Air compressor motor protection device

Abstract

The utility model belongs to air compressor motor protection technical field, specifically disclose a kind of air compressor motor protection device, including electric cabinet, the electric cabinet one side upper portion is equipped with opening, electric cabinet inner wall one side corresponding opening place is connected with installation frame, the installation frame inner wall upper end and lower end are connected with mounting mechanism, two The mounting mechanism between being connected with screen, the screen both sides are connected with the installation frame inner wall both sides respectively, the utility model is dustproof by screen, fan heat dissipation and the synergistic effect of mounting mechanism, guarantee air compressor motor stable operation, avoid abnormal damage.

Description

Technical Field

[0001] This utility model belongs to the field of air compressor motor protection technology, and specifically relates to an air compressor motor protection device. Background Technology

[0002] During the operation of an air compressor, the motor, as its core component, often poses safety hazards due to problems such as motor aging, motor phase loss, and abnormal power supply. To solve these problems, it is necessary to install a motor protection device on the air compressor. By connecting a motor protector in parallel at the main motor terminal and connecting a time relay and an emergency stop switch in series, the operating status of the motor can be directly detected and protected to prevent the fault from escalating and improve the safety of equipment operation.

[0003] Existing motor protectors and relays are mostly installed using screws. This method is not only cumbersome and time-consuming, but also relies on manual positioning, which can easily lead to misalignment of wiring terminals and increase the risk of poor circuit contact. In terms of heat dissipation, motor protectors and relays are usually directly connected to the wall of the electrical cabinet, which makes it easy for heat to accumulate. The heat generated by the motor protector and time relay during operation is difficult to dissipate effectively, which can keep the components at a high temperature for a long time, thereby affecting the detection accuracy, accelerating component aging, and even causing equipment failure, which has a significant impact on workshop production. Utility Model Content

[0004] The purpose of this utility model is to address the shortcomings of existing technologies by proposing an air compressor motor protection device.

[0005] To achieve the above objectives, this utility model provides an air compressor motor protection device, including an electrical cabinet. An opening is provided on the upper part of one side of the electrical cabinet. A mounting frame is connected to the opening on one side of the inner wall of the electrical cabinet. Mounting mechanisms are connected to the upper and lower ends of the inner wall of the mounting frame. A screen is connected between the two mounting mechanisms. The two sides of the screen are connected to the two sides of the inner wall of the mounting frame. Each mounting mechanism includes a first housing. A rotating rod is connected to the middle of one side of the first housing. One end of the rotating rod extends through to one side of the first housing and is connected to a limit plate. A fixing frame is connected to the middle of the inner wall of the mounting frame. A fan body is connected inside the fixing frame. Mounting plates are connected to both sides of the mounting frame. A motor protector is connected to the upper part of one side of each mounting plate. The motor protector is located on the upper part of one side of the mounting frame. A relay is connected to the lower part of one side of each mounting plate. A circuit body is connected to one side of the inner wall of the electrical cabinet. In the above technical solution, through holes are further provided on both sides of the first housing corresponding to the rotating rod, the rotating rod is located inside the through holes, a second housing is uniformly connected to one side of the first housing, a sliding rod is connected to the middle of one side of the inner wall of the two second housings, a buffer spring is sleeved on one side of the outer wall of the multiple sliding rods, and one end of the multiple buffer springs is respectively connected to one side of the inner wall of the two second housings.

[0006] In the above technical solution, further, one end of each of the two buffer springs and one end of the other two buffer springs are connected to a sliding plate. The two sliding plates slide on the outer wall of the multiple sliding rods respectively. The two sliding plates are respectively provided with connection ports at the multiple sliding rods. The multiple sliding rods are respectively located inside the multiple connection ports. In the above technical solution, further, an electric telescopic rod is connected to the middle of one side of the inner wall of the first housing. One end of the two electric telescopic rods extends through to one side of the first housing and extends through to the inside of the two second housings respectively. One end of the two electric telescopic rods is connected to the middle of one side of the two slide plates respectively. In the above technical solution, a connecting block is further connected to the upper part of one side of the two slide plates. The two connecting blocks extend through to one side of the two second shells respectively. A connecting ring is connected to the lower end of the two connecting blocks. The shape of the lower end of the connecting block matches the shape of the upper end of the connecting ring. The shape of the connecting ring is a semi-arc structure. In the above technical solution, a connecting groove is further provided on one side of the connecting ring, and a slider is slidably connected inside the connecting groove. The cross-sectional shape of the connecting groove and the cross-sectional shape of the slider are both convex structures, and one end of the slider is connected to one side of the limiting plate.

