A kind of load detection device

Abstract

The utility model discloses a kind of load detection devices, specifically related to electrical equipment detection technical field, its technical key points are: power conversion module, the power conversion module is connected with control module, for carrying out voltage conversion to external input power supply, and power supply for load detection device;Control module, the control module is connected with detection connection module and power supply conversion unit, for controlling the start-stop of load detection device;Detection connection module, the detection connection module is connected with control module, adjustment module and the switch equipment to be detected, for carrying out parameter detection to external equipment;Adjustment module, the adjustment module is connected with detection connection module, for adjusting the load test condition of switch equipment to be detected.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment testing technology, specifically to a load testing device. Background Technology

[0002] In the production process of rocker switches and push-button switches, load testing is a key step in ensuring product quality.

[0003] Existing load testing devices are not convenient enough for real-time monitoring and adjustment of testing parameters during the testing process, and cannot be optimized in a timely manner according to the actual situation of the product, resulting in low testing efficiency and difficulty in meeting the testing needs of large-scale production.

[0004] Therefore, the present invention aims to provide a load-bearing detection device to solve the aforementioned problems. Utility Model Content

[0005] The technical problem this invention aims to solve is that existing load testing devices lack convenient real-time monitoring and adjustment of testing parameters during the testing process, and cannot be optimized in a timely manner according to the actual situation of the product. The purpose is to provide a load testing device that supplies power to the device via a power conversion module, controls its start and stop via a control module, connects to the switchgear under test via a testing connection module, and allows the device to switch to different current loops via a third control switch. By changing the number of load resistors connected to the two load adjustment units, the load size of the switchgear connected to the two testing connection units can be adjusted, enabling the output current of the testing device to switch freely between 2A and 4A, meeting the load testing requirements of different products and detecting the effective contact of the product under different loads.

[0006] This utility model is achieved through the following technical solution: A load-bearing detection device, the load-bearing detection device comprising: A power conversion module, which is connected to the control module, is used to convert the voltage of the external input power supply and supply power to the load detection device; The control module, which is connected to the detection connection module and the power supply conversion unit, is used to control the start and stop of the load detection device; A detection connection module is connected to a control module, an adjustment module, and a switch device to be tested, and is used to detect parameters of external devices. An adjustment module, which is connected to the detection connection module, is used to adjust the load test conditions of the switchgear under test.

[0007] Furthermore, The first connection terminal of the power conversion module is connected to the first connection terminal of the control module, and the second connection terminal of the power conversion module is connected to the second connection terminal of the control module; The first connection terminal of the control module is also connected to the first connection terminal of the detection connection module, and the third connection terminal of the control module is connected to the second connection terminal of the detection connection module. The first connection end of the detection connection module is also connected to the first connection end of the adjustment module, the third connection end of the detection connection module is connected to the second connection end of the adjustment module, the fourth connection end of the detection connection module is connected to the third connection end of the adjustment module, the fifth connection end of the detection connection module is connected to the fourth connection end of the adjustment module, and the sixth connection end of the detection connection module is connected to the fifth connection end of the adjustment module.

[0008] Furthermore, a digital voltmeter is connected between the first and second connection terminals of the power conversion module.

[0009] Furthermore, the power conversion module includes a first control switch and a switching power supply. The first connection terminal of the power input terminal is connected to the first connection terminal of the first control switch, the second connection terminal of the power input terminal is connected to the second connection terminal of the control module, the second connection terminal of the first control switch is connected to the first connection terminal of the switching power supply, and the second connection terminal of the switching power supply is connected to the first connection terminal of the control module.

[0010] Furthermore, the control module includes a first relay and a second control switch. The first connection terminal of the first relay is connected to both the first connection terminal of the power supply conversion module and the first connection terminal of the detection connection module. The second connection terminal of the first relay is connected to the first connection terminal of the second control switch. The second connection terminal of the second control switch is connected to the second connection terminal of the power supply conversion module. The third connection terminal of the first relay is connected to the second connection terminal of the detection connection module.

