Multifunctional digital display relay rapid test platform

Abstract

The utility model discloses a multifunctional digital display relay rapid test platform comprising a box body, a power supply module is arranged in the box body, and an operation panel is arranged on the top of the box body; a power switch, a relay base, a change-over switch, a voltage digital display meter and a resistance digital display meter are respectively arranged on the operation panel; the power supply module supplies power to the relay base, the voltage digital display meter and the resistance digital display meter respectively; the power supply switch controls the power supply module to output voltage, and the change-over switch comprises a power supply change-over switch and a contact change-over switch and is used for changing over working voltage applied to a relay coil and the number of contact measurement pairs. Through the testing device, the resistance values of a relay coil and a contact can be rapidly measured, an operator can conveniently judge the operation state of equipment, equipment such as a PLC processor is omitted, rapid switching of voltage and the contact can be achieved only through manual switching, and the cost of the testing device can be greatly reduced.

Description

TECHNICAL FIELD

[0001] The utility model belongs to relay testing technical field, concretely relates to a multifunctional digital display relay rapid test platform. BACKGROUND

[0002] The statements herein merely provide background information related to the utility model and do not necessarily constitute the prior art.

[0003] Relay is a commonly used electrical equipment, has the interactive relationship between the control system and the controlled system, is widely used in power system, automation system, motor protection system and other fields, it is actually a "automatic switch" with smaller current, lower voltage to control larger current, higher voltage, so it plays the role of automatic regulation, safety protection, conversion circuit in the circuit.

[0004] Relay mainly completes signal transmission, execution control, system power distribution and other functions, is one of the key electronic components in each system, which is composed of base, coil, core, armature, spring, contact, pin, shell and other parts. With the increase of the service life of relay, the coil, contact, core, armature, spring and other components inside the relay are aging, which can cause a series of problems such as performance degradation, frequent failure, safety hazard increase and so on, which brings many inconvenience and risk to production and life, therefore, the discrimination of relay state is particularly important.

[0005] By dissection and analysis of the relay with fault, it is determined that the main reasons are that the coil burnout of relay, the coil resistance too large leads to the contact unable to attract, the spring fatigue leads to the contact resistance increase, etc., and the fault points are all on the relay body. Therefore, the coil and contact resistance of relay are the main technical parameters reflecting the state of relay. During the operation stage of electrical equipment, it is necessary to measure the coil and contact resistance of relay regularly to determine whether it works normally.

[0006] At present, there are two conventional methods to discriminate the state of relay, one is to observe the contact condition of normally closed contact under the condition that the coil of relay is not powered, and then power on the coil of relay or manually press the test key to observe the closing condition of normally open contact; the other is to use the ohm range of multimeter to measure the coil and contact resistance value of relay for analysis.

[0007] However, the inventors find that the current method of discriminating relay has the following shortcomings:

[0008] (1) The data obtained by manually pressing the test key, observing or measuring with the ohm range of multimeter cannot reflect the actual state of core, armature, spring and other components;

[0009] (2) the relay coil is energized, the relay needs to be pulled out of the base, and then an external power supply is applied or the existing wiring is removed to measure, and the single relay needs about 3 minutes to complete the coil and normally open and normally closed contact resistance value measurement;

[0010] (3) the pressing force of the test key by the tester and the contact pressure of the handheld pen with the tested relay affect the test results of different testers and different test times.

[0011] (4) the existing test device often uses single-chip microcomputers and PLC processors to participate in test control, the manufacturing process is complex, the device cost is high, and it is not conducive to on-site mass production and use. Practical new type content

[0012] The utility model discloses a multifunctional digital display relay rapid test platform, which can measure relays of different voltage grades, quickly measure relay coils and contact resistance values, save test time, improve test efficiency, facilitate operation personnel to judge equipment operation state, and eliminate single-chip microcomputers, PLC processors and other equipment to reduce the cost of the device.

