Main shaft structure of gear motor

Abstract

The utility model relates to the technical field of gear motors, in particular to a gear motor spindle structure which comprises a spindle body, an output shaft can be inserted into one end of the spindle, and fan blades are arranged at the other end of the spindle. The fan blade comprises a connecting ring used for being connected with the end of the main shaft and a plurality of blades arranged on the outer circle of the connecting ring, the blades are arranged around the connecting ring in the circumferential direction, the two ends of each blade are bent towards the middle, the two ends of each blade are close to the end, connected with the main shaft, of the connecting ring, and the middle of the two ends is close to the other end of the connecting ring. The fan blades capable of synchronously rotating are installed at the end of the main shaft, the fan blades can be driven to form airflow for heat dissipation in the rotating process of the main shaft, meanwhile, through the special blade structure design, airflow in the same direction can be formed whether the joint motor rotates forwards or reversely, and the heat dissipation efficiency is improved. Therefore, an effective heat dissipation effect can be formed as long as the main shaft rotates.

Description

Technical Field

[0001] The present application relates to the technical field of reduction motors, and in particular to a reduction motor spindle structure. Background Art

[0002] Robotic arms are widely used in industrial production, logistics and transportation, medical treatment and other fields. The joint motor on the robot arm is its core driving component, which is mainly responsible for converting electrical energy into mechanical energy, thereby realizing the motion control of the robot arm. At present, most joint motors use inner rotor frameless motors, and their main components include reduction motors, electromagnetic brakes, harmonic reducers, encoders, controllers, etc.

[0003] For example, the Chinese patent with the authorization announcement number CN218570023U discloses an outer rotor joint motor, which includes a main shaft and an output shaft. In order to reduce the radial length of the joint motor, the output shaft is inserted into the main shaft, and the main shaft and the output shaft are connected through a harmonic reducer. The main shaft rotates at high speed and drives the output shaft to rotate after the harmonic reducer is decelerated, thereby controlling the movement of the robot arm. This design structure is relatively compact and is conducive to improving the working efficiency of the motor.

[0004] However, in actual use, it is found that the existing joint motors generate serious heat during use, which not only affects the stability and life of the motor, but also may cause safety hazards to the surrounding environment. Therefore, reducing the heat generated by the joint motor during use and improving its heat dissipation performance have become technical problems that need to be solved urgently. Utility Model Content

[0005] In order to improve the heat dissipation effect of the joint motor, the present application provides a reduction motor spindle structure.

[0006] The present application provides a reduction motor spindle structure, which adopts the following technical solution:

[0007] A reduction motor spindle structure includes a spindle body, one end of the spindle is for the output shaft to be inserted, and the other end of the spindle is provided with a fan blade, the fan blade includes a connecting ring for connecting with the end of the spindle, and a plurality of blades arranged on the outer circle of the connecting ring, the blades are arranged circumferentially around the connecting ring and are bent toward the middle at both ends, the two ends of the blades are close to one end where the connecting ring is connected to the spindle, and the middle of the two ends is close to the other end of the connecting ring.

[0008] In one of the embodiments: the blades are arranged to be inclined away from the main axis along the radial protrusion direction of the connecting ring.

[0009] In one embodiment, the inclination angle of the blades is gradually increased from the two ends to the middle.

[0010] In one of the embodiments: the blades are evenly distributed around the connecting ring.

[0011] In one of the embodiments: the connecting ring is connected to the main shaft by bolts.

[0012] In one of the embodiments: a plurality of through holes are provided on the end surface of the connecting ring, a countersunk hole is provided at one end of the through hole away from the main shaft, and a threaded hole matching with the through hole is provided on the end surface of the main shaft.

[0013] In one embodiment, the perforations are grouped in pairs of two, the number of groups of the perforations is the same as the number of blades, and each group of the perforations is located in a fan-shaped area where the connecting ring and the blades are connected.

[0014] In summary, this application has the following beneficial effects:

[0015] By installing a fan blade that can rotate synchronously at the end of the main shaft, the fan blade can be driven to form airflow for heat dissipation during the rotation of the main shaft. At the same time, through the special blade structure design, the joint motor can form airflow in the same direction regardless of whether it is rotating forward or reverse, thereby ensuring that the heat dissipation effect can be achieved as long as the main shaft rotates. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural schematic diagram of this embodiment;

[0017] Figure 2 Schematic diagram of the structure of the fan blade in this embodiment;

[0018] Figure 3 is a front view of the fan blade in this embodiment;

[0019] Figure 4 is a cross-sectional view of this embodiment.

