Relay adhesion detection system and detection method

Abstract

The invention discloses a relay adhesion detection system and detection method, and belongs to the field of relay detection. The relay adhesion detection system comprises a strip-shaped plate and further comprises a universal meter which is fixedly installed at the upper end of the strip-shaped plate, two symmetrically-arranged strip-shaped grooves are formed in the strip-shaped plate, and sliding blocks are connected into the two strip-shaped grooves in a sliding mode; the two detection rods are connected to the lower ends of the two sliding blocks through elastic abutting mechanisms, the two detection rods are electrically connected with a universal meter, and screwdrivers are fixedly installed at the lower ends of the two detection rods; according to the invention, whether adhesion occurs in the relay can be rapidly judged, the detection efficiency of the relay is greatly improved, the binding posts of the relay can be automatically cleaned, and the detection accuracy of the relay is indirectly improved.

Description

Technical Field

[0001] The present invention relates to the technical field of relay detection, and particularly relates to a relay adhesion detection system and a detection method. Background Art

[0002] A relay is an electrical control device. When the change of the input quantity reaches the specified requirement, it is an electrical appliance that makes the controlled quantity undergo a predetermined step change in the electrical output circuit. It has an interactive relationship between the control system and the controlled system. It is usually applied to an automatic control circuit. In fact, it is an "automatic switch" that uses a small current to control the operation of a large current. Therefore, it plays roles such as automatic regulation, safety protection, and circuit conversion in the circuit.

[0003] In the prior art, after the relay works for a long time, the internal opening and closing device thereof is prone to adhesion phenomenon. Then, workers need to detect it. During the detection, it often needs to be disassembled from the device, which makes the detection process more cumbersome. The disassembly and detection processes will also affect the normal operation of the device. When there are a large number of relays that need to be detected and excluded one by one, the influence will be more obvious. Summary of the Invention

[0004] The purpose of the present invention is to solve the problem in the prior art that it is not convenient to detect the adhesion of the relay, and to propose a relay adhesion detection system and a detection method.

[0005] In order to achieve the above purpose, the present invention adopts the following technical solutions:

[0006] A relay adhesion detection system includes a strip board, and also includes a multimeter fixedly installed at the upper end of the strip board. Among them, two symmetrically arranged strip grooves are provided on the strip board, and sliders are slidably connected in both of the two strip grooves; two detection rods are connected to the lower ends of the two sliders through an elastic pressing mechanism. Among them, both of the two detection rods are electrically connected to the multimeter, and drivers are fixedly installed at the lower ends of both of the two detection rods.

[0007] In order to make the driver be more tightly connected to the relay terminal, preferably, the elastic pressing mechanism includes a connecting column arranged at the lower end of the slider. A sliding hole is provided at the upper end of the connecting column. Among them, a sliding column fixedly connected to the slider is longitudinally slidably connected in the sliding hole. The sliding column is elastically connected to the inner bottom of the sliding hole through a first spring. A circular hole is provided at the lower end of the connecting column, and the detection rod is rotatably connected to the inner top of the circular hole.

[0008] In order to lock the slider in the strip groove, further, a first sliding groove is provided on the outer wall of the slider, a first sliding plate is slidably connected in the first sliding groove, and a communicating pipe extending into the first sliding groove is provided in the sliding hole.

[0009] To drive the detection rod to rotate, further, a drive motor is fixedly installed on the outer wall of the connecting column. The drive motor is connected to the detection rod through a connecting component, and the drive motor drives the detection rod to rotate through the connecting component.

[0010] To automatically tighten the screw of the relay terminal, further, the connecting component includes a plurality of second chutes provided on the outer wall of the detection rod. A second sliding plate is slidably connected in each of the plurality of second chutes. Wherein, the second sliding plate is elastically connected to the inner wall of the second chute through a second spring. One side of the second sliding plate extends into the circular hole. An annular plate is fixedly connected to the inner wall of the circular hole. The annular plate is connected to the output shaft of the drive motor through two meshing gears. A plurality of convex blocks are fixedly connected to the inner wall of the annular plate.

[0011] To blow the dust accumulated on the screw of the relay terminal, further, an air suction pipe and an exhaust pipe extending to the outer wall of the detection rod are provided in the second chute. One-way valves are fixedly installed in both the air suction pipe and the exhaust pipe. Wherein, a blowing hole is provided at the lower end of the screwdriver. The end of the exhaust pipe is communicated with the blowing hole.

