Planetary transmission floating structure

Abstract

The utility model discloses a kind of planetary transmission floating structures, it is related to planetary gear transmission technical field, including first box, second box and inner ring gear. First box and second box form gear box box, and first box is equipped with inner tooth;Inner ring gear is located between first box and second box, and inner ring gear is equipped with the outer tooth of the inner tooth of first box meshing, and inner ring gear is connected with first box by inner tooth and outer tooth. Among them, the end surface of one side of inner ring gear is equipped with support floating element between first box, and the end surface of other side of inner ring gear is equipped with elastic element between second box. The above-mentioned planetary transmission floating structure, compact structure, inner ring gear is connected by the cooperation of outer tooth and inner tooth, realizes inner gear and first box, ensures that inner ring gear has certain floating, by setting support floating element and elastic element, so that inner ring gear can produce eccentric swing floating, relative to plane support, more conducive to inner ring gear swing, improve the floating uniform load performance of inner ring gear.

Description

Technical Field

[0001] This utility model relates to the field of planetary gear transmission technology, and in particular to a floating structure for planetary transmission. Background Technology

[0002] A planetary gearbox is a mechanism consisting of multiple planetary gears rotating around a sun gear. It is primarily used to reduce transmission speed and increase motor torque, and is widely used in industries such as building materials, thermal power, and nuclear power. A large proportion of planetary gearboxes adopt the NGW planetary transmission structure. Due to the characteristics of the planetary structure, there is a certain degree of load unevenness between the planetary gears and the sun gear, and between the planetary gears and the internal ring gear. This is related to the machining accuracy of the components and the compensation of the assembly structure. To achieve uniform load distribution among the planetary components, methods such as improving the dimensional accuracy of the components, pre-shaping according to the load, and setting floating components can be used. Relatively speaking, setting effective and reliable floating components while ensuring that the machining accuracy of each component remains unchanged is a more economical and feasible method.

[0003] Existing planetary transmission floating structures mostly employ floating sun gears or planet carriers, and planet gear shafts use flexible pins. However, since the internal gear ring is fixed to the housing, traditional floating solutions require thin-walled gear rings or suspension structures, which occupy a large space and are difficult to adapt to compact design requirements.

[0004] Therefore, there are still shortcomings and deficiencies in the existing technology. How to provide a planetary transmission floating structure with a compact structure and good floating load-sharing performance is a technical problem that urgently needs to be solved by those skilled in the art. Utility Model Content

[0005] The purpose of this invention is to provide a planetary transmission floating structure that solves the technical problem that traditional floating schemes in the prior art occupy a large space and are difficult to adapt to compact design requirements.

[0006] To achieve the above objectives, this utility model provides a planetary transmission floating structure, comprising:

[0007] A first housing and a second housing, the first housing and the second housing forming a gearbox housing, the first housing having internal teeth;

[0008] An internal gear ring is disposed between the first housing and the second housing. The internal gear ring has external teeth that mesh with the internal teeth of the first housing. The internal gear ring is connected to the first housing through the internal teeth and the external teeth.

[0009] The internal gear ring has a supporting floating member between one end face and the first housing, and an elastic member between the other end face and the second housing.

[0010] Preferably, the first housing is provided with an annular step, and the supporting floating member is disposed on the annular step.

[0011] Preferably, the supporting floating component is a spherical pad, and the cross-section of the spherical pad that abuts against the end face of the internal gear ring is arc-shaped.

[0012] Preferably, a gap is provided between the end face of the internal gear ring near the second housing and the second housing.

[0013] Preferably, the elastic element is a spring.

[0014] Preferably, the second housing has multiple limiting holes on the side near the internal gear ring, and the multiple limiting holes are distributed in a circular array.

[0015] Preferably, the limiting hole is a through hole, the elastic element is disposed in the through hole, one end of the elastic element abuts against the end face of the internal gear ring, and the other end of the elastic element is fixed by the limiting element.