[0020] In the figure, 100, main shaft body; 200, fan blade; 210, connecting ring; 211, through hole; 212, countersunk hole; 220, blade. DETAILED DESCRIPTION

[0021] The present application is further described in detail below in conjunction with the accompanying drawings.

[0022] In the description of the present application, it should be understood that the terms "up", "down", "left", "right", etc., indicating directions or positional relationships are based on the directions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present application and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific direction, be constructed and operated in a specific direction, and therefore should not be understood as a limitation on the present application.

[0023] A reduction motor spindle structure, such as Figure 1As shown, it includes a main shaft body 100, one end of the main shaft can be used for the output shaft to be inserted, and the other end of the main shaft is provided with a fan blade 200.

[0024] Reference Figure 2 The fan blade 200 includes a connecting ring 210 for connecting to the end of the main shaft, and a plurality of blades 220 arranged on the outer circle of the connecting ring 210. The connecting ring 210 is bolted to the main shaft. Figure 3 The end surface of the connecting ring 210 is provided with a plurality of through holes 211, and a countersunk hole 212 is provided at one end of the through hole 211 away from the main shaft, and a threaded hole matching with the through hole 211 is provided on the end surface of the main shaft. During installation, bolts are passed through the through holes 211 to connect with the threaded holes, wherein the nuts of the bolts are embedded in the countersunk holes 212 for storage, so that the bolts do not protrude from the end surface of the connecting ring 210.

[0025] The perforations 211 are grouped in pairs. The number of groups of perforations 211 is the same as the number of blades 220 . In this embodiment, three groups are provided. Each group of perforations 211 is located in a fan-shaped area where the connecting ring 210 and the blades 220 are connected.

[0026] The blades 220 are evenly distributed around the connection ring 210 in the circumferential direction. In this embodiment, three blades 220 are taken as an example.

[0027] like Figure 2 and Figure 3 As shown, the blades 220 are circumferentially arranged around the connecting ring 210 and bent toward the middle at both ends. The two ends of the blades 220 are close to one end of the connecting ring 210 connected to the main shaft, and the middle of the two ends is close to the other end of the connecting ring 210.

[0028] like Figure 4 As shown, the blade 220 is inclined away from the main axis along the radial protrusion direction of the connecting ring 210, wherein the inclination angle is represented by α in the figure, and the inclination angle α is gradually increased from both ends to the middle of the blade 220. Through this arrangement, during the rotation of the fan blade 200, a greater wind pressure can be formed, thereby improving the heat dissipation effect.

[0029] The embodiments of this specific implementation method are all preferred embodiments of the present application, and are not intended to limit the protection scope of the present application. Therefore, all equivalent changes made based on the structure, shape, and principle of the present application should be included in the protection scope of the present application.

Claims

1. A reduction motor spindle structure, comprising a spindle body (100), one end of the spindle being insertable for an output shaft, wherein: A fan blade (200) is provided at the other end of the main shaft, the fan blade (200) comprising a connecting ring (210) for connecting to the end of the main shaft, and a plurality of blades (220) arranged on the outer circle of the connecting ring (210), the blades (220) being arranged circumferentially around the connecting ring (210) and bent toward the middle at both ends, the two ends of the blade (220) being close to one end where the connecting ring (210) is connected to the main shaft, and the middle of the two ends is close to the other end of the connecting ring (210).

2. The reduction motor spindle structure according to claim 1 is characterized in that: The blades (220) are arranged in an inclined manner away from the main axis along the radial protrusion direction of the connecting ring (210).

3. The reduction motor spindle structure according to claim 2 is characterized in that: The inclination angles of the blades (220) are gradually increased from the two ends to the middle.

4. The reduction motor spindle structure according to claim 1, 2 or 3, characterized in that: The blades (220) are evenly distributed in the circumferential direction around the connecting ring (210).

5. The reduction motor spindle structure according to claim 1 is characterized in that: The connecting ring (210) is bolted to the main shaft.

6. The reduction motor spindle structure according to claim 5 is characterized in that: A plurality of through holes (211) are provided on the end surface of the connecting ring (210); a countersunk hole (212) is provided at one end of the through hole (211) away from the main shaft; and a threaded hole matching the through hole (211) is provided on the end surface of the main shaft.

7. The reduction motor spindle structure according to claim 6 is characterized in that: The perforations (211) are arranged in pairs of two to form a group, the number of groups of the perforations (211) is the same as the number of blades (220), and each group of the perforations (211) is located in a fan-shaped area where the connecting ring (210) and the blades (220) are connected.

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