Anti-overheating three-phase asynchronous motor

Abstract

The utility model discloses an anti-overheating three-phase asynchronous motor, which belongs to the technical field of three-phase asynchronous motors, and comprises a motor body and an anti-overheating alarm mechanism, the upper side wall of the motor body is fixedly connected with a rectangular frame, the anti-overheating alarm mechanism is inserted into the inner side of the rectangular frame, and the upper side wall of the motor body is provided with a monitoring hole. The monitoring end of the anti-overheating alarm mechanism is inserted into the monitoring hole, locking mechanisms are arranged in the side walls of the two sides of the rectangular frame, and the two ends of the two locking mechanisms are inserted into the side walls of the two sides of the anti-overheating alarm mechanism correspondingly. According to the utility model, through the arrangement of the anti-overheating alarm mechanism, when the temperature sensing probe monitors that the temperature in the motor body exceeds a preset temperature value, the control module sends a signal to the alarm to give an alarm, so that a worker can be reminded to take an anti-overheating protection measure in time, and the anti-overheating protection effect on the motor body is further improved.

Description

Technical Field

[0001] The utility model relates to the technical field of three-phase asynchronous motors, in particular to an overheat-proof three-phase asynchronous motor. Background Art

[0002] The three-phase asynchronous motor is a type of induction motor. It is a type of motor that is powered by a 380V three-phase alternating current. Since the rotor and the stator rotating magnetic field of the three-phase asynchronous motor rotate in the same direction and at different speeds, there is a slip rate, so it is called a three-phase asynchronous motor. The speed of the rotor of the three-phase asynchronous motor is lower than the speed of the rotating magnetic field. The rotor winding generates electromotive force and current due to the relative motion between the rotor and the magnetic field, and interacts with the magnetic field to generate electromagnetic torque to achieve energy conversion. The three-phase asynchronous motor consists of two basic parts: a fixed stator and a rotating rotor. The rotor is installed in the inner cavity of the stator and is supported on two end covers by bearings.

[0003] In a Chinese patent for an overheat-proof motor (patent number: CN217159482U), the device includes: a motor body, a protective rear cover, a ventilation baffle and a ventilation fan, the protective rear cover is arranged at the rear end of the motor body, the protective rear cover has a mounting surface and an open surface corresponding to the mounting surface, the mounting surface is provided with a groove, the ventilation fan is accommodated in the groove, the ventilation fan includes a blade, a driven support ring is installed at the edge position of the blade, and a movable pressure plate is fixedly arranged on the side of the driven support ring facing the open surface, and the movable pressure plate has There is a smooth surface and a cleaning surface corresponding to the smooth surface, and bristles are arranged on the cleaning surface; the device realizes the exchange of hot air flow inside the motor body by arranging a ventilation fan and a ventilation baffle in the protective rear cover, and further, by arranging a movable pressure plate and a brush on the ventilation fan, the ventilation baffle can be cleaned, thereby achieving the heat dissipation effect. However, the device adopts the ventilation fan for heat dissipation, but the effect is often not good. Long-term use may cause damage to the motor, and the function of timely alarming for overheating of the motor cannot be performed, resulting in the staff being unable to respond in time and insufficient anti-overheating effect. Summary of the invention

[0004] The utility model aims to provide a three-phase asynchronous motor with overheat protection to solve the problems raised in the above background technology.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: an overheat-proof three-phase asynchronous motor, comprising a motor body and an overheat-proof alarm mechanism, wherein the upper side wall of the motor body is fixedly connected with a rectangular frame, the overheat-proof alarm mechanism is inserted into the inner side of the rectangular frame, the upper side wall of the motor body is provided with a monitoring hole, the monitoring end of the overheat-proof alarm mechanism is inserted into the monitoring hole, the side walls on both sides of the rectangular frame are provided with locking mechanisms, and the two ends of the two locking mechanisms are respectively inserted into the side walls on both sides of the overheat-proof alarm mechanism;

[0006] The anti-overheating alarm mechanism includes a chassis, which is inserted in a rectangular frame. Both side walls of the chassis are provided with lock grooves corresponding to the locking mechanism. A temperature sensor is fixedly connected to the lower side wall of the chassis, and the temperature sensor is inserted in a monitoring hole. An alarm is fixedly connected to the upper side wall of the chassis. A battery pack and a control module are respectively provided in the chassis, and the control module is electrically connected to the temperature sensor, the alarm and the battery pack.

