CN116520027A - Relay contact resistance measuring device and method - Google Patents
Relay contact resistance measuring device and method Download PDFInfo
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- CN116520027A CN116520027A CN202310811710.1A CN202310811710A CN116520027A CN 116520027 A CN116520027 A CN 116520027A CN 202310811710 A CN202310811710 A CN 202310811710A CN 116520027 A CN116520027 A CN 116520027A
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- 238000005259 measurement Methods 0.000 claims abstract description 32
- 230000005540 biological transmission Effects 0.000 claims description 38
- 238000000691 measurement method Methods 0.000 abstract description 2
- 238000010586 diagram Methods 0.000 description 7
- 230000009286 beneficial effect Effects 0.000 description 1
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- 238000005265 energy consumption Methods 0.000 description 1
- 230000020169 heat generation Effects 0.000 description 1
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R27/00—Arrangements for measuring resistance, reactance, impedance, or electric characteristics derived therefrom
- G01R27/02—Measuring real or complex resistance, reactance, impedance, or other two-pole characteristics derived therefrom, e.g. time constant
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R1/00—Details of instruments or arrangements of the types included in groups G01R5/00 - G01R13/00 and G01R31/00
- G01R1/02—General constructional details
- G01R1/04—Housings; Supporting members; Arrangements of terminals
- G01R1/0408—Test fixtures or contact fields; Connectors or connecting adaptors; Test clips; Test sockets
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01R—MEASURING ELECTRIC VARIABLES; MEASURING MAGNETIC VARIABLES
- G01R31/00—Arrangements for testing electric properties; Arrangements for locating electric faults; Arrangements for electrical testing characterised by what is being tested not provided for elsewhere
- G01R31/327—Testing of circuit interrupters, switches or circuit-breakers
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- General Physics & Mathematics (AREA)
- Measurement Of Resistance Or Impedance (AREA)
Abstract
The utility model discloses a relay contact resistance measurement device and a relay contact resistance measurement method, and relates to the technical field of resistance measurement. The utility model can automatically measure a plurality of contacts of the relay, and the measuring process is continuously and rapidly carried out, thereby having higher working efficiency.
Description
Technical Field
The utility model relates to the technical field of resistance measurement, in particular to a relay contact resistance measurement device and a relay contact resistance measurement method.
Background
Relays are common control elements in industrial control systems and power systems, and are widely used in industrial automation processes. The resistance of the relay contacts is an important parameter for maintaining the relay to work normally, because too high a resistance can lead to poor contact, heat generation and increased energy consumption, while low resistance can lead to excessive current causing damage to the relay circuit. Therefore, accurate measurement of the resistance of the relay contacts is a necessary condition to ensure system stability and long life. The traditional contact resistance measuring method needs to manually operate the electronic watch to measure a plurality of contacts on the relay, and is low in efficiency, and human body damage can be caused by manual operation errors.
The utility model patent of China with the bulletin number of CN214895519U discloses a workbench for measuring contact resistance of a relay contact, which comprises a frame body, wherein a support frame is fixedly arranged on the frame body, a support plate is fixedly arranged on the support frame, a fixing mechanism is fixedly arranged on the support plate, the fixing mechanism comprises a placing plate, the placing plate is fixedly arranged on the support plate, a clamping rod is slidably arranged on the placing plate, and a chute is fixedly arranged on the placing plate. The utility model can realize the installation and fixation of the relay and various elements to a certain extent so as to facilitate the measurement of the relay, but can not automatically measure a plurality of joints of the relay, and has low working efficiency.
Disclosure of Invention
The utility model aims to provide a device for automatically measuring a plurality of contacts of a relay, and the measuring process can be continuously and rapidly carried out.
In order to solve the technical problems, the utility model adopts the following technical scheme: the utility model provides a relay contact resistance measuring device, including the relay, track moving mechanism, switch measuring mechanism slidable mounting is on track moving mechanism, track moving mechanism includes the side rail, slidable mounting has the mount on the side rail, fixed mounting has the wave plate on the side rail, be provided with the wave chute on the wave plate, slidable mounting has the crossbeam on the mount, crossbeam and wave plate sliding connection, fixed mounting has the depression bar under fixed on the crossbeam, slidable mounting has fixed electrode on the depression bar under fixed, install electrode spring between fixed electrode and the fixed depression bar under, slidable mounting has right movable depression bar under on the crossbeam, slidable mounting has left movable electrode under the depression bar on the right movable electrode, slidable mounting has left movable electrode on the left movable depression bar under the left movable electrode, rotatable mounting has the dwang on the crossbeam, fixed mounting has the crossbeam gear on the dwang, fixed mounting has the crossbeam rack on the mount, crossbeam rack forms the rack-and-pinion cooperation with the crossbeam gear.
