Overload protection checking table for high-breaking miniature circuit breaker

Abstract

The utility model relates to a high breaking miniature circuit breaker overload protection verification bench, comprising a pedestal, the top surface of the pedestal is fixedly connected with a verification bench main body, the left side and the right side of the inner wall of the verification bench main body close to the bottom are fixedly connected with an electric slide rail, the electric slide rail is slidably connected with an electric slide block, and the electric slide block is fixedly connected with the verification bench main body. The top surface of the electric sliding block is in bolted connection with a robot arm, a mounting plate is fixedly connected to the position, close to the rear side, of the bottom surface of the inner wall of the checking table body, and through mutual cooperation of all the components, the air conditioner body can suck in external air through the air inlet pipe and heat or cool the sucked-in air; the temperature of the air is changed to a specified constant temperature, and the constant-temperature air is discharged into the calibration table main body through the exhaust pipe, so that the interior of the calibration table main body is kept at the optimal calibration temperature, the circuit breaker can be calibrated at a constant temperature, the long-delay consistency of the circuit breaker in the production calibration process is improved, and the product qualification rate is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of circuit breaker overload protection testing equipment, in particular to a high-breaking small circuit breaker overload protection testing platform. Background Art

[0002] Miniature circuit breakers are important electrical components in industrial and civil low-voltage power distribution equipment. They are mostly used at the end of low-voltage power distribution systems to protect distribution lines from overload and short-circuit faults. High-break miniature circuit breakers use the thermal expansion principle of bimetallic strips to achieve overload protection. The working principle of bimetallic strips is that when the bimetallic strips are affected by temperature changes, they expand to different degrees due to the different thermal expansion coefficients of the two metals. This expansion difference causes the bimetallic strip to bend and deform in the length direction. When the temperature rises, the thermal expansion coefficient of the covering metal is greater than that of the base metal, causing the bimetallic strip to stretch in the length direction and bend and deform in the middle part. When the bending deformation reaches a certain degree, it can trigger a switch action or other mechanical response. On the contrary, when the temperature drops, the bimetallic strip will return to its original state.

[0003] When the current passing through the circuit breaker is greater than the rated current of the circuit breaker, the temperature rises, the bimetallic strip bends in a specific direction and pushes the circuit breaker tripping device, causing the circuit breaker to open and protect the circuit. On the contrary, when the current passing through the circuit breaker is less than or equal to the rated current of the circuit breaker, the temperature drops, the bimetallic strip will return to its original state, and the circuit breaker will close normally to connect the circuit.

[0004] Due to the thermal expansion principle of the bimetallic strip, the circuit breaker is affected by changes in the seasons or ambient temperature during the production process, resulting in poor consistency of the long delay in the production verification process of the circuit breaker and low pass rate. Utility Model Content

[0005] The purpose of the utility model is to provide a high-breaking small circuit breaker overload protection test bench to solve the problems mentioned in the above background technology.

[0006] The technical solution of the utility model is a high-breaking small circuit breaker overload protection test bench, comprising a base, the top surface of the base is fixedly connected to a test bench body, the left and right sides of the inner wall of the test bench body near the bottom are commonly fixedly connected with electric slide rails, an electric slider is slidably connected to the electric slide rail, a robot arm is bolted to the top surface of the electric slider, a mounting plate is fixedly connected to the bottom surface of the inner wall of the test bench body near the rear side, the mounting plate is arranged on the rear side of the robot arm, a plurality of product workstations are installed on the front side of the mounting plate, and a constant temperature air conditioner is fixedly connected to the top surface of the test bench body.

[0007] In one embodiment, the constant temperature air conditioner includes an air conditioner main body, which is fixedly connected to the top surface of the calibration bench main body, and the air outlet end of the air conditioner main body is fixedly connected to an exhaust pipe, the air outlet end of the exhaust pipe is fixedly sleeved on the top of the calibration bench main body and passes through the inner side of the calibration bench main body, and the air inlet end of the air conditioner main body is fixedly connected to an air inlet pipe.

[0008] In one embodiment, a temperature detector is fixedly mounted on the left side of the surface of the verification table main body in the middle, and the detection probe of the temperature detector extends to the inner side of the verification table main body. A digital display is fixedly connected to the right side of the surface of the verification table main body near the top, and the temperature detector and the digital display are electrically connected.

[0009] In one embodiment, a temperature controller is fixedly connected to the right side of the calibration table body near the bottom, and the temperature controller is electrically connected to the air conditioner body and the temperature detector.

[0010] In one embodiment, a PLC controller is fixedly connected to the left side of the bottom surface of the inner wall of the verification table body, and the PLC controller is close to the front side of the verification table body. The PLC controller is electrically connected to the electric slide rail, electric slider, robot arm and electrical mechanisms on the product workstation.

[0011] In one embodiment, the main body of the verification table is a front-opening structure, and the left and right sides of the front of the main body of the verification table are hingedly connected with sealed doors. The main body of the verification table and the sealed door are both assembled from an aluminum alloy frame and a visible glass plate.