[0012] To prevent the blown dust from polluting the surrounding environment, further, an installation hole is provided on the outer wall of the lower end of the detection rod. An inclined filter plate is fixedly installed in the installation hole. The end of the air suction pipe extends into the installation hole.

[0013] To facilitate the operation of the entire device, preferably, handles and push plates are respectively fixedly connected to both sides of the strip-shaped plate and the upper end of the slider.

[0014] To make the connection between the screwdriver and the relay terminal more compact, preferably, a magnet is fixedly connected inside the screwdriver.

[0015] A detection method for detecting relay adhesion, the operation steps are as follows:

[0016] Step 1: Push the two sliders to make the distance between the two detection rods the same as the distance between the terminals of the relay;

[0017] Step 2: Insert the screwdrivers on the two detection rods into the screws of the relay terminals respectively;

[0018] Step 3: Press down the strip-shaped plate to make the screwdriver at the lower end of the detection rod elastically press against the screw of the terminal;

[0019] Step 4: Start the drive motor to align the screwdriver with the screw hole of the terminal and fully tighten the screw;

[0020] Step 5: Observe the resistance value between the two terminals with a multimeter. If the resistance value is infinite, it indicates that the relay is in an open state. Conversely, the relay is in a closed state.

[0021] Compared with the prior art, the present invention provides a relay adhesion detection system, which has the following beneficial effects:

[0022] 1. In this relay adhesion detection system, by inserting the screwdrivers on the two detection rods into the terminal screws of the relay respectively, at this time, the resistance value between the two terminals can be observed through a multimeter. If the resistance value is infinite, it indicates that the relay is in an open state. If the resistance value is close to zero, it indicates that the relay is in a closed state, so as to quickly judge whether there is adhesion inside the relay, greatly improving the detection efficiency of the relay;

[0023] 2. In this relay adhesion detection system, by pressing down the strip plate, the strip plate will make the slider drive the sliding column to compress the first spring, and the first spring will make the screwdriver at the lower end of the detection rod elastically press against the terminal screw, so that the connection between the screwdriver and the terminal screw is tighter, and further making the detection result of the multimeter more accurate;

[0024] 3. In this relay adhesion detection system, by driving the motor to drive the screwdriver to rotate, on the one hand, it will make the screwdriver fit more closely with the terminal screw, and on the other hand, it will tighten the loose screw, thus effectively ensuring the connection stability between the screwdriver and the relay, and indirectly improving the accuracy of relay detection;

[0025] 4. In this relay adhesion detection system, by multiple bumps successively hitting multiple second sliding plates, the multiple second sliding plates will drive the detection rod and the screwdriver to vibrate. The vibration will loosen the dust on the screw, so that the contact between the screwdriver and the screw can be made closer, further improving the detection accuracy of the relay;

[0026] 5. In this relay adhesion detection system, by the second sliding plate compressing the air in the second chute, the air in the second chute will discharge air through the exhaust pipe to the air blowing hole, and the air blowing hole will blow out the dust on the terminal screw, so as to automatically clean the terminal of the relay and indirectly improve the accuracy of relay detection;

[0027] 6. In this relay adhesion detection system, when the second sliding plate extends out of the second chute, negative pressure will be generated in the second chute, and the mounting hole will suck away some of the dust blown out by the air blowing hole and filter it through the filter plate, so as to prevent the cleaned dust from polluting the surrounding air. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 It is a first perspective axonometric structure schematic diagram of a relay adhesion detection system proposed by the present invention;

[0029] Figure 2 The second perspective isometric structural schematic diagram of a relay adhesion detection system proposed by the present invention;

[0030] Figure 3 The partial isometric structural schematic diagram of a relay adhesion detection system proposed by the present invention;

[0031] Figure 4 For a relay adhesion detection system proposed by the present invention Figure 3 The partial structural schematic diagram therein;

[0032] Figure 5 For a relay adhesion detection system proposed by the present invention Figure 3 The front view sectional structural schematic diagram;

[0033] Figure 6 For a relay adhesion detection system proposed by the present invention Figure 5 The structural schematic diagram of part A therein;

[0034] Figure 7 The front view partial structural schematic diagram of a relay adhesion detection system proposed by the present invention.

