Anti-vibration explosion-proof motor

Abstract

The utility model discloses an anti -vibration's explosion -proof motor, including explosion -proof motor structure, the coaxality positioning mechanism is provided on the front end of explosion -proof motor structure, and the outer ring forepart of explosion -proof motor structure is provided with the shaft coupling assembly, explosion -proof motor structure includes motor stator, the rotor rotation setting in the inner chamber of motor stator, in the scheme, through setting up the shaft coupling assembly, utilize the occlusion dish cooperation front and rear jacket and fastening bolt, can stable transmission torque, occlusion dish inlay laser emitter and with each component coaxial arrangement, provide the basis for the coaxality monitoring. The coaxality positioning mechanism is fixed in the rotor front end through the hollow disc, and the annular array laser receiving sensor on it receives laser signal in real time and transmits to signal transmission mainboard analysis, can discover the coaxality deviation in time, is convenient for maintenance adjustment, avoids the vibration aggravation, the component wear and tear because of the problem of the coaxality, prolongs the motor and the life of load equipment.

Description

Technical Field

[0001] This utility model relates to the field of explosion-proof motor equipment technology, specifically to an explosion-proof motor that is vibration-resistant. Background Technology

[0002] Explosion-proof motors are widely used in flammable and explosive environments such as coal mines, oil and gas plants, petrochemical plants, and chemical industries. However, they are prone to vibration problems during operation. Vibration can reduce winding insulation, shorten bearing life, loosen welds, cause mechanical damage to the load, reduce precision, loosen or crack anchor bolts, and cause abnormal wear of brushes and slip rings, seriously affecting the normal operation and service life of the motor. There are many reasons for vibration in explosion-proof motors, such as severe wear of the rubber on the coupling bolts between the motor and the mechanical load, or excessive tension on one side; or problems with coupling installation may also affect the alignment of the motor and load shafts, leading to vibration. Current technologies for solving vibration problems in explosion-proof motors mainly focus on passive maintenance and fault diagnosis, lacking proactive monitoring and prevention methods. For example, traditional methods typically only involve inspection and repair after significant vibration occurs, which not only increases maintenance costs but may also lead to production interruptions. Therefore, this paper proposes a vibration-resistant solution for explosion-proof motors. Utility Model Content

[0003] The purpose of this utility model is to provide a technical solution for a vibration-proof explosion-proof motor to address the shortcomings mentioned in the background art. To overcome the drawbacks and defects described in the background art, this technical solution includes the following:

[0004] The device includes an explosion-proof motor structure, wherein a coaxiality positioning mechanism is provided on the front end of the explosion-proof motor structure, and a coupling assembly is provided on the front section of the outer ring of the explosion-proof motor structure; the explosion-proof motor structure includes a motor stator, a rotor rotatably disposed in the inner cavity of the motor stator, and a front pressure cover and a rear end cover fixed to the front end face and the rear end face of the motor stator.

[0005] The coupling assembly includes a front sleeve and a rear sleeve, and a meshing disc that engages between the front sleeve and the rear sleeve. Laser emitters are embedded on the front and rear end faces of the meshing disc.

[0006] The coaxiality positioning mechanism includes a hollow disk, a signal transmission main board embedded and fixed in the inner cavity of the hollow disk, and 20-35 laser receiving sensors fixed in a ring array on the front end face of the hollow disk.

[0007] As a preferred embodiment of this utility model: the bottom surface of the motor stator is fixedly connected to the left and right sides with support feet, and the top surface of the motor stator is fixedly connected to a capacitor.

[0008] As a preferred embodiment of this utility model: a through hole is provided in the center of the front cover for the front end of the rotor to pass through, and a bearing is embedded and fixed inside the through hole.

[0009] As a preferred embodiment of this utility model, the rear end face of the hollow disk is fixedly connected to the front end face of the rotor.

[0010] As a preferred embodiment of this utility model: the hollow disk has a cavity inside for mounting a signal transmission main board, and the laser signal received by the laser receiving sensor is transmitted to the signal transmission main board.

[0011] As a preferred embodiment of this utility model: the laser receiving sensor is generally in the shape of a disk, and the outer surfaces of the laser receiving sensors are in contact with each other.

