CN217994409U

CN217994409U - Four-column bus bar suitable for urban rail train shaft end grounding

Info

Publication number: CN217994409U
Application number: CN202222404440.6U
Authority: CN
Inventors: 沈有炜; 刘通; 蔡和旭; 迟延迅; 韩沐行
Original assignee: CRRC Dalian Co Ltd
Current assignee: CRRC Dalian Co Ltd
Priority date: 2022-09-09
Filing date: 2022-09-09
Publication date: 2022-12-09
Anticipated expiration: 2032-09-09

Abstract

The utility model provides a four-column busbar suitable for urban rail train axle head ground connection, including insulating bottom plate, ground plate and mounting panel, the mounting panel is installed on urban rail train axle head, and insulating bottom plate connects on the mounting panel, and the ground plate is connected on insulating bottom plate; the center positions of the insulating bottom plate and the grounding plate are jointly connected with 4M 10 bolts, and the 4 bolts are sequentially arranged in a row at intervals in the transverse direction and are used for negative line connection of train underframe equipment; an extension area is arranged below the mounting plate, a base plate is arranged at the bottom of the extension area, and the base plate and the middle of the extension area are provided with a long circular hole and round holes distributed on two sides of the long circular hole in a penetrating mode and used for adapting cable clamps for fixing the axial cables in different directions. The invention converges the negative line of the device and the grounding line of the shaft end into a bus bar, thereby utilizing the space of the underframe to the utmost extent.

Description

Four-column bus bar suitable for urban rail train shaft end grounding

Technical Field

The utility model relates to a track traffic technical field especially relates to a four post busbar suitable for city rail train axle head ground connection.

Background

In order to ensure the electromagnetic compatibility environment health of an urban rail train and reduce electromagnetic interference caused by electrical equipment, a negative line or a ground line of various equipment on the train needs to be reliably grounded. At present, the most common grounding method is to collect the ground wire or the negative wire on the bus bar under the vehicle.

The bus bars used for the urban rail train are mainly divided into four-column bus bars and two-column bus bars according to the number of binding posts, each column can be connected with at most two cables, and the bus bars can be arranged at installation positions according to the grounding mode of underframe equipment. For the axle end of the bogie, the long two-column bus bar in the two-column bus bar category is generally adopted for grounding, so that the stability and small shaking amount of the axle end grounding cable are ensured.

Compared with the common two-column bus bar, the special long two-column bus bar for the shaft end grounding of the urban rail vehicle extends out of the lower part for a certain distance, and a cable clamp can be fixed in the mounting hole of the lower part. Because of often producing the displacement between city rail train's bogie and the automobile body, this can prevent that axle head earth cable from leading to rocking volume too big problem because of bogie deflection angle.

However, the conventional two-post and four-post bus bars have the following disadvantages:

1. for two-post bus

The location of the bogie axle end ground at the train underframe is substantially fixed and a two-column busbar is typically provided near the axle end ground point. However, because the stub ground wire occupies the space of one post on the bus bar, the occupied post cannot be retrofitted with other cables. If more than two equipment negative lines need to be grounded near the shaft end grounding, the existing long two-column bus bar cannot meet the requirement independently, and other bus bars need to be additionally arranged near the existing long two-column bus bar.

In response to the situation, a bus bar is additionally arranged, so that the purchasing cost is increased, and the underframe of the train is required to have enough space to facilitate the wiring. For the vehicle type with a less space of the underframe, more bus bars mean more dense cable routing, and the abrasion risk between the cable and the equipment can be increased.

2. For a four-post bus

Although it can connect 8 negative lines at most, it saves more wiring space compared with two-column bus. However, the structure of the cable clamp is not provided with a mounting hole for fixing the cable clamp, so that the shaft end grounding cable cannot be fixed, and the requirement on the shaking amount of the shaft end grounding cable cannot be met. It can only be used for grounding of electrical equipment, but not for shaft end grounding.

