Vehicle-end high-voltage connector for motor train unit

Abstract

A vehicle end high-voltage connector for a motor train unit comprises a plug and a socket, the plug is inserted into the socket, and the plug comprises a first clamp spring, a pin assembly, a second clamp spring, a spring, a coupling nut, a pin insulator, a plug shell, a first gasket, a first nut, a first wire sealing sleeve, a first pressing ring and a plug tail accessory; the socket comprises a square plate shell assembly, a jack assembly, a sealing ring, a third clamping spring, a jack insulator, a second gasket, a second nut, a second wire sealing sleeve, a second pressing ring and a socket tail accessory. The high-voltage electric connector structure has the beneficial effects that the high-voltage electric connector structure is different from a conventional connector on a motor train unit, and particularly, a plug and socket connection mode adopts a quick plugging mode, so that time is saved for decompiling and coupling among carriages, convenience is brought to an operator, and the labor intensity is reduced.

Description

Technical Field

[0001] The present invention relates to the technical field of motor vehicles, and in particular to a vehicle-end high-voltage connector for a motor vehicle group. Background Art

[0002] At present, most EMU vehicles produced in China use imported structural connectors, and there is a domestic blank in the connection of high-current connectors on the vehicle end of EMUs. In order to cooperate with various CRRC systems to carry out independent research and development and independent production, and realize the strategic layout of localization of key EMU systems, we have developed the localization of high-voltage connectors for EMUs. The application environment of high-voltage connectors for EMUs is relatively harsh, and the working conditions are high voltage and high current, which places extremely high requirements on the protection performance of the connector itself and the stability of the guide point. Summary of the invention

[0003] The purpose of the present invention is to provide a high-voltage connector for the vehicle end of an EMU, to realize the localization of the high-voltage connector for the vehicle end of an EMU and to realize the design of a connector that meets the actual needs of my country's EMUs, to achieve quick plugging and unplugging, to save time for the unpacking and coupling between carriages, to facilitate operators and to reduce labor intensity.

[0004] In order to achieve the above object, the present invention adopts the following technical scheme: A high-voltage connector for a train end of an EMU includes a plug and a socket, wherein the plug is inserted into the socket, and the plug includes a first retaining spring, a pin assembly, a second retaining spring, a spring, a connecting nut, a pin insulator, a plug housing, a first washer, a first nut, a first sealing sleeve, a first pressure ring, and a plug tail accessory; The outer surface of the plug housing is provided with an external thread at one end, and a raised ring and a groove ring at the other end, a spring is placed between the raised ring of the plug housing and the groove ring; the inner surface of the connecting nut is provided with a raised ring, the inner diameter of the connecting nut matches the outer diameter of the raised ring of the plug housing; the connecting nut is sleeved on the plug housing and the raised ring in the connecting nut is located between the spring and the groove ring; a second retaining spring is provided in the groove ring; The pin insulator is inserted into the plug housing, and a first clamping spring is arranged at the end of the plug housing to fix the pin insulator in the plug housing; The threaded end of the plug housing is covered with a first washer and the first washer is fastened to the plug housing using a first nut; the pin assembly is inserted from the threaded end of the plug housing; the first sealing sleeve and the first pressing ring are arranged at the end of the pin assembly; the plug tail accessory is fastened to the thread of the plug housing through its own thread; The socket comprises a square plate housing component, a jack component, a sealing ring, a third retaining ring, a jack insulator, a second washer, a second nut, a second sealing sleeve, a second pressure ring and a socket tail accessory; An annular groove is provided on the inner wall at one end of the square disk shell assembly and is used to place a sealing ring, and a second annular groove is provided on the side close to the annular groove and is used to place a third retaining spring; an external thread is provided on the outer surface of the other end of the square disk shell assembly, a second washer is provided at the thread of the square disk shell assembly, and the second washer is fastened to the square disk shell assembly using a second nut; the jack assembly is inserted from the threaded section of the square disk shell assembly; the second sealing sleeve and the second pressure ring are provided at the end of the jack assembly; the socket tail accessory is fastened to the thread of the square disk shell assembly through its own thread.

