Urban rail train vehicle-mounted signal wiring-free cabinet

Abstract

The utility model discloses a vehicle-mounted signal wiring-free cabinet of an urban rail train, which comprises a wiring-free front outgoing line group box, an expansion module and a cabinet body, a guide rail is arranged on the cabinet body, and the wiring-free front outgoing line group box and the expansion module are detachably mounted on the cabinet body through the guide rail. According to the urban rail train vehicle-mounted signal wiring-free cabinet, the problems that due to the fact that equipment integrated in a train vehicle-mounted signal machine cabinet is high in integration degree and large in number, wiring in the vehicle-mounted signal machine cabinet is complex, cables of different voltage grades are difficult to isolate, the signal quality is reduced, and the signal machine cabinet is heavy and large in occupied space can be solved.

Description

Technical Field

[0001] This application relates to the technical field of on-vehicle signal cabinets for rail vehicles, and particularly to a non-wired cabinet for on-vehicle signals of urban rail trains. Background Art

[0002] At present, the information exchange between on-vehicle equipment boxes and cabinets used in urban rail trains and the outside world is mainly through cables. Some equipment directly exchanges information with external equipment through multi-core connectors on the board. Such a method is mainly used in some cases where the signal current is low, regular maintenance is required, and the signal lamp display information on the board does not need to be observed. Moreover, such an information exchange method cannot achieve anti-interference of signals transmitted inside the cable and concise cable routing. This routing method is rarely used on trains. Another approach is to connect the board to the backplane inside the chassis, and then connect to the heavy-duty connector of the on-vehicle equipment cabinet through cables on the backplane, which can solve some of the problems mentioned above, such as large signal current, anti-interference of signals transmitted inside the cable, and concise cable routing. However, there are problems such as complex internal wiring of the on-vehicle cabinet, difficulty in isolating cables with different voltages, and complex later maintenance and debugging.

[0003] With the increasing development of urban rail transit and the continuous update of electronic signal equipment in China, the equipment related to train operation safety is increasing. Therefore, the equipment / signal modules integrated in the on-vehicle signal cabinet of the train are also increasing, resulting in an increasing number of signals that need to be processed by the on-vehicle signal cabinet. As a result, the internal and external signal quality of the on-vehicle signal cabinet is reduced, the signal cabinet is bulky, occupies a large space, which is contradictory to the requirements of low internal and external signal quality, reliability, miniaturization, lightweight, and low cost of modern urban rail train on-vehicle signal cabinets. Therefore, the non-wired design inside the on-vehicle signal cabinet is imperative. Summary of the Utility Model

[0004] To solve the above technical problems, the utility model provides a non-wired cabinet for on-vehicle signals of urban rail trains, which can solve the problems of high integration and large number of devices integrated in the on-vehicle signal cabinet of the train, resulting in complex internal wiring of the on-vehicle signal cabinet, difficulty in isolating cables with different voltage levels, reducing signal quality, making the signal cabinet bulky, and occupying a large space.

[0005] The technical solution provided by the utility model is as follows:

[0006] A non-wired cabinet for on-vehicle signals of urban rail trains includes a non-wired front-out cable module, an expansion module, and a cabinet body. The cabinet body is provided with guide rails, and the non-wired front-out cable module and the expansion module are respectively installed on the cabinet body through the guide rails in a detachable manner.

[0007] Preferably, the non-wiring front-outlet box assembly includes an external interface board assembly, an extended motherboard assembly, a front panel of the wire passing layer, a motherboard of the wire passing layer, a plug-in motherboard, a plug-in PCB, and a non-wiring box chassis. An accuracy mounting board for fixing the extended motherboard assembly and the plug-in PCB is provided inside the non-wiring box chassis. The plug-in motherboard is mounted on the cross beam of the non-wiring box chassis through fasteners. The front panel of the wire passing layer is arranged on one side surface at one end of the non-wiring box chassis, and the motherboard of the wire passing layer is arranged on the end surface at one end of the non-wiring box chassis.

[0008] Preferably, the external interface board assembly includes a connector mounting board, a heavy-duty connector, an external interface motherboard, and a column. The heavy-duty connector is fixed on the connector mounting board, and the external interface motherboard is fixed on the column.

