High polymer material resistance test electric leakage protection device

Abstract

The invention relates to the technical field of electric leakage protection devices, in particular to a high polymer material resistance test electric leakage protection device which comprises a test box, test devices are symmetrically arranged in the test box and used for being connected with two pins of a to-be-detected resistor to form an access and conduct measurement, and a bearing box is fixedly connected in the test box; through the arrangement of the first elastic telescopic rod and the special-shaped plate, after the special-shaped plate loses external limitation, the first elastic telescopic rod can release spring force to push the special-shaped plate to rapidly move towards the interior of the protection shell, and the rapid movement of the special-shaped plate facilitates the separation of a to-be-detected resistor from the testing device after a short circuit occurs in the testing process; and the resistor is prevented from continuously contacting with the testing device, so that overheating, combustion or other potential dangerous conditions caused by continuous short circuit can be prevented.

Description

Technical Field

[0001] The invention relates to the technical field of leakage protection devices, and in particular to a leakage protection device for polymer material resistance testing. Background Art

[0002] Resistor leakage protection refers to taking measures to prevent safety risks and equipment damage caused by leakage in resistors or other circuit components during resistor testing or use. Leakage refers to the flow of current to the ground or other conductive objects through unintended paths (such as insulating materials, human bodies, equipment casings, etc.). Resistor leakage protection measures are essential to ensure operator safety and protect equipment.

[0003] In actual application, if the leakage problem is not handled in time during the resistance test, it may bring serious consequences. In mild cases, leakage may cause the function of the resistor or other test equipment to be damaged; in extreme cases, leakage may cause abnormal increase in current and cause overheating of certain components, especially when the insulating material has aged or been damaged. Overheating may quickly escalate to burning of the equipment or even cause a fire. Although existing protection devices (such as leakage circuit breakers) can quickly cut off the power supply when leakage is detected to prevent electric shock and fire, once a fire occurs, these devices usually do not have subsequent fire extinguishing functions and cannot effectively deal with fires that have already occurred. Summary of the invention

[0004] The purpose of the present invention is to solve the shortcomings of the prior art and to propose a polymer material resistance test leakage protection device.

[0005] To achieve the above purpose, the technical solution adopted by the present invention is: a polymer material resistance test leakage protection device, including a test box, the test box is symmetrically provided with test devices inside, used to connect two pins of the resistor to be tested, form a path and perform measurement, the test box is fixedly connected with a receiving box inside, the receiving box is located between two groups of the test devices, the top of the receiving box is fixedly connected with a test board, and the test board is symmetrically provided with resistance limit components, used to limit the position of the resistor to be tested;

[0006] The test plate is provided with a special-shaped groove, which is composed of two rectangular grooves and a central circular groove, and the circular groove is connected with the rectangular grooves on both sides, the interior of the receiving box is fixedly connected with a first elastic telescopic rod, the telescopic end of the first elastic telescopic rod is fixedly connected with a special-shaped plate adapted to the special-shaped groove, a protective shell is provided above the special-shaped plate, and a driving assembly is provided on the top of the protective shell for pushing the protective shell to move vertically up and down;

[0007] Two ventilators and two trigger rods are fixedly connected inside the protective shell. The trigger rods are used to trigger two sets of resistance limit assemblies to move away from each other. Through holes for the ventilators to pass through are symmetrically opened on the special-shaped plate, and the opening direction of the through holes coincides with the moving direction of the ventilators.

[0008] Preferably, the resistance limit assembly includes two second elastic telescopic rods, the two second elastic telescopic rods are fixedly connected to the top of the test plate through two mounting plates, the telescopic ends of the two second elastic telescopic rods are fixedly connected with limiting blocks, the limiting blocks are slidably connected to the test plate, and the two limiting blocks are provided with inclined surfaces on one side close to each other, and the inclined surface is adapted to the trigger rod.

[0009] Preferably, a protection pad is fixedly connected to each other's sides of the two limiting blocks.