[0005] Preferably, the plug housing and the square disc housing assembly are both made of aluminum alloy; the jack insulator and the pin insulator are both made of polysulfone; and the pin assembly and the jack assembly are both made of pure copper.

[0006] The beneficial effects of the present invention are as follows: after the high-voltage electrical connector for EMUs of the present invention has passed type test verification, in order to verify the functional stability and reliability of the connector during long-term operation under actual line operating conditions; and after 3 months of operation assessment on CRH6 and CRH3 EMUs, the stability and reliability of the connector of the present invention in current vehicle use are confirmed.

[0007] The high-voltage electrical connector structure of the present invention is different from the previous connectors on the EMU, especially the plug and socket connection adopts a quick plug-in form, which saves time for unpacking and connecting between carriages, is convenient for operators, and reduces labor intensity. BRIEF DESCRIPTION OF THE DRAWINGS

[0008] Figure 1 This is a schematic diagram of the plug structure of the present invention; Figure 2 This is a schematic diagram of the socket structure of the present invention; Figure 3 This is a schematic diagram of the structure of the cable sealing sleeve of the present invention; In the figure: 1 first retaining spring, 2 pin assembly, 3 second retaining spring, 4 spring, 5 connecting nut, 6 pin insulator, 7 plug housing, 8 first gasket, 9 first nut, 10 first sealing sleeve, 11 first pressure ring, 12 plug tail accessories, 13 square plate housing assembly, 14 jack assembly, 15 sealing ring, 16 third retaining spring, 17 jack insulator, 18 second gasket, 19 second nut, 20 second sealing sleeve, 21 second pressure ring, 22 socket tail accessories. DETAILED DESCRIPTION

[0009] For ease of understanding, the method for telecommunication network access translation capability provided by an embodiment of the present invention is described in detail below in conjunction with the accompanying drawings.

[0010] An embodiment of the present invention provides a vehicle-end high-voltage connector for an EMU, comprising a plug and a socket, wherein the plug is inserted into the socket.

[0011] like Figure 1 As shown, the plug includes a first retaining spring 1, a pin assembly 2, a second retaining spring 3, a spring 4, a connecting nut 5, a pin insulator 6, a plug housing 7, a first washer 8, a first nut 9, a first sealing sleeve 10, a first pressure ring 11 and a plug tail accessory 12; The outer surface of the plug housing 7 is provided with an external thread at one end, and a raised ring and a groove ring at the other end, a spring 4 is placed between the raised ring of the plug housing 7 and the groove ring; the inner surface of the connecting nut 5 is provided with a raised ring, the inner diameter of the connecting nut 5 matches the outer diameter of the raised ring of the plug housing 7; the connecting nut sleeve 5 is mounted on the plug housing 7 and the raised ring in the connecting nut 5 is located between the spring 4 and the groove ring; a second retaining spring 3 is provided in the groove ring; The pin insulator 6 is inserted into the plug housing 7, and a first clamping spring 1 is arranged at the end of the plug housing 7 to fix the pin insulator 6 in the plug housing 7; The threaded end of the plug housing 7 is covered with a first washer 8 and the first washer 8 is fastened to the plug housing 7 using a first nut 9; the pin assembly 2 is inserted from the threaded end of the plug housing 7; the first sealing sleeve 10 and the first pressing ring 11 are arranged at the end of the pin assembly 2; the plug tail accessory 12 is fastened to the thread of the plug housing 7 through its own thread; like Figure 2 As shown, the socket includes a square plate housing component 13, a jack component 14, a sealing ring 15, a third retaining ring 16, a jack insulator 17, a second gasket 18, a second nut 19, a second sealing sleeve 20, a second pressure ring 21 and a socket tail accessory 22; An annular groove is provided on the inner wall at one end of the square disk housing component 13 for placing a sealing ring 15, and a second annular groove is provided on the side close to the annular groove for placing a third retaining ring 16; an external thread is provided on the outer surface of the other end of the square disk housing component 13, a second washer 18 is provided at the thread of the square disk housing component 13, and a second nut 19 is used to fasten the second washer 18 to the square disk housing component 13; the jack component 14 is inserted from the threaded section of the square disk housing component 13; the second sealing sleeve 20 and the second pressure ring 21 are provided at the end of the jack component 14; the socket tail accessory 22 is fastened to the thread of the square disk housing component 13 through its own thread.

