CN218447581U

CN218447581U - Clamping type low-voltage large-current cut-off and closing device

Info

Publication number: CN218447581U
Application number: CN202222060616.0U
Authority: CN
Inventors: 李少华; 丁辉; 兰升琪
Original assignee: Baoji Baoti Equipment Technology Co ltd
Current assignee: Baoji Baoti Equipment Technology Co ltd
Priority date: 2022-08-06
Filing date: 2022-08-06
Publication date: 2023-02-03
Anticipated expiration: 2032-08-06

Abstract

The utility model discloses a centre gripping formula low-voltage heavy current cuts off closing device, including being located the electricity copper bar that advances on the same axis and going out the electricity copper bar, the cross section of advancing electricity copper bar and going out the electricity copper bar sets up relatively and has the clearance, the bilateral symmetry of advancing electricity copper bar and going out electricity copper bar place axis is provided with electrically conductive copper, electrically conductive copper is just right advance the clearance between electricity copper bar and the play electricity copper bar cross section, electrically conductive copper insulation connection has flexible drive assembly, flexible drive assembly drive electrically conductive copper with the side of advancing electricity copper bar, play electricity copper bar contacts or keeps away from mutually. The utility model discloses a to advance the electric copper bar and go out the electric copper bar along same axis setting, then set up by flexible power component driven electrically conductive copper in its both sides, utilize flexible power component drive electrically conductive copper centre gripping to advance the electric copper bar and go out the electric copper bar and make the circuit switch on or cut off, its closure, off-state are good, do not have virtual joint and contact surface phenomenon of generating heat.

Description

Clamping type low-voltage large-current cutting-off and closing device

Technical Field

The utility model belongs to the technical field of the switchgear for the smelting equipment, in particular to centre gripping formula low-voltage heavy current cuts off closing device.

Background

The application of the large-current technology in the aspects of electric energy production, transmission, transformation, control and the like is more and more extensive, but the damage of equipment and even larger safety accidents can be caused when the damage of the thermal effect, the magnetic effect and the like existing in the large current is serious.

In some specific environments such as electric arc furnace smelting, large current electric control is adopted, the equipment and a power supply need to be switched off and on, and a copper bar with lower resistivity is generally adopted for large current transmission to reduce electric energy loss.

The electric control switch used in the existing electric arc smelting furnace is mostly a converter switch, the converter switch is based on the principle that a motor drives one group of blade copper bars to be inserted into the other group of blade copper bars in a rotating manner, in order to ensure that the copper bars are tightly attached and the electric conduction effect is good, the copper bars must be inserted under pressure, and the insertion process has great friction resistance, which can cause the motor to be burnt out due to overload; and because the copper bar must take the friction screw in, the copper bar takes place to warp very easily, can make frictional force bigger after warping, and the copper bar warp and must influence conducting resistance, lead to this kind of switch copper bar contact failure, bad when well, thereby arouse very easily to generate heat, generate heat and more aggravate the copper bar and warp, general electric arc furnace is smelted and is needed 4-8 hours long-time uninterrupted duty, if the motor overload burns out, contact failure influences and smelt and all probably cause the blowing out, cause very big economic loss and potential safety hazard.

SUMMERY OF THE UTILITY MODEL

The utility model discloses a main aim at provides a centre gripping formula low-voltage heavy current cuts off closing device, has solved the transcription switch that smelting equipment used among the prior art and caused the motor to overload easily and burn out and the copper bar takes place to warp easily and leads to the problem that the incident takes place when using.

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

the embodiment of the utility model provides a centre gripping formula low-voltage heavy current cuts off closing device, including being located the incoming copper bar and going out the electric copper bar on the same axis, the cross section of incoming copper bar and going out the electric copper bar sets up relatively and has the clearance, the bilateral symmetry of incoming copper bar and going out the electric copper bar place axis is provided with conductive copper, conductive copper is just right advance electric copper bar and go out the clearance between the electric copper bar cross section, conductive copper insulating connection has flexible drive assembly, flexible drive assembly drive conductive copper with the side of incoming copper bar, play electric copper bar contacts or keeps away from mutually.

In a possible implementation manner, the conductive copper plate, the power-in copper bar and the power-out copper bar are located on the same plane.

In a possible implementation manner, the widths of the electricity inlet copper bar and the electricity outlet copper bar are consistent, and the cross sections of the electricity inlet copper bar and the electricity outlet copper bar are matched.

In a possible implementation manner, the conductive copper plate is hinged to an output end of the telescopic driving assembly on the side through a hinge mechanism.

In one possible implementation, the centers of a pair of the telescopic drive assemblies are located on the same straight line.

In a possible implementation manner, the axes of the electricity inlet copper bars and the electricity outlet copper bars are perpendicular to the center line of the pair of telescopic driving assemblies.

In one possible implementation, the clamping type low-voltage high-current cut-off closing device further comprises a mounting frame, and the telescopic driving assembly is fixed on the mounting frame.

In a possible implementation manner, the electricity inlet copper bar and the electricity outlet copper bar are fixed on the installation frame, and the electricity inlet copper bar and the electricity outlet copper bar are both arranged in an insulating manner on the installation frame.