[0007] In the above technical solution, furthermore, a fixing block is connected to one side of the inner wall of the electrical cabinet corresponding to the lower part of the mounting frame, and a roller is rotatably connected between the two fixing blocks, with the upper end of the roller contacting the lower end of the mounting frame.

[0008] Compared with the prior art, the present invention has the following beneficial effects: Through the cooperation of the mounting frame and the mounting mechanism, the mounting frame inside the electrical cabinet can be quickly disassembled and reliably fixed. The electric telescopic rod drive and buffer spring in the mounting mechanism are adaptively adjusted, which can maintain a stable connection under vibration or impact environment, effectively preventing loosening or displacement. At the same time, the screen effectively blocks external dust, ensuring the cleanliness of the inside of the electrical cabinet and extending the service life of the equipment.

[0009] The fan body inside the fixed frame, together with the ventilation design of the screen, creates a forced convection cooling effect, which significantly reduces the internal temperature of the electrical cabinet and prevents electronic components from failing due to overheating. The roller structure facilitates the installation and positioning of the mounting frame, ensuring that electrical components can still operate stably under harsh conditions. It significantly improves the heat dissipation efficiency of relays and motor protectors, making it suitable for long-term use in industrial environments. Attached Figure Description

[0010] Figure 1 This is a schematic diagram of the overall structure of the device proposed in this utility model; Figure 2 This is a schematic diagram of the opening structure proposed in this utility model; Figure 3 This is a schematic diagram of the installation structure of the relay proposed in this utility model; Figure 4 This is a schematic diagram of the mounting structure of the mounting plate proposed in this utility model; Figure 5 This is a schematic diagram of the installation structure of the fan body proposed in this utility model; Figure 6 This is a schematic diagram of the installation structure of the connecting ring proposed in this utility model; Figure 7 This is a schematic diagram of the installation structure of the limiting plate proposed in this utility model; Figure 8 The present utility model proposes Figure 7 A magnified structural diagram of A in the middle; Figure 9 This is a schematic diagram of the installation structure of the connecting block proposed in this utility model.

[0011] In the diagram: 1. Electrical cabinet; 2. Opening; 3. Mounting frame; 4. First housing; 5. Rotating rod; 6. Limiting plate; 7. Screen; 8. Second housing; 9. Slide rod; 10. Buffer spring; 11. Slide plate; 12. Electric telescopic rod; 13. Connecting block; 14. Connecting ring; 15. Slider; 16. Fixing frame; 17. Fan body; 18. Mounting plate; 19. Motor protector; 20. Relay; 21. Circuit body; 22. Fixing block; 23. Idler roller. Detailed Implementation To better understand the above-mentioned objectives, features and advantages of this utility model, the present utility model will be further described in detail below with reference to the accompanying drawings and specific embodiments.

[0012] like Figures 1-9 The image shows a protection device for an air compressor motor.

