Locomotive reconnection cable conduction testing device

Abstract

The utility model discloses a locomotive reconnection cable conduction testing device, which belongs to the technical field of railway locomotive production and comprises a testing box body. A power supply unit and a plurality of test units are arranged in the test box body; the test unit comprises a test switch, a light-emitting diode group, a current-limiting resistor and two sockets; the test switch, the light-emitting diode group, the current-limiting resistor and the power supply unit are sequentially connected between the two sockets through wires; the two ends of the reconnection cable are connected with the two sockets respectively, and the test switch is turned on to judge the state of the light-emitting diode set so as to judge whether the reconnection cable is conducted or not. The locomotive double-heading cable conduction testing device can effectively solve the problems of low efficiency of locomotive double-heading cable conduction testing, waste caused by excessive manpower resource configuration in the testing process and the like in the prior art.

Description

Technical Field

[0001] This utility model belongs to the field of railway locomotive manufacturing technology. Specifically, it relates to a continuity testing device for locomotive multiple-unit cables. Background Technology

[0002] Locomotive multiple-unit cables connect two or more locomotives for transmitting control signals, power, etc. Each branch cable within the harness must be reliably conductive. Continuity testing is a functional test conducted after the locomotive multiple-unit cable is manufactured, used to detect and screen for quality problems such as loose connections, broken cores, and incorrect terminal connections. Locomotive multiple-unit cables typically consist of three parts: the harness and the connector plugs connecting the two ends of the harness. The harness usually contains dozens of branch cables.

[0003] Currently, continuity testing of multiple-unit cables in the railway locomotive industry is conducted manually using a continuity tester. During testing, two people must operate the system. One person holds the connector plug of the multiple-unit cable and the red probe of the tester, placing the red probe firmly against the internal terminal of the plug, and then reports the terminal number to the other person. The other person holds the connector plug at the other end of the multiple-unit cable and the black probe of the tester. Based on the heard number, the black probe is placed firmly against the internal terminal of the corresponding numbered plug. A beep from the tester indicates continuity for that numbered sub-cable; otherwise, it is considered non-conductive. The main problems with this testing method are: 1) Low testing efficiency: Dozens of sub-cables installed in the multiple-unit cable bundle need to be tested one by one, and it is very easy to misread the terminal number and have to retest, making the testing time for a single multiple-unit cable bundle typically exceed 30 minutes. 2) High manpower requirements: The current testing method requires at least two people. Utility Model Content

[0004] The purpose of this invention is to provide a continuity testing device for locomotive multiple-unit cables, addressing the aforementioned shortcomings and solving problems such as low efficiency and wasteful manpower allocation in existing continuity testing techniques. To achieve this objective, this invention provides the following technical solution:

[0005] A continuity testing device for a locomotive multiple-unit cable includes a test housing; the test housing contains a power supply unit and several test units; each test unit includes a test switch, a group of light-emitting diodes (LEDs), a current-limiting resistor, and two sockets; the test switch, LED group, current-limiting resistor, and power supply unit are connected sequentially between the two sockets via wires; both ends of the multiple-unit cable are connected to the two sockets respectively; the test switch is turned on to determine the state of the LED group, thereby determining whether the multiple-unit cable is continuous.

[0006] Furthermore, the reconnecting cable includes several branch cables; the LED group includes several LEDs corresponding to the number of branch cables; each of the two sockets is provided with a branch socket corresponding to the number of branch cables; when both ends of the reconnecting cable are connected to the two sockets, one LED is connected in series with its corresponding branch cable; several LEDs are connected in parallel and then connected in series with the power supply unit, test switch, and current limiting resistor, and the continuity of the corresponding branch cable is determined by judging the state of each LED.

[0007] Furthermore, the socket includes rectangular sockets and circular sockets; both rectangular sockets and circular sockets are provided in even numbers for connecting multiplexed cables with different connector types.

[0008] Furthermore, the test chamber is equipped with a circular socket mounting plate and a rectangular socket mounting plate; the circular socket mounted on the circular socket mounting plate is perpendicular to the ground; the rectangular socket mounted on the rectangular socket mounting plate is set at a 35-degree angle to the horizontal plane.

