Planetary reducer and greenhouse curtain rolling machine

Abstract

The utility model discloses a planetary reducer and a greenhouse roller shutter machine, and belongs to the technical field of reducers, the planetary reducer comprises a three-stage planetary gear train, the inner side of a first sleeve is provided with a first inner gear ring which can be respectively meshed with a first planetary gear and a second sun gear; a second inner gear ring meshed with the second sun gear is arranged on the gear sleeve; the inner side of the second sleeve is provided with a third inner gear ring engaged with the multiple third planet gears. The first inner gear ring adopts positive displacement, the second inner gear ring adopts negative displacement, and the tooth number of the first inner gear ring is larger than that of the second inner gear ring. Through three-stage speed reduction, namely differential tooth arrangement of the first planetary gear train, the second inner gear ring and the first inner gear ring and the third planetary gear train, a large reduction ratio and large torque can be achieved, the overall structure is compact and small, the required power of a power source is small, and practicability is good. The motor serves as a power source, torque is output through the output flange, rotation of the roller shutter sleeve is achieved, and therefore the heat preservation curtain can be rolled and unrolled conveniently and rapidly.

Description

Technical Field

[0001] The utility model belongs to the technical field of speed reducers, and specifically relates to a planetary speed reducer greenhouse shutter machine. Background Art

[0002] A speed reducer is commonly used as a speed reduction transmission device between a prime mover and a working machine. It plays a role in matching the rotational speed and transmitting torque between the prime mover and the working machine or actuator. It is a relatively precise machine and is widely used in modern machinery. The purpose of using it is to reduce the speed and increase the torque.

[0003] There are many types and models of speed reducers, and different types have different uses. There are many types of speed reducers. According to the transmission type, they can be divided into gear speed reducers, worm speed reducers, and planetary gear speed reducers; according to the number of transmission stages, they can be divided into single-stage and multi-stage speed reducers; according to the gear shape, they can be divided into cylindrical gear speed reducers, bevel gear speed reducers, and bevel-cylindrical gear speed reducers; according to the transmission layout form, they can also be divided into expansion type speed reducers, split type speed reducers, and coaxial type speed reducers.

[0004] At present, greenhouse applications are becoming more and more widespread. For high-temperature greenhouses used in winter, a heat preservation curtain needs to be laid on the greenhouse film for heat preservation. The core component of the shutter machine for winding the heat preservation curtain is a speed reduction box, which has a box body, a power input shaft, and a power output shaft. A sleeve for winding the heat preservation curtain is installed on the power output shaft, and the winding and unwinding of the heat preservation curtain are realized through the rotation of the sleeve.

[0005] For the existing speed reduction box of the greenhouse heat preservation curtain shutter machine, in order to meet a large reduction ratio and large torque, the shutter machine speed reduction box is generally designed to be large in volume, and the power motor power requirement is high. It is integrally installed on the top of the greenhouse, and the disassembly and installation are very inconvenient, affecting normal use. Summary of the Utility Model

[0006] In order to solve the problem that the traditional speed reducer cannot well balance a small volume, a large reduction ratio, and a large torque, the utility model provides a planetary speed reducer and a greenhouse shutter machine.

[0007] On the one hand, the utility model is realized through the following technical solutions:

[0008] A planetary reducer comprises a first sleeve, a second sleeve and a protective cover which are connected and installed in sequence, and also comprises a second sun gear shaft, a third sun gear shaft and an output shaft which are rotatably connected and installed in sequence, and the output shaft is rotatably installed through the middle part of the protective cover; a first frame is rotatably mounted on the second sun gear shaft, and a plurality of first planetary gears and second planetary gears are rotatably mounted on both sides of the first frame; a plurality of first planetary gears are meshed with a first sun gear which can be connected to a power source, and a second sun gear which is meshed with a plurality of second planetary gears is mounted on the second sun gear shaft; a plurality of first planetary gears are meshed with a first sun gear which can be connected to a power source, and a plurality of second planetary gears are meshed with a second sun gear which is meshed with a plurality of second planetary gears; a plurality of first planetary gears are meshed with a first sun gear which can be connected to a plurality of first planetary gears on the inner side of the first sleeve The star gear and the first inner gear ring are respectively meshed with several second sun gears; the third sun gear shaft is mounted with a gear sleeve and a third sun gear, the third sun gear shaft is rotatably mounted with a third frame, and the output shaft is mounted with a fourth frame; the gear sleeve is provided with a second inner gear ring meshed with several second sun gears; several third planetary gears meshed with the third sun gear are rotatably connected and installed between the third frame and the fourth frame; the inner side of the second sleeve is provided with a third inner gear ring meshed with several third planetary gears; the first inner gear ring adopts positive displacement, the second inner gear ring adopts negative displacement, and the number of teeth of the first inner gear ring is greater than the number of teeth of the second inner gear ring.

