Connecting line, equipment box and rail vehicle

Abstract

The utility model firstly provides a connecting line which comprises a cable, at least one end of the cable is provided with a tubular terminal, one end of the tubular terminal is connected with the inserted cable in a double-point pressing mode, and the other end of the tubular terminal is connected with a connector. The utility model further provides an equipment box and a railway vehicle. According to the connecting line, the equipment box and the railway vehicle provided by the utility model, the problem of strand breakage of the cable can be effectively avoided by using the cable and the double-point pressing pipe type terminal.

Description

Technical Field

[0001] This utility model relates to the field of electrical equipment technology, and in particular to a connecting wire, equipment box, and rail vehicle. Background Technology

[0002] With the development of rail vehicle technology, high-speed trains have become the main choice for passengers in recent years due to their high-speed operation.

[0003] Compared to ordinary rail vehicles like the green-skinned trains common in the 1980s and 1990s, the electrical equipment on high-speed trains has more electrical components and requires more cabling. The electrical components are connected to each other and the cable terminals are connected to the electrical components by connecting wires. Terminals are installed at both ends of the connecting wires. However, high-speed trains will generate frequent vibrations during operation. During the vibration, the connection points between the terminals and the connecting wires may be damaged.

[0004] Therefore, in the existing technology, the original connecting wires of the high-voltage equipment box have varying degrees of damage, such as broken strands, at the connection points between the terminals and the connecting wires during the operation of high-speed trains. Utility Model Content

[0005] The main purpose of this utility model is to solve the above-mentioned problems and shortcomings, and to provide a connecting line, equipment box and rail vehicle, which can effectively avoid the problem of cable strand breakage by using cables and double-point crimped tubular terminals.

[0006] To achieve the purpose of this utility model, the present utility model first provides a connecting wire, which adopts the following technical solution:

[0007] A connecting line includes a cable, at least one end of which is provided with a tubular terminal, one end of which is connected to the inserted cable by a two-point crimping method, and the other end is connected to a connector.

[0008] Furthermore, the tubular terminal is also provided with a connection portion for connecting to the cable.

[0009] Furthermore, the connecting part is pressed together with the cable assembly.

[0010] Furthermore, the wall thickness of the tubular terminal is 2.5 mm.

[0011] Furthermore, the cable is a flexible cable.

[0012] Furthermore, the thickness of the connector is 2±0.2mm.

[0013] Furthermore, the bending radius of the cable is greater than or equal to three times the outer diameter of the cable.

[0014] Furthermore, the cable diameter is greater than 20mm. 2At that time, the bending radius is greater than or equal to 5 times the outer diameter of the cable.

[0015] The second objective of this invention is to provide an equipment box, which adopts the following technical solution:

[0016] A device box, wherein a connecting cable as described above is provided inside the device box.

[0017] The third objective of this invention is to provide a rail vehicle, which adopts the following technical solution:

[0018] A rail vehicle, the rail vehicle being equipped with an equipment box as described above.

[0019] In summary, the connecting line, high-voltage equipment box, and rail vehicle provided by this utility model have the following technical advantages compared with the prior art:

[0020] The structure and control principle are simple and reliable;

[0021] By using flexible conductors and 2.5mm thick tubular terminals, and employing a double-point crimping method, the problem of cable strand breakage can be effectively avoided. Attached image description:

[0022] Figure 1 This utility model provides a schematic diagram of a connecting wire structure. Figure 1 ;

[0023] Figure 2 This utility model provides a schematic diagram of the internal circuit connection structure of a high-voltage equipment box. Figure 2 ;

[0024] Among them, there is a connecting wire 1, a tubular terminal 2, a double-point crimping end 21, a connector 3, a high-voltage equipment box with a circular hollow area 6, a connecting part 4, a cable 5, a high-voltage equipment box 6, a cable connector 77, a surge arrester Arr, and a vacuum circuit breaker VCB.

[0025] It should be noted that these accompanying drawings and textual descriptions are not intended to limit the scope of the present invention in any way, but rather to illustrate the concept of the present invention to those skilled in the art by referring to specific embodiments. Detailed Implementation

[0026] To make the objectives, technical solutions, and advantages of the embodiments of this utility model clearer, the technical solutions in the embodiments will be clearly and completely described below with reference to the accompanying drawings. The following embodiments are used to illustrate this utility model, but are not intended to limit the scope of this utility model.

