CN109360754B - Star-delta electric loop operation device applied to two circuit breakers - Google Patents
Star-delta electric loop operation device applied to two circuit breakers Download PDFInfo
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- CN109360754B CN109360754B CN201811322496.9A CN201811322496A CN109360754B CN 109360754 B CN109360754 B CN 109360754B CN 201811322496 A CN201811322496 A CN 201811322496A CN 109360754 B CN109360754 B CN 109360754B
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- 238000004804 winding Methods 0.000 description 3
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- 230000009977 dual effect Effects 0.000 description 2
- 238000000034 method Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004075 alteration Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 230000009467 reduction Effects 0.000 description 1
Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
- H01H9/26—Interlocking, locking, or latching mechanisms for interlocking two or more switches
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- Physics & Mathematics (AREA)
- Electromagnetism (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention provides a star-delta electric loop operating device applied to two circuit breakers, which comprises a first rod body and a second rod body, wherein the first rod body and the second rod body are both rotatably connected to a rotating shaft; the end part of the first rod body is provided with a control part, the rotating shaft penetrates through the control part, the edge of the control part is provided with a first guide surface, one end of the first guide surface is provided with a notch part, and the control part is also connected with a first stop block; the rotating shaft is also sleeved with a swing arm, a sliding space is formed in the swing arm, a sliding block capable of sliding is arranged in the sliding space, the sliding block is rotatably connected to the second rod body, the sliding block is connected with the rotating shaft through an elastic part, the sliding block is provided with a guide part extending to the surface of the second rod body, and the swing arm is also connected with a second stop block; the second rod body is provided with a second guide surface, and the guide part is in guide fit with the second guide surface. Compared with the prior art, the invention overcomes the defect that the motor cannot be started due to the failure of the control loop in the contactor scheme.
Description
Technical Field
The invention relates to the field of circuit breakers, in particular to a star-delta electric loop operating device applied to two circuit breakers.
Background
The dual power supply device is generally composed of two circuit breakers, and the conventional situation of the dual power supply device is that the two circuit breakers are electrically interlocked. At present, a Y-delta starting circuit is formed in a conventional three-contactor combined mode in the market; the basic principle is that: when the motor is started, a Y-shaped wiring mode is adopted, so that the motor is started in a step-down mode, and the load of the system is reduced to prevent overload; after the Y-type starting of the motor is completed, the motor is switched to a delta-type wiring mode, and the motor runs normally. Therefore, the motor and a circuit system are effectively protected, current overload is prevented, and the motor and the circuit system are not easy to burn.
Star-delta voltage reduction starting is realized by changing the connection method of a motor winding. When the motor is started, a main contactor supplies power to three head ends of the motor in the triangle connection mode, and a star point contactor closes three tail ends of the motor in the triangle connection mode. The windings become star connected and after start-up, the star point contactor disconnects the running contactor to power the motor to the three tails. The windings become delta-connected. The motor is operated at full pressure. The whole starting process is commanded to be completed by a time relay. The star point contactor and the run contactor must be interlocked.
The above-described solution currently used must add a control loop to control the three contactor actuation sequences. If the control loop is powered off, the Y-delta starting function cannot be realized by the scheme, and the motor cannot normally run.
Disclosure of Invention
In view of the above, the invention provides a star-delta electric loop operation device applied to two circuit breakers, which aims to solve the problem that a motor cannot be started due to power failure control loop electricity or control loop faults in the prior art.
The invention provides a star-delta electric loop operating device applied to two circuit breakers, which comprises a first rod body and a second rod body, wherein the first rod body and the second rod body are both rotatably connected to a rotating shaft;
the end part of the first rod body is provided with a control part, the rotating shaft penetrates through the control part, the edge of the control part is provided with a first guide surface, one end of the first guide surface is provided with a notch part, the control part is also connected with a first stop block, the first stop block is positioned at the other end of the first guide surface relative to the notch part, and the first stop block blocks the second rod body from the first side surface of the second rod body;
the rotating shaft is also sleeved with a swing arm, a sliding space is formed in the swing arm, a sliding block is arranged in the sliding space, the sliding block is rotatably connected to the second rod body and is overlapped with the second rod body, the sliding block is connected with the rotating shaft through an elastic part, the sliding block is provided with a guide part extending to the surface of the second rod body, the swing arm is also connected with a second stop block, the second stop block blocks the second rod body from the second side surface of the second rod body, and the second side surface is opposite to the first side surface;
the second rod body is provided with a second guide surface, and the guide part is in guide fit with the second guide surface.