[0011] Furthermore, The detection connection module includes a first detection connection unit and a second detection connection unit; The first connection end of the first detection connection unit is connected to the second connection end of the adjustment module; the second connection end of the first detection connection unit is connected to the first connection end of the control module and the first connection end of the adjustment module; the third connection end of the first detection connection unit is connected to the third connection end of the control module; and the fourth connection end of the first detection connection unit is connected to the third connection end of the adjustment module. The first connection end of the second detection connection unit is connected to the fifth connection end of the adjustment module, the second connection end of the second detection connection unit is connected to the third connection end of the control module, and the third connection end of the second detection connection unit is connected to the fourth connection end of the adjustment module.

[0012] Furthermore, the adjustment module includes a first load adjustment unit, a second load adjustment unit, a third control switch, a first digital ammeter, and a second digital ammeter; The first connection terminal of the first load regulating unit is connected to the third connection terminal of the detection connection module, and the second connection terminal of the first load regulating unit is connected to the fourth connection terminal of the detection connection module; the third connection terminal of the first load regulating unit is connected to the first connection terminal of the first digital ammeter. The first connection terminal of the second load regulating unit is connected to the fifth connection terminal of the detection connection module, the second connection terminal of the second load regulating unit is connected to the sixth connection terminal of the detection connection module, and the third connection terminal of the second load regulating unit is connected to the first connection terminal of the second digital ammeter. The second connection terminal of the first digital ammeter is connected to the second connection terminal of the second digital ammeter. The first connection terminal of the third control switch is connected to the first connection terminal of the detection connection module, and the second connection terminal of the third control switch is connected to the fourth connection terminal of the first load adjustment unit and the fourth connection terminal of the second load adjustment unit. The fifth connection terminal of the first load regulating unit and the fifth connection terminal of the second load regulating unit are both connected between the second connection terminal of the first digital ammeter and the second connection terminal of the second digital ammeter.

[0013] Furthermore, the first detection connection unit includes a first connector, a first millivoltmeter, and a second millivoltmeter. The first pin of the first connector is connected to the second connection terminal of the adjustment module, the second pin of the first connector is connected to the first connection terminal of the first millivoltmeter, the third pin of the first connector is connected to the first connection terminal of the control module, the fourth pin of the first connector is grounded, the fifth pin of the first connector is connected to the third connection terminal of the control module, the sixth pin of the first connector is connected to the second connection terminal of the first millivoltmeter and the first connection terminal of the second millivoltmeter, the seventh pin of the first connector is connected to the third connection terminal of the adjustment module, and the eighth pin of the first connector is connected to the second connection terminal of the second millivoltmeter.

[0014] Furthermore, the second detection connection unit includes a second connector, a third millivoltmeter, and a fourth millivoltmeter. The first pin of the second connector is connected to the fifth connection terminal of the adjustment module, the second pin of the second connector is connected to the first connection terminal of the third millivoltmeter, the fifth pin of the second connector is connected to the third connection terminal of the control module, the sixth pin of the second connector is connected to the second connection terminal of the third millivoltmeter and the first connection terminal of the fourth millivoltmeter, the seventh pin of the second connector is connected to the fourth connection terminal of the adjustment module, and the eighth pin of the second connector is connected to the second connection terminal of the fourth millivoltmeter.

[0015] Furthermore, the first load regulating unit includes a first load resistor, a second load resistor, a third load resistor, a fourth load resistor, and a second relay; The second load regulating unit includes a fifth load resistor, a sixth load resistor, a seventh load resistor, an eighth load resistor, and a third relay; The first connection terminals of the first load resistor and the third load resistor are both connected to the third connection terminal of the detection connection module; the first connection terminals of the second load resistor and the fourth load resistor are both connected to the fourth connection terminal of the detection connection module; the second connection terminal of the third load resistor is connected to the first connection terminal of the second relay; the second connection terminal of the fourth load resistor is connected to the second connection terminal of the second relay; the second connection terminals of the first load resistor, the second load resistor, and the third connection terminal of the second relay are all connected to the first connection terminal of the first digital ammeter. The first connection terminals of the fifth load resistor and the eighth load resistor are both connected to the sixth connection terminal of the detection connection module; the first connection terminals of the sixth load resistor and the seventh load resistor are both connected to the fifth connection terminal of the detection connection module; the second connection terminal of the fifth load resistor is connected to the first connection terminal of the third relay; the second connection terminal of the sixth load resistor is connected to the second connection terminal of the third relay; the second connection terminals of the seventh load resistor, the eighth load resistor, and the third relay are all connected to the first connection terminal of the second digital ammeter. The fourth connection terminal of the second relay and the fourth connection terminal of the third relay are both connected to the second connection terminal of the third control switch; The fifth connection terminal of the second relay and the fifth connection terminal of the third relay are both connected between the second connection terminal of the first digital ammeter and the second connection terminal of the second digital ammeter.