[0027] In the description of this utility model, it should be noted that the terms "upper", "lower", "front", "rear", "left", "right", "vertical", "inner", and "outer" indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. 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.

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" 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. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The present invention will now be described in further detail with reference to the accompanying drawings and specific embodiments.

[0030] This utility model first provides a connecting line 1, including a cable 5, at least one end of the cable 5 is provided with a tubular terminal 2, one end of the tubular terminal 2 is connected to the inserted cable 5 by a double-point crimping method, and the other end is connected to a connector 3.

[0031] like Figure 1 As shown, the connecting line 1 provided by this utility model includes a cable 5. In this embodiment, the cable 5 is a flexible cable 5, which can be bent within a predetermined range. Depending on the model / outer diameter of the cable 5, its bending radius should meet the corresponding standard requirements. For example, the bending radius of the cable 5 should be greater than or equal to 3 times the outer diameter of the cable 5.

[0032] Furthermore, when the diameter of cable 5 is less than or equal to 20mm 2 When bending, the bending radius should be greater than or equal to three times the outer diameter of cable 5. When the diameter of cable 5 is greater than 20mm. 2 When bending, the bending radius should be greater than or equal to 5 times the outer diameter of the cable. For extra-soft cables used in special locations, the bending radius can be 3 times the outer diameter.

[0033] The cable 5 has a terminal at at least one end. In this embodiment, the terminal is a tubular terminal 2, and more specifically, a tubular terminal 2 with a wall thickness of 2.5 mm is used.

[0034] One end of the tubular terminal 2 is connected to an electrical component via a connector 3, and the other end is crimped to a cable 5. In this embodiment, the end of the cable 5 is inserted into the cylindrical structure of the tubular terminal 2, such as... Figure 1As shown, the end of the tubular terminal 2 is connected to the end of the cable 5 using a double-point crimping method. On the one hand, this can extend the connection section between the tubular terminal 2 and the cable 5, increase the crimping area, and prevent detachment. On the other hand, by using the tubular terminal 2 in combination with the double-point crimping method, the cable 5 and the terminal are flattened before double-point crimping, so that the wire bundle inside the cable 5 is tightly attached and basically in the same plane. Under vibration, they will generate the same amplitude, and the amplitude will be small, thereby avoiding damage at that point.

[0035] Furthermore, a connecting part 4 is provided at the double-point crimping end of the tubular terminal 2 (the end that is double-point crimped with the cable 5). The connecting part 4 is integrally formed with the tubular terminal 2 and has a tubular or flat tubular structure, which is fitted over the cable 5. The end of the cable 5 passes through the connecting part 4 and is then inserted into the double-point crimping end of the tubular terminal 2.

[0036] The connecting part 4 is fitted onto the outside of the cable 5 and is integrally formed with the tubular terminal 2 or connected to the tubular terminal 2 with a double-point crimping end using an existing connection method. After the cable 5 is crimped with the tubular terminal at two points, the connecting part 4 is then crimped to the cable 5, so that the connecting part 4 tightly wraps around the cable 5, preventing unnecessary displacement of the wire bundle in the cable 5 during vibration, which could lead to strand breakage.

[0037] A connector 3 is provided at the other end of the tubular terminal 2 (non-double-point crimped end). The connector 3 can be an integral part of the tubular terminal 2, or it can be integrated and connected to the tubular terminal 2 in any manner. The connector 3 is used for connection to other electrical components, such as… Figure 1 As shown, in this embodiment, the connector 3 and the tubular terminal 2 are integrally formed, that is, the connector 3 and the tubular terminal 2 are integrated into a single structure. The connector 3 is a strip-shaped structure with a thickness of 2±0.2mm, and the main structure is provided with two circular hollow areas 7 for connecting to the wiring terminals of electrical components after assembly.

[0038] The connecting wire 1 provided by this utility model has at least one end provided with the tubular terminal described above, which is connected to the cable 5 by double-point crimping. In practical applications, tubular terminals with double-point crimping can be provided at both ends of the cable 5. The connecting wire 1 provided in this embodiment can be used to connect two electrical components.

