CN213185255U - Novel grounding contact of circuit breaker handcart - Google Patents
Novel grounding contact of circuit breaker handcart Download PDFInfo
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- CN213185255U CN213185255U CN202022010841.4U CN202022010841U CN213185255U CN 213185255 U CN213185255 U CN 213185255U CN 202022010841 U CN202022010841 U CN 202022010841U CN 213185255 U CN213185255 U CN 213185255U
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- grounding
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- grounding contact
- circuit breaker
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Abstract
The utility model discloses a novel grounding contact of a circuit breaker handcart, which is arranged in a direct current switch cabinet for use, and comprises a grounding bar and a grounding contact finger, wherein the grounding bar comprises a first grounding bar and a second grounding bar, and the first grounding bar is fixedly connected with the direct current switch cabinet; the grounding contact fingers are symmetrically arranged on two sides of the second grounding row in pairs, and at least two pairs of the grounding contact fingers are arranged; the middle section of each pair of grounding contact fingers is a plane metal plate, and each pair of grounding contact fingers is connected with the second grounding bar through a bolt and nuts arranged at two ends of the bolt; the two ends of the grounding contact finger are both arc-shaped protruding towards one side of the second grounding bar, wherein one end of the grounding contact finger far away from the first grounding bar extends out of a section of metal plate along the tangent line of the arc, and a metal rod penetrating through and fixedly connected with the second grounding bar is arranged above the other end of the grounding contact finger. The utility model has the advantages of reliable and stable ground connection.
Description
Technical Field
The utility model relates to a direct current switch cabinet ground system especially relates to a circuit breaker handcart ground contact.
Background
The direct-current switch cabinet is applied to a power transformation system of rail transit, is a key part of a direct-current traction power supply system, and the stable operation of the equipment is related to the safety of operation. The direct current switch cabinet is generally designed by adopting a cabinet body and a handcart in a split mode, and the handcart can be conveniently pushed out by installing a direct current breaker. The direct current breaker is used as a switching element for cutting off faults, and arcing can be generated in the fault tripping process, or when the direct current breaker has a local fault, the main loop can generate a discharge phenomenon to a handcart shell. If the handcart is not reliably connected with the grounding contact, current cannot flow back to the grounding loop, and the electrified equipment can damage secondary equipment of the switch cabinet and threaten the personal safety of operators.
Ground contact on the current market adopts the elasticity steel loop to sticis the copper contact design of bending, and during the row of inserting of handcart inserted ground contact when the handcart pushes, two point contacts are adopted to this kind of connected mode, have following problem:
the grounding reliability of the two-point contact is poor;
in the pushing process of the handcart, the grounding bar and the grounding contact are possibly not in the same horizontal line due to installation errors, and the moving range of the grounding contact is too small, so that the handcart is difficult to insert into the grounding contact.
SUMMERY OF THE UTILITY MODEL
In view of the above-mentioned not enough that present circuit breaker handcart ground contact exists, the utility model provides a novel circuit breaker handcart ground contact can reliable and stable ground effect.
In order to achieve the above object, the embodiments of the present invention adopt the following technical solutions:
a novel circuit breaker handcart grounding contact is installed in a direct-current switch cabinet for use and comprises a grounding bar and a grounding contact finger, wherein the grounding bar comprises a first grounding bar and a second grounding bar which are fixedly connected and mutually perpendicular, and the first grounding bar is fixedly connected with the direct-current switch cabinet; the grounding contact fingers are symmetrically arranged on two sides of the second grounding row in pairs, and at least two pairs of grounding contact fingers are arranged; the middle section of each pair of grounding contact fingers is a plane metal plate, and each pair of grounding contact fingers is connected with one end of the second grounding bar, which is far away from the first grounding bar, through a bolt arranged on the middle section of each grounding contact finger and nuts arranged at two ends of the bolt; the two ends of the grounding contact finger are both arc-shaped protruding towards one side of the second grounding bar, one end far away from the first grounding bar extends out of a section of metal plate along the arc tangent line, and a metal rod penetrating through and fixedly connected with the second grounding bar is arranged above one end close to the first grounding bar.
In accordance with an aspect of the present invention, the ground contact fingers are two pairs.
According to an aspect of the present invention, a gasket is provided between the nut and the grounding contact finger.