[0009] Furthermore, each of the test units has two sockets, which are either circular or rectangular, and are arranged adjacent to each other on the test housing.

[0010] Furthermore, the power supply unit includes a power module, a battery, and a power conversion switch; both the power module and the battery can be independently connected to the power grid to power the test unit, and the power conversion switch is used to switch between the two power supply modes of the power module and the battery.

[0011] Furthermore, the test chamber is equipped with a dust cover; a hinge is provided on one side of the dust cover, and the dust cover rotates around the hinge to cover the rectangular socket mounting plate.

[0012] Furthermore, the dust cover is provided with a door lock on the side opposite the hinge.

[0013] Furthermore, it also includes a moving unit; the moving unit includes a moving base; four omnidirectional wheels are evenly arranged below the moving base; the test box is set on the upper side of the moving base.

[0014] Furthermore, a handrail is provided on one side of the movable base.

[0015] The beneficial effects of this utility model are:

[0016] 1. Using this testing device, the entire testing process can be completed by only one operator, eliminating the need for two people to work together, thus reducing the number of testing personnel and lowering the difficulty of operation.

[0017] 2. Compared with the traditional method of testing each cable individually, this testing device can simultaneously test and screen multiple bundles and multiple interconnected cables at one time, which can greatly shorten the operation time and improve work efficiency.

[0018] 3. The device can be placed at the testing station or quickly moved to the vicinity of the locomotive, and has excellent mobile operation capability. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model;

[0020] Figure 2 This is a schematic diagram of the dustproof cover of this utility model when closed;

[0021] Figure 3 This is a wiring diagram of the test unit of this utility model;

[0022] Figure 4 This is a wiring diagram of the power supply unit of this utility model;

[0023] Figure 5 This is the overall wiring diagram of this utility model;

[0024] In the attached diagram: 1. Test chamber; 2. Test switch; 3. LED array; 4. Rectangular socket; 5. Circular socket; 6. Rectangular socket mounting plate; 7. Power conversion switch; 8. Dust cover; 9. Movable base; 10. Casters; 11. Handrail. Detailed Implementation

[0025] The present invention will be further described in detail below with reference to the accompanying drawings and specific embodiments. To make the objectives, technical solutions, and advantages of the embodiments of the present invention clearer, the technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, not all embodiments. The components of the embodiments of the present invention described and shown in the accompanying drawings can generally be arranged and designed in various different configurations. Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed present invention, but merely represents selected embodiments of the present invention. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without inventive effort are within the scope of protection of the present invention.

[0026] It should be noted that similar reference numerals and letters in the following figures indicate similar items. Therefore, once an item is defined in one figure, it does not need to be further defined and explained in subsequent figures. In the description of this utility model, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the figures, or the orientation or positional relationship commonly used when the product of this utility model is in use. They are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first," "second," and "third," etc., are only used to distinguish descriptions and should not be construed as indicating or implying relative importance. In addition, the terms "horizontal," "vertical," etc., do not indicate that the component is required to be absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" simply means that its direction is more horizontal than "vertical," and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of this utility model, it should also be noted that, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," and "link" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] Example:

[0028] like Figures 1-5 As shown. A continuity testing device for multiple-unit locomotive cables includes a test housing 1, within which a power supply unit and several test units are provided. Each test unit, in conjunction with the power supply unit, can be used independently for continuity testing of the multiple-unit cables. Each test unit includes a test switch 2, a group of light-emitting diodes 3, a current-limiting resistor, and two sockets. The two sockets are adjacently arranged on the outer surface of the test housing 1, respectively used to connect the two ends of the multiple-unit cable under test. The test switch 2, the group of light-emitting diodes 3, the current-limiting resistor, the power supply unit, and the multiple-unit cable are sequentially connected by wires to form a circuit. Specifically, in this embodiment, 16 sockets are provided, allowing simultaneous continuity testing of 8 multiple-unit cables. Each test unit is connected to a DC 5V power supply from the power supply unit. Each test unit is used for continuity testing of one bundle of multiple-unit cables; a failure in any test unit will not affect the use of other test units. During testing, the connector plugs at both ends of the multiple-unit cable are inserted into the two adjacent sockets on the corresponding test unit. The wiring diagram of the test unit is shown below. Figure 3As shown in the diagram, the dashed lines represent the reconnected cable harness. X1.A and X1.B are the connection combinations formed by the connector plug and socket of the reconnected cable, respectively. The reconnected cable harness includes several branch cables, and the continuity of each branch cable needs to be tested. In this embodiment, there are 16 branch cables, and the corresponding LED group 3 also includes 16 LEDs. Each LED is connected to a corresponding branch socket and a corresponding branch cable. In the connected circuit, the 16 LEDs are arranged in parallel. When test switch 2 is closed, each branch cable in the reconnected cable harness is connected to a DC 5V power supply. If the branch cable has good continuity, the LED corresponding to the numbered branch cable will light up; otherwise, the LED will not light up. In this way, by connecting and testing the reconnected cable in one go, the LED group 3 can quickly detect and screen out branch cables with continuity problems. During the production process, each LED corresponds to a single socket with a unique number, and the multiple cables within the reconnection cable also have corresponding numbers. This ensures that when the reconnection cable is connected to the socket, each numbered socket can be connected to the corresponding numbered cable. Clear markings can be set to ensure the accuracy of the final test.

[0029] The power supply unit consists of a power module, a battery, a power conversion switch 7, etc., and its internal wiring diagram is shown below. Figure 4 As shown. The power module is plug-and-play, converting AC220V power to DC5V. When the test device is connected to an external AC220V single-phase power supply, it provides DC5V power to each test unit. This power supply method is suitable for fixed operation at the test station. The test device can also be pre-charged with an external AC220V single-phase power supply. When there is no external power supply near the railway line, the battery can provide DC5V power to the test device. The power conversion switch 7 is used to switch between the two power supply modes.

[0030] The 16 sockets in this embodiment can test at least one bundle of reconnected cables and up to eight bundles of reconnected cables at once. The wiring diagram is as follows. Figure 5 As shown, C01, C02...C08 each represent a bundle of reconnected cables.

[0031] It also includes a moving unit, comprising a moving base 9, on which the test chamber 1 is mounted. Universal casters 10 with self-locking devices are evenly distributed below the moving base 9, allowing the test chamber 1 to be moved to a designated testing position. A handle 11 is provided on one side of the moving base 9 for easy pushing by personnel. The sockets are divided into two types: rectangular sockets 4 and round sockets 5, which are connected to the test chamber 1 via rectangular socket mounting plates 6 and round socket mounting plates, respectively. The surface of the rectangular socket mounting plate 6 is designed to be inclined at a 35-degree angle to the horizontal plane, while the surface of the round socket mounting plate is perpendicular to the ground. This angle allows the tail section of the multiple-unit cable to lie flat on the ground after being connected to these sockets, preventing the connector plug from slipping off the socket due to the weight of the cable. The rectangular socket mounting plate 6 is a bolt-fastened structure, allowing for quick replacement and installation when the locomotive product needs to be upgraded to a new model of multiple-unit cable socket. The rectangular socket 4 is equipped with a dust cover 8 with hinges and a door lock. The dust cover 8 is opened during testing and closed after testing to prevent dust from entering the socket and interfering with the continuity test.

[0032] The working process of this utility model:

[0033] 1) Reconnection cable test

[0034] Before testing, the device is connected to an external AC220V single-phase power supply to precharge the battery. If battery power is not used, the device is directly connected to an external AC220V single-phase power supply, which is then converted by the power module. The two methods are switched via the power conversion switch 7.

[0035] During testing, the operator opens the dust cover on each reconnected cable socket, inserts the connector plugs at both ends of the reconnected cable under test into two adjacent sockets on the corresponding test unit, turns the power switch 7 to power on each test unit, closes the test switch 2 of the corresponding test unit, and connects each branch cable in the reconnected cable harness to a DC 5V power supply. If the branch cable has good conductivity, the LED corresponding to the numbered branch cable will light up; otherwise, the LED will not light up. Based on the status of the LED group 3, cables with conductivity problems can be quickly detected and screened.

