CN211880246U - A hollow rotary actuator - Google Patents

Abstract

The present application relates to the technical field of hollow rotating platforms, and more specifically, it relates to a hollow rotating actuator, including a hollow housing, an output shaft rotatably connected inside the housing, a motor connected to one side of the housing, a transmission assembly connected between the motor and the output shaft, and the transmission assembly installed inside the housing; the transmission assembly includes a gear shaft coaxially connected to the motor output shaft, a first bevel gear integrally formed on the gear shaft; and also includes a second bevel gear rotatably connected to the inside of the housing and installed on the output shaft, the first bevel gear and the second bevel gear meshing. The present application has the advantages of being more compact and easy to install.

Description

A hollow rotary actuator

technical field

The present application relates to the technical field of hollow rotary platforms, and more particularly, to a hollow rotary actuator.

Background technique

Hollow rotary actuators are used in a variety of rotary motion occasions and can replace DD motors and cam dividers. It integrates high work efficiency, high precision, high rigidity and high cost performance. It is a revolutionary product in the rotary motion mechanism. A balance between the two is achieved, the repeatability of positioning is ±5sec, the motor is easy to configure, and the load is stable.

The existing hollow rotating platform is equipped with meshing gears and a motor that drives each meshing gear to rotate, wherein a gear is installed on the output shaft of the motor for meshing and driving other gears. However, in some technical fields, especially medical equipment In the field, the requirements for the structure and size of the hollow rotating platform are relatively high. Because the hollow rotating platform of ordinary size is equipped with gears on the motor output shaft, the hollow rotating platform is slightly larger, and it is difficult to install it inside the compact medical device.

Utility model content

In view of the above-mentioned deficiencies of the prior art, the purpose of the present application is to provide a hollow rotary actuator, which has the advantages of smaller and more compact structure and easy installation.

The above technical purpose of the present application is achieved through the following technical solutions: a hollow rotary actuator, comprising a hollow box body, an output shaft is rotatably connected inside the box body, and a motor is connected on one side of the box body, so A transmission assembly is connected between the motor and the output shaft, and the transmission assembly is installed inside the box;

The transmission assembly includes a gear shaft coaxially connected to the output shaft of the motor, and a first bevel gear is integrally formed on the gear shaft; and also includes a second bevel gear rotatably connected to the inside of the box and mounted on the output shaft, The first bevel gear meshes with the second bevel gear.

Preferably, the output shaft is a hollow shaft.

Preferably, the model of the motor is a 28 stepper motor.

Preferably, a motor flange is installed between one end of the output shaft of the motor and the box body, and the gear shaft is rotatably connected to the motor flange.

Preferably, an end cover is installed on the box body, and the end cover is installed on the end of the output shaft away from the motor.

To sum up, the present application has the beneficial effects: when the hollow rotary actuator works, the gear shaft is driven to rotate by the motor, and the power is transmitted to the output shaft through the first bevel gear and the second bevel gear; It is formed on the gear shaft. Compared with the prior art, the gear is assembled on the gear shaft, which greatly reduces the index circle radius of the gear, so that the transmission ratio of the first bevel gear and the second bevel gear is larger. The structure of the hollow rotary actuator is more compact and compact, and it is easy to be installed in other equipment, thereby improving the practicability and use range of the hollow rotary actuator.

Description of drawings

Fig. 1 is the overall structure schematic diagram of the embodiment of the present application;

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

Reference numerals: 1. Box body; 2. Output shaft; 3. Motor; 4. Transmission assembly; 41. Gear shaft; 411. First bevel gear; 42. Second bevel gear; 5. Motor flange; 6. End cover; 7. Deep groove ball bearing; 8. Washer; 9. Adjusting nut.

Detailed ways

In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application clearer, the present application will be described in further detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application, but not to limit the present application.

It should be noted that when a component is referred to as being "fixed to" or "disposed on" another component, it can be directly on the other component or indirectly on the other component. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element.