[0035] In the figure: 1. Strip board; 2. Multimeter; 3. Detection rod; 4. Screwdriver; 5. Strip groove; 6. Slide block; 7. Push plate; 8. Handle; 9. Connecting column; 10. Slide column; 11. Slide hole; 12. First spring; 13. First chute; 14. First slide plate; 15. Connecting pipe; 16. Round hole; 17. Second chute; 18. Second slide plate; 19. Ring plate; 20. Convex block; 21. Driving motor; 22. Gear; 23. Second spring; 24. Air blowing hole; 25. Exhaust pipe; 26. Suction pipe; 27. Installation hole; 28. Filter plate; 29. Magnet; 30. Check valve; 31. Sleeve; 32. Buffer block; 33. Detection lens; 34. Elastic buffer airbag; 35. Ring pipe; 36. Air blowing nozzle; 37. Air delivery pipe; 38. Branch pipe; 39. Inner pipe; 40. Connecting pipe. Specific embodiments

[0036] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with 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 of the embodiments.

[0037] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore should not be construed as a limitation to the present invention.

[0038] Embodiment 1:

[0039] Referring to Figures 1 - 6 , a relay adhesion detection system includes a strip board 1, and also includes a multimeter 2 for detecting the resistance value, voltage and current between the relay terminals, which is fixedly installed at the upper end of the strip board 1. Among them, two symmetrically arranged strip grooves 5 are provided on the strip board 1, and sliders 6 are slidably connected in both of the two strip grooves 5; two detection rods 3 connected to the multimeter 2 are connected to the lower ends of the two sliders 6 through an elastic pressing mechanism. Among them, both of the two detection rods 3 are electrically connected to the multimeter 2, and screwdrivers 4 for screwing the relay terminal screws are fixedly installed at the lower ends of the two detection rods 3.

[0040] When it is necessary to detect the relay, there is no need to disassemble the relay. Push the two sliders 6 to make the two sliders 6 slide in the strip grooves 5, so as to change the distance between the two detection rods 3 and make the distance between the two detection rods 3 the same as the distance between the relay terminals. Then insert the screwdrivers 4 on the two detection rods 4 into the relay terminal screws respectively. At this time, the resistance value between the two terminals can be observed through the multimeter 2. If the resistance value is infinite, it means that the relay is in an open state inside. If the resistance value is close to zero, it means that the relay is in a closed state inside, and it is possible to quickly judge whether there is adhesion inside the relay, greatly improving the detection efficiency of the relay; since most relays are installed on the equipment in the factory, the harsh environment in the factory will cause the relay terminal screws to be contaminated by dust. Therefore, when inserting the screwdriver 4 into the terminal screw, press down the strip board 1, and the elastic pressing mechanism will make the connection between the screwdriver 4 and the terminal screw closer, and further make the detection result of the multimeter 2 more accurate.

[0041] Furthermore, handles 8 and push plates 7 are respectively fixedly connected to both sides of the strip board 1 and the upper ends of the sliders 6. The strip board 1 can be more conveniently taken through the handle 8, and the slider 6 can be more conveniently pushed through the push plate 7.

[0042] Furthermore, a magnet 29 is fixedly connected inside the screwdriver 4. The magnet 29 can make the screwdriver 4 adsorb on the screw of the relay terminal, so that the connection between the screwdriver 4 and the terminal is closer.

[0043] Embodiment 2:

[0044] Reference Figures 1 - 3 and Figure 5 , which is basically the same as the first embodiment. Further, the specific implementation of the elastic tightening mechanism is specifically disclosed.

[0045] The elastic tightening mechanism includes a connecting column 9 provided at the lower end of the slider 6. A sliding hole 11 is provided at the upper end of the connecting column 9. Among them, a sliding column 10 fixedly connected to the slider 6 is longitudinally slidably connected in the sliding hole 11. The sliding column 10 and the inner bottom of the sliding hole 11 are elastically connected by a first spring 12. A circular hole 16 is provided at the lower end of the connecting column 9. The detection rod 3 is rotatably connected to the inner top of the circular hole 16.