[0016] Preferably, the limiting member is a pressure plate fixedly disposed on the second housing, and the end of the elastic member away from the internal gear ring abuts against the pressure plate.

[0017] Preferably, the limiting hole is a blind hole, one end of the elastic element abuts against the internal gear ring, and the other end of the elastic element abuts against the inner wall of the limiting element.

[0018] Preferably, the first housing and the second housing are connected by fasteners.

[0019] Compared to the aforementioned background technology, the planetary transmission floating structure provided by this utility model has a compact structure. The internal gear ring connects to the first housing through the engagement of its outer teeth with the inner teeth of the first housing, ensuring that the internal gear ring has a certain degree of floating. A supporting floating element is provided between one end face of the internal gear ring and the first housing, and an elastic element is provided between the other end face of the internal gear ring and the second housing, enabling the internal gear ring to oscillate and float. Compared to planar support, this is more conducive to the oscillation of the internal gear ring, thereby more effectively achieving floating load distribution and improving the floating load distribution performance of the internal gear ring. Attached Figure Description

[0020] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on the provided drawings without creative effort.

[0021] Figure 1This is a structural cross-sectional view of the planetary transmission floating structure for a vertical planetary gearbox provided in an embodiment of the present invention.

[0022] Figure 2 This is a cross-sectional view of the planetary transmission floating structure for a horizontal planetary gearbox provided in an embodiment of the present invention.

[0023] Figure 3 This is a cross-sectional schematic diagram of the supporting floating component in the planetary transmission floating structure provided in this embodiment of the utility model;

[0024] Figure 4 This is a schematic diagram of the second housing and the elastic element in the planetary transmission floating structure provided in this embodiment of the present invention.

[0025] Figures 1 to 4 Chinese reference numerals: 10, first housing; 101, annular step; 20, second housing; 201, limiting hole; 30, internal gear ring; 40, supporting floating component; 50, elastic component; 60, limiting component; 70, fastener. Detailed Implementation

[0026] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0027] To enable those skilled in the art to better understand the present invention, the present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0028] This invention provides a planetary transmission floating structure that is compact, occupies little space, and has good floating load-sharing performance of the internal gear ring 30.

[0029] Please refer to this as well. Figures 1 to 4 The planetary transmission floating structure provided by this utility model includes a first housing 10, a second housing 20, and an internal gear ring 30.

[0030] The first housing 10 and the second housing 20 form the gearbox housing, which provides support, sealing, and protection to ensure the stable operation of the internal mechanical parts. The first housing 10 is equipped with internal gears. The gearbox housing can integrate and install sun gears and planet gears. The sun gear is the main gear located at the center and is used to connect to the input shaft. The planet gears are multiple small gears distributed around the sun gear, which are fixed by planet carriers and rotate synchronously.

[0031] The internal gear ring 30 is one of the core components of the planetary gear transmission system. It refers to the internal gear coaxial with the planet carrier, which realizes power transmission and speed change functions through meshing with the planet gears. Its structure is usually a hollow ring structure with teeth on the inner wall. The internal gear ring 30 is located between the first housing 10 and the second housing 20. The internal gear ring 30 has external teeth that mesh with the internal teeth of the first housing 10. The internal gear ring 30 is connected to the first housing 10 through the internal and external teeth.

[0032] Among them, a supporting floating member 40 is provided between one end face of the internal gear ring 30 and the first housing 10, and an elastic member 50 is provided between the other end face of the internal gear ring 30 and the second housing 20.

