Monorail vehicle chassis wire harness

Abstract

The utility model relates to the technical field of rail transit, in particular to a monorail vehicle chassis wire harness. Comprising a nylon sealing tee joint, a first pipe opening, a second pipe opening, a third pipe opening, a first nylon wave hose, a first connector, a second nylon wave hose, a second connector, a third nylon wave hose and a third connector. An independent wiring path is designed to avoid electrical signal crosstalk, the path design can make full use of the space under the vehicle, the wire harness length can be shorter, the cable consumption is reduced, and the vehicle weight is reduced; a small-wire-diameter wire harness is provided with a nylon wave hose, a nylon sealing tee joint, a hose sealing joint and a variable-diameter ring, so that the whole-course protection can be realized without exposing bare wires, a cable gland is arranged when a large-wire-diameter wire harness enters a connector, so that the sealing protection can be realized, and the overall protection grade of the wire harness is higher.

Description

Technical Field

[0001] The utility model relates to the technical field of rail transit, in particular to an underframe wire harness of a monorail vehicle. Background Art

[0002] At present, the wire harness under the monorail vehicle, also known as the underframe wire harness, usually adopts a wiring rule that different-grade cables are approximately grouped into two categories: low-voltage wire harnesses and high-voltage wire harnesses according to the requirements of the cable withstand voltage level. Then, further grading is carried out under each category. When producing the wire harness, the cable bundles are first integrated separately according to the specific grades, and then arranged into two straight-through wire grooves according to the categories. The straight-through wire grooves are respectively installed on the left and right sides of the underframe, and the end boxes at the front and rear ends on the same side of the vehicle are directly connected to realize the circuit connection of the components and equipment inside the underframe and between the underframe and the vehicle.

[0003] However, the current integration method of the underframe wire harness of the monorail vehicle only specifically refers to the cable grade, without considering the differences in electrical parameters between different systems of the same grade. There is still an influence of electrical signal crosstalk, which affects the accuracy of vehicle electrical control. In addition, this mode of bundling by grade and wiring in the wire groove, due to the large number of wires and thick wire bundles in each cable bundle, results in a low protection level of the wire harness, and the aesthetics of the wire harness is poor after multiple changes and rectifications. Also, due to the fixed position of the wire groove, the wire harness connects components and equipment at different positions, making the overall wire harness longer, the cable material cost higher, and it is not conducive to the vehicle lightweight goal. Summary of the Utility Model

[0004] The purpose of the utility model is to provide an underframe wire harness of a monorail vehicle, aiming to solve the technical problems in the prior art that the current integration method of the underframe wire harness of the monorail vehicle only specifically refers to the cable grade, without considering the differences in electrical parameters between different systems of the same grade. There is still an influence of electrical signal crosstalk, which affects the accuracy of vehicle electrical control. In addition, this mode of bundling by grade and wiring in the wire groove, due to the large number of wires and thick wire bundles in each cable bundle, results in a low protection level of the wire harness, and the aesthetics of the wire harness is poor after multiple changes and rectifications. Also, due to the fixed position of the wire groove, the wire harness connects components and equipment at different positions, making the overall wire harness longer, the cable material cost higher, and it is not conducive to the vehicle lightweight goal.

[0005] To achieve the above purpose, an underframe wire harness of a monorail vehicle adopted by the utility model includes a nylon sealed three-way head. The nylon sealed three-way head is provided with a first pipe orifice, a second pipe orifice and a third pipe orifice. One end of the first pipe orifice is connected with a first nylon corrugated hose, one end of the first nylon corrugated hose is connected with a first connector, one end of the second pipe orifice is connected with a second nylon corrugated hose, one end of the second nylon corrugated hose is connected with a second connector, one end of the third pipe orifice is connected with a third nylon corrugated hose, and one end of the third nylon corrugated hose is connected with a third connector.