[0016] Compared with the prior art, this utility model has the following advantages and beneficial effects: In this invention, a power conversion module supplies power to the load testing device, a control module controls the start and stop of the load testing device, a testing connection module connects it to the switch device under test, and a third control switch adjusts the main body of the testing device to switch to different current loops. By changing the number of load resistors connected to the two load adjustment units, the load size of the switch devices under test connected to the two testing connection units is adjusted, so that the output current of the testing device can be freely switched between 2A and 4A to meet the load testing requirements of different products and to detect the effective contact of the product under different loads. Attached Figure Description

[0017] To more clearly illustrate the technical solutions of the exemplary embodiments of this utility model, the drawings used in the embodiments will be briefly described below. It should be understood that the following drawings only show some embodiments of this utility model and should not be considered as a limitation of the scope. For those skilled in the art, other related drawings can be obtained based on these drawings without creative effort. In the drawings: Figure 1 This is a schematic diagram of the module connection of a load-bearing detection device in this embodiment; Figure 2 This is a circuit connection diagram of a load-bearing detection device in this embodiment; Figure 3 This is a partial circuit connection diagram of the first detection connection unit in this embodiment; Figure 4 This is a partial circuit connection diagram of the second detection connection unit in this embodiment; Figure 5 This is a partial circuit connection diagram of the first load adjustment unit in this embodiment; Figure 6 This is a partial circuit connection diagram of the second load adjustment unit in this embodiment.

[0018] The attached diagram shows the markings and corresponding component names: 1. Power supply conversion module; 101. Power input terminal; 102. First control switch; 103. Switching power supply; 104. Digital voltmeter; 2. Control module; 201. First relay; 202. Second control switch; 3. Detection connection module; 301. First detection connection unit; 3011. First connector; 3012. First millivoltmeter; 3013. Second millivoltmeter; 302. Second detection connection unit; 3021. Second connector; 3022. Third millivoltmeter; 3023. Fourth millivoltmeter; 4. Adjustment Modules; 401, First load regulating unit; 4011, First load resistor; 4012, Second load resistor; 4013, Third load resistor; 4014, Fourth load resistor; 4015, Second relay; 402, Second load regulating unit; 4021, Fifth load resistor; 4022, Sixth load resistor; 4023, Seventh load resistor; 4024, Eighth load resistor; 4025, Third relay; 403, Third control switch; 404, First digital ammeter; 405, Second digital ammeter. Detailed Implementation

[0019] The exemplary embodiments of this disclosure are described below with reference to the accompanying drawings, including various details of the embodiments to aid understanding, and should be considered merely exemplary. Therefore, those skilled in the art will recognize that various changes and modifications can be made to the embodiments described herein without departing from the scope of this disclosure. Similarly, for clarity and brevity, descriptions of well-known functions and structures are omitted in the following description.

[0020] In this disclosure, unless otherwise stated, the use of terms such as "first," "second," etc., to describe various elements is not intended to limit the positional, temporal, or importance relationships of these elements; such terms are merely used to distinguish one element from another. In some examples, the first element and the second element may refer to the same instance of that element, while in other cases, based on the context, they may refer to different instances.

[0021] The terminology used in the description of the various examples in this disclosure is for the purpose of describing particular examples only and is not intended to be limiting. Unless the context explicitly indicates otherwise, an element may be one or more unless the number of elements is specifically limited. Furthermore, the term "and / or" as used in this disclosure covers any one of the listed items and all possible combinations thereof.

[0022] Example See Figure 1 , Figure 1 A schematic diagram of the module connection of a load-bearing detection device is shown, wherein the load-bearing detection device includes: Power conversion module 1, which is connected to control module 2, is used to convert the voltage of external input power and supply power to the load detection device; It should be noted that in this embodiment, the power conversion module 1 is connected to the control module 2, and then the control module 2 is connected to the detection connection module 3, and the detection connection module 3 is connected to the adjustment module 4, thereby achieving the purpose of powering the entire load detection device.

