CN212207637U - Testing device for rail vehicle electrical connector - Google Patents
Testing device for rail vehicle electrical connector Download PDFInfo
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- CN212207637U CN212207637U CN202020807951.0U CN202020807951U CN212207637U CN 212207637 U CN212207637 U CN 212207637U CN 202020807951 U CN202020807951 U CN 202020807951U CN 212207637 U CN212207637 U CN 212207637U
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Abstract
The present disclosure proposes a testing device for a rail vehicle electrical connector, comprising: the device comprises a switch device, a testing tool and at least one pair of transition bases, wherein the transition bases are used for being connected with two ends of an electric connector of the rail vehicle to be tested respectively; the transition base is led out of a connector core wire to be electrically connected to the corresponding switch devices; the switch device and the test tool are connected in series in a test loop formed by the switch device and the electrical connector so as to conduct insulation test on the electrical connector of the rail vehicle to be tested. When the whole testing device is used, the electric connector is only required to be inserted into the transition base for testing, and the problems of missing detection, error detection and quality hidden danger of damaging core wire pins in manual and direct testing of the electric connector are avoided.
Description
Technical Field
The present disclosure belongs to the field of testing technology, and particularly relates to a testing device for a rail vehicle electrical connector.
Background
The statements in this section merely provide background information related to the present disclosure and may not necessarily constitute prior art.
The butt joint of hard line signal between different carriages of rail vehicle adopts the electrical connector, take 8 marshalling EMUs as an example, every car is total 21 connectors, above-mentioned electrical connector if there is the conduction or insulating fault in the in-process of using, need overhaul, a large amount of rail vehicle will lead to having a large amount of electrical connectors that need the maintenance when returning the factory to overhaul. A prior art electrical connector configuration for a railway vehicle is shown in figure 6.
In order to ensure that the insulating property of the connector is good, the core wires and the core wires of the electric connector and the core wires and the shell are subjected to an insulation test by using a pressurizing device to pressurize DC500V, and the insulation resistance is tested, wherein when the electric connector of the current railway vehicle is overhauled, the insulation test of the electric connector of the motor train unit is a manual test: two meter pens of the megger are connected between two core wires of the connector or between the core wire and the shell, the gear of the megger selects 500V 100M omega to pressurize, the insulation resistance value of the instrument panel is checked, the test value is compared with the standard value, and whether the insulation is good or not is judged. Each 8 marshalling EMUs total 21 car end electrical connectors, include connectors such as broadcasting fireworks, movie & TV, video monitor system, the whole test process needs 3 personnel to go on simultaneously, needs to consume 2.5 hours totally.
Such tests have the following problems:
1. the electric connector is small in size, the core wires are dense, quality hidden dangers of missing detection and error detection easily exist in manual testing, testing quality is not high, and vehicle operation safety is affected.
2. The electrical connector test is applied with DC500V, and if the operation is improper, the two hands of a person contact the two pens at the same time, which can cause electric shock and personal safety accidents.
3. The electrical connector has more core wires, so that the test times are increased, if the 16-core connector is tested one by one, the time and the labor are wasted, the labor cost is high, and the defect of damaging the core wire pins also exists.
SUMMERY OF THE UTILITY MODEL
In order to overcome the deficiencies of the prior art, the present disclosure provides a testing device for a rail vehicle electrical connector, which utilizes the testing device to achieve automated testing.
In order to achieve the above object, one or more embodiments of the present disclosure provide the following technical solutions:
in one aspect, a testing device for a rail vehicle electrical connector is disclosed, comprising:
the device comprises a switch device, a testing tool and at least one pair of transition bases, wherein the transition bases are used for being connected with two ends of an electric connector of the rail vehicle to be tested respectively;
the transition base is provided with a plurality of transition devices, and core wires of the transition devices are led out from the transition base and are electrically connected to the corresponding switch devices;
the switch device and the test tool are connected in series in a test loop formed by the switch device and the electrical connector so as to conduct insulation test on the electrical connector of the rail vehicle to be tested.
The controller is connected to the switch device through the driving circuit and is configured to control the on-off state of the switch device through the driving circuit so as to control the on-off state of the test loop.
According to the further technical scheme, the device further comprises a display device and a control switch, wherein the display device and the control switch are respectively connected with the controller so as to control the work of the controller, and the display device displays the test items.
The technical scheme is that the power supply device is a rechargeable power supply or a power supply device connected with an external power supply.