[0009] A further improvement of the utility model is that the first planetary gear is rotatably mounted on the first frame via the first planetary gear shaft, the second planetary gear is rotatably mounted on the first frame via the second planetary gear shaft, and the second sun gear shaft is rotatably mounted with a second frame connected to the second planetary gear shaft.

[0010] A further improvement of the utility model is that a limiting boss is provided at one end of the first planetary gear shaft away from the first frame.

[0011] A further improvement of the utility model is that a first bearing is provided between the third sun gear shaft and the third frame.

[0012] A further improvement of the utility model is that a second bearing is arranged between the protective cover and the output shaft.

[0013] A further improvement of the utility model is that the third planetary gear is rotatably connected and installed with the third frame and the fourth frame respectively through the third planetary gear shaft.

[0014] Another aspect of the utility model is achieved through the following technical solutions:

[0015] A greenhouse rolling machine comprises a motor, an output flange and the planetary reducer; the motor output shaft is drivingly connected to the first sun gear, the output flange is connected and installed to the output shaft, and a rolling sleeve is connected to the output flange.

[0016] A further improvement of the utility model is that a positioning cylinder for positioning and installing on the top of the greenhouse is connected and installed on the second sleeve.

[0017] A further improvement of the present utility model is that rib plates connected to the second sleeve are provided on both sides of the positioning cylinder.

[0018] As can be seen from the above technical solutions, the beneficial effects of the present utility model are as follows:

[0019] During use, the first sleeve, the second sleeve and the protective cover are fixedly installed. The first sun gear is driven to rotate by a power source, driving the first frame to rotate, driving a plurality of second planet gears to rotate under the meshing of the second sun gear and the first internal gear ring. Since the first internal gear ring and the second internal gear ring are respectively meshed with the front and rear parts of the outer side of the second planet gear, and the first internal gear ring uses positive modification and the second internal gear ring uses negative modification, and the number of teeth of the first internal gear ring is greater than that of the second internal gear ring, a larger reduction ratio and a larger torque can be achieved; the gear sleeve drives the third sun gear to rotate through the third sun gear shaft, and a plurality of third planet gears achieve synchronous rotation of the third frame and the fourth frame under the internal and external meshing of the third sun gear and the third internal gear ring, so as to output torque through the output shaft. Overall, through three-stage reduction (the first planetary gear train, the differential tooth setting of the second internal gear ring and the first internal gear ring, and the third planetary gear train), a larger reduction ratio and a larger torque can be achieved, and the overall structure is compact and small, with a lower power requirement for the power source and good practicability. Description of the Drawings

[0020] In order to more clearly illustrate the technical solutions of the present utility model, the drawings required for description will be briefly introduced below. Obviously, the drawings in the following description are only some embodiments of the present utility model. For those of ordinary skill in the art, other drawings can be obtained based on these drawings without creative efforts.

[0021] Figure 1 It is a schematic structural diagram of a greenhouse rolling machine according to a specific embodiment of the present utility model.

[0022] Figure 2 It is a schematic cross-sectional structural diagram of a greenhouse rolling machine according to a specific embodiment of the present utility model.

[0023] Figure 3 It is a schematic diagram of the cooperation between the first sun gear and the first planetary gear according to a specific embodiment of the present utility model.

[0024] Figure 4 It is a schematic internal first perspective structural diagram according to a specific embodiment of the present utility model.

[0025] Figure 5 It is a schematic internal second perspective structural diagram according to a specific embodiment of the present utility model.