SUMMERY OF THE UTILITY MODEL

According to the technical problem, the four-column bus bar suitable for the axle end grounding of the urban rail train is provided. The utility model discloses the slotted hole and the round hole of seting up on 4M 10 bolts and below extension and the backing plate that mainly utilize the insulating bottom plate, ground plate, mounting panel, the central point that set up to assemble equipment negative line and axle head earth connection in a busbar, furthest utilizes the chassis space. The utility model discloses a technical means as follows:

a four-column busbar suitable for grounding of an axle end of an urban rail train comprises: the mounting plate is mounted on the axle end of the urban rail train, the insulating bottom plate is connected onto the mounting plate, and the ground plate is connected onto the insulating bottom plate;

the center positions of the insulating bottom plate and the grounding plate are jointly connected with 4M 10 bolts, and the 4 bolts are sequentially arranged in a row at intervals in the transverse direction and are used for negative line connection of train underframe equipment;

there is the extension district mounting panel below, and the extension district bottom is provided with the backing plate, the middle part of backing plate and extension district runs through to open there is the slotted hole and distributes the round hole in slotted hole both sides for at the used cable clamp of not equidirectional adaptation fixed axle end cable.

Furthermore, the mounting plate is bent at a right angle and comprises a first connecting plate arranged at the top and a second connecting plate connected with the first connecting plate in a bent manner, the first connecting plate is connected with the shaft end of the urban rail train, and the second connecting plate is connected with the insulating bottom plate.

Furthermore, two oblong holes are formed in the first connecting plate of the mounting plate and used for mounting the whole bus bar main body.

Furthermore, the center of the main plane of the second connecting plate of the mounting plate is fixedly connected with the insulating bottom plate through a plurality of M8 bolts I.

Furthermore, four bolts I are arranged and are respectively connected with four corners of the insulating bottom plate.

Furthermore, the insulating bottom plate is fixedly connected with the grounding plate through a plurality of M8 bolts II.

Furthermore, four bolts II are arranged and are respectively connected with four corners of the grounding plate.

Furthermore, a rib plate is welded at the center of the back of the mounting plate.

Furtherly, there is 90 mm's extension district mounting panel below, and the backing plate bonds in the extension district bottom, and the material of backing plate is nylon.

Furthermore, after each bolt is fixed, the counter bore needs to be filled and flattened by insulating sealant.

Compared with the prior art, the utility model has the advantages of it is following:

1. the utility model provides a four post busbar suitable for city rail train axle head ground connection provides a new design under the nervous condition of city rail train chassis installation space. A plurality of negative lines of equipment and a shaft end grounding line are gathered in one bus bar, and the space of the underframe is utilized to the maximum extent.

2. The utility model provides a four post busbar suitable for city rail train axle head ground connection will be two function that the busbar could just realize in the past, change into a busbar. And the cost is saved.

3. The utility model provides a four post busbar suitable for city rail train axle head ground connection can with the utility model discloses the ground connection scheme who contains is followed to be used to the nervous city rail motorcycle type in other chassis wiring spaces, has the popularization nature.

Based on the above reason the utility model discloses can extensively promote in fields such as the ground connection of the negative line of city rail train equipment or ground wire.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required to be used in the description of the embodiments or the prior art are briefly introduced below, and it is obvious that the drawings in the following description are some embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to these drawings without inventive labor.

Fig. 1 is the utility model relates to an equipment diagram of four post busbar suitable for city rail train axle head ground connection.

Fig. 2 isbase:Sub>A cross-sectional view taken atbase:Sub>A-base:Sub>A in fig. 1.

Fig. 3 is a cross-sectional view taken at B-B in fig. 1.

Fig. 4 is a top view of the present invention.

Fig. 5 is a schematic view of the Tc truck equipment mounting axle end grounding position.

In the figure: 1. an insulating base plate; 2. a ground plate; 3. mounting a plate; 4. a bolt I; 5. a nut I; 6. A spring washer I; 7. a flat washer I; 8. a bolt; 9. a nut; 10. a spring washer; 11. a flat washer; 12. A rib plate; 13. a backing plate.

Detailed Description

In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are some, but not all, embodiments of the present invention. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative efforts all belong to the protection scope of the present invention.