According to a further technical scheme, the number of the switch devices is more than or equal to that of the transition bases, and the number of the transition bases is twice that of the electrical connectors to be tested.
According to a further technical scheme, the two groups of the switch devices are respectively a first switch device group and a second switch device group, wherein the two groups of the switch devices are equal in number;
one end of a switch device in the first switch device group is correspondingly connected with a connector core wire led out from one of the transition bases;
one end of the switch device in the second switch device group is correspondingly connected with the connector core wire led out from the other transition base one by one.
According to the further technical scheme, a first junction is formed at the other end of the switch device of the first switch device group, a second junction is formed at the other end of the switch device of the second switch device group, and the two junctions are connected to the test tool, so that the first switch device group and the second switch device group are connected in series in the test loop.
According to a further technical scheme, the device comprises a shell, a switch device, a testing tool, a controller and a driving circuit are placed in the shell, and the transition base is embedded into the side wall of the shell so as to be connected with the electric connector of the rail vehicle to be tested in a matched mode.
In a further aspect, the transition base includes a plurality of types that are respectively compatible with different types of electrical connectors.
The above one or more technical solutions have the following beneficial effects:
the utility model discloses technical scheme is based on transition base, realize with the electricity connection of the electrical connector that awaits measuring, draw forth transition base's heart yearn, link to each other with switching device, test fixture establishes ties in its test circuit who constitutes with the electrical connector, in order to switch on insulation test to the rail vehicle electrical connector that awaits measuring, whole testing arrangement only need insert transition base with the both ends of electrical connector when using can test, avoided artifical direct to the electrical connector test leak hunting, the quality hidden danger of wrong detection and existence damage heart yearn stitch.
According to the technical scheme, the testing loop is formed, and the switch device is electrically connected with the lead of the transition base. Through transition base direct with wait to survey the electrical connector and link to each other, through the work of the switching device of control difference, realize the test to the heart yearn that the electrical connector is different, with test fixture series connection test circuit can, avoided artifical two pens of contact simultaneously, can lead to the electric shock, cause the problem of personal safety accident.
This disclosed technical scheme sets up the transition base of different grade type, uses with the electrical connector cooperation of required test respectively, has great commonality, satisfies the test of the electrical connector of the different stitch of different grade type.
Drawings
The accompanying drawings, which are included to provide a further understanding of the disclosure, illustrate embodiments of the disclosure and together with the description serve to explain the disclosure and are not to limit the disclosure.
FIG. 1 is an electrical connection diagram of a testing device according to an embodiment of the present disclosure;
FIG. 2 is a control circuit diagram of a testing apparatus according to an embodiment of the present disclosure;
FIG. 3 is a circuit diagram of a minimum system of a single chip microcomputer of the testing device according to the embodiment of the disclosure;
FIG. 4 is a latch circuit diagram of a test apparatus of an embodiment of the present disclosure;
fig. 5 is a circuit diagram of a triode drive relay of the testing device of the embodiment of the present disclosure;
FIG. 6 is a diagram illustrating a state of use of an electrical connector according to an embodiment of the present disclosure;
FIG. 7 is a block diagram of the test apparatus according to the embodiment of the present disclosure;
FIG. 8 is a first base structure view of an embodiment of the disclosure;
in the figure, the device comprises an operation panel 1, an operation panel 2, a megger 3, a controller 4, a display 5, a first base 6, a power module 7, a second base 5-1, a positioning pin 5-2, an anti-misplug pin 5-3, a pin hole 5-4 and a positioning hole.
Detailed Description
It should be noted that the following detailed description is exemplary and is intended to provide further explanation of the disclosure. Unless defined otherwise, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this disclosure belongs.
It is noted that the terminology used herein is for the purpose of describing particular embodiments only and is not intended to be limiting of example embodiments according to the present disclosure. As used herein, the singular forms "a", "an" and "the" are intended to include the plural forms as well, and it should be understood that when the terms "comprises" and/or "comprising" are used in this specification, they specify the presence of stated features, steps, operations, devices, components, and/or combinations thereof, unless the context clearly indicates otherwise.
The embodiments and features of the embodiments in the present disclosure may be combined with each other without conflict.
Example one
Referring to fig. 1, the present embodiment discloses a testing device for a rail vehicle electrical connector, comprising: the device comprises a switch device, a testing tool and at least one pair of transition bases, wherein the transition bases are respectively connected with two ends of an electric connector of the rail vehicle to be tested;
the transition base is led out of a connector core wire to be electrically connected to the corresponding switch devices;
the switch device and the test tool are connected in series in a test loop formed by the switch device and the electrical connector so as to conduct insulation test on the electrical connector of the rail vehicle to be tested.
