Depth testing device for switch moving contact

Abstract

The utility model relates to the technical field of contact testing, in particular to a depth testing device for a switch moving contact, which comprises a base, the upper end of the base is connected with a positioning tube, two sides of the positioning tube are provided with threaded sleeves, one side of each threaded sleeve is connected with a connecting plate, one side of each connecting plate is connected with a movable plate, and the movable plate is connected with a fixed plate. According to the utility model, when the movable plate pushes the contact to descend, a worker can detect the length of the contact more accurately through the final position of the movable plate and according to the number of rotation and rising turns of the scale teeth and the threaded rod, thereby detecting whether the length of the contact is within a specified range. And meanwhile, when the fixed plate descends, certain resistance is generated due to the spring, so that when the movable plate extrudes the contact to descend, the strength of the contact is detected synchronously, the problem of potential deformation is prevented, it is ensured that the actual position of the contact is truly reflected by a measurement result, and the depth testing device for the switch moving contact is realized.

Description

Technical Field

[0001] This utility model relates to the field of contact testing technology, specifically to a device for testing the depth of a switch moving contact. Background Technology

[0002] With the rapid development of society and economy, various industries have put forward extremely high requirements for the stability and reliability of power supply. The scale of power system continues to expand and the grid structure is becoming increasingly complex. This makes the importance of switchgear more and more prominent. As a key component for controlling and protecting power circuits, the performance of switchgear is directly related to the safe operation of the entire power system. The depth of moving contact is one of the key parameters that determines the electrical performance of switchgear.

[0003] Traditional contact testing often only tests the contact depth, which is a limited approach and cannot detect potential problems inside the contact. This can affect the use of the contact in subsequent applications. In addition, the limited testing method cannot detect the contact from multiple angles, which can lead to inaccurate test results.

[0004] In view of this, this paper studies and improves the existing problems, and provides a device for testing the depth of a switch moving contact. The device has a reasonable structural design, high stability, and can be used in various aspects. The aim of this technology is to solve the problems and improve its practical value. Utility Model Content

[0005] This invention allows operators to more accurately detect the contact length by observing the final position of the movable plate and the number of rotations of the scale teeth and threaded rod when the contact is lowered. This ensures that the contact length is within the specified range. Simultaneously, the fixed plate generates resistance due to the spring as it descends, thus simultaneously detecting the contact strength while the movable plate is pressing the contact downwards. This prevents potential deformation and ensures that the measurement results accurately reflect the actual position of the contact, thus realizing a device for testing the depth of a switch movable contact.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a switch moving contact depth testing device, comprising a base, a positioning tube connected to the upper end of the base, threaded sleeves provided on both sides of the positioning tube, a connecting plate connected to one side of the threaded sleeve, a movable plate connected to one side of the connecting plate, an air pipe provided on one side of the movable plate, a connecting pipe A connected to one end of the air pipe, a branch pipe connected to the outside of the air pipe, a cylinder provided on one side of the threaded sleeve, a push rod provided at the lower end of the base, a spring connected to the outside of the push rod, a current plate provided at the lower end of the push rod, and an indicator light electrically connected to one end of the current plate.

[0007] Preferably, the positioning tube is fixedly connected to the center of the upper end of the base, and two sets of guide grooves are opened on both sides of the positioning tube. The base is provided with a slot at the lower end of the positioning tube. Two sets of threaded sleeves are provided on both sides of the positioning tube. The lower end of both sets of threaded sleeves is provided with a slot. The threaded sleeves are connected to the slot damping connection. Threaded rods are threadedly connected inside both sets of threaded sleeves.

[0008] Preferably, both sets of threaded sleeves are fixedly connected to a connecting plate on one side of the positioning tube, and the size of the connecting plate matches the guide groove. One end of each set of connecting plates is movably connected to a movable plate. The air pipe is fixedly connected to the upper end of the connecting plate on one side of the movable plate. A push rod is movably connected inside the air pipe. The push rod is movably connected to the movable plate. One end of the air pipe is fixedly connected to a connecting pipe A, and the other end of the connecting pipe A is connected to the air supply equipment.

[0009] Preferably, a branch pipe is fixedly connected to the outside of the positioning tube, and the other end of the branch pipe is fixedly connected to the cylinder. The cylinder is fixedly connected to the upper end of the base, located on one side of the threaded sleeve, and the output end of the cylinder is connected to the threaded sleeve.

[0010] Preferably, a fixing plate is fixedly connected inside the slot, a top rod is connected inside the fixing plate, a top plate is provided at the upper end of the top rod, one end of the spring is fixedly connected to the fixing plate, and the other end is fixedly connected to the top rod.

[0011] Preferably, an electric control block is fixedly connected to the lower end of the top rod, and a current plate is fixedly connected to the lower end of the base. The electric control block and the current plate are electrically connected.