Further, a first contact, a second contact, a third contact, a fourth contact, a fifth contact, a sixth contact, a seventh contact, an eighth contact, a ninth contact, a tenth contact, an eleventh contact and a twelfth contact are fixedly installed on the relay, a normally closed contact and a normally open contact are arranged on the relay, and the normally closed contact comprises: the first contact is connected with the ninth contact, the second contact is connected with the tenth contact, the third contact is connected with the eleventh contact, the fourth contact is connected with the twelfth contact, and the normally open contact comprises: the fifth contact is connected with the ninth contact, the sixth contact is connected with the tenth contact, the seventh contact is connected with the eleventh contact, and the eighth contact is connected with the twelfth contact.
Further, a right cable is fixedly installed on the fixing frame, the lower end of the right cable is fixedly connected with the right movable electrode, an electric joint is installed at the height of the upper end of the right cable, a left cable is fixedly installed on the fixing frame, the lower end of the left cable is fixedly connected with the left movable electrode, a fixed cable is fixedly installed on the fixing frame, the lower end of the fixed cable is fixedly connected with the fixed electrode, a triangular block is fixedly installed on the cross beam, a middle spring is installed between the cross beam and the fixing frame, a contact point measuring meter is slidably installed on the fixing frame, two ends of the contact point measuring meter are respectively contacted with the right cable and the fixed cable, a meter spring is installed between the contact point measuring meter and the fixing frame, a traverse bar is slidably installed on the fixing frame, a traverse spring is installed between the traverse bar and the fixing frame, the traverse bar is matched with the triangular block, and the traverse spring is matched with the contact point measuring meter.
Further, the measuring device further comprises a feeding mechanism, the feeding mechanism comprises a transmission frame, the transmission frame is fixedly arranged on the ground, the side guide rail is fixedly arranged on the transmission frame, a transmission wheel is rotatably arranged on the transmission frame, a transmission belt is fixedly arranged on the transmission wheel, the transmission wheel is connected with the transmission belt in a belt mode, a wheel motor is fixedly arranged on the transmission frame, an output shaft of the wheel motor is fixedly connected with the transmission wheel, and the relay is fixedly arranged on the transmission belt.
Further, a movable rack is fixedly arranged on the side guide rail, a movable motor is fixedly arranged on the fixing frame, a movable gear is fixedly arranged on an output shaft of the movable motor, and the movable gear and the movable rack form a gear-rack fit.
Further, the measuring device further comprises an auxiliary measuring mechanism, the auxiliary measuring mechanism comprises a plate sliding rod, the plate sliding rod is fixedly arranged on the side guide rail, a linkage plate is slidably arranged on the plate sliding rod, a plate spring is arranged between the linkage plate and the measuring spring, a linkage pressure rod is fixedly arranged on the linkage plate, and a linkage electrode is slidably arranged on the linkage pressure rod.
Further, a connecting frame is fixedly arranged on the side guide rail, a main conducting strip is slidably arranged on the connecting frame, an auxiliary conducting strip is slidably arranged on the connecting frame, the main conducting strip is arranged above the fourth contact, the auxiliary conducting strip is arranged above the twelfth contact, a conducting strip spring is arranged between the auxiliary conducting strip and the connecting frame, an auxiliary measuring meter is fixedly arranged on the connecting frame, an electric wire is fixedly arranged on the auxiliary measuring meter, one end of the electric wire is fixedly connected with the main conducting strip, and the other end of the electric wire is fixedly connected with the auxiliary conducting strip.
Further, the measuring device further comprises a coil measuring mechanism, the coil measuring mechanism comprises a passive pressing plate, the passive pressing plate is slidably mounted on the plate sliding rod, a coil main lower pressing rod is fixedly mounted on the passive pressing plate, a coil main electrode is slidably mounted on the coil main lower pressing rod, a measuring spring is fixedly mounted between the coil main electrode and the coil main lower pressing rod, a coil auxiliary lower pressing rod is fixedly mounted on the passive pressing plate, a coil auxiliary electrode is slidably mounted on the coil auxiliary lower pressing rod, a coil measuring meter is fixedly mounted on the passive pressing plate, two ends of the coil measuring meter are connected with the coil main lower pressing rod and the coil auxiliary lower pressing rod, and a first coil and a second coil are fixedly mounted on the relay.
Further, an alarm display screen is fixedly arranged on the side guide rail and is electrically connected with the contact point measuring meter, the coil measuring meter and the auxiliary measuring meter.