[0023] Control module 2 is connected to detection connection module 3 and power conversion unit, and is used to control the start and stop of the load detection device; The detection connection module 3 is connected to the control module 2, the adjustment module 4 and the switch device to be tested, and is used to detect parameters of the external device. Adjustment module 4 is connected to detection connection module 3 and is used to adjust the load test conditions of the switchgear under test.

[0024] Furthermore, the first connection terminal of the power conversion module 1 is connected to the first connection terminal of the control module 2, and the second connection terminal of the power conversion module 1 is connected to the second connection terminal of the control module 2; the first connection terminal of the control module 2 is also connected to the first connection terminal of the detection connection module 3, and the third connection terminal of the control module 2 is connected to the second connection terminal of the detection connection module 3; the first connection terminal of the detection connection module 3 is also connected to the first connection terminal of the adjustment module 4, the third connection terminal of the detection connection module 3 is connected to the second connection terminal of the adjustment module 4, the fourth connection terminal of the detection connection module 3 is connected to the third connection terminal of the adjustment module 4, the fifth connection terminal of the detection connection module 3 is connected to the fourth connection terminal of the adjustment module 4, and the sixth connection terminal of the detection connection module 3 is connected to the fifth connection terminal of the adjustment module 4; at the same time, a digital voltmeter 104 is also connected between the first connection terminal and the second connection terminal of the power conversion module 1.

[0025] Specifically, in this embodiment, the load testing device is powered by the power conversion module 1, the load testing device is started and stopped by the control module 2, and the device is connected to the switch under test by the detection connection module 3. At the same time, the load size of the switch under test is adjusted by the adjustment module 4, thereby realizing the effectiveness test of the switch under test under different loads.

[0026] Meanwhile, in this embodiment, see Figure 2 , Figure 2A circuit connection diagram of the load detection device is shown. The power conversion module 1 includes a first control switch 102 and a switching power supply 103. The first connection terminal of the power input terminal 101 is connected to the first connection terminal of the first control switch 102. The second connection terminal of the power input terminal 101 is connected to the second connection terminal of the control module 2. The second connection terminal of the first control switch 102 is connected to the first connection terminal of the switching power supply 103. The second connection terminal of the switching power supply 103 is connected to the first connection terminal of the control module 2. It should be noted that in this embodiment, the second connection terminal of the switching power supply 103 serves as the first connection terminal of the power conversion module 1, and the second connection terminal of the power input terminal 101 serves as the second connection terminal of the power conversion module 1. In addition, this embodiment also includes a meter power supply for supplying power to the digital voltmeter 104, the digital ammeter, and the millivoltmeter. This technology is a conventional technique in the field and will not be described in detail here.

[0027] Specifically, in this embodiment, the power input terminal 101 is connected to an external power supply device for inputting a power supply current source; at the same time, the first control switch 102 is used to control the start and stop of the power conversion module 1, and the voltage of the input current source is easily converted by the switching power supply 103, converting 220V AC power into 24V DC power, to prevent deviations in the detection data caused by cross-current.

[0028] The control module 2 includes a first relay 201 and a second control switch 202. The first connection terminal of the first relay 201 is connected to both the first connection terminal of the power conversion module 1 and the first connection terminal of the detection connection module 3. The second connection terminal of the first relay 201 is connected to the first connection terminal of the second control switch 202. The second connection terminal of the second control switch 202 is connected to the second connection terminal of the power conversion module 1. The third connection terminal of the first relay 201 is connected to the second connection terminal of the detection connection module 3. It should be noted that, in this embodiment, the first connection terminal of the first relay 201 serves as the first connection terminal of the control module 2; the second connection terminal of the second control switch 202 serves as the second connection terminal of the control module 2; the third connection terminal of the first relay 201 serves as the third connection terminal of the control module 2; the first connection terminal of the first relay 201 is composed of one of the connection terminals of the controller in the first relay 201 and the moving terminal on the switch side, and the third connection terminal of the first relay 201 is composed of the stationary terminal on the switch side.

[0029] It should also be noted that the second control switch 202 is suitable for situations where the switch is not convenient for gear shifting. By continuously closing the second control switch 202, multiple sets of test data can be obtained, and the contact effectiveness of the switch can be obtained by averaging the data.

[0030] Specifically, in this embodiment, the second control switch 202 facilitates the control of the coil circuit of the controller in the first relay 201, thereby controlling the on / off state of the first relay 201; the first relay 201 facilitates the control of current flowing into the detection connection module 3.

