Industrial motor overload protection device with fault self-diagnosis

Abstract

The utility model provides a kind of industrial motor overload protection device with fault self-diagnosis, it is related to motor overload protection equipment technical field, including: overload protector main part and controller body, the overload protector main part below is equipped with controller body, by adjusting block and support block and limit slide and limit sleeve mutually cooperate, and utilize the elastic action of compression spring, make fixed base and connecting frame connection more stable, effectively avoid the resonance of controller body and overload protector main part and motor causes locking bolt loosening, improve the reliability when equipment operates, the existing industrial motor overload protection device when using, among them, overload protector and controller continue traditional screw pressure joint fixing technology, when industrial motor is used for a long time, connecting screw is prone to loosening under the action of motor equipment itself vibration, although there is the auxiliary fastening effect of pad, but still there is loosening phenomenon, affect the reliability of equipment use problem.

Description

Technical Field

[0001] This utility model relates to the technical field of motor overload protection equipment, and in particular to an industrial motor overload protection device with fault self-diagnosis. Background Technology

[0002] Industrial motor overload protection devices are key equipment used to prevent industrial motors from being damaged due to overload operation. Motor overload usually refers to the actual operating current exceeding the rated current, leading to overheating of the windings, aging of the insulation, or even burnout. The protection device monitors the operating status of the motor (such as current, temperature, etc.) and cuts off the power supply or issues an alarm in time when an overload occurs.

[0003] Existing industrial motor overload protection devices still rely on traditional screw-pressing technology for fixing the overload protector and controller. When industrial motors are used for a long time, the connecting screws are prone to loosening due to the vibration of the motor itself. Although there is a washer to assist in tightening, loosening still occurs, affecting the reliability of the equipment. Utility Model Content

[0004] This utility model relates to an industrial motor overload protection device with fault self-diagnosis. The device uses an adjusting block and a support block in conjunction with a limit slide rod and a limit sleeve, and utilizes the elasticity of a compression spring to make the connection between the fixed base and the connecting frame more stable. This effectively prevents the controller body and the overload protector body from resonating with the motor, which could cause the locking bolts to loosen and improves the reliability of the equipment during operation.

[0005] This utility model provides an industrial motor overload protection device with fault self-diagnosis, specifically including: an overload protector body and a controller body, wherein the controller body is provided below the overload protector body; a fixed base is provided at the bottom rear side of the overload protector body; and a connecting frame is provided at the top of the controller body, and the connecting frame corresponds to the fixed base. The internal processing system of the overload protector and controller includes: a signal acquisition module, a signal conditioning module, a microprocessor module, a protection execution module, a human-machine interface module, and a communication module. The signal acquisition module is used to acquire the motor's operating parameters in real time, including three-phase current, voltage, and temperature signals. The signal conditioning module is connected to the signal acquisition module and is used to filter, amplify, and perform analog-to-digital conversion on the acquired analog signals. The microprocessor module is connected to the signal conditioning module and is used to determine whether an overload has been triggered and to run a fault self-diagnosis program. The communication module is used to transmit real-time data and fault information to an external control system.

[0006] Furthermore, the overload protector body has a mounting base at the rear, and a fixed base is located at the bottom of the mounting base. The mounting base is connected to the industrial motor. The bottom of the overload protector body has a connection slot and two limiting slots, which are distributed symmetrically on the left and right sides.

[0007] Furthermore, the controller body has a display screen at the front, LED indicator lights and control buttons below the display screen, a protective cover at the top of the controller body, a connecting bracket at the top of the controller body, and the connecting bracket is connected to the connecting slot in a coupled plug-in manner. The top of the controller body has two docking plugs, and the docking plugs are engaged with the limit slots.

[0008] Furthermore, the fixed base has an installation groove at the bottom, through grooves on the left and right side walls of the installation groove, an adjustment block in the installation groove, and two chamfers on the bottom edge of the adjustment block. Limiting sliders are provided on the left and right sides of the adjustment block, and the adjustment block is slidably connected to the through groove through the limiting sliders.

