CN212434383U

CN212434383U - Novel current transformer for EMUs

Info

Publication number: CN212434383U
Application number: CN202020864718.6U
Authority: CN
Inventors: 孟建军; 胡文涛
Original assignee: Lanzhou Jiaotong University
Current assignee: Lanzhou Jiaotong University
Priority date: 2020-05-21
Filing date: 2020-05-21
Publication date: 2021-01-29
Anticipated expiration: 2030-05-21

Abstract

The utility model relates to the technical field of electrical systems, and discloses a novel current transformer for a motor train unit, which comprises an upper shell and a lower shell, wherein the upper shell and the lower shell are connected through a plurality of bolts and nuts; sealing device includes seal groove, draw-in groove, spring and seal block, and two seal grooves are seted up the upper end of casing under, and the draw-in groove is seted up on the position that corresponds the seal groove at last casing, and a plurality of spring fixed connection is at the tank bottom of seal groove evenly equidistance ground, and seal block sliding connection is in the seal groove, and the one end fixed connection that the seal groove tank bottom was kept away from to the spring is on the corresponding position of seal block, and the one end that the spring was kept away from to the seal block passes the notch of seal groove and. The utility model discloses make can fine play sealed effect, can let the current transformer life-span obtain better assurance, and reliable and stable.

Description

Novel current transformer for EMUs

Technical Field

The utility model relates to an electrical system technical field especially relates to a novel current transformer for EMUs.

Background

An outdoor bus type current transformer of a motor train unit is used as equipment for current measurement, real-time monitoring or relay protection in a vehicle-mounted control system of the motor train unit. The current transformers matched with the motor train units at present in China mainly have two types: one is a roof mounted outdoor bus type structure; the other is a bus-type structure arranged inside the vehicle body. The two structural products are imported products.

However, the existing junction box of the current transformer is not sealed tightly, and water or dust is easy to enter the current transformer after the junction box is used for a long time, so that the service life of the current transformer is greatly reduced.

Disclosure of Invention

The utility model aims at solving current transformer terminal box among the prior art and sealing not tight, lead to current transformer to intake easily after permanent use or dust, let the problem of current transformer life-span greatly reduced, and a novel current transformer for EMUs that proposes.

In order to achieve the above purpose, the utility model adopts the following technical scheme:

the utility model provides a novel current transformer for EMUs, includes casing and lower casing, go up and be connected through a plurality of bolt and nut between casing and the lower casing, go up and install sealing device between casing and the lower casing, go up the internal mutual-inductor main part that installs of casing and lower casing.

Sealing device includes seal groove, draw-in groove, spring and sealed piece, two the upper end of casing under is seted up to the seal groove, the draw-in groove is seted up on the position that corresponds the seal groove at last casing, a plurality of the even equidistance ground fixed connection of spring is at the tank bottom of seal groove, sealed piece sliding connection is in the seal groove, the one end fixed connection that the seal groove tank bottom was kept away from to the spring is on the corresponding position of sealed piece, the one end that the spring was kept away from to the sealed piece passes the notch of seal groove and extends to the draw-in groove that corresponds.

Preferably, a plurality of spacing groove has been seted up to the symmetry on the cell wall of seal groove, sliding connection has the spacing groove in the spacing groove, sliding connection has the stopper in the spacing groove, the one end that the spacing groove tank bottom was kept away from to the stopper passes the notch of spacing groove and outwards extends, and fixed connection is on the corresponding lateral wall of sealed piece.

Preferably, the limiting block is close to the one end of the limiting groove bottom and is provided with a ball groove, the ball groove is connected with a ball in a rolling manner, and one end, far away from the ball groove bottom, of the ball penetrates through the notch of the ball groove and extends outwards and is connected with the groove bottom of the limiting groove in a rolling manner.

Preferably, a rubber pad is arranged in the clamping groove, and the upper end and the lower end of the rubber pad are respectively abutted against the groove bottom of the clamping groove and the sealing block.