[0012] Preferably, two sets of reset cylinders are fixedly connected inside the base, and the two sets of reset cylinders and the two sets of connecting plates are located on the same vertical plane.

[0013] This invention has the following beneficial effects: After the push rod extends a certain distance, air pressure enters the branch pipe, which then delivers the air pressure to the cylinder, causing the cylinder to push the threaded sleeve on one side to descend. As the threaded sleeve descends, the connecting pipe A continuously pressurizes the push rod, keeping it in a continuously extending state. Thus, as one threaded sleeve descends, the movable plate connects to the connecting plate, synchronously driving the other threaded sleeve to descend as well. Simultaneously, the descending threaded sleeve also drives the threaded rod to rotate and rise. When the movable plate pushes the contact point downwards, the operator can use the final position of the movable plate and the scale teeth and thread... The number of rotations of the rod as it rises more accurately detects the contact length, thus ensuring it is within the specified range. When the contact enters the positioning tube, it rests on the top of the top plate. As the movable plate presses the contact downwards, the fixed plate moves downwards synchronously. Because the fixed plate is connected to a spring, the spring generates resistance as the fixed plate descends. Since the spring force is within the acceptable range for the contact, the strength of the contact is simultaneously detected as the movable plate presses it downwards. This allows for the timely detection of potential deformation issues, ensuring the measurement results accurately reflect the actual contact position. This provides accurate data for switchgear performance evaluation and prevents impacts on subsequent use. Attached Figure Description

[0014] Figure 1 This is one of the overall structural diagrams of a switch moving contact depth testing device proposed in this utility model;

[0015] Figure 2 This is the second internal structure diagram of a switch moving contact depth testing device proposed in this utility model;

[0016] Figure 3 This is one of the structural cross-sectional views of a switch moving contact depth testing device proposed in this utility model;

[0017] Figure 4 The second structural cross-sectional view of the switch moving contact depth testing device proposed in this utility model;

[0018] Figure 5 This is a partial structural diagram of a switch moving contact depth testing device proposed in this utility model.

[0019] Legend:

[0020] 1. Base; 2. Positioning tube; 3. Threaded sleeve; 4. Threaded rod; 5. Connecting plate; 6. Movable plate; 7. Air pipe; 8. Push rod; 9. Connecting pipe A; 10. Branch pipe; 11. Cylinder; 12. Fixing plate; 13. Push rod; 14. Spring; 15. Electrical control block; 16. Current plate; 17. Indicator light; 18. Reset cylinder. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figure 1-5 An embodiment of this utility model provides a switch moving contact depth testing device, including a base 1, a positioning tube 2 connected to the upper end of the base 1, threaded sleeves 3 provided on both sides of the positioning tube 2, a connecting plate 5 connected to one side of the threaded sleeve 3, a movable plate 6 connected to one side of the connecting plate 5, an air pipe 7 provided on one side of the movable plate 6, a connecting pipe A9 connected to one end of the air pipe 7, a branch pipe 10 connected to the outside of the air pipe 7, a cylinder 11 provided on one side of the threaded sleeve 3, a push rod 13 provided at the lower end of the base 1, a spring 14 connected to the outside of the push rod 13, a current plate 16 provided at the lower end of the push rod 13, and an indicator light 17 electrically connected to one end of the current plate 16.

[0023] In an optional embodiment: the positioning tube 2 is fixedly connected to the center of the upper end of the base 1, and two sets of guide grooves are opened on both sides of the positioning tube 2. The base 1 is provided with a slot at the lower end of the positioning tube 2. Two sets of threaded sleeves 3 are provided on both sides of the positioning tube 2. The lower end of both sets of threaded sleeves 3 is provided with a slot. The threaded sleeves 3 are connected to the slot damping. Threaded rods 4 are threadedly connected inside both sets of threaded sleeves 3. Before using the equipment, the contact is placed inside the base 1. The size inside the base 1 matches the size of the contact. A scale is provided on both sides of the guide groove.

[0024] In an optional embodiment: two sets of threaded sleeves 3 are fixedly connected to a connecting plate 5 on one side of the positioning tube 2. The size of the connecting plate 5 matches the guide groove. One end of the connecting plate 5 is movably connected to a movable plate 6. The air pipe 7 is fixedly connected to the upper end of the connecting plate 5 on one side of the movable plate 6. A push rod 8 is movably connected inside the air pipe 7. The push rod 8 is movably connected to the movable plate 6. One end of the air pipe 7 is fixedly connected to a connecting pipe A9. The other end of the connecting pipe A9 is connected to the air supply equipment. When using the equipment, the operator turns on the air supply equipment. The air pressure will enter the air pipe 7 through the connecting pipe A9. After the air pressure enters the air pipe 7, the push rod 8 will extend outward. When the push rod 8 extends outward, it will push the movable plate 6 to flip to one side, thereby connecting the two sets of movable plates 6. At the same time as the movable plate 6 flips down, the contact will be fixed.