Further, the first guiding surface is an arc guiding surface.
Further, the control component is a circular plate body.
Further, the sliding block is a waist-shaped block, the sliding space is a waist-shaped hole, and the length of the sliding space is larger than that of the sliding block.
Further, the notch part is an arc notch matched with the shape of the end part of the sliding block.
Further, the swing arm is a sector plate body.
Further, the second guiding surface is an inclined surface.
Further, the surface of the second rod body is provided with a bump, the bump is arranged along the first side face, the free end of the bump extends towards the free end of the second rod body, the free end of the bump is connected with a convex rib traversing the surface of the second rod body, and a second guide surface is formed on the outer side of the convex rib.
Further, the bottom of the sliding block is provided with a mounting base block, and the mounting base block is rotatably arranged in an area surrounded by the protruding block and the protruding rib.
Further, the guide member is a cylinder.
Compared with the prior art, the star-delta electric loop operating device applied to two circuit breakers and an electric control loop without contactors and the like, which adopts the pure mechanical manual starting scheme, effectively overcomes the defect that a motor cannot be started due to power failure or control loop failure of the control loop in the contactor scheme.
Drawings
Various other advantages and benefits will become apparent to those of ordinary skill in the art upon reading the following detailed description of the preferred embodiments. The drawings are only for purposes of illustrating the preferred embodiments and are not to be construed as limiting the invention. Also, like reference numerals are used to designate like parts throughout the figures. In the drawings:
fig. 1A is a schematic structural diagram of a star delta electric loop operating device applied to two circuit breakers in an initial state according to an embodiment of the present invention;
fig. 1B is a schematic structural view of a star delta electric circuit operating device (excluding swing arms) applied to two circuit breakers in an initial state according to an embodiment of the present invention;
fig. 1C is a schematic structural diagram of a swing arm of a star delta electric loop operating device applied to two circuit breakers in an initial state according to an embodiment of the present invention;
fig. 2A is a schematic structural view of a star delta electric loop operating device applied to two circuit breakers under an axial angle according to an embodiment of the present invention;
fig. 2B is a schematic structural view of a swing arm of a star delta electric loop operating device applied to two circuit breakers under an axial angle according to an embodiment of the present invention;
fig. 2C is a schematic structural view of a star delta electric circuit operating device (excluding a swing arm) applied to two circuit breakers at an axial angle according to an embodiment of the present invention;
fig. 3 is a schematic structural view of a first rod of a star delta electric loop operation device applied to two circuit breakers according to an embodiment of the present invention;
fig. 4A is a schematic structural diagram of a star delta electric loop operating device applied to two circuit breakers in a first state according to an embodiment of the present invention;
fig. 4B is a schematic structural view of a star delta electric circuit operating device (excluding swing arms) applied to two circuit breakers in a first state according to an embodiment of the present invention;
fig. 5A is a schematic structural diagram of a star delta electric loop operating device applied to two circuit breakers in a second state according to an embodiment of the present invention;
fig. 5B is a schematic structural diagram of a star delta circuit operation device (without swing arms) applied to two circuit breakers in a second state according to an embodiment of the present invention.
Detailed Description
Exemplary embodiments of the present disclosure will be described in more detail below with reference to the accompanying drawings. While exemplary embodiments of the present disclosure are shown in the drawings, it should be understood that the present disclosure may be embodied in various forms and should not be limited to the embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art.