[0013] Example 1 The device includes an electrical cabinet 1, with an opening 2 on the upper part of one side. A mounting frame 3 is connected to the inner wall of the electrical cabinet 1 at the opening 2. Mounting mechanisms are connected to the upper and lower ends of the inner wall of the mounting frame 3. A screen 7 is connected between the two mounting mechanisms. The screen 7 can filter the gas entering the electrical cabinet 1. The two sides of the screen 7 are connected to the inner walls of the mounting frame 3 respectively. Mounting plates 18 are connected to both sides of the mounting frame 3. A motor protector 19 is connected to the upper part of one side of the two mounting plates 18. The motor protector 19 is located on the upper part of one side of the mounting frame 3. A relay 20 is connected to the lower part of one side of the two mounting plates 18. The relay 20 is located on the lower part of one side of the mounting frame 3. A circuit body 21 is connected to one side of the inner wall of the electrical cabinet 1. The mounting frame 3 is detachably fixed to the inside of the opening 2 by the mounting mechanism, forming an installation space. The mounting frame 3 is equipped with mounting mechanisms at both the top and bottom to ensure that it can maintain a stable connection even under vibration. The screen 7 is horizontally tensioned in the middle of the mounting frame 3 to effectively block external dust, insects and other foreign objects from entering the cabinet, while ensuring airflow. The motor protector 19 is installed on the upper part of the mounting plate 18 to monitor the motor's operating status in real time (such as overload, phase loss, short circuit, etc.) and is linked to the relay 20 through hard wiring. The relay 20 is arranged on the lower part of the mounting plate 18 for easy wiring connection and maintenance. The circuit body 21 is fixed to the inner wall of the electrical cabinet 1, forming a complete electrical protection system with the motor protector 19 and the relay 20 to ensure that the equipment can quickly cut off the power supply in abnormal situations. Example 2 A fixed frame 16 is connected to the middle of the inner wall of the mounting frame 3. A fan body 17 is connected inside the fixed frame 16. A fixed block 22 is connected to one side of the inner wall of the electrical cabinet 1, corresponding to the lower part of the mounting frame 3. A roller 23 is rotatably connected between the two fixed blocks 22. The upper end of the roller 23 contacts the lower end of the mounting frame 3. The upper surface of the idler roller 23 is in linear contact with the bottom of the mounting frame 3. During installation, the horizontal position of the mounting frame 3 can be adjusted by rolling. At the same time, it bears part of the frame weight, reducing installation friction resistance. After the mounting frame 3 is pushed into place, the idler roller 23 still serves as an auxiliary support point, sharing the vertical load on the installation mechanism and improving the structural stability for long-term use.

[0014] Example 3 The mounting mechanism includes a first housing 4. A rotating rod 5 is connected to the middle of one side of the first housing 4. One end of the rotating rod 5 extends through to one side of the first housing 4, and a limit plate 6 is connected to the other end of the rotating rod 5. Through holes are opened on both sides of the first housing 4 corresponding to the rotating rod 5, and the rotating rod 5 is located inside the through holes. Two second housings 8 are evenly connected to one side of the first housing 4. There are four sets of second housings 8. The upper ends of two second housings 8 are in contact with the upper end of the inner wall of the opening 2, and the lower ends of the other two second housings 8 are in contact with the lower end of the inner wall of the opening 2. A sliding rod 9 is connected to the middle of one side of the inner wall of the two second housings 8. A buffer spring 10 is sleeved on one side of the outer wall of the multiple sliding rods 9. One end of the multiple buffer springs 10 is connected to one side of the inner wall of the two second housings 8, and one end of each of the two buffer springs 10 and the other two buffer springs 10 are connected to a sliding plate 11. The two sliding plates 11 slide on the outer wall of the multiple sliding rods 9, and the two sliding plates 11 are respectively opened at the multiple sliding rods 9. The multiple sliding rods 9 are respectively located at the multiple connecting... Inside the interface, an electric telescopic rod 12 is connected to the middle of one side of the inner wall of the first housing 4. One end of each electric telescopic rod 12 extends through to one side of the first housing 4 and through to the inside of the two second housings 8. One end of each electric telescopic rod 12 is connected to the middle of one side of each of the two sliding plates 11. A connecting block 13 is connected to the upper part of one side of each of the two sliding plates 11. The two connecting blocks 13 extend through to one side of each of the two second housings 8. A groove is provided in the second housing 8 corresponding to the connecting block 13. The connecting block 13 is located inside the groove. A connecting ring 14 is connected to the lower end of each of the two connecting blocks 13. The shape of the lower end of the connecting block 13 matches the shape of the upper end of the connecting ring 14. The shape of the connecting ring 14 is a semi-arc structure. A connecting groove is provided on one side of the connecting ring 14. A slider 15 is slidably connected inside the connecting groove. The cross-sectional shape of the connecting groove and the cross-sectional shape of the slider 15 are both convex structures to prevent the slider 15 from falling off. One end of the slider 15 is connected to one side of the limiting plate 6. The rotating rod 5 passes through the through holes on both sides of the first housing 4, and the end is welded with a limiting plate 6. The locking direction can be switched by rotation. Four sets of second housings 8 are symmetrically distributed, with two sets contacting the top of the opening 2 and the other two sets contacting the bottom, forming multi-point positioning. The electric telescopic rod 12 pushes the slide plate 11 to move, and then drives the connecting ring 14 to move through the connecting block 13. The semi-arc structure of the connecting ring 14 matches the rotation trajectory of the rotating rod 5, ensuring that the limiting plate 6 does not shift during rotation and pressing.

