Motor with overload protection function

Abstract

The utility model relates to the technical field of motor protection, in particular to a motor with an overload protection function, which comprises a servo motor, the end part of the servo motor is sleeved with a primary overload protection assembly, and one side of the primary overload protection assembly far away from the servo motor is fixedly connected with a secondary overload protection assembly. And the interior of the secondary overload protection assembly is fixedly connected with a mechanical assembly. According to the utility model, by adding primary overload protection and secondary overload protection to the servo motor, the servo motor has a certain protection mechanism during operation overload, abnormal conditions of the motor can be found and processed in time through overload protection, shutdown or damage of the whole system caused by motor faults is prevented, and the service life of the servo motor is prolonged. Therefore, the reliability and stability of the system are improved.

Description

Technical Field

[0001] This utility model relates to the field of motor protection technology, specifically to a motor with overload protection function. Background Technology

[0002] Motor overload refers to the actual power used by a motor exceeding its rated power. Overload operation causes the internal temperature of the motor to rise, potentially exceeding the temperature rise limit, accelerating the aging of insulation materials, and shortening the motor's lifespan. Prolonged operation of a motor under overload conditions can lead to damage or failure of motor components, and in severe cases, may result in the motor being scrapped, thus increasing repair or replacement costs. Long-term overload operation can also cause serious mechanical failures such as bearing damage and shaft breakage. Therefore, there is an urgent need for a technical solution to address these problems. Utility Model Content

[0003] The purpose of this invention is to provide a motor with overload protection function to solve the problems in the prior art.

[0004] To solve the above-mentioned technical problems, this utility model specifically provides the following technical solution:

[0005] A motor with overload protection function includes a servo motor. A primary overload protection component is sleeved on the end of the servo motor. A secondary overload protection component is fixedly connected to the side of the primary overload protection component away from the servo motor. A mechanical component is fixedly connected inside the secondary overload protection component.

[0006] Based on a preferred embodiment of a motor with overload protection function, the primary overload protection component includes an expansion sleeve coupling fixedly sleeved on the output end of the servo motor, and a first coupling is fixedly connected to the outside of the expansion sleeve coupling.

[0007] Based on a preferred embodiment of a motor with overload protection function, the secondary overload protection component includes a first diaphragm fixedly connected to the side wall of the first coupling, a connecting block fixedly connected to the side wall of the first diaphragm, a second diaphragm fixedly connected to the other side of the connecting block, a second coupling fixedly connected to the side wall of the second diaphragm, and the second coupling fixedly connected to a mechanical component.

[0008] Based on a preferred embodiment of a motor with overload protection function, the first coupling is provided with a plurality of mounting holes, the first diaphragm is provided with a plurality of receiving holes for mating with the mounting holes, a screw is fixedly installed in each mounting hole, and the end of each screw passes through the receiving hole, and a nut is threaded onto each screw.

[0009] Based on a preferred embodiment provided by a motor with overload protection, the second coupling and the second diaphragm are fixedly connected by a plurality of screws and a plurality of nuts.

[0010] Based on a preferred embodiment provided by a motor with overload protection, the mechanical component has a worm gear fixedly connected to the second coupling.

[0011] Compared with the prior art, this utility model has the following advantages: by adding first-level overload protection and second-level overload protection to the servo motor, the servo motor has a certain protection mechanism when it is overloaded. Through overload protection, abnormal conditions of the motor can be detected and dealt with in a timely manner, preventing the entire system from shutting down or being damaged due to motor failure, thereby improving the reliability and stability of the system. Attached Figure Description

[0012] To more clearly illustrate the embodiments of this utility model or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings in the following description are merely exemplary, and those skilled in the art can derive other embodiments based on the provided drawings without creative effort.

[0013] Figure 1 This is a three-dimensional structural diagram of the present invention.

[0014] Figure 2 This is a front sectional view of the present invention;

[0015] Figure 3 for Figure 2 An enlarged diagram of A in the diagram.