[0006] Among them, the first nylon corrugated hose and the first connector are connected by a first hose sealing joint, the second nylon corrugated hose and the second connector are connected by a second hose sealing joint, and the third nylon corrugated hose and the third connector are connected by a third hose sealing joint.

[0007] Among them, cable line number identifications are provided on the first connector, the second connector, and the third connector.

[0008] Among them, wire harness positioning color code bands are provided on the first nylon corrugated hose, the second nylon corrugated hose, and the third nylon corrugated hose.

[0009] Among them, the wire harness positioning color code band includes a yellow positioning color code, a red positioning color code, and a blue positioning color code.

[0010] Among them, the nylon sealed three-way head is in the shape of either a T shape or a Y shape.

[0011] Among them, the underframe wire harness of the monorail vehicle further includes a wire harness ID identification plate, and the wire harness ID identification plate is arranged on the third nylon corrugated hose.

[0012] An underframe wire harness of a monorail vehicle of the present utility model includes a nylon sealed three-way head. The nylon sealed three-way head is provided with a first pipe orifice, a second pipe orifice, and a third pipe orifice. One end of the first pipe orifice is connected to a first nylon corrugated hose, one end of the first nylon corrugated hose is connected to a first connector, one end of the second pipe orifice is connected to a second nylon corrugated hose, one end of the second nylon corrugated hose is connected to a second connector, one end of the third pipe orifice is connected to a third nylon corrugated hose, and one end of the third nylon corrugated hose is connected to a third connector. This design can design independent wiring paths for the wire harnesses of each system function on the vehicle according to the equipment positions of the wire harness source end and the target end, avoiding electrical signal crosstalk. The path design can make full use of the space under the vehicle, the length of the wire harness can be shorter, the cable usage can be reduced, and the vehicle weight can be reduced; for small-diameter wire harnesses, nylon corrugated hoses, nylon sealed three-way heads, hose sealing joints, and reducing rings can be installed to achieve full protection without exposing bare wires. When large-diameter wire harnesses enter the connector, gland heads can be installed for sealing protection, and the overall protection level of the wire harness is relatively high; wire harnesses of different system functions can be flexibly docked through the connectors at the ends of the wire harnesses without the need to set up a transfer terminal box, which can further reduce the weight of the vehicle; each system function wire harness is provided with a unique wire harness nameplate label, which can reflect the identity information and iterative version of the wire harness. The line number identifications at both ends of each cable in the wire harness can completely display all the information of the source end and the target end, making change and maintenance more convenient. Also, because the new model wire harness is further subdivided into system functions based on the voltage level, the number of wire harness cables is less, and the long-term aesthetics is better. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] To more clearly illustrate the technical solutions in the embodiments of the present invention 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 of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can be obtained based on these drawings.

[0014] Figure 1 is the front view of the present invention.

[0015] Figure 2 is the bundling diagram of the underframe wiring harness of the monorail vehicle of the present invention.

[0016] Figure 3 is the combined rule diagram of the cable line number identification in the present invention.

[0017] Figure 4 is a partial view of the bundling diagram of the underframe wiring harness of the monorail vehicle of the present invention.

[0018] Figure 5 is the schematic diagram of the wiring harness ID identification plate in the present invention.

[0019] 1 - Nylon sealed three - way head, 2 - First pipe orifice, 3 - Second pipe orifice, 4 - Third pipe orifice, 5 - First nylon corrugated hose, 6 - First connector, 7 - Second nylon corrugated hose, 8 - Second connector, 9 - Third nylon corrugated hose, 10 - Third connector, 11 - First hose sealing joint, 12 - Second hose sealing joint, 13 - Third hose sealing joint, 14 - Cable line number identification, 15 - Yellow positioning color mark, 16 - Red positioning color mark, 17 - Blue positioning color mark, 18 - Wiring harness ID identification plate. Detailed implementation manners

[0020] The following will describe in detail the embodiments of the present invention. The examples of the embodiments are shown in the drawings, where the same or similar reference numerals represent the same or similar elements or elements with the same or similar functions from beginning to end. The embodiments described below with reference to the drawings are exemplary and are intended to explain the present invention, and should not be construed as a limitation to the present invention.