[0013] In order to achieve the above-mentioned purpose, the utility model is realized through the following technical scheme:

[0014] The technical scheme of the utility model provides a multifunctional digital display relay rapid test platform, which comprises: a box body, a power module is arranged in the box body, and an operation panel is arranged on the top of the box body; a power switch, a relay base, a switch, a voltage digital display meter and a resistance digital display meter are arranged on the operation panel respectively; the power module supplies power for the relay base, the voltage digital display meter and the resistance digital display meter; the power switch controls the output voltage of the power module; the switch comprises a power switch and a contact switch, and is used for switching the working voltage applied to the relay coil and the contact measurement logarithm.

[0015] In at least one embodiment, the power module comprises a first power module and a second power module; the first power module is an AC 220V input voltage to DC 220V output voltage power module, and the second power module is an AC 220V input voltage to DC 24V output voltage power module.

[0016] In at least one embodiment, the power switch comprises a first power switch, a second power switch and a third power switch; the first power switch is connected with the first power module, the second power switch is connected with the second power module, and the third power switch is connected with the lead-out wire of the input end of the first power module.

[0017] In at least one embodiment, the first power module is connected to a direct current 220V relay for power supply through a first power switch; the second power module is connected to a voltage digital display meter and a resistance digital display meter for power supply and connected to a direct current 24V relay for power supply through a second power switch; an outgoing line of an input end of the first power module is connected to a relay base for power supply of an alternating current 220V relay through a third power switch.

[0018] In at least one embodiment, the power switch includes four gears, the first gear is connected to the second power switch, the second gear is connected to the first power switch, the third gear is connected to the third power switch, and the fourth gear is connected to a coil resistance meter measurement loop.

[0019] In at least one embodiment, the contact switch includes four gears, which are connected to the first to fourth pairs of contacts of the relay respectively, and are used for switching of resistance measurement of different contacts.

[0020] In at least one embodiment, the voltage digital display meter includes a direct current voltage digital display meter and an alternating current voltage digital display meter; the direct current voltage digital display meter is arranged in a direct current relay coil working loop; and the alternating current voltage digital display meter is arranged in an alternating current relay coil working loop.

[0021] In at least one embodiment, the resistance digital display meter includes a coil resistance digital display meter and a contact resistance digital display meter; the coil resistance digital display meter is arranged in a relay coil working loop, and the contact resistance digital display meter is arranged in a relay contact working loop.

[0022] In at least one embodiment, a power socket is further arranged at the upper left corner of the operation panel, and a power main switch is arranged on the power socket, and the power main switch is connected to the power module.

[0023] In at least one embodiment, a folding box cover is arranged on the box.

[0024] The beneficial effects of the technical scheme of the utility model are as follows:

[0025] 1) The utility model discloses a multifunctional digital display relay rapid test platform, which can switch coil resistance measurement functions by rotating a power switch to control different power modules to supply power to a relay coil.

[0026] 2) The utility model discloses a kind of multifunctional digital display relay rapid test platform meets different test needs by mechanical control, can avoid the influence of the force of test personnel pressing test key and handheld pen and the contact pressure of the relay to be tested, ensure that test result is not influenced by artificial factor, ensure the consistency of test result.

[0027] 3) The utility model discloses a kind of multifunctional digital display relay rapid test platform saves PLC processor and other equipment, voltage, contact can be realized the quick switching of manual switching, can greatly reduce the complexity of manufacturing process of test device and device cost, it is convenient for on-site mass production use. BRIEF DESCRIPTION OF DRAWINGS

[0028] The drawings accompanying the specification provide further understanding of the utility model, and the illustrative embodiment of the utility model and its explanation are used to explain the utility model, and do not constitute undue limitation on the utility model.

[0029] Figure 1 It is a kind of multifunctional digital display relay rapid test platform overall schematic view of the utility model;

[0030] Figure 2 It is a kind of multifunctional digital display relay rapid test platform operating panel schematic view of the utility model;

[0031] Figure 3 It is the schematic diagram of the box body inside of a kind of multifunctional digital display relay rapid test platform of the utility model;

[0032] Figure 4 It is the circuit principle schematic diagram of a kind of multifunctional digital display relay rapid test platform of the utility model.

