Relay testing device

Abstract

The invention discloses a relay testing device, which relates to the technical field of relay testing and comprises a shell, a plurality of positioning holes are formed in the top of the shell, a plurality of relays are inserted into the positioning holes, an arc-shaped shell is fixedly connected to the position, close to the relays, of the upper surface of the shell, and a positioning groove is formed in the upper surface of the arc-shaped shell. Two fixed rails are fixedly connected to the inner wall of the bottom of the shell, and a first moving plate is slidably connected to the tops of the fixed rails. According to the relay testing device disclosed by the invention, a circuit between a front contact strip and a rear contact strip is connected by detecting a resistance value between a seventh power connection frame and two first connecting wires at the bottom, and an indicator lamp at one end of a relay is lightened because a short wire and two ends of a fourth branch of a fourth wire network have voltages, so that the relay is switched on. Whether the internal hardware and the working state of the relay are normal or not is tested at the same time, so that the time for detecting the relay is saved, and the effect of improving the relay detection efficiency is achieved.

Description

Technical Field

[0001] The present invention relates to the technical field of relay testing, and particularly to a relay testing device. Background Art

[0002] ‌The basic principle of a multimeter‌ is to measure voltage, current, and resistance through electromagnetic induction and Ohm's law. Whether it is an analog multimeter or a digital multimeter, their core working principles are similar. When measuring voltage, a high-resistance resistor is built inside the multimeter in parallel with the circuit under test. When measuring current, a small-resistance resistor is connected in series, and the current value is calculated using Ohm's law. When measuring resistance, the multimeter provides a stable current source, passes through the resistor under test, measures the voltage across the resistor, and then calculates the resistance value according to Ohm's law.

[0003] The working principle of a relay is mainly based on electromagnetic induction. When the relay coil is energized, an electromagnetic field is generated, attracting the iron core and closing the iron core and the contacts, thereby realizing the on-off control of the circuit. Generally, when using a relay testing device, only one relay can be detected by a multimeter at a time, which increases the detection time and reduces the efficiency of relay detection. At the same time, manual operation may lead to detection errors, resulting in inaccurate detection results and unable to meet the actual needs. Summary of the Invention

[0004] The present invention discloses a relay testing device, aiming to solve the technical problems that when using a general relay testing device, only one relay can be detected by a multimeter at a time, which increases the detection time, reduces the efficiency of relay detection, and at the same time, manual operation may lead to detection errors, resulting in inaccurate detection results.

[0005] In order to achieve the above object, the present invention adopts the following technical solutions: A relay testing device includes a housing. A plurality of positioning holes are provided at the top of the housing, and a plurality of relays are inserted into the positioning holes. An arc-shaped housing is fixedly connected to the upper surface of the housing near the relays. A positioning groove is provided on the upper surface of the arc-shaped housing. Two fixed rails are fixedly connected to the bottom inner wall of the housing. A first moving plate is slidably connected to the top of the fixed rails. A second moving plate is fixedly connected to one side of the first moving plate. An adjusting rod is fixedly connected to the top of the first moving plate. A plurality of seventh power connection brackets and eighth power connection brackets are respectively fixedly connected to the top surface of the first moving plate. A plurality of fifth power connection brackets and sixth power connection brackets are respectively fixedly connected to the top surface of the first moving plate near the seventh power connection brackets. A plurality of first power connection brackets and second power connection brackets are respectively fixedly connected to the top surface of the second moving plate. A plurality of third power connection brackets and fourth power connection brackets are respectively fixedly connected to the top surface of the second moving plate near the second power connection brackets; The inner wall of the relay is provided with a relay mechanism, and the relay mechanism is used to realize the control of low-voltage electricity over high-voltage electricity; Both sides of the first moving plate are provided with a first circuit mechanism, and the first circuit mechanism is used to control the fifth power connection frame, the sixth power connection frame, the seventh power connection frame and the eighth power connection frame; Both sides of the second moving plate are provided with a second circuit mechanism, and the second circuit mechanism is used to control the first power connection frame, the second power connection frame, the third power connection frame and the fourth power connection frame; One end of the outer shell is provided with a detection mechanism, and the detection mechanism is used for initial detection; The other end of the outer shell is provided with an adjustment mechanism, and the adjustment mechanism is used for the second re-inspection.

[0006] The relay mechanism includes a first contact plate fixedly connected to the bottom of one end of the relay. At a position close to the first contact plate on the bottom of the relay, a second contact plate is fixedly connected. At the bottom of the other end of the relay, a third contact plate is fixedly connected. At a position close to the third contact plate on the bottom of the relay, a fourth contact plate is fixedly connected. A copper wire is fixedly connected to the inner wall of the bottom of the relay. At a position close to one end of the copper wire on the inner wall of the bottom of the relay, a front contact strip and a rear contact strip are respectively fixedly connected. A magnet is fixedly connected to one side of the front contact strip. The first contact plate is electrically connected to the front contact strip, the rear contact strip is electrically connected to the second contact plate, and the third contact plate and the fourth contact plate are respectively electrically connected to both ends of the copper wire.