The utility model also discloses a relay contact resistance measuring method, which adopts the resistance measuring device and comprises the following specific steps:
s1: checking whether the fixing frame is positioned at the initial position;
s2: starting the wheel motor, conveying the relay to the lower part of the fixing frame, and then closing the wheel motor;
s3: starting a mobile motor, driving a beam to move on a corrugated plate by a fixing frame, and sequentially measuring resistance of the four contacts, namely a fifth contact is connected with a ninth contact, a first contact is connected with the ninth contact, a sixth contact is connected with a tenth contact and a second contact is connected with an electric wire;
s4: the fixing frame continues to move, the seventh contact is connected with the eleventh contact to perform resistance measurement, the passive plate descends, and the first coil is connected with the second coil to perform resistance measurement;
s5: the fixing frame continues to move, the third contact is connected with the first contact, and the eighth contact is connected with the twelfth contact to measure resistance;
s6, the fixing frame continues to move, the linkage plate is driven to descend, resistance measurement is carried out on the fourth contact connected with the twelfth contact, and therefore all contact points of the relay are measured;
s7: and restarting the wheel motor, transporting the next relay to the lower part of the fixing frame, reversing the moving motor during the transportation, and moving and resetting the fixing frame.
Compared with the prior art, the utility model has the beneficial effects that: (1) The utility model can automatically measure a plurality of contacts of the relay, and the measuring process is continuously and rapidly carried out, thereby having higher working efficiency; (2) The feeding mechanism can control the movement of the relays, and automatically measure a plurality of relays in batches; (3) The auxiliary measuring mechanism can measure the relay contact which can not be measured by the switching measuring mechanism; (4) The coil measuring mechanism can measure the resistance of the coil on the relay, and the measurement and the relay contact point measurement are synchronously carried out, so that no additional manual operation is needed.
Drawings
Fig. 1 is a schematic diagram of the overall structure of the present utility model.
Fig. 2 is a schematic diagram of a track movement mechanism according to the present utility model.
FIG. 3 is a schematic diagram of an alarm display of the present utility model.
Fig. 4 is a schematic diagram of a switching measurement mechanism according to the present utility model.
Fig. 5 is a schematic view of a beam of the present utility model.
Fig. 6 is a schematic diagram of a partial structure of a switching measurement mechanism according to the present utility model.
Fig. 7 is an enlarged schematic view of a portion of fig. 6 at a.
FIG. 8 is a schematic view of a plate slide bar of the present utility model.
Fig. 9 is a schematic view of a relay of the present utility model.
Fig. 10 is a schematic diagram of a coil measuring mechanism according to the present utility model.
FIG. 11 is a schematic diagram of an auxiliary measuring mechanism according to the present utility model.
Reference numerals: 1-a relay; 2-a transmission frame; 3-a driving wheel; 4-a transmission belt; 5-wheel motor; 6-side rails; 7-moving the rack; 8-a mobile motor; 9-moving the gear; 10-fixing frame; 11-a corrugated plate; 12-a cross beam; 13-fixing the pressing rod; 14-fixing the electrode; 15-electrode springs; 16-right movable pressing rod; 17-right movable electrode; 18-left movable pressing rod; 19-left movable electrode; 20-left cable; 21-right cable; 22-fixed cable; 23-triangular blocks; 24-rotating a rod; 25-torsion springs; 26-a beam gear; 27-a cross beam rack; 28-an intermediate spring; 29-contact meter; 30-a watch spring; 31-a traverse bar; 32-a traverse spring; 33-plate slide bar; 34-passive platen; 35-coil main pressing rod; 36-measuring a spring; 37-coil main electrode; 38-coil pair pressing rod; 39-coil auxiliary electrode; 40-coil gauge; 41-leaf springs; 42-linkage plate; 43-linkage compression bar; 44-linkage electrode; 45-connecting frames; 46-main conductive sheet; 47-auxiliary conductive sheets; 48-secondary meter; 49-conductive leaf spring; 50-electric wires; 51-first contacts; 52-a second contact; 53-third contact; 54-fourth contact; 55-fifth contact; 56-sixth contacts; 57-seventh contact; 58-eighth contact; 59-ninth contact; 60-tenth contact; 61-eleventh contact; 62-twelfth contact; 63-a first coil; 64-a second coil; 65-an alarm display screen.
Detailed Description
The technical scheme of the utility model is further described below by the specific embodiments with reference to the accompanying drawings.
