spline, each low-speed planetary gear is meshed with the low-speed sun gear, each low-speed planetary gear is supported on the low-speed planetary carrier through a low-speed planetary gear bearing and a low-speed planetary shaft, each low-speed planetary gear is meshed with the low-speed annular gear, the low-speed planetary carrier is rotationally connected inside the low-speed annular gear, the low-speed planetary carrier is fixedly connected with the reactive torque supporting structure, the high-speed annular gear is fixedly connected with the low-speed annular gear, and the low-speed annular gear is fixedly connected with the ball mill barrel.
Further, the left end of the input shaft is rotationally connected to the front casing through a cylindrical roller bearing I, and the right end of the input shaft is rotationally connected to the inside of the anti-torque supporting structure through a self-aligning roller bearing.
Further, the low-speed planetary carrier is rotationally connected to the inside of the low-speed annular gear through a cylindrical roller bearing II and a cylindrical roller bearing III.
The utility model has reasonable and reliable structural design, compact structure and small outline size, fully utilizes the internal space of the ball mill cylinder and the internal space of the ball mill bearing seat, and achieves the purposes of reducing the volume and saving the external space of the ball mill; meanwhile, the load among the planetary gears is uniformly distributed, the power is uniformly distributed, the stability and the shock resistance and vibration resistance of the speed reducer can be remarkably improved, and the problem of gear failure under special working conditions can be effectively avoided, so that the overall transmission efficiency and the service life of the speed reducer are improved.
Drawings
Fig. 1 is a schematic structural view of the present utility model.
In the figure: 1-high-speed sun gear, 2-cylindrical roller bearing I, 3-front shell, 4-high-speed planetary gear, 5-high-speed annular gear, 6-high-speed planetary gear bearing, 7-high-speed planetary shaft, 8-high-speed planetary carrier, 9-cylindrical roller bearing II, 10-low-speed planetary carrier, 11-low-speed annular gear, 12-low-speed planetary gear, 13-low-speed planetary gear bearing, 14-low-speed planetary shaft, 15-low-speed sun gear, 16-aligning roller bearing, 17-cylindrical roller bearing III, 18-anti-torque supporting structure, 19-ball mill barrel, 20-fixed frame, 21-ball mill bearing seat, 22-motor, 23-input shaft.
Detailed Description
The planetary gear reducer special for the built-in ball mill comprises a ball mill cylinder 19 and a fixed frame 20, wherein a ball mill bearing seat 21 is fixed on the right side of the ball mill cylinder 19, a motor 22 is installed on the fixed frame 20, a high-speed planetary gear transmission mechanism and a low-speed planetary gear transmission mechanism are arranged in the ball mill cylinder 19, a reactive torque supporting structure 18 is arranged in the ball mill bearing seat 21, and the reactive torque supporting structure 18 is fixedly connected with the fixed frame 20;
The high-speed planetary gear transmission mechanism comprises an input shaft 23, a high-speed sun gear 1, a front shell 3, a plurality of high-speed planetary gears 4, a high-speed annular gear 5 and a high-speed planetary carrier 8; the input shaft 23 is rotatably connected between the front casing 3 and the anti-torque supporting structure 18, the input shaft 23 is connected with the motor 22 through a coupler, the high-speed sun gear 1 is fixed on the input shaft 23 and meshed with each high-speed planetary gear 4, each high-speed planetary gear 4 is supported on the high-speed planetary carrier 8 through the high-speed planetary gear bearing 6 and the high-speed planetary shaft 7, each high-speed planetary gear 4 is meshed with the high-speed annular gear 5, and the high-speed annular gear 5 is fixedly connected with the front casing 3;
The low-speed planetary gear transmission mechanism comprises a low-speed planetary carrier 10, a low-speed annular gear 11, a plurality of low-speed planetary gears 12 and a low-speed sun gear 15; the low-speed sun gear 15 is connected with the high-speed planetary carrier 8 through splines, each low-speed planetary wheel 12 is meshed with the low-speed sun gear 15, each low-speed planetary wheel 12 is supported on the low-speed planetary carrier 10 through a low-speed planetary wheel bearing 13 and a low-speed planetary shaft 14, each low-speed planetary wheel 12 is meshed with the low-speed annular gear 11, the low-speed planetary carrier 10 is rotatably connected inside the low-speed annular gear 11, the low-speed planetary carrier 10 is fixedly connected with the anti-torque supporting structure 18, the high-speed annular gear 5 is fixedly connected with the low-speed annular gear 11, and the low-speed annular gear 11 is fixedly connected with the ball mill barrel 19.
