Motor

Abstract

The invention relates to the technical field of motors, in particular to a motor which comprises a main shell, a stator assembly fixedly installed in the main shell and a rotor assembly rotationally installed in the main shell, and a driving shaft capable of synchronously rotating with a rotor is slidably installed in the rotor of a rotor assembly body in the axis direction; the detachable driving shaft is arranged in the rotor assembly of the motor, and the driving shaft is controlled to slide along the rotating shaft direction of the rotor assembly, so that the driving shaft is separated from the external equipment, and the occurrence of motor faults is reduced.

Description

Technical Field

[0001] This invention relates to the field of electric motor technology, and more specifically, to an electric motor. Background Technology

[0002] The main causes of motor failure are as follows: motor bearings break due to impact; stator voltage is too high, increasing iron losses; load current is too high, increasing copper losses in the stator windings; frequency is too low, causing the cooling fan speed to slow down and affecting generator heat dissipation; power factor is too low, causing the rotor excitation current to increase and the rotor to overheat; air ducts are blocked by dust, resulting in poor ventilation and difficulty in generator heat dissipation; inlet air temperature or inlet water temperature is too high, causing the cooler to be blocked; and some of these situations can be avoided by disconnecting the motor output shaft from external equipment. Summary of the Invention

[0003] In order to achieve the goal of actively controlling the motor output shaft to disconnect from external equipment and reducing the occurrence of motor failures, the present invention adopts the following technical solution:

[0004] The purpose of this invention is to provide a solution for setting a detachable drive shaft in the rotor assembly of a motor. By controlling the drive shaft to slide along the rotation axis of the rotor assembly, the drive shaft can be disconnected from external equipment, thereby reducing the occurrence of motor failures.

[0005] To achieve the above objectives, the present invention provides an electric motor, including a main housing, a stator assembly fixedly installed within the main housing, and a rotor assembly rotatably installed within the main housing.

[0006] In this application, a drive shaft capable of rotating synchronously with the rotor is slidably mounted inside the rotor of the rotor assembly body along the axial direction. Attached Figure Description

[0007] The following figures are intended only to illustrate and explain the present invention, wherein:

[0008] Figure 1 This is a schematic diagram of the overall structure of the motor of the present invention. Figure One ;

[0009] Figure 2 This is a schematic diagram of the overall structure of the motor of the present invention. Figure Two ;

[0010] Figure 3 This is a cross-sectional schematic diagram of the motor as a whole according to the present invention;

[0011] Figure 4 This is a schematic diagram of the motor portion of the present invention. Figure One ;

[0012] Figure 5This is a schematic diagram of the motor portion of the present invention. Figure Two ;

[0013] Figure 6 This is a schematic diagram of the motor portion of the present invention. Figure Three .

[0014] In the figure: main housing 11; sealing sleeve 12; stator core 13; extension housing 14; rotor 21; rotor core 22; drive shaft 31; keyway I 32; limiting edge 33; U-shaped seat 41; insert 42; sleeve 51; sliding column 52; moving handle 53; electromagnet 54; T-shaped column 55. Detailed Implementation

[0015] In order to achieve the purpose of actively controlling the motor output shaft to disconnect from external equipment and reducing the occurrence of motor failures, the present invention provides a motor, including a main housing 11, a stator assembly fixedly installed in the main housing 11, and a rotor assembly rotatably installed in the main housing 11.

[0016] The following describes specific embodiments of the present invention.

[0017] Reference Figures 3-4 The diagram illustrates the specific structural representation of the rotor assembly and stator assembly inside the motor provided by this invention:

[0018] The rotor assembly of this application has a drive shaft 31 that can rotate synchronously with the rotor 21 slidably installed inside the rotor 21 along the axial direction. A rotor core 22 is fixedly installed on the side of the rotor 21, and a rotor coil is wound on the rotor core 22.

[0019] The stator assembly includes a stator core 13 fixedly mounted inside the main housing 11 and stator coils wound on the stator core 13.

[0020] Reference Figures 1-2 and Figure 4 The following illustration shows an embodiment of the motor provided by the present invention, which connects the drive shaft 31 to an external device:

[0021] The drive shaft 31 of this application has at least one flat surface on its side, one of which has a keyway I 32, and the external device is a gear or a pulley.

[0022] The connection between the drive shaft 31 and the external equipment is completed by installing a connecting key in keyway I 32 and inserting a part of the connecting key into keyway II at the shaft hole of the gear or pulley.

[0023] Reference Figures 3-5 The diagram illustrates the specific structure of the control component in the motor provided by this invention:

[0024] An extension housing 14 is fixedly mounted on the side of the main housing 11 of this application, and a control component for controlling the sliding of the drive shaft 31 is installed inside the extension housing 14.

[0025] Specifically: The control component includes an insert 42, which is rotatably mounted on the drive shaft 31. The end of the drive shaft 31 is integrally formed with a limit edge 33. The insert 42 is disposed between the limit edge 33 and the end of the rotor 21. A movable handle 53 is slidably mounted in the extended housing 14. The movable handle 53 is detachably connected to the insert 42.

