Self-aligning planetary gear structure

Abstract

The utility model discloses a self-aligning planetary gear structure, which relates to the technical field of planetary gear structures and comprises a gear carrier, a central shaft is arranged on one side of the gear carrier, a sun gear is arranged on the central shaft, a plurality of mounting grooves are formed in the gear carrier on the ring side of the central shaft, and the mounting grooves extend from the ring side of the gear carrier to the central shaft. Movable shafts are arranged at the multiple mounting grooves, the axial direction of the movable shafts is consistent with that of the center shaft, and planetary gears are arranged on the multiple movable shafts; the planetary gears are sleeved with gear rings. According to the utility model, the position of the movable shaft in the mounting groove is adjustable, so that the relative position of the movable shaft and the central shaft does not need to be accurately set in the production process, and the production efficiency and the product yield are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of planetary gear structures, in particular to a self-aligning planetary gear structure. Background Art

[0002] Planetary gears have a compact design and enable high torque transmission in a minimum of space. The simplest form of a planetary gear, the single-stage planetary gear, consists in principle of a sun gear, a plurality of planetary gears, a planetary gear carrier and an internal gear ring. The sun gear is rigidly connected to the internally meshing internal gear ring via each planetary gear used. In principle, the sun gear, the planetary gear carrier or the internal gear ring can be driven, driven or fixed. Depending on the required transmission ratio or reduction ratio, the planetary gear can include one or more planetary gear sets, also called planetary gear stages.

[0003] In the planetary gear structure in the prior art, each planetary gear is installed through a mounting shaft fixedly mounted on the planetary gear frame. Therefore, during production, it is necessary to accurately measure the distance between the mounting shaft and the axis of the sun gear. If an error occurs, it will cause problems in the matching between the planetary gear and the sun gear.

[0004] In view of this, a self-aligning planetary gear structure is urgently needed to reduce the requirement on production precision. Summary of the invention

[0005] In view of the problems existing in the prior art, the utility model solves the problems with the following technical structure.

[0006] In order to achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A self-aligning planetary gear structure, comprising: a gear frame, a central shaft is arranged on one side of the gear frame, a sun gear is arranged on the central shaft, a plurality of mounting grooves are opened on the central shaft ring side of the gear frame, and the mounting grooves extend from the gear frame ring side to the central shaft;

[0008] A plurality of the mounting grooves are each provided with a movable shaft, the axial direction of the movable shaft is consistent with the central axis, and a plurality of the movable shafts are each provided with a planetary gear;

[0009] A plurality of planetary gears are sleeved with gear rings.

[0010] A further feature is that

[0011] Suspension ends of the plurality of movable shafts are provided with baffles.

[0012] The baffle is arranged on the inner side of the gear ring.

[0013] A gasket is arranged on one side of the baffle plate close to the planetary gear.

[0014] A mounting seat is arranged on a side of the gear frame away from the planetary gears, and one end of each of the plurality of movable shafts abuts against the mounting seat.

[0015] A connector is arranged on one side of the gear rack away from the planetary gears, and the connector is arranged coaxially with the central axis.

[0016] The plurality of mounting grooves are evenly distributed around the circumference.

[0017] There are three installation slots.

[0018] One end opening of the mounting groove extends to the ring side of the gear rack.

[0019] The gear rack is arranged inside the gear ring.

[0020] The above structure of the utility model can achieve the following beneficial effects:

[0021] During installation, the sun gear is installed on the central shaft, and one end of multiple movable shafts are installed in the corresponding installation grooves respectively, and then the planetary gears are installed on the movable shafts, and the position of the movable shafts in the installation grooves is adjusted to make the planetary gears mesh with the sun gears, and then the gear rings are mounted on the sides of multiple gear ring rings. In this way, the assembly of the planetary gear structure is completed. Since the position of the movable shaft in the installation groove is adjustable, there is no need to accurately set the relative position of the movable shaft and the central shaft during the production process, thereby improving production efficiency and product yield. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] Figure 1 It is a structural schematic diagram of this embodiment;

[0023] Figure 2 Schematic diagram of the structure inside the gear ring in this embodiment;

[0024] Figure 3 It is a structural schematic diagram of the relevant structure of the gear rack in this embodiment;

[0025] Figure 4 This is a schematic diagram of the structure of the gear rack and the movable shaft in this embodiment;

[0026] Figure 5 It is a structural schematic diagram of another viewing angle of this embodiment.