[0012] As a preferred embodiment of this utility model: the front sleeve is fitted on the driven shaft, the rear sleeve is fitted on the front section of the rotor, and fastening bolts are provided on both the front and rear sleeves.

[0013] As a preferred embodiment of this utility model: the front and rear end faces of the occlusal disc are provided with openings for the laser emitter to be embedded, and the laser emitter is arranged coaxially with the occlusal disc, the front sleeve and the rear sleeve.

[0014] The technical effects and advantages provided by this utility model in the above technical solution are as follows:

[0015] This solution utilizes a coupling assembly with a meshing disc, front and rear sleeves, and fastening bolts to stably transmit torque. The meshing disc houses a laser emitter, coaxially arranged with all components, providing a foundation for coaxiality monitoring. The coaxiality positioning mechanism is fixed to the front end of the rotor via a hollow disc. A ring array of laser receiving sensors on the disc receives laser signals in real time and transmits them to the signal transmission mainboard for analysis. This allows for timely detection of coaxiality deviations, facilitating maintenance and adjustment, preventing increased vibration and component wear due to coaxiality issues, and extending the lifespan of the motor and load equipment. Attached Figure Description

[0016] To more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the drawings used in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments recorded in this utility model. For those skilled in the art, other drawings can be obtained based on these drawings.

[0017] Figure 1 This is a schematic diagram of the overall structure of an explosion-proof motor;

[0018] Figure 2 This is a schematic diagram of the disassembled explosion-proof motor.

[0019] Figure 3 This is a schematic diagram of the rotor;

[0020] Figure 4 A schematic diagram of a coaxiality positioning mechanism;

[0021] Figure 5 This is a schematic diagram of a coupling.

[0022] Explanation of reference numerals in the attached figures:

[0023] 1. Explosion-proof motor structure; 11. Motor stator; 12. Capacitor; 13. Rotor; 14. Bearing; 15. Front cover; 16. Support foot; 17. Rear cover; 2. Coupling assembly; 21. Front sleeve; 22. Rear sleeve; 23. Engaging disc; 24. Laser emitter; 3. Coaxiality positioning mechanism; 31. Hollow disc; 32. Signal transmission main board; 33. Laser receiving sensor. Detailed Implementation

[0024] To provide a clearer explanation and description of the technical solution and implementation of this utility model, several preferred specific embodiments for implementing the technical solution of this utility model are introduced below.

[0025] The following description is exemplary in nature and is not intended to limit the scope, application, or use of this disclosure. It should be understood that in all these figures, the same or similar reference numerals indicate the same or similar parts and features. The figures are merely schematic representations of the concept and principles of embodiments of this disclosure and do not necessarily show the specific dimensions and scale of each embodiment. Specific details or structures of embodiments of this disclosure may be exaggerated in particular portions of certain figures. The disclosures of various publications, patents, and published patent specifications cited herein are incorporated herein by reference in their entirety. The technical solutions of this utility model will be clearly and completely described below in conjunction with embodiments of this utility model. Obviously, the described embodiments are only a part of the embodiments of this utility model.

[0026] Example 1: A vibration-proof explosion-proof motor. The explosion-proof motor structure 1 serves as the core of the entire motor. The motor stator 11 is cylindrical, with two symmetrically fixed feet 16 on the left and right sides of its bottom surface to support the entire motor and maintain its stable placement. A capacitor 12 is fixedly connected to the top surface of the motor stator 11. The capacitor 12 is connected to the internal circuitry of the motor via wires, providing necessary capacitive support for motor startup and operation. Inside the motor stator 11, a rotor 13 is rotatably mounted. The rotor 13 consists of a rotor core and windings, and can rotate at high speed under electromagnetic force. A front cover 15 and a rear cover 17 are fixedly connected to the front and rear ends of the motor stator 11, respectively. A through hole for the front end of the rotor 13 to pass through is provided in the center of the front cover 15. A bearing 14, made of high-quality rolling bearing, is embedded and fixed inside the through hole to reduce friction during rotor rotation and ensure smooth rotor rotation.