Examples: the relay contact resistance measuring device comprises a relay 1, a track moving mechanism and a switching measuring mechanism, wherein the switching measuring mechanism is slidably mounted on the track moving mechanism, the track moving mechanism comprises a side guide rail 6, a fixing frame 10 is slidably mounted on the side guide rail 6, a corrugated plate 11 is fixedly mounted on the side guide rail 6, a corrugated chute is arranged on the corrugated plate 11, a cross beam 12 is slidably mounted on the fixing frame 10, the cross beam 12 is slidably connected with the corrugated plate 11, a fixed lower pressure rod 13 is fixedly mounted on the cross beam 12, a fixed electrode 14 is slidably mounted on the fixed lower pressure rod 13, an electrode spring 15 is mounted between the fixed electrode 14 and the fixed lower pressure rod 13, a right movable lower pressure rod 16 is slidably mounted on the cross beam 12, a right movable electrode 17 is slidably mounted on the right movable lower pressure rod 16, a left movable electrode 19 is slidably mounted on the left movable lower pressure rod 18, a rotating rod 24 is rotatably mounted on the cross beam 12, a cross beam gear 26 is fixedly mounted on the rotating rod 24, a cross beam rack 27 is fixedly mounted on the fixing frame 10, and the cross beam 27 and the cross beam gear 26 form a gear rack in a gear-and rack fit. The fixing frame 10 slides on the side guide rail 6 to drive the cross beam 12 to move, the cross beam 12 is driven to slide on the corrugated plate 11 to drive the cross beam 12 to move and simultaneously to reciprocate and rise, the cross beam 12 is driven to move downwards when moving to drive the fixed lower pressure rod 13 to drive the fixed electrode 14 to move, the fixed electrode 14 contacts the contact point of the relay 1 and compresses the electrode spring 15, the cross beam 12 is driven to move simultaneously to drive the right movable lower pressure rod 16 and the left movable lower pressure rod 18 to descend, the right movable lower pressure rod 16 drives the right movable electrode 17 to descend, the left movable lower pressure rod 18 drives the left movable electrode 19 to descend, the initial position of the right movable lower pressure rod 16 is lower than the left movable lower pressure rod 18, the right movable electrode 17 contacts the contact point of the relay 1, the fixed electrode 14 and the right movable electrode 17 form a series circuit to measure two contact points of the relay, when the right movable pressing rod 16 and the left movable pressing rod 18 are lowered together until the beam gear 26 contacts the beam rack 27, the beam gear 26 rotates under the action of the beam rack 27, the beam gear 26 drives the rotating rod 24 to rotate and twists the torsion spring 25, the left movable pressing rod 18 slides in the sliding groove of the rotating rod 24, the right movable pressing rod 16 slides in the sliding groove of the rotating rod 24, the rotating rod 24 rotates anticlockwise, the left movable pressing rod 18 is driven to descend relative to the beam 12, the right movable pressing rod 16 ascends relative to the beam 12, the heights of the left movable pressing rod 18 and the right movable pressing rod 16 are interchanged, the right movable electrode 17 is not contacted with the relay 1 any more, the left movable electrode 19 contacts the relay 1, the left movable electrode 19 and the fixed electrode 14 form a closed loop, and other contacts of the relay 1 are replaced for measurement.
The relay 1 is fixedly provided with a first contact 51, a second contact 52, a third contact 53, a fourth contact 54, a fifth contact 55, a sixth contact 56, a seventh contact 57, an eighth contact 58, a ninth contact 59, a tenth contact 60, an eleventh contact 61 and a twelfth contact 62, and the relay 1 is provided with a normally closed contact and a normally open contact, wherein the normally closed contact comprises: the first contact 51 is connected to the ninth contact 59, the second contact 52 is connected to the tenth contact 60, the third contact 53 is connected to the eleventh contact 61, the fourth contact 54 is connected to the twelfth contact 62, and the normally open contact includes: the fifth contact 55 connects to a ninth contact 59, the sixth contact 56 connects to a tenth contact 60, the seventh contact 57 connects to an eleventh contact 61, and the eighth contact 58 connects to a twelfth contact 62. When the switching measuring mechanism is used for measuring for the first time, the right movable electrode 17 is contacted with the fifth contact 55, the fixed electrode 14 is contacted with the ninth contact 59, after the first switching, the left movable electrode 19 is contacted with the first contact 51, the fixed electrode 14 is contacted with the ninth contact 59, the fixing frame 10 continuously slides on the side guide rail 6, the cross beam 12 also continuously and repeatedly ascends and descends on the corrugated plate 11, the fixed electrode 14 moves to be above the tenth contact 60, the fixed electrode 14 is contacted with the tenth contact 60, the right movable electrode 17 is also contacted with the sixth contact 56, the measurement of a plurality of contacts of the relay 1 is realized, the switching measuring mechanism finishes the measurement of all the contacts except that the fourth contact 54 is connected with the twelfth contact 62.
