Automatic testing device of power distribution terminal

Abstract

The invention relates to the technical field of automatic detection, and discloses an automatic test device for a power distribution terminal, which comprises a tester main body, a detection module is arranged in the tester main body, the detection module is connected with an external measurement interface, and the detection module is electrically connected with a measurement circuit. A circuit module is fixedly installed in the tester body, and a standby circuit is installed in the circuit module. Current is monitored in real time through the detection assembly, once a preset threshold value is exceeded, the adjusting assembly is started immediately, the resistance of the measuring circuit is increased, the current flowing into the detection module is reduced, meanwhile, the measuring circuit is connected with the circuit module in parallel, overload current is shunted through the standby circuit, the burden of the measuring circuit is relieved, and the measuring circuit is protected against damage; according to the design, a traditional fuse is abandoned, an automatic adjusting mechanism is adopted, parts do not need to be replaced, the maintenance workload and downtime are reduced, and the detection continuity and efficiency are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of automated testing, and particularly to an automated testing device for a distribution terminal. Background Art

[0002] Distribution terminals mainly include feeder terminal units (FTUs), data terminal units (DTUs), and distribution transformer monitoring terminals (TTUs), etc. They are respectively installed on feeder switches, substations or switchgear, and distribution transformers of distribution lines, and are used to monitor parameters such as current, voltage, and power in real time, and to achieve functions such as fault detection, isolation, and equipment status monitoring. They are key devices to ensure the safe and stable operation of the distribution network.

[0003] These devices are directly related to the power supply reliability and power quality of the distribution network. Through detection, potential fault hazards of the devices can be discovered in time to ensure their stable operation under various complex working conditions, and at the same time meet the standard requirements of relevant departments such as the State Grid for the performance and functions of the devices, thereby improving the operation and maintenance efficiency, reducing the failure rate, and ensuring the safe and efficient operation of the distribution network.

[0004] However, when testing distribution terminals, equipment failures may cause the testing device to be overloaded, resulting in damage. Existing devices usually protect by fusing a fuse, but this method has obvious deficiencies. After the fuse melts, it needs to be replaced, which not only increases the maintenance cost, but also may cause the detection to be interrupted and reduce the detection efficiency. In addition, the fusing characteristics of the fuse are greatly affected by factors such as temperature and current fluctuations, and it is difficult to accurately control the timing of the protection action, and it may not be able to protect the equipment from instantaneous overload damage in time. Summary of the Invention

[0005] The purpose of the present invention is to provide an automated testing device for a distribution terminal to solve at least one technical problem existing in the above-mentioned prior art.

[0006] To achieve the above purpose, the present invention provides the following technical solution: An automated testing device for a distribution terminal, including a tester main body. The tester main body internally includes a detection module, the detection module is connected to an external measurement interface, and the detection module is electrically connected to a measurement circuit. A circuit module is also fixedly installed inside the tester main body, and a standby circuit is installed inside the circuit module;

[0007] It further includes an adjustment component, which can increase the resistance in the measurement circuit and connect the detection module in parallel with the circuit module.

[0008] It further includes a detection component, which can detect the input current and trigger the adjustment component when the input current exceeds a preset threshold.

[0009] Preferably, the adjustment component includes a first limiting frame and a second limiting frame fixedly installed inside the tester body. A slidable first slider is installed on the inner wall of the first limiting frame, and a slidable connecting slider is installed on the inner wall of the second limiting frame. The connecting slider is electrically connected to the detection module, and a connecting plug capable of connecting to the circuit module is fixedly installed on the outer wall of the connecting slider. When the connecting plug is connected to the circuit module, the detection module and the circuit module form a parallel circuit;

[0010] It also includes an adjustment part. When the first slider slides, it can increase the resistance in the measurement circuit.