Preferably, the lower shell is fixedly connected with a mounting plate, and the mounting plate is mounted on the vehicle group through screws.

Preferably, the outer surfaces of the upper shell and the lower shell are coated with anticorrosive coatings.

Compared with the prior art, the utility model provides a novel current transformer for EMUs possesses following beneficial effect.

1. This novel current transformer for EMUs through setting up casing, lower casing, sealing device, seal groove, draw-in groove, spring, sealed piece and mutual-inductor main part, the spring is in the state of compression, and under the effect of spring, sealed piece is firmly supported on the tank bottom of draw-in groove for can fine play sealed effect, can let current transformer life-span obtain guaranteeing betterly.

2. This novel current transformer for EMUs through setting up spacing groove and stopper, drives the stopper at the spacing inslot removal when sealed piece removes in the seal groove in-process for the stopper has spacing effect at the spacing groove, lets sealed piece remove more reliable and stable in the seal groove.

The part that does not relate to in the device all is the same with prior art or can adopt prior art to realize, the utility model discloses make can fine play sealed effect, can let the current transformer life-span obtain better assurance, and reliable and stable.

Drawings

Fig. 1 is the utility model provides a novel current transformer for EMUs's structural schematic diagram.

Fig. 2 is a sectional view taken along line a-a in fig. 1.

Fig. 3 is an enlarged view of a portion B in fig. 2.

Fig. 4 is an enlarged view of a portion C in fig. 3.

In the figure: the transformer comprises an upper shell 1, a lower shell 2, a sealing device 3, a sealing groove 31, a clamping groove 32, a spring 33, a sealing block 34, a transformer body 4, a limiting groove 5, a limiting block 6, a ball groove 7, balls 8, a rubber pad 9 and a mounting plate 10.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the accompanying drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only some embodiments of the present invention, not all embodiments.

In the description of the present invention, it is to be understood that the terms "upper", "lower", "front", "rear", "left", "right", "top", "bottom", "inner", "outer", and the like indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings, and are only for convenience of description and simplicity of description, and do not indicate or imply that the device or element being referred to must have a particular orientation, be constructed and operated in a particular orientation, and therefore, should not be construed as limiting the present invention.

Referring to fig. 1-4, a novel current transformer for a motor train unit comprises an upper shell 1 and a lower shell 2, wherein the upper shell 1 and the lower shell 2 are connected through a plurality of bolts and nuts, a sealing device 3 is arranged between the upper shell 1 and the lower shell 2, and a transformer main body 4 is arranged in the upper shell 1 and the lower shell 2;

sealing device 3 includes seal groove 31, draw-in groove 32, spring 33 and seal block 34, two seal grooves 31 are seted up in the upper end of casing 2 down, draw-in groove 32 is seted up on the position that corresponds seal groove 31 at last casing 1, the even equidistance ground fixed connection of a plurality of spring 33 is at the tank bottom of seal groove 31, seal block 34 sliding connection is in seal groove 31, the one end fixed connection that spring 33 kept away from the tank bottom of seal groove 31 is on seal block 34's corresponding position, seal block 34 is kept away from the one end of spring 33 and is passed the notch of seal groove 31 and extend to corresponding draw-in groove 32 in, spring 33 is in the state of compression, under spring 33's effect, seal block 34 is firmly supported on the tank bottom of draw-in groove 32, make can fine play sealed effect, can let current transformer life obtain better assurance.

A plurality of spacing groove 5 has been seted up to the symmetry on the cell wall of seal groove 31, sliding connection has spacing groove 5 in the spacing groove 5, sliding connection has stopper 6 in the spacing groove 5, stopper 6 keeps away from the one end of 5 tank bottoms of spacing groove and passes the notch of spacing groove 5 and outwards extends, and fixed connection is on the corresponding lateral wall of sealed piece 34, move stopper 6 in spacing groove 5 when sealed piece 34 removes in-process in seal groove 31, make stopper 6 have spacing effect at spacing groove 5, let sealed piece 34 remove more reliable and more stable in seal groove 31.