[0009] Preferably, a heavy-duty connector welding insert core is mounted on one side of the external interface motherboard, and a straight pin connector I is mounted on the other side of the external interface motherboard; a chamfer structure is provided on the insulator of the heavy-duty connector welding insert core.

[0010] Preferably, 90-degree bent pin connectors with guide pin holes are respectively provided on the opposite two sides of the extended motherboard assembly, and the 90-degree bent pin connectors on both sides are respectively connected to the external interface board assembly and the plug-in motherboard.

[0011] Preferably, metal reinforcing ribs are respectively provided around the extended motherboard assembly.

[0012] Preferably, sockets corresponding to plug-in connectors and straight pin connectors II with guide pin holes are provided on the plug-in motherboard.

[0013] Preferably, an air inlet is provided at the lower part of the side surface of the non-wiring front-outlet box assembly, and an air outlet is provided on the top surface of the non-wiring front-outlet box assembly. A fan is installed at the air outlet, and the fan is installed on a fixing plate arranged on the top surface of the non-wiring front-outlet box assembly.

[0014] Preferably, side door panels are respectively provided on both sides of the cabinet body, and a rear door panel is provided on the back of the cabinet body. Metal conductive foam is pasted at the contact positions between the cabinet body and the side door panels and the rear door panel.

[0015] Preferably, grounding connection wires are respectively provided at the bottom of the cabinet body, the side door panels, and the rear door panel to ensure the conductive continuity of the whole cabinet body.

[0016] The present application has the following advantages compared with the prior art:

[0017] The wire-free cabinet for on-vehicle signals of urban rail trains in this application, through the settings of the wire-free front-outlet group box, expansion module and cabinet body, eliminates the signal connection wires and equipment power supply wires between the equipment / signal group boxes in the existing on-vehicle signal cabinet. By directly connecting the wire-free front-outlet group box and the expansion module through the PCB and the shielded electrical connector, the quality of the internal and external communication signals of the on-vehicle signal cabinet is improved, and the volume, weight and cost of the on-vehicle signal cabinet are further reduced, meeting the requirements of lightweight and miniaturization of the on-vehicle signal cabinet for modern urban rail trains. At the same time, the functions of the plug-in box are integrated and the plug-in box is strengthened. Brief Description of the Drawings

[0018] In order to more clearly illustrate the technical solutions in the embodiments of this application or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only some embodiments recorded in this application. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on these drawings.

[0019] Figure 1 Structural schematic diagram of the wire-free cabinet for on-vehicle signals of urban rail trains in the embodiment of the present utility model;

[0020] Figure 2 Structural schematic diagram of the wire-free front-outlet group box in the embodiment of the present utility model;

[0021] Figure 3 Structural schematic diagram of the wire-free group box plug-in box in the embodiment of the present utility model;

[0022] Figure 4 Structural schematic diagram of the assembly of the external interface board in the embodiment of the present utility model;

[0023] Figure 5 Structural schematic diagram of the external interface mother board in the embodiment of the present utility model;

[0024] Figure 6 Structural schematic diagram of the assembly of the expansion mother board in the embodiment of the present utility model;

[0025] Figure 7 Structural schematic diagram when the plug-in mother board is connected to the wire-free group box plug-in box in the embodiment of the present utility model;

[0026] Figure 8 Structural schematic diagram of the precision mounting plate in the embodiment of the present utility model;

[0027] Figure 9 Structural schematic diagram when a fan is installed on the wire-free front-outlet group box in the embodiment of the present utility model;

[0028] Figure 10It is a schematic structural diagram of the cabinet body in the embodiment of the present utility model;

[0029] Figure 11 It is a schematic structural diagram of the plug-in motherboard in the embodiment of the present utility model;

[0030] Figure 12 It is a schematic structural diagram of the non-wiring front-outlet box with a fixing plate in the embodiment of the present utility model.