[0026] In the accompanying drawings: 1. Motor; 2. First sleeve; 3. Second sleeve; 31. Positioning cylinder; 32. Rib plate; 4. Protective cover; 5. Output shaft; 6. First sun gear; 7. First planet gear; 8. First planet gear shaft; 9. First frame; 10. Second sun gear shaft; 11. Second sun gear; 12. Second planet gear; 13. Second planet gear shaft; 14. Gear sleeve; 15. Second frame; 16. Third sun gear shaft; 17. Third sun gear; 18. Third planet gear; 19. Third frame; 20. Third planet gear shaft; 21. Fourth frame; 22. First bearing; 23. Second bearing; 24. Output flange. Detailed implementation mode

[0027] In order to make the objectives, features, and advantages of the present utility model more obvious and understandable, the technical solutions in the present utility model will be clearly and completely described below in conjunction with the accompanying drawings in the specific embodiments of the present utility model. Obviously, the embodiments described below are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in this patent, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the scope of protection of this patent.

[0028] As Figure 4-5 shown, the present utility model discloses a planetary speed reducer, which includes a first sleeve 2, a second sleeve 3, and a protective cover 4 that are sequentially connected and installed from front to back. It also includes a second sun gear shaft 10, a third sun gear shaft 16, and an output shaft 5 that are sequentially rotatably connected and installed from front to back. The output shaft 5 rotates through and is installed in the middle of the protective cover 4. The front end of the second sun gear shaft 10 is rotatably sleeved with a first frame 9. Several first planet gears 7 and several second planet gears 12 are respectively rotatably connected and installed on the front and rear sides of the first frame 9. A first sun gear 6 that can be connected to a power source is meshed among several first planet gears 7. A second sun gear 11 that meshes with several second planet gears 12 (in the middle) is sleeved on the second sun gear shaft 10. A first internal gear ring that can respectively (simultaneously) mesh with several first planet gears 7 (on the outside) and several second sun gears 11 (on the outside) is provided inside the first sleeve 2. A gear sleeve 14 is sleeved on the front end of the third sun gear shaft 16, and a third sun gear 17 is sleeved on the rear end. A third frame 19 is rotatably sleeved in the middle of the third sun gear shaft 16. A fourth frame 21 is sleeved on the front end of the output shaft 5. A second internal gear ring that meshes with several second sun gears 11 (on the outside) is provided on the gear sleeve 14. Several third planet gears 18 that mesh with the third sun gear 17 (on the outside) are rotatably connected and installed between the third frame 19 and the fourth frame 21. A third internal gear ring that meshes with several third planet gears 18 (on the outside) is provided inside the second sleeve 3. The first internal gear ring adopts positive modification, the second internal gear ring adopts negative modification, and the number of teeth of the first internal gear ring is greater than the number of teeth of the second internal gear ring.

[0029] In use, the first sleeve 2, the second sleeve 3 and the protective cover 4 are fixedly installed. The first sun gear 6 is driven to rotate by a power source, driving the first frame 9 to rotate, driving a plurality of second planet gears 12 to rotate under the meshing of the second sun gear 11 and the first internal gear ring. Since the first internal gear ring and the second internal gear ring are respectively meshed with the front and rear parts of the outer side of the second planet gear 12, and the first internal gear ring uses positive modification and the second internal gear ring uses negative modification, and the number of teeth of the first internal gear ring is greater than that of the second internal gear ring, a large reduction ratio and a large torque can be achieved; the gear sleeve 14 drives the third sun gear 17 to rotate through the third sun gear shaft 16. A plurality of third planet gears 18 achieve the synchronous rotation of the third frame 19 and the fourth frame 21 under the internal and external meshing of the third sun gear 17 and the third internal gear ring, so as to output torque through the output shaft 5. Through three-stage deceleration (the first planetary gear train, the differential gear setting of the second internal gear ring and the first internal gear ring, and the third planetary gear train), a large reduction ratio and a large torque can be achieved, and the overall structure is compact and small, the power requirement for the power source is small, and the practicability is good. The fully sealed design further guarantees all-weather service for users.

[0030] Among them, the third sun gear 17 is integrally formed with the third sun gear shaft 16, and shaft holes are provided in the middle of both ends of the third sun gear shaft 16. The shaft hole at the front end is rotationally inserted and matched with the rear end of the second sun gear shaft 10. It is easy to form and easy to assemble.