[0046] When inserting the screwdriver 4 onto the terminal screw, pressing down the strip plate 1 will cause the slider 6 to drive the sliding column 10 to compress the first spring 12. The first spring 12 will then elastically tighten the screwdriver 4 at the lower end of the detection rod 3 against the terminal screw, making the connection between the screwdriver 4 and the terminal screw closer, and further making the detection result of the multimeter 2 more accurate.

[0047] Further, a first sliding groove 13 is provided on the outer wall of the slider 6. A first sliding plate 14 is slidably connected in the first sliding groove 13. A communicating pipe 15 extending into the first sliding groove 13 is provided in the sliding hole 11. After pressing the strip plate 1, the air in the sliding hole 11 will be squeezed by the sliding column 10. Then the air in the sliding hole 11 will be transported to the first sliding groove 13 through the communicating pipe 15. The first sliding plate 14 in the first sliding groove 13 will then press against the inner wall of the strip groove 5, locking the slider 6 in the strip groove 5 and improving the stability during the detection of the relay.

[0048] Embodiment Three:

[0049] Reference Figures 1 - 6 , which is basically the same as the second embodiment. Further, the specific implementation for rotating the detection rod 3 is specifically added.

[0050] A driving motor 21 is fixedly installed on the outer wall of the connecting column 9. The driving motor 21 is connected to the detection rod 3 through a connecting component. The driving motor 21 drives the detection rod 3 to rotate through the connecting component. The connecting component includes a plurality of second sliding grooves 17 provided on the outer wall of the detection rod 3. A second sliding plate 18 is slidably connected in each of the plurality of second sliding grooves 17. Among them, the second sliding plate 18 and the inner wall of the second sliding groove 17 are elastically connected by a second spring 23. One side of the second sliding plate 18 extends into the circular hole 16. An annular plate 19 is fixedly connected to the inner wall of the circular hole 16. The annular plate 19 and the output shaft of the driving motor 21 are connected by two meshing gears 22. A plurality of convex blocks 20 are fixedly connected to the inner wall of the annular plate 19. The opposite surfaces of the convex blocks 20 and the second sliding plate 18 are both arc-shaped;

[0051] After pressing down the strip plate 1, the driving motor 21 is started. The driving motor 21 drives the annular plate 19 to rotate through two meshing gears 22. The annular plate 19 drives a plurality of bumps 20 to perform a circumferential sweep. The plurality of bumps 20 push a plurality of second sliding plates 18 to perform a circumferential sweep. The plurality of second sliding plates 18 drive the detection rod 3 to rotate. The detection rod 3 drives the screwdriver 4 to rotate. When the screwdriver 4 is aligned with the screw hole of the terminal, the screwdriver 4 is inserted onto the screw of the terminal and drives the screw to rotate. When the screw is completely tightened, the detection rod 3 cannot rotate. At this time, the thrust of the bump 20 is greater than the elastic force of the second spring 23. So the bump 20 pushes the second sliding plate 18 to slide into the second chute 17. When the bump 20 passes over the second sliding plate 18, the second sliding plate 18 extends out of the second chute 17 under the elastic force of the second spring 23. So the circumferentially sweeping bump 20 does not drive the detection rod 3 and the screwdriver 4 to rotate. On the one hand, it makes the screwdriver 4 fit more closely with the terminal screw. On the other hand, it tightens the loose screw, effectively ensuring the connection stability between the screwdriver 4 and the relay, indirectly improving the accuracy of the relay detection. And after the screw is tightened, the plurality of bumps 20 sequentially impact the plurality of second sliding plates 18. The plurality of second sliding plates 18 drive the detection rod 3 and the screwdriver 4 to vibrate. The vibration loosens the dust on the screw, so that the contact between the screwdriver 4 and the screw can be made closer, further improving the detection accuracy of the relay. When it is necessary to read the data on the multimeter 2, the driving motor 21 is turned off.

[0052] Embodiment 4:

[0053] Referring to Figures 3 - 6 , it is basically the same as Embodiment 3. Further, a specific implementation scheme for cleaning the screws of the relay terminals is specifically added.