[0015] Working principle: When using the device, the installation operation is performed first. The mounting frame 3 is placed above the roller 23. The roller 23 can help determine the height of the mounting frame 3. The position of the mounting frame 3 is adjusted laterally so that it is located on one side of the opening 2. Then, the device is pushed towards the inner wall of the electrical cabinet 1 until one side of the mounting frame 3 contacts the cabinet wall. At this time, multiple second housings 8 are inserted into the opening 2, laying the foundation for subsequent fixing work. Next, the installation mechanism is activated for fixation. The core of the installation mechanism is to ensure that the installation frame 3 is securely installed on the electrical cabinet 1. The electric telescopic rod 12 extends, pushing the slide plate 11 to slide along the slide rod 9, compressing the buffer spring 10. After being compressed, the buffer spring 10 stores elastic potential energy. The sliding of the slide plate 11 causes the connecting block 13, connecting ring 14, limiting plate 6, and rotating rod 5 to move to one side, making the limiting plate 6 move away from its initial position. By rotating the rotating rod 5, the limiting plate 6 is rotated 180 degrees. During this process, the slider 15 slides inside the connecting groove in the connecting ring 14. The convex structure design of the connecting groove and the slider 15... This design ensures the stability of the limiting plate 6 during rotation and effectively prevents the slider 15 from coming off. After rotation, the electric telescopic rod 12 retracts, and the buffer spring 10 releases its stored elastic potential energy, pushing the limiting plate 6 into close contact with one side of the electrical cabinet 1. The spring's rebound force forms a pre-tightening force, firmly locking the mounting frame 3 onto the top of the electrical cabinet 1. This design allows the mounting mechanism to adapt to the slight deformation of the electrical cabinet 1 and always maintain a reliable connection. Even if vibration occurs during device operation, the mounting mechanism can absorb the vibration energy through the elastic deformation of the buffer spring 10, preventing the mounting frame 3 from loosening or shifting. After installation, both the motor protector 19 and the relay 20 are installed on one side of the mounting frame 3. During operation, the motor protector 19 monitors the motor's operating status in real time. Once it detects an abnormal situation such as overload, short circuit, or undervoltage, it promptly sends a signal to the relay 20. After receiving the signal, the relay 20 quickly disconnects the circuit body 21 from the motor to protect the motor. The screen 7 is installed inside the mounting frame 3, which can isolate external dust and debris, creating a normal operating environment for the internal components of the electrical cabinet 1. When the screen 7 encounters external vibration or airflow impact, its own structural design can resist these interferences to a certain extent and ensure normal dustproof function. In the heat dissipation process, the fan body 17 in the middle of the inner wall of the mounting frame 3 operates continuously. The fan body 17 draws in outside air through the opening 2, filters it through the screen 7, and blows it towards the motor protector 19 and the relay 20, accelerating the air circulation inside the electrical cabinet 1 and promptly removing the heat generated by the electrical components. The roller 23 provides strong support for the mounting frame 3. The contact between the four sets of second housings 8 and the inner wall of the opening 2 allows the mounting frame 3 to reduce the impact of vibration under the airflow generated by the operation of the fan body 17, maintain a stable state, ensure that the fan operates normally without interference, and maintain a good heat dissipation effect. The mounting frame 3 separates the motor protector 19 and the relay 20 from the inner wall of the electrical cabinet 1, forming a heat dissipation space, further ensuring its heat dissipation effect and keeping the inside of the electrical cabinet 1 at a suitable operating temperature.