[0009] Furthermore, the vertical plate of the connecting frame is provided with locking bolts, and the locking bolts are connected to the rear wall of the mounting groove, and the front end of the locking bolts is in contact with the adjusting block. The horizontal plate of the connecting frame is provided with two mounting columns, and the two mounting columns are distributed symmetrically. A support block is provided above the mounting columns. The top of the mounting column is equipped with a limiting slide rod, and a compression spring is fitted on the limiting slide rod. The support block has a limiting sleeve at the bottom, a fixing ring at the bottom end of the limiting sleeve, a mounting post that slides into the limiting sleeve, and a compression spring that supports the fixed ring and the mounting post. The top edge of the support block has a chamfer, and the chamfer of the support block matches the chamfer of the adjusting block.

[0010] Furthermore, the fault self-diagnosis program of the protection execution module includes: dynamically calculating the heat accumulation value based on the ratio of real-time current to rated current, and triggering a graded alarm or disconnection operation when the heat accumulation value reaches a threshold.

[0011] Furthermore, the human-machine interaction module includes: a display screen for displaying current, voltage, fault codes, and historical records; LED indicator lights are used to indicate power, operation, and fault status; The control buttons are used for parameter setting and manual reset.

[0012] This utility model provides an industrial motor overload protection device with fault self-diagnosis, which has the following beneficial effects: In this invention, a fixed base and a connecting frame are connected and locked by a locking bolt. At the same time, the locking bolt pushes the adjusting block to slide forward along the through groove. The adjusting block and the support block cooperate with the limiting slide rod and the limiting sleeve. The elasticity of the compression spring makes the connection between the fixed base and the connecting frame more stable, effectively preventing the controller body and the overload protector body from resonating with the motor and causing the locking bolt to loosen, thus improving the reliability of the equipment during operation.

[0013] Furthermore, the processing system of this utility model is integrated into a single pluggable module, which supports hot replacement and automatically synchronizes motor parameters after replacement. Moreover, when the protection logic execution module detects a serious fault, it prioritizes direct triggering of disconnection through hardware circuitry, independent of the software control of the microprocessor module, ensuring that the protection function is not lost even in the most extreme cases. Attached Figure Description

[0014] To more clearly illustrate the technical solutions of the embodiments of this utility model, the accompanying drawings of the embodiments will be briefly described below.

[0015] The accompanying drawings described below are only related to some embodiments of the present invention and are not intended to limit the scope of the present invention.

[0016] In the attached diagram: Figure 1 This shows a schematic diagram of the overall axial view structure of this application; Figure 2 A schematic diagram of the overload protector body and the fixed base structure of this application is shown; Figure 3 A schematic diagram of the controller body and connecting frame structure of this application is shown; Figure 4 A schematic diagram of the fixed base and connecting frame structure of this application is shown; Figure 5 This application shows Figure 4 The resulting diagram illustrates the split state structure; Figure 6 A block diagram of the processing system modules of this application is shown.

[0017] List of reference numerals in the attached diagram: 1. Overload protector body; 101. Mounting base; 102. Connecting slot; 103. Limiting slot; 2. Controller body; 201. Display screen; 202. LED indicator; 203. Control button; 204. Protective cover; 205. Connecting bracket; 206. Connecting plug; 3. Fixed base; 301. Mounting slot; 302. Through slot; 303. Adjusting block; 304. Limiting slider; 4. Connecting bracket; 401. Locking bolt; 402. Mounting column; 4021. Limiting slide bar; 4022. Compression spring; 403. Support block; 4031. Limiting sleeve; 4032. Fixing ring. Detailed Implementation

[0018] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions of the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some, not all, of the embodiments of this utility model. Based on the described embodiments of this utility model, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of this utility model.

[0019] Example 1: Please refer to Figures 1 to 6 : This utility model proposes an industrial motor overload protection device with fault self-diagnosis, including: an overload protector body 1 and a controller body 2, with the controller body 2 located below the overload protector body 1; a fixed base 3 located at the bottom rear side of the overload protector body 1; and a connecting frame 4 located on the top of the controller body 2, with the connecting frame 4 corresponding to the fixed base 3. The internal processing system of the overload protector body 1 and the controller body 2 includes: a signal acquisition module, a signal conditioning module, a microprocessor module, a protection execution module, a human-machine interface module, and a communication module. The signal acquisition module is used to acquire the motor's operating parameters in real time, including three-phase current, voltage, and temperature signals. The signal conditioning module is connected to the signal acquisition module and is used to filter, amplify, and perform analog-to-digital conversion on the acquired analog signals. The microprocessor module is connected to the signal conditioning module and is used to determine whether an overload has been triggered and to run a fault self-diagnosis program. The communication module is used to transmit real-time data and fault information to the external control system. The overload protector body 1 has a mounting base 101 at the rear, and a fixed base 3 is located at the bottom of the mounting base 101. The mounting base 101 is connected to the industrial motor. The overload protector body 1 has a connection slot 102 at the bottom and two limiting slots 103 at the bottom. The two limiting slots 103 are distributed symmetrically on the left and right sides. The controller body 2 has a display screen 201 on the front, an LED indicator 202 and a control button 203 below the display screen 201, a protective cover 204 on the top of the controller body 2, a connecting bracket 205 on the top of the controller body 2, and the connecting bracket 205 is connected to the connecting slot 102 in a coupled plug-in manner. The controller body 2 has two docking plugs 206 on the top, and the docking plugs 206 are engaged with the limit slot 103.