[0021] Please refer to Figures 1 to 5, the present utility model provides a single-rail vehicle underframe wiring harness, including a nylon sealed three-way head 1. A first pipe orifice 2, a second pipe orifice 3, and a third pipe orifice 4 are arranged on the nylon sealed three-way head 1. One end of the first pipe orifice 2 is connected to a first nylon corrugated hose 5. One end of the first nylon corrugated hose 5 is connected to a first connector 6. One end of the second pipe orifice 3 is connected to a second nylon corrugated hose 7. One end of the second nylon corrugated hose 7 is connected to a second connector 8. One end of the third pipe orifice 4 is connected to a third nylon corrugated hose 9. One end of the third nylon corrugated hose 9 is connected to a third connector 10.

[0022] In this embodiment, this design can design independent wiring paths for the wiring harnesses of each system function on the vehicle according to the equipment positions of the wiring harness source end and the target end, avoiding electrical signal crosstalk. The path design can make full use of the space under the vehicle, the length of the wiring harness can be shorter, the cable usage can be reduced, and vehicle lightweighting can be achieved; for small-diameter wiring harnesses, nylon corrugated hoses, nylon sealed three-way heads 1, hose sealing joints, and reducing rings can achieve full protection without exposing bare wires. When large-diameter wiring harnesses enter the connectors, gland heads can be installed for sealing protection, and the overall protection level of the wiring harness is relatively high; wiring harnesses of different system functions can be flexibly docked through the connectors at the ends of the wiring harnesses without the need to set up transfer terminal boxes, which can further reduce the weight of the vehicle; each system function wiring harness is provided with a unique wiring harness nameplate label, which can reflect the identity information and iterative version of the wiring harness. The wire number markings at both ends of each cable in the wiring harness can completely display all the information of the source end and the target end, making change and maintenance more convenient. Also, because the new model wiring harness is further subdivided into system functions based on the voltage level, the number of wiring harness cables is less, and the long-term aesthetics is better.

[0023] Further, the first nylon corrugated hose 5 and the first connector 6 are connected through a first hose sealing joint 11. The second nylon corrugated hose 7 and the second connector 8 are connected through a second hose sealing joint 12. The third nylon corrugated hose 9 and the third connector 10 are connected through a third hose sealing joint 13.

[0024] In this embodiment, the hose sealing joint of this design combines a metal or nylon threaded sealing joint with a nylon corrugated hose to provide full sealing protection for the wiring harness. In this way, the wiring harness can be freely laid on the underframe wiring board and fixed by cable ties. There is no need to install a wire trough under the vehicle. At the same time, the hose sealing joint can be fastened on the gland plate, facilitating the wiring harness to pass through the box for connection, and can also be tightened with the connector tail attachment.

[0025] Further, cable wire number markings 14 are arranged on the first connector 6, the second connector 8, and the third connector 10.

[0026] In this embodiment, the cable wire number identification 14 is made of polyolefin material and has low-smoke and halogen-free properties. According to the naming of the docking device and the definition of the interface function, and in accordance with the designed wire number combination rule, it is printed and sleeved on each core wire heat-shrunk at the cable end. Through the wire number identification, the device names, interface names, and corresponding wiring points of the local and remote ends of the cable can be quickly identified.

[0027] Furthermore, wire harness positioning color label tapes are provided on the first nylon corrugated hose 5, the second nylon corrugated hose 7, and the third nylon corrugated hose 9.

[0028] In this embodiment, the wire harness positioning color label tape is an electrical flame-retardant color tape made of PVC material, which has good electrical insulation and flame-retardant properties and can be selected in a variety of colors.

[0029] Furthermore, the wire harness positioning color label tape includes a yellow positioning color label 15, a red positioning color label 16, and a blue positioning color label 17.