According to the scheme of the embodiment, the quality hidden dangers such as missing detection, wrong detection and the like caused by manual operation are eliminated by testing in a way of the test loop, the test quality is improved, and the vehicle operation safety is further improved; and personnel only need to operate the pressurizing equipment to pressurize, thereby omitting fussy operation steps, avoiding the possibility of electric shock and reducing the labor intensity and labor cost of the personnel.
In an embodiment, in order to automatically implement the testing process of the apparatus, the apparatus further includes a controller and a driving circuit, wherein the controller is connected to the switching device through the driving circuit, and is configured to control the on/off state of the switching device through the driving circuit, and then control the on/off of the testing loop.
Preferably, the test system further comprises a display device and a control switch which are respectively connected with the controller to control the work of the controller, and the display device displays the test items.
The power supply device is a rechargeable power supply or a power supply device connected with an external power supply.
In a more specific implementation example, referring to fig. 2 to 5, the controller adopts a single chip, and the single chip controls the action of the relay to realize the on-off of the insulation conduction test loop, so that the automation degree is high. The single chip microcomputer is an AT89C51 single chip microcomputer, 74LS373 and 74LS377 latches, a relay, a resistor, a triode, a fly-wheel diode, a power supply module, an OLED display screen, a key, a pressurizing or conducting device and the like, the single chip microcomputer realizes a relay control function, the latches are used for expanding and multiplexing output pins of the single chip microcomputer, the power supply module, the fly-wheel diode, the triode and the resistor form a PNP triode driving circuit to drive a relay contact to act, the opening and closing action of the relay contact realizes the on-off of a core wire insulation conduction test loop of the connector, and the function of automatically testing the insulation conduction of the. 4 independent keys, namely an up key, a down key, a confirmation key and a return key, respectively realize the upward and downward selection of the connector model and the test mode, confirm the option and return to the function of the previous step; the OLED display screen displays the model, the conduction/insulation test mode and the working state of the connector.
The main controller selects an AT89C51 singlechip widely applied to an industrial control system, has the characteristics of compact system structure, flexible hardware design, system bus exposure, simple I/O operation and the like, and adopts a static clock mode, so that the product has low power consumption, high flexibility and low price.
Eight-port data of the singlechip P0 are parallelly accessed into 8 chips 74LS377, and the expansion of the output port of the singlechip is realized through the output end of 1 chip 74LS373, thereby meeting the control requirement of the multi-path relay.
The P1 interface is connected with the key module, 4 independent keys are provided, one end of each key is connected with the P1 interface of the singlechip, the other end of each key is grounded, and the side of the singlechip is at a low level after the keys are pressed down, so that the keys can be judged to be pressed down when the corresponding ports are detected to be at the low level, and corresponding functions are realized.
The P2 interface is connected with the OLED display screen, realized by adopting the AT89C51 singlechip to simulate the SPI communication time sequence, the SPI communication function defines a clock line (D0), a data line (D1), a data/command selection (DC) and a chip selection line (CS), and as the invention only has one OLED display screen, the CS chip selection line is directly grounded. The minimum system circuit diagram of the single chip microcomputer is shown in figure 3.
In the embodiment, the number of paths of the core wires contained in the connector is different due to different models of the connector, and in order to adapt to all the connectors, the number of paths is designed to be 32, and the connector containing 32 core wires (containing a connector shell) can be supported at most. Because the GPIO ports supported by the single chip microcomputer are only 32 paths in total, and the on-off tester for measuring the 32 paths needs 32X 2-64 paths of control output, the quantity is far from enough.
The I/O extension is realized by a latch, the structure is simple, the price is low, therefore, the design selects the parallel interface chips 74LS373 and 74LS377 which have high efficiency, good reliability, easy expansion and simple programming to carry out extension multiplexing on the output pins of the single chip microcomputer, and the defect of insufficient multi-channel output is made up by utilizing the high-speed operation of the single chip microcomputer. Through 8 parallel latch chips, 8 relays are controlled by each latch chip, and the single chip microcomputer is expanded into 64-bit output pins to further control the 64 relays. The latch circuit diagram is shown in fig. 4.
In fig. 4, 74LS373 is an 8-bit latch with output tri-state gates, having 8 inputs D0-D7, 8 outputs Q0-Q7, LE being data latch control, LE being low, latching data at the inputs to the internal latch,
for the output enable terminal, the content of the latch is passed through at low levelAnd outputting at the output end. In the figure, 74LS377 is an eight-D edge flip-flop, wherein 8 input terminals D0-D7 and 8 output terminals Q0-Q7 of 74LS377 are identical with the input terminal D under the action of the rising edge of the clock terminal (CLK) pulse when the control terminal/E is enabled to be in a low level, and the input terminal D has no influence on the output terminal Q when the CLK is in a high level or a low level. The trigger signal input terminal CLOCK in the design circuit is connected with P3.6, and the enable control terminals E of 8 chips are respectively connected with the output ports Q0-Q7 of 74LS 373.
During operation, the chip selection is performed first, and then data is written into the eight 74LS377 pieces respectively. One clock signal completes data writing into one LS377, when ALE outputs low level, P0 outputs chip selection signal and stores the chip selection signal into 74LS373, when ALE output changes to high level, data latching is completed, and chip selection is achieved; p0 outputs the write data for the selected chip, which completes the data latch when CLK changes to the rising edge. According to the method, data are written into 74LS377 in sequence to complete control over 64-path relays, and therefore expansion of 64-path output ports is achieved on the premise that only P0 data output ports are occupied.
In the specific embodiment, the voltage of the coil of the relay is 5V, the driving current is larger than 50mA to enable the relay to be attracted, and the output current of the pin of the singlechip is only about 5mA, so that an external driving circuit is required. The design adopts PNP type triode drive, as shown in FIG. 5.
If Vcc is 5V, Ies is 50mA, β is 100, Ib is >0.5mA
And Ib is (Vcc-Vbe)/R1-Vbe/R2
When R2 is 4.7K Ω, R1 is less than 6.63K Ω, and R1 is generally 3.6K Ω in order to make the transistor have a certain saturation depth and to satisfy the discreteness of the current amplification factor of the transistor.
If R1 is 3.6K Ω, when the control terminal of the integrated circuit is + Vcc, at least 1.2mA of driving current (current flowing through R1) should be provided to the driving circuit, and the high level output by many integrated circuits (e.g. a standard 8051 single chip microcomputer) cannot meet this requirement, but its low level driving capability is stronger (e.g. the low level output by an I/O port of the standard 8051 single chip microcomputer can provide 20mA of driving current (here, leakage current)), the relay should be driven by the circuit shown in fig. 5.
When the input voltage is 0V, the triode is saturated, the relay coil has a considerable current to pass through, and the relay is closed (ON); when the input is + Vcc, the triode is cut OFF and the relay is released (OFF).
Referring again to fig. 1, the core wires are led out through a transition base matched with the connector, two ends of each core wire are respectively connected with a relay in series, and each end (A, B end) of the 32 core wires connected into the relays in series is connected together in a junction mode and is respectively connected to two meter pens of a pressurizing or conducting device.
In the specific embodiment, core wires are led out through a transition base matched with the connector, two ends of each core wire are respectively connected with a relay in series, and each end (A, B end) of the 32 core wires connected into the relays in series is connected together in a junction mode and is respectively connected to two gauge pens of a pressurization or conduction device, so that a connector insulation conduction test loop is formed.
In a specific embodiment, the number of the switching devices is greater than or equal to the number of the transition bases, and the number of the transition bases is twice of the number of the electrical connectors to be tested.
In practical application, see fig. 7, still include test platform, this test platform, test platform is including test panel and operating panel and hold the chamber, and the last controller 3, display 4, a plurality of first base 5, a plurality of second base 7 of installing of test panel, and operating panel is last to be installed operation panel 1 and megohmmeter 2, and power module 6 is still installed to one side of test platform. The relay is placed in the containing cavity, and the operation panel and the display are connected to the controller.
The first base and the second base are used as transition bases to be embedded into the test panel, so that the rail vehicle electrical connector to be tested is connected with the transition bases in a matched mode to conduct testing.
Referring to fig. 8, the transition base includes a plurality of types, including a rectangular base and a circular base, each adapted to accommodate a different type of electrical connector, each embedded in a test panel of the test apparatus.
The first base is a rectangular base, the upper part and the lower part of the rectangular base are respectively provided with a positioning needle 5-1 and a positioning hole 5-4, the middle part of the rectangular base is provided with a plurality of groups of needle holes 5-3 which are used for being matched with contact pins of an electric connector and accommodating the contact pins of the electric connector, and the rectangular base is also provided with a misplug prevention pin 5-2.