[0012] The beneficial effects provided by the utility model are:

[0013] Through the cooperation between the various components of this device, the air conditioner body can draw external air through the air inlet pipe, heat or cool the drawn air, make the temperature of the air become a specified constant temperature, and discharge the constant temperature air into the main body of the calibration table through the exhaust pipe, so that the inside of the calibration table body is maintained at the optimal calibration temperature, so that the circuit breaker can be calibrated at a constant temperature, the long delay consistency of the circuit breaker in the production calibration process is improved, and the qualified rate of the product is improved. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 It is the front view of the utility model;

[0015] Figure 2 It is the main cross-sectional view of the utility model;

[0016] Figure 3 This is a top view of the main body of the calibration bench.

[0017] In the attached drawings, 1. base; 2. calibration table body; 3. electric slide rail; 4. electric slider; 5. robot arm; 6. mounting plate; 7. product station; 8. constant temperature air conditioner; 81. air conditioner body; 82. exhaust pipe; 83. air intake pipe; 9. temperature detector; 10. digital display; 11. temperature controller; 12. PLC controller; 13. sealing door. DETAILED DESCRIPTION

[0018] It should be noted that, in the absence of conflict, the embodiments and features in the embodiments of the present invention can be combined with each other. The technical solution of the present invention will be further described below in conjunction with the drawings of the embodiments of the present invention, and the present invention is not limited to the following specific implementation methods.

[0019] It should be understood that the same or similar numbers in the drawings of the embodiments correspond to the same or similar parts. In the description of the present utility model, it should be understood that if there are terms such as "upper", "lower", "front", "back", "left", "right", "top", "bottom" and the like indicating the orientation or positional relationship, they are based on the orientation or positional relationship shown in the drawings, which is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, the terms describing the positional relationship in the drawings are only used for illustrative purposes and cannot be understood as a limitation on this patent. For ordinary technicians in this field, the specific meanings of the above terms can be understood according to specific circumstances.

[0020] In one embodiment, Figure 1-3 As shown, a high-breakage small circuit breaker overload protection test bench includes a base 1, the top surface of the base 1 is fixedly connected to a test bench body 2, the left and right sides of the inner wall of the test bench body 2 near the bottom are commonly fixedly connected with an electric slide rail 3, an electric slider 4 is slidably connected to the electric slide rail 3, a robot arm 5 is bolted to the top surface of the electric slider 4, a mounting plate 6 is fixedly connected to the bottom surface of the inner wall of the test bench body 2 near the rear side, the mounting plate 6 is arranged on the rear side of the robot arm 5, a plurality of product workstations 7 are installed on the front of the mounting plate 6, and a constant temperature air conditioner 8 is fixedly connected to the top surface of the test bench body 2.

[0021] In order to do so, the constant temperature air conditioner 8 includes an air conditioner main body 81, which is fixedly connected to the top surface of the calibration table main body 2, and the air outlet end of the air conditioner main body 81 is fixedly connected to an exhaust pipe 82, and the air outlet end of the exhaust pipe 82 is fixedly sleeved on the top of the calibration table main body 2 and passes through the inner side of the calibration table main body 2, and the air inlet end of the air conditioner main body 81 is fixedly connected to an air inlet pipe 83.

[0022] In order to detect the temperature control inside the calibration bench body 2 and display the temperature digitally, so as to facilitate the operator to observe the temperature value, a temperature detector 9 is fixedly sleeved at the middle of the left side of the surface of the calibration bench body 2, and the detection probe of the temperature detector 9 penetrates the inner side of the calibration bench body 2. A digital display 10 is fixedly connected to the right side of the surface of the calibration bench body 2 near the top. The temperature detector 9 and the digital display 10 are electrically connected. The temperature detector 9 detects the temperature inside the calibration bench body 2 and transmits the detected information to the digital display 10, and the temperature value is displayed through the display screen on the digital display 10.

[0023] In order to facilitate the control of the operation of the air-conditioning main body 81 and the temperature detector 9, the air-conditioning main body 81 is controlled to draw in external air and heat or cool the external air to convert the air into a constant temperature and discharge it into the interior of the calibration bench main body 2. A temperature controller 11 is fixedly connected to the right side of the calibration bench main body 2 near the bottom, and the temperature controller 11 is electrically connected to the air-conditioning main body 81 and the temperature detector 9.

[0024] In order to facilitate the control of the operation of the electric slide rail 3, the electric slider 4, the robot arm 5 and the product station 7, a PLC controller 12 is fixedly connected to the left side of the bottom surface of the inner wall of the verification table body 2. The PLC controller 12 is close to the front side of the verification table body 2. The PLC controller 12 is electrically connected to the electric slide rail 3, the electric slider 4, the robot arm 5 and the electrical mechanisms on the product station 7.