[0031] The detection connection module 3 includes a first detection connection unit 301 and a second detection connection unit 302; the first connection end of the first detection connection unit 301 is connected to the second connection end of the adjustment module 4, and the second connection end of the first detection connection unit 301 is connected to the first connection end of the control module 2 and the first connection end of the adjustment module 4; the third connection end of the first detection connection unit 301 is connected to the third connection end of the control module 2; the fourth connection end of the first detection connection unit 301 is connected to the third connection end of the adjustment module 4; the first connection end of the second detection connection unit 302 is connected to the fifth connection end of the adjustment module 4, the second connection end of the second detection connection unit 302 is connected to the third connection end of the control module 2, and the third connection end of the second detection connection unit 302 is connected to the fourth connection end of the adjustment module 4. See Figure 3 The first detection connection unit 301 includes a first connector 3011, a first millivoltmeter 3012, and a second millivoltmeter 3013. The first pin of the first connector 3011 is connected to the second connection terminal of the adjustment module 4. The second pin of the first connector 3011 is connected to the first connection terminal of the first millivoltmeter 3012. The third pin of the first connector 3011 is connected to the first connection terminal of the control module 2. The fourth pin of the first connector 3011 is grounded. The fifth pin of the first connector 3011 is connected to the third connection terminal of the control module 2. The sixth pin of the first connector 3011 is connected to the second connection terminal of the first millivoltmeter 3012 and the first connection terminal of the second millivoltmeter 3013. The seventh pin of the first connector 3011 is connected to the third connection terminal of the adjustment module 4. The eighth pin of the first connector 3011 is connected to the second connection terminal of the second millivoltmeter 3013. See Figure 4 The second detection connection unit 302 includes a second connector 3021, a third millivoltmeter 3022, and a fourth millivoltmeter 3023. The first pin of the second connector 3021 is connected to the fifth connection terminal of the adjustment module 4. The second pin of the second connector 3021 is connected to the first connection terminal of the third millivoltmeter 3022. The fifth pin of the second connector 3021 is connected to the third connection terminal of the control module 2. The sixth pin of the second connector 3021 is connected to the second connection terminal of the third millivoltmeter 3022 and the first connection terminal of the fourth millivoltmeter 3023. The seventh pin of the second connector 3021 is connected to the fourth connection terminal of the adjustment module 4. The eighth pin of the second connector 3021 is connected to the second connection terminal of the fourth millivoltmeter 3023. It should be noted that, in this embodiment, the first pin of the first connector 3011 serves as the first connection terminal of the first detection connection unit 301 and simultaneously as the third connection terminal of the detection connection module 3; the third pin of the first connector 3011 serves as the second connection terminal of the first detection connection unit 301 and simultaneously as the first connection terminal of the detection connection module 3; the fifth pin of the first connector 3011 serves as the third connection terminal of the first detection connection unit 301, and the fifth pin of the second connector 3021 serves as the second connection terminal of the second detection connection unit 302, and the first connector 3011... The fifth pin of 011 and the fifth pin of the second connector 3021 also serve as the second connection terminal of the detection connection module 3; the seventh pin of the first connector 3011 serves as the fourth connection terminal of the first detection connection unit 301 and also detects the fourth connection terminal of the connection module 3; the first pin of the second connector 3021 serves as the first connection terminal of the second detection connection unit 302 and also detects the sixth connection terminal of the connection module 3; the seventh pin of the second connector 3021 serves as the third connection terminal of the second detection connection unit 302 and also detects the fifth connection terminal of the connection module 3.

[0032] It should also be noted that in this embodiment, the two connectors are eight-wire connectors, but other connectors can be used in other embodiments, and no further restrictions are imposed here; at the same time, the parameter monitoring consists of three ammeters and four millivoltmeters, which can monitor multiple sets of data simultaneously; the ammeters monitor the current flowing through the switch device under test in real time, while the millivoltmeters monitor the voltage drop at the moving contacts, brush plates, and other contact points of the switch device under test in real time.

[0033] Specifically, in this embodiment, two detection connection units are provided. In other embodiments, three, four, five, or other numbers of detection connection units may be used, and no further restrictions are imposed here. At the same time, the two detection connection units are connected to the switch device under test through the connectors in the two detection connection units, which can be compatible with single-pole rocker switches and double-pole rocker switches. In addition, each detection connection unit can monitor two sets of parameters, which greatly improves the utilization efficiency of the load detection device.