[0036] After the test is completed, turn off test switch 2 and power conversion switch 7, disconnect the external power supply, remove the reconnection cable, and close the dust cover 8.

[0037] 2) Replacement of reconnection cable sockets

[0038] When producing new locomotive models, if the multiple-unit cable sockets installed on the device are not compatible with the new model of multiple-unit cables, the sockets on the device can be replaced. For sockets with the same mounting interface, simply loosen the fasteners and replace them; for sockets with different mounting interfaces, loosen the connecting fasteners on the corresponding round or rectangular socket mounting plate 6, replace the entire socket mounting plate with a new one, and then install the new model of multiple-unit cable socket. During replacement, ensure that there is a one-to-one connection between the socket and the LED group 3 after replacement.

[0039] The above description is only a preferred embodiment of the present utility model and does not limit the patent scope of the present utility model. Any equivalent structural or procedural transformations made based on the content of the present utility model specification and drawings, or direct or indirect applications in other related technical fields, are similarly included within the patent protection scope of the present utility model.

Claims

1. A locomotive rekeying cable continuity test device, comprising: The test box (1) is provided with a power supply unit and several test units. Each test unit includes a test switch (2), a group of light-emitting diodes (3), a current-limiting resistor and two sockets. The test switch (2), the group of light-emitting diodes (3), the current-limiting resistor and the power supply unit are connected in sequence between the two sockets by wires. The two ends of the reconnection cable are connected to the two sockets respectively. The test switch (2) is turned on to determine the status of the group of light-emitting diodes (3) and then to determine whether the reconnection cable is conductive.

2. The locomotive multiple-unit cable continuity testing device according to claim 1, characterized in that: The reconnecting cable includes several branch cables; the LED group (3) includes several LEDs corresponding to the number of branch cables; each of the two sockets is provided with a branch socket corresponding to the number of branch cables. When the two ends of the reconnecting cable are connected to the two sockets, one LED is connected in series with one of its corresponding branch cables; several LEDs are connected in parallel and then connected in series with the power supply unit, the test switch (2), and the current limiting resistor. The conduction of the corresponding branch cable is determined by judging the state of each LED.

3. The locomotive rekeying cable activation testing apparatus of claim 2, wherein: The socket includes a rectangular socket (4) and a circular socket (5); both the rectangular socket (4) and the circular socket (5) are provided in even numbers for connecting multiple-connection cables of different connector types.

4. The locomotive rekeying cable activation testing apparatus of claim 3, wherein: The test box (1) is provided with a circular socket mounting plate and a rectangular socket mounting plate (6); the circular socket (5) installed on the circular socket mounting plate is perpendicular to the ground; the rectangular socket (4) installed on the rectangular socket mounting plate (6) is set at 35 degrees to the horizontal plane.

5. The locomotive rekeying cable activation testing apparatus of claim 4, wherein: Each of the test units has two sockets, which are either round sockets (5) or rectangular sockets (4), and are arranged adjacent to each other on the test box (1).

6. The locomotive rekeying cable activation testing apparatus of claim 5, wherein: The power supply unit includes a power module, a battery and a power conversion switch (7); the power module and the battery can be connected to the power grid independently to supply power to the test unit, and the power conversion switch (7) is used to switch between the two power supply modes of the power module and the battery.

7. The locomotive rekeying cable activation testing apparatus of claim 6, wherein: The test chamber (1) is provided with a dust cover (8); a hinge is provided on one side of the dust cover (8), and the dust cover (8) rotates around the hinge to cover the rectangular socket mounting plate (6).

8. The locomotive rekeying cable activation testing apparatus of claim 7, wherein: The dust cover (8) is provided with a door lock on the side opposite to the hinge.

9. The locomotive rekeying cable activation testing apparatus of claim 8, wherein: It also includes a moving unit; the moving unit includes a moving base (9); four universal wheels (10) are evenly arranged below the moving base (9); the test box (1) is set on the upper side of the moving base (9).

10. The locomotive rekeying cable activation testing apparatus of claim 9, wherein: The movable base (9) is provided with a handrail (11) on one side.

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