In order to solve the problems existing in the prior art, as shown in figures 1-4, the utility model provides a four-column bus bar suitable for the axle head grounding of an urban rail train, which aims to solve the problem that the existing device can not meet the specific function. Under the conditions that the underframe is in spatial arrangement and the negative line of the electrical equipment is inconvenient to run, the number of the binding posts specially used for the shaft end grounding busbar is increased, and a convenient negative line grounding scheme is provided for the train underframe.

The four-column busbar suitable for urban rail train shaft end grounding comprises: the insulation bottom plate 1, the grounding plate 2 and the mounting plate 3, in fig. 2, the mounting plate 3, the insulation bottom plate 1 and the grounding plate 2 are connected in sequence from left to right. 4M 10 bolts 8 (distributed in a row at equal intervals) are sequentially arranged in the transverse direction at the central positions of the insulating bottom plate 1 and the grounding plate 2 and are used for connecting the negative line of the train underframe equipment. The end part of the bolt 8 penetrating out of the grounding plate 2 is connected with a nut 9, and an elastic washer 10 and a flat washer 11 are also connected between the nut 9 and the grounding plate 2.

In the embodiment, the mounting plate 3 bent at a right angle forms an equipment main body, the mounting plate 3 comprises a first connecting plate arranged at the top and a second connecting plate connected with the first connecting plate in a bending way, the first connecting plate is fixedly connected with the shaft end of an urban rail train, and the second connecting plate is fixedly connected with the insulating bottom plate 1. The insulating bottom plate 1 is connected to the outer side of the second connecting plate of the mounting plate 3, and the grounding plate 2 is fixedly connected to the outer side of the insulating bottom plate 1.

Specifically, the principal plane central point of the second connecting plate of the mounting plate 3 is fastened with the insulating bottom plate 1 through four M8 bolts i 4 (four M8 bolts i 4 are connected at four corners of the insulating bottom plate 1 and symmetrically arranged about the center of the insulating bottom plate 1), and then fastened with the ground plate 2 through four M8 bolts ii on the insulating bottom plate 1 (four M8 bolts ii are connected at four corners of the ground plate 2 and symmetrically arranged about the center of the ground plate 2), so that the plane is ensured to be stable and level with the mounting plate 3. In the embodiment, the end part of the bolt I4 penetrating out of the insulating base plate 1 is connected with a nut I5, and an elastic washer I6 and a flat washer I7 are further connected between the nut I5 and the insulating base plate 1. The end part of the bolt II penetrating out of the grounding plate 2 is connected with a nut II, and an elastic washer II and a flat washer II are further connected between the nut II and the grounding plate 2. The bolt I4, the nut I5, the elastic washer I6 and the flat washer I7 are the same as the bolt II, the nut II, the elastic washer II and the flat washer II in structure and size.

In the present embodiment, two oblong holes of 13 × 20mm are formed in the top of the first connecting plate of the mounting plate 3, and the busbar body is mounted thereon. And a rib plate 12 is welded at the center of the back of the mounting plate 3 to ensure the mechanical strength, the top surface of the rib plate 12 is welded with the back of the first connecting plate, and the right side surface of the rib plate 12 is welded with the back of the second connecting plate.

In this embodiment, there is an extension area of 90mm below the mounting plate 3, and a nylon backing plate 13 is bonded to the bottom of the extension area. The two sides of the cable are provided with round holes with the diameter of 9mm, the center of the cable is provided with a long round hole with the diameter of 9 x 80mm (the long round hole and the two round holes jointly penetrate through the extension area and the backing plate 13), a cable clamp can be additionally arranged for fixation, and the grounding cable at the shaft end can be connected into the bus bolt from the left, the middle and the right selectable directions according to actual conditions. The rest binding posts can be used for grounding up to 7 negative wires except the end grounding cable, and have sufficient wiring space.

In the manufacturing process, after each bolt is fixed, the counter bore needs to be filled and leveled by insulating sealant. Wherein, the insulating bottom plate 1, the grounding plate 2 and the mounting plate 3 are respectively provided with a mounting hole for mounting each bolt.

Take the nigeria Las blue line electric motor train unit project as an example. The Tc chassis equipment of the project generally has larger size due to the requirement of the conventional type of the old project, so that the wiring space of the chassis is tense.