[0034] The adjustment module 4 includes a first load adjustment unit 401, a second load adjustment unit 402, a third control switch 403, a first digital ammeter 404, and a second digital ammeter 405. The first connection terminal of the first load adjustment unit 401 is connected to the third connection terminal of the detection connection module 3, and the second connection terminal of the first load adjustment unit 401 is connected to the fourth connection terminal of the detection connection module 3. The third connection terminal of the first load adjustment unit 401 is connected to the first connection terminal of the first digital ammeter 404. The first connection terminal of the second load adjustment unit 402 is connected to the fifth connection terminal of the detection connection module 3, and the second connection terminal of the second load adjustment unit 402 is connected to the sixth connection terminal of the detection connection module 3. Connections are made as follows: the third connection terminal of the second load regulating unit 402 is connected to the first connection terminal of the second digital ammeter 405; the second connection terminal of the first digital ammeter 404 is connected to the second connection terminal of the second digital ammeter 405; the first connection terminal of the third control switch 403 is connected to the first connection terminal of the detection connection module 3; the second connection terminal of the third control unit is connected to the fourth connection terminal of the first load regulating unit 401 and the fourth connection terminal of the second load regulating unit 402; the fifth connection terminal of the first load regulating unit 401 and the fifth connection terminal of the second load regulating unit 402 are both connected between the second connection terminal of the first digital ammeter 404 and the second connection terminal of the second digital ammeter 405. See Figure 5 The first load regulating unit 401 includes a first load resistor 4011, a second load resistor 4012, a third load resistor 4013, a fourth load resistor 4014, and a second relay 4015; see also Figure 6 The second load adjustment unit 402 includes a fifth load resistor 4021, a sixth load resistor 4022, a seventh load resistor 4023, an eighth load resistor 4024, and a third relay 4025. The first connection terminals of the first load resistor 4011 and the third load resistor 4013 are both connected to the third connection terminal of the detection connection module 3; the first connection terminals of the second load resistor 4012 and the fourth load resistor 4014 are both connected to the fourth connection terminal of the detection connection module 3; the second connection terminal of the third load resistor 4013 is connected to the first connection terminal of the second relay 4015; the second connection terminal of the fourth load resistor 4014 is connected to the second connection terminal of the second relay 4015; the second connection terminals of the first load resistor 4011, the second load resistor 4012, and the third connection terminal of the second relay 4015 are all connected to the first connection terminal of the first digital ammeter 404. The first connection terminals of the fifth load resistor 4021 and the eighth load resistor 4024 are both connected to the sixth connection terminal of the detection connection module 3. The first connection terminals of the sixth load resistor 4022 and the seventh load resistor 4023 are both connected to the fifth connection terminal of the detection connection module 3. The second connection terminal of the fifth load resistor 4021 is connected to the first connection terminal of the third relay 4025. The second connection terminal of the sixth load resistor 4022 is connected to the second connection terminal of the third relay 4025. The second connection terminals of the seventh load resistor 4023, the eighth load resistor 4024, and the third relay 4025 are all connected to the first connection terminal of the second digital ammeter 405. The fourth connection terminal of the second relay 4015 and the fourth connection terminal of the third relay 4025 are both connected to the second connection terminal of the third control switch 403. The fifth connection terminal of the second relay 4015 and the fifth connection terminal of the third relay 4025 are both connected between the second connection terminal of the first digital ammeter 404 and the second connection terminal of the second digital ammeter 405.

[0035] It should be noted that, in this embodiment, the first connection terminal of the first load resistor 4011 and the first connection terminal of the third load resistor 4013 together serve as the second connection terminal of the adjustment module 4, the first connection terminal of the second load resistor 4012 and the first connection terminal of the fourth load resistor 4014 together serve as the third connection terminal of the adjustment module 4, the first connection terminal of the third control switch 403 serves as the first connection terminal of the adjustment module 4, the first connection terminal of the fifth load resistor 4021 and the first connection terminal of the eighth load resistor 4024 together serve as the fifth connection terminal of the adjustment module 4, and the first connection terminal of the sixth load resistor 4022 and the first connection terminal of the seventh load resistor 4023 together serve as the fourth connection terminal of the adjustment module 4.