[0054] An air suction pipe 26 and an exhaust pipe 25 extending to the outer wall of the detection rod 3 are provided in the second chute 17. One-way valves 30 are fixedly installed in both the air suction pipe 26 and the exhaust pipe 25. Among them, an air blowing hole 24 is provided at the lower end of the screwdriver 4. The end of the exhaust pipe 25 is communicated with the air blowing hole 24;

[0055] When the second sliding plate 18 slides into the second chute 17, the second sliding plate 18 compresses the air in the second chute 17. The air in the second chute 17 exits through the exhaust pipe 25 to the air blowing hole 24. The air blowing hole 24 blows the dust on the terminal screw, automatically cleaning the relay terminal and indirectly improving the accuracy of the relay detection. During this period, the vibrating screwdriver 4 enables the air blowing hole 24 to clean the relay terminal more efficiently. When the second sliding plate 18 extends out of the second chute 17, a negative pressure is generated in the second chute 17, and air is inhaled through the air suction pipe 26.

[0056] Furthermore, an installation hole 27 is provided on the outer wall of the lower end of the detection rod 3. An inclined filter plate 28 is fixedly installed in the installation hole 27. The end of the air suction pipe 26 extends into the installation hole 27. When the air suction pipe 26 sucks in air, the air suction pipe 26 will suck air from the installation hole 27, and the installation hole 27 will suck away part of the dust blown out of the air blowing hole 24 and filter it through the filter plate 28, thereby preventing the cleaned dust from polluting the surrounding air.

[0057] Embodiment Five:

[0058] Referring to Figures 5 - 7 , which is basically the same as Embodiment Four. Furthermore, a detector with a detection lens 33 is fixedly installed on the strip-shaped plate 1. The detector is an infrared thermal imager or a laser scanner. The lower end of the strip-shaped plate 1 is fixedly connected with a sleeve 31. A buffer block 32 is longitudinally slidably connected in the sleeve 31. There is damping between the buffer block 32 and the inner wall of the sleeve 31. The detection lens 33 is fixedly installed at the bottom of the buffer block 32. The buffer block 32 is elastically connected to the inner top of the sleeve 31 through an elastic buffer airbag 34;

[0059] So in actual detection, the detector on the strip-shaped plate 1 can detect whether there are cracks on the relay through the detection lens 33, so that the staff can discover problems in time. During the detection process, the detection rod 3 will vibrate and transmit the vibration to the detection lens 33. At this time, the elastic buffer airbag 34 between the buffer block 32 and the strip-shaped plate 1 can offset part of the vibration, thereby reducing the influence of the vibration on the detection lens 33 and indirectly improving the accuracy of the detection result;

[0060] Furthermore, a ring-shaped pipe 35 is fixedly installed at the lower end of the buffer block 32. A blowing nozzle 36 facing the outer wall of the detection lens 33 is fixedly installed at the lower end of the ring-shaped pipe 35. The elastic buffer airbag 34 is connected to the ring-shaped pipe 35 through an air delivery pipe 37. A branch pipe 38 communicating with the air blowing hole 24 is provided at the top of the detection rod 3. An inner pipe 39 is provided on the outer wall of the connecting column 9. The input end of the inner pipe 39 is aligned with the upper end of the branch pipe 38. The inner pipe 39 is connected to the elastic buffer airbag 34 through a connecting pipe 40;

[0061] When the exhaust pipe 25 exhausts intermittently, part of the air discharged into the air blowing hole 24 will be transported to the inner pipe 39 through the branch pipe 38, then transported to the elastic buffer airbag 34 through the connecting pipe 40, and finally transported to the ring-shaped pipe 35 through the air delivery pipe 37, and finally blown onto the outer wall of the detection lens 33 from the blowing nozzle 36, thereby blowing off the dust on the outer wall of the detection lens 33 to ensure the accuracy of the detection lens 33 when detecting cracks. On the other hand, when the fluctuating air flow passes through the elastic buffer airbag 34, the fluctuating air flow can offset the vibration given by the detection rod 3 to the detection lens 33, thereby improving the damping effect of the detection lens 33 and making the detection result more accurate.

[0062] A detection method for detecting relay adhesion, the operation steps are as follows:

[0063] Step 1: Push two sliders 6 so that the distance between the two detection rods 3 is the same as the distance between the terminal posts of the relay;

[0064] Step 2: Insert the screwdrivers 4 on the two detection rods 3 into the terminal post screws of the relay respectively;

[0065] Step 3: Press down the strip plate 1 so that the screwdriver 4 at the lower end of the detection rod 3 elastically abuts against the terminal post screw;

[0066] Step 4: Start the drive motor 21 to align the screwdriver 4 with the terminal post screw hole and fully tighten the screw;

[0067] Step 5: Observe the resistance value between the two terminal posts through the multimeter 2. If the resistance value is infinite, it means that the relay is in an open state. Otherwise, the relay is in a closed state.