[0033] The planetary transmission floating structure provided by this utility model is compact. By using a single-sided support for the floating component 40 and elastic compensation from the elastic component 50, it eliminates the need for a traditional long-arm flexible structure, saving space. The internal gear ring 30 connects to the first housing 10 through the engagement of its outer teeth with the inner teeth of the first housing 10. This arrangement ensures that the internal gear ring 30 has a certain degree of floating capability. A supporting floating component 40 is provided between one end face of the internal gear ring 30 and the first housing 10, and an elastic component 50 is provided between the other end face of the internal gear ring 30 and the second housing 20. This allows the internal gear ring 30 to oscillate and float. Compared to planar support, this is more conducive to the oscillation of the internal gear ring 30, thereby more effectively achieving floating load distribution and improving the floating load distribution performance of the internal gear ring 30.

[0034] It should be noted that the planetary transmission floating structure provided by this utility model can be used in both vertical and horizontal planetary gearboxes. When used in a vertical planetary gearbox, the first housing 10 and the second housing 20 are distributed vertically, while when used in a horizontal planetary gearbox, the first housing 10 and the second housing 20 are distributed horizontally.

[0035] Please refer to this as well. Figures 1 to 4 The first box 10 is provided with an annular step 101, and the floating support 40 is provided on the annular step 101.

[0036] Please refer to this as well. Figures 1 to 4 The supporting floating component 40 is a spherical pad. The side of the spherical pad that abuts against the end face of the internal gear ring 30 has an arc-shaped cross section, while the side of the spherical pad that abuts against the annular step 101 of the first housing 10 is a flat surface.

[0037] By setting a spherical pad to support the internal gear ring 30 and allowing the internal gear ring 30 to swing, the floating performance of the internal gear ring 30 is improved through the cooperation of the spherical pad and the elastic element 50.

[0038] Please refer to this as well. Figures 1 to 4A gap is provided between the end face of the internal gear ring 30 near the second housing 20 and the second housing 20. Due to the presence of the elastic element 50, the gap can have a larger tolerance, which can reduce the gap control accuracy requirements and make the processing, manufacturing and assembly more convenient while ensuring the floating load-sharing performance of the internal gear ring 30.

[0039] In this embodiment, the elastic element 50 is a spring.

[0040] Please refer to this as well. Figures 1 to 4 The second housing 20 has multiple limiting holes 201 on the side near the internal gear ring 30, and the multiple limiting holes 201 are distributed in a circular array.

[0041] In one embodiment, please refer to the following: Figures 1 to 4 The limiting hole 201 is a through hole, and the elastic element 50 is provided in the through hole. One end of the elastic element 50 abuts against the end face of the internal gear ring 30, and the other end of the elastic element 50 is fixed by the limiting element 60.

[0042] Please refer to this as well. Figures 1 to 4 The limiting member 60 is a pressure plate fixedly installed in the second housing 20, and the end of the elastic member 50 away from the internal gear ring 30 abuts against the pressure plate.

[0043] Specifically, the pressure plate is located on the side of the limiting hole 201 away from the internal gear ring 30. The pressure plate can be fixed to the second housing 20 by bolts or screws. The pressure plate and the elastic element 50 are used to limit and fix the elastic element 50. Thus, through the cooperation of the supporting floating element 40 and the elastic element 50, the internal gear ring 30 has good floating load-sharing performance.

[0044] In another embodiment, the limiting hole 201 is a blind hole, one end of the elastic member 50 abuts against the internal gear ring 30, and the other end of the elastic member 50 abuts against the inner wall of the limiting hole 201. The elastic member 50 is limited and fixed by the abutment between the inner wall of the limiting hole 201 and the elastic member 50, thereby enabling the internal gear ring 30 to have better floating load-sharing performance through the cooperation of the supporting floating member 40 and the elastic member 50.

[0045] Please refer to this as well. Figures 1 to 4 The first housing 10 and the second housing 20 are connected by fasteners 70, which can be fastening bolts or fastening screws, etc., and are not specifically limited.

[0046] There are multiple fasteners 70, which are evenly distributed along the connection between the first housing 10 and the second housing 20. This arrangement ensures that the load borne by each fastener 70 connecting the first housing 10 and the second housing 20 is relatively uniform, avoiding the situation where some fasteners 70 are overloaded while other fasteners 70 do not play their full role, thereby improving the overall connection strength and ensuring the stability and safety of the connection.