[0007] In a preferred solution, the first circuit mechanism includes a second wire network arranged on one side of the first moving plate. A plurality of first branches are arranged on the second wire network. On the other side of the first moving plate, a first wire network is arranged. A plurality of second branches are arranged on the first wire network. The bottom of the second wire network is electrically connected to a first power supply line. The bottom of the first wire network is electrically connected to a second power supply line. A fixing plate is fixedly connected to the bottom of the outer shell. An upper conductive strip and a lower conductive strip are arranged on one side of the fixing plate. One side of the lower conductive strip is electrically connected to a first connecting wire. One side of the upper conductive strip is electrically connected to a second connecting wire. The seventh power connection frame and the eighth power connection frame are respectively electrically connected to the second connecting wire. Insulation is provided between the lower conductive strip and the upper conductive strip.

[0008] The bottom end of the first power supply line is electrically connected to a power supply, and the bottom end of the second power supply line is electrically connected to the power supply. The first branch is electrically connected to the sixth power connection frame, and the second branch is electrically connected to the fifth power connection frame. The power supply outputs a 12-volt voltage through the first power supply line and the second power supply line.

[0009] The second circuit mechanism includes a third wire mesh disposed on one side of the second moving plate. A plurality of third branches are provided on the third wire mesh. On the other side of the second moving plate, a fourth wire mesh is provided. A plurality of fourth branches are provided on the fourth wire mesh. The bottom of the third wire mesh is electrically connected to the second power supply line. The bottom of the fourth wire mesh is electrically connected to the first power supply line. On the other side of the second moving plate, a plurality of short wires are provided. The short wires are electrically connected to the second lamp wire.

[0010] The fourth branch is electrically connected to the first lamp wire. One end of the first lamp wire is electrically connected to an indicator light. The short wire is electrically connected to the third power connection bracket. The third wire mesh is electrically connected to the fourth power connection bracket. The other end of the first connection wire is electrically connected to the first power connection bracket and the second power connection bracket respectively.

[0011] The detection mechanism includes two conductive grooves fixedly connected to the inner wall of one side of the housing. A conductive cylinder is slidably connected inside the conductive groove. One side of the conductive cylinder is electrically connected to a movable wire. A mounting bracket is fixedly connected to one side of the conductive cylinder near the movable wire. A rotating bracket is rotatably connected to one side of the mounting bracket. An operating rod is slidably connected to the top of the rotating bracket. One end of the operating rod is sleeved with an operating spring. Two power connection plates are fixedly connected to the bottom end of the operating rod. A sliding groove is provided on one side of the power connection plate. The sliding groove is in close fit with the side surfaces of the upper conductive strip and the lower conductive strip. A movement groove is provided on the upper surface of the housing. A plurality of stopping grooves are provided on one side edge of the movement groove.

[0012] The other side of the conductive cylinder is electrically connected to a first wire and a second wire respectively. The first wire and the second wire respectively penetrate through the outer wall of the housing. A slide rail is fixedly connected to the outer wall of one side of the housing near the first wire. A sliding block is slidably connected to one side of the slide rail. A push rod is fixedly connected to one side of the sliding block. Two guide rods are provided inside the sliding block. A first fixing block is fixedly connected to the outer wall of one side of the housing near the sliding block.

[0013] A second fixing block is fixedly connected to one end position of the housing near the slide rail. Bottom plates are fixedly connected to both ends of the housing. A fixing rod is fixedly connected to the upper surface of the bottom plate. A placement plate is rotatably connected to one side of the fixing rod. A main multimeter and an auxiliary multimeter are respectively provided on the upper surface of the placement plate. Positive wires and negative wires are respectively provided at the bottoms of the main multimeter and the auxiliary multimeter.

[0014] In a preferred solution, the adjustment mechanism includes a limiting rod slidably connected to one side of the bottom end of the fixing rod. One end of the limiting rod is sleeved with a limiting spring. A stopping plate is fixedly connected to one side edge of the placement plate. A plurality of limiting holes are provided on one side of the stopping plate.

[0015] As can be seen from the above, a relay testing device provided by the present invention has the following technical effects.

[0016] First: The third contact plate and the fourth contact plate respectively stay on the sixth power connection frame and the seventh power connection frame, so that the first contact plate and the second contact plate respectively stay on the first power connection frame and the second power connection frame. By detecting the resistance value between the seventh power connection frame and the two first connection wires at the bottom, the lower conductive bar connects the front contact bar and the rear contact bar in parallel with the copper wire through the first contact plate and the second contact plate, making the circuit between the front contact bar and the rear contact bar connected. Since there is voltage at both ends of the short wire and the fourth branch of the fourth wire network, the indicator light at one end of the relay is lit. By simultaneously testing whether the internal hardware of the relay is normal and whether the working state is normal, the time for detecting the relay is saved, achieving the effect of improving the efficiency of detecting the relay.