[0012] Figure 3 It is a schematic structural diagram of the second sealing sleeve 20 or the first sealing sleeve 10 of the present invention.

[0013] After the high-voltage electrical connector for EMUs described in the present invention has passed type test verification, in order to verify the functional stability and reliability of the connector during long-term operation under actual line operating conditions; and to carry out loading and operation assessment on CRH6 and CRH3 EMU models, after 3 months of operation assessment, the stability and reliability of the connector described in the present invention in current vehicle use have been confirmed.

[0014] The high-voltage electrical connector structure of the present invention is different from the previous connectors on the EMU, especially the plug and socket connection adopts a quick plug-in form, which saves time for unpacking and connecting between carriages, is convenient for operators, and reduces labor intensity.

[0015] The applicant needs to specially point out that the pin assembly and the socket assembly are both existing technologies and can be purchased directly, and the connector of the present invention is used in accordance with relevant electrical specifications.

[0016] The above is only a specific embodiment of the present invention, but the protection scope of the present invention is not limited thereto. Any person skilled in the art can easily think of changes or substitutions within the technical scope disclosed by the present invention, which should be included in the protection scope of the present invention. Therefore, the protection scope of the present invention should be based on the protection scope of the claims.

Claims

1. A high-voltage connector for a train end of an EMU, comprising a plug and a socket, wherein the plug is inserted into the socket, and characterized in that: The plug includes a first retaining spring, a pin assembly, a second retaining spring, a spring, a connecting nut, a pin insulator, a plug housing, a first washer, a first nut, a first sealing sleeve, a first pressure ring and plug tail accessories; The outer surface of the plug housing is provided with an external thread at one end, and a raised ring and a groove ring at the other end, a spring is placed between the raised ring of the plug housing and the groove ring; the inner surface of the connecting nut is provided with a raised ring, the inner diameter of the connecting nut matches the outer diameter of the raised ring of the plug housing; the connecting nut is sleeved on the plug housing and the raised ring in the connecting nut is located between the spring and the groove ring; a second retaining spring is provided in the groove ring; The pin insulator is inserted into the plug housing, and a first clamping spring is arranged at the end of the plug housing to fix the pin insulator in the plug housing; The threaded end of the plug housing is covered with a first washer and the first washer is fastened to the plug housing using a first nut; the pin assembly is inserted from the threaded end of the plug housing; the first sealing sleeve and the first pressing ring are arranged at the end of the pin assembly; the plug tail accessory is fastened to the thread of the plug housing through its own thread; The socket comprises a square plate housing component, a jack component, a sealing ring, a third retaining ring, a jack insulator, a second washer, a second nut, a second sealing sleeve, a second pressure ring and a socket tail accessory; An annular groove is provided on the inner wall at one end of the square disk shell assembly and is used to place a sealing ring, and a second annular groove is provided on the side close to the annular groove and is used to place a third retaining spring; an external thread is provided on the outer surface of the other end of the square disk shell assembly, a second washer is provided at the thread of the square disk shell assembly, and the second washer is fastened to the square disk shell assembly using a second nut; the jack assembly is inserted from the threaded section of the square disk shell assembly; the second sealing sleeve and the second pressure ring are provided at the end of the jack assembly; the socket tail accessory is fastened to the thread of the square disk shell assembly through its own thread.

2. A high voltage connector for a train as claimed in claim 1, characterized in that: The plug housing and the square disc housing assembly are both made of aluminum alloy material.

3. The high-voltage connector for a train as claimed in claim 1, characterized in that: The socket insulator and the pin insulator are both made of polysulfone.

4. The vehicle-end high-voltage connector for an EMU as claimed in claim 1, characterized in that: The pin assembly and the socket assembly are both made of pure copper.

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