[0036] It should also be noted that in this embodiment, when the third control switch 403 is closed, the coils of the second relay 4015 and the third relay 4025 are energized, and the internal switches of the second relay 4015 and the third relay 4025 are engaged, connecting a load resistor of the same size in parallel with the load resistor in the original circuit. This reduces the overall circuit resistance and increases the original circuit current from 2A to 4A. By observing the voltage drop change of the moving contact connected to the circuit inside the switch under different current intensities, the contact effectiveness of the detection product under different loads can be determined.

[0037] Specifically, in this embodiment, the main body of the detection device is switched to different current loops by adjusting the third control switch 403, changing the number of load resistors connected to the two load adjustment units, and adjusting the load size of the switch devices to be tested connected to the two detection connection units respectively, so that the output current of the detection device can be switched at will between 2A and 4A to meet the load testing requirements of different products, so as to detect the effective contact of the product under different loads.

[0038] The specific embodiments described above further illustrate the purpose, technical solution, and beneficial effects of this utility model. It should be understood that the above description is only a specific embodiment of this utility model and is not intended to limit the scope of protection of this utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this utility model should be included within the scope of protection of this utility model.

Claims

1. A load-bearing detection device, characterized in that, The load-bearing detection device includes: A power conversion module, which is connected to the control module, is used to convert the voltage of the external input power supply and supply power to the load detection device; The control module, which is connected to the detection connection module and the power supply conversion unit, is used to control the start and stop of the load detection device; A detection connection module is connected to a control module, an adjustment module, and a switch device to be tested, and is used to detect parameters of external devices. An adjustment module, which is connected to the detection connection module, is used to adjust the load test conditions of the switchgear under test.

2. The load-bearing detection device according to claim 1, characterized in that, The first connection terminal of the power conversion module is connected to the first connection terminal of the control module, and the second connection terminal of the power conversion module is connected to the second connection terminal of the control module. The first connection terminal of the control module is also connected to the first connection terminal of the detection connection module, and the third connection terminal of the control module is connected to the second connection terminal of the detection connection module. The first connection end of the detection connection module is also connected to the first connection end of the adjustment module, the third connection end of the detection connection module is connected to the second connection end of the adjustment module, the fourth connection end of the detection connection module is connected to the third connection end of the adjustment module, the fifth connection end of the detection connection module is connected to the fourth connection end of the adjustment module, and the sixth connection end of the detection connection module is connected to the fifth connection end of the adjustment module.

3. The load-bearing detection device according to claim 2, characterized in that, A digital voltmeter is also connected between the first and second connection terminals of the power conversion module.

4. The load-bearing detection device according to claim 2, characterized in that, The power conversion module includes a first control switch and a switching power supply. The first connection terminal of the power input terminal is connected to the first connection terminal of the first control switch, the second connection terminal of the power input terminal is connected to the second connection terminal of the control module, the second connection terminal of the first control switch is connected to the first connection terminal of the switching power supply, and the second connection terminal of the switching power supply is connected to the first connection terminal of the control module.

5. The load-bearing detection device according to claim 2, characterized in that, The control module includes a first relay and a second control switch. The first connection terminal of the first relay is connected to both the first connection terminal of the power conversion module and the first connection terminal of the detection connection module. The second connection terminal of the first relay is connected to the first connection terminal of the second control switch. The second connection terminal of the second control switch is connected to the second connection terminal of the power conversion module. The third connection terminal of the first relay is connected to the second connection terminal of the detection connection module.

6. The load-bearing detection device according to claim 2, characterized in that, The detection connection module includes a first detection connection unit and a second detection connection unit; The first connection end of the first detection connection unit is connected to the second connection end of the adjustment module; the second connection end of the first detection connection unit is connected to the first connection end of the control module and the first connection end of the adjustment module; the third connection end of the first detection connection unit is connected to the third connection end of the control module; and the fourth connection end of the first detection connection unit is connected to the third connection end of the adjustment module. The first connection end of the second detection connection unit is connected to the fifth connection end of the adjustment module, the second connection end of the second detection connection unit is connected to the third connection end of the control module, and the third connection end of the second detection connection unit is connected to the fourth connection end of the adjustment module.