According to an aspect of the invention, the gasket is provided with at least two.
In accordance with one aspect of the present invention, the gasket is a beryllium copper spring.
According to an aspect of the present invention, a metal rod passing through the ground bar and fixedly connected to the ground bar is also disposed below one end of the ground contact finger close to the first ground bar.
In accordance with one aspect of the present invention, the metal bar is a cotter pin.
The utility model discloses the advantage of implementing: at least two pairs of grounding contact fingers are arranged, so that at least four contact points are arranged; the first grounding contact finger is in an arc shape protruding to one side of the grounding bar, and one end of the third grounding contact finger, which is connected with the second grounding contact finger, is in an arc shape protruding to one side of the grounding bar, so that the grounding contact is more compact due to the arc shape; the other end of the third grounding contact finger is a metal plate extending along the tangent of the arc tail end of one end of the third grounding contact finger and is in an open shape, so that the plug row of the handcart can be easily inserted between two pairs of grounding contact fingers even if the plug row and the second grounding contact row are not strictly in the same plane. Therefore, the utility model has the advantages of the reliable stability of ground connection.
Drawings
In order to more clearly illustrate the technical solutions in the embodiments of the present invention, the drawings needed to be used in the embodiments will be briefly described below, and it is obvious that the drawings in the following description are only some embodiments of the present invention, and it is obvious for those skilled in the art that other drawings can be obtained according to these drawings without creative efforts.
Fig. 1 is a schematic structural view of a novel grounding contact of a circuit breaker handcart according to the present invention;
fig. 2 is a top view of a novel circuit breaker handcart ground contact.
Fig. 3 is the working principle schematic diagram of a novel circuit breaker handcart grounding contact.
Fig. 4 is an enlarged view of the dotted line area of fig. 3.
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. Based on the embodiments in the present invention, all other embodiments obtained by a person skilled in the art without creative work belong to the protection scope of the present invention.
As shown in fig. 1 and 2, a novel ground contact of a circuit breaker handcart is installed in a direct-current switch cabinet for use, and is characterized in that the novel ground contact of the circuit breaker handcart comprises a ground bar and a ground contact finger, the ground bar comprises a first ground bar 1 and a second ground bar 2 which are fixedly connected and mutually perpendicular, and the first ground bar is fixedly connected with the direct-current switch cabinet; the grounding contact fingers are symmetrically arranged on two sides of the second grounding row in pairs, and the two pairs of grounding contact fingers are arranged; the middle section 22 of the grounding contact finger is a plane metal plate, and each pair of grounding contact fingers is connected with one end of the second grounding bar, which is far away from the first grounding bar, through a bolt arranged on the middle section of the grounding contact finger and nuts arranged at two ends of the bolt; the two ends of the grounding contact finger are both arc-shaped protruding towards one side of the second grounding row, wherein one end 23 far away from the first grounding row also extends out of a section of metal plate along the arc tangent line, and a metal rod 3 which penetrates through and is fixedly connected with the second grounding row is arranged above one end 21 close to the first grounding row.
As shown in fig. 3 and 4, the handcart is in a pushing state, and the plug row of the handcart is inserted between the two pairs of grounding contact fingers to form four-point contact and reliable grounding. Because both ends of the first grounding contact finger are arc-shaped protruding to one side of the second grounding row, the arc-shaped grounding contact can be tighter, and the grounding reliability is improved. Because the end far away from the first grounding bar extends out of a section of metal plate along the arc tangent line and is in an opening shape, the plug row of the handcart can be easily inserted between two pairs of grounding contact fingers to form reliable grounding even if the plug row and the second grounding bar are not strictly positioned on the same plane. The second ground connection touches and indicates to be close to the one end top of first ground connection row is equipped with and passes the second ground connection row and with second ground connection row fixed connection's metal rod 3, push repeatedly at the handcart, push out and under the effect of gravity, the second ground connection touches and indicates to be close to the very easy upward movement of one end of first ground connection row, and the effect of metal rod is that to touch to ground and indicate to carry on spacingly.
As a preferable solution of this embodiment, the ground contact fingers are provided in two pairs. In other embodiments, the number of the grounding contact fingers can be set reasonably according to actual requirements.