The transition base matched with the connector is utilized, relays are connected in series in the test loops at two ends of the core wire of the connector, and the single chip microcomputer controls the combined action of the opening and closing contacts of the relays, so that the on-off of the test loops is realized, and the purpose of measuring the insulation conduction performance is achieved.
Two ends of a core wire connected in series into the relay contact are respectively converged together, and a pressurizing or conducting device is connected in the middle to form a test loop.
When the relay at one end of the core wire of the control connector acts, the relay at the other end can be controlled to act sequentially or selectively.
When the testing device disclosed by the disclosure is used for measuring the insulation performance, the pressurizing equipment has the characteristics of outputting test voltage, being wide in adjustable range and the like, such as a megohmmeter; when the conduction performance is measured, the conduction test equipment has the characteristic of forming a closed series circuit and being capable of making a crisp sound, such as a buzzer.
The testing device has wide applicability and strong expandability, can be applied to connectors of different types, can not be limited by the number of tested core wires by additionally adding the latch, and has high flexibility.
When the testing device works specifically, the relay is controlled by the single chip microcomputer to switch on a testing loop of a tested object according to different testing modes (conduction or insulation) so as to carry out corresponding measurement. The operation principle of the conduction and insulation test will be described below.
The specific conduction test working principle is as follows:
the connector core A, B is terminated on two styluses of a conducting device such as a beeper,
(1) when the connector core wire 1 is tested, the single chip microcomputer firstly controls the first relay contact A1 at the end A to be closed, and then sequentially controls all relay contacts at the end B to be closed;
(2) when the connector core wire 2 is tested, the second relay contact A2 at the end A is controlled to be closed, the A1 is disconnected at the moment, and then other relay contacts (B2, B3 and B4 … B32) except B1 at the end B are controlled to be closed in sequence;
(3) when the connector core wire 3 is tested, the second relay contact A3 at the end A is controlled to be closed, the A1 and the A2 are disconnected, and then the relay contacts (B3 and B4 … B32) at the end B except the B1 and the B2 are controlled to be closed in sequence;
and repeating the steps until all the core wires of the connector are tested. To ensure time for the conducting device to respond, 1s will stay between each set of actions and the meter panel pointer reading is observed.
Taking an example of conducting a conduction test on a connector with 4 channels, the testing steps are as follows:
(1) the singlechip controls the A-end relay contact A1 to be closed, then controls the B-end relay contacts B1, B2, B3, B4 and B5 (connector shell) to be closed in sequence, and tests the connector core wire 1;
(2) the singlechip controls the A-end relay contact A2 to be closed and the A1 to be opened, and then controls the B-end relay contacts B2, B3, B4 and B5 to be closed in sequence to test the connector core wire 2;
(3) the singlechip controls the A-end relay contact A3 to be closed and the A2 to be opened, and then controls the B-end relay contacts B3, B4 and B5 to be closed in sequence to test the connector core wire 3;
(4) the singlechip controls the A-end relay contact A4 to be closed and the A3 to be opened, and then controls the B-end relay contacts B4 and B5 to be closed in sequence to test the core wire 4 of the connector;
(5) the singlechip controls the A-terminal relay contact A4 to be disconnected and the B-terminal relay contacts B4 and B5 to be disconnected, the test is finished, and the test records are shown in Table 1:
TABLE 1 continuity test chart
The embodiment of the disclosure also discloses an insulation test working principle:
the connector core wire A, B is terminated on two styli of a pressurized device such as a megger,
(1) when the connector core wire 1 is tested, the single chip microcomputer firstly controls the first relay contact A1 at the end A to be closed, and then sequentially controls other relay contacts (B2, B3 and B4 … B32) at the end B except B1 to be closed;
(2) when the connector core wire 2 is tested, the second relay contact A2 at the end A is controlled to be closed, the A1 is controlled to be opened, and then other relay contacts (B3, B4 … B32) except B1 and B2 at the end B are controlled to be closed in sequence;
and repeating the steps until all the core wires of the connector are tested. To ensure time for the pressurizing device to respond, 1s will stay between each set of actions and the gauge pointer reading is observed.