As shown in fig. 5, the SIV (auxiliary inverter) outlet is closer to the second bogie axle termination point, with a linear distance of about 700mm. The number of cables needing grounding nearby is 5, the space is compact, and the requirement of equipment grounding is not met by adding two busbars.

Therefore, when the Laves project is electrically designed, the utility model is adopted to connect the cables such as the shaft end grounding wire, the SIV negative wire, the bus grounding wire and the like.

Through dynamic debugging and inspection of the train, the bus bar mounting bolt is stable, the shaking amount of the cable meets the requirement, and the grounding performance is safe and reliable.

The key points of the technology of the invention are as follows: 1. in fig. 1, the mounting plate is in bolt fastening installation with the insulating bottom plate and the grounding plate. 2. In fig. 2, a nylon backing plate is bonded below the four-post bus bar in comparison with the area of the conventional four-post bus bar extending downward. The hole-opening mode on the nylon backing plate can adapt to the cable clamp for fixing the shaft end cable in different directions.

Finally, it should be noted that: the above embodiments are only used to illustrate the technical solution of the present invention, and not to limit the same; although the present invention has been described in detail with reference to the foregoing embodiments, it should be understood by those skilled in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some or all of the technical features may be equivalently replaced; such modifications and substitutions do not depart from the spirit and scope of the present invention.

Claims

1. The utility model provides a four post busbar suitable for city rail train axle head ground connection which characterized in that includes: the insulating bottom plate (1), the grounding plate (2) and the mounting plate (3), wherein the mounting plate (3) is mounted at the axle end of the urban rail train, the insulating bottom plate (1) is connected to the mounting plate (3), and the grounding plate (2) is connected to the insulating bottom plate (1);

the center positions of the insulating bottom plate (1) and the grounding plate (2) are jointly connected with 4M 10 bolts (8), and the 4 bolts (8) are sequentially arranged in a row at intervals in the transverse direction and are used for negative line connection of train underframe equipment;

there is the extension district mounting panel (3) below, and the extension district bottom is provided with backing plate (13), backing plate (13) run through with the middle part of extension district to open there is the slotted hole and distribute the round hole in the slotted hole both sides for at the used cable clamp of not equidirectional adaptation fixed axle end cable.

2. The four-column bus bar suitable for the axle end grounding of the urban rail train as claimed in claim 1, wherein the mounting plate (3) is bent at a right angle and comprises a first connecting plate arranged at the top and a second connecting plate connected with the first connecting plate in a bent manner, the first connecting plate is connected with the axle end of the urban rail train, and the second connecting plate is connected with the insulating bottom plate (1).

3. The four-column busbar suitable for grounding of axle ends of urban rail trains according to claim 2, wherein two oblong holes are formed in one connecting plate of the mounting plate (3) and used for mounting the whole busbar body.

4. The four-column bus bar suitable for the shaft end grounding of the urban rail train as claimed in claim 2, wherein the center position of the main plane of the second connecting plate of the mounting plate (3) is fixedly connected with the insulating bottom plate (1) through a plurality of M8 bolts I (4).

5. The four-column busbar suitable for grounding of axle ends of urban rail trains according to claim 4, wherein the number of the bolts I (4) is four, and the four bolts I (4) are respectively connected with four corners of the insulating bottom plate (1).

6. The four-column busbar suitable for grounding of urban rail train shaft ends according to claim 1, wherein the insulating bottom plate (1) is fixedly connected with the grounding plate (2) through a plurality of M8 bolts II.

7. The four-column busbar suitable for urban rail train shaft end grounding according to claim 6, wherein the number of the bolts II is four, and the four bolts II are respectively connected with four corners of the grounding plate (2).

8. The four-column busbar suitable for urban rail train shaft end grounding according to claim 1, wherein a rib plate (12) is welded at the center of the back surface of the mounting plate (3).

9. The four-column busbar suitable for urban rail train shaft end grounding according to claim 1, wherein an extension area of 90mm is arranged below the mounting plate (3), the base plate (13) is bonded at the bottom of the extension area, and the base plate (13) is made of nylon.

10. The four-column busbar suitable for grounding of an end of an urban rail train according to claim 1, 4, 5, 6 or 7, wherein after each bolt is fixed, a counter bore needs to be filled and leveled with an insulating sealant.