[0031] Reference numerals:

[0032] 1. Non-wiring front-outlet box; 101. Air inlet; 102. Air outlet; 103. Fan; 104. Fixing plate; 11. External interface board assembly; 111. Connector mounting plate; 112. Heavy-duty connector; 113. External interface motherboard; 114. Column; 115. Heavy-duty connector welding pin; 116. Straight-pin connector I; 12. Extension motherboard assembly; 121. 90-degree bent-pin connector; 122. Metal reinforcing rib; 13. Front panel of the wire-passing layer; 14. Wire-passing layer motherboard; 15. Plug-in motherboard; 151. Socket; 152. Straight-pin connector II; 16. Plug-in PCB; 17. Non-wiring box chassis; 171. Cross beam; 18. Precision mounting plate; 2. Expansion module; 3. Cabinet body; 31. Metal conductive foam; 32. Ground connection wire; 4. Guide rail. Detailed implementation manners

[0033] In order to enable those skilled in the art to better understand the technical solutions in the present application, the technical solutions in the embodiments of the present application will be clearly and completely described below. Obviously, the described embodiments are only a part of the embodiments of the present application, rather than all the embodiments. Based on the embodiments in the present application, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present application.

[0034] As Figures 1-12 shown, the embodiment of the present utility model provides an on-vehicle signal non-wiring cabinet for urban rail trains, which includes a non-wiring front-outlet box 1, an expansion module 2 and a cabinet body 3. A guide rail 4 is provided on the cabinet body 3. The non-wiring front-outlet box 1 and the expansion module 2 are respectively installed on the cabinet body 3 through the guide rail 4 in a detachable manner (fixed by screw connection).

[0035] In this embodiment, the non-wired front-out wiring box 1 includes an external interface board assembly 11, an extended motherboard assembly 12, a wire-passing layer front panel 13, a wire-passing layer motherboard 14, a plug-in motherboard 15, a plug-in PCB 16, and a non-wired wiring box chassis 17. An accuracy mounting plate 18 for fixing the extended motherboard assembly 12 and the plug-in PCB 16 is provided inside the non-wired wiring box chassis 17. The plug-in motherboard 15 is mounted on the cross beam 171 of the non-wired wiring box chassis 17 through fasteners. The wire-passing layer front panel 13 is arranged on one side surface at one end of the non-wired wiring box chassis 17, and the wire-passing layer motherboard 14 is arranged on the end surface at one end of the non-wired wiring box chassis 17.

[0036] In this embodiment, the accuracy mounting plate 18 is a sheet metal bending part. Nut columns are riveted on the sheet metal bending part to fix the extended motherboard assembly 12. The sheet metal bending part has two purposes: one is to improve the stiffness of the accuracy mounting plate 18 itself, and the other is that since both sides of the sheet metal bending part are fixed on the side walls of the non-wired wiring box chassis 17, it forms an integral structure with the non-wired wiring box chassis 17, strengthening the overall stiffness of the non-wired wiring box chassis 17 and ensuring that the non-wired wiring box chassis 17 can still provide reliable structural strength in a harsh working environment.

[0037] In this embodiment, the external interface board assembly 11 includes a connector mounting plate 111, a heavy-duty connector 112, an external interface motherboard 113, and a column 114. The heavy-duty connector 112 is fixed on the connector mounting plate 111, and the external interface motherboard 113 is fixed on the column 114. The connector mounting plate 111 has two functions: one is to fix the heavy-duty connector 112; the other is to fix the external interface motherboard 113 by fastening the column 114, and ensure the connection accuracy of the external interface motherboard 113 and eliminate the stress between the pins and sockets inside the heavy-duty connector 112, ensure that the pins inside the heavy-duty connector 112 are not stressed, and ensure reliable signal connection. In addition, the column 114 mounted on the heavy-duty connector 112 provides stiffness for the external interface motherboard 113 to prevent the external interface motherboard 113 from deforming in a vibration environment and causing the internal wiring of the external interface motherboard 113 to break, etc. The external interface motherboard 113 is fixed to the connector mounting plate 111 through the column 114. First, the column 114 is fastened to the side of the external interface motherboard 113 with a welding insert core by screws, then the connector mounting plate 111 is installed, and finally the heavy-duty connector 112 is installed.

[0038] In this embodiment, a heavy-duty connector welding insert 115 is installed on one side of the external interface motherboard 113, and a straight-pin connector I 116 is installed on the other side of the external interface motherboard 113; a chamfer structure is provided on the insulator of the heavy-duty connector welding insert 115 to provide guidance for the pins of the straight-pin connector I 116 to insert into the inside of the insert, meet the insertion accuracy of the 12-pair insertion of the external interface motherboard 113 and the expansion motherboard, eliminate the radial stress between the pins and sockets of the heavy-duty connector 112, and at the same time meet the signal connection reliability.