[0025] In an optional embodiment: a branch pipe 10 is fixedly connected to the outside of the positioning tube 2, and the other end of the branch pipe 10 is fixedly connected to the cylinder 11. The cylinder 11 is fixedly connected to the upper end of the base 1, located on one side of the threaded sleeve 3. The output end of the cylinder 11 is connected to the threaded sleeve 3. After the push rod 8 extends a certain distance, air pressure will enter the inside of the branch pipe 10, so the branch pipe 10 will deliver air pressure to the inside of the cylinder 11, so the cylinder 11 will push the threaded sleeve 3 on one side to descend. When the threaded sleeve 3 descends, because the connecting pipe A9 continuously inflates the inside of the push rod 8, the push rod 8 will remain in a continuously pushed state. Thus, when the threaded sleeve 3 on one side descends, it will be connected to the connecting plate 5 through the movable plate 6 to synchronously drive the threaded sleeve 3 on the other side to descend synchronously. And when the threaded sleeve 3 descends, it will synchronously drive the threaded rod 4 to rotate and rise. When the movable plate 6 pushes the contact to descend, the operator can use the final position of the movable plate 6 and the number of rotations of the scale teeth and the threaded rod 4 to more accurately detect the length of the contact, thereby detecting whether the length of the contact is within the specified range.

[0026] In an optional embodiment: a fixed plate 12 is fixedly connected inside the slot, and a top rod 13 is connected inside the fixed plate 12. A top plate is provided at the upper end of the top rod 13. One end of the spring 14 is fixedly connected to the fixed plate 12, and the other end is fixedly connected to the top rod 13. When the contact enters the positioning tube 2, it will fall on the upper end of the top plate. When the movable plate 6 presses the contact down, the fixed plate 12 will move down synchronously. Because the fixed plate 12 is connected to the spring 14, the fixed plate 12 will generate a certain resistance when it descends. The force of the spring 14 is within the acceptable range of the contact. Therefore, when the movable plate 6 presses the contact down, the strength of the contact will be detected simultaneously, so that potential deformation problems can be detected in time, ensuring that the measurement results truly reflect the actual position of the contact, providing accurate data for the performance evaluation of the switch cabinet, and preventing the impact on subsequent use.

[0027] In an optional embodiment: an electrical control block 15 is fixedly connected to the lower end of the top rod 13, and a current plate 16 is fixedly connected to the lower end of the base 1. The electrical control block 15 and the current plate 16 are electrically connected. After the contact moves to the designated position, the electrical control block 15 will contact the current plate 16, thereby illuminating the indicator light 17. Since the other end of the connecting tube A9 extends to the lower end of the threaded sleeve 3, after the threaded sleeve 3 moves to the bottom of the empty slot, it will squeeze the connecting tube A9 to stop the air intake of the air pipe 7. At this time, after the indicator light 17 is illuminated, the operator checks whether the contact is within a reasonable range according to the scale and the distance the threaded rod 4 rotates and rises. If the contact is too short, the electrical control block 15 cannot contact the current plate 16. If the contact is too long, the indicator light 17 will illuminate before the threaded sleeve 3 squeezes the connecting tube A9.

[0028] In an optional embodiment: two sets of reset cylinders 18 are fixedly connected inside the base 1. The two sets of reset cylinders 18 and the two sets of connecting plates 5 are located on the same vertical plane. After use, the operator closes the air intake device and then uses the two sets of reset cylinders 18 to push against the two sets of connecting plates 5 to make the threaded sleeve 3 rise and reset.

[0029] Working principle and process: Before using the equipment, the contact is placed inside the base 1. When using the equipment, the operator turns on the air supply equipment, and the air pressure enters the air pipe 7 through the connecting pipe A9. After the air pressure enters the air pipe 7, the push rod 8 will extend outward. When the push rod 8 extends outward, it will push the movable plate 6 to flip to one side, thereby connecting the two sets of movable plates 6. At the same time as the movable plate 6 flips down, it will fix the contact.

[0030] After the push rod 8 extends a certain distance, air pressure enters the branch pipe 10, which then delivers the air pressure to the cylinder 11. The cylinder 11 then pushes the threaded sleeve 3 on one side to descend. As the threaded sleeve 3 descends, the connecting pipe A9 continuously pressurizes the push rod 8, keeping the push rod 8 in a continuously extended state. As the threaded sleeve 3 on one side descends, it is connected to the connecting plate 5 via the movable plate 6, which simultaneously drives the threaded sleeve 3 on the other side to descend. Simultaneously, as the threaded sleeve 3 descends, it also drives the threaded rod 4 to rotate and rise. When the movable plate 6 pushes the contact to descend, the operator can more accurately detect the length of the contact by observing the final position of the movable plate 6 and the number of rotations of the threaded rod 4.

