CN209104094U - A kind of short-circuit device applied to breaker - Google Patents
A kind of short-circuit device applied to breaker Download PDFInfo
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- CN209104094U CN209104094U CN201821831625.2U CN201821831625U CN209104094U CN 209104094 U CN209104094 U CN 209104094U CN 201821831625 U CN201821831625 U CN 201821831625U CN 209104094 U CN209104094 U CN 209104094U
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- breaker
- connecting rod
- copper bar
- short
- mounting rack
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Abstract
The utility model provides a kind of short-circuit device applied to breaker, it includes mounting rack, mounting rack is fixedly connected on breaker, two connecting rods being arranged symmetrically are provided on mounting rack, one end of connecting rod is rotationally connected on mounting rack, sliding slot is provided on the opposite other end, short circuit copper bar is also set up on mounting rack, copper bar is shorted to contact with the outlet copper bar on breaker, being shorted copper bar has symmetrical two connecting rod, connecting rod is rotationally connected on mounting rack by shaft, the rotary shaft in sliding slot is additionally provided in connecting rod, lever is provided between two connecting rods, lever is rotationally set on the shaft, lever also passes through an at least spring connection at least connecting rod.It leads to the problem of arcing between contact when the utility model can solve breaker open operation in the prior art and influences the breaker service life.
Description
Technical field
The utility model relates to field of circuit breakers, in particular to a kind of short-circuit device applied to breaker.
Background technique
Dual-power device is generally made of two breakers, and the regular situation of this Dual-power device is two breakers
Using electrical interlocks.Conventional currently on the market to form Y- Δ start-up circuit using three contactor combinations: basic principle is just
It is: first uses the Y type mode of connection when starting, so that electric machine step-down starting, reduction system loading in this way prevents from overloading；Motor Y type opens
After the completion of dynamic, it is switched to the △ type mode of connection, motor runs well.Effective protection motor and circuit system in this way, prevent electricity
Flow through load, it is not easy to burn.
Star delta reduced-voltage starting, exactly to change motor winding connection method, to achieve the purpose that reduced-voltage starting.When starting,
By main contactor by power supply to three head ends of the motor of delta connection, by asterism contactor by the electronic of delta connection
Three tail ends of machine are closed.Winding has reformed into star connection, and after start completion, asterism contactor disconnects running contact device will be electric
Three tail ends of the source to motor.Winding has reformed into delta connection.The operating of motor total pressure.Entire start-up course is by the time
Relay is completed to command.Asterism contactor and running contact device must be carried out chain.
Mainly include three state points in breaker used at present, respectively threads off, detains (separating brake) again and close
Lock.For current breaker in separating brake, switching is if there is slow or failure, it is easy to cause the arcing between contact, make
It is adhered at contact, is easily reduced the service life of contact.
Utility model content
In consideration of it, the utility model provides a kind of short-circuit device applied to breaker, it is intended to realize two breakers
It is combined into the function that star triangle electric unit is shorted state, and can solve and be shorted contact and static contact when being shorted contact separating action
Initial arcing and the problem of influence the breaker service life.
The utility model provides a kind of short-circuit device applied to breaker comprising mounting rack, mounting rack is fixed to be connected
It is connected on breaker, two connecting rods being arranged symmetrically is provided on mounting rack, one end of connecting rod is rotationally connected on mounting rack, is opposite
The other end on be provided with sliding slot, also set up short circuit copper bar on mounting rack, be shorted copper bar and contacted with the outlet copper bar on breaker,
Being shorted copper bar has symmetrical two connecting rod, and connecting rod is rotationally connected on mounting rack by shaft, is additionally provided in connecting rod
Rotary shaft in sliding slot is provided with lever between two connecting rods, and lever is rotationally set on the shaft, lever also pass through to
A few spring connects an at least connecting rod.
Further, above-mentioned mounting rack includes pedestal, and the opposite end of pedestal is connected separately with two mounting plates, connecting rod and company
Extension bar is both connected to the inside of mounting plate.
Further, above-mentioned mounting plate is in a rectangular trapezoid.
Further, above-mentioned sliding slot is the notch being opened on the end of connecting rod.
Further, above-mentioned notch is arc notch.
Further, connecting shaft is provided on above-mentioned connecting rod, the end of spring is fixedly connected with connecting shaft.