The right cable 21 is fixedly installed on the fixing frame 10, the lower end of the right cable 21 is fixedly connected with the right movable electrode 17, an electric joint is installed at the height of the upper end of the right cable 21, the left cable 20 is fixedly installed on the fixing frame 10, the lower end of the left cable 20 is fixedly connected with the left movable electrode 19, the fixed cable 22 is fixedly installed on the fixing frame 10, the lower end of the fixed cable 22 is fixedly connected with the fixed electrode 14, the triangular block 23 is fixedly installed on the cross beam 12, the middle spring 28 is installed between the cross beam 12 and the fixing frame 10, the contact meter 29 is slidingly installed on the fixing frame 10, the two ends of the contact meter 29 are respectively contacted with the right cable 21 and the fixed cable 22, the meter spring 30 is installed between the contact meter 29 and the fixing frame 10, the transverse bar 31 is slidingly installed on the fixing frame 10, the transverse spring 32 is installed between the transverse bar 31 and the fixing frame 10, and the triangular block 23 are matched, and the transverse spring 32 is matched with the contact meter 29. When the cross beam 12 moves downwards, the triangular block 23 is driven to move downwards, the triangular block 23 drives the traverse bar 31 to move leftwards, the traverse bar 31 drives the contact point measuring meter 29 to move upwards, the contact point measuring meter 29 moves between the left cable 20 and the fixed cable 22, two ends of the contact point measuring meter 29 are respectively contacted with the left cable 20 and the fixed cable 22, when the contact point measuring meter 29 is arranged below, normally open contact point measurement is carried out, and when the contact point measuring meter 29 is arranged above, normally closed contact point measurement is carried out.
The measuring device further comprises a feeding mechanism, the feeding mechanism comprises a transmission frame 2, the transmission frame 2 is fixedly arranged on the ground, a side guide rail 6 is fixedly arranged on the transmission frame 2, a transmission wheel 3 is rotatably arranged on the transmission frame 2, a transmission belt 4 is fixedly arranged on the transmission wheel 3, the transmission wheel 3 and the transmission belt 4 form belt connection, a wheel motor 5 is fixedly arranged on the transmission frame 2, an output shaft of the wheel motor 5 is fixedly connected with the transmission wheel 3, and a relay 1 is fixedly arranged on the transmission belt 4. The wheel motor 5 starts to drive the driving wheel 3 to rotate, the driving wheel 3 drives the driving belt 4 to rotate, the driving belt 4 drives the relays 1 to move, and the relays 1 sequentially pass through the lower part of the switching measuring mechanism to measure the resistance.
The side guide rail 6 is fixedly provided with a movable rack 7, the fixing frame 10 is fixedly provided with a movable motor 8, the output shaft of the movable motor 8 is fixedly provided with a movable gear 9, and the movable gear 9 and the movable rack 7 form a gear-rack fit. The moving motor 8 is started to drive the moving gear 9 to rotate, the moving gear 9 rotates on the moving rack 7, and drives the fixing frame 10 to slide on the side guide rail 6 to provide power for the track moving mechanism.
The measuring device further comprises an auxiliary measuring mechanism, the auxiliary measuring mechanism comprises a plate sliding rod 33, the plate sliding rod 33 is fixedly arranged on the side guide rail 6, a linkage plate 42 is slidably arranged on the plate sliding rod 33, a plate spring 41 is arranged between the linkage plate 42 and the measuring spring 36, a linkage pressure rod 43 is fixedly arranged on the linkage plate 42, and a linkage electrode 44 is slidably arranged on the linkage pressure rod 43. When the beam 12 moves to the end of the fixed frame 10, that is, the fixed electrode 14 contacts the twelfth contact 62, and the right movable electrode 17 contacts the eighth contact 58, the beam 12 descends and the right movable electrode 17 ascends while the left movable electrode 19 descends and the right movable electrode 17 separates from the eighth contact 58 while the left movable electrode 19 is not connected with any contact, at this time, the beam 12 descends to press the linkage plate 42, the linkage plate 42 moves downwards to drive the linkage pressure bar 43 and the linkage electrode 44 to descend, the linkage electrode 44 contacts the fourth contact 54, the fixed electrode 14 and the linkage electrode 44 form a closed loop, and the contacts which cannot be measured by the switching measuring mechanism are measured.