[0033] In the drawing: 1. box body;2. operating panel;3. power socket;4. relay base;5. direct current voltage digital display meter;6. alternating voltage digital display meter;7. coil resistance digital display meter;8. contact resistance digital display meter;9. power switch;10. contact switch;11. first power switch;12. second power switch;13. third power switch;14. first power module;15 second power module.

[0034] For showing the position of each part, the distance or size between them is exaggerated, and the schematic diagram is only used for illustration. DETAILED DESCRIPTION

[0035] It should be pointed out that the following detailed description is exemplary, and aims to provide further explanation of the utility model. Unless otherwise specified, all technical and scientific terms used in the utility model have the same meaning as that generally understood by ordinary skilled person in the technical field to which the utility model belongs.

[0036] It is to be noted that the terms used herein are only for the purpose of describing specific embodiments and are not intended to limit the exemplary embodiments according to the present application. As used herein, the singular form is intended to include the plural form as well, unless the context clearly indicates otherwise, and it should also be understood that the terms "comprise" and / or "include" when used in this specification, indicate the presence of features, steps, operations, devices, components and / or combinations thereof;

[0037] The terms "mounting", "connection", "connecting", "fixing" and the like in the present application should be understood in a broad sense, for example, can be fixedly connected, can be detachably connected, or be integrated; can be mechanically connected, can be electrically connected, can be directly connected, or indirectly connected through an intermediate medium, can be internal connection of two elements, or interaction relationship of two elements, and those skilled in the art can understand the specific meaning of the above terms in the present application according to the specific circumstances.

[0038] As introduced in the background, the purpose of the present application is to overcome the shortcomings of the prior art, and to provide a multifunctional digital display relay rapid test platform, which can measure relays of different voltage grades. Through the test device, the relay coil and contact resistance value can be quickly measured, the test time is saved, the test efficiency is improved, the equipment operation state is convenient for the operator to judge, and at the same time, the PLC processor and other equipment are saved, and the cost of the device is reduced.

[0039] Embodiment 1

[0040] In a typical embodiment of the present application, as shown in Figures 1-4 The embodiment discloses a multifunctional digital display relay rapid test platform, which comprises a box body 1, a power module is arranged in the box body 1, and an operation panel 2 is arranged at the top of the box body 1; a power switch, a relay base 4, a switch, a voltage digital display meter and a resistance digital display meter are arranged on the operation panel 2 respectively; the power module supplies power for the relay base 4, the voltage digital display meter and the resistance digital display meter; the power switch controls the output voltage of the power module, and the switch switches the working voltage applied to the relay coil and the contact measurement logarithm.

[0041] In the embodiment, the power supply modules inside the box 1 include a first power supply module 14 and a second power supply module 15. The first power supply module 14 is an AC220V input voltage to DC220V output voltage power supply module, which supplies power for the DC220V relay. The second power supply module 15 is an AC220V input voltage to DC24V output voltage power supply module, which is connected with the DC24V relay, the voltage digital display meter and the resistance digital display meter respectively, and supplies power for the DC24V relay, the voltage digital display meter and the resistance digital display meter. In addition, a line of AC220V power supply is led out from the input end of the first power supply module 14 to supply power for the AC220V relay.

[0042] In the embodiment, the power switches are arranged in the lower half of the operation panel 2, including a first power switch 11, a second power switch 12 and a third power switch 13. The first power switch 11 is connected with the first power supply module 14 to control the switch of the DC220V voltage. The second power switch 12 is connected with the second power supply module 15 to control the switch of the DC24V voltage. The third power switch 13 is connected with the line led out from the input end of the first power supply module 14 to control the switch of the AC220V voltage. The power supply modules are controlled to be on or off through the power switches, so as to realize the control selection of the input voltage of the relay to be tested.

[0043] In the embodiment, the first power supply module 14 is connected with the DC220V relay through the first power switch 11 to supply power. The second power supply module 15 is directly connected with the voltage digital display meter and the resistance digital display meter to supply power, and supplies power for the DC24V relay through the second power switch 12. The line led out from the input end of the first power supply module 14 is connected with the relay base through the third power switch 13 to supply power for the AC220V relay.