Referring to fig. 1A to 5B, a star-delta electric circuit operating device for two circuit breakers according to an embodiment of the present invention is mainly provided with a first rod 1 and a second rod 2, where the first rod 1 and the second rod 2 are rotatably connected to a rotating shaft 3.
With continued reference to fig. 1A to 5B, the end of the first rod body 1 is provided with a control component 11, the rotating shaft 3 passes through the control component 11, the edge of the control component 11 is provided with a first guiding surface 12, one end of the first guiding surface 12 is provided with a notch 13, the control component 11 is also connected with a first stop block 14, the first stop block 14 is positioned at the other end of the first guiding surface 12 relative to the notch 13, and the first stop block 14 stops the second rod body 2 from a first side surface 21 of the second rod body 2. The control component 11 may be a circular plate body, and the first guiding surface 12 is an arc guiding surface, so that the whole control component is convenient to turn along with the first rod body, and an arc first guiding surface with a longer stroke is formed.
With continued reference to fig. 1A to 5B, the rotating shaft 3 is further sleeved with a swing arm 4, the swing arm 4 is provided with a sliding space 41, a slidable slider 42 is arranged in the sliding space 41, the slider 42 is rotatably connected to the second rod body 2, the slider 42 and the second rod body 2 are overlapped, the slider 42 is connected with the rotating shaft 3 through an elastic component 43 (specifically, a spring) and provided with a guide component 422 extending to the surface of the second rod body 2, the swing arm 4 is further connected with a second stop block 44, the second stop block 44 blocks the second rod body 2 from the second side surface 22 of the second rod body 2, and the second side surface 22 is opposite to the first side surface 21.
In a specific implementation, the slider 42 may be a kidney-shaped block, the sliding space 41 is a kidney-shaped hole, the length of the sliding space 41 is greater than the length of the slider 42, and the notch 13 may be an arc notch matching the shape of the end of the slider 42. Meanwhile, the swing arm 4 can be a sector plate body, and can be convenient for swinging.
With continued reference to fig. 1A to 5B, the second rod body 2 is provided with a second guiding surface 23, and the guiding member 422 is in guiding engagement with the second guiding surface 23, where the second guiding surface 23 may be specifically an inclined surface, and the guiding member 422 may be specifically a cylinder, and may form guiding engagement along the inclined surface.
With continued reference to fig. 1A to 5B, the surface of the second rod body 2 is provided with a bump 24, the bump 24 is arranged along the first side surface 21, a bump free end 241 of the bump 24 extends towards the free end direction of the second rod body 2, the bump free end 241 is connected with a protruding rib 25 traversing the surface of the second rod body 2, and the outer side of the protruding rib 25 forms the second guiding surface 23; the bottom of the slider 42 has a mounting base 421, and the mounting base 421 is rotatably mounted in an area surrounded by the projection 24 and the rib 25. By the arrangement of the structure, the installation of the sliding block and other parts can be stably realized in a limited space.
Fig. 1A-1C show the device in an initial state, with one circuit breaker in a tripped state and the other circuit breaker in a tripped state. At this time, the entire electric unit is in an open state.
When the initial state is switched to the first state, the shaft body shown in fig. 2A-2B is rotated clockwise to drive the swing arm 4. The sliding block 42 is nested in the swing arm 4, one end of the sliding block 42 is connected with the elastic component 43, and the other end of the elastic component 43 is connected to the rotating handle. When the swing arm 4 rotates clockwise, the slider 42 moves toward the direction of the rotating handle under the tensile force of the elastic member 43. With the first guide surface 12, a clockwise tangential movement is performed with the first guide surface 12. The first rod body 1 is provided with a notch 13. The slider 42 snaps into the notch portion 13 when moving clockwise. The sliding block 42 drives the first rod body 1 to continue to move clockwise. The first rod body 1 is provided with a first stop block 14. When the first rod 1 moves clockwise, the first stop block 14 drives the second rod 2. That is, the rotating handle drives the swing arm 4, the swing arm 4 drives the sliding block 42, the sliding block 42 drives the first rod body 1, and the first stop block 14 drives the second rod body 2. The parts move clockwise until they reach the first state shown in figures 3, 4A and 4B. At this time, the breaker in the open state is switched from open to closed, and the breaker in the tripped state is switched to the rebuckled state. And a short circuit module is arranged in the rebuckled circuit breaker, and the rebuckled state is a short circuit state. The whole electrical unit is in a Y-connection state.