[0027] The coupling assembly 2 is located on the front section of the outer ring of the explosion-proof motor structure 1, and consists of a front clamping sleeve 21, a rear clamping sleeve 22, and a meshing disc 23. The front clamping sleeve 21 is fitted onto the driven shaft, and the rear clamping sleeve 22 is fitted onto the front section of the rotor 13. Both the front clamping sleeve 21 and the rear clamping sleeve 22 are equipped with fastening bolts. By tightening the fastening bolts, the front clamping sleeve 21 and the rear clamping sleeve 22 can be firmly fixed to the driven shaft and the rotor 13, respectively. The meshing disc 23 meshes between the front clamping sleeve 21 and the rear clamping sleeve 22, serving to connect and transmit torque. Openings for the laser emitter 24 are provided on both the front and rear end faces of the meshing disc 23. The laser emitter 24 is fitted into the openings, and the laser emitter 24 is coaxially arranged with the meshing disc 23, the front clamping sleeve 21, and the rear clamping sleeve 22 to ensure that the laser emitted by the laser emitter 24 can accurately reflect the coaxiality of the rotor 13 and the driven shaft.

[0028] A coaxiality positioning mechanism 3 is provided at the front end of the explosion-proof motor structure 1. The rear end face of the hollow disk 31 of the coaxiality positioning mechanism 3 is fixedly connected to the front end face of the rotor 13. A cavity is provided inside the hollow disk 31 for the signal transmission main board 32 to be embedded. The signal transmission main board 32 is embedded and fixed in the cavity for receiving and processing the signals transmitted by the laser receiving sensor 33. On the front end face of the hollow disk 31, 25 laser receiving sensors 33 are fixed in a circular array. The laser receiving sensors 33 are generally disk-shaped, and their outer surfaces are in contact with each other to form a complete receiving surface, which can receive the laser signal emitted by the laser emitter 24 from all directions. When the motor is running, the laser emitted by the laser emitter 24 is received by the laser receiving sensor 33. The received laser signal is transmitted to the signal transmission main board 32, which analyzes and processes the signal to determine whether the coaxiality of the rotor 13 and the driven shaft meets the requirements.

[0029] Example 2: Another type of vibration-resistant explosion-proof motor, whose explosion-proof motor structure 1 is similar to that of Example 1. The motor stator 11 also has support feet 16 on the left and right sides of the bottom and a capacitor 12 on the top. The rotor 13 inside the motor stator 11 is made of high-performance materials to improve the efficiency and stability of the motor. The front cover 15 and the rear cover 17 are respectively fixed to the front and rear end faces of the motor stator 11. The bearing 14 in the through hole of the front cover 15 is a specially designed bearing with better wear resistance and impact resistance, and can adapt to harsher working environments. In the coupling assembly 2, the materials of the front sleeve 21 and the rear sleeve 22 have been optimized to have higher strength and toughness. The front sleeve 21 is fitted on the driven shaft, and the rear sleeve 22 is fitted on the front section of the rotor 13, and a tight connection is achieved by fastening bolts. The meshing design of the meshing disc 23 with the front sleeve 21 and the rear sleeve 22 is more reasonable, and the meshing surface is specially treated to reduce wear and noise. The laser emitter 24 on the front and rear end faces of the occlusal disc 23 adopts a high-precision laser emission module, which makes the emitted laser more stable and accurate.

[0030] The hollow disk 31 of the coaxiality positioning mechanism 3 is connected to the front end face of the rotor 13 using a special connection method to ensure a firm connection without affecting the rotation of the rotor 13. The signal transmission main board 32 inside the hollow disk 31 integrates a more advanced signal processing chip, capable of quickly and accurately processing the signals transmitted by the laser receiving sensor 33. Thirty laser receiving sensors 33 are fixed in a circular array on the front end face of the hollow disk 31. These laser receiving sensors 33, through a special circuit layout, improve the sensitivity and accuracy of signal reception. When the motor is running, the laser receiving sensors 33 receive the laser signal emitted by the laser emitter 24 in real time and quickly transmit the signal to the signal transmission main board 32 to monitor the coaxiality of the rotor 13 and the driven shaft in a timely manner.