[0039] According to Clause 9 of ICE 61373-2010, a simulated long service life test was conducted under increased random vibration levels. The test was performed under standard operating conditions for 10 hours, and no damage was observed in connector 1. After the 10-hour standard vibration test, further tests were conducted in both vertical and longitudinal directions, with an amplitude of 1mm and vibration frequencies ranging from 10Hz to 150Hz, for a total of 175,000 vibrations in each direction and frequency band, totaling (2 × 15 × 175,000 =) 5.25 million vibrations. The unidirectional vibration count was 2.625 million vibrations. No damage was observed in cable 5, fully demonstrating that connector 1 provided in this embodiment can solve the damage problem of cable 5 in the prior art.

[0040] This utility model further provides an equipment box, in which the connecting line 1 described above is used. The specifications of the wire harness in the cable 5 of the connecting line 1 are determined according to the function, purpose, and current requirements of the electrical components to be connected, so as to achieve an effective circuit connection.

[0041] In this embodiment, taking the high-voltage equipment box 6 used on a rail vehicle as an example, the wiring connection method when using the connecting line 1 provided in this example in the high-voltage equipment box 6 is introduced.

[0042] A surge arrester Arr, a vacuum circuit breaker VCB, and two different types of connecting wires 1 are installed in the high-voltage equipment box 6, namely the 2501A type connecting wire 1 and the 2502 type connecting wire 1. Both ends of the 2501A type connecting wire 1 and the 2502 type connecting wire 1 are equipped with tubular terminals 2 that are double-point pressed with the cable 5.

[0043] Among them, such as Figure 2 As shown, one end of the surge arrester Arr passes through the high-voltage equipment box 6 and is grounded, while the other end is connected to the vacuum circuit breaker VCB via a 2502 type connecting line 1. The other end of the vacuum circuit breaker VCB passes through the high-voltage equipment box 6 via a 2501A type connecting line 1 and is connected to the cable on the vehicle. In this embodiment, a cable connector 7 is provided on the high-voltage equipment box 6, and the other end of the 2501A type connecting line 1 is connected to the cable connector 7.

[0044] The connecting wire 1 provided in this embodiment can also be widely used in other electrical connection fields. The specifications of the wire harness used in the connecting wire 1 can be adjusted according to the performance requirements of the electrical components to be connected. The equipment box mentioned above should not be regarded as a limitation of this utility model.

[0045] This utility model further provides a rail vehicle that uses the high-voltage equipment box 6 described above, and the connecting line 1 described above can also be used in other parts of the vehicle body as needed.

[0046] In summary, the connecting line 1, high-voltage equipment box 6, and rail vehicle provided by this utility model have the following technical advantages compared with the prior art:

[0047] The structure and control principle are simple and reliable.

[0048] By using flexible conductors and 2.5mm thick tubular terminals 2, and employing a double-point crimping method, the problem of cable strand breakage can be effectively avoided.

[0049] As described above, similar technical solutions can be derived from the given solutions. Any simple modifications, equivalent changes, and alterations made to the above embodiments based on the technical essence of this utility model, without departing from the scope of this utility model's technical solution, shall still fall within the scope of this utility model's technical solution.

Claims

1. A connection line, characterized by: The cable is provided with a tubular terminal at one end, the tubular terminal is connected with the inserted cable in a double-point pressing manner, and the other end is connected with a connector. The double-point pressing end of the tubular terminal is provided with a connecting part connected with the cable; the end of the cable is inserted into the double-point pressing end of the tubular terminal through the connecting part; the cable is pressed and flattened and then inserted into the double-point pressing end, so that the wire harness in the cable is tightly attached and basically in the same plane; the cable and the tubular terminal are double-point pressed, and then the connecting part is connected with the cable in a pressing manner, so that the connecting part wraps the cable.

2. A connecting line as claimed in claim 1, characterized in that: The wall thickness of the tubular terminal is 2.5 mm.

3. A connecting line as claimed in claim 1, characterized in that: The cable is a flexible cable.

4. A connecting line as claimed in claim 1, characterized in that: The thickness of the connector is 2±0.2 mm.

5. A connection line according to any one of claims 1 to 4, characterized in that: The bending radius of the cable is greater than or equal to 3 times the outer diameter of the cable.

6. A connecting line as claimed in claim 5, characterized in that: The cable diameter is greater than 20 mm 2 The bend radius is greater than or equal to 5 times the cable outside diameter.

7. An equipment cabinet characterized by: The equipment box is provided with a connecting cable as claimed in any one of claims 1 to 6.

8. A rail vehicle, characterized by: The rail vehicle is provided with an equipment box as claimed in claim 7.

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