When the first state of fig. 4A-4B is changed to the second state of fig. 5A-5B, the counterclockwise rotation shaft (handle part) is rotated, the slider 42 and the first rod 1 are still in the clamped state, and the counterclockwise rotation handle drives the first rod 1 to rotate counterclockwise. The motion drives the short circuit breaker to switch into a closing state. The second rod body 2 and the first rod body 1 are assembled in a concentric sliding way, and no external force acts. At this time, both the circuit breakers are in a closing state, and the whole electric unit is in triangular connection.
The rotation shaft body continues to move anticlockwise, the second rod body 2 is provided with a second guide surface 23, the sliding block 42 is provided with a guide part 422, the guide part 422 moves onto the second guide surface 23, the sliding block 42 overcomes the spring force and moves tangentially with the second guide surface 23, the sliding block 42 is separated from the notch part 13, the first rod body 1 does not move anticlockwise along with the rotation handle any more, the swing arm 4 continues to rotate anticlockwise, the swing arm 4 is provided with a second stop block 44, and the second stop block 44 rotates anticlockwise until being attached to the second rod body 2. The second rod body 2 is driven to move anticlockwise until a circuit breaker is switched from switching on to switching off. Meanwhile, the swing arm 4 presses a tripping button of another circuit breaker to enable the circuit breaker to be switched from switching-on to tripping. At this time, the whole electrical unit is in the open state, and the electrical unit is restored to the original state.
Therefore, compared with the prior art, the star-delta electric loop operating device applied to two circuit breakers and the electric control loops such as contactors are not used, and the purely mechanical manual starting scheme is adopted, so that the defect that a motor cannot be started due to power failure or control loop failure of the control loops in the contactor scheme is effectively overcome.
It will be apparent to those skilled in the art that various modifications and variations can be made to the present invention without departing from the spirit or scope of the invention. Thus, it is intended that the present invention also include such modifications and alterations insofar as they come within the scope of the appended claims or the equivalents thereof.
Claims (8)
1. The star-delta electric loop operation device applied to two circuit breakers is characterized by comprising a first rod body (1) and a second rod body (2), wherein the first rod body (1) and the second rod body (2) are both rotatably connected to a rotating shaft (3);
the end of the first rod body (1) is provided with a control component (11), the rotating shaft (3) passes through the control component (11), the edge of the control component (11) is provided with a first guide surface (12), one end of the first guide surface (12) is provided with a notch (13), the control component (11) is also connected with a first stop block (14), the first stop block (14) is positioned at the other end of the first guide surface (12) relative to the notch (13), and the first stop block (14) stops the second rod body (2) from a first side surface (21) of the second rod body (2);
the rotary shaft (3) is further sleeved with a swing arm (4), a sliding space (41) is formed in the swing arm (4), a sliding block (42) is arranged in the sliding space (41), the sliding block (42) is rotatably connected to the second rod body (2) and is overlapped with the second rod body (2), the sliding block (42) is connected with the rotary shaft (3) through an elastic component (43), the sliding block (42) is provided with a guide component (422) extending to the surface of the second rod body (2), a second stop block (44) is further connected to the swing arm (4), the second stop block (44) stops the second rod body (2) from a second side face (22) of the second rod body (2), and the second side face (22) and the first side face (21) are oppositely arranged;
the second rod body (2) is provided with a second guide surface (23), and the guide part (422) is in guide fit with the second guide surface (23); the notch part (13) is an arc notch matched with the shape of the end part of the sliding block (42);
the surface of the second rod body (2) is provided with a lug (24), the lug (24) is arranged along the first side face (21), a lug free end (241) of the lug (24) extends towards the free end direction of the second rod body (2), the lug free end (241) is connected with a convex rib (25) traversing the surface of the second rod body (2), and the outer side of the convex rib (25) forms the second guide surface (23).