[0031] Example 3: In this example of a vibration-proof explosion-proof motor, regarding the explosion-proof motor structure 1, the bottom support 16 of the motor stator 11 adopts an adjustable design, which can adjust the height and level of the motor according to the actual installation environment, ensuring the stability of the motor installation. The capacitor 12 on the top of the motor stator 11 is equipped with a heat dissipation device, which can effectively reduce the temperature of the capacitor during long-term operation of the motor and extend the service life of the capacitor. The rotor 13 inside the motor stator 11 adopts a lightweight design, reducing weight while ensuring strength and improving the response speed of the motor. The sealing performance of the front cover 15 and the rear cover 17 has been optimized, which can effectively prevent dust and moisture from entering the motor and improve the explosion-proof performance of the motor. In the coupling assembly 2, the surfaces of the front sleeve 21 and the rear sleeve 22 have been treated with rust prevention to increase their corrosion resistance. The engagement disc 23 is made of elastic material, which can buffer the vibration between the rotor 13 and the driven shaft to a certain extent and reduce the impact of vibration on coaxiality. The laser emitter 24 on the front and rear end faces of the bite plate 23 has an automatic calibration function, which can automatically adjust the laser emission angle during motor operation to ensure that the laser can always accurately irradiate the laser receiving sensor 33.

[0032] The hollow disc 31 of the coaxiality positioning mechanism 3 is made of alloy material, which improves its resistance to deformation. The signal transmission main board 32 inside the hollow disc 31 has wireless transmission capability, which can transmit the monitored coaxiality data to external monitoring equipment in real time, facilitating remote monitoring by staff. On the front end face of the hollow disc 31, 35 laser receiving sensors 33 are fixed in a circular array. When the motor is running, through the cooperation of the laser receiving sensors 33 and the signal transmission main board 32, the coaxiality between the rotor 13 and the driven shaft can be monitored in real time and accurately. Once the coaxiality deviation exceeds the set value, the system will issue an alarm in time so that staff can take timely measures to adjust it.

[0033] Based on the above-described preferred technical solution, the workflow of this technical solution is explained as follows: At the moment the motor starts, the external power supply charges the capacitor 12, and the capacitor 12 releases the stored electrical energy, forming an initial magnetic field in the winding of the motor stator 11. This magnetic field interacts with the magnetic field generated by the winding of the rotor 13, generating electromagnetic torque according to the principle of electromagnetic induction, driving the rotor 13 to rotate at high speed around its own axis in the inner cavity of the motor stator 11. The bearing 14 reduces the friction between the rotor 13 and the through hole of the front cover 15, ensuring that the rotor 13 rotates smoothly. The front cover 15 and the rear cover 17 form a closed protection for the inner cavity of the motor stator 11, preventing dust, moisture, etc. from entering and affecting the motor performance. The support leg 16 supports the motor and maintains the stability of the motor during operation.

[0034] When the motor drives the rotor 13 to rotate, the coupling assembly 2 begins to work. The rear clamp 22 is tightly fitted onto the front section of the rotor 13 and fixed with fastening bolts, rotating synchronously with the rotor 13; the front clamp 21 is fitted onto the driven shaft and also locked with fastening bolts, the driven shaft being connected to the external load equipment. The engagement disc 23 is engaged between the front clamp 21 and the rear clamp 22, its specially designed engagement structure fitting tightly with both. When the rotor 13 rotates, the engagement disc 23 effectively transmits the torque of the rotor 13 to the driven shaft, driving the load equipment to operate. During this process, the coaxiality positioning mechanism 3 plays a crucial monitoring role. The rear end face of the hollow disc 31 is fixedly connected to the front end face of the rotor 13 and rotates together with the rotor 13. The signal transmission mainboard 32 embedded in the inner cavity of the hollow disc 31 is in standby mode, ready to receive and process signals. 20-35 laser receiving sensors 33 are fixed in a ring array on the front end face of the hollow disk 31. Their outer surfaces are in contact with each other to form a complete receiving surface, ready to receive laser signals at any time. Laser emitters 24 embedded in the front and rear end faces of the engagement plate 23 are arranged coaxially with the engagement plate 23, the front sleeve 21, and the rear sleeve 22. They continuously emit laser beams during motor operation, and the laser beams propagate in a specific direction.

[0035] When the rotor 13 and the driven shaft are well coaxial, the laser beam emitted by the laser emitter 24 can accurately illuminate the laser receiving sensor 33. After receiving the laser signal, each laser receiving sensor 33 converts the optical signal into an electrical signal and transmits the electrical signal to the signal transmission main board 32 according to the preset circuit layout and signal transmission rules. The signal transmission main board 32 performs comprehensive analysis and processing on the received multiple electrical signals, and determines the coaxiality of the rotor 13 and the driven shaft by comparing parameters such as the intensity and time of the signals received by each laser receiving sensor 33. If the analysis results show that the coaxiality is within the normal range, the signal transmission main board 32 remains in standby mode and does not send any signals to the outside.