[0010] Preferably, two sets of bending components are provided on the side walls of the two limiting blocks, and the bending components include two bending columns, and the two bending columns are respectively fixedly connected to the side walls of the limiting blocks at corresponding positions, and the two bending columns are slidingly sleeved with sleeves.

[0011] Preferably, a sliding groove is provided on the outer wall of the sleeve, sliding blocks are fixedly connected to the outer walls of the two bending columns, and straightening rods are fixedly connected to the bottoms of the two sliding blocks for limiting the pins of the resistor to be detected.

[0012] Preferably, an anti-collision pad is fixedly connected to the inside of the protective shell, which is used to protect the resistor when the first elastic telescopic rod pushes the resistor to move through the special-shaped plate. A plurality of cooling powder bags that are automatically sprinkled when a specified temperature is reached are installed inside the protective shell, which are used to cool the inside of the protective shell.

[0013] Preferably, the interior of the protective shell is fixedly connected to a circular sealed box, a blower is fixedly installed on the outer wall of the circular sealed box, the air outlet of the blower is fixedly connected to the circular sealed box through an air duct, and a plurality of one-way air outlets are opened on the outer wall of the circular sealed box.

[0014] Preferably, a cavity is provided inside the special-shaped plate, a suction port is provided on the top of the special-shaped plate, a connecting hole is provided on the special-shaped plate 6, the connecting hole is connected to the through hole, a conveying pipe is fixedly connected to the outer wall of the ventilation duct, the conveying pipe is connected to the circular sealing box, a flow hole is provided on the outer wall of the ventilation duct, and after the ventilation duct moves downward to a specified position, the flow hole is connected to the connecting hole.

[0015] Preferably, the testing device comprises a testing frame, to which a testing piece is fixedly connected, and to which a testing probe is fixedly connected.

[0016] Preferably, the driving assembly comprises a support frame, a side of the support frame close to the protective shell is fixedly connected to an electric push rod, and a telescopic end of the electric push rod is fixedly connected to the protective shell.

[0017] Compared with the prior art, the present invention has the following beneficial effects:

[0018] 1. The present invention provides a first elastic telescopic rod and a special-shaped plate. After the special-shaped plate loses external restriction, the first elastic telescopic rod releases spring force to push the special-shaped plate to move quickly into the protective shell. The rapid movement of the special-shaped plate is conducive to enabling the resistor to be detected to be separated from the test device after a short circuit occurs during the test process, thereby preventing the resistor from continuing to contact the test device, thereby preventing overheating, burning or other potential dangerous situations caused by continuous short circuit.

[0019] 2. Through the setting of the sleeve, when the special-shaped plate pushes the resistor upward, the sleeve will be located on the path of the resistor pins, acting as a bending piece. As the special-shaped plate rises, the sleeve will properly intercept and bend the resistor pins to ensure that the pins will not be stuck or hinder the smooth entry of the resistor due to being too long. This design not only solves the problem of the pins being too long, but also ensures that the resistor can smoothly and safely enter the protection box, further improving the reliability and safety of the system.

[0020] 3. The present invention adopts the arrangement of a ring-shaped sealing box. On the one hand, the airflow will guide the scattered cooling powder during the flow to reduce the downward drift of the cooling powder, which helps to ensure that the cooling powder can cover the surface of the resistor for a longer time and maintain an effective cooling effect. On the second hand, the cooling powder entering the ring-shaped sealing box is continuously guided to the resistor through the one-way air outlet, which helps to ensure that the cooling powder can be continuously replenished to the surface of the resistor, providing a continuous cooling effect and avoiding the re-ignition of the resistor. On the third hand, the airflow not only carries the cooling powder during the flow, but also takes away the heat around the resistor to further reduce the temperature. Through this multiple cooling method, the risk of resistor combustion can be effectively reduced. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is a schematic diagram of the overall structure of the leakage protection device of the present invention.

[0022] Figure 2 It is a schematic diagram of the structure of the test box of the present invention after sectioning.

[0023] Figure 3 It is a schematic structural diagram of the present invention along the cross section of the receiving box.