[0016] In the diagram: 1. Servo motor; 2. Primary overload protection component; 21. Expansion sleeve coupling; 22. First coupling; 221. Mounting hole; 3. Secondary overload protection component; 31. First diaphragm; 311. Receiving hole; 32. Connecting block; 33. Second diaphragm; 34. Second coupling; 35. Screw; 36. Nut; 4. Worm gear. Detailed Implementation

[0017] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.

[0018] The concepts involved in this application will first be described with reference to the accompanying drawings. It should be noted that the following descriptions of various concepts are only for the purpose of making the content of this application easier to understand and do not constitute a limitation on the scope of protection of this application; furthermore, the embodiments and features in the embodiments of this application can be combined with each other unless otherwise specified. This application will now be described in detail with reference to the accompanying drawings and embodiments.

[0019] Example

[0020] like Figures 1 to 3 As shown, this utility model provides a motor with overload protection function, including a servo motor 1. A first-level overload protection component 2 is sleeved on the end of the servo motor 1. A second-level overload protection component 3 is fixedly connected to the side of the first-level overload protection component 2 away from the servo motor 1. A mechanical component is fixedly connected inside the second-level overload protection component 3.

[0021] As a further embodiment of a motor with overload protection function, the first-level overload protection component 2 includes an expansion sleeve coupling 21 fixedly sleeved on the output end of the servo motor 1, and a first coupling 22 is fixedly connected to the outside of the expansion sleeve coupling 21.

[0022] As a further embodiment of a motor with overload protection function, the secondary overload protection component 3 includes a first diaphragm 31 fixedly connected to the side wall of the first coupling 22, a connecting block 32 fixedly connected to the side wall of the first diaphragm 31, a second diaphragm 33 fixedly connected to the other side of the connecting block 32, a second coupling 34 fixedly connected to the side wall of the second diaphragm 33, and the second coupling 34 fixedly connected to the mechanical component.

[0023] As a further explanation of this embodiment, motor overload refers to the actual power used by the motor exceeding its rated power. Overload operation causes the internal temperature of the motor to rise, potentially exceeding the temperature rise limit, accelerating the aging of insulation materials, and shortening the motor's lifespan. Prolonged operation of the motor under overload conditions can lead to damage or failure of motor components, and in severe cases, may result in the motor being scrapped, thus increasing repair or replacement costs. Long-term overload operation may also cause serious mechanical failures such as bearing damage and shaft breakage. In this embodiment, by attaching an expansion sleeve coupling 21 to the output end of the servo motor 1, the servo motor 1 and the first coupling 22 are fixedly connected, providing the first level of overload protection for the servo motor 1. Specifically, the working principle of the expansion sleeve coupling 21 is mainly based on the deformation of the expansion sleeve to achieve shaft connection and transmission. The expansion sleeve is a cylindrical part with an inner diameter slightly larger than the shaft diameter and an outer diameter slightly smaller than the inner diameter of the sleeve. When the expansion sleeve is installed on the shaft and subjected to axial force, the expansion sleeve undergoes elastic deformation, with its inner and outer sleeves contracting inward and expanding outward, causing the shaft and hub to fit tightly together. This tight fit generates sufficient friction to transmit torque and enable the mechanism to operate. The expansion sleeve coupling 21 deforms under axial force by tightening high-strength bolts, generating radial force and friction. When the coupling is subjected to a load exceeding its design range, the expansion sleeve may lose its connection function, thus protecting the equipment from damage. The core of the secondary overload protection component 3 is the diaphragm and the second coupling 34. Specifically, the diaphragm coupling, composed of the diaphragm and the second coupling 34, is based on the elastic deformation of the diaphragm. When torque is transmitted through the coupling, the diaphragm undergoes moderate bending deformation, allowing for a certain degree of misalignment between the shafts. This misalignment includes axial, radial, and angular displacements, enabling the diaphragm coupling to compensate for relative displacement between the driving and driven motors caused by manufacturing errors, installation errors, load deformation, and temperature changes. The elasticity of the diaphragm also absorbs and reduces vibrations and shocks in the system, improving the smoothness of the transmission. In addition, diaphragm couplings have a strong ability to compensate for misalignment between two shafts, and can withstand a certain degree of deviation while generating low bearing load. By adding primary and secondary overload protection to servo motor 1, a certain protection mechanism is provided for servo motor 1 when it is overloaded. Through overload protection, abnormal conditions of the motor can be detected and handled in a timely manner, preventing the entire system from shutting down or being damaged due to motor failure, thereby improving the reliability and stability of the system.