[0016] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. An air compressor motor protection device, comprising an electrical cabinet (1), characterized in that, An opening (2) is provided on the upper part of one side of the electrical cabinet (1). A mounting frame (3) is connected to one side of the inner wall of the electrical cabinet (1) corresponding to the opening (2). The upper and lower ends of the inner wall of the mounting frame (3) are connected to mounting mechanisms. A screen (7) is connected between the two mounting mechanisms. The two sides of the screen (7) are connected to the two sides of the inner wall of the mounting frame (3). The mounting mechanism includes a first housing (4). A rotating rod (5) is connected to the middle of one side of the first housing (4). One end of the rotating rod (5) extends through to one side of the first housing (4). A limit plate is connected to one end of the rotating rod (5). (6) A fixed frame (16) is connected to the middle of the inner wall of the mounting frame (3). A fan body (17) is connected inside the fixed frame (16). Mounting plates (18) are connected to both sides of the mounting frame (3). A motor protector (19) is connected to the upper part of one side of the two mounting plates (18). The motor protector (19) is located on the upper part of one side of the mounting frame (3). A relay (20) is connected to the lower part of one side of the two mounting plates (18). The relay (20) is located on the lower part of one side of the mounting frame (3). A circuit body (21) is connected to one side of the inner wall of the electrical cabinet (1).

2. The air compressor motor protection device according to claim 1, characterized in that, The first housing (4) has through holes on both sides corresponding to the rotating rod (5). The rotating rod (5) is located inside the through hole. The first housing (4) is evenly connected to a second housing (8) on one side. The inner wall of the two second housings (8) is connected to a sliding rod (9) in the middle. The outer wall of the multiple sliding rods (9) is fitted with a buffer spring (10). One end of the multiple buffer springs (10) is connected to one side of the inner wall of the two second housings (8).

3. The air compressor motor protection device according to claim 2, characterized in that, Two of the buffer springs (10) are connected to a sliding plate (11) at one end and the other two buffer springs (10) at the other end. The two sliding plates (11) slide on the outer wall of multiple sliding rods (9). The two sliding plates (11) are respectively provided with connection ports at multiple sliding rods (9). The multiple sliding rods (9) are respectively located inside multiple connection ports.

4. The air compressor motor protection device according to claim 2, characterized in that, Electric telescopic rods (12) are connected to the middle of one side of the inner wall of the first housing (4). One end of each of the two electric telescopic rods (12) extends through to one side of the first housing (4) and through to the interior of the two second housings (8). One end of each of the two electric telescopic rods (12) is connected to the middle of one side of the two slide plates (11).

5. The air compressor motor protection device according to claim 4, characterized in that, Two of the slide plates (11) are connected to a connecting block (13) on one side of the upper part. The two connecting blocks (13) extend through to one side of the two second shells (8). The lower ends of the two connecting blocks (13) are connected to a connecting ring (14). The shape of the lower end of the connecting block (13) matches the shape of the upper end of the connecting ring (14). The connecting ring (14) is set in a semi-arc structure.

6. The air compressor motor protection device according to claim 5, characterized in that, A connecting groove is provided on one side of the connecting ring (14), and a slider (15) is slidably connected inside the connecting groove. The cross-sectional shape of the connecting groove and the cross-sectional shape of the slider (15) are both convex structures. One end of the slider (15) is connected to one side of the limiting plate (6).

7. The air compressor motor protection device according to claim 1, characterized in that, The electrical cabinet (1) has a fixing block (22) connected to the bottom of the mounting frame (3) on one side of its inner wall. A roller (23) is rotatably connected between the two fixing blocks (22). The upper end of the roller (23) contacts the lower end of the mounting frame (3).

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