[0068] In this relay adhesion detection system, when it is necessary to detect the relay, there is no need to disassemble the relay. Push the two sliders 6 to make the two sliders 6 slide in the strip groove 5, thereby changing the distance between the two detection rods 3 so that the distance between the two detection rods 3 is the same as the distance between the terminal posts of the relay. Then insert the screwdrivers 4 on the two detection rods 3 into the terminal post screws of the relay respectively. At this time, the resistance value between the two terminal posts can be observed through the multimeter 2. If the resistance value is infinite, it means that the relay is in an open state. If the resistance value is close to zero, it means that the relay is in a closed state, and it can quickly judge whether there is adhesion inside the relay, greatly improving the detection efficiency of the relay;

[0069] Since most relays are installed on the equipment in the factory, the harsh environment in the factory will cause the terminal post screws of the relay to be contaminated by dust. So when inserting the screwdriver 4 into the terminal post screw, press down the strip plate 1. The strip plate 1 will make the slider 6 drive the sliding column 10 to compress the first spring 12, and the first spring 12 will make the screwdriver 4 at the lower end of the detection rod 3 elastically abut against the terminal post screw, so that the screwdriver 4 and the terminal post screw are closer, and further make the detection result of the multimeter 2 more accurate;

[0070] After pressing down the strip plate 1, the driving motor 21 is started. The driving motor 21 drives the annular plate 19 to rotate through two meshing gears 22. The annular plate 19 drives multiple bumps 20 to perform a circumferential sweep. The multiple bumps 20 push multiple second sliding plates 18 to perform a circumferential sweep. The multiple second sliding plates 18 drive the detection rod 3 to rotate. The detection rod 3 drives the screwdriver 4 to rotate. When the screwdriver 4 is aligned with the screw hole of the terminal, the screwdriver 4 is inserted onto the screw of the terminal and drives the screw to rotate. When the screw is completely tightened, the detection rod 3 cannot rotate. At this time, the thrust of the bump 20 is greater than the elastic force of the second spring 23. So the bump 20 pushes the second sliding plate 18 to slide into the second chute 17. When the bump 20 passes over the second sliding plate 18, the second sliding plate 18 extends out of the second chute 17 under the elastic force of the second spring 23. So the circumferentially sweeping bump 20 does not drive the detection rod 3 and the screwdriver 4 to rotate. On the one hand, it makes the screwdriver 4 fit better with the terminal screw. On the other hand, it tightens the loose screw, effectively ensuring the connection stability between the screwdriver 4 and the relay, indirectly improving the accuracy of relay detection. And after the screw is tightened, the multiple bumps 20 successively impact the multiple second sliding plates 18. The multiple second sliding plates 18 drive the detection rod 3 and the screwdriver 4 to vibrate. The vibration loosens the dust on the screw, making the contact between the screwdriver 4 and the screw closer and further improving the detection accuracy of the relay;

[0071] When the second sliding plate 18 slides into the second chute 17, the second sliding plate 18 compresses the air in the second chute 17. The air in the second chute 17 exits through the exhaust pipe 25 to the air blowing hole 24. The air blowing hole 24 blows the dust on the terminal screw, automatically cleaning the terminal of the relay and indirectly improving the accuracy of relay detection. During this period, the vibrating screwdriver 4 enables the air blowing hole 24 to clean the relay terminal more efficiently. When the second sliding plate 18 extends out of the second chute 17, a negative pressure is generated in the second chute 17, and air is inhaled through the suction pipe 26. The suction pipe 26 sucks air from the mounting hole 27. The mounting hole 27 sucks away some of the dust blown out by the air blowing hole 24 and filters it through the filter plate 28, preventing the cleaned dust from polluting the surrounding air.

[0072] The above is only a preferred specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art within the technical scope disclosed by the present invention, according to the technical solution and inventive concept of the present invention, makes equivalent substitutions or changes, and should be covered by the protection scope of the present invention.