[0024] Figure 4 It is a schematic diagram of the structure of the test board of the present invention.

[0025] Figure 5 It is a schematic structural diagram of the connection between the limiting block and the bending column of the present invention.

[0026] Figure 6 It is a schematic structural diagram of the connection between the sleeve and the bending column of the present invention.

[0027] Figure 7 It is a schematic structural diagram of the connection between the protective shell and the anti-collision pad of the present invention.

[0028] Figure 8 It is a schematic diagram of the structure of the present invention along the cross section of the protective shell.

[0029] Fig. 9 It is a schematic structural diagram of the special-shaped plate of the present invention.

[0030] Fig.10 It is a schematic diagram of the structure of the present invention along the cross section of the test board.

[0031] In the figure: 1. test box; 2. receiving box; 3. test plate; 4. special-shaped groove; 401. rectangular groove; 402. circular groove; 5. first elastic telescopic rod; 6. special-shaped plate; 7. protective shell; 8. ventilator; 9. trigger rod; 10. through hole; 11. second elastic telescopic rod; 12. limiting block; 13. inclined surface; 14. protection pad; 15. bending column; 16. sleeve; 17. sliding block; 18. straightening rod; 19. anti-collision pad; 20. cooling powder bag; 21. round sealing box; 22. blower; 23. one-way air outlet; 24. cavity; 25. adsorption port; 26. connecting hole; 27. conveying pipe; 28. flow hole; 29. ​​test frame; 30. test piece; 31. test probe; 32. support frame; 33. electric push rod; 34. sliding groove. DETAILED DESCRIPTION

[0032] The following description is used to disclose the present invention so that those skilled in the art can implement the present invention. The preferred embodiments described below are only examples, and those skilled in the art may think of other obvious variations.

[0033] Application scenarios: In actual application, during the resistance test, if the leakage problem is not handled in time, it may bring serious consequences. In mild cases, leakage may cause the function of the resistor or other test equipment to be damaged; in extreme cases, leakage may cause abnormal increase in current and cause overheating of certain components, especially when the insulating material has aged or been damaged. Overheating may quickly escalate to burning of the equipment or even cause a fire. Although existing protection devices (such as leakage circuit breakers) can quickly cut off the power supply when leakage is detected to prevent electric shock and fire, once a fire occurs, these devices usually do not have subsequent fire extinguishing functions and cannot effectively deal with fires that have already occurred.

[0034] like Figures 1 to 10 A polymer material resistance test leakage protection device shown in the figure comprises a test box 1, wherein the test box 1 is symmetrically provided with test devices inside, and is used to connect two pins of a resistor to be tested, to form a path and to perform measurement, and the test box 1 is fixedly connected with a receiving box 2 inside, and the receiving box 2 is located between two groups of test devices, and the top of the receiving box 2 is fixedly connected with a test board 3, and the test board 3 is symmetrically provided with resistance limit components, and is used to limit the position of the resistor to be tested;

[0035] A special-shaped groove 4 is provided on the test plate 3, and the special-shaped groove 4 is composed of two rectangular grooves 401 and a central circular groove 402, and the circular groove 402 is connected with the rectangular grooves 401 on both sides, and a first elastic telescopic rod 5 is fixedly connected to the inside of the receiving box 2, and a special-shaped plate 6 adapted to the special-shaped groove 4 is fixedly connected to the telescopic end of the first elastic telescopic rod 5, and a protective shell 7 is provided above the special-shaped plate 6, and a driving component is provided on the top of the protective shell 7 for pushing the protective shell 7 to move vertically up and down;

[0036] Two ventilators 8 and two trigger rods 9 are fixedly connected inside the protective shell 7. The trigger rods 9 are used to trigger the two sets of resistance limit assemblies to move away from each other. Through holes 10 for the ventilators 8 to pass through are symmetrically opened on the special-shaped plate 6, and the opening direction of the through holes 10 coincides with the moving direction of the ventilators 8.