[0017] Second: The power connection plate on one side of the rotating frame contacts the upper conductive bar, so that the main multimeter is connected to the circuit between the upper conductive bar through the movable wire, the conductive cylinder and the power connection plate. By pressing the operating rod, the operating rod squeezes the operating spring, and the operating rod drives the power connection plate to slide downward. The power connection plate contacts the lower conductive bar at the bottom, achieving the effect of connecting the lower conductive bar and the upper conductive bar. The rotating frame and the mounting frame slide on one side of the conductive groove to change the position of the power connection plate. By making the operating rod stuck inside multiple stop grooves on the edge of one side of the movement groove, the power connection plate contacts multiple upper conductive bars respectively, achieving the effect of quickly detecting multiple relays and increasing the number of relays detected at one time.

[0018] Third: When the tester observes the main multimeter and the auxiliary multimeter, by rotating the placement plate, the stop plate squeezes one end of the limit rod. By squeezing the limit spring, one end of the limit rod is stuck inside different limit holes on the stop plate, making the inclination angles of the main multimeter and the auxiliary multimeter different, which is convenient for the tester to observe, achieving the effect of changing the inclination angles of the main multimeter and the auxiliary multimeter. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] Figure 1 Isometric structural schematic diagram of a relay testing device proposed by the present invention.

[0020] Figure 2 Partial cross-sectional structural schematic diagram of a relay testing device proposed by the present invention.

[0021] Figure 3 Another perspective isometric structural schematic diagram of a relay testing device proposed by the present invention.

[0022] Figure 4 Copper wire partial structural schematic diagram of a relay testing device proposed by the present invention.

[0023] Figure 5Schematic diagram of the second wire network structure of a relay testing device proposed by the present invention.

[0024] Figure 6 Schematic diagram of the fourth wire network structure of a relay testing device proposed by the present invention.

[0025] Figure 7 Schematic diagram of the limit rod structure of a relay testing device proposed by the present invention.

[0026] Figure 8 Schematic diagram of the first power connection frame structure of a relay testing device proposed by the present invention.

[0027] Figure 9 Schematic diagram of the sixth power connection frame structure of a relay testing device proposed by the present invention.

[0028] In the figure: 1. Outer shell; 2. First fixing block; 3. Sliding block; 4. Push rod; 5. Slide rail; 6. Second fixing block; 7. Auxiliary multimeter; 8. Relay; 9. Adjusting rod; 10. Arc-shaped shell; 11. Main multimeter; 12. First wire; 13. Second wire; 14. First moving plate; 15. Rotating frame; 16. Conductive groove; 17. Fixing plate; 18. Indicator light; 19. Movable wire; 20. Conductive cylinder; 21. Mounting frame; 22. Lower conductive strip; 23. First connecting wire; 24. Second connecting wire; 25. Upper conductive strip; 26. First contact plate; 27. Second contact plate; 28. Front contact strip; 29. Rear contact strip; 30. Magnet; 31. Copper wire; 32. Third contact plate; 33. Fourth contact plate; 34. Operating rod; 35. Operating spring; 36. Power connection plate; 37. Fixed rail; 38. Power supply; 39. First wire network; 40. Second wire network; 41. Third wire network; 42. Short wire; 43. Second moving plate; 44. First power wire; 45. Second power wire; 46. Fourth wire network; 47. First lamp wire; 48. Second lamp wire; 49. Placing plate; 50. Bottom plate; 51. Limit rod; 52. Stopping plate; 53. First power connection frame; 54. Second power connection frame; 55. Third power connection frame; 56. Fourth power connection frame; 57. Fifth power connection frame; 58. Sixth power connection frame; 59. Seventh power connection frame; 60. Eighth power connection frame. Detailed implementation manners

[0029] 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 the embodiments.

[0030] A relay test device disclosed by the present invention is mainly applied to the situation that when a general relay test device is in use, only one relay can be detected by a multimeter at a time, which increases the detection time and reduces the efficiency of relay detection. At the same time, manual operation may lead to detection errors and inaccurate detection results.