Claims

1. A relay adhesion detection system, comprising a strip plate (1), characterized in that: Also includes: A multimeter (2) is fixedly mounted on the upper end of the strip plate (1). Wherein, the strip plate (1) is provided with two symmetrically arranged strip grooves (5), and sliding blocks (6) are slidably connected in the two strip grooves (5); The two detection rods (3) are connected to the lower ends of the two slide blocks (6) via an elastic tightening mechanism. The two detection rods (3) are both electrically connected to the multimeter (2), and a screwdriver (4) is fixedly mounted on the lower ends of the two detection rods (3).

2. A relay adhesion detection system according to claim 1, characterized in that: The elastic pressing mechanism comprises: A connecting column (9) is arranged at the lower end of the sliding block (6), and a sliding hole (11) is provided at the upper end of the connecting column (9). A sliding column (10) fixedly connected to the sliding block (6) is longitudinally slidably connected in the sliding hole (11); the sliding column (10) is elastically connected to the inner bottom of the sliding hole (11) via a first spring (12); a circular hole (16) is provided at the lower end of the connecting column (9); and the detection rod (3) is rotatably connected to the inner top of the circular hole (16).

3. A relay adhesion detection system according to claim 2, characterized in that: The outer wall of the sliding block (6) is provided with a first sliding groove (13), a first sliding plate (14) is slidably connected in the first sliding groove (13), and a connecting pipe (15) extending into the first sliding groove (13) is provided in the sliding hole (11).

4. A relay adhesion detection system according to claim 2, characterized in that: A driving motor (21) is fixedly mounted on the outer wall of the connecting column (9); the driving motor (21) is connected to the detection rod (3) via a connecting assembly; and the driving motor (21) drives the detection rod (3) to rotate via the connecting assembly.

5. A relay adhesion detection system according to claim 4, characterized in that: The connection component comprises: A plurality of second sliding grooves (17) are provided on the outer wall of the detection rod (3), and a second sliding plate (18) is slidably connected in each of the plurality of second sliding grooves (17). The second slide plate (18) is elastically connected to the inner wall of the second slide groove (17) via a second spring (23); one side of the second slide plate (18) extends into the circular hole (16); an annular plate (19) is fixedly connected to the inner wall of the circular hole (16); the annular plate (19) is connected to the output shaft of the drive motor (21) via two mutually meshing gears (22); and a plurality of protrusions (20) are fixedly connected to the inner wall of the annular plate (19).

6. A relay adhesion detection system according to claim 5, characterized in that: An air intake pipe (26) and an air discharge pipe (25) extending to the outer wall of the detection rod (3) are provided in the second slide groove (17), and a one-way valve (30) is fixedly installed in each of the air intake pipe (26) and the air discharge pipe (25). The lower end of the screwdriver (4) is provided with an air blowing hole (24), and the end of the exhaust pipe (25) is connected to the air blowing hole (24).

7. A relay adhesion detection system according to claim 6, characterized in that: The outer wall of the lower end of the detection rod (3) is provided with a mounting hole (27), and an inclined filter plate (28) is fixedly mounted in the mounting hole (27), and the end of the air intake pipe (26) extends into the mounting hole (27).

8. A relay adhesion detection system according to claim 1, characterized in that: The two sides of the strip plate (1) and the upper end of the sliding block (6) are respectively fixedly connected with a handle (8) and a push plate (7).

9. A relay adhesion detection system according to claim 1, characterized in that: A magnet (29) is fixedly connected inside the screwdriver (4).

10. A detection method for detecting relay adhesion, using a relay adhesion detection system according to any one of claims 1 to 9, characterized in that: The steps are as follows: Step 1: Push the two sliders (6) to make the distance between the two detection rods (3) the same as the distance between the terminals of the relay; Step 2: Insert the screwdrivers (4) on the two detection rods (3) into the terminal screws of the relay respectively; Step 3: Press the strip plate (1) downward so that the screwdriver (4) at the lower end of the detection rod (3) elastically presses against the terminal screw; Step 4: Start the drive motor (21), align the screwdriver (4) with the terminal screw hole, and fully tighten the screw; Step 5: Use a multimeter (2) to observe the resistance between the two terminals. If the resistance is infinite, it means the relay is in an open state. Otherwise, the relay is in a closed state.

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