[0024] As a further embodiment of a motor with overload protection function, the first coupling 22 is provided with a plurality of mounting holes 221, and the first diaphragm 31 is provided with a plurality of receiving holes 311 for matching the mounting holes 221. Each mounting hole 221 is fixedly installed with a screw 35, and the end of each screw 35 passes through the receiving hole 311. Each screw 35 is threaded with a nut 36.

[0025] As a further embodiment of a motor with overload protection, the second coupling 34 and the second diaphragm 33 are fixedly connected by a plurality of screws 35 and a plurality of nuts 36.

[0026] As a further embodiment of a motor with overload protection, the mechanical assembly has a worm gear 4 fixedly connected to the second coupling 34.

[0027] The embodiments and / or implementation methods described above are merely preferred embodiments and / or implementation methods for implementing the present utility model, and are not intended to limit the implementation methods of the present utility model in any way. Any person skilled in the art can make some modifications or alterations to other equivalent embodiments without departing from the scope of the technical means disclosed in the present utility model, but these should still be regarded as the same technology or embodiment as the present utility model.

[0028] This document uses specific examples to illustrate the principles and implementation methods of this application. The descriptions of the above embodiments are only for the purpose of helping to understand the methods and core ideas of this application. The above descriptions are only preferred embodiments of this application. It should be noted that due to the limitations of written expression, while there are objectively infinite specific structures, those skilled in the art can make several improvements, modifications, or changes without departing from the principles of this application, and can also combine the above technical features in an appropriate manner. These improvements, modifications, changes, or combinations, or the direct application of the inventive concept and technical solution to other situations without modification, should all be considered within the scope of protection of this application.

Claims

1. A motor with overload protection function, comprising a servo motor (1), characterized in that, A primary overload protection component (2) is sleeved on the end of the servo motor (1). A secondary overload protection component (3) is fixedly connected to the side of the primary overload protection component (2) away from the servo motor (1). A mechanical component is fixedly connected inside the secondary overload protection component (3).

2. A motor with overload protection function according to claim 1, characterized in that, The first-level overload protection component (2) includes an expansion sleeve coupling (21) fixedly sleeved on the output end of the servo motor (1), and a first coupling (22) is fixedly connected to the outside of the expansion sleeve coupling (21).

3. A motor with overload protection function according to claim 2, characterized in that, The secondary overload protection component (3) includes a first diaphragm (31) fixedly connected to the side wall of the first coupling (22), a connecting block (32) fixedly connected to the side wall of the first diaphragm (31), a second diaphragm (33) fixedly connected to the other side of the connecting block (32), a second coupling (34) fixedly connected to the side wall of the second diaphragm (33), and the second coupling (34) fixedly connected to the mechanical component.

4. A motor with overload protection function according to claim 3, characterized in that, The first coupling (22) has a plurality of mounting holes (221), and the first diaphragm (31) has a plurality of receiving holes (311) for fitting the mounting holes (221). Each mounting hole (221) is fixedly installed with a screw (35), and the end of each screw (35) passes through the receiving hole (311). Each screw (35) is threaded with a nut (36).

5. A motor with overload protection function according to claim 4, characterized in that, The second coupling (34) and the second diaphragm (33) are fixedly connected by a plurality of screws (35) and a plurality of nuts (36).

6. A motor with overload protection function according to claim 3, characterized in that, The mechanical component has a worm (4) that is fixedly connected to the second coupling (34).

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