The combined structure design of the high-speed planetary gear transmission mechanism, the low-speed planetary gear transmission mechanism and the anti-torque support structure 18 not only has compact structure and small outline size, but also fully utilizes the internal space of the ball mill cylinder 19 and the internal space of the ball mill bearing seat 21, and the speed reducer is internally arranged in the ball mill cylinder, thereby realizing the purposes of reducing the volume and saving the external space of the ball mill; the high-speed planetary gears 4 are uniformly distributed between the high-speed sun gear 1 and the high-speed annular gear 5, so that inertia forces acting on the high-speed sun gear 1 and the high-speed planetary gear bearing 6 can be balanced, and meanwhile, the low-speed planetary gears 12 are uniformly distributed between the low-speed sun gear 15 and the low-speed annular gear 11, so that inertia forces acting on the low-speed sun gear 15 and the low-speed planetary shaft 14 can be balanced, and the overall transmission efficiency of the speed reducer is improved; in addition, the load between each high-speed planetary gear 4 in the high-speed planetary gear transmission mechanism and the load between each low-speed planetary gear 12 in the low-speed planetary gear transmission mechanism are uniformly distributed and the power is uniformly split, so that the stability and the shock resistance and vibration resistance of the speed reducer can be remarkably improved, the problem of gear failure under special working conditions can be effectively avoided, and the overall performance and the service life of the speed reducer are improved; the reactive torque support structure 18 plays an important supporting role in the speed reducer, and counteracts reactive torque generated by power transmission in operation, so that the running stability of the speed reducer is ensured.
When the planetary gear mechanism works, the motor 22 drives torque to be transmitted to the high-speed sun gear 1 through the input shaft 23, then to be transmitted to the high-speed planetary carrier 8 through the high-speed planetary gear 4 and the high-speed planetary shaft 7, then to be transmitted to the low-speed sun gear 15 through the high-speed planetary carrier 8, and then to be transmitted to the low-speed annular gear 11 through the low-speed sun gear 15, so that two-stage power transmission of the high-speed planetary gear mechanism and the low-speed planetary gear mechanism is completed, the torque is increased, and the rotating speed is reduced; finally, the low-speed-level annular gear 11 transmits the increased torque to the ball mill cylinder 19, so that the power transmission of the speed reducer is completed; solves the problems of large occupied space and low transmission efficiency of the existing ball mill reducer.
As shown in fig. 1, the left end of the input shaft 23 is rotatably connected to the front housing 3 through a cylindrical roller bearing i 2, and the right end of the input shaft 23 is rotatably connected to the inside of the anti-torque support structure 18 through a self-aligning roller bearing 16.
The structural design of the cylindrical roller bearing I2 plays a role in supporting the input shaft 23, and simultaneously reduces the friction force between the input shaft 23 and the front shell 3, so that the energy loss is reduced, and the transmission efficiency is improved; the structural design of the aligning roller bearing 16 not only can effectively reduce the friction force between the input shaft 23 and the anti-torque supporting structure 18, but also has the capability of adjusting the axis deviation, can accommodate and adjust the tiny change or deviation of the axis, and ensures that the input shaft 23 always keeps good centering in the running process, thereby ensuring the normal running and stability of the high-speed planetary gear transmission mechanism.
As shown in fig. 1, the low-speed planetary carrier 10 is rotatably connected to the inside of the low-speed ring gear 11 through a cylindrical roller bearing ii 9 and a cylindrical roller bearing iii 17.