Further, above-mentioned outlet copper bar is fixedly installed on inverted T shape bracket.
A kind of short-circuit device applied to breaker provided by the utility model, the lever system in short-circuit device can be protected
Card is shorted copper bar and is maintained at short circuit position or disengaged position in action process, only when lever system reaches limit of sports record
When, just to be shorted copper bar movement, and the movement is under spring force, it is ensured that switching is effective rapidly, reduces between contact
Arcing, while reducing contact and being adhered, to increase the service life of contact.
Detailed description of the invention
By reading the following detailed description of the preferred embodiment, various other advantages and benefits are common for this field
Technical staff will become clear.The drawings are only for the purpose of illustrating a preferred embodiment, and is not considered as practical to this
Novel limitation.And throughout the drawings, the same reference numbers will be used to refer to the same parts.In the accompanying drawings:
Figure 1A is that a kind of short-circuit device applied to breaker for providing of embodiment is in the initial state in the utility model
Structural schematic diagram；
Figure 1B is that a kind of lever system for short-circuit device applied to breaker that embodiment provides in the utility model exists
Structural schematic diagram under original state；
Fig. 2A be in the utility model a kind of short-circuit device applied to breaker for providing of embodiment under short circuit state
Structural schematic diagram；
Fig. 2 B is that a kind of lever system for short-circuit device applied to breaker that embodiment provides in the utility model exists
Structural schematic diagram under short circuit state；
Fig. 3 is a kind of perspective view for short-circuit device applied to breaker that embodiment provides in the utility model；
Fig. 4 A is that a kind of short-circuit device applied to breaker that embodiment provides in the utility model is installed to breaker
Structural schematic diagram in the initial state afterwards；
Fig. 4 B is that a kind of short-circuit device applied to breaker that embodiment provides in the utility model is installed to breaker
Structural schematic diagram under motion state afterwards；
Fig. 4 C is that a kind of short-circuit device applied to breaker that embodiment provides in the utility model is installed to breaker
Structural schematic diagram under short circuit state afterwards.
Specific embodiment
Exemplary embodiments of the present disclosure are described in more detail below with reference to accompanying drawings.Although showing the disclosure in attached drawing
Exemplary embodiment, it being understood, however, that may be realized in various forms the disclosure without should be by embodiments set forth here
It is limited.On the contrary, these embodiments are provided to facilitate a more thoroughly understanding of the present invention, and can be by the scope of the present disclosure
It is fully disclosed to those skilled in the art.
Referring to Figure 1A to Fig. 4 C, a kind of short circuit applied to breaker provided by the embodiment of the utility model is shown in figure
Device comprising mounting rack 1, mounting rack 1 are fixedly connected on breaker 2, and two connecting rods being arranged symmetrically are provided on mounting rack 1
11, one end of connecting rod 11 is rotationally connected on mounting rack 1, is provided with sliding slot 111 on the opposite other end, also sets on mounting rack 1
It sets and is shorted copper bar 12, be shorted copper bar 12 and contacted with the outlet copper bar 21 on breaker 2, being shorted copper bar 12 has symmetrical two connection
Bar 121, connecting rod 121 are rotationally connected on mounting rack 1 by shaft 122, are additionally provided in connecting rod 121 positioned at sliding slot 111
Interior rotary shaft 123 is provided with lever 13 between two connecting rods 11, and lever 13 is rotationally set in shaft 122, and lever 13 is also
A connecting rod 11 is connected by a spring 14, can also all pass through spring 14 with both sides and connect two connecting rods 11.
Referring to Figure 1A to Fig. 3, mounting rack 1 includes pedestal 15, and the opposite end of pedestal 15 is connected separately with two mounting plates
151, connecting rod 11 and connecting rod 121 are both connected to the inside of mounting plate 151；Mounting plate 151 is in a rectangular trapezoid.Pass through above structure
Setting, overall structure can be made more firm.
With continued reference to Figure 1A to Fig. 3, sliding slot 111 is the notch being opened on the end of connecting rod 11, and notch is specifically as follows
Arc notch.By the setting of above structure, the cooperation of sliding slot and rotary shaft can be made more effective.
With continued reference to Figure 1A to Fig. 3, connecting shaft 141 is provided on connecting rod 11, the end of spring 14 is fixedly connected with connecting shaft
141.By the setting of above structure, the installation of spring can be made more firm.