7. The load-bearing detection device according to claim 2, characterized in that, The adjustment module includes a first load adjustment unit, a second load adjustment unit, a third control switch, a first digital ammeter, and a second digital ammeter; The first connection terminal of the first load regulating unit is connected to the third connection terminal of the detection connection module, and the second connection terminal of the first load regulating unit is connected to the fourth connection terminal of the detection connection module; the third connection terminal of the first load regulating unit is connected to the first connection terminal of the first digital ammeter. The first connection terminal of the second load regulating unit is connected to the fifth connection terminal of the detection connection module, the second connection terminal of the second load regulating unit is connected to the sixth connection terminal of the detection connection module, and the third connection terminal of the second load regulating unit is connected to the first connection terminal of the second digital ammeter. The second connection terminal of the first digital ammeter is connected to the second connection terminal of the second digital ammeter. The first connection terminal of the third control switch is connected to the first connection terminal of the detection connection module, and the second connection terminal of the third control switch is connected to the fourth connection terminal of the first load adjustment unit and the fourth connection terminal of the second load adjustment unit. The fifth connection terminal of the first load regulating unit and the fifth connection terminal of the second load regulating unit are both connected between the second connection terminal of the first digital ammeter and the second connection terminal of the second digital ammeter.

8. The load-bearing detection device according to claim 6, characterized in that, The first detection connection unit includes a first connector, a first millivoltmeter, and a second millivoltmeter. The first pin of the first connector is connected to the second connection terminal of the adjustment module, the second pin of the first connector is connected to the first connection terminal of the first millivoltmeter, the third pin of the first connector is connected to the first connection terminal of the control module, the fourth pin of the first connector is grounded, the fifth pin of the first connector is connected to the third connection terminal of the control module, the sixth pin of the first connector is connected to the second connection terminal of the first millivoltmeter and the first connection terminal of the second millivoltmeter, the seventh pin of the first connector is connected to the third connection terminal of the adjustment module, and the eighth pin of the first connector is connected to the second connection terminal of the second millivoltmeter.

9. A load-bearing detection device according to claim 6, characterized in that, The second detection connection unit includes a second connector, a third millivoltmeter, and a fourth millivoltmeter. The first pin of the second connector is connected to the fifth connection terminal of the adjustment module, the second pin of the second connector is connected to the first connection terminal of the third millivoltmeter, the fifth pin of the second connector is connected to the third connection terminal of the control module, the sixth pin of the second connector is connected to the second connection terminal of the third millivoltmeter and the first connection terminal of the fourth millivoltmeter, the seventh pin of the second connector is connected to the fourth connection terminal of the adjustment module, and the eighth pin of the second connector is connected to the second connection terminal of the fourth millivoltmeter.

10. A load-bearing detection device according to claim 7, characterized in that, The first load regulating unit includes a first load resistor, a second load resistor, a third load resistor, a fourth load resistor, and a second relay; The second load regulating unit includes a fifth load resistor, a sixth load resistor, a seventh load resistor, an eighth load resistor, and a third relay; The first connection terminals of the first load resistor and the third load resistor are both connected to the third connection terminal of the detection connection module; the first connection terminals of the second load resistor and the fourth load resistor are both connected to the fourth connection terminal of the detection connection module; the second connection terminal of the third load resistor is connected to the first connection terminal of the second relay; the second connection terminal of the fourth load resistor is connected to the second connection terminal of the second relay; the second connection terminals of the first load resistor, the second load resistor, and the third connection terminal of the second relay are all connected to the first connection terminal of the first digital ammeter. The first connection terminals of the fifth load resistor and the eighth load resistor are both connected to the sixth connection terminal of the detection connection module; the first connection terminals of the sixth load resistor and the seventh load resistor are both connected to the fifth connection terminal of the detection connection module; the second connection terminal of the fifth load resistor is connected to the first connection terminal of the third relay; the second connection terminal of the sixth load resistor is connected to the second connection terminal of the third relay; the second connection terminals of the seventh load resistor, the eighth load resistor, and the third relay are all connected to the first connection terminal of the second digital ammeter. The fourth connection terminal of the second relay and the fourth connection terminal of the third relay are both connected to the second connection terminal of the third control switch; The fifth connection terminal of the second relay and the fifth connection terminal of the third relay are both connected between the second connection terminal of the first digital ammeter and the second connection terminal of the second digital ammeter.

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