The side guide rail 6 is fixedly provided with a connecting frame 45, the connecting frame 45 is provided with a main conducting strip 46 in a sliding mode, the connecting frame 45 is provided with an auxiliary conducting strip 47 in a sliding mode, the main conducting strip 46 is arranged above the fourth contact 54, the auxiliary conducting strip 47 is arranged above the twelfth contact 62, a conducting strip spring 49 is arranged between the auxiliary conducting strip 47 and the connecting frame 45, the connecting frame 45 is fixedly provided with an auxiliary measuring meter 48, the auxiliary measuring meter 48 is fixedly provided with an electric wire 50, one end of the electric wire 50 is fixedly connected with the main conducting strip 46, and the other end of the electric wire 50 is fixedly connected with the auxiliary conducting strip 47. When the fourth contact 54 is connected to the twelfth contact 62, the fixed electrode 14 is moved to contact the twelfth contact 62, the fixed electrode 14 is contacted with the auxiliary conductive sheet 47, the auxiliary conductive sheet 47 is connected to the twelfth contact 62, the linkage electrode 44 is lowered to contact the fourth contact 54, the fourth contact 54 is connected to the main conductive sheet 46, the main conductive sheet 46 is connected to the auxiliary conductive sheet 47 through the auxiliary measuring meter 48, both ends of the auxiliary measuring meter 48 are respectively connected to the fourth contact 54 and the twelfth contact 62, and the fourth contact 54 is connected to the twelfth contact 62 for measuring; the main conductive piece 46 and the auxiliary conductive piece 47 are provided with small inclined surfaces, and the main conductive piece 46 and the auxiliary conductive piece 47 can be pushed away for a small distance during the movement of the fixed electrode 14 and the linkage electrode 44.
The measuring device further comprises a coil measuring mechanism, the coil measuring mechanism comprises a driven pressing plate 34, the driven pressing plate 34 is slidably mounted on the plate sliding rod 33, a coil main pressing rod 35 is fixedly mounted on the driven pressing plate 34, a coil main electrode 37 is slidably mounted on the coil main pressing rod 35, a measuring spring 36 is fixedly mounted between the coil main electrode 37 and the coil main pressing rod 35, a coil auxiliary pressing rod 38 is fixedly mounted on the driven pressing plate 34, a coil auxiliary electrode 39 is slidably mounted on the coil auxiliary pressing rod 38, a coil measuring meter 40 is fixedly mounted on the driven pressing plate 34, two ends of the coil measuring meter 40 are connected with the coil main pressing rod 35 and the coil auxiliary pressing rod 38, and a first coil 63 and a second coil 64 are fixedly mounted on the relay 1. When the switching measuring mechanism is measuring the contact of the seventh contact 57 connected with the eleventh contact 61, the beam 12 moves just above the passive plate 34, and the height of the passive plate 34 is higher than that of the linkage plate 42, because the measurement of the eighth contact 58 connected with the twelfth contact 62 needs to be ensured to be ended when the fourth contact 54 is measured to be connected with the contact of the twelfth contact 62; when the fixed electrode 14 contacts with the eleventh contact 61, the beam 12 has pressed down the passive pressure plate 34, the passive pressure plate 34 drives the coil main pressure-down lever 35 and the coil sub pressure-down lever 38 to descend, the coil main electrode 37 contacts with the first coil 63, the coil sub electrode 39 contacts with the second coil 64, the coil measuring meter 40 is directly connected to the first coil 63 and the second coil 64 to form a closed loop, and the coil measuring meter 40 performs resistance measurement on the first coil 63 and the second coil 64.
An alarm display screen 65 is fixedly arranged on the side guide rail 6, and the alarm display screen 65 is electrically connected with the contact meter 29, the coil meter 40 and the auxiliary meter 48. The reading information on the contact meter 29, the coil meter 40 and the auxiliary meter 48 is directly observed through the alarm display screen 65.