[0011] Preferably, the adjustment part includes a sliding rheostat fixedly installed inside the tester body. The sliding rheostat is connected in series with the internal measurement circuit of the detection module. The sliding rheostat includes a sliding piece capable of adjusting its resistance. A conductive slider is ball-jointed to the outer wall of the sliding piece, and the other end of the conductive slider is ball-jointed to the outer wall of the first slider.

[0012] Preferably, the detection component includes a limiting chute fixedly installed on the outer wall of the detection module. A conductive coil connected in series with the measurement circuit is embedded in the inner wall of the limiting chute. A sliding block is slidably installed on the inner wall of the limiting chute. The sliding block is made of magnetic metal. When the current input into the detection module changes beyond a preset value, it will drive the sliding block to slide;

[0013] It also includes a driving component. The driving component can drive the connecting slider and the first slider to slide when the sliding block slides.

[0014] Preferably, the driving component includes a V-shaped rotating rod installed inside the tester body and capable of rotating. A torsion spring is connected between the V-shaped rotating rod and the tester body. Through slots are opened on both arms of the V-shaped rotating rod. A first cylindrical slider is fixedly installed on the top of the first slider. The first cylindrical slider can slide and rotate in one of the through slots of the V-shaped rotating rod. A second cylindrical slider is installed on the top of the connecting slider. The second cylindrical slider can slide and rotate in the other through slot of the V-shaped rotating rod.

[0015] Preferably, a slot is opened at the rotating shaft of the V-shaped rotating rod, and a limiting rod is slidably installed in the slot of the V-shaped rotating rod. The limiting rod is connected to the inner wall of the slot of the V-shaped rotating rod through a first spring. When the V-shaped rotating rod is in the initial position, the outer wall of the limiting rod is in contact with and locked to the outer wall of the sliding block.

[0016] Preferably, a limit slider is fixedly installed inside the tester main body. A conductive slider is slidably installed on the inner wall of the limit slider. A tension spring is installed between the limit slider and the conductive slider. The limit slider and the conductive slider are electrically connected through a contact piece. The sliding rheostat is connected in series with the detection module through the limit slider. When the first slider slides, it can contact and slide with the conductive slider.

[0017] Preferably, a second slider is slidably installed on the inner wall of the second limit frame. The second cylindrical slider is fixedly installed on the top of the second slider. The second slider is connected to the connection slider assembly through a second spring. Protrusions are fixedly installed on both inner walls of the second limit frame.

[0018] Preferably, the rotation axis of the V-shaped rotating rod penetrates and passes through the outer wall of the tester main body. A winding wheel is penetrated and rotatably installed on the outer wall of the tester main body. A rope is fixed to the outer wall of the winding wheel. The other end of the rope is fixedly connected to the sliding block.

[0019] Preferably, a fan is installed inside the tester main body. A warning light is fixedly installed on the outer wall of the tester main body. The warning light and the fan are both electrically connected to the circuit module.

[0020] Compared with the prior art, the beneficial effects of the present invention are as follows:

[0021] First, in the present invention, by connecting the power distribution terminal to be tested to the external interface of the tester main body, the current flows into the detection module and then enters the measurement circuit to start the detection. At this time, the detection component monitors the current in real time. Once it exceeds the preset threshold, the adjustment component is immediately activated to increase the resistance of the measurement circuit, reduce the current flowing into the detection module, and at the same time connect the measurement circuit in parallel with the circuit module to shunt the overload current through the standby circuit, reducing the burden on the measurement circuit and protecting it from damage. This design abandons the traditional fuse and adopts an automatic adjustment mechanism, eliminating the need to replace components, reducing the maintenance workload and downtime, improving the detection continuity and efficiency. At the same time, the standby circuit enhances the stability of the device, enabling it to adapt to different load conditions. This device is efficient, safe, and reliable, providing an ideal solution for the automated testing of power distribution terminals, with significant economic benefits and broad application prospects.