It is to be understood that the terms "length", "width", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top" , "bottom", "inside", "outside", etc. indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, which are only for the convenience of describing the application and simplifying the description, rather than indicating or implying the indicated device. Or elements must have a particular orientation, be constructed and operate in a particular orientation, and therefore should not be construed as a limitation of the present application.

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

A hollow rotary actuator, referring to FIG. 1 and FIG. 2, includes a hollow box body 1, an output shaft 2 is rotatably connected inside the box body 1, a motor 3 is connected to one side of the box body 1, and the motor 3 A transmission assembly 4 is connected with the output shaft 2, and the transmission assembly 4 is installed inside the box body 1;

The transmission assembly 4 includes a gear shaft 41 that is coaxially connected to the output shaft 2 of the motor 3, and a first bevel gear 411 is integrally formed on the gear shaft 41; it also includes a gear shaft 41 that is rotatably connected to the inside of the box body 1 and installed on the output shaft. 2 on the second bevel gear 42, the first bevel gear 411 meshes with the second bevel gear 42.

When the hollow rotary actuator works, the gear shaft 41 is driven to rotate by the motor 3, and the power is transmitted to the output shaft 2 through the first bevel gear 411 and the second bevel gear 42; since the first bevel gear 411 is integrally formed on the gear shaft 41 , compared with the prior art, the gear is assembled on the gear shaft 41, which greatly reduces the indexing circle radius of the gear, so that the transmission ratio of the first bevel gear 411 and the second bevel gear 42 is larger, so that the The hollow rotary actuator has a smaller and more compact structure and is easy to be installed in other equipment, thereby improving the practicability and use range of the hollow rotary actuator.

Specifically, the output shaft 2 is a hollow shaft. The arrangement of the hollow shaft is convenient for workers to assemble the cables inside the hollow shaft, which further saves the assembly space and makes the wiring more convenient and neat.

Specifically, the model of the motor 3 is a 28 stepper motor.

Specifically, a motor flange 5 is installed between one end of the output shaft 2 of the motor 3 and the casing 1 , and the gear shaft 41 is rotatably connected to the motor flange 5 .

Specifically, the box body 1 is provided with an end cover 6, and the end cover 6 is mounted on the end of the output shaft 2 away from the motor 3.

In this embodiment, the hollow rotary actuator adopts a deep groove ball bearing 7 for the gear shaft 41 and the output shaft 2 to rotate, and a washer 8 and an adjusting nut 9 are also installed between the gear shaft 41 and the casing 1 .

The above-mentioned embodiment is only an explanation of the present application, and it is not a limitation to the present application. Those skilled in the art can make modifications without creative contribution to the present embodiment as required after reading this specification, but as long as the claims of the present application are protected by patent law.

Claims (5)

1. A hollow rotary actuator is characterized in that: it comprises a hollow box body, an output shaft is rotatably connected inside the box body, a motor is connected on one side of the box body, and a motor is connected between the motor and the output shaft. A transmission assembly is connected, and the transmission assembly is installed inside the box; The transmission assembly includes a gear shaft coaxially connected to the output shaft of the motor, and a first bevel gear is integrally formed on the gear shaft; and also includes a second bevel gear rotatably connected to the inside of the box and mounted on the output shaft, The first bevel gear meshes with the second bevel gear. 2 . The hollow rotary actuator according to claim 1 , wherein the output shaft is a hollow shaft. 3 . 3. A hollow rotary actuator according to claim 1, characterized in that: the model of the motor is a 28 stepper motor. 4 . The hollow rotary actuator according to claim 1 , wherein a motor flange is installed between one end of the output shaft of the motor and the box body, and the gear shaft is rotatably connected in the motor flange. 5 . 5 . The hollow rotary actuator according to claim 1 , wherein an end cover is installed on the box body, and the end cover is installed on the end of the output shaft away from the motor. 6 .

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