[0031] Referring to Figure 1 — Figure 9 , a relay test device includes a housing 1. A plurality of positioning holes are provided at the top of the housing 1, and a plurality of relays 8 are inserted into the positioning holes. An arc-shaped housing 10 is fixedly connected to the upper surface of the housing 1 near the relay 8. A positioning groove is provided on the upper surface of the arc-shaped housing 10. Two fixed rails 37 are fixedly connected to the bottom inner wall of the housing 1. A first moving plate 14 is slidably connected to the top of the fixed rail 37. A second moving plate 43 is fixedly connected to one side of the first moving plate 14. An adjusting rod 9 is fixedly connected to the top of the first moving plate 14. A plurality of seventh power connection frames 59 and eighth power connection frames 60 are fixedly connected to the top surface of the first moving plate 14 respectively. A plurality of fifth power connection frames 57 and sixth power connection frames 58 are fixedly connected to the top surface of the first moving plate 14 near the seventh power connection frame 59 respectively. A plurality of first power connection frames 53 and second power connection frames 54 are fixedly connected to the top surface of the second moving plate 43 respectively. A plurality of third power connection frames 55 and fourth power connection frames 56 are fixedly connected to the top surface of the second moving plate 43 near the second power connection frame 54 respectively; A relay mechanism is provided inside the relay 8, and the relay mechanism is used to realize weak current control of strong current; First circuit mechanisms are provided on both sides of the first moving plate 14, and the first circuit mechanisms are used to control the fifth power connection frame 57, the sixth power connection frame 58, the seventh power connection frame 59 and the eighth power connection frame 60; Second circuit mechanisms are provided on both sides of the second moving plate 43, and the second circuit mechanisms are used to control the first power connection frame 53, the second power connection frame 54, the third power connection frame 55 and the fourth power connection frame 56; A detection mechanism is provided at one end of the housing 1, and the detection mechanism is used for initial detection; An adjustment mechanism is provided at the other end of the housing 1, and the adjustment mechanism is used for second re-inspection.

[0032] The relay mechanism includes a first contact plate 26 fixedly connected to the bottom of one end of the relay 8, a second contact plate 27 fixedly connected to the bottom of the relay 8 near the first contact plate 26, a third contact plate 32 fixedly connected to the bottom of the other end of the relay 8, a fourth contact plate 33 fixedly connected to the bottom of the relay 8 near the third contact plate 32, a copper wire 31 fixedly connected to the inner bottom wall of the relay 8, a front contact strip 28 and a rear contact strip 29 fixedly connected to one end of the inner bottom wall of the relay 8 near the copper wire 31, a magnet 30 fixedly connected to one side of the front contact strip 28, the first contact plate 26 is electrically connected to the front contact strip 28, the rear contact strip 29 is electrically connected to the second contact plate 27, and the third contact plate 32 and the fourth contact plate 33 are respectively electrically connected to both ends of the copper wire 31.

[0033] The first circuit mechanism includes a second wire network 40 disposed on one side of the first moving plate 14. The second wire network 40 is provided with a plurality of first branches. A first wire network 39 is disposed on the other side of the first moving plate 14. The first wire network 39 is provided with a plurality of second branches. The bottom of the second wire network 40 is electrically connected to the first power line 44, the bottom of the first wire network 39 is electrically connected to the second power line 45, a fixing plate 17 is fixedly connected to the bottom of the housing 1, an upper conductive strip 25 and a lower conductive strip 22 are disposed on one side of the fixing plate 17, a first connecting wire 23 is electrically connected to one side of the lower conductive strip 22, a second connecting wire 24 is electrically connected to one side of the upper conductive strip 25, a seventh power connection frame 59 and an eighth power connection frame 60 are respectively electrically connected to the second connecting wire 24, and insulation is provided between the lower conductive strip 22 and the upper conductive strip 25.

[0034] The bottom end of the first power line 44 is electrically connected to the power supply 38, the bottom end of the second power line 45 is electrically connected to the power supply 38, the first branches are electrically connected to the sixth power connection frame 58, the second branches are electrically connected to the fifth power connection frame 57, and the power supply 38 outputs a twelve-volt voltage through the first power line 44 and the second power line 45.

[0035] The second circuit mechanism includes a third wire network 41 disposed on one side of the second moving plate 43. The third wire network 41 is provided with a plurality of third branches. A fourth wire network 46 is disposed on the other side of the second moving plate 43. The fourth wire network 46 is provided with a plurality of fourth branches. The bottom of the third wire network 41 is electrically connected to the second power line 45, the bottom of the fourth wire network 46 is electrically connected to the first power line 44, a plurality of short wires 42 are disposed on the other side of the second moving plate 43, and the short wires 42 are electrically connected to the second lamp wire 48.

[0036] The fourth branches are electrically connected to the first lamp wire 47. One end of the first lamp wire 47 is electrically connected to an indicator lamp 18. The short wires 42 are electrically connected to the third power connection frame 55. The third wire network 41 is electrically connected to the fourth power connection frame 56. The other end of the first connecting wire 23 is respectively electrically connected to the first power connection frame 53 and the second power connection frame 54.

[0037] In this embodiment, a plurality of relays 8 are respectively inserted into a plurality of positioning holes on the upper surface of the housing 1, so that the third contact plate 32 and the fourth contact plate 33 respectively stay on the eighth power connection frame 60 and the seventh power connection frame 59, and the first contact plate 26 and the second contact plate 27 respectively stay on the first power connection frame 53 and the second power connection frame 54. By detecting the resistance value between two first connection wires 23 at the bottoms of the seventh power connection frame 59 and the eighth power connection frame 60, it can be detected whether the resistance value of the copper wire 31 is within a reasonable range, so as to judge whether the copper wire 31 inside the relay 8 is normal. By electrically connecting two upper conductive bars 25 and two lower conductive bars 22 respectively, the lower conductive bar 22 makes the front contact bar 28 and the rear contact bar 29 be in parallel with the copper wire 31 through the first contact plate 26 and the second contact plate 27. Since the front contact bar 28 and the rear contact bar 29 inside a normal relay 8 are disconnected, if the resistance value remains unchanged, it indicates that the front contact bar 28 and the rear contact bar 29 inside the relay 8 are normal, achieving the effect of detecting the internal hardware of the relay 8.