In a specific embodiment, taking conducting test on a connector with 4 channels as an example, the testing steps are as follows:
(1) the singlechip controls the A-end relay contact A1 to be closed, then sequentially controls the B-end relay contacts B2, B3, B4 and B5 (connector shell) to be closed, and tests the connector core wire 1;
(2) the singlechip controls the A-end relay contact A1 to be disconnected and the A2 to be closed, and then controls the B-end relay contacts B3, B4 and B5 to be closed in sequence to test the connector core wire 2;
(3) the singlechip controls the A-end relay contact A2 to be disconnected and the A3 to be closed, and then controls the B-end relay contacts B4 and B5 to be closed in sequence to test the connector core wire 3;
(4) the singlechip controls the A-end relay contact A3 to be disconnected and the A4 to be closed, and then controls the B-end relay contact B5 to be closed in sequence to test the connector core wire 4;
(5) the singlechip controls the A-terminal relay contact A4 to be opened and the B-terminal relay contact B5 to be opened, the test is finished, and the test records are shown in Table 2:
TABLE 2 insulation test recording sheet
The above description is only a preferred embodiment of the present disclosure and is not intended to limit the present disclosure, and various modifications and changes may be made to the present disclosure by those skilled in the art. Any modification, equivalent replacement, improvement and the like made within the spirit and principle of the present disclosure should be included in the protection scope of the present disclosure.
Although the present disclosure has been described with reference to specific embodiments, it should be understood that the scope of the present disclosure is not limited thereto, and those skilled in the art will appreciate that various modifications and changes can be made without departing from the spirit and scope of the present disclosure.
Claims (10)
1. Testing apparatus for a rail vehicle electrical connector, comprising:
the device comprises a switch device, a testing tool and at least one pair of transition bases, wherein the transition bases are used for being connected with two ends of an electric connector of the rail vehicle to be tested respectively;
the transition base is provided with a plurality of transition devices, and core wires of the transition devices are led out from the transition base and are electrically connected to the corresponding switch devices;
the switch device and the test tool are connected in series in a test loop formed by the switch device and the electrical connector so as to conduct insulation test on the electrical connector of the rail vehicle to be tested.
2. The testing apparatus for electrical connectors of rail vehicles according to claim 1, further comprising a controller and a driving circuit, wherein the controller is connected to the switching device through the driving circuit, and is configured to control the on/off state of the switching device through the driving circuit, and further control the on/off of the testing circuit.
3. The test apparatus for a railway vehicle electrical connector as in claim 2, further comprising a display device and a control switch, each connected to the controller.
4. A testing device for a railway vehicle electrical connector according to any one of claims 1 to 3, further comprising a power supply unit, the power supply unit being a rechargeable power supply or a power supply unit connected to an external power supply.
5. The testing apparatus for rail vehicle electrical connectors according to claim 1, wherein the number of switching devices is equal to or greater than the number of transition bases, and the number of transition bases is twice the number of electrical connectors to be tested.
6. The test apparatus for a railway vehicle electrical connector as claimed in claim 1, wherein the switching devices are respectively two groups of equal number, namely a first switching device group and a second switching device group;
one end of a switch device in the first switch device group is correspondingly connected with a connector core wire led out from one of the transition bases;
one end of the switch device in the second switch device group is correspondingly connected with the connector core wire led out from the other transition base one by one.
7. The testing apparatus for a rail vehicle electrical connector as defined in claim 6, wherein the other end of the switching device of the first switching device group forms a first junction, the other end of the switching device of the second switching device group forms a second junction, and both junctions are connected to the testing tool, so that the first switching device group and the second switching device group are connected in series in the testing loop.
8. The test fixture for a rail vehicle electrical connector of claim 1, further comprising a housing, wherein the transition base is embedded in a sidewall of the housing to allow the transition base to be mated with a rail vehicle electrical connector to be tested.
9. The test fixture for a rail vehicle electrical connector of claim 8, wherein the transition base includes a plurality of types that are respectively compatible with different types of electrical connectors.
10. The test device for the rail vehicle electrical connector according to claim 1, wherein the test tool is a pressurizing device or a conducting device; the switching device is a relay element.
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| CN202020807951.0U CN212207637U (en) | 2020-05-14 | 2020-05-14 | Testing device for rail vehicle electrical connector |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113514781A (en) * | 2021-04-26 | 2021-10-19 | 广东电网有限责任公司 | Multi-wire core comparison device |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113514781A (en) * | 2021-04-26 | 2021-10-19 | 广东电网有限责任公司 | Multi-wire core comparison device |
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