[0039] In this embodiment, 90-degree bent-pin connectors 121 with guide pin holes are respectively provided on the opposite sides of the expansion motherboard assembly 12, and the 90-degree bent-pin connectors 121 on both sides are respectively connected to the external interface board assembly 11 and the plug-in motherboard 15. The expansion motherboard assembly 12 is installed on the precision mounting plate 18 of the non-wiring chassis assembly 1 and fastened to the nut posts by screws. In order to ensure that the expansion motherboard assembly 12 can be used normally in the vehicle-mounted environment, metal reinforcing ribs 122 are respectively provided around the expansion motherboard assembly 12 to ensure the signal connection reliability of the expansion motherboard assembly 12 in the vibration and impact environment; in addition, since the 90-degree bent-pin connectors 121 with guide pin holes are installed on the expansion motherboard assembly 12, when respectively inserted into the plug-in motherboard 15 and the external interface motherboard 113, the guide pins are used to offset the radial stress, and at the same time, a truss-like structure is formed by the metal reinforcing ribs 122 behind the connectors to ensure that the stress received by the expansion motherboard assembly 12 is timely transmitted to the non-wiring front-outlet chassis 1, ensure that the expansion motherboard assembly 12 is not subjected to force impact, prevent the expansion motherboard assembly 12 from deforming and cracking, and at the same time ensure the signal connection stability of the heavy-duty connector 112 and the expansion motherboard assembly.

[0040] In this embodiment, sockets 151 corresponding to the plug-in connectors and straight-pin connectors II 152 with guide pin holes are provided on the plug-in motherboard 15, and the plug-in motherboard 15 is fastened to the cross beam 171 of the non-wiring chassis plug-in box 17 by screws..

[0041] In this embodiment, an air inlet 101 is provided at the lower part of the side surface of the non-wired front outlet box 1, and an air outlet 102 is provided on the top surface of the non-wired front outlet box 1. A fan 103 is installed at the air outlet 102, and the fan 103 is installed on a fixing plate 104 provided on the top surface of the non-wired front outlet box 1. Air enters from the air inlets 101 below both sides of the non-wired front outlet box 1 and flows out from above the non-wired front outlet box 1, and the plug-in board is cooled by means of air convection. The fixing plate 104 ensures the structural strength by sheet metal bending. At the same time, nut studs are riveted on the fixing plate 104 for installing the through-wire layer motherboard 14, the fan 103 and fixing the front panel 13 of the through-wire layer. The through-wire layer motherboard 14 is used to ensure that some special signals are input and output from above the non-wired box chassis 17 and to ensure the power supply of the fan 103. In addition, the fixing plate 104 is also used to reinforce the structural strength of the non-wired chassis 17 and further improve the stiffness of the non-wired chassis 17.

[0042] In this embodiment, side door panels are respectively provided on both sides of the cabinet body 3, and a rear door panel is provided on the back of the cabinet body 3. Metal conductive foam 31 is pasted at the contact positions between the cabinet body and the side door panels and the rear door panel. The cabinet body 3 is designed for shielding to ensure that the product can work normally under the harsh electromagnetic environment of the vehicle-mounted cabinet. Specifically, there is a conductive continuity design at the joints of the cabinet body 3, including good conductivity between the side door panels and the rear door panel of the cabinet body 3 and the cabinet body of the cabinet. In the conductive design of the cabinet body 3, grounding connection wires 32 are respectively provided at the bottom, the side door panel and the rear door panel of the cabinet body 3 to ensure the overall conductive continuity of the cabinet body 3.

[0043] In this embodiment, in order to ensure good heat dissipation of the circuit boards in the cabinet, heat dissipation air inlets are also opened on the side door panels on both sides below the cabinet body 3, and heat dissipation air outlets are opened above the cabinet body 3 by means of forced convection.

[0044] In this embodiment, the heavy-duty non-wired connection solution is mainly realized by using the housing, pins, pin retaining insulators of the heavy-duty connector 112 and the heavy-duty connector welding pin core 115 and the plug-in PCB 16. The heavy-duty connector welding pin core 115 is welded on the plug-in PCB 16 to form component one. The pins are fixed on the pin retaining insulators and installed in the connector housing to form component two. Then the above-mentioned component one and component two are connected together to form the non-wired solution at the socket end. In addition, there is a conical spring body on the pin, the purpose of which is to lock with the front end face of the pin retaining insulator to prevent the pin from retracting backward. There is a cylindrical boss on the pin body of the pin, the purpose of which is to contact with the rear end face of the pin retaining insulator to prevent the pin from running forward. Through the front and rear end faces of the pin and the pin retaining insulator being locked tightly, the pin is firmly stuck in the insulator to complete the transmission and connection of electrical signals.

[0045] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present utility model. Various modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present utility model. Therefore, the present utility model will not be limited to the embodiments shown herein, but rather to the broadest scope consistent with the principles and novel features disclosed herein.

Claims

1. An on-vehicle signal non-wired cabinet for urban rail trains, characterized in that, It includes a non-wired front-outlet cubicle (1), an expansion module (2) and a cabinet body (3). A guide rail (4) is provided on the cabinet body (3). The non-wired front-outlet cubicle (1) and the expansion module (2) are respectively installed on the cabinet body (3) in a detachable manner through the guide rail (4).

2. The on-vehicle signal non-wiring cabinet for urban rail trains according to claim 1, wherein The non-wired front-outlet cubicle (1) includes an external interface board assembly (11), an expansion motherboard assembly (12), a front panel of the wire-passing layer (13), a wire-passing layer motherboard (14), a plug-in motherboard (15), a plug-in PCB (16) and a non-wired cubicle plug box (17). An accuracy mounting board (18) for fixing the expansion motherboard assembly (12) and the plug-in PCB (16) is provided in the non-wired cubicle plug box (17). The plug-in motherboard (15) is installed on the cross beam (171) of the non-wired cubicle plug box (17) through fasteners. The front panel of the wire-passing layer (13) is arranged on one side surface at one end of the non-wired cubicle plug box (17), and the wire-passing layer motherboard (14) is arranged on the end surface at one end of the non-wired cubicle plug box (17).

3. The on-vehicle signal non-wiring cabinet for urban rail trains according to claim 2, characterized in that, The external interface board assembly (11) includes a connector mounting board (111), a heavy-duty connector (112), an external interface motherboard (113) and a column (114). The heavy-duty connector (112) is fixed on the connector mounting board (111), and the external interface motherboard (113) is fixed on the column (114).

4. The on-vehicle signal non-wiring cabinet for urban rail trains according to claim 3, characterized in that, A heavy-duty connector welding insert core (115) is installed on one side of the external interface motherboard (113), and a straight-pin connector I (116) is installed on the other side of the external interface motherboard (113); a chamfer structure is provided on the insulator of the heavy-duty connector welding insert core (115).

5. The on-vehicle signal non-wiring cabinet for urban rail trains according to claim 2, wherein 90-degree bent-pin connectors (121) with guide pin holes are respectively provided on the opposite two sides of the expansion motherboard assembly (12), and the 90-degree bent-pin connectors (121) on both sides are respectively connected to the external interface board assembly (11) and the plug-in motherboard (15).

6. The on-vehicle signal non-wiring cabinet for urban rail trains according to claim 5, characterized in that Metal reinforcing ribs (122) are respectively provided around the expansion motherboard assembly (12).

7. The on-vehicle signal non-wired cabinet for urban rail trains according to claim 2, characterized in that, Sockets (151) corresponding to plug-in connectors and straight-pin connectors II (152) with guide pin holes are provided on the plug-in motherboard (15).

8. The on-vehicle signal non-wiring cabinet for urban rail trains according to any one of claims 1-7, characterized in that An air inlet (101) is provided at the lower part of the side surface of the non-wired front-outlet cubicle (1), and an air outlet (102) is provided on the top surface of the non-wired front-outlet cubicle (1). A fan (103) is installed at the air outlet (102), and the fan (103) is installed on a fixing plate (104) arranged on the top surface of the non-wired front-outlet cubicle (1).

9. The on-vehicle signal non-wired cabinet for urban rail trains according to any one of claims 1-7, characterized in that, Side door panels are respectively provided on both sides of the cabinet body (3), and a rear door panel is provided on the back of the cabinet body. Metal conductive foam (31) is pasted at the contact positions between the cabinet body and the side door panels and the rear door panel.

10. The on-vehicle signal non-wiring cabinet for urban rail trains according to claim 9, characterized in that Ground connection connecting wires (32) are respectively provided at the bottom of the cabinet body, the side door panels and the rear door panel to ensure the conductive continuity of the whole cabinet body.

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