[0031] Specifically, the number of the first planet gears 7 is three, the number of the second planet gears 12 is three, and the number of the third planet gears 18 is four. The first sun gear 6 has 13 teeth and a module of 2, the first planet gear 7 has 17 teeth and a module of 2, the second sun gear 11 has 13 teeth and a module of 2, the second planet gear 12 has 17 teeth and a module of 2, the first internal gear ring has 50 teeth and a module of 2, the second internal gear ring has 47 teeth and a module of 2, the third sun gear 17 has 13 teeth and a module of 3, the third planet gear 18 has 11 teeth and a module of 3, and the third internal gear ring has 40 teeth and a module of 3.

[0032] Among them, the first planet gear 7 is rotatably installed on the first frame 9 through the first planet gear shaft 8, the second planet gear 12 is rotatably installed on the first frame 9 through the second planet gear shaft 13, and a second frame 15 connected and installed with the second planet gear shaft 13 is rotatably sleeved on the second sun gear shaft 10. The third planet gear 18 is rotatably connected and installed with the third frame 19 and the fourth frame 21 respectively through the third planet gear shaft 20. Ensure the reliability and stability of the installation of the first planet gear 7, the second planet gear 12, and the third planet gear 18.

[0033] Among them, a limiting boss is provided at one end of the first planet gear shaft 8 away from the first frame 9. The first planet gear 7 is limited by the limiting boss.

[0034] Among them, a first bearing 22 is provided between the third sun gear shaft 16 and the third housing 19. A second bearing 23 is provided between the protective cover 4 and the output shaft 5. It realizes the reliable and precise rotational connection and installation between the third housing 19 and the third sun gear shaft 16, and realizes the reliable and precise rotational connection and installation between the output shaft 5 and the protective cover 4, ensuring the stability of power transmission.

[0035] As Figure 1-5 shown, the present utility model also discloses a greenhouse rolling machine, which includes a motor 1, an output flange 24 and the planetary reducer described above; the output shaft of the motor 1 is in transmission connection with the first sun gear 6, the output flange 24 is connected and installed with the output shaft 5, and a rolling curtain sleeve is connected to the output flange 24. A positioning cylinder 31 for positioning and installing on the top of the greenhouse is connected and installed on the second sleeve 3. The positioning of the second sleeve 3 on the top of the greenhouse is realized through the positioning cylinder 31. Taking the motor 1 as the power source and outputting torque through the output flange 24, the rotation of the rolling curtain sleeve is realized, thereby realizing the convenient rolling and unrolling of the heat preservation curtain. The fully enclosed design provides guarantee for the all-weather service of users.

[0036] Among them, reinforcing plates 32 connected to the second sleeve 3 are provided on both sides of the positioning cylinder 31. The connection between the positioning cylinder 31 and the second sleeve 3 is strengthened.

[0037] When the planetary reducer and the greenhouse rolling machine are in use, the first sleeve 2, the second sleeve 3 and the protective cover 4 are fixedly installed. The first sun gear 6 is driven to rotate by a power source, driving the first housing 9 to rotate, driving a plurality of second planetary gears 12 to rotate under the meshing of the second sun gear 11 and the first internal gear ring. Since the first internal gear ring and the second internal gear ring are respectively meshed with the front and rear parts (outer side) of the second planetary gear 12, and the first internal gear ring adopts positive modification and the second internal gear ring adopts negative modification, and the number of teeth of the first internal gear ring is greater than that of the second internal gear ring, a larger reduction ratio and a larger torque can be achieved; the gear sleeve 14 drives the third sun gear 17 to rotate through the third sun gear shaft 16, and a plurality of third planetary gears 18 realize the synchronous rotation of the third housing 19 and the fourth housing 21 under the internal and external meshing of the third sun gear 17 and the third internal gear ring, so as to output torque through the output shaft 5. The whole realizes three-stage deceleration (the first planetary gear train, the differential gear setting of the second internal gear ring and the first internal gear ring, and the third planetary gear train), can have a larger reduction ratio and a larger torque, and the overall structure is compact and small, and the power requirement for the power source is small, with good practicability. The positioning of the second sleeve 3 on the top of the greenhouse is realized through the positioning cylinder 31. Taking the motor 1 as the power source and outputting torque through the output flange 24, the rotation of the rolling curtain sleeve is realized, thereby realizing the convenient rolling and unrolling of the heat preservation curtain.