[0027] In the figure: 1. gear rack; 11. mounting groove; 12. connector; 2. center shaft; 3. sun gear; 4. movable shaft; 5. planetary gear; 6. ring gear; 7. baffle; 8. gasket; 9. mounting seat. DETAILED DESCRIPTION

[0028] In order to enable those skilled in the art to better understand the solution of the utility model, the technical solution in the embodiment of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiment of the utility model. Obviously, the described embodiment is only a part of the embodiment of the utility model, not all of the embodiments. Based on the embodiment of the utility model, all other embodiments obtained by ordinary technicians in this field without creative work should fall within the scope of protection of the utility model.

[0029] It should be noted that the terms "including" and "having" and any variations thereof in the specification and claims of the present invention and the above-mentioned drawings are intended to cover non-exclusive inclusions. For example, a process, method, apparatus, product or equipment comprising a series of steps or units is not necessarily limited to those steps or units clearly listed, but may include other steps or units that are not clearly listed or inherent to these processes, methods, products or equipment.

[0030] The following is combined with Figure 1 -Attached Figure 5 This application is described in further detail.

[0031] refer to Figure 1-Figure 4 A self-aligning planetary gear structure shown in the figure comprises: a gear frame 1, a central shaft 2 is arranged on one side of the gear frame 1, a sun gear 3 is coaxially arranged on the central shaft 2, a plurality of mounting grooves 11 are opened on the ring side of the central shaft 2 of the gear frame 1, and the extension direction of the mounting grooves 11 is from the ring side of the gear frame 1 to the central shaft 2; a plurality of mounting grooves 11 are all provided with movable shafts 4, the axial direction of the movable shafts 4 is consistent with the central shaft 2, and a plurality of movable shafts 4 are coaxially arranged with planetary gears 5; a plurality of planetary gears 5 are sleeved with gear rings 6, and the planetary gears 5 are meshed with the gear rings 6 and the sun gear 3, so that when installing, the sun gears 5 are installed. The wheel 3 is installed on the central shaft 2, and one end of multiple movable shafts 4 is installed in the corresponding installation grooves 11 respectively, and then the planetary gear 5 is installed on the movable shaft 4, and the position of the movable shaft 4 in the installation groove 11 is adjusted to make the planetary gear 5 mesh with the sun gear 3, and then the ring gear 6 is sleeved on the ring side of multiple ring gears 6. In this way, the assembly of the planetary gear structure is completed. Since the position of the movable shaft 4 in the installation groove 11 is adjustable, the cooperation between the planetary gear 5 and the sun gear 3 is ensured. Therefore, there is no need to accurately set the relative position of the movable shaft 4 and the central shaft 2 during the production process, which improves production efficiency and product yield.

[0032] refer to Figure 2 As shown, in order to prevent the planetary gear 5 from moving axially during use, a baffle 7 is provided at the suspension end of the multiple movable shafts 4, and a gasket 8 is provided on the side of the baffle 7 close to the planetary gear 5, so that the planetary gear 5 is limited by the baffle 7.

[0033] It is further optimized that in order to further improve the compactness of the planetary gear structure, the baffle 7 and the gear frame 1 are both arranged on the inner side of the ring gear 6. In this way, the baffle 7 and the ring side of the gear frame 1 are wrapped by the ring gear 6, making the planetary gear structure more compact, and the ring gear 6 also plays a role in protecting the internal structure.

[0034] refer to Figure 2 As shown, in order to limit the movable shaft 4, a mounting seat 9 is provided on the side of the gear frame 1 away from the planetary gear 5, and one end of multiple movable shafts 4 are all abutted against the mounting seat 9. In this way, not only can the movable shaft 4 be limited, but also the mounting seat 9 can be used to facilitate the installation and positioning of the planetary gear structure when in use.