[0007] As a further solution of the utility model: wherein, the locking mechanism includes two sliding cavities symmetrically opened in the side walls of the rectangular frame, a slide plate is slidably connected in the two sliding cavities, one side of the two slide plates is fixedly connected to a sliding rod, a return spring is fixedly connected between the slide plate and the inner wall of the sliding cavity, the return spring is sleeved on the outside of the sliding rod, one end of the two sliding rods passes through the outside of the rectangular frame and is fixedly connected to a pull plate, a locking rod arranged corresponding to the locking groove is fixedly connected to the middle part of the side wall of the pull plate, and one end of the locking rod passes through the rectangular frame.

[0008] As a further solution of the utility model: wherein, a through hole is opened on the side wall of the rectangular frame, and the locking rod is arranged to pass through the through hole.

[0009] As a further solution of the utility model: wherein, the side wall of the rectangular frame is provided with a sliding hole connected to the sliding cavity, and the sliding rod is arranged through the sliding hole.

[0010] As a further solution of the present invention: wherein, the chassis and the inner diameter of the rectangular frame are matched.

[0011] As a further solution of the utility model: wherein, a signal transmitter is provided in the chassis, and one end of the signal transmitter is electrically connected to the control module.

[0012] As a further solution of the utility model: wherein the alarm is a buzzer or a warning light.

[0013] Compared with the prior art, the beneficial effects of the utility model are:

[0014] 1. This kind of overheat-proof three-phase asynchronous motor has an overheat-proof alarm mechanism. The temperature sensor can monitor the temperature in the motor body, and the battery pack provides power output. When the temperature generated by the motor body during operation exceeds the preset temperature value, the control module sends a signal to the alarm to alert the staff to take overheat protection measures in time, thereby further improving the overheat protection effect of the motor body.

[0015] 2. The three-phase asynchronous motor with overheat protection is provided with a locking mechanism. When the overheat protection alarm mechanism needs to be disassembled for maintenance, it is only necessary to pull the pull plate to move, which can drive the locking rod to separate from the locking groove. At this time, the slide plate fixed to the slide rod is driven to slide in the slide cavity, which can squeeze the reset spring to generate elastic force. When the locking rod is completely separated from the lock groove, the chassis can be removed for maintenance. Conversely, when the pull plate is released, the elastic force of the reset spring is used to reset the locking rod. The installation and disassembly are convenient, and the overheat protection alarm mechanism is easy to repair. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a three-dimensional structural schematic diagram of the utility model;

[0017] Figure 2 It is a three-dimensional structural schematic diagram of the utility model without the anti-overheating alarm mechanism;

[0018] Figure 3 It is a cross-sectional structural diagram of the overheating prevention alarm mechanism in the utility model;

[0019] Figure 4 It is a schematic diagram of the cross-sectional structure of the rectangular frame in the utility model in a top view.

[0020] The corresponding relationship between the illustrations and component names in the figure is as follows:

[0021] 1. Motor body; 2. Rectangular frame; 3. Monitoring hole; 4. Chassis; 5. Lock slot; 6. Temperature sensor; 7. Alarm; 8. Battery pack; 9. Control module; 10. Signal transmitter; 11. Sliding cavity; 12. Slide plate; 13. Sliding rod; 14. Reset spring; 15. Pull plate; 16. Lock rod; 17. Through hole; 18. Sliding hole. DETAILED DESCRIPTION

[0022] In order to make the technical problems, technical solutions and beneficial effects to be solved by the present application more clearly understood, the present application is further described in detail below in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are only used to explain the present application and are not used to limit the present application.