[0044] Since the test device is used to measure the coil and contact resistance of the relay, in the embodiment, the switching switch is provided with two kinds, including a power switching switch 9 and a contact switching switch 10. The power switching switch 9 is used to switch the working voltage applied to the coil of the relay, and the contact switching switch 10 is used to switch the logarithm of the coil contact measurement to be tested.

[0045] As Figure 4As shown, the power switch 9 in this embodiment has four voltage test groups, i.e., four positions. The first voltage test group (i.e., the first position) is connected to the second power switch 12, providing DC 24V voltage to power the DC 24V relay. The second voltage test group (i.e., the second position) is connected to the first power switch 11, providing DC 220V voltage to the relay coil to power the DC 220V relay. The third voltage test group (i.e., the third position) is connected to the third power switch 13, providing AC 220V voltage to the relay coil to power the AC 220V relay. The fourth voltage test group (i.e., the fourth position) is connected to the coil resistance meter measurement circuit for directly measuring the relay coil resistance. By rotating the power switch 9, any test group can be selected, but not simultaneously.

[0046] The contact changeover switch 10 has four contact test groups, i.e., four positions. The first contact test group (i.e., the first position) tests the resistance of the first pair of contacts of the relay. Figure 4 Middle contacts 1, 5, and 9 (where 9 is the common terminal); the second contact test group (i.e., the second range) tests the resistance of the second pair of contacts of the relay. Figure 4 The middle contacts are 2, 6, and 10, with 10 being the common terminal; the third contact test group (i.e., the third range) tests the resistance of the third pair of contacts of the relay. Figure 4 The middle contacts are 3, 7, and 11, with 11 being the common terminal; the fourth contact test group (i.e., the fourth range) tests the resistance of the fourth pair of contacts of the relay. Figure 4 The test group consists of three contacts: 4, 8, and 12 (with 12 being the common terminal). By rotating the contact selector switch 10, any test group can be selected, but not all at the same time.

[0047] In this embodiment, a voltage digital display is located at the upper right of the operation panel 2, and includes a DC voltage digital display 5 and an AC voltage digital display 6. The DC voltage digital display 5 is installed in the working circuit of the DC relay coil and is used to measure and display the working voltage applied to the DC relay coil; the AC voltage digital display 6 is installed in the working circuit of the AC relay coil and is used to measure and display the working voltage applied to the AC relay coil. Since the DC relay and AC relay differ only in their working voltage, while their appearance, shape, and technical parameters are basically the same, this device can directly select the power module connected to the relay under test via the power switch 9, and select the test circuit suitable for the relay under test, making operation simple and intuitive.

[0048] In this embodiment, the resistance digital display is located below the voltage digital display on the operation panel 2, and includes a coil resistance digital display 7 and a contact resistance digital display 8. The coil resistance digital display 7 is disposed in the relay coil working circuit and is used to measure and display the relay coil resistance value; the contact resistance digital display 8 is disposed in the relay contact working circuit and is used to measure and display the relay contact resistance value.

[0049] In the embodiment, the connection between each device is realized by a wire, and the connecting wire is arranged inside the box 1 and at the back of the operation panel 2.

[0050] In the embodiment, a power socket 3 is further arranged at the upper left corner of the operation panel 2, which is used for connecting and controlling an external power supply, and a power supply master switch is arranged on the power socket 3 and is connected with the first power module 14 and the second power module 15 respectively, so as to provide 220V alternating current power supply for the first power module 14, the second power module 15 and the input lead wire of the first power module 14.

[0051] In the embodiment, a folding box cover is arranged on the box 1, and a locking structure such as a lock catch is arranged at the corresponding position of the box cover, so as to close the box cover to protect the components in the device when the test is not needed. Alternatively, a handle is arranged on the box cover or the box 1, so as to facilitate the carrying of the tester.

