CN111379840A

CN111379840A - Hollow rotating platform

Info

Publication number: CN111379840A
Application number: CN202010291673.2A
Authority: CN
Inventors: 刘尚柏; 黄求索; 邓青云
Original assignee: Guangdong Saini Intelligent Equipment Technology Co ltd
Current assignee: Guangdong Saini Intelligent Equipment Technology Co ltd
Priority date: 2020-04-14
Filing date: 2020-04-14
Publication date: 2020-07-07

Abstract

The application relates to the technical field of speed reducers, in particular to a hollow rotating platform which comprises an installation bottom plate, wherein the installation bottom plate is hollow in structure, the installation bottom plate is connected with a hollow shaft, the hollow shaft penetrates through the whole platform, and one side of the installation bottom plate is connected with a planetary speed reducing mechanism; the planetary reduction mechanism comprises a sun gear, a planetary wheel, an inner gear ring, a planetary rotating frame and an output flange, the planetary rotating frame is arranged on the output flange, the output flange and the planetary rotating frame are supported by a crossed roller bearing, the crossed roller bearing is fixedly connected with the inner gear ring and an installation bottom plate through bearing end pressure, and the sun gear comprises a small gear ring meshed with the planetary gear and a large gear ring meshed with an input gear shaft; the installation base is further installed on one side of the installation base plate, an entry gear shaft is connected to the installation base in a rotating mode, and the end portion of the entry gear shaft is integrally formed and provided with a key groove. The torque-bearing device has the advantages of high precision and large bearing torque.

Description

Hollow rotating platform

Technical Field

The application relates to the technical field of speed reducers, in particular to a hollow rotating platform.

Background

The high-precision hollow rotary platform is a high-precision platform providing rotary power, is used for installing mechanical parts needing to rotate, is widely applied to occasions such as mechanical arm joints, machine tool machining shafts and automatic production lines, and has a good using effect. The internal structure design of the existing hollow rotating platform is unreasonable, the precision is low, and the bearing torque is small, so that the existing planetary reducer needs to be structurally improved.

Content of application

In view of the above-mentioned deficiencies of the prior art, the present application aims to provide a hollow rotary platform, which has the advantages of high precision and large bearing torque.

The technical purpose of the application is realized by the following technical scheme: a hollow rotary platform comprises a mounting bottom plate, wherein the mounting bottom plate is hollow in structure, the mounting bottom plate is connected with a hollow shaft, the hollow shaft penetrates through the whole platform, and one side of the mounting bottom plate is connected with a planetary speed reducing mechanism;

the planetary reduction mechanism comprises a sun gear, a planetary gear meshed with the sun gear, an inner gear ring meshed with the planetary gear, a planetary rotating frame and an output flange, wherein the planetary rotating frame is rotatably connected to the planetary gear;

the installation structure is characterized in that an installation base is further installed on one side of the installation base plate, an input gear shaft coaxially connected with an output shaft of an external motor is connected in the installation base in a rotating mode, a key groove is formed in the end portion of the input gear shaft in an integrated mode, and the input gear shaft is meshed with a large gear ring on the sun gear.

Preferably, a carriage oil seal is mounted on the output flange.

Preferably, the mounting seat is a bearing chamber.

Preferably, a motor flange is installed on one side, far away from the installation bottom plate, of the installation seat.

Preferably, the cross section of the gear of the planetary reduction mechanism is arc-shaped.

To sum up, the beneficial effect that this application has: compared with a common gear, the planetary speed reducing mechanism has higher load, larger transmission ratio, simple and compact structure, the load of the planetary speed reducing mechanism is distributed on a plurality of teeth, the strength is large, the precision is high, the bearing torque is large, the power is input by an external motor, and then the power is transmitted to a large gear ring of the sun gear through the gear of the input gear shaft, as a small gear ring and the large gear ring of the sun gear are in an integrated structure, the small gear ring drives three planetary gears to rotate, then the planetary gears drive the planetary rotating frame to rotate, and meanwhile, the output flange rotates along with the planetary rotating frame to output the power; the key groove integrally formed at the end part of the input gear shaft greatly reduces the radius of the input gear shaft, so that the transmission ratio of the input gear shaft and the sun gear is larger, the structure of the hollow rotary platform is smaller and more compact, and the hollow rotary platform is convenient to install in other equipment, and the practicability and the application range of the hollow rotary platform are improved.

Drawings

FIG. 1 is a schematic diagram of the overall structure of an embodiment of the present application;

FIG. 2 is an exploded view of an embodiment of the present application;

fig. 3 is an exploded view of a planetary gear in the embodiment of the present application.

Reference numerals: 1. mounting a bottom plate; 2. a planetary reduction mechanism; 21. a sun gear; 211. a large gear ring; 212. a small gear ring; 22. an inner gear ring; 23. a planetary rotating stand; 231. a planetary gear; 2311. a pin shaft; 2312. an upper gasket; 2313. a planet wheel; 2314. positioning a pin; 2315. a lower gasket; 24. a hollow shaft; 25. an output flange; 26. a carriage oil seal; 27. end pressing of the bearing; 28. a bearing; 3. a mounting seat; 31. an input gear shaft; 4. and a motor flange.