[0023] See also Figures 1 to 4In the practical embodiment, an overheat-proof three-phase asynchronous motor includes a motor body 1 and an overheat-proof alarm mechanism. The upper side wall of the motor body 1 is fixedly connected with a rectangular frame 2, and the overheat-proof alarm mechanism is inserted into the inner side of the rectangular frame 2. A monitoring hole 3 is opened on the upper side wall of the motor body 1, and the monitoring end of the overheat-proof alarm mechanism is inserted into the monitoring hole 3. Locking mechanisms are provided in the side walls on both sides of the rectangular frame 2, and the two ends of the two locking mechanisms are respectively inserted into the side walls on both sides of the overheat-proof alarm mechanism.

[0024] Among them, the anti-overheating alarm mechanism includes a chassis 4, the chassis 4 is inserted in the rectangular frame 2, and the side walls of the chassis 4 are provided with lock grooves 5 corresponding to the locking mechanism. The lower side wall of the chassis 4 is fixedly connected with a temperature sensor 6, and the temperature sensor 6 is inserted in the monitoring hole 3. The upper side wall of the chassis 4 is fixedly connected with an alarm 7. A battery pack 8 and a control module 9 are respectively provided in the chassis 4. The control module 9 is electrically connected to the temperature sensor 6, the alarm 7 and the battery pack 8. The temperature sensor 6 can monitor the temperature in the motor body 1, and the battery pack 8 provides power output. When the temperature generated by the motor body 1 during operation exceeds the preset temperature value, the control module 9 sends a signal to the alarm 7 to alarm, which can timely remind the staff to take anti-overheating protection measures, thereby further improving the anti-overheating protection effect of the motor body 1.

[0025] In one embodiment, if Figure 4 As shown: the locking mechanism includes two sliding cavities 11 symmetrically opened in the side wall of the rectangular frame 2, and the two sliding cavities 11 are slidably connected with a slide plate 12, and one side of the two slide plates 12 is fixedly connected with a slide rod 13, and a return spring 14 is fixedly connected between the slide plate 12 and the inner wall of the sliding cavity 11, and the return spring 14 is sleeved on the outer side of the slide rod 13. One end of the two slide rods 13 penetrates the outer side of the rectangular frame 2 and is fixedly connected with a pull plate 15, and the middle part of the side wall of the pull plate 15 is fixedly connected with a lock rod 16 corresponding to the lock groove 5, and one end of the lock rod 16 penetrates The rectangular frame 2 is arranged, when it is necessary to disassemble the anti-overheating alarm mechanism for inspection, it is only necessary to pull the pull plate 15 to move, which can drive the locking rod 16 to separate from the locking groove 5. At this time, the slide plate 12 fixed to the slide bar 13 is driven to slide in the slide cavity 11, which can squeeze the reset spring 14 to generate elastic force. When the locking rod 16 is completely separated from the locking groove 5, the chassis 4 can be removed for inspection. Conversely, when the pull plate 15 is released, the elastic force of the reset spring 14 is used to reset the locking rod 16. The installation and disassembly is convenient, and it is convenient to inspect the anti-overheating alarm mechanism.

[0026] Furthermore, if Figure 4 As shown: the side wall of the rectangular frame 2 is provided with a through hole 17, and the lock rod 16 is arranged through the through hole 17 to facilitate the displacement of the lock rod 16. The side wall of the rectangular frame 2 is provided with a sliding hole 18 connected to the sliding cavity 11, and the sliding rod 13 is arranged through the sliding hole 18 to facilitate the displacement of the sliding rod 13.

[0027] Furthermore, if Figure 2 As shown: the inner diameter of the chassis 4 and the rectangular frame 2 are matched, which is convenient for installation. Figure 3 As shown, a signal transmitter 10 is provided in the chassis 4, one end of the signal transmitter 10 is electrically connected to the control module 9, and can be externally connected to a monitoring terminal so as to remotely perform an overheating alarm, which is a prior art device.

[0028] It is worth noting that if Figure 1 As shown: the alarm 7 is a buzzer or a warning light, and the warning effect is obvious.