[0030] In this embodiment, the red positioning color label 16 represents the center point of the vehicle, the blue positioning color label 17 represents the wire harness branch point, and the yellow positioning color label 15 represents the position end identification point. By winding the wire harness positioning color label tape at the specified position outside the nylon corrugated hose, when the general assembly wiring is carried out in the workshop, the wire harness can be quickly and accurately laid according to the position of the positioning color label, avoiding secondary wiring of the underframe.

[0031] Furthermore, the shape of the nylon sealed three-way joint 1 is one of T-shaped or Y-shaped.

[0032] In this embodiment, the designed nylon sealed three-way joint 1 is composed of a main body, a claw, and a sealing ring. It is designed into two major categories of T-shaped and Y-shaped according to the docking angle, which can meet various wiring laying requirements of the wire harness. Then, according to the diameter size of each branch wire harness, a corresponding adapter is configured to realize the combination with the nylon corrugated hose. At the same time, the nylon sealed three-way joint 1 is provided with its own installation holes and can be directly fastened on the underframe wiring board without being bundled with cable ties.

[0033] Furthermore, the underframe wire harness of the monorail vehicle further includes a wire harness ID identification plate 18, and the wire harness ID identification plate 18 is arranged on the third nylon corrugated hose 9.

[0034] In this embodiment, the wire harness ID identification plate 18 is made of polyolefin material and has low-smoke and halogen-free properties. Its information includes the applicable vehicle number, wire harness number, drawing number, list version, drawing version, and QR code configuration information of the wire harness. It is fixed to a specified position on the wire harness using a cable tie. The version information is marked on the corresponding version with a marker pen to record the drawing list version corresponding to the current wire harness. After the wire harness is modified and rectified, the marking is updated and painted according to the corresponding version to facilitate identifying the latest technical status of the wire harness.

[0035] In this embodiment, the new mode of the underframe wire harness of a monorail vehicle is further subdivided into each system function based on the voltage level, and a wiring diagram is designed separately in combination with the wiring list and the equipment vehicle position. The cables are inserted into a nylon corrugated hose according to the following underframe wiring diagram and passed through the three interfaces of the Y-shaped or T-shaped nylon sealing tee 1. Nylon corrugated hoses and reducing rings of corresponding models are installed, and hose sealing joints of corresponding models are installed at the other ends of the corresponding nylon corrugated hoses. Connector housings of corresponding models are installed at the hose sealing joints. It is confirmed that all the connections between the hose sealing joints, the nylon sealing tee 1 and the nylon corrugated hoses are in place and reliable, and it is confirmed that the hose sealing joints and the connectors are installed in place and reliable. All the claw devices are visually inspected and are in the locked state. It is confirmed that all the components of the connector assembly are installed in place and all the connector pins are in the fully inserted state. Thus, a new mode of the underframe wire harness is completed. Each underframe wiring diagram can reflect all the information of cable cutting and wire harness integration of the wire harness corresponding to the system function. The materials used at each place in the drawing can be indicated by part numbers, and the relevant special technical requirements can be reflected by adding notes at the lower left corner of the underframe wiring diagram.

[0036] In this embodiment, on the designed underframe wiring diagram, the length of each branch of the wire harness, the name of the branch part, and the spacing of the main trunk line are clearly marked. Then, according to the wiring list, the cables of the wire harness are selected, and each outlet on the underframe wiring diagram is defined in sequence with a digital outlet number and outlet size. Then, according to Figure 3 the combination rules of different cable wire number identifications 14: single-core wire: wire number coding starting position - starting point position → ending position - ending point position; multi-core wire: wire core color starting position - starting point position → ending position - ending point position wire number coding; large wire over 10 square: wire number coding starting position - starting point position ↓ ending position - ending point position; the file for cable cutting and the wire number package for printing can be quickly compiled.