Detailed Description

In order to make the technical problems, technical solutions and advantageous effects to be solved by the present application clearer, the present application is further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present application and are not intended to limit the present application.

It will be understood that when an element is referred to as being "secured to" or "disposed on" another element, it can be directly on the other element or be indirectly on the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

It will be understood that the terms "length," "width," "upper," "lower," "front," "rear," "left," "right," "vertical," "horizontal," "top," "bottom," "inner," "outer," and the like, refer to an orientation or positional relationship illustrated in the drawings for convenience in describing the present application and to simplify description, and do not indicate or imply that the referenced device or element must have a particular orientation, be constructed and operated in a particular orientation, and thus should not be construed as limiting the present application.

Furthermore, the terms "first", "second" and "first" are used for descriptive purposes only and are not to be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defined as "first" or "second" may explicitly or implicitly include one or more of that feature. In the description of the present application, "a plurality" means two or more unless specifically limited otherwise.

A hollow rotary platform, see fig. 1 to 3, comprises a mounting base plate 1, wherein the mounting base plate 1 is hollow, the mounting base plate 1 is connected with a hollow shaft 24, the hollow shaft 24 penetrates through the whole platform, and one side of the mounting base plate 1 is connected with a planetary reduction gear 2;

the planetary speed reducing mechanism 2 comprises a sun gear 21, a planetary gear 2313 meshed with the sun gear 21, an inner gear ring 22 meshed with the planetary gear 2313, a planetary rotating frame 23 and an output flange 25 which are rotatably connected to the planetary gear 2313, the planetary rotating frame 23 is installed on the output flange 25, the output flange 25 and the planetary rotating frame 23 are supported by a crossed roller bearing 28, the crossed roller bearing 28 is fixedly connected with the inner gear ring 22 and the installation base plate 1 through a bearing 28 end pressure 27, the sun gear 21 comprises a small gear ring 212 meshed with a planetary gear 231 and a large gear ring 211 meshed with an input gear shaft 31, and the sun gear 21 is hollow in internal structure;

the mounting base plate comprises a mounting base plate 1, a mounting base 3 is further mounted on one side of the mounting base plate 1, a force input gear shaft 31 which is coaxially connected with an output shaft of an external motor (not shown in the figure) is connected in the mounting base 3 in a rotating mode, the end portion of the force input gear shaft 31 is integrally formed and provided with a key groove, and the force input gear shaft 31 is meshed with a large gear ring 211 on a sun gear 21.

Compared with a common gear, the planetary speed reducing mechanism 2 has higher load, larger transmission ratio, simple and compact structure, the load is distributed on a plurality of teeth, the strength is large, the precision is high, the bearing torque is large, the power is input by an external motor, and then the power is transmitted to the large gear ring 211 of the sun gear 21 through the input gear shaft 31, because the small gear ring 212 and the large gear ring 211 of the sun gear 21 are in an integrated structure, the small gear ring 212 drives the three planetary gears 231 to rotate, then the planetary gears 231 drive the planetary rotating frame 23 to rotate, and meanwhile, the output flange 25 rotates along with the planetary rotating frame 23 to output the power; the key groove integrally formed at the end part of the input gear shaft 31 greatly reduces the radius of the input gear shaft 31, so that the transmission ratio of the input gear shaft 31 and the sun gear 21 is larger, the structure of the hollow rotary platform is smaller and more compact, and the hollow rotary platform is convenient to install in other equipment, and the practicability and the application range of the hollow rotary platform are improved.

Specifically, a carriage oil seal 26 is mounted on the output flange 25.

In the present embodiment, the mount 3 is a bearing chamber.

Specifically, a motor flange 4 is installed on one side of the installation base 3, which is far away from the installation bottom plate 1.

Specifically, the cross section of the gear of the planetary reduction mechanism 2 is arc-shaped. The meshing area between the gears is further increased, the structural stability is improved, the transmission efficiency is higher, and the movement is more stable.

In the present embodiment, each planetary gear 231 is composed of a pin shaft 2311, an upper pad 2312, a planetary wheel 2313, a positioning pin 2314, and a lower pad 2315, which are sequentially mounted on the pin shaft 2311. Two sets of bearings 28 are mounted on the input gear shaft 31, two sets of bearings 28 and two bearing end presses 27 are mounted on the hollow shaft 24, and one set of bearings 28 is mounted on the sun gear 21.

The above-mentioned embodiments are merely illustrative and not restrictive, and those skilled in the art can make modifications to the embodiments without inventive contribution as required after reading the present specification, but only protected by the patent laws within the scope of the claims of the present application.

Claims

1. A hollow rotary platform is characterized in that: the mounting base plate is hollow in structure, a hollow shaft is connected with the mounting base plate, the hollow shaft penetrates through the whole platform, and a planetary speed reducing mechanism is connected to one side of the mounting base plate;

2. A hollow rotary platform according to claim 1, wherein: and a sliding frame oil seal is arranged on the output flange.

3. A hollow rotary platform according to claim 1, wherein: the mounting seat is a bearing chamber.

4. A hollow rotary platform according to claim 1, wherein: and a motor flange is arranged on one side of the mounting seat, which is far away from the mounting base plate.

5. A hollow rotary platform according to claim 1, wherein: the cross section of the gear of the planetary reduction mechanism is arc-shaped.