[0037] It should be understood that when performing a resistance test, the resistor to be tested is first placed at a predetermined test position; in order to ensure that the resistor to be tested does not move or shift during the entire test process, a specially designed resistor limiter is used to fix the resistor. These resistor limiters can firmly limit the position of the resistor to prevent any displacement during the test process, so that the test device can contact the resistor more accurately and ensure the reliability and consistency of the test results;

[0038] After the preparation is completed, the test device conducts a power-on test on the two pins of the resistor to be detected. If a short circuit or the like is caused by various factors during the test, the driving component is first controlled to quickly push the protective shell 7 to move vertically downward, and the protective shell 7 then drives the two ventilation rods to move downward synchronously. After the two trigger rods 9 contact the resistor limit assembly, pressure is applied to push the two groups of resistor limit assemblies away from each other, so that the resistor limit assembly releases the interception of the special-shaped plate 6. As the special-shaped plate 6 loses external restrictions, the first elastic telescopic rod 5 releases the spring force to push the special-shaped plate 6 to move quickly toward the inside of the protective shell 7. The rapid movement of the special-shaped plate 6 is conducive to the separation of the resistor to be detected from the test device after a short circuit occurs during the test, so as to avoid the resistor from continuing to contact the test device, thereby preventing overheating, combustion or other potential dangerous situations caused by continuous short circuit.

[0039] During this process, when the special-shaped plate 6 moves upward, the through hole 10 thereon will move upward with the special-shaped plate 6 and slide along the outer wall of the ventilation tube 8. Since the through hole 10 is open and has enough space to accommodate the ventilation tube 8, there will be no interference or obstruction between the ventilation tube 8, the through hole 10 and the resistor limiting assembly during the movement. In this way, the special-shaped plate 6, the ventilation tube 8 and the protective shell 7 together constitute an effective limiting mechanism, which is conducive to ensuring that the resistor can be smoothly pushed into the protective shell 7 to achieve safety protection. On the one hand, in the process of the resistor being pushed into the protective shell 7, under the action of the limiting mechanism, the resistor follows the rising action of the special-shaped plate 6, which is conducive to ensuring that the resistor will not accidentally fall onto the test board 3, thereby avoiding damage to the test board 3 or other components. On the other hand, the resistor is safely left in the protective shell 7, which is convenient for the operator to carry out further processing and prevent the resistor itself from overheating and burning or scalding other components.

[0040] As a further implementation scheme of the present invention, the resistance limit assembly includes two second elastic telescopic rods 11, which are fixedly connected to the top of the test board 3 through two mounting plates, and the telescopic ends of the two second elastic telescopic rods 11 are fixedly connected with limiting blocks 12, which are slidingly connected to the test board 3, and the two limiting blocks 12 are provided with inclined surfaces 13 on one side close to each other, and the inclined surface 13 is adapted to the trigger rod 9.

[0041] It should be understood that after the trigger rod 9 moves downward following the protective shell 7 and contacts the limiting block 12, as the trigger rod 9 continues to descend, it will exert a thrust on the limiting block 12, and under the guidance of the inclined surface 13 on the limiting block 12, the two limiting blocks 12 will compress the second elastic telescopic rod 11 to make way. After the two limiting blocks 12 move away from each other by a certain distance, the special-shaped plate 6 is completely exposed. At this time, the special-shaped plate 6 moves upward rapidly under the action of the first elastic telescopic rod 5, thereby helping to drive the resistor to move toward the inside of the protective box.

[0042] As a further embodiment of the present invention, a protection pad 14 is fixedly connected to one side of the two limiting blocks 12 that are close to each other.

[0043] It should be understood that the protection pad 14 can provide a certain degree of protection to the resistor to be detected during the clamping process, and the protection pad 14 is made of rubber that can withstand a certain temperature, so that the protection pad 14 fits the outer wall of the resistor to be detected during the clamping process.