In the description of the present utility model, it should be understood that the orientation or positional relationship indicated is based on the orientation or positional relationship shown in the drawings, and is merely for convenience in describing the present utility model and simplifying the description, and does not indicate or imply that the apparatus or element referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present utility model.
Although embodiments of the present utility model have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made therein without departing from the principles and spirit of the utility model, the scope of which is defined in the appended claims and their equivalents.
Claims (3)
1. The utility model provides a special planetary gear reducer of built-in ball mill, includes ball mill barrel (19), fixed frame (20), and ball mill barrel (19) right side is fixed with ball mill bearing frame (21), installs motor (22), its characterized in that on fixed frame (20): the ball mill is characterized in that a high-speed planetary gear transmission mechanism and a low-speed planetary gear transmission mechanism are arranged in the ball mill cylinder (19), a reactive torque supporting structure (18) is arranged in the ball mill bearing seat (21), and the reactive torque supporting structure (18) is fixedly connected with a fixed frame (20);
The high-speed planetary gear transmission mechanism comprises an input shaft (23), a high-speed sun gear (1), a front shell (3), a plurality of high-speed planetary gears (4), a high-speed annular gear (5) and a high-speed planetary carrier (8); the input shaft (23) is rotationally connected between the front shell (3) and the anti-torque supporting structure (18), the input shaft (23) is connected with the motor (22) through a coupler, the high-speed sun gear (1) is fixed on the input shaft (23) and is meshed with each high-speed planetary gear (4), each high-speed planetary gear (4) is supported on the high-speed planetary carrier (8) through the high-speed planetary gear bearing (6) and the high-speed planetary shaft (7), each high-speed planetary gear (4) is meshed with the high-speed annular gear (5), and the high-speed annular gear (5) is fixedly connected with the front shell (3);
The low-speed planetary gear transmission mechanism comprises a low-speed planetary carrier (10), a low-speed annular gear (11), a plurality of low-speed planetary gears (12) and a low-speed sun gear (15); the low-speed sun gear (15) is connected with the high-speed planetary carrier (8) through a spline, each low-speed planetary gear (12) is meshed with the low-speed sun gear (15), each low-speed planetary gear (12) is supported on the low-speed planetary carrier (10) through a low-speed planetary gear bearing (13) and a low-speed planetary shaft (14), each low-speed planetary gear (12) is meshed with the low-speed annular gear (11), the low-speed planetary carrier (10) is rotationally connected to the inside of the low-speed annular gear (11), the low-speed planetary carrier (10) is fixedly connected with the reactive torque supporting structure (18), the high-speed annular gear (5) is fixedly connected with the low-speed annular gear (11), and the low-speed annular gear (11) is fixedly connected with the ball mill barrel (19).
2. The planetary gear reducer special for a built-in ball mill according to claim 1, wherein: the left end of the input shaft (23) is rotatably connected to the front casing (3) through a cylindrical roller bearing I (2), and the right end of the input shaft (23) is rotatably connected to the inside of the anti-torque supporting structure (18) through a self-aligning roller bearing (16).
3. The planetary gear reducer special for a built-in ball mill according to claim 1, wherein: the low-speed planetary carrier (10) is rotatably connected to the inside of the low-speed annular gear (11) through a cylindrical roller bearing II (9) and a cylindrical roller bearing III (17).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323385111.2U CN221145180U (en) | 2023-12-12 | 2023-12-12 | Planetary gear reducer special for built-in ball mill |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202323385111.2U CN221145180U (en) | 2023-12-12 | 2023-12-12 | Planetary gear reducer special for built-in ball mill |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN221145180U true CN221145180U (en) | 2024-06-14 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202323385111.2U Active CN221145180U (en) | 2023-12-12 | 2023-12-12 | Planetary gear reducer special for built-in ball mill |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN221145180U (en) |
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2023
- 2023-12-12 CN CN202323385111.2U patent/CN221145180U/en active Active
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