With continued reference to Figure 1A to Fig. 3, outlet copper bar 21 is fixedly installed on inverted T shape bracket 22.Pass through above structure
Setting, the installation of outlet copper bar can be made more firm.
Three state points of normal circuit breaker are respectively to thread off, detain (separating brake) again and close a floodgate, the breaker of the present embodiment
Three state points are tripping, are shorted and close a floodgate.When original state, dynamic/static contact, which is in, to be disconnected, and end of incoming cables and leading-out terminal are non-conduction,
The breaker entirely electrically disconnects, and the off-state of entire electric loop is formed with the breaker of an other gate-dividing state.It is inverse
Hour hands rotate the handle of Special operation mechanism, push the circuit breaker handle of short connect function downward, arrive certain specific position, are shorted open circuit
Device is in short circuit state, and an other breaker rotates to "on" position.At this point, entire electric loop is in Y type starting shape
State.When this kind of state, entire electric loop is in smaller load, for 30% or so at full capacity.It is rotated counterclockwise again
When the operation handle of Special operation mechanism, the breaker of short connect function carries out feed motion, and an other breaker is kept not
It is dynamic, it is still in "on" position.At this point, entire electric loop is in triangular form starting state.When this kind of state, entire electrical time
Road is in and operates with full load.When finally continuing to rotate the operation handle of Special operation mechanism, the breaker of short connect function is transformed into
Trip status, and an other breaker is transformed into gate-dividing state.That is, two breakers return to original state, entire electricity
Air circuit is in initial off-state.
There are a short circuit copper bar in breaker with short connect function, end of incoming cables, Special operating handle are rotated clockwise, in open circuit
When device transfers short circuit state motion to by original state/trip status, operation handle pushes the sliding block being fixed on guide rail to transport downwards
It is dynamic.Slipper push is shorted the lever of copper bar, is shorted copper bar and moves around rotation center, transverse strands are in the three-phase outlet copper of breaker
On row, forms three-phase and be shorted.
Special operating handle rotate clockwise do short circuit movement when, handle pushes sliding block, the leverage in short circuit mechanism
System pulls the spring litter of short circuit mechanism to move to direction is shorted.It is shorted doing around the rotation center being located at below litter for copper bar
Counterclockwise movement, to when being shorted position, spring is in tension, makes to be shorted copper bar against inlet wire copper bar.When rotation counterclockwise
When Special operating handle, handle pushes sliding block, and the lever system in short circuit mechanism, which pushes, is shorted copper bar, finally with three-phase outlet copper
Row's separation.Two breakers are made to form triangular form electric state.
As seen in figs. 1 a-1b, the rotation center of lever is overlapped with copper bar rotation center is shorted, and the two is not fixed to each other.?
Original state, external force of the pull rod by the direction F1, pull rod remain stationary.Spring is in tensional state, then is located on connecting rod
Power of the fulcrum of spring by the direction F2.Connecting rod sliding slot is to the F3 power for being shorted copper bar generation horizontal direction.So that being shorted copper bar
The movement tendency rotated clockwise is done around its selection center.Due to limiting device, it is shorted copper bar and rests in enough electric clearances
Position.After thrust of the lever by the direction F4, rotated counterclockwise around its own rotation center.After rotating to certain angle, bullet
The pulling force of spring generation F5.Pulling force to the right is generated to connecting rod, sliding slot applies the power of F6 to copper bar is shorted.So that it is inverse to be shorted copper bar
Hour hands rotation.After short circuit copper bar rotates counterclockwise to certain angle, it is shorted copper bar contact face and breaker outgoing line copper bar contact face
It abuts, so that breaker outgoing line copper bar is shorted.Form short circuit state.The power for applying F1 horizontally to the right to lever, such as Figure 1A -1B institute
Show.Lever rotates clockwise, and when reaching Fig. 2A -2B, lever, connecting rod and short circuit copper bar are in a straight line, and spring force is in maximum
Tensional state is at this time a critical state.Until lever continues rotation counterclockwise, spring generates most the fulcrum on its connecting rod
Big pulling force, connecting rod sliding slot generate the maximum tangential force in entire motion process to copper bar is shorted.And at this point, be shorted copper bar only by
The clockwise torque that tangential force generates it.It is rapidly separated so that being shorted copper bar with outlet copper bar.The structure, in original state and
When short circuit state, it is only necessary to which lesser power can maintain the stability of two states, lesser when being especially shorted
Maintenance energy overcomes biggish spring tension, so that being shorted copper bar fits closely outlet copper bar.Meanwhile it being converted from short circuit to separation
When, being shorted copper bar can be rapidly separated with outlet copper bar, reduce arcing, reduce electric arc and burn to contact, increase its service life.