[0044] As a further implementation scheme of the present invention, two sets of bending components are provided on the side walls of the two limiting blocks 12, and the bending components include two bending columns 15, and the two bending columns 15 are respectively fixedly connected to the side walls of the limiting blocks 12 at corresponding positions, and the two bending columns 15 are slidably sleeved with sleeves 16.

[0045] It should be understood that, in the above-mentioned embodiment, the purpose of protection is achieved by pushing the resistor to be detected into the interior of the protection box. However, during the test process, if the pin of the resistor to be detected is too long, it may encounter obstacles when being pushed into the interior of the protection box, affecting the effectiveness of the entire protection mechanism. In order to address this problem, a sleeve 16 is specially designed. When the special-shaped plate 6 pushes the resistor upward, the sleeve 16 will be located on the path of the resistor pin and act as a bending piece. As the special-shaped plate 6 rises, the sleeve 16 will properly intercept and bend the resistor pin to ensure that the pin will not get stuck or hinder the smooth entry of the resistor due to being too long. This design not only solves the problem of the pin being too long, but also ensures that the resistor can smoothly and safely enter the interior of the protection box, further improving the reliability and safety of the system.

[0046] As a further implementation scheme of the present invention, a sliding groove 34 is opened on the outer wall of the sleeve 16, and sliding blocks 17 are fixedly connected to the outer walls of the two bending columns 15. The bottoms of the two sliding blocks 17 are fixedly connected to straightening rods 18 for limiting the pins of the resistor to be detected.

[0047] It should be understood that by placing the pins of the resistor to be detected between the two straightening rods 18, it is helpful to maintain the straightness of the pins of the resistor to be detected, and when the resistor is pushed into the protection box, when the two limiting blocks 12 move away from each other under the action of the trigger rod 9, the two limiting blocks 12 will also drive the two bending columns 15 away from each other, the two bending columns 15 will drive the two sliding blocks 17 away from each other, and the two sliding blocks will drive the two straightening rods 18 away from each other, which is beneficial to contact the pins of the resistor and facilitate the smooth upward movement of the resistor.

[0048] As a further implementation scheme of the present invention, an anti-collision pad 19 is fixedly connected to the interior of the protective shell 7, which is used to protect the resistor when the first elastic telescopic rod 5 pushes the resistor to move through the special-shaped plate 6. A plurality of cooling powder bags 20 that are automatically sprinkled when the specified temperature is reached are installed inside the protective shell 7, which are used to cool the interior of the protective shell 7.

[0049] It should be understood that, in the above example, in order to prevent the resistor from damaging other components due to combustion or overheating when a fault occurs, a mechanism is designed to quickly push the resistor into the protection box. This measure can separate the resistor from the test device in a short time to prevent its high temperature or flame from directly contacting other sensitive components. However, in actual application, if the resistor is not handled in time after entering the protection box, the resistor may still spontaneously ignite due to high temperature, thereby causing violent combustion, releasing a large amount of heat or smoke, and causing potential damage to other components inside the protection box; therefore, after the special-shaped plate 6 pushes the resistor smoothly into the interior of the protection box, the anti-collision pad 19 helps to prevent the resistor from colliding with the top of the protection box after being sent to the interior of the protection box, thereby causing damage to the resistor; and a plurality of cooling powder bags 20 are provided inside the protective shell 7. If it is monitored that the temperature of the resistor itself is too high, the cooling powder bag 20 will be automatically scattered, which is beneficial to cooling the resistor and helps prevent the resistor from burning due to excessive temperature.

[0050] It should be noted that the cooling substances in the cooling powder bag 20 include but are not limited to sodium bicarbonate, ammonium chloride, etc., which are existing mature technologies and will not be elaborated in detail.

[0051] As a further implementation scheme of the present invention, the interior of the protective shell 7 is fixedly connected to a circular sealed box 21, and a blower 22 is fixedly installed on the outer wall of the circular sealed box 21. The air outlet of the blower 22 is fixedly connected to the circular sealed box 21 through an air duct, and a plurality of one-way air outlets 23 are opened on the outer wall of the circular sealed box 21.