[0026] The U-shaped seat 41 is fixedly installed inside the extended housing 14, and the insert 42 is slidably installed inside the U-shaped seat 41 so that the insert 42 will not rotate.

[0027] The movable handle 53 is slidably installed in the U-shaped seat 41, and the movable handle 53 is provided with a hook structure. The hook structure can be engaged and connected with the cross post on the insert 42. By adjusting the position of the movable handle 53, the insert 42 and the drive shaft 31 are driven to slide together in the U-shaped seat 41, so that the drive shaft 31 is disengaged from the external device.

[0028] Reference Figure 1 and Figures 3-4 The following illustration shows an embodiment of the motor provided by the present invention that increases the rotational stability of the rotor 21:

[0029] A sealing sleeve 12 is provided inside the main housing 11 of this application, and the rotor 21 is rotatably connected to the sealing sleeve 12.

[0030] The rotor 21 has multiple limiting rings integrally formed on its side. The ends of the multiple limiting rings abut against the inner and outer walls of the main housing 11 and the end plane of the U-shaped seat 41, thereby increasing the rotational stability of the rotor 21.

[0031] Reference Figures 4-6 The illustration shows an embodiment of the motor provided by the present invention, in which the electromagnet 54 is activated to magnetically attract the slide column 52, thereby pulling the drive shaft 31 and disengaging the drive shaft 31 from the external device, thus reducing the occurrence of motor failures.

[0032] The extended housing 14 of this application has an integrally formed sleeve 51, a sliding column 52 is slidably installed in the sleeve 51, the sliding column 52 is fixedly installed on the moving handle 53, and an electromagnet 54 is installed in the sleeve 51. The electromagnet 54 and the sliding column 52 are connected by magnetic coupling.

[0033] Commercially available sensors can be used to detect the motor's operating status and the magnitude of the torsional force on the motor bearings;

[0034] When the critical value is detected, the electromagnet 54 is activated to attract the slide column 52, control the movement of the slide column 52, and make the slide column 52 slide inside the sleeve 51. The insert 42 is moved by the moving handle 53 to pull the drive shaft 31, so that the drive shaft 31 is disconnected from the external equipment to avoid the motor shaft from twisting and breaking.

[0035] Reference Figures 2-6 The illustration shows an embodiment of the motor provided by the present invention, in which the sliding column 52, insert 42 and moving handle 53 are moved together by manual control without starting the electromagnet, thereby pulling the drive shaft 31 and disengaging the drive shaft 31 from the external device:

[0036] The slide column 52 of this application is equipped with a non-metallic T-shaped column 55, which passes through the electromagnet 54 and the extension housing 14. The T-shaped column 55 is rotatably connected to the extension housing 14, and a manual clamping end is provided at the end of the T-shaped column 55 on the outside of the extension housing 14.

[0037] Clamp the manual gripping end with pliers, and then move the slide column 52, insert 42 and moving handle 53 together without activating the electromagnet. This disengages the drive shaft 31 from the external device and reduces the occurrence of motor failures.

Claims

1. An electric motor, comprising a main housing (11), a stator assembly fixedly mounted within the main housing (11), and a rotor assembly rotatably mounted within the main housing (11), characterized in that: A drive shaft (31) capable of rotating synchronously with the rotor (21) is slidably mounted inside the rotor (21) of the rotor assembly body along the axial direction.

2. The motor according to claim 1, characterized in that: The drive shaft (31) has at least one flat surface on its side, one of which has a keyway I (32).

3. The motor according to claim 1, characterized in that: The rotor (21) is fixedly mounted on the side with a rotor core (22), and a rotor coil is wound on the rotor core (22).

4. The motor according to claim 1, characterized in that: The stator assembly includes a stator core (13) fixedly installed in the main housing (11) and stator coils wound on the stator core (13).

5. The motor according to claim 1, characterized in that: An extension housing (14) is fixedly installed on the side of the main housing (11), and a control component for controlling the sliding of the drive shaft (31) is installed inside the extension housing (14).

6. The motor according to claim 5, characterized in that: The control component includes an insert (42), which is rotatably mounted on a drive shaft (31). A limit edge (33) is integrally formed at the end of the drive shaft (31). The insert (42) is disposed between the limit edge (33) and the end of the rotor (21). A movable handle (53) is slidably mounted in the extended housing (14). The movable handle (53) is detachably connected to the insert (42).

7. The motor according to claim 6, characterized in that: The extended housing (14) is integrally formed with a sleeve (51), and a sliding column (52) is slidably installed inside the sleeve (51). The sliding column (52) is fixedly installed on the moving handle (53).

8. The motor according to claim 6, characterized in that: A U-shaped seat (41) is fixedly installed inside the extended housing (14), and an insert (42) is slidably installed inside the U-shaped seat (41).

9. The motor according to claim 7, characterized in that: An electromagnet (54) is installed inside the sleeve (51), and the electromagnet (54) is connected to the sliding column (52) by magnetic coupling.

10. The motor according to claim 1, characterized in that: A sealing sleeve (12) is provided inside the main housing (11), and the rotor (21) is rotatably connected to the sealing sleeve (12).

Images