[0031] When the contact enters the positioning tube 2, it will fall on the top of the top plate. When the movable plate 6 presses the contact down, the fixed plate 12 will move down synchronously. Since the fixed plate 12 is connected to the spring 14, the fixed plate 12 will generate a certain resistance when it descends due to the spring 14, and the force of the spring 14 is within the acceptable range of the contact.

[0032] After the contact moves to the designated position, the control block 15 will contact the current plate 16, thereby illuminating the indicator light 17. Since the other end of the connecting tube A9 extends to the lower end of the threaded sleeve 3, the threaded sleeve 3 will squeeze the connecting tube A9 to stop the air intake of the air pipe 7 after it moves to the bottom of the empty slot. At this time, after the indicator light 17 illuminates, the operator checks whether the contact is within a reasonable range according to the scale and the distance the threaded rod 4 rotates and rises. If the contact is too short, the control block 15 cannot contact the current plate 16. If the contact is too long, the indicator light 17 will illuminate before the threaded sleeve 3 squeezes the connecting tube A9.

[0033] After use, the staff will turn off the air intake equipment and then use two sets of reset cylinders 18 to push against the two sets of connecting plates 5 to make the threaded sleeve 3 rise and reset.

[0034] Finally, it should be noted that the above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Although the present utility model has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. A device for testing the depth of a moving contact of a switch, comprising a base (1), characterized in that: The upper end of the base (1) is connected to a positioning tube (2), and threaded sleeves (3) are provided on both sides of the positioning tube (2). A connecting plate (5) is connected to one side of the threaded sleeve (3), and a movable plate (6) is connected to one side of the connecting plate (5). An air pipe (7) is provided on one side of the movable plate (6), and a connecting pipe A (9) is connected to one end of the air pipe (7). A branch pipe (10) is connected to the outside of the air pipe (7). A cylinder (11) is provided on one side of the threaded sleeve (3). A push rod (13) is provided at the lower end of the base (1), and a spring (14) is connected to the outside of the push rod (13). A current plate (16) is provided at the lower end of the push rod (13), and an indicator light (17) is electrically connected to one end of the current plate (16).

2. The device for testing the depth of a moving contact of a switch according to claim 1, characterized in that: The positioning tube (2) is fixedly connected to the center of the upper end of the base (1). Two sets of guide grooves are provided on both sides of the positioning tube (2). The base (1) is provided with a slot at the lower end of the positioning tube (2). Two sets of threaded sleeves (3) are provided on both sides of the positioning tube (2). The lower end of both sets of threaded sleeves (3) is provided with a slot. The threaded sleeves (3) are connected to the groove damping. Threaded rods (4) are threaded inside both sets of threaded sleeves (3).

3. The device for testing the depth of a moving contact of a switch according to claim 1, characterized in that: Both sets of threaded sleeves (3) are fixedly connected to a connecting plate (5) on one side of the positioning tube (2). The size of the connecting plate (5) matches the guide groove. One end of the connecting plate (5) is movably connected to a movable plate (6). The air pipe (7) is fixedly connected to the upper end of the connecting plate (5) on one side of the movable plate (6). The air pipe (7) is movably connected to a push rod (8). The push rod (8) is movably connected to the movable plate (6). One end of the air pipe (7) is fixedly connected to a connecting pipe A (9). The other end of the connecting pipe A (9) is connected to the air supply equipment.

4. The device for testing the depth of a moving contact of a switch according to claim 1, characterized in that: The positioning tube (2) is fixedly connected to a branch tube (10) on the outside. The other end of the branch tube (10) is fixedly connected to a cylinder (11). The cylinder (11) is fixedly connected to the upper end of the base (1) and is located on one side of the threaded sleeve (3). The output end of the cylinder (11) is connected to the threaded sleeve (3).

5. The device for testing the depth of a moving contact of a switch according to claim 2, characterized in that: A fixing plate (12) is fixedly connected inside the slot. A top rod (13) is connected inside the fixing plate (12). A top plate is provided at the upper end of the top rod (13). One end of the spring (14) is fixedly connected to the fixing plate (12), and the other end is fixedly connected to the top rod (13).

6. The device for testing the depth of a moving contact of a switch according to claim 1, characterized in that: The lower end of the top rod (13) is fixedly connected to an electric control block (15), and the lower end of the base (1) is fixedly connected to a current plate (16). The electric control block (15) and the current plate (16) are electrically connected.

7. The device for testing the depth of a moving contact of a switch according to claim 1, characterized in that: The base (1) is internally fixedly connected to two sets of reset cylinders (18), and the two sets of reset cylinders (18) and the two sets of connecting plates (5) are located on the same vertical plane.

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