[0038] In this specification, the various embodiments are described in a progressive manner. Each embodiment focuses on the differences from other embodiments. For the same or similar parts among the various embodiments, reference can be made to each other.

[0039] Terms such as "upper", "lower", "outer side", "inner side", etc. in the description, claims and the above-mentioned drawings of the present utility model, if any, are used to distinguish the relative relationship in position and do not need to be given a qualitative definition. It should be understood that such used data can be interchanged under appropriate circumstances so that the embodiments of the present utility model described herein can be implemented in an order different from those illustrated or described herein. In addition, the terms "comprising" and "having" and any variations thereof are intended to cover non-exclusive inclusion.

[0040] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be obvious to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A planetary speed reducer, characterized in that, The invention comprises a first sleeve (2), a second sleeve (3) and a protective cover (4) which are connected and installed in sequence, and also comprises a second sun gear shaft (10), a third sun gear shaft (16) and an output shaft (5) which are rotatably connected and installed in sequence, wherein the output shaft (5) is rotatably installed through the middle part of the protective cover (4); a first frame (9) is rotatably mounted on the second sun gear shaft (10), and a plurality of first planetary gears (7) and second planetary gears (12) are rotatably mounted on both sides of the first frame (9); a plurality of first planetary gears (7) are meshed with a first sun gear (6) which can be connected to a power source, and a second sun gear (11) which is meshed with a plurality of second planetary gears (12) is mounted on the second sun gear shaft (10); a plurality of first planetary gears (7) are provided on the inner side of the first sleeve (2) with a plurality of first planetary gears (7) which can be connected to a power source; A first inner gear ring meshing with a plurality of second sun gears (11) respectively; a gear sleeve (14) and a third sun gear (17) are mounted on a third sun gear shaft (16); a third frame (19) is rotatably mounted on the third sun gear shaft (16); and a fourth frame (21) is mounted on the output shaft (5); a second inner gear ring meshing with a plurality of second sun gears (11) is provided on the gear sleeve (14); a plurality of third planetary gears (18) meshing with the third sun gear (17) are rotatably mounted between the third frame (19) and the fourth frame (21); a third inner gear ring meshing with a plurality of third planetary gears (18) is provided on the inner side of the second sleeve (3); the first inner gear ring adopts positive displacement, the second inner gear ring adopts negative displacement, and the number of teeth of the first inner gear ring is greater than the number of teeth of the second inner gear ring.

2. The planetary speed reducer according to claim 1, characterized in that, The first planetary gear (7) is rotatably mounted on the first frame (9) via a first planetary gear shaft (8), the second planetary gear (12) is rotatably mounted on the first frame (9) via a second planetary gear shaft (13), and a second frame (15) connected to and mounted on the second planetary gear shaft (13) is rotatably mounted on the second sun gear shaft (10).

3. The planetary speed reducer according to claim 2, characterized in that A limiting boss is provided at one end of the first planetary gear shaft (8) away from the first frame body (9).

4. The planetary speed reducer according to claim 1, wherein, A first bearing (22) is provided between the third sun gear shaft (16) and the third frame (19).

5. The planetary speed reducer according to claim 1, characterized in that A second bearing (23) is provided between the protective cover (4) and the output shaft (5).

6. The planetary speed reducer according to claim 1, characterized in that, The third planetary gear (18) is rotatably connected and installed with the third frame (19) and the fourth frame (21) respectively via the third planetary gear shaft (20).

7. A greenhouse rolling machine, characterized in that, It comprises a motor (1), an output flange (24) and a planetary reducer as claimed in any one of claims 1 to 6; the output shaft of the motor (1) is drivingly connected to the first sun gear (6), the output flange (24) is connected and installed to the output shaft (5), and a rolling shutter sleeve is connected to the output flange (24).

8. The greenhouse rolling machine according to claim 7, characterized in that, A positioning cylinder (31) for positioning and mounting on the top of a greenhouse is connected to the second sleeve (3).

9. The greenhouse rolling machine according to claim 8, wherein, Rib plates (32) connected to the second sleeve (3) are provided on both sides of the positioning cylinder (31).

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