2. A star delta electrical circuit operating device for a two-stage circuit breaker according to claim 1, characterized in that the first guide surface (12) is an arcuate guide surface.
3. A star delta electrical circuit operating device for a two-stage circuit breaker according to claim 1 or 2, characterized in that the operating member (11) is a circular plate body.
4. A star delta electric circuit operating device for two circuit breakers according to claim 1, characterized in that the slide block (42) is a kidney-shaped block, the sliding space (41) is a kidney-shaped hole, and the length of the sliding space (41) is greater than the length of the slide block (42).
5. Star-delta electrical circuit operating device for two circuit breakers according to claim 1, characterized in that the swing arm (4) is a sector plate.
6. A star delta electrical circuit operating device for a two-stage circuit breaker according to claim 1, characterized in that the second guiding surface (23) is a bevel.
7. A star delta electric circuit operating device for two circuit breakers according to claim 6, characterized in that the bottom of the slider (42) is provided with a mounting base block (421), the mounting base block (421) being rotatably mounted in the area enclosed by the lug (24) and the rib (25).
8. A star delta electrical circuit operating device for a two-stage circuit breaker according to claim 1, characterized in that the guiding member (422) is a cylinder.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322496.9A CN109360754B (en) | 2018-11-06 | 2018-11-06 | Star-delta electric loop operation device applied to two circuit breakers |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811322496.9A CN109360754B (en) | 2018-11-06 | 2018-11-06 | Star-delta electric loop operation device applied to two circuit breakers |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109360754A CN109360754A (en) | 2019-02-19 |
| CN109360754B true CN109360754B (en) | 2024-01-19 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201811322496.9A Active CN109360754B (en) | 2018-11-06 | 2018-11-06 | Star-delta electric loop operation device applied to two circuit breakers |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1213739A2 (en) * | 2000-12-08 | 2002-06-12 | Mitsubishi Denki Kabushiki Kaisha | Electrically operating apparatus for circuit breaker |
| CN101958206A (en) * | 2009-12-09 | 2011-01-26 | 上海诺雅克电气有限公司 | Miniature circuit breaker operation mechanism capable of realizing multi-control input and output |
| CN204596733U (en) * | 2015-04-27 | 2015-08-26 | 苏州未来电器股份有限公司 | Circuit breaker tripping structure |
| CN105978406A (en) * | 2016-05-27 | 2016-09-28 | 天津加美特电气设备有限公司 | Star-angle conversion starter for three-phase alternating-current motor |
| CN209104014U (en) * | 2018-11-06 | 2019-07-12 | 安士缔(中国)电气设备有限公司 | A kind of star triangle electric loop operating device applied to two breakers |
-
2018
- 2018-11-06 CN CN201811322496.9A patent/CN109360754B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP1213739A2 (en) * | 2000-12-08 | 2002-06-12 | Mitsubishi Denki Kabushiki Kaisha | Electrically operating apparatus for circuit breaker |
| CN101958206A (en) * | 2009-12-09 | 2011-01-26 | 上海诺雅克电气有限公司 | Miniature circuit breaker operation mechanism capable of realizing multi-control input and output |
| CN204596733U (en) * | 2015-04-27 | 2015-08-26 | 苏州未来电器股份有限公司 | Circuit breaker tripping structure |
| CN105978406A (en) * | 2016-05-27 | 2016-09-28 | 天津加美特电气设备有限公司 | Star-angle conversion starter for three-phase alternating-current motor |
| CN209104014U (en) * | 2018-11-06 | 2019-07-12 | 安士缔(中国)电气设备有限公司 | A kind of star triangle electric loop operating device applied to two breakers |
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| Publication number | Publication date |
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| CN109360754A (en) | 2019-02-19 |
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