[0038] Among them, a twelve-volt voltage is applied to the first power wire 44 and the second power wire 45 through the power supply 38. By means of the sliding adjustment rod 9, the adjustment rod 9 slides inside the positioning groove on the arc-shaped housing 10, driving the first moving plate 14 and the second moving plate 43 to slide, so that the first wire mesh 39, the second wire mesh 40, the third wire mesh 41, the short wire 42 and the fourth wire mesh 46 are respectively connected to the fifth power connection frame 57, the sixth power connection frame 58, the third power connection frame 55 and the fourth power connection frame 56. The fourth branches of the short wire 42 and the fourth wire mesh 46 are respectively electrically connected to the indicator lamp 18. Electric current is applied to both ends of the copper wire 31, and a magnetic field is generated inside the copper wire 31. The direction of the magnetic field is opposite to the magnetic field direction of the magnet 30, causing the magnet 30 to deflect outward, driving the front contact bar 28 to deflect, and making the front contact bar 28 and the rear contact bar 29 come into contact.

[0039] What needs to be further explained is that, thereby making the circuit between the front contact bar 28 and the rear contact bar 29 be connected. Since there is a voltage at both ends of the fourth branch of the short wire 42 and the fourth wire mesh 46, if the front contact bar 28, the rear contact bar 29 and the copper wire 31 inside the relay 8 work normally, the indicator lamp 18 at one end of the relay 8 is lit, achieving the effect of making it easier for the tester to observe the test result. By simultaneously testing whether the internal hardware of the relay 8 is normal and whether the working state is normal, the time for detecting the relay 8 is saved, achieving the effect of improving the detection efficiency of the relay 8.

[0040] Refer to Figure 1 、 Figure 2 、 Figure 3 and Figure 4, in a preferred embodiment, the detection mechanism includes two conductive grooves 16 fixedly connected to the inner wall of one side of the housing 1. A conductive cylinder 20 is slidably connected inside the conductive groove 16. One side of the conductive cylinder 20 is electrically connected to a movable wire 19. A mounting bracket 21 is fixedly connected to the position of one side of the conductive cylinder 20 close to the movable wire 19. A rotating bracket 15 is rotatably connected to one side of the mounting bracket 21. An operating rod 34 is slidably connected to the top of the rotating bracket 15. One end of the operating rod 34 is sleeved with an operating spring 35. Two contact plates 36 are fixedly connected to the bottom end of the operating rod 34. A chute is provided on one side of the contact plate 36, and the chute is in close contact with the side surfaces of the upper conductive strip 25 and the lower conductive strip 22. A movement groove is provided on the upper surface of the housing 1, and a plurality of stop grooves are provided on one side edge of the movement groove.

[0041] The other sides of the conductive cylinders 20 are respectively electrically connected to a first wire 12 and a second wire 13. The first wire 12 and the second wire 13 respectively penetrate through the outer wall of the housing 1. A slide rail 5 is fixedly connected to the position of the outer wall of one side of the housing 1 close to the first wire 12. A slider 3 is slidably connected to one side of the slide rail 5. A push rod 4 is fixedly connected to one side of the slider 3. Two guide rods are provided inside the slider 3. A first fixing block 2 is fixedly connected to the position of the outer wall of one side of the housing 1 close to the slider 3.

[0042] A second fixing block 6 is fixedly connected to the position of one end of the housing 1 close to the slide rail 5. Bottom plates 50 are respectively fixedly connected to both ends of the housing 1. A fixing rod is fixedly connected to the upper surface of the bottom plate 50. A placing plate 49 is rotatably connected to one side of the fixing rod. A main multimeter 11 and an auxiliary multimeter 7 are respectively provided on the upper surface of the placing plate 49. Positive wires and negative wires are respectively provided at the bottoms of the main multimeter 11 and the auxiliary multimeter 7.

[0043] In this embodiment, by rotating the rotating bracket 15, the contact plate 36 on one side of the rotating bracket 15 contacts the upper conductive strip 25, so that the circuit between the main multimeter 11 and the upper conductive strip 25 is connected through the movable wire 19, the conductive cylinder 20 and the contact plate 36. By pressing the operating rod 34, the operating rod 34 squeezes the operating spring 35, and the operating rod 34 drives the contact plate 36 to slide downward, and the contact plate 36 contacts the lower conductive strip 22 at the bottom, achieving the effect of connecting the lower conductive strip 22 and the upper conductive strip 25, and enabling the rotating bracket 15 and the mounting bracket 21 to slide on one side of the conductive groove 16 to change the position of the contact plate 36. By making the operating rod 34 stuck inside the plurality of stop grooves on one side edge of the movement groove, the contact plate 36 contacts the plurality of upper conductive strips 25 respectively, achieving the effect of quickly detecting a plurality of relays 8 and increasing the number of relays 8 detected at one time.

[0044] Further, the first detection relay 8 is detected by the main multimeter 11. If an abnormality occurs, the slider 3 can be slid by the push rod 4 to separate the slider 3 from the first fixed block 2 and make the slider 3 contact the second fixed block 6, so that the positive wire and the negative wire at the bottom of the auxiliary multimeter 7 are connected to the first wire 12 and the second wire 13. Then, the auxiliary multimeter 7 is used to detect again. If the same phenomenon often occurs, the fault cause of the main multimeter 11 can be excluded, which improves the accuracy of detecting the relay 8.

[0045] Referring to Figure 1 , Figure 2 , Figure 3 and Figure 7 , in a preferred embodiment, the adjusting mechanism includes a limiting rod 51 slidably connected to one side of the bottom end of the fixed rod. One end of the limiting rod 51 is sleeved with a limiting spring. One side edge of the placing plate 49 is fixedly connected with a stop plate 52, and a plurality of limiting holes are arranged on one side of the stop plate 52.

[0046] In this embodiment, when the tester observes the main multimeter 11 and the auxiliary multimeter 7, the placing plate 49 is rotated to press one end of the limiting rod 51. By pressing the limiting spring, one end of the limiting rod 51 is clamped inside different limiting holes on the stop plate 52, so that the tilting angles of the main multimeter 11 and the auxiliary multimeter 7 are different, which is convenient for the tester to observe and achieves the effect of changing the tilting angles of the main multimeter 11 and the auxiliary multimeter 7. Working principle: When in use, insert multiple relays 8 into multiple positioning holes on the upper surface of the housing 1 respectively, so that the third contact plate 32 and the fourth contact plate 33 stay on the eighth power connection frame 60 and the seventh power connection frame 59 respectively, and the first contact plate 26 and the second contact plate 27 stay on the first power connection frame 53 and the second power connection frame 54 respectively. By detecting the resistance value between the two first connecting wires 23 at the bottom of the seventh power connection frame 59 and the eighth power connection frame 60, it can be detected whether the resistance value of the copper wire 31 is within a reasonable range, so as to judge whether the copper wire 31 inside the relay 8 is normal. By electrically connecting two upper conductive bars 25 and two lower conductive bars 22 respectively, the lower conductive bar 22 makes the front contact bar 28 and the rear contact bar 29 in parallel with the copper wire 31 through the first contact plate 26 and the second contact plate 27. Since the front contact bar 28 and the rear contact bar 29 inside a normal relay 8 are disconnected, if the resistance value remains unchanged, it indicates that the front contact bar 28 and the rear contact bar 29 inside the relay 8 are normal, achieving the effect of detecting the internal hardware of the relay 8. Connect a 12-volt voltage to the first power wire 44 and the second power wire 45 through the power supply 38. By sliding the adjusting rod 9, the adjusting rod 9 slides inside the positioning groove on the arc-shaped housing 10, driving the first moving plate 14 and the second moving plate 43 to slide, so that the first wire mesh 39, the second wire mesh 40, the third wire mesh 41, the short wire 42 and the fourth wire mesh 46 are respectively connected to the fifth power connection frame 57, the sixth power connection frame 58, the third power connection frame 55 and the fourth power connection frame 56. The fourth branches of the short wire 42 and the fourth wire mesh 46 are respectively electrically connected to the indicator light 18. Apply power to both ends of the copper wire 31, and a magnetic field is generated inside the copper wire 31. The direction of the magnetic field is opposite to the magnetic field direction of the magnet 30, causing the magnet 30 to deflect outward, driving the front contact bar 28 to deflect, so that the front contact bar 28 and the rear contact bar 29 come into contact, thus connecting the circuit between the front contact bar 28 and the rear contact bar 29. Since there is a voltage at both ends of the fourth branch of the short wire 42 and the fourth wire mesh 46, if the front contact bar 28, the rear contact bar 29 and the copper wire 31 inside the relay 8 work normally, the indicator light 18 at one end of the relay 8 is lit, achieving the effect of making it easier for the tester to observe the test results. By simultaneously testing whether the internal hardware of the relay 8 is normal and whether the working state is normal, the time for detecting the relay 8 is saved, achieving the effect of improving the detection efficiency of the relay 8. By rotating the rotating frame 15, the power connection plate 36 on one side of the rotating frame 15 contacts the upper conductive bar 25, so that the main multimeter 11 connects the circuit between the upper conductive bar 25 through the movable wire 19, the conductive cylinder 20 and the power connection plate 36. By pressing the operating rod 34, the operating rod 34 squeezes the operating spring 35,The operating rod 34 drives the power connection plate 36 to slide downward. The power connection plate 36 contacts the lower conductive bar 22 at the bottom, achieving the effect of connecting the lower conductive bar 22 and the upper conductive bar 25, enabling the rotating frame 15 and the mounting frame 21 to slide on one side of the conductive groove 16. By changing the position of the power connection plate 36 and making the operating rod 34 stuck inside multiple stop grooves on the edge of the movement groove side, the power connection plate 36 contacts multiple upper conductive bars 25 respectively, achieving the effect of quickly detecting multiple relays 8, increasing the number of relays 8 detected at one time. The main multimeter 11 is used to detect the relays 8 for the first time. If an abnormality occurs, the sliding block 3 can be slid by the push rod 4 to separate the sliding block 3 from the first fixed block 2 and make the sliding block 3 contact the second fixed block 6, so that the positive wire and the negative wire at the bottom of the auxiliary multimeter 7 are connected to the first wire 12 and the second wire 13. Then, the relays 8 are detected again by the auxiliary multimeter 7. If the same phenomenon often occurs, it can be excluded that it is the fault cause of the main multimeter 11, achieving the effect of improving the accuracy rate of detecting the relays 8. When the tester observes the main multimeter 11 and the auxiliary multimeter 7, by rotating the placement plate 49, the stop plate 52 presses one end of the limit rod 51. By compressing the limit spring, one end of the limit rod 51 is stuck inside different limit holes on the stop plate 52, making the tilting angles of the main multimeter 11 and the auxiliary multimeter 7 different, facilitating the tester to observe, achieving the effect of changing the tilting angles of the main multimeter 11 and the auxiliary multimeter 7.,