[0022] Second, when the present invention detects the terminal to be measured, the current passes through the conductive coil. When the input current changes, according to the principle of electromagnetic induction, a changing magnetic field is formed around the conductive coil. The sliding block is made of magnetic metal. When the current changes too much, the sliding block slides under the action of the magnetic field force, triggering the driving component to act, driving the connecting slider and the first slider to slide. The sliding of the first slider causes the sliding piece to slide on the sliding rheostat, increasing the resistance of the measurement circuit and reducing the current flowing into the detection module; the sliding of the connecting slider causes the connecting plug to be connected to the circuit module, forming a parallel circuit to shunt the current and reducing the burden on the detection module. This design can quickly respond when the current is abnormal, adjust the resistance and shunt the current, protecting the detection module from overload damage. Compared with the traditional fuse, this device can instantly trigger the protection mechanism when the current exceeds the threshold, avoiding the protection delay caused by factors such as the fuse melting characteristics being affected by temperature and current fluctuations. The fast response ability effectively protects the detection module and the entire test device from instantaneous overload damage. BRIEF DESCRIPTION OF THE DRAWINGS

[0023] Figure 1 is a three-dimensional structural schematic diagram of the present invention;

[0024] Figure 2 is a first internal sectional schematic diagram of the present invention;

[0025] Figure 3 is a second internal sectional schematic diagram of the present invention;

[0026] Figure 4 is an enlarged sectional schematic diagram of the adjustment component in the present invention;

[0027] Figure 5 is an enlarged schematic diagram of components such as the connecting slider in the present invention;

[0028] Figure 6 is a sectional schematic diagram of the fan in the present invention;

[0029] Figure 7 is a second state sectional schematic diagram of the present invention;

[0030] Figure 8 is an enlarged three-dimensional schematic diagram of the protrusion in the present invention;

[0031] Figure 9 is a flow block diagram of the present invention.

[0032] In the figure: 1. Tester main body; 2. Air inlet; 3. Indicator light; 4. Detection module; 5. Slide rheostat; 51. Slide; 6. First limit frame; 7. Second limit frame; 8. V-shaped rotating rod; 9. Rope; 10. Circuit module; 11. Connecting plug; 12. Limit chute; 13. Conductive coil; 14. Slide block; 15. Limit rod; 16. First spring; 17. Limit slider; 18. Conductive slider; 19. First slider; 20. Second slider; 21. Connecting slider; 22. Second spring; 23. Fan; 24. Take-up wheel; 25. Protrusion; 26. First cylindrical slider; 27. Second cylindrical slider. Detailed implementation

[0033] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0034] Please refer to Figures 1 to 8 , the present invention provides a technical solution: an automatic testing device for a power distribution terminal, including a tester main body 1. The inside of the tester main body 1 includes a detection module 4. The detection module 4 is connected to an external measurement interface and is electrically connected to a measurement circuit. A circuit module 10 is also fixedly installed inside the tester main body 1, and a standby circuit is installed inside the circuit module 10;

[0035] It also includes an adjustment component, which can increase the resistance in the measurement circuit and connect the detection module 4 in parallel with the circuit module 10.

[0036] It also includes a detection component, which can detect the input current. When the input current exceeds a preset threshold, the adjustment component is triggered.

[0037] Refer to Figure 1 and Figure 2, when using this device, first connect the power distribution terminal to be tested to the interface outside the tester main body 1, so that the current of the terminal to be tested flows into the detection module 4 and then into the measurement circuit, thereby detecting the terminal to be tested. At the same time, the detection component detects the current input into the measurement circuit. When the input current exceeds the preset threshold, the adjustment component is triggered. At this time, the adjustment component increases the resistance in the measurement circuit, effectively reducing the current flowing into the detection module 4. At the same time, the measurement circuit is connected in parallel with the circuit module 10, and part of the current is shunted through the standby circuit in the circuit module 10. The design of the standby circuit is intended to bear the overload current, thereby reducing the burden on the measurement circuit and protecting the measurement circuit from overload damage. Traditional fuses need to be replaced after melting, which not only increases the maintenance cost but also may cause the detection to be interrupted. The automatic adjustment mechanism adopted by this device does not require any component replacement, reducing the maintenance workload and downtime, and improving the continuity and efficiency of detection. Through this design, this device can quickly respond when detecting an overload current, ensuring the safety and reliability of the test process. This automatic adjustment and protection mechanism not only improves the test efficiency but also extends the service life of the equipment and reduces the maintenance cost. At the same time, the design of the standby circuit further enhances the stability and adaptability of the device, enabling it to operate stably under different load conditions. In short, with its efficient, safe and reliable performance, this device provides an ideal solution for the automatic testing of power distribution terminals, with broad application prospects and significant economic benefits.

