CN212725200U - Opening and closing retaining device of high-voltage circuit breaker - Google Patents
Opening and closing retaining device of high-voltage circuit breaker Download PDFInfo
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- CN212725200U CN212725200U CN202021708759.2U CN202021708759U CN212725200U CN 212725200 U CN212725200 U CN 212725200U CN 202021708759 U CN202021708759 U CN 202021708759U CN 212725200 U CN212725200 U CN 212725200U
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Abstract
The utility model discloses a divide-shut brake holding device of high voltage circuit breaker, belong to mechanical equipment technical field, the device is as two independent unit modules with separating brake holding unit and combined floodgate holding unit, in the combined floodgate holding unit, combined floodgate tripping plate one end is connected on the combined floodgate semi-axis, the other end is connected at the cam structurally, thereby can be through controlling the disconnection or the closure of combined floodgate unit of combined floodgate semi-axis and cam structure and then control, among the separating brake holding unit, through being connected separating brake tripping plate and connecting rod structure, thereby can be through controlling the disconnection or the closure of separating brake tripping plate of separating brake semi-axis and connecting rod structure and then control. The device adopts a two-stage locking form to complete the brake opening and closing maintenance, can effectively reduce the brake closing and releasing force and the brake opening and releasing force, improves the reliability of the closing and the opening of the circuit breaker, and prolongs the service life of the device.
Description
Technical Field
The utility model belongs to the technical field of mechanical equipment, a divide-shut brake retaining device of high voltage circuit breaker is related to.
Background
For a traditional high-voltage circuit breaker, a closing maintaining device, an opening maintaining device, a closing tripping device and an opening tripping device are designed as a part of the whole operating mechanism, the dispersion of the functional characteristics is large, and inconvenience is brought to the adjustment of characteristic parameters and the replacement of parts.
On the other hand, the reliability of the traditional high-voltage circuit breaker opening and closing holding mechanism needs to be further researched, and recently, the probability that the opening and closing refusing phenomena account for the circuit breaker fault is the highest as seen from feedback information of users and assembly and debugging of workshops. Although a great deal of technical improvement and perfection has been done before, the results are still not ideal, and thus the problem has not been solved fundamentally. It can be imagined that once the circuit breaker in live operation has the phenomenon of closing refuses, the circuit breaker which has been tripped has the phenomenon of opening refuses, and the fault will continue to be enlarged until the superior switching device trips to release the fault. The accident range is expanded, and the safe operation of the power grid is influenced. Similarly, if the closing of the breaker is not reliable, when the short-circuit current is closed, the breaker is closed firstly, and then the breaker is opened, so that the breaker is seriously burnt.
SUMMERY OF THE UTILITY MODEL
In order to overcome the defects in the prior art, the utility model aims to provide a high-voltage circuit breaker's divide-shut brake retaining device to solve the technical problem that the existing high-voltage circuit breaker divide-shut brake mechanism easily takes place to refuse to divide, refuse to close the trouble.
In order to achieve the above purpose, the utility model adopts the following technical scheme to realize:
the utility model discloses a divide-shut brake holding device of high voltage circuit breaker, including cam structure, combined floodgate holding unit and separating brake holding unit, combined floodgate holding unit includes combined floodgate semi-axis and combined floodgate tripping plate, and the combined floodgate semi-axis is fixed on external circuit breaker link plate, the one end of combined floodgate tripping plate is connected on combined floodgate semi-axis, and the other end is connected on cam structure;
the opening retaining unit comprises a connecting rod structure, an opening half shaft and an opening tripping plate connected to the opening half shaft, the opening half shaft is fixed on an externally connected circuit breaker hanging plate, and the connecting rod structure is connected with the opening tripping plate;
the connecting rod structure is connected with a connecting plate structure, and the connecting plate structure is connected with the cam structure through a roller in the opening state of the circuit breaker.
Preferably, the cam structure comprises a cam and a cam shaft, and the cam is fixed on the circuit breaker hanging plate through the cam shaft; the cam shaft is connected with an external motor through a gear structure; the two ends of the cam shaft are respectively connected with a closing spring through a hanging spring crank arm, and the closing spring is fixed on the circuit breaker hanging plate.
Further preferably, a positioning part is arranged on the cam, and the closing tripping plate is buckled on the positioning part before the breaker is closed.
Preferably, the connecting rod structure includes connecting rod I and connecting rod II, connecting rod I's one end and separating brake trip board swing joint, connecting rod I's the other end and connecting rod II's one end swing joint, connecting rod II's the other end is fixed on external circuit breaker link plate.
Further preferably, a raised limiting structure is arranged on the brake separating and releasing plate, and a corner is arranged on the connecting rod I; before the breaker is opened, the corner of the connecting rod I is buckled on the limit structure of the opening tripping plate.
Further preferably, the opening retaining unit further comprises a tension spring, one end of the tension spring is connected to the opening tripping plate, and the other end of the tension spring is fixed on the connecting rod II; the tension spring is fixed at 1/2 on the side wall of the connecting rod II.
Further preferably, the closing tripping plate is connected with a closing half shaft pin, and the connecting rod I is connected with an opening tripping plate pin; the connecting rod I is connected with the connecting rod II through a shaft pin.
Preferably, even the board structure includes board II and even board I, and the one end swing joint of even board II is connected in connecting rod I and connecting rod II's junction, and the other end is connected with the one end of even board I, and the other end of even board I is connected with crank arm I, the one end and the external main shaft fixed connection of crank arm I.
Further preferably, the roller is sleeved at the joint of the connecting plate I and the connecting plate II.
Preferably, the closing tripping plate is L-shaped, and the opening tripping plate is fan-shaped.