[0052] The working process of the multifunctional digital display relay rapid test device in the embodiment is as follows:

[0053] (1) Power supply is provided to the power socket 3, and the relay to be tested is inserted into the relay base 4;

[0054] (2) The power supply master switch is turned on, and the power supply switching switch 9 is turned to the coil resistance gear, so as to measure the coil resistance of the measured relay;

[0055] (3) The gear of the contact switching switch 10 is rotated, so as to measure the resistance of the normally closed contact of the measured relay under the condition of no electricity;

[0056] (4) According to the relay coil voltage specification, the power supply switching switch 9 is switched to the same voltage gear of the relay coil;

[0057] (5) The power switch with the same voltage specification as the relay coil is turned on, and the gear of the contact switching switch 10 is rotated, so as to measure the resistance of the normally open contact of the measured relay after being closed under the condition of electricity.

[0058] The multifunctional digital display relay rapid test platform disclosed in the utility model can control different power modules to supply power to the relay coil by rotating the power supply switching switch, can switch different voltage levels applied to the coil to measure the coil resistance, can switch different test contacts by rotating the contact switching switch to control the number of coil contact tests, can measure relays with different voltage levels, can quickly measure the coil resistance and contact resistance of the relay through the test device, and can help the operator to judge the running state of the equipment. Through mechanical control, the test result can be ensured to be affected by human factors, and the consistency of the test result can be ensured. Meanwhile, the test device saves PLC processors and other equipment, and can realize the quick switching of voltage and contacts through manual switching, so that the cost of the test device can be greatly reduced.

[0059] The above merely describes preferred embodiments of the present application and is not intended to limit the present application. For those skilled in the art, the present application can have various modifications and changes. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A multifunctional digital display relay rapid test platform, characterized in that, The utility model relates to a relay coil resistance and contact resistance measuring device, including: The box is internally provided with a power module, and an operation panel is arranged on the top of the box; a power switch, a relay base, a switch switch, a voltage digital display meter and a resistance digital display meter are respectively arranged on the operation panel; the power module supplies power for the relay base, the voltage digital display meter and the resistance digital display meter; the power switch controls the output voltage of the power module; the switch switch includes a power switch and a contact switch, and is used for switching the working voltage applied to the relay coil and the contact resistance measurement logarithm; The power module includes a first power module and a second power module; The power switch includes four gears, the first gear is connected with the second power switch, the second gear is connected with the first power switch, the third gear is connected with the third power switch, and the fourth gear is connected with the coil resistance meter measurement loop; The contact switch includes four gears, and is respectively connected with the first to fourth pairs of contacts of the relay, and is used for switching the resistance measurement of different contacts.

2. The multifunctional digital display relay rapid test platform according to claim 1, characterized in that, The first power module is an AC 220V input voltage to DC 220V output voltage power module, and the second power module is an AC 220V input voltage to DC 24V output voltage power module.

3. The multifunctional digital display relay rapid test platform according to claim 1, wherein, The power switch includes a first power switch, a second power switch and a third power switch; the first power switch is connected with the first power module, the second power switch is connected with the second power module, and the third power switch is connected with the lead-out wire of the input end of the first power module.

4. The multifunctional digital display relay rapid test platform according to claim 3, characterized in that, The first power module is connected with the DC 220V relay through the first power switch for power supply; the second power module is directly connected with the voltage digital display meter and the resistance digital display meter for power supply and supplies power for the DC 24V relay through the second power switch; the lead-out wire of the input end of the first power module is connected with the relay base through the third power switch, and the AC 220V relay is supplied with power.

5. The multifunctional digital display relay rapid test platform according to claim 1, characterized in that, The voltage digital display meter includes a DC voltage digital display meter and an AC voltage digital display meter; the DC voltage digital display meter is arranged in the DC relay coil working loop; and the AC voltage digital display meter is arranged in the AC relay coil working loop.

6. The multifunctional digital display relay rapid test platform according to claim 1, wherein, The resistance digital display meter includes a coil resistance digital display meter and a contact resistance digital display meter; the coil resistance digital display meter is arranged in the relay coil working loop, and the contact resistance digital display meter is arranged in the relay contact working loop.

7. The multifunctional digital display relay rapid test platform according to claim 1, characterized in that, A power socket is further arranged at the upper left corner of the operation panel, a power master switch is arranged on the power socket, and the power master switch is connected with the power module.

8. The multifunctional digital display relay rapid test platform according to claim 1, characterized in that, A folding box cover is arranged on the box.

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