[0037] In this embodiment, on the completed underframe bundling diagram, the bundling path is simple and clear, all wire harness lengths and protection dimensions are completely marked, the nylon sealed three-way connectors 1 for wire harness protection, nylon corrugated hoses, and hose sealed joint materials correspond one by one with the part numbers. The positioning color codes set on the bundling diagram can help with the wire harness routing and positioning. Such an underframe bundling diagram enables production employees to more intuitively perform wire harness integration, improving the work efficiency of wire harness integration employees, making production operations, quality control, and reading diagrams more convenient, and thus enhancing the quality stability of the underframe wire harness.

[0038] In this embodiment, this design adopts a new mode. Based on the voltage level, it is further subdivided into each system function. For each system function wire harness, an underframe bundling diagram is designed separately. Visualizing the bundling list in text form enables production employees to intuitively master it, facilitating quality control during the production process. Compared with the current grading bundling and wire duct routing mode, since the wire harnesses in the new mode are subdivided into system functions, they are less affected by the shortage of production materials, facilitating off-site mass production and in-plant modular assembly, and greatly shortening the manufacturing cycle of single-track vehicles. Because the underframe wire harnesses in the new mode are separately routed instead of using wire ducts, it directly avoids electrical signal crosstalk. At the same time, the wire harness length is shorter, which can reduce the wire harness cost and the weight of the whole vehicle wire harness, save traction power, and reduce the maintenance cost of the vehicle and the line. Also, because the underframe wire harnesses in the new mode provide full protection for small-diameter wire harnesses and also seal and protect the connectors of large-diameter wire harnesses, the protection level of the underframe wire harnesses is higher, the product quality of the underframe wire harnesses is more stable, and the maintenance cost is reduced. Additionally, the new mode wire harnesses do not require a transfer terminal box, which can further reduce the vehicle weight and manufacturing cost. Moreover, in the new mode, each wire harness has a clear function and fewer wire harness roots, making changes and maintenance more convenient, and the long-term aesthetics of the wire harnesses is also better.

[0039] The above-disclosed is only a preferred embodiment of the present utility model. Of course, it cannot be used to limit the scope of the rights of the present utility model. Those of ordinary skill in the art can understand the entire or partial processes of implementing the above embodiments, and the equivalent changes made according to the claims of the present utility model still fall within the scope covered by the utility model.

Claims

1. A monorail vehicle underframe wiring harness, characterized in that it includes a nylon sealed three-way head, on which a first pipe orifice, a second pipe orifice and a third pipe orifice are provided. One end of the first pipe orifice is connected to a first nylon corrugated hose, one end of the first nylon corrugated hose is connected to a first connector, one end of the second pipe orifice is connected to a second nylon corrugated hose, one end of the second nylon corrugated hose is connected to a second connector, one end of the third pipe orifice is connected to a third nylon corrugated hose, and one end of the third nylon corrugated hose is connected to a third connector.

2. The monorail vehicle underframe wiring harness according to claim 1, characterized in that a first hose sealing joint is used to connect the first nylon corrugated hose and the first connector, a second hose sealing joint is used to connect the second nylon corrugated hose and the second connector, and a third hose sealing joint is used to connect the third nylon corrugated hose and the third connector.

3. The monorail vehicle underframe wiring harness according to claim 2, characterized in that cable line number identifiers are provided on each of the first connector, the second connector and the third connector.

4. The monorail vehicle underframe wiring harness according to claim 3, characterized in that wire harness positioning color-coded tapes are provided on each of the first nylon corrugated hose, the second nylon corrugated hose and the third nylon corrugated hose.

5. The monorail vehicle underframe wiring harness according to claim 4, characterized in that the wire harness positioning color-coded tape includes a yellow positioning color code, a red positioning color code and a blue positioning color code.

6. The monorail vehicle underframe wiring harness according to claim 5, characterized in that the shape of the nylon sealed three-way head is one of T-shaped or Y-shaped.

7. The monorail vehicle underframe wiring harness according to claim 6, characterized in that the monorail vehicle underframe wiring harness further includes a wire harness ID identification plate, and the wire harness ID identification plate is provided on the third nylon corrugated hose.

Images