[0020] In this embodiment, as Figures 2 to 5 As shown, the bottom of the fixed base 3 is provided with an installation groove 301, the left and right side walls of the installation groove 301 are provided with through grooves 302, the installation groove 301 is provided with an adjustment block 303, and the bottom edge of the adjustment block 303 is provided with two chamfers. The left and right sides of the adjustment block 303 are provided with limiting sliders 304, and the adjustment block 303 is slidably connected to the through groove 302 through the limiting sliders 304. The vertical plate of the connecting frame 4 is provided with a locking bolt 401, and the locking bolt 401 is connected to the rear wall of the mounting groove 301. The front end of the locking bolt 401 is in contact with the adjusting block 303. The horizontal plate of the connecting frame 4 is provided with two mounting posts 402, and the two mounting posts 402 are distributed symmetrically. A support block 403 is provided above the mounting posts 402. The top of the mounting post 402 is provided with a limiting slide rod 4021, and a compression spring 4022 is fitted on the limiting slide rod 4021. The support block 403 has a limiting sleeve 4031 at its bottom, and a fixing ring 4032 at the bottom end of the limiting sleeve 4031. The mounting post 402 is slidably inserted into the limiting sleeve 4031, and the compression spring 4022 is supported between the fixing ring 4032 and the mounting post 402. The top edge of the support block 403 has a chamfer, and the chamfer of the support block 403 matches the chamfer of the adjusting block 303. In this utility model, the fixed base 3 and the connecting frame 4 are connected and locked by the locking bolt 401. At the same time, the locking bolt 401 pushes the adjusting block 303 to slide forward along the through groove 302. The adjusting block 303 and the support block 403 cooperate with the limiting slide rod 4021 and the limiting sleeve 4031, and the elasticity of the compression spring 4022 makes the connection between the fixed base 3 and the connecting frame 4 more stable.

[0021] Example 2, based on Example 1, such as Figure 6 As shown, the fault self-diagnosis program of the protection execution module includes: dynamically calculating the heat accumulation value based on the ratio of real-time current to rated current, and triggering a graded alarm or disconnection operation when the heat accumulation value reaches the threshold. The human-machine interaction module includes: a display screen 201 for displaying current, voltage, fault codes, and historical records; LED indicator 202 is used to indicate power, operation, and fault status; The control button 203 is used for parameter setting and manual reset. The processing system of this utility model is integrated into a single pluggable module, which supports hot replacement and automatically synchronizes the motor parameters after replacement. Moreover, when the protection logic execution module detects a serious fault, it prioritizes direct triggering of disconnection through hardware circuitry, independent of the software control of the microprocessor module.

[0022] The working principle of this embodiment is as follows: During installation and use, the fixed base 3 and the connecting frame 4 are connected and locked by the locking bolt 401. At the same time, the locking bolt 401 pushes the adjusting block 303 to slide forward along the through groove 302. The adjusting block 303 and the support block 403 cooperate with the limiting slide rod 4021 and the limiting sleeve 4031, and the elasticity of the compression spring 4022 makes the connection between the fixed base 3 and the connecting frame 4 more stable. The processing system of this device is integrated into a single pluggable module, which supports hot replacement and automatically synchronizes the motor parameters after replacement. Moreover, when the protection logic execution module detects a serious fault, it prioritizes direct triggering of disconnection through hardware circuitry, independent of the software control of the microprocessor module.