[0047] 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 of the present invention and its inventive concept, making equivalent replacements or changes should be covered within the protection scope of the present invention.,

Claims

1. A relay testing device, comprising a housing (1), characterized in that: The top of the housing (1) is provided with a plurality of positioning holes, and a plurality of relays (8) are inserted into the positioning holes. An arc-shaped housing (10) is fixedly connected to a position of the upper surface of the housing (1) near the relay (8), and a positioning groove is provided on the upper surface of the arc-shaped housing (10). Two fixed rails (37) are fixedly connected to the bottom inner wall of the housing (1), and a first moving plate (14) is slidably connected to the top of the fixed rail (37), and a second moving plate (43) is fixedly connected to one side of the first moving plate (14). An adjusting rod (9) is fixedly connected to the top of the first moving plate (14). The top surface of the first moving plate (14) is respectively fixedly connected to a plurality of seventh power connection frames (59) and an eighth power connection frame (60); the top surface of the first moving plate (14) is respectively fixedly connected to a plurality of fifth power connection frames (57) and a sixth power connection frame (58) at a position close to the seventh power connection frame (59); the top surface of the second moving plate (43) is respectively fixedly connected to a plurality of first power connection frames (53) and a second power connection frame (54); the top surface of the second moving plate (43) is respectively fixedly connected to a plurality of third power connection frames (55) and a fourth power connection frame (56) at a position close to the second power connection frame (54).

2. A relay testing device according to claim 1, characterized in that: The inner wall of the relay (8) is provided with a relay mechanism, and the relay mechanism is used to realize weak current control of strong current; The relay mechanism comprises a first contact plate (26) fixedly connected to the bottom of one end of the relay (8); a second contact plate (27) is fixedly connected to the bottom of the relay (8) near the first contact plate (26); a third contact plate (32) is fixedly connected to the bottom of the other end of the relay (8); a fourth contact plate (33) is fixedly connected to the bottom of the relay (8) near the third contact plate (32); a copper wire (31) is fixedly connected to the inner wall of the bottom of the relay (8); a front contact strip (28) and a rear contact strip (29) are respectively fixedly connected to the inner wall of the bottom of the relay (8) near one end of the copper wire (31); a magnet (30) is fixedly connected to one side of the front contact strip (28); the first contact plate (26) is electrically connected to the front contact strip (28); the rear contact strip (29) is electrically connected to the second contact plate (27); and the third contact plate (32) and the fourth contact plate (33) are respectively electrically connected to the two ends of the copper wire (31).

3. A relay testing device according to claim 2, characterized in that: A first circuit mechanism is provided on both sides of the first moving plate (14), and the first circuit mechanism is used to control a fifth power connection frame (57), a sixth power connection frame (58), a seventh power connection frame (59), and an eighth power connection frame (60); The first circuit mechanism comprises a second wire mesh (40) arranged on one side of the first moving plate (14), the second wire mesh (40) being provided with a plurality of first branches, a first wire mesh (39) being arranged on the other side of the first moving plate (14), the first wire mesh (39) being provided with a plurality of second branches, the bottom of the second wire mesh (40) being electrically connected to a first power line (44), the bottom of the first wire mesh (39) being electrically connected to a second power line (45), a fixing plate (17) being fixedly connected to the bottom of the housing (1), an upper conductive strip (25) and a lower conductive strip (22) being arranged on one side of the fixing plate (17), one side of the lower conductive strip (22) being electrically connected to a first connecting line (23), one side of the upper conductive strip (25) being electrically connected to a second connecting line (24), the seventh power connection frame (59) and the eighth power connection frame (60) being electrically connected to the second connecting line (24) respectively, and the lower conductive strip (22) and the upper conductive strip (25) being insulated from each other.