As a preferable scheme of this embodiment, a spacer 4 is disposed between the nut and the grounding contact finger. The gasket can provide a certain elastic movement space for the grounding contact finger, and the metal fatigue of the grounding contact finger is delayed.
In a preferred embodiment of the present invention, two spacers are provided. Two pads can provide more elastic movement space for the grounding contact finger. In other embodiments, more gaskets can be arranged, and the implementation of the invention is not influenced.
As a preferable aspect of this embodiment, the gasket is a beryllium copper spring. The beryllium copper elastic sheet can still keep high tensile elasticity after long-term compression joint, and can still keep better performance at high temperature.
As a preferable solution of this embodiment, a metal rod that penetrates through the ground bar and is fixedly connected to the ground bar is also disposed below one end of the ground contact finger close to the first ground bar. Further limit the grounding contact finger.
Preferably, the metal rod is a cotter pin. The split pin is convenient to install, and different schemes such as bolts can be adopted in other embodiments.
The above description is only for the specific embodiments of the present invention, but the protection scope of the present invention is not limited thereto, and any changes or substitutions that can be easily conceived by those skilled in the art within the technical scope of the present invention are all covered by the protection scope of the present invention. Therefore, the protection scope of the present invention shall be subject to the protection scope of the claims.
Claims (7)
1. A novel grounding contact of a circuit breaker handcart is installed in a direct-current switch cabinet for use and is characterized by comprising a grounding row and a grounding contact finger, wherein the grounding row comprises a first grounding row and a second grounding row which are fixedly connected and mutually perpendicular, and the first grounding row is fixedly connected with the direct-current switch cabinet; the grounding contact fingers are symmetrically arranged on two sides of the second grounding row in pairs, and at least two pairs of grounding contact fingers are arranged; the middle section of each pair of grounding contact fingers is a plane metal plate, and each pair of grounding contact fingers is connected with one end of the second grounding bar, which is far away from the first grounding bar, through a bolt arranged on the middle section of each grounding contact finger and nuts arranged at two ends of the bolt; the two ends of the grounding contact finger are both arc-shaped protruding towards one side of the second grounding bar, one end far away from the first grounding bar extends out of a section of metal plate along the arc tangent line, and a metal rod penetrating through and fixedly connected with the second grounding bar is arranged above one end close to the first grounding bar.
2. The novel circuit breaker trolley ground contact of claim 1, wherein said ground contact fingers are two pairs.
3. The novel circuit breaker handcart grounding contact of claim 1, wherein a gasket is provided between the nut and the grounding contact finger.
4. The novel circuit breaker trolley ground contact of claim 3, wherein at least two of said pads are provided.
5. The novel circuit breaker handcart ground contact of claim 4, wherein the gasket is a beryllium copper spring.
6. The novel circuit breaker handcart grounding contact as claimed in claim 1, wherein a metal rod passing through the grounding bar and fixedly connected with the grounding bar is also arranged below one end of the grounding contact finger close to the first grounding bar.
7. The novel circuit breaker trolley ground contact of claim 1, wherein said metal bar is a cotter pin.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022010841.4U CN213185255U (en) | 2020-09-15 | 2020-09-15 | Novel grounding contact of circuit breaker handcart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202022010841.4U CN213185255U (en) | 2020-09-15 | 2020-09-15 | Novel grounding contact of circuit breaker handcart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN213185255U true CN213185255U (en) | 2021-05-11 |
Family
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202022010841.4U Active CN213185255U (en) | 2020-09-15 | 2020-09-15 | Novel grounding contact of circuit breaker handcart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN213185255U (en) |
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2020
- 2020-09-15 CN CN202022010841.4U patent/CN213185255U/en active Active
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CP03 | Change of name, title or address |
Address after: No. 1310, 13th Floor, Building 6, No. 666, Jinfenghuang Avenue, Jinniu High tech Industrial Park, Chengdu, Sichuan Province, 610036 Patentee after: Sichuan Tuoji Rail Transit Equipment Co.,Ltd. Address before: 201802 Shanghai Jiading District Liuxiang highway 918, 2, 1 story A area. Patentee before: SHANGHAI TOGEE METRO EQUIPMENT CO.,LTD. |
|
| CP03 | Change of name, title or address |