[0038] Further, the adjustment component includes a first limit frame 6 and a second limit frame 7 fixedly installed inside the tester main body 1. A slidable first slider 19 is installed on the inner wall of the first limit frame 6, and a slidable connection slider 21 is installed on the inner wall of the second limit frame 7. The connection slider 21 is electrically connected to the detection module 4, and a connection plug 11 capable of connecting to the circuit module 10 is fixedly installed on the outer wall of the connection slider 21. When the connection plug 11 is connected to the circuit module 10, the detection module 4 and the circuit module 10 form a parallel circuit;

[0039] It also includes an adjustment part that can increase the resistance in the measurement circuit when the first slider 19 slides.

[0040] See Figure 2, when the detection component detects that the input current exceeds the preset threshold, the first slider 19 is made to slide within the first limit frame 6 through an external drive structure, and the resistance in the measurement circuit is increased through an adjustment part. It can rapidly increase the resistance in the measurement circuit during current overload, effectively protecting the detection module 4 from damage caused by overload current, improving the reliability and service life of the device. Secondly, the external drive structure also causes the connection slider 21 to slide within the second limit frame 7, connecting the connection plug 11 outside the connection slider 21 to the circuit module 10, so that the detection module 4 and the circuit module 10 form a parallel circuit, and part of the current is shunted to the standby circuit in the circuit module 10, thereby reducing the burden on the detection module 4 and avoiding device damage caused by excessive current, ensuring the safety of the test process.

[0041] Furthermore, the adjustment part includes a rheostat 5 fixedly installed inside the tester main body 1. The rheostat 5 is connected in series with the measurement circuit inside the detection module 4. The rheostat 5 includes a sliding piece 51 capable of adjusting its resistance. The outer wall of the sliding piece 51 is spherical-jointed with a conductive slider 18, and the other end of the conductive slider 18 is spherical-jointed with the outer wall of the first slider 19.

[0042] See Figure 2 , in the initial state, the sliding piece 51 of the rheostat 5 is in the initial position, and the resistance of the measurement circuit remains at the initial design value. As known from the above, when the detection component detects that the current input into the measurement circuit exceeds the preset value, the external drive structure will drive the first slider 19 to slide within the first limit frame 6. Since the first slider 19 and the conductive slider 18 are spherical-jointed, the first slider 19 will drive the conductive slider 18 to move, thereby driving the sliding piece 51 to slide through the conductive slider 18, further changing the resistance value of the rheostat 5, thereby increasing the resistance in the measurement circuit, and effectively reducing the current flowing into the detection module 4. This not only improves the safety of the device under overload conditions but also enhances the stability and reliability of the measurement circuit. In addition, this automatic adjustment mechanism reduces the need for manual intervention, improves the test efficiency, and reduces the maintenance cost.

[0043] Furthermore, the detection component includes a limit sliding groove 12 fixedly installed on the outer wall of the detection module 4. A conductive coil 13 connected in series with the measurement circuit is embedded in the inner wall of the limit sliding groove 12. A sliding block 14 is slidably installed on the inner wall of the limit sliding groove 12. The sliding block 14 is made of magnetic metal. When the change in the current input into the detection module 4 exceeds the preset value, it will drive the sliding block 14 to slide;

[0044] It also includes a drive component that can drive the connection slider 21 and the first slider 19 to slide when the sliding block 14 slides.

[0045] See Figure 3, a conductive coil 13 connected in series with the measurement circuit is embedded in the inner wall of the limit chute 12. When detecting the terminal under test, current will pass through the conductive coil 13. When the input current changes, according to the principle of electromagnetic induction, a changing magnetic field will be formed around the conductive coil 13. The sliding block 14 is made of magnetic metal. When the input current changes too much, it will be affected by the magnetic field force and slide. The sliding of the sliding block 14 will trigger the driving component to act, thereby driving the connecting slider 21 and the first slider 19 to slide. When the first slider 19 slides, it will drive the sliding piece 51 to slide on the sliding rheostat 5, thereby increasing the resistance in the measurement circuit and effectively reducing the current flowing into the detection module 4. At the same time, when the connecting slider 21 slides, it will connect the connecting plug 11 to the circuit module 10, so that the detection module 4 and the circuit module 10 form a parallel circuit, further shunting the current and reducing the burden on the detection module 4. This design enables the device to quickly respond when detecting abnormal current. By adjusting the resistance of the measurement circuit and achieving current shunting, it effectively protects the detection module 4 from damage caused by overloaded current.

[0046] Compared with the traditional fuse, this device can instantly trigger the protection mechanism when the current exceeds the preset threshold, avoiding the protection delay caused by the influence of factors such as temperature and current fluctuation on the fuse melting characteristics. This fast response ability effectively protects the detection module 4 and the entire test device from damage caused by instantaneous overload.

[0047] Furthermore, the driving component includes a V-shaped rotating rod 8 installed inside the tester main body 1 and capable of rotating, and a torsion spring is connected between the V-shaped rotating rod 8 and the tester main body 1. Through slots are opened on both arms of the V-shaped rotating rod 8. A first cylindrical slider 26 is fixedly installed on the top of the first slider 19, and the first cylindrical slider 26 can slide and rotate in one of the through slots of the V-shaped rotating rod 8. A second cylindrical slider 27 is installed on the top of the connecting slider 21, and the second cylindrical slider 27 can slide and rotate in the other through slot of the V-shaped rotating rod 8.

[0048] See Figure 2 and Figure 3, in the initial state, the V-shaped rotating rod 8 is in the initial position. At this time, the sliding rheostat 5 is in the state of minimum resistance, and the detection module 4 and the circuit module 10 are not connected. When the current flowing into the detection module 4 changes too much, the slider 14 will move towards the direction close to the detection module 4. At this time, the V-shaped rotating rod 8 rotates. The straight grooves on the two arms of the V-shaped rotating rod 8 will drive the first cylindrical slider 26 and the second cylindrical slider 27 to slide respectively. The sliding of the first cylindrical slider 26 will drive the first slider 19 to slide in the first limiting frame 6, thereby driving the sliding piece 51 to slide on the sliding rheostat 5, and further completing the increase of the resistance of the detection module 4. At the same time, the sliding of the second cylindrical slider 27 will drive the connecting slider 21 to slide in the second limiting frame 7, so that the connecting plug 11 is connected to the circuit module 10, thereby forming a parallel circuit between the detection module 4 and the circuit module 10. This not only completes the change of the resistance in the detection module 4, but also further shunts the current entering the detection module 4, and can protect the detection module 4 in case of special circumstances.

[0049] Further, a notch is provided at the rotation axis of the V-shaped rotating rod 8, and a limiting rod 15 is slidably installed in the notch of the V-shaped rotating rod 8. The limiting rod 15 is connected to the inner wall of the notch of the V-shaped rotating rod 8 through a first spring 16. When the V-shaped rotating rod 8 is in the initial position, the outer wall of the limiting rod 15 is in contact with and locked to the outer wall of the slider 14.