The embodiment also provides a method for measuring the resistance of the relay contact, which adopts the resistance measuring device and comprises the following specific steps:
s1: checking whether the fixing frame 10 is located at the initial position;
s2: starting the wheel motor 5, transporting the relay 1 to the lower part of the fixing frame 10, and then closing the wheel motor 5;
s3: starting the mobile motor 8, driving the beam 12 to move on the corrugated plate 11 by the fixing frame 10, and sequentially measuring resistance of the four contacts, namely a fifth contact 55 is connected with a ninth contact 59, a first contact 51 is connected with the ninth contact 59, a sixth contact 56 is connected with a tenth contact 60, and a second contact 52 is connected with the electric wire 50;
s4: the fixed frame 10 continues to move, the seventh contact 57 is connected with the eleventh contact 61 to perform resistance measurement, the passive plate 34 descends, and the first coil 63 is connected with the second coil 64 to perform resistance measurement;
s5: the fixed frame 10 continues to move, the third contact 53 is connected with the first contact 51, the eighth contact 58 is connected with the twelfth contact 62, and resistance measurement is carried out;
s6, the fixing frame 10 continues to move, the linkage plate 42 is driven to descend, and resistance measurement is carried out on the connection of the fourth contact 54 and the twelfth contact 62, so that all contact points of the relay 1 are measured;
s7: the wheel motor 5 is restarted to transport the next relay 1 to the position below the fixing frame 10, and the moving motor 8 is reversed during the period to move and reset the fixing frame 10.
Claims (10)
1. The utility model provides a relay contact resistance measuring device, includes relay (1), track moving mechanism, switches measuring mechanism slidable mounting on track moving mechanism, its characterized in that: the track moving mechanism comprises a side guide rail (6), a fixing frame (10) is slidably mounted on the side guide rail (6), a corrugated plate (11) is fixedly mounted on the side guide rail (6), a corrugated chute is arranged on the corrugated plate (11), a cross beam (12) is slidably mounted on the fixing frame (10), the cross beam (12) is slidably connected with the corrugated plate (11), a fixed lower pressure rod (13) is fixedly mounted on the cross beam (12), a fixed electrode (14) is slidably mounted on the fixed lower pressure rod (13), an electrode spring (15) is mounted between the fixed electrode (14) and the fixed lower pressure rod (13), a right movable electrode (17) is slidably mounted on the right movable lower pressure rod (16), a left movable electrode (19) is slidably mounted on the left movable lower pressure rod (18), a rotating rod (24) is rotatably mounted on the cross beam (12), a cross beam gear (26) is fixedly mounted on the fixing frame (10), and the cross beam (27) and the gear rack (26) are matched with the gear rack (26).
2. A relay contact resistance measuring device according to claim 1, wherein: the relay (1) is fixedly provided with a first contact (51), a second contact (52), a third contact (53), a fourth contact (54), a fifth contact (55), a sixth contact (56), a seventh contact (57), an eighth contact (58), a ninth contact (59), a tenth contact (60), an eleventh contact (61) and a twelfth contact (62), and the relay (1) is provided with a normally closed contact and a normally open contact, wherein the normally closed contact comprises: the first contact (51) is connected with a ninth contact (59), the second contact (52) is connected with a tenth contact (60), the third contact (53) is connected with an eleventh contact (61), the fourth contact (54) is connected with a twelfth contact (62), and the normally open contact comprises: the fifth contact (55) is connected with the ninth contact (59), the sixth contact (56) is connected with the tenth contact (60), the seventh contact (57) is connected with the eleventh contact (61), and the eighth contact (58) is connected with the twelfth contact (62).
3. A relay contact resistance measuring device according to claim 2, wherein: the fixed mounting has right cable (21) on mount (10), the lower extreme and the right movable electrode (17) fixed connection of right cable (21), the high electric joint of installing of upper end of right cable (21), fixed mounting has left cable (20) on mount (10), the lower extreme and the left movable electrode (19) fixed connection of left cable (20), fixed mounting has fixed cable (22) on mount (10), the lower extreme and the fixed electrode (14) fixed connection of fixed cable (22), fixed mounting has triangular block (23) on crossbeam (12), install intermediate spring (28) between crossbeam (12) and mount (10), slidable mounting has joint measuring table (29) on mount (10), the both ends of joint measuring table (29) are respectively with right cable (21) and fixed cable (22) contact, install table spring (30) between joint measuring table (29) and the mount (10), slidable mounting has triangle strip (31) on mount (10), install triangle strip (32) between traverse strip (31) and mount (10), install triangle strip (31) and traverse strip (32) form joint measuring table (32) with traverse cooperation.
4. A relay contact resistance measuring device according to claim 3, wherein: the measuring device further comprises a feeding mechanism, the feeding mechanism comprises a transmission frame (2), the transmission frame (2) is fixedly placed on the ground, a side guide rail (6) is fixedly installed on the transmission frame (2), a transmission wheel (3) is rotatably installed on the transmission frame (2), a transmission belt (4) is fixedly installed on the transmission wheel (3), the transmission wheel (3) and the transmission belt (4) are connected through a belt, a wheel motor (5) is fixedly installed on the transmission frame (2), an output shaft of the wheel motor (5) is fixedly connected with the transmission wheel (3), and a relay (1) is fixedly placed on the transmission belt (4).