[0036] However, during motor operation, various factors such as sudden load changes and prolonged wear can cause a misalignment between the rotor 13 and the driven shaft. This alters the position and intensity of the laser beam emitted by the laser emitter 24 as it strikes the laser receiver sensor 33. At this time, some laser receiver sensors 33 may receive a weaker or no laser signal. The signal transmission motherboard 32 identifies the misalignment based on the received abnormal electrical signal and generates corresponding data signals according to a preset program. These data signals are encoded and modulated by the internal circuitry of the signal transmission motherboard 32, converting them into a format suitable for transmission. If the signal transmission motherboard 32 has wireless transmission capabilities, the data signals will be sent to external monitoring equipment via a wireless module; otherwise, they can be transmitted to the monitoring equipment via a wired connection. Upon receiving the data signals, the monitoring equipment decodes and displays them. Based on the displayed information, operators determine the degree and direction of the misalignment and take timely adjustment measures, such as fine-tuning the motor installation position or re-tightening or replacing the coupling assembly 2, to ensure the safe and stable operation of the motor and the load equipment.

[0037] The foregoing description only illustrates certain exemplary embodiments of the present invention. Undoubtedly, those skilled in the art can modify the described embodiments in various ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and descriptions are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A vibration-resistant explosion-proof motor, comprising an explosion-proof motor structure (1), characterized in that: The explosion-proof motor structure (1) is provided with a coaxiality positioning mechanism (3) at the front end, and a coupling assembly (2) is provided on the front section of the outer ring of the explosion-proof motor structure (1). The explosion-proof motor structure (1) includes a motor stator (11), a rotor (13) rotatably disposed in the inner cavity of the motor stator (11), and a front cover (15) and a rear cover (17) fixed to the front end face and the rear end face of the motor stator (11). The coupling assembly (2) includes a front sleeve (21) and a rear sleeve (22), and a meshing disc (23) engaged between the front sleeve (21) and the rear sleeve (22). Laser emitters (24) are embedded on the front and rear end faces of the meshing disc (23). The coaxiality positioning mechanism (3) includes a hollow disk (31), a signal transmission main board (32) embedded and fixed in the inner cavity of the hollow disk (31), and 20-35 laser receiving sensors (33) fixed in a ring array on the front end face of the hollow disk (31).

2. The vibration-resistant explosion-proof motor according to claim 1, characterized in that: The bottom surface of the motor stator (11) is fixedly connected to the left and right sides of the bottom surface, and a capacitor (12) is fixedly connected to the top surface of the motor stator (11).

3. The vibration-resistant explosion-proof motor according to claim 1, characterized in that: The front cover (15) has a through hole in the center for the front end of the rotor (13) to pass through, and a bearing (14) is fixedly embedded inside the through hole.

4. The vibration-resistant explosion-proof motor according to claim 1, characterized in that: The rear end face of the hollow disk (31) is fixedly connected to the front end face of the rotor (13).

5. The vibration-resistant explosion-proof motor according to claim 1, characterized in that: The hollow disk (31) has a cavity inside which the signal transmission main board (32) is embedded, and the laser signal received by the laser receiving sensor (33) is transmitted to the signal transmission main board (32).

6. The vibration-resistant explosion-proof motor according to claim 1, characterized in that: The laser receiving sensor (33) is generally disc-shaped, and the outer surfaces of the laser receiving sensor (33) are in contact with each other.

7. The vibration-resistant explosion-proof motor according to claim 1, characterized in that: The front sleeve (21) is fitted on the driven shaft, and the rear sleeve (22) is fitted on the front section of the rotor (13), and fastening bolts are provided on both the front sleeve (21) and the rear sleeve (22).

8. The vibration-resistant explosion-proof motor according to claim 1, characterized in that: The front and rear ends of the occlusal disc (23) are provided with openings for the laser emitter (24) to be embedded, and the laser emitter (24) is arranged coaxially with the occlusal disc (23), the front sleeve (21) and the rear sleeve (22).

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