[0052] It should be understood that, although the above embodiments illustrate that the temperature of the resistor can be effectively reduced by spraying the cooling powder, this cooling method has some limitations. First, as the cooling powder gradually falls downward under the action of gravity, its coverage area and thickness will decrease, resulting in a gradual weakening of the cooling effect, which may cause the resistor to continue to burn. Secondly, the falling cooling powder may scatter onto other components, affecting or potentially damaging their normal operation; therefore, in order to more effectively deal with the situation of resistor overheating or burning, a circular sealed box 21 is set inside the protective shell 7, and a blower 22 is connected. By controlling the blower 22 to blow air into the circular sealed box 21, a reciprocating airflow is formed, and a plurality of air outlets facing the resistor are opened on the side wall of the circular sealed box 21. On the one hand, the airflow will guide the scattered cooling powder during the flow process to reduce its downward drift, which helps to ensure that the cooling powder can cover the surface of the resistor for a longer time and maintain an effective cooling effect. On the second hand, the cooling powder entering the circular sealed box 21 is continuously guided to the resistor through the one-way air outlet 23, which helps to ensure that the cooling powder can be continuously replenished to the surface of the resistor, providing a continuous cooling effect and avoiding the re-ignition of the resistor. On the third hand, the airflow not only carries the cooling powder during the flow process, but also takes away the heat around the resistor to further reduce the temperature. Through this multiple cooling method, the risk of resistor combustion can be effectively reduced.

[0053] As a further implementation scheme of the present invention, a cavity 24 is opened inside the special-shaped plate 6, a suction port 25 is opened on the top of the special-shaped plate 6, a connecting hole 26 is opened on the special-shaped plate, the connecting hole 26 is connected to the through hole 10, a conveying pipe 27 is fixedly connected to the outer wall of the ventilation tube 8, the conveying pipe 27 is connected to the circular sealing box 21, and a flow hole 28 is opened on the outer wall of the ventilation tube 8. After the ventilation tube 8 moves downward to the specified position, the flow hole 28 is connected to the connecting hole 26.

[0054] It should be understood that in the above design, by providing the air flow circulation formed by the ring-shaped sealing box 21 and the blower 22, most of the scattered cooling powder is successfully guided to the resistor surface, reducing the downward drifting of the cooling powder. However, although this mechanism significantly improves the cooling effect, a part of the cooling powder will inevitably fall and deposit around the test board 3. How to effectively deal with the cooling powder that has fallen and deposited has become an urgent problem to be solved. Therefore, in this embodiment, after a relative displacement is generated between the through hole 10 and the ventilator 8, the flow hole 28 is connected to the connecting hole 26, and a one-way valve is provided inside the delivery pipe 27, so that The air can only flow toward the inside of the circular sealed box 21. Therefore, during the air flow inside the circular sealed box 21, the air inside the delivery pipe 27 will be synchronously pumped into the inside of the circular sealed box 21. The delivery pipe 27 draws out the air inside the cavity 24 through the flow holes 28 on the ventilator 8, thereby constructing a negative pressure space near the adsorption port 25. On the one hand, a small amount of cooling powder that has fallen down can be adsorbed and collected through the adsorption port 25 to prevent it from falling and accumulating around the test board 3. On the other hand, the adsorption force generated by the adsorption port 25 can adsorb the resistor, which helps to prevent it from falling during the rising stage.

[0055] As a further embodiment of the present invention, the testing device includes a testing frame 29 , a testing piece 30 is fixedly connected to the testing frame 29 , and a testing probe 31 is fixedly connected to the testing piece 30 .

[0056] It should be understood that the test piece 30 can use existing equipment such as a digital bridge, a resistance tester, etc., and be connected to the test probe 31. During the test, the test probe 31 is respectively connected to the two pins of the resistor to be detected, and the resistor is powered on to detect the resistor. The application range is relatively wide. This is an existing mature technology and will not be disclosed in detail.