[0029] Working principle of the utility model: In the device, when the motor body 1 needs to be protected against overheating, the temperature sensor 6 can monitor the temperature in the motor body 1, and the battery pack 8 provides power output. When the temperature generated by the motor body 1 during operation exceeds the preset temperature value, the control module 9 sends a signal to the alarm 7 to alarm, which can promptly remind the staff to take overheating protection measures, thereby further improving the overheating protection effect of the motor body 1;

[0030] Secondly, when it is necessary to disassemble the anti-overheating alarm mechanism for inspection and maintenance, it is only necessary to pull the pull plate 15 to move, which can drive the locking rod 16 to separate from the locking groove 5. At this time, the slide plate 12 fixed to the slide bar 13 is driven to slide in the slide cavity 11, which can squeeze the reset spring 14 to generate elastic force. When the locking rod 16 is completely separated from the locking groove 5, the chassis 4 can be removed for inspection and maintenance. Conversely, when the pull plate 15 is released, the elastic force of the reset spring 14 is used to reset the locking rod 16. The installation and disassembly are convenient, and the anti-overheating alarm mechanism is easy to inspect and maintain.

[0031] What is described above is only a preferred specific implementation manner of the present invention, but the protection scope of the present invention is not limited thereto. Any technician familiar with the technical field can make equivalent replacements or changes within the technical scope disclosed by the present invention according to the technical scheme and the utility model concept of the present invention, which should be covered by the protection scope of the present invention.

Claims

1. An overheat-proof three-phase asynchronous motor, comprising a motor body (1) and an overheat-proof alarm mechanism, characterized in that: The upper side wall of the motor body (1) is fixedly connected to a rectangular frame (2), the overheating prevention alarm mechanism is inserted into the inner side of the rectangular frame (2), the upper side wall of the motor body (1) is provided with a monitoring hole (3), the monitoring end of the overheating prevention alarm mechanism is inserted into the monitoring hole (3), and locking mechanisms are provided in the side walls on both sides of the rectangular frame (2), and the two ends of the two locking mechanisms are respectively inserted into the side walls on both sides of the overheating prevention alarm mechanism; The overheating prevention alarm mechanism comprises a chassis (4), the chassis (4) being inserted into a rectangular frame (2), the side walls of the chassis (4) being provided with locking grooves (5) corresponding to the locking mechanism, the lower side wall of the chassis (4) being fixedly connected with a temperature sensing probe (6), the temperature sensing probe (6) being inserted into a monitoring hole (3), the upper side wall of the chassis (4) being fixedly connected with an alarm (7), the chassis (4) being provided with a battery pack (8) and a control module (9), respectively, the control module (9) being electrically connected with the temperature sensing probe (6), the alarm (7) and the battery pack (8).

2. The overheat-proof three-phase asynchronous motor according to claim 1, characterized in that: The locking mechanism comprises two sliding cavities (11) symmetrically opened in the side walls of the rectangular frame (2), a sliding plate (12) being slidably connected in the two sliding cavities (11), a sliding rod (13) being fixedly connected to one side of the two sliding plates (12), a return spring (14) being fixedly connected between the sliding plate (12) and the inner wall of the sliding cavity (11), the return spring (14) being sleeved on the outer side of the sliding rod (13), one end of the two sliding rods (13) passing through the outer side of the rectangular frame (2) and being fixedly connected to a pull plate (15), a locking rod (16) arranged corresponding to the locking groove (5) being fixedly connected to the middle part of the side wall of the pull plate (15), one end of the locking rod (16) passing through the rectangular frame (2).

3. The overheat-proof three-phase asynchronous motor according to claim 2, characterized in that: A through hole (17) is provided on the side wall of the rectangular frame (2), and the locking rod (16) is arranged to pass through the through hole (17).

4. The overheat-proof three-phase asynchronous motor according to claim 3, characterized in that: A sliding hole (18) which is connected to the sliding cavity (11) is provided on the side wall of the rectangular frame (2), and the sliding rod (13) is arranged through the sliding hole (18).

5. The overheat-proof three-phase asynchronous motor according to claim 1, characterized in that: The inner diameter of the chassis (4) and the rectangular frame (2) are matched.

6. The overheat-proof three-phase asynchronous motor according to claim 5, characterized in that: A signal transmitter (10) is provided in the chassis (4), and one end of the signal transmitter (10) is electrically connected to the control module (9).

7. The overheat-proof three-phase asynchronous motor according to claim 1, characterized in that: The alarm (7) is a buzzer or a warning light.

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