In one possible implementation manner, the electric copper inlet bars and the electric copper outlet bars are single-row or multi-row.

In one possible implementation, the telescopic driving component is a driving cylinder or a driving oil cylinder.

Compared with the prior art, the utility model discloses a centre gripping formula low-voltage big circuit cuts off closing device beneficial effect includes at least:

the utility model discloses a to advance electric copper bar and go out electric copper bar and set up along same axis, then set up by flexible power component driven electrically conductive copper in its both sides, utilize flexible power component drive electrically conductive copper centre gripping to advance electric copper bar and go out electric copper bar and make the circuit switch on or cut off, its closure, off-state are good, do not have virtual joint and contact surface phenomenon of generating heat, do not have female uneven deformation of arranging atress. And the utility model discloses use fail safe nature high, stable performance on vacuum consumable electric arc melting furnace, to the long-time incessant use of equipment improved the guarantee, reduce the economic loss that unexpected blowing out caused.

Drawings

Fig. 1 is a schematic view of the structure of the clamping type low-voltage large-current cutting and closing device of the present invention.

In the figure: 1-telescopic driving component, 2-electricity inlet copper bar, 3-electricity outlet copper bar, 4-conductive copper plate, 5-hinge mechanism and 6-mounting frame.

Detailed Description

The technical solutions in the embodiments of the present invention will be described clearly and completely with reference to the 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, the embodiment of the present invention discloses a clamping type low-voltage large-current breaking and closing device, which is suitable for a low-voltage large-current circuit breaking and closing device with a voltage not greater than 100V and a current of 10 kA-50 kA. Its structure is including being located the same epaxial electricity copper bar 2 and play electricity copper bar 3, the cross section of entering electricity copper bar 2 and play electricity copper bar 3 sets up relatively and has the clearance, the bilateral symmetry of the line of entering electricity copper bar 2 and play electricity copper bar 3 place axis is provided with electrically conductive copper 4, electrically conductive copper 4 is just to the both sides of entering electricity copper bar 2 and play electricity copper bar 3 cross section clearance, electrically conductive copper 4 is connected with flexible drive assembly 1, insulating connection between flexible drive assembly 1 and the electrically conductive copper 4, flexible drive assembly 1 drive electrically conductive copper 4 and electricity copper bar 2, the side of play electricity copper bar 3 contacts or keeps away from mutually.

The embodiment of the utility model provides a to advance electric copper bar 2 and go out 3 relative settings of electric copper bar, make and advance electric copper bar 2 and go out electric copper bar 3 and be located same axis, then the both sides side in clearance sets up a conductive copper plate 4 respectively between advancing electric copper bar 2 and going out electric copper bar 3, drive through flexible drive assembly 1 makes conductive copper plate 4 will advance electric copper bar 2 and go out to switch on between the electric copper bar 3, utilize both sides conductive copper plate 4 to advance electric copper bar 2 and go out electric copper bar 3 and carry out the symmetry centre gripping, the laminating is inseparable between the three, advances electric copper bar 2 and 3 symmetrical extrusion forces that receive of play electric copper bar, the utility model discloses a centre gripping mode can not lead to into electric copper bar 2, go out electric copper bar 3 and conductive copper plate 4 deformation, consequently can keep the utility model discloses a conductive structure is stable, resistance can not change.

And the gap distance between the cross sections of the electricity inlet copper bar 2 and the electricity outlet copper bar 3 is determined according to the size of the conducting current, and the phenomenon of arc discharge does not occur only when the cutting-off is required.

In order to ensure that the conductive copper plate, the electricity inlet copper bar 2 and the electricity outlet copper bar 3 are completely attached, the conductive copper plate 4, the electricity inlet copper bar 2 and the electricity outlet copper bar 3 are positioned on the same plane. The widths of the electricity inlet copper bar 2 and the electricity outlet copper bar 3 are consistent, the cross sections of the electricity inlet copper bar 2 and the electricity outlet copper bar 3 are matched, and the load current of the conductive copper bar 4 is equivalent to the load current of the electricity inlet copper bar 2 and the load current of the electricity outlet copper bar 3.

Further, the conductive copper plate 4 is hinged to the output end of the telescopic driving component 1 on the side through a hinge mechanism 5. Through articulating electrically conductive copper 4 on flexible drive assembly 1's output end for electrically conductive copper 4 takes place certain angular rotation when laminating in advancing electric copper bar 2, play electric copper bar 3 side, thereby even electrically conductive copper 4 with advance electric copper bar 2, play electric copper bar 3 side forms certain angular error, also can make electrically conductive copper 4 and advance electric copper bar 2 and play electric copper bar 3 in close contact with automatically, reduce the contact department of gap resistance prevention and generate heat.

Further, the centers of the pair of telescopic driving assemblies 1 are located on the same straight line. The axes of the power inlet copper bar 2 and the power outlet copper bar 3 are vertical to the central line of the pair of telescopic driving components 1. The symmetry uses the same flexible drive assembly 1 can make both sides electrically conductive copper bar 4 exert the power the same on advancing electric copper bar 2 and going out electric copper bar 3, advances electric copper bar 2 and goes out electric copper bar 3 and can not bending deformation and set up perpendicularly and can make electrically conductive copper bar laminate in the both sides face of advancing electric copper bar 2 and going out electric copper bar 3 completely.