[0050] In the initial state, the outer walls of the slider 14 and the limiting rod 15 are in contact with each other, so as to complete the locking of the V-shaped rotating rod 8. When the current flowing into the detection module 4 changes too much, the slider 14 will move towards the direction close to the detection module 4. When the slider 14 moves, it will disengage from the limiting rod 15, thereby completing the unlocking process of the V-shaped rotating rod 8. Under the action of the torsion spring, the V-shaped rotating rod 8 will rotate, and then drive the first slider 19 and the connecting slider 21 to slide, thereby increasing the resistance of the detection module 4 and forming a parallel circuit between the detection module 4 and the circuit module 10.

[0051] Among them, it is worth mentioning that when the current change flowing into the detection module 4 is small and is not enough to make the slider 14 disengage from the limiting rod 15, the device will remain locked, the V-shaped rotating rod 8 will not rotate, the resistance of the measuring circuit will remain at the initial design value, and the detection module 4 will continue to work normally. This design ensures that the device remains stable within the normal working current range and will not be mis-triggered by slight current fluctuations, thereby improving the accuracy and reliability of the test.

[0052] Furthermore, a limit slider 17 is fixedly installed inside the tester main body 1. A conductive slider 18 is slidably installed on the inner wall of the limit slider 17. A tension spring is installed between the limit slider 17 and the conductive slider 18, and the limit slider 17 and the conductive slider 18 are electrically connected through a contact piece. The sliding rheostat 5 is connected in series with the detection module 4 through the limit slider 17. When the first slider 19 slides, it can contact and slide with the conductive slider 18.

[0053] As can be seen from the above, when the current flowing into the measurement circuit changes too much, it will cause the sliding block 14 to disengage from the limit rod 15, thus unlocking the V-shaped rotating rod 8, further increasing the resistance of the detection module 4, and forming a parallel circuit between the detection module 4 and the circuit module 10, thereby reducing the current flowing into the measurement circuit. However, although the current is shunted, the voltage still exists. To further design a protection mechanism, when the V-shaped rotating rod 8 rotates, it will drive the first slider 19 to slide. The sliding of the first slider 19 will first cause the sliding piece 51 to slide, reducing the current flowing into the detection module 4. Then, after the first slider 19 slides a certain distance, it will disengage from the conductive slider 18 and drive the conductive slider 18 to slide, causing the conductive slider 18 to disengage from the contact piece on the limit slider 17, thereby cutting off the connection between the measurement circuit and the external power supply, ensuring that the measurement circuit is fully protected under overload and overvoltage conditions. This design enables the device to provide comprehensive protection through a multi-level protection mechanism in the face of overload current and overvoltage conditions. First, current shunting is achieved by increasing the resistance and forming a parallel circuit, and by cutting off the connection between the measurement circuit and the external power supply, it is ensured that the measurement circuit can also be protected in extreme cases. This multi-level protection mechanism not only improves the reliability and service life of the device but also enhances the safety and stability of the test process.

[0054] It is worth mentioning that by first increasing the resistance to reduce the current, the energy transmission in the circuit can be gradually reduced, and phenomena such as electric arcs and voltage transients generated by suddenly cutting off the connection can be reduced. This helps to protect the sensitive components in the circuit and avoid damage caused by sudden changes in current and voltage.

[0055] Furthermore, a second slider 20 is slidably installed on the inner wall of the second limit frame 7. A second cylindrical slider 27 is fixedly installed on the top of the second slider 20. The second slider 20 is connected to the connecting slider 21 assembly through a second spring 22. Protrusions 25 are fixedly installed on both inner walls of the second limit frame 7.

[0056] See Figure 5 and Figure 8, on the basis of the above, a further embodiment is proposed. When the V-shaped rotating rod 8 rotates, it will first drive the second slider 20 to slide through the second cylindrical slider 27. Due to the action of the protrusion 25 on the connecting slider 21, the sliding of the second slider 20 will first compress the second spring 22. When the elastic potential energy in the second spring 22 accumulates to a level that enables the connecting slider 21 to overcome the protrusion 25, it will instantly break through the limitation of the protrusion 25, enabling the connecting slider 21 to move towards the interface of the circuit module 10 with a greater initial velocity. This fast and stable connection process ensures the parallel connection of the measurement circuit and the standby circuit, further shunting the current and reducing the burden on the detection module 4. At the same time, this design also provides sufficient power for the movement of the connecting slider 21 through the release of the elastic potential energy of the second spring 22, ensuring the reliability of the connection and avoiding insufficient current shunting caused by poor contact.