The ball groove 7 has been seted up to stopper 6 one end near 5 tank bottoms of spacing groove, and ball groove 7 is interior to roll and is connected with ball 8, and ball 8 keeps away from the one end of 7 tank bottoms of ball groove and passes the notch of ball groove 7 and outwards extend, and with the tank bottom roll connection of spacing groove 5 for stopper 6 removes more smoothly in spacing groove 5.

A rubber pad 9 is arranged in the clamping groove 32, and the upper end and the lower end of the rubber pad 9 are respectively abutted against the groove bottom of the clamping groove 32 and the sealing block 34, so that a good sealing effect is achieved.

Fixedly connected with mounting panel 10 on casing 2 down, mounting panel 10 passes through the screw installation on the group of cars, and the whole device of being convenient for is installed.

The outer surfaces of the upper shell 1 and the lower shell 2 are coated with anticorrosive coatings, so that the anticorrosive coating plays a role in corrosion resistance.

The utility model discloses in, spring 33 is in the state of compression, and under spring 33's effect, sealed piece 34 is firmly supported on the tank bottom of draw-in groove 32 for can fine play sealed effect, can let the current transformer life-span obtain guaranteeing betterly.

The above, only be the concrete implementation of the preferred embodiment of the present invention, but the protection scope of the present invention is not limited thereto, and any person skilled in the art is in the technical scope of the present invention, according to the technical solution of the present invention and the utility model, the concept of which is equivalent to replace or change, should be covered within the protection scope of the present invention.

Claims

1. A novel current transformer for a motor train unit comprises an upper shell (1) and a lower shell (2), and is characterized in that the upper shell (1) and the lower shell (2) are connected through a plurality of bolts and nuts, a sealing device (3) is installed between the upper shell (1) and the lower shell (2), and a transformer main body (4) is installed in the upper shell (1) and the lower shell (2); sealing device (3) are including seal groove (31), draw-in groove (32), spring (33) and sealed piece (34), two the upper end of casing (2) under is seted up in seal groove (31), draw-in groove (32) are seted up on the position that last casing (1) corresponds seal groove (31), a plurality of spring (33) even equidistance ground fixed connection is at the tank bottom of seal groove (31), sealed piece (34) sliding connection is in seal groove (31), the one end fixed connection that seal groove (31) tank bottom was kept away from in spring (33) is on the corresponding position of sealed piece (34), the one end that spring (33) were kept away from in sealed piece (34) is passed the notch of seal groove (31) and is extended in to corresponding draw-in groove (32).

2. The novel current transformer for the motor train unit according to claim 1, wherein a plurality of limiting grooves (5) are symmetrically formed in the groove wall of the sealing groove (31), a limiting block (6) is slidably connected in the limiting groove (5), one end of the limiting block (6) far away from the groove bottom of the limiting groove (5) penetrates through a notch of the limiting groove (5) and extends outwards, and the limiting block is fixedly connected to a corresponding side wall of the sealing block (34).

3. The novel current transformer for the motor train unit as claimed in claim 2, wherein a ball groove (7) is formed in one end, close to the bottom of the limiting groove (5), of the limiting block (6), a ball (8) is connected in the ball groove (7) in a rolling manner, and one end, far away from the bottom of the ball groove (7), of the ball (8) penetrates through the notch of the ball groove (7) and extends outwards and is connected with the bottom of the limiting groove (5) in a rolling manner.

4. The novel current transformer for the motor train unit according to claim 1, wherein a rubber gasket (9) is arranged in the clamping groove (32), and the upper end and the lower end of the rubber gasket (9) are respectively abutted against the groove bottom of the clamping groove (32) and the sealing block (34).

5. The novel current transformer for the motor train unit according to claim 1, wherein a mounting plate (10) is fixedly connected to the lower shell (2), and the mounting plate (10) is mounted on a train set through screws.

6. The novel current transformer for the motor train unit according to claim 1, wherein the outer surfaces of the upper shell (1) and the lower shell (2) are coated with an anti-corrosion coating.