[0057] As a further embodiment of the present invention, the driving assembly includes a support frame 32 , and an electric push rod 33 is fixedly connected to one side of the support frame 32 close to the protective shell 7 , and the telescopic end of the electric push rod 33 is fixedly connected to the protective shell 7 .

[0058] It should be understood that by controlling the electric push rod 33 to start pushing out, the electric push rod 33 pushes the protective shell 7 to start pushing out, thereby driving the protective shell 7 to move vertically upward or downward.

[0059] Working principle of the present invention:

[0060] When conducting a resistance test, first place the resistor to be tested at the predetermined test position; in order to ensure that the resistor to be tested does not move or shift during the entire test process, a specially designed resistor limiter is used to fix the resistor. These resistor limiters can firmly limit the position of the resistor to prevent any displacement during the test, so that the test device can contact the resistor more accurately and ensure the reliability and consistency of the test results;

[0061] After the preparation is completed, the test device conducts a power-on test on the two pins of the resistor to be detected. If a short circuit or the like is caused by various factors during the test, the driving component is first controlled to quickly push the protective shell 7 to move vertically downward, and the protective shell 7 then drives the two ventilation rods to move downward synchronously. After the two trigger rods 9 contact the resistor limit assembly, pressure is applied to push the two groups of resistor limit assemblies away from each other, so that the resistor limit assembly releases the interception of the special-shaped plate 6. As the special-shaped plate 6 loses external restrictions, the first elastic telescopic rod 5 releases the spring force to push the special-shaped plate 6 to move quickly toward the inside of the protective shell 7. The rapid movement of the special-shaped plate 6 is conducive to the separation of the resistor to be detected from the test device after a short circuit occurs during the test, so as to avoid the resistor from continuing to contact the test device, thereby preventing overheating, combustion or other potential dangerous situations caused by continuous short circuit.

[0062] During this process, when the special-shaped plate 6 moves upward, the through hole 10 thereon will move upward with the special-shaped plate 6 and slide along the outer wall of the ventilation tube 8. Since the through hole 10 is open and has enough space to accommodate the ventilation tube 8, there will be no interference or obstruction between the ventilation tube 8, the through hole 10 and the resistor limiting assembly during the movement. In this way, the special-shaped plate 6, the ventilation tube 8 and the protective shell 7 together constitute an effective limiting mechanism, which is conducive to ensuring that the resistor can be smoothly pushed into the protective shell 7 to achieve safety protection. On the one hand, in the process of the resistor being pushed into the protective shell 7, under the action of the limiting mechanism, the resistor follows the rising action of the special-shaped plate 6, which is conducive to ensuring that the resistor will not accidentally fall onto the test board 3, thereby avoiding damage to the test board 3 or other components. On the other hand, the resistor is safely left in the protective shell 7, which is convenient for the operator to carry out further processing and prevent the resistor itself from overheating and burning or scalding other components.

[0063] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions only describe the principles of the present invention. The present invention may be subject to various changes and improvements without departing from the spirit and scope of the present invention, and these changes and improvements fall within the scope of the present invention claimed.

Claims

1. A polymer material resistance test leakage protection device, comprising a test box (1), wherein the test box (1) is symmetrically provided with a test device inside, which is used to connect two pins of a resistor to be tested to form a path and perform measurement, and is characterized in that: The interior of the test box (1) is fixedly connected to a receiving box (2), the receiving box (2) is located between the two groups of test devices, the top of the receiving box (2) is fixedly connected to a test board (3), and the test board (3) is symmetrically provided with resistance limit assemblies for limiting the position of the resistance to be tested; The test plate (3) is provided with a special-shaped groove (4), which is composed of two rectangular grooves (401) and a central circular groove (402), and the circular groove (402) is connected to the rectangular grooves (401) on both sides. The interior of the receiving box (2) is fixedly connected with a first elastic telescopic rod (5), and the telescopic end of the first elastic telescopic rod (5) is fixedly connected with a special-shaped plate (6) adapted to the special-shaped groove (4). A protective shell (7) is provided above the special-shaped plate (6), and a driving component is provided on the top of the protective shell (7) for driving the protective shell (7) to move vertically up and down; Two ventilating tubes (8) and two trigger rods (9) are fixedly connected inside the protective shell (7), and the trigger rods (9) are used to trigger the two groups of resistance limit assemblies to move away from each other. Through holes (10) for the ventilating tubes (8) to pass through are symmetrically opened on the special-shaped plate (6), and the opening direction of the through holes (10) coincides with the moving direction of the ventilating tubes (8).