4. A relay testing device according to claim 3, characterized in that: The bottom end of the first power line (44) is electrically connected to the power source (38), the bottom end of the second power line (45) is electrically connected to the power source (38), the first branch is electrically connected to the sixth power connection rack (58), the second branch is electrically connected to the fifth power connection rack (57), and the power source (38) outputs a twelve volt voltage through the first power line (44) and the second power line (45).

5. A relay testing device according to claim 4, characterized in that: A second circuit mechanism is provided on both sides of the second moving plate (43), and the second circuit mechanism is used to control the first power connection frame (53), the second power connection frame (54), the third power connection frame (55) and the fourth power connection frame (56); The second circuit mechanism comprises a third wire mesh (41) arranged on one side of the second moving plate (43), the third wire mesh (41) being provided with a plurality of third branches, a fourth wire mesh (46) being arranged on the other side of the second moving plate (43), the fourth wire mesh (46) being provided with a plurality of fourth branches, the bottom of the third wire mesh (41) being electrically connected to the second power line (45), the bottom of the fourth wire mesh (46) being electrically connected to the first power line (44), a plurality of short wires (42) being arranged on the other side of the second moving plate (43), the short wires (42) being electrically connected to the second lamp line (48).

6. A relay testing device according to claim 5, characterized in that: The fourth branch is electrically connected to the first lamp line (47), one end of the first lamp line (47) is electrically connected to an indicator light (18), the short wire (42) is electrically connected to a third power connection frame (55), the third wire network (41) is electrically connected to a fourth power connection frame (56), and the other end of the first connecting wire (23) is electrically connected to the first power connection frame (53) and the second power connection frame (54), respectively.

7. A relay testing device according to claim 6, characterized in that: A detection mechanism is provided at one end of the housing (1), and the detection mechanism is used to perform an initial detection; The detection mechanism comprises two conductive slots (16) fixedly connected to an inner wall of one side of the housing (1); a conductive cylinder (20) is slidably connected inside the conductive slot (16); one side of the conductive cylinder (20) is electrically connected to a movable line (19); a mounting frame (21) is fixedly connected to a position of one side of the conductive cylinder (20) near the movable line (19); one side of the mounting frame (21) is rotatably connected to a rotating frame (15); an operating rod (34) is slidably connected to the top of the rotating frame (15); one end of the operating rod (34) is sleeved with an operating spring (35); the bottom end of the operating rod (34) is fixedly connected to two power connection plates (36); a sliding slot is provided on one side of the power connection plate (36); the sliding slot is tightly fitted with one side surface of the upper conductive strip (25) and the lower conductive strip (22); a moving slot is provided on the upper surface of the housing (1); and a plurality of stop slots are provided on one side edge of the moving slot.

8. A relay testing device according to claim 7, characterized in that: The other side of the conductive cylinder (20) is electrically connected to a first wire (12) and a second wire (13), respectively. The first wire (12) and the second wire (13) respectively penetrate the outer wall of the housing (1). A slide rail (5) is fixedly connected to the outer wall of one side of the housing (1) near the first wire (12). A slide block (3) is slidably connected to one side of the slide rail (5). A push rod (4) is fixedly connected to one side of the slide block (3). Two guide rods are arranged on the inner wall of the slide block (3). A first fixed block (2) is fixedly connected to the outer wall of one side of the housing (1) near the slide block (3).

9. A relay testing device according to claim 8, characterized in that: A second fixed block (6) is fixedly connected to one end of the housing (1) near the slide rail (5), and two ends of the housing (1) are respectively fixedly connected to a bottom plate (50), and a fixed rod is fixedly connected to the upper surface of the bottom plate (50), and a placement plate (49) is rotatably connected to one side of the fixed rod, and a main multimeter (11) and an auxiliary multimeter (7) are respectively arranged on the upper surface of the placement plate (49), and a positive electrode line and a negative electrode line are respectively arranged at the bottom of the main multimeter (11) and the auxiliary multimeter (7).

10. A relay testing device according to claim 9, characterized in that: The other end of the housing (1) is provided with an adjustment mechanism, which is used for performing a second re-inspection; The adjustment mechanism comprises a limit rod (51) slidably connected to one side of the bottom end of the fixed rod, one end of the limit rod (51) is sleeved with a limit spring, one side edge of the placement plate (49) is fixedly connected to a stop plate (52), and one side of the stop plate (52) is provided with a plurality of limit holes.

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