[0035] refer to Figure 5 As shown, in order to facilitate use, the outside is connected to the planetary gear structure, and a connecting head 12 is provided on the side of the gear frame 1 away from the planetary gear 5. The connecting head 12 is coaxially arranged with the central axis 2. In this way, when in use, the external component is directly connected to the connecting head 12. In order to keep the external component and the connecting head 12 rotating synchronously, a hexagonal groove can be provided on the connecting head 12 for easy positioning and limiting.

[0036] Further optimization is that, in order to balance the forces on various components, multiple installation grooves 11 can be evenly distributed in a circle. In this embodiment, three installation grooves 11 are provided, and the number of installation grooves 11 can be adaptively adjusted during production according to usage requirements.

[0037] refer to Figure 1 As shown, one end of the installation groove 11 is opened and extends to the ring side of the gear frame 1, so that it is convenient to install and remove the movable shaft.

[0038] In summary, during installation, the sun gear 3 is installed on the central shaft 2, and one end of the multiple movable shafts 4 is installed in the corresponding installation grooves 11 respectively, and then the planetary gears 5 are installed on the movable shaft 4, and the position of the movable shaft 4 in the installation groove 11 is adjusted to make the planetary gears 5 mesh with the sun gear 3, and then the ring gear 6 is sleeved on the ring side of the multiple ring gears 6, so that the assembly of the planetary gear structure is completed. Since the position of the movable shaft 4 in the installation groove 11 is adjustable, it is not necessary to accurately set the relative position of the movable shaft 4 and the central shaft 2 during the production process, thereby improving the production efficiency and product yield;

[0039] The structure of the present application can be used as a reducer, and the power splitting principle is adopted to make each planetary gear 5 carry a smaller load, and the corresponding module of the planetary gear 5 is smaller. In addition, under the condition of uniform load, as the number of planetary gears 5 increases, the size of each planetary gear 5 can be reduced accordingly.

[0040] The above are only preferred embodiments of the present application, and the present invention is not limited to the above embodiments. It is understood that other improvements and changes directly derived or associated by those skilled in the art without departing from the spirit and concept of the present invention should be considered to be included in the protection scope of the present invention.

Claims

1. A self-aligning planetary gear structure, characterized in that: include: A gear rack (1), wherein a central shaft (2) is disposed on one side of the gear rack (1), and a sun gear (3) is disposed on the central shaft (2); the gear rack (1) is provided with a plurality of mounting grooves (11) on the ring side of the central shaft (2), and the mounting grooves (11) extend from the ring side of the gear rack (1) to the central shaft (2); A movable shaft (4) is disposed at each of the plurality of mounting grooves (11); the axial direction of the movable shaft (4) is consistent with the central axis (2); and a planetary gear (5) is disposed on each of the plurality of movable shafts (4); A gear ring (6) is sleeved on the plurality of planetary gears (5).

2. A self-aligning planetary gear structure according to claim 1, characterized in that: The suspension ends of the plurality of movable shafts (4) are provided with baffles (7).

3. A self-aligning planetary gear structure according to claim 2, characterized in that: The baffle (7) is arranged on the inner side of the gear ring (6).

4. A self-aligning planetary gear structure according to claim 2, characterized in that: A gasket (8) is provided on one side of the baffle (7) close to the planetary gear (5).

5. The self-aligning planetary gear structure according to claim 1, characterized in that: A mounting seat (9) is provided on the side of the gear rack (1) away from the planetary gear (5), and one end of each of the plurality of movable shafts (4) abuts against the mounting seat (9).

6. The self-aligning planetary gear structure according to claim 1, characterized in that: A connecting head (12) is provided on the side of the gear rack (1) away from the planetary gear (5), and the connecting head (12) is coaxially arranged with the central axis (2).

7. The self-aligning planetary gear structure according to claim 1, characterized in that: The plurality of mounting grooves (11) are evenly distributed around the circumference.

8. The self-aligning planetary gear structure according to claim 1, characterized in that: The number of the mounting grooves (11) is three.

9. The self-aligning planetary gear structure according to claim 1, characterized in that: One end opening of the mounting groove (11) extends to the ring side of the gear rack (1).

10. The self-aligning planetary gear structure according to claim 1, characterized in that: The gear rack (1) is arranged inside the gear ring (6).

Images