5. The relay contact resistance measurement device according to claim 4, wherein: the side guide rail (6) is fixedly provided with a movable rack (7), the fixing frame (10) is fixedly provided with a movable motor (8), the output shaft of the movable motor (8) is fixedly provided with a movable gear (9), and the movable gear (9) and the movable rack (7) form a gear-rack fit.
6. The relay contact resistance measurement device according to claim 5, wherein: the measuring device further comprises an auxiliary measuring mechanism, the auxiliary measuring mechanism comprises a plate sliding rod (33), the plate sliding rod (33) is fixedly arranged on the side guide rail (6), a linkage plate (42) is slidably arranged on the plate sliding rod (33), a plate spring (41) is arranged between the linkage plate (42) and the measuring spring (36), a linkage pressing rod (43) is fixedly arranged on the linkage plate (42), and a linkage electrode (44) is slidably arranged on the linkage pressing rod (43).
7. The relay contact resistance measurement device according to claim 6, wherein: a connecting frame (45) is fixedly installed on the side guide rail (6), a main conducting strip (46) is slidably installed on the connecting frame (45), an auxiliary conducting strip (47) is slidably installed on the connecting frame (45), the main conducting strip (46) is arranged above a fourth contact (54), the auxiliary conducting strip (47) is arranged above a twelfth contact (62), a conducting strip spring (49) is installed between the auxiliary conducting strip (47) and the connecting frame (45), an auxiliary measuring meter (48) is fixedly installed on the connecting frame (45), an electric wire (50) is fixedly installed on the auxiliary measuring meter (48), one end of the electric wire (50) is fixedly connected with the main conducting strip (46), and the other end of the electric wire (50) is fixedly connected with the auxiliary conducting strip (47).
8. The relay contact resistance measurement device according to claim 7, wherein: the measuring device further comprises a coil measuring mechanism, the coil measuring mechanism comprises a passive pressing plate (34), the passive pressing plate (34) is slidably mounted on the plate sliding rod (33), a coil main pressing rod (35) is fixedly mounted on the passive pressing plate (34), a coil main electrode (37) is slidably mounted on the coil main pressing rod (35), a measuring spring (36) is fixedly mounted between the coil main electrode (37) and the coil main pressing rod (35), a coil auxiliary pressing rod (38) is fixedly mounted on the passive pressing plate (34), a coil auxiliary electrode (39) is slidably mounted on the coil auxiliary pressing rod (38), a coil measuring table (40) is fixedly mounted on the passive pressing plate (34), two ends of the coil measuring table (40) are connected with the coil main pressing rod (35) and the coil auxiliary pressing rod (38), and a first coil (63) and a second coil (64) are fixedly mounted on the relay (1).
9. The relay contact resistance measurement device of claim 8, wherein: an alarm display screen (65) is fixedly arranged on the side guide rail (6), and the alarm display screen (65) is electrically connected with the contact measuring meter (29), the coil measuring meter (40) and the auxiliary measuring meter (48).
10. A method for measuring the resistance of a relay contact, characterized in that the resistance measuring device according to any one of claims 1 to 9 is used, comprising the following specific steps:
s1: checking whether the fixing frame (10) is positioned at an initial position;
s2: starting the wheel motor (5), transporting the relay (1) to the lower part of the fixing frame (10), and then closing the wheel motor (5);
s3: starting a mobile motor (8), driving a beam (12) to move on a corrugated plate (11) by a fixing frame (10), and sequentially measuring resistance of the four contacts, namely a fifth contact (55) is connected with a ninth contact (59), a first contact (51) is connected with the ninth contact (59), a sixth contact (56) is connected with a tenth contact (60), and a second contact (52) is connected with an electric wire (50);
s4: the fixing frame (10) continues to move, the seventh contact (57) is connected with the eleventh contact (61) to perform resistance measurement, the passive plate (34) descends, and the first coil (63) is connected with the second coil (64) to perform resistance measurement;
s5: the fixing frame (10) continues to move, the third contact (53) is connected with the first contact (51), and the eighth contact (58) is connected with the twelfth contact (62) to measure resistance;
s6, the fixing frame (10) continues to move to drive the linkage plate (42) to descend, and resistance measurement is carried out on the connection of the fourth contact (54) with the twelfth contact (62), so that all contact points of the relay (1) are measured;
s7: the wheel motor (5) is restarted, the next relay (1) is transported to the lower part of the fixing frame (10), the moving motor (8) is reversed during the period, and the fixing frame (10) is moved and reset.
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| CN116520027B (en) | 2023-09-12 |
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