2. A polymer material resistance test leakage protection device according to claim 1, characterized in that: The resistance limit assembly comprises two second elastic telescopic rods (11), the two second elastic telescopic rods (11) are fixedly connected to the top of the test plate (3) through two mounting plates, the telescopic ends of the two second elastic telescopic rods (11) are fixedly connected to limit blocks (12), the limit blocks (12) are slidably connected to the test plate (3), and the two limit blocks (12) are provided with inclined surfaces (13) on the sides close to each other, and the inclined surfaces (13) are adapted to the trigger rod (9).

3. A polymer material resistance test leakage protection device according to claim 2, characterized in that: A protection pad (14) is fixedly connected to one side of the two limiting blocks (12) that are close to each other.

4. A polymer material resistance test leakage protection device according to claim 2, characterized in that: Two groups of bending components are provided on the side walls of the two limiting blocks (12), and the bending components include two bending columns (15). The two bending columns (15) are respectively fixedly connected to the side walls of the limiting blocks (12) at corresponding positions, and the two bending columns (15) are slidably sleeved with sleeves (16).

5. A polymer material resistance test leakage protection device according to claim 4, characterized in that: A sliding groove (34) is provided on the outer wall of the sleeve (16), a sliding block (17) is fixedly connected to the outer walls of the two bending columns (15), and a straightening rod (18) is fixedly connected to the bottom of the two sliding blocks (17) for limiting the pins of the resistor to be detected.

6. A polymer material resistance test leakage protection device according to claim 1, characterized in that: The interior of the protective shell (7) is fixedly connected with an anti-collision pad (19) for protecting the resistor when the first elastic telescopic rod (5) pushes the resistor to move via the special-shaped plate (6); the interior of the protective shell (7) is provided with a plurality of cooling powder bags (20) which are automatically sprinkled when a specified temperature is reached, for cooling the interior of the protective shell (7).

7. A polymer material resistance test leakage protection device according to claim 1, characterized in that: The protective shell (7) is fixedly connected to a circular sealed box (21) inside, a blower (22) is fixedly installed on the outer wall of the circular sealed box (21), an air outlet of the blower (22) is fixedly connected to the circular sealed box (21) through an air duct, and a plurality of one-way air outlets (23) are opened on the outer wall of the circular sealed box (21).

8. A polymer material resistance test leakage protection device according to claim 7, characterized in that: The interior of the special-shaped plate (6) is provided with a cavity (24), the top of the special-shaped plate (6) is provided with a suction port (25), the special-shaped plate (6) is provided with a connecting hole (26), the connecting hole (26) is communicated with the through hole (10), a conveying pipe (27) is fixedly connected to the outer wall of the ventilation tube (8), the conveying pipe (27) is communicated with the circular sealing box (21), the outer wall of the ventilation tube (8) is provided with a flow hole (28), after the ventilation tube (8) moves downward to a specified position, the flow hole (28) is communicated with the connecting hole (26).

9. A polymer material resistance test leakage protection device according to claim 1, characterized in that: The testing device comprises a testing frame (29), a testing piece (30) is fixedly connected to the testing frame (29), and a testing probe (31) is fixedly connected to the testing piece (30).

10. A polymer material resistance test leakage protection device according to claim 1, characterized in that: The driving assembly comprises a support frame (32), a side of the support frame (32) close to the protective shell (7) is fixedly connected to an electric push rod (33), and a telescopic end of the electric push rod (33) is fixedly connected to the protective shell (7).

Images