[0057] Furthermore, the rotation axis of the V-shaped rotating rod 8 penetrates and extends out of the outer wall of the tester main body 1. A winding wheel 24 is rotatably installed through the outer wall of the tester main body 1. A rope 9 is fixed to the outer wall of the winding wheel 24, and the other end of the rope 9 is fixedly connected to the sliding block 14.

[0058] As can be seen from the above, when a special situation occurs, the sliding block 14 disengages from the limiting rod 15, causing the rotation of the V-shaped rotating rod 8, thereby changing the resistance of the detection module 4 and making the detection module 4 connected in parallel with the circuit module 10, thus completing the protection of the detection module 4. The axis of the V-shaped rotating rod 8 penetrates and extends out of the outer wall of the tester main body 1. After the measurement is completed, by rotating the V-shaped rotating rod 8 outside the tester main body 1, the V-shaped rotating rod 8 is reset, and by rotating the winding wheel 24, the winding wheel 24 winds the rope 9, thereby resetting the sliding block 14 that has entered the limiting chute 12 and completing the locking of the limiting rod 15, preparing for the next special situation.

[0059] Furthermore, a fan 23 is installed inside the tester main body 1, and a warning light 3 is fixedly installed on the outer wall of the tester main body 1, and both the warning light 3 and the fan 23 are electrically connected to the circuit module 10.

[0060] See Figure 1 and Figure 6 , when the V-shaped rotating rod 8 rotates, it forms a parallel circuit between the detection module 4 and the circuit module 10. At this time, the circuit module 10 will trigger the circuit module 10 to push, increasing the air circulation inside the device. In addition, an air inlet 2 is provided on the outer wall of the tester main body 1 to assist in heat dissipation, preventing the device from overheating due to excessive current. At the same time, the warning light 3 will light up, sending an alarm to the operator to indicate that the current device is in a protected state and needs to be inspected or adjusted. This design can not only effectively protect the device from overload damage but also timely remind the operator to ensure the safe operation of the device.

[0061] The standard parts used in this embodiment can be directly purchased from the market, and the non-standard structural components described in the specification and drawings can also be processed without any doubt directly according to the existing common technical knowledge. At the same time, the connection methods of each component adopt the mature conventional means in the prior art, and the machines, parts and equipment all adopt the conventional models in the prior art, so no specific description will be made here.

[0062] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principles and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. An automated test device for a distribution terminal, comprising a tester main body (1), characterized in that: The interior of the tester main body (1) includes a detection module (4). The detection module (4) is connected to an external measurement interface and is electrically connected to a measurement circuit. A circuit module (10) is fixedly installed inside the tester main body (1), and a standby circuit is installed inside the circuit module (10). It further includes an adjustment component. The adjustment component can increase the resistance in the measurement circuit and connect the detection module (4) in parallel with the circuit module (10). It further includes a detection component. The detection component can detect the input current and trigger the adjustment component when the input current exceeds a preset threshold value.

2. The automated test device for a power distribution terminal according to claim 1, wherein: The adjustment component includes a first limit frame (6) and a second limit frame (7) fixedly installed inside the tester main body (1). A slidable first slider (19) is installed on the inner wall of the first limit frame (6), and a slidable connection slider (21) is installed on the inner wall of the second limit frame (7). The connection slider (21) is electrically connected to the detection module (4), and a connection plug (11) capable of connecting to the circuit module (10) is fixedly installed on the outer wall of the connection slider (21). When the connection plug (11) is connected to the circuit module (10), the detection module (4) and the circuit module (10) form a parallel circuit. It further includes an adjustment part. When the first slider (19) slides, it can increase the resistance in the measurement circuit.