Preferably, the utility model discloses clamping type low voltage heavy current cuts off closing device still includes installation frame 6, and flexible drive assembly 1 is fixed on installation frame 6. Through with flexible drive assembly 1 fixed mounting on installation frame 6 for the concertina movement of flexible drive assembly 1 is more stable, and then makes the moving direction of conductive copper bar 4 more stable.

The mounting frame 6 for fixing the cylinder 1 and the conductive copper plate 4 is not in contact with the power copper inlet bar 2 and the power copper outlet bar 3, namely, the current on the power copper inlet bar 2 and the power copper outlet bar 3 can not pass through the mounting frame 6. Further, in order to make the rigidity that advances electric copper bar 2 and play electric copper bar 3, thereby make the utility model discloses a device each parts rigidity can not influence the device normal work because of the part shifts after long-term the use, therefore will advance electric copper bar 2 and play electric copper bar 3 and fix on installation frame 6, nevertheless installation frame 6 need be with conductive copper bar 4, advance electric copper bar 2 and play electric copper bar 3 and be insulation treatment.

Further, the power-in copper bar 2 and the power-out copper bar 3 can be single-row or multi-row according to the magnitude of the on-off current.

When the telescopic copper busbar clamp is used, the telescopic driving assembly 1 can drive the conductive copper plate 4 to be clamped on the power-in copper bar 2 and the power-out copper bar 3 by pushing, so that the power-in copper bar 2 and the power-out copper bar 3 are conducted and closed through the bridge action of the conductive copper plate 4; when the output end of the telescopic driving component 1 retreats, the conductive copper plate 4 is driven to be separated from the power-in copper bar 2 and the power-out copper bar 3 so as to cut off the circuit.

Exemplarily, the telescopic driving assembly 1 of the embodiment of the present invention may be a driving cylinder or a driving oil cylinder, and of course, other telescopic power devices may also be adopted. The driving cylinder or the driving oil cylinder can realize the clamping locking state after the conductive copper bar 4 clamps the incoming copper bar 2 and the outgoing copper bar 3, and the conductive copper bar 4 is prevented from loosening in the working process.

It should be noted that, in this document, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions. Also, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus.

Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.

Claims

1. The utility model provides a centre gripping formula low-voltage heavy current cuts off closing device, its characterized in that, including advancing electric copper bar (2) and play electric copper bar (3) that are located same axis, the cross section that advances electric copper bar (2) and play electric copper bar (3) sets up relatively and has the clearance, the bilateral symmetry of advancing electric copper bar (2) and play electric copper bar (3) place axis is provided with electrically conductive copper (4), electrically conductive copper (4) are just right advance electric copper bar (2) and play clearance between electric copper bar (3) cross section, electrically conductive copper (4) are connected with flexible drive assembly (1), flexible drive assembly (1) with insulating connection between electrically conductive copper (4), flexible drive assembly (1) drive electrically conductive copper (4) with the side of advancing electric copper bar (2), play electric copper bar (3) contacts or keeps away from mutually.

2. The clamping type low-voltage high-current cut-off and close device as claimed in claim 1, wherein the conductive copper plate (4) and the power-in copper bar (2) and the power-out copper bar (3) are on the same plane.

3. The clamping type low-voltage large-current cut-off and closing device as claimed in claim 1, wherein the width of the electricity inlet copper bar (2) is consistent with that of the electricity outlet copper bar (3), and the cross sections of the electricity inlet copper bar (2) are matched with that of the electricity outlet copper bar (3).

4. The clamping type low-voltage high-current cut-off and close device as claimed in claim 1, wherein the conductive copper plate (4) is hinged to the output end of the telescopic driving component (1) on the side through a hinge mechanism (5).

5. A clamped low voltage high current disconnect closure device according to claim 4, wherein the centers of a pair of the telescoping drive assemblies (1) are located on a common line.

6. The clamping type low-voltage large-current cut-off and close device as claimed in claim 5, wherein the axes of the power-in copper bar (2) and the power-out copper bar (3) are perpendicular to the central line of the pair of telescopic driving assemblies (1).

7. A clamped low voltage high current breaking and closing device according to claim 1, further comprising a mounting frame (6), wherein the telescopic driving assembly (1) is fixed on the mounting frame (6).

8. The clamping type low-voltage large-current cut-off and close device as claimed in claim 7, wherein the power-in copper bar (2) and the power-out copper bar (3) are fixed on the mounting frame (6), and the power-in copper bar (2) and the power-out copper bar (3) are both arranged in an insulating way with the mounting frame (6).

9. The clamping type low-voltage large-current cut-off and closing device as claimed in claim 1, wherein the power-in copper bars (2) and the power-out copper bars (3) are single-row or multi-row.

10. A clamped low voltage high current breaking and closing device according to claim 1, wherein the telescopic driving assembly (1) is a driving cylinder or a driving oil cylinder.