[0047] The planetary transmission floating structure provided by this utility model can be used in both vertical and horizontal planetary gearboxes, offering strong versatility and adaptability to different working conditions. The internal gear ring 30 connects to the first gearbox 10 through the engagement of its outer teeth with the inner teeth of the first gearbox 10, ensuring a certain degree of floating capability. A supporting floating element 40 is provided between one end face of the internal gear ring 30 and the first gearbox 10, while an elastic element 50 is provided between the other end face of the internal gear ring 30 and the second gearbox 20. This allows the internal gear ring 30 to oscillate and float, which is more conducive to the oscillation of the internal gear ring 30 compared to planar support, thereby more effectively achieving floating load distribution and improving the floating load distribution performance of the internal gear ring 30.

[0048] It should be noted that in this specification, relational terms such as first and second are used only to distinguish one entity from several other entities, and do not necessarily require or imply any such actual relationship or order between these entities.

[0049] This article uses specific examples to illustrate the principles and implementation methods of this utility model. The descriptions of the above embodiments are only for the purpose of helping to understand the method and core ideas of this utility model. It should be noted that for those skilled in the art, several improvements and modifications can be made to this utility model without departing from the principles of this utility model, and these improvements and modifications also fall within the protection scope of this utility model.

Claims

1. A planetary transmission floating structure, characterized in that, include: A first housing (10) and a second housing (20) form a gearbox housing, wherein the first housing (10) and the second housing (20) are provided with internal teeth; An internal gear ring (30) is disposed between the first housing (10) and the second housing (20). The internal gear ring (30) has external teeth that mesh with the internal teeth of the first housing (10). The internal gear ring (30) is connected to the first housing (10) through the internal teeth and the external teeth. Among them, a supporting floating member (40) is provided between one end face of the internal gear ring (30) and the first housing (10), and an elastic member (50) is provided between the other end face of the internal gear ring (30) and the second housing (20).

2. The planetary transmission floating structure according to claim 1, characterized in that, The first box (10) is provided with an annular step (101), and the supporting floating member (40) is provided on the annular step (101).

3. The planetary transmission floating structure according to claim 2, characterized in that, The supporting floating member (40) is a spherical pad, and the side of the spherical pad that abuts against the end face of the internal gear ring (30) has an arc-shaped cross section.

4. The planetary transmission floating structure according to claim 1, characterized in that, The end face of the internal gear ring (30) near the second housing (20) is provided with a gap between it and the second housing (20).

5. The planetary transmission floating structure according to claim 4, characterized in that, The elastic element (50) is a spring.

6. The planetary transmission floating structure according to claim 5, characterized in that, The second housing (20) has a plurality of limiting holes (201) on the side near the internal gear ring (30), and the plurality of limiting holes (201) are distributed in a circular array.

7. The planetary transmission floating structure according to claim 6, characterized in that, The limiting hole (201) is a through hole, and the elastic element (50) is provided in the through hole. One end of the elastic element (50) abuts against the end face of the internal gear ring (30), and the other end of the elastic element (50) is fixed by the limiting element (60).

8. The planetary transmission floating structure according to claim 7, characterized in that, The limiting member (60) is a pressure plate fixedly disposed on the second housing (20), and the end of the elastic member (50) away from the internal gear ring (30) abuts against the pressure plate.

9. The planetary transmission floating structure according to claim 6, characterized in that, The limiting hole (201) is a blind hole. One end of the elastic element (50) abuts against the internal gear ring (30), and the other end of the elastic element (50) abuts against the inner wall of the limiting hole (201).

10. The planetary transmission floating structure according to claim 1, characterized in that, The first housing (10) and the second housing (20) are connected by fasteners (70).

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