[0023] The embodiments of this utility model are given for illustrative and descriptive purposes only, and are not intended to be exhaustive or to limit the utility model to the forms disclosed. Many modifications and variations will be apparent to those skilled in the art. The embodiments were chosen and described in order to better illustrate the principles and practical applications of this utility model, and to enable those skilled in the art to understand this utility model and design various embodiments with various modifications suitable for a particular purpose.

Claims

1. An industrial motor overload protection device with fault self-diagnosis, characterized in that, include: The overload protector body (1) and the controller body (2) are provided below the overload protector body (1); a fixed base (3) is provided at the rear bottom of the overload protector body (1); a connecting frame (4) is provided on the top of the controller body (2), and the connecting frame (4) is corresponding to the fixed base (3); The internal processing system of the overload protector body (1) and controller body (2) includes: a signal acquisition module, a signal conditioning module, a microprocessor module, a protection execution module, a human-machine interaction module, and a communication module. The signal acquisition module is used to acquire the operating parameters of the motor in real time, including three-phase current, voltage, and temperature signals. The signal conditioning module is connected to the signal acquisition module and is used to filter, amplify, and convert the acquired analog signals to digital. The microprocessor module is connected to the signal conditioning module and is used to determine whether an overload has been triggered and to run a fault self-diagnosis program. The communication module is used to transmit real-time data and fault information to the external control system.

2. The industrial motor overload protection device with fault self-diagnosis according to claim 1, characterized in that, The overload protector body (1) has a mounting base (101) at the rear, and a fixed base (3) is set at the bottom of the mounting base (101). The mounting base (101) is connected to the industrial motor. The overload protector body (1) has a connection slot (102) at the bottom. The overload protector body (1) has two limiting slots (103) at the bottom, and the two limiting slots (103) are distributed symmetrically on the left and right.

3. The industrial motor overload protection device with fault self-diagnosis according to claim 1, characterized in that, The controller body (2) has a display screen (201) at the front, an LED indicator (202) and a control button (203) below the display screen (201), a protective cover (204) on the top of the controller body (2), a connecting bracket (205) on the top of the controller body (2), and the connecting bracket (205) is connected to the connecting slot (102) in a coupled plug-in manner. The controller body (2) has two docking plugs (206) on the top, and the docking plugs (206) are engaged with the limiting slot (103).

4. An industrial motor overload protection device with fault self-diagnosis according to claim 1, characterized in that, The fixed base (3) has an installation groove (301) at the bottom, and through grooves (302) on the left and right side walls of the installation groove (301). An adjustment block (303) is provided in the installation groove (301), and the bottom edge of the adjustment block (303) has two chamfers. Limiting sliders (304) are provided on the left and right sides of the adjustment block (303), and the adjustment block (303) is slidably connected to the through groove (302) through the limiting sliders (304).

5. An industrial motor overload protection device with fault self-diagnosis according to claim 1, characterized in that, The vertical plate of the connecting frame (4) is provided with locking bolts (401), and the locking bolts (401) are connected to the rear wall of the mounting groove (301). The front end of the locking bolts (401) is in contact with the adjusting block (303). The horizontal plate of the connecting frame (4) is provided with two mounting columns (402), and the two mounting columns (402) are distributed symmetrically. A support block (403) is provided above the mounting columns (402). The top of the mounting post (402) is provided with a limiting slide rod (4021), and a compression spring (4022) is fitted on the limiting slide rod (4021). The support block (403) has a limiting sleeve (4031) at the bottom, and a fixing ring (4032) at the bottom end of the limiting sleeve (4031). The mounting post (402) is slidably inserted into the limiting sleeve (4031), and the compression spring (4022) is supported between the fixing ring (4032) and the mounting post (402). The top edge of the support block (403) has a chamfer, and the chamfer of the support block (403) matches the chamfer of the adjusting block (303).

6. An industrial motor overload protection device with fault self-diagnosis according to claim 1, characterized in that, The fault self-diagnosis program of the protection execution module includes: dynamically calculating the heat accumulation value based on the ratio of real-time current to rated current, and triggering a graded alarm or disconnection operation when the heat accumulation value reaches a threshold.

7. An industrial motor overload protection device with fault self-diagnosis according to claim 1, characterized in that, The human-machine interaction module includes: a display screen (201) for displaying current, voltage, fault codes and historical records; LED indicator (202) is used to indicate power, operation, and fault status; The control button (203) is used for parameter setting and manual reset.

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