3. The automated test device for a power distribution terminal according to claim 2, wherein: The adjustment part includes a sliding rheostat (5) fixedly installed inside the tester main body (1). The sliding rheostat (5) is connected in series with the measurement circuit inside the detection module (4). The sliding rheostat (5) includes a slide piece (51) capable of adjusting its resistance. A conductive slider (18) is ball-jointed to the outer wall of the slide piece (51), and the other end of the conductive slider (18) is ball-jointed to the outer wall of the first slider (19).

4. The automated test device for a power distribution terminal according to claim 3, characterized in that: The detection component includes a limit chute (12) fixedly installed on the outer wall of the detection module (4). A conductive coil (13) connected in series with the measurement circuit is embedded in the inner wall of the limit chute (12). A sliding block (14) is slidably installed on the inner wall of the limit chute (12). The sliding block (14) is made of magnetic metal. When the change in the current input into the detection module (4) exceeds a preset value, it will drive the sliding block (14) to slide. It further includes a driving component. The driving component can drive the connection slider (21) and the first slider (19) to slide when the sliding block (14) slides.

5. The automated test device for a power distribution terminal according to claim 4, characterized in that: The driving component includes a V-shaped rotating rod (8) installed inside the tester main body (1) and capable of rotating. A torsion spring is connected between the V-shaped rotating rod (8) and the tester main body (1). Through slots are formed in both arms of the V-shaped rotating rod (8). A first cylindrical slider (26) is fixedly installed at the top of the first slider (19). The first cylindrical slider (26) can slide and rotate in one of the through slots of the V-shaped rotating rod (8). A second cylindrical slider (27) is installed at the top of the connection slider (21). The second cylindrical slider (27) can slide and rotate in the other through slot of the V-shaped rotating rod (8).

6. The automated test device for a power distribution terminal according to claim 5, characterized in that: A notch is provided at the rotation axis of the V-shaped rotating rod (8), and a limiting rod (15) is slidably installed in the notch of the V-shaped rotating rod (8). The limiting rod (15) is connected to the inner wall of the notch of the V-shaped rotating rod (8) through a first spring (16). When the V-shaped rotating rod (8) is in the initial position, the outer wall of the limiting rod (15) is in contact with and locked to the outer wall of the sliding block (14).

7. The automated test device for a power distribution terminal according to claim 6, wherein: A limiting slider (17) is fixedly installed inside the tester main body (1). A conductive slider (18) is slidably installed inside the limiting slider (17). A tension spring is installed between the limiting slider (17) and the conductive slider (18), and the limiting slider (17) and the conductive slider (18) are electrically connected through a contact piece. The sliding rheostat (5) is connected in series with the detection module (4) through the limiting slider (17). When the first slider (19) slides, it can contact and slide with the conductive slider (18).

8. The automated test device for the power distribution terminal according to claim 5, wherein: A second slider (20) is slidably installed inside the inner wall of the second limiting frame (7). The second cylindrical slider (27) is fixedly installed on the top of the second slider (20). The second slider (20) is connected to the connecting slider (21) assembly through a second spring (22). Protrusions (25) are fixedly installed on both inner walls of the second limiting frame (7).

9. The automated test device for a power distribution terminal according to claim 7, characterized in that: The rotation axis of the V-shaped rotating rod (8) penetrates and passes through the outer wall of the tester main body (1). A winding wheel (24) is rotatably installed through the outer wall of the tester main body (1). A rope (9) is fixed to the outer wall of the winding wheel (24), and the other end of the rope (9) is fixedly connected to the sliding block (14).

10. The automated test device for a power distribution terminal according to any one of claims 1-9, characterized in that: A fan (23) is installed inside the tester main body (1). A warning lamp (3) is fixedly installed on the outer wall of the tester main body (1), and both the warning lamp (3) and the fan (23) are electrically connected to the circuit module (10).

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