[0025] In order to make the interior of the verification bench main body 2 a relatively sealed space and to enable the internal situation to be viewed from the outside of the verification bench main body 2, the verification bench main body 2 is a front-opening structure, and the left and right sides of the front of the verification bench main body 2 are hingedly connected with a sealed door 13. The verification bench main body 2 and the sealed door 13 are both assembled from an aluminum alloy frame and a visible glass plate. The visible glass plate allows the internal situation of the verification bench main body 2 to be viewed from the outside of the device when the sealed door 13 is closed.

[0026] Working principle: When the utility model is used, when testing the circuit breaker, the sealed door 13 is first opened. At this time, the temperature inside the test bench body 2 is detected by the temperature detector 9, and the temperature of the air outside the device can be determined. Then the temperature detector 9 transmits the detected temperature to the digital display 10, and the temperature value is displayed on the display screen of the digital display 10. At the same time, the temperature detector 9 transmits the detected temperature value to the temperature controller 11, and then the sealed door 13 is closed. Then, the air conditioner body 81 is started through the temperature controller 11, and the air conditioner body 81 inhales the external air through the air intake pipe 83. At the same time, the temperature controller 11 controls the air conditioner body 81 through the temperature information transmitted by the temperature detector 9. , so that the air conditioner main body 81 chooses to heat or cool the drawn air, so that the air becomes a specified constant temperature, and discharges the constant temperature air into the interior of the calibration table main body 2 through the exhaust pipe 82, so that the interior of the calibration table main body 2 is maintained at the optimal calibration temperature. When the internal temperature of the calibration table main body 2 reaches the optimal calibration temperature, the PLC controller 12 controls the robot 5 to start, and the robot 5 picks up the circuit breaker, and cooperates with the PLC controller 12 to drive the electric slide 3 and the electric slide block 4 to move left and right, so that the robot 5 installs multiple circuit breakers in turn on different calibration devices on the product space 7, and then the PLC controller 12 controls the calibration device at the product station to power the circuit breaker, thereby performing overload protection detection on the circuit breaker.

[0027] The technical features of the above embodiments may be combined arbitrarily. To make the description concise, not all possible combinations of the technical features in the above embodiments are described. However, as long as there is no contradiction in the combination of these technical features, they should be considered to be within the scope of this specification.

[0028] The above embodiments only express several implementation methods of the utility model, and the descriptions are relatively specific and detailed, but they cannot be understood as limiting the scope of the utility model patent. It should be pointed out that for ordinary technicians in this field, several modifications and improvements can be made without departing from the concept of the utility model, which all belong to the protection scope of the utility model. Therefore, the protection scope of the utility model patent shall be based on the attached claims.

Claims

1. High-breakage miniature circuit breaker overload protection test bench, characterized by: It includes a base, the top surface of the base is fixedly connected to a verification table body, the left and right sides of the inner wall of the verification table body near the bottom are commonly fixedly connected with electric slide rails, an electric slider is slidably connected to the electric slide rails, a robot arm is bolted to the top surface of the electric slider, a mounting plate is fixedly connected to the bottom surface of the inner wall of the verification table body near the rear side, the mounting plate is arranged on the rear side of the robot arm, a number of product workstations are installed on the front side of the mounting plate, and a constant temperature air conditioner is fixedly connected to the top surface of the verification table body.

2. The high-breakage miniature circuit breaker overload protection test bench according to claim 1 is characterized in that: The constant temperature air conditioner includes an air conditioner main body, which is fixedly connected to the top surface of the calibration table main body. The air outlet end of the air conditioner main body is fixedly connected to an exhaust pipe, the air outlet end of the exhaust pipe is fixedly sleeved on the top of the calibration table main body and penetrates to the inner side of the calibration table main body, and the air inlet end of the air conditioner main body is fixedly connected to an air inlet pipe.

3. The high-breakage miniature circuit breaker overload protection test bench according to claim 1, characterized in that: A temperature detector is fixedly sleeved on the left side of the surface of the verification table main body in the middle, and the detection probe of the temperature detector penetrates the inner side of the verification table main body. A digital display is fixedly connected on the right side of the surface of the verification table main body near the top, and the temperature detector and the digital display are electrically connected.

4. The high-breakage miniature circuit breaker overload protection test bench according to claim 1, characterized in that: A temperature controller is fixedly connected to the right side of the calibration table body near the bottom, and the temperature controller is electrically connected to the air conditioner body and the temperature detector.

5. The high-breakage miniature circuit breaker overload protection test bench according to claim 1, characterized in that: A PLC controller is fixedly connected to the left side of the bottom surface of the inner wall of the verification table body. The PLC controller is close to the front side of the verification table body. The PLC controller is electrically connected to the electric slide rail, electric slider, robot arm and electrical mechanisms on the product station.

6. The high-breakage miniature circuit breaker overload protection test bench according to claim 1, characterized in that: The main body of the test bench is a front opening structure, and the left and right sides of the front of the main body of the test bench are hingedly connected with sealed doors. The main body of the test bench and the sealed door are both assembled from an aluminum alloy frame and a visible glass plate.

Images