Thus, the lever system in short circuit mechanism can guarantee in action process, be shorted copper bar be maintained at be shorted position or
Person disengaged position.Only when lever system reaches limit of sports record, just to be shorted copper bar movement.And the movement is in spring force
Under effect, it is ensured that switching is effective rapidly, reduces the arcing between contact, reduces contact and is adhered, increases the service life of contact.
Obviously, it is practical without departing from this can to carry out various modification and variations to the utility model by those skilled in the art
Novel spirit and scope.If in this way, these modifications and variations of the present invention belong to the utility model claims and
Within the scope of its equivalent technologies, then the utility model is also intended to include these modifications and variations.
Claims (7)
1. a kind of short-circuit device applied to breaker, which is characterized in that including mounting rack (1), the mounting rack (1) is fixed to be connected
It is connected on breaker (2), two connecting rods (11) being arranged symmetrically, one end of the connecting rod (11) is provided on the mounting rack (1)
It is rotationally connected on the mounting rack (1), is provided with sliding slot (111) on the opposite other end, also set up on the mounting rack (1)
It is shorted copper bar (12), short circuit copper bar (12) contacts with the outlet copper bar (21) on the breaker (2), the short circuit copper bar
(12) there is symmetrical two connecting rod (121), the connecting rod (121) is rotationally connected with the mounting rack by shaft (122)
(1) on, the rotary shaft (123) in the sliding slot (111), two connecting rod are additionally provided on the connecting rod (121)
(11) it is provided between lever (13), the lever (13) is rotationally set on the shaft (122), the lever (13)
At least one connecting rod (11) is also connected by an at least spring (14).
2. a kind of short-circuit device applied to breaker according to claim 1, which is characterized in that the mounting rack (1)
Including pedestal (15), the opposite end of the pedestal (15) is connected separately with two mounting plates (151), the connecting rod (11) and described
Connecting rod (121) is both connected to the inside of the mounting plate (151).
3. a kind of short-circuit device applied to breaker according to claim 2, which is characterized in that the mounting plate
(151) in a rectangular trapezoid.
4. a kind of short-circuit device applied to breaker according to claim 1, which is characterized in that the sliding slot (111)
The notch on end to be opened in the connecting rod (11).
5. a kind of short-circuit device applied to breaker according to claim 4, which is characterized in that the notch is arc
Notch.
6. a kind of short-circuit device applied to breaker according to claim 1, which is characterized in that on the connecting rod (11)
It is provided with connecting shaft (141), the end of the spring (14) is fixedly connected with the connecting shaft (141).
7. a kind of short-circuit device applied to breaker according to claim 1, which is characterized in that the outlet copper bar
(21) it is fixedly installed on inverted T shape bracket (22).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821831625.2U CN209104094U (en) | 2018-11-06 | 2018-11-06 | A kind of short-circuit device applied to breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201821831625.2U CN209104094U (en) | 2018-11-06 | 2018-11-06 | A kind of short-circuit device applied to breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN209104094U true CN209104094U (en) | 2019-07-12 |
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ID=67158648
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201821831625.2U Active CN209104094U (en) | 2018-11-06 | 2018-11-06 | A kind of short-circuit device applied to breaker |
Country Status (1)
| Country | Link |
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| CN (1) | CN209104094U (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509687A (en) * | 2018-11-06 | 2019-03-22 | 安士缔(中国)电气设备有限公司 | A kind of short-circuit device applied to breaker |
-
2018
- 2018-11-06 CN CN201821831625.2U patent/CN209104094U/en active Active
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN109509687A (en) * | 2018-11-06 | 2019-03-22 | 安士缔(中国)电气设备有限公司 | A kind of short-circuit device applied to breaker |
| CN109509687B (en) * | 2018-11-06 | 2024-01-19 | 安士缔(中国)电气设备有限公司 | Be applied to short circuit device of circuit breaker |
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