Compared with the prior art, the utility model discloses following beneficial effect has:
the utility model discloses a divide-shut brake holding device of high voltage circuit breaker, the device is as two independent unit modules with separating brake holding unit and combined floodgate holding unit, in the combined floodgate holding unit, combined floodgate tripping plate one end is connected on the combined floodgate semi-axis, the other end is connected at the cam structurally, thereby can be through controlling the disconnection or the closure of combined floodgate unit of combined floodgate semi-axis and cam structure and then control, among the separating brake holding unit, through being connected separating brake tripping plate and connecting rod structure, thereby can be through controlling the disconnection or the closure of separating brake tripping plate of separating brake semi-axis and connecting rod structure and then control. The opening keeping unit and the closing keeping unit are independent and do not influence each other. The utility model discloses the device is through controlling two mutually independent hasp units of separating brake keeper and combined floodgate keeper in order to accomplish separating brake or combined floodgate process to the motion of restriction connecting rod structure and the rotation of cam, this structure can reduce combined floodgate tripping force and separating brake tripping force effectively, effectively avoids refusing of high voltage circuit breaker divide-shut brake mechanism to divide, refuse to close the problem, is showing the combined floodgate reliability and the separating brake reliability that improve the circuit breaker, and extension fixture's life.
Further, when the circuit breaker is changed from a state that the circuit breaker is not subjected to energy storage during opening to a state that the circuit breaker is subjected to energy storage during opening, the motor drives the cam shaft to rotate clockwise through the gear structure, the spring hanging crank arm is connected with the cam shaft, and the cam shaft rotates to drive the spring hanging crank arm 21 to rotate clockwise so as to elongate the closing spring. Meanwhile, the closing tripping plate is connected to the closing half shaft, so that the closing tripping plate cannot rotate, the cam rotates clockwise, the cam cannot continue to rotate until the positioning piece is buckled on the closing tripping plate, and energy storage is finished at the moment, so that the aims of maintaining the energy storage state of the closing spring and the opening state of the operating mechanism are fulfilled.
Furthermore, the closing tripping plate is of an L shape, one end of the closing tripping plate is connected with the closing half shaft, the other end of the closing tripping plate is connected with the cam, the closing tripping plate is connected with the closing half shaft, and the clockwise rotation of the closing tripping plate is limited. On the other hand, the lower side of the closing tripping plate is buckled on a limiting structure protruding on the surface of the cam, so that the cam is limited, the cam and the cam shaft cannot rotate clockwise continuously, and the purpose of maintaining the opening state is achieved.
Furthermore, the left side of the opening tripping plate is buckled on the opening half shaft, and the counterclockwise rotation of the opening tripping plate is limited. The convex limiting structure on the surface of the opening tripping plate is buckled with the corner of the connecting rod I, so that the free movement of the connecting rod I is limited. And because one end of the connecting rod I determines the movement of the connecting rod II, the movement of the connecting rod II is limited due to the limitation of the movement of the connecting rod I, and the aim of maintaining the closing state is fulfilled.
Furthermore, the opening retaining unit also comprises a tension spring, one end of the tension spring is connected to the opening tripping plate, the other end of the tension spring is fixed on the connecting rod II, and the tension spring has a resetting effect, so that the opening tripping plate can return to the initial position when the opening unit is converted between the closing state and the opening state.
Drawings
Fig. 1-1 is a side view of the device assembly of the high voltage circuit breaker of the present invention;
fig. 1-2 are front views of the device assembly of the high voltage circuit breaker of the present invention;
fig. 2-1 is a front view of a link transmission mechanism of the high voltage circuit breaker of the present invention;
fig. 2-2 is a rear view of the link transmission mechanism of the high voltage circuit breaker of the present invention;
fig. 3 is an assembly schematic diagram of the opening and closing holding device of the high-voltage circuit breaker of the present invention;
fig. 4 is a schematic diagram of the opening and holding state of the closing holding device of the high-voltage circuit breaker of the present invention;
fig. 5 is a schematic diagram of the state of the switching process of the switching-on maintaining device of the high-voltage circuit breaker;
fig. 6 is a schematic view of the switching-on holding state of the switching-off holding device of the high-voltage circuit breaker of the present invention;
fig. 7 is a schematic diagram of the opening process state of the opening holding device of the high-voltage circuit breaker of the present invention;
fig. 8 is a schematic diagram of the direction of movement of the connecting rod of the high-voltage circuit breaker of the present invention from the state of switching off the switch and the state of switching on the switch without storing energy;
fig. 9 is the schematic diagram of the direction of movement of the connecting rod of the high-voltage circuit breaker from the state of switching on and switching off without energy storage.
Wherein: 1-an insulating shield; 2-a plum blossom plug; 3-upper contact arm; 4-upper gasket; 5-M6 bolt; 6-M12 bolt; 7-a vacuum arc-extinguishing chamber; 8-a conductive clip; 9-flexible connection; 10-lower contact arm; 11-a bolt; 12-an insulator; 13-an insulating pull rod; 14-outer crank arm; 15-chassis vehicle; 16-an insulating cover; 17-a main shaft limit bolt; 18-a spring operating mechanism; 19-a frame; 20-a cam; 21-hanging spring crank arm; 22-a switching-on half shaft; 23-closing tripping plate; 24-a camshaft; 25-crank arm I; 26-a pressure spring; 27-connecting plate I; 28-limiting plate; 29-Link plate II; 30-a brake-separating spring; 31-a driven gear; 32-connecting rod I; 33-main gear; 34-connecting rod II; 35-a closing spring; 36-a tension spring; 37-brake separating and releasing plate; 38-opening half shaft; 39-crank arm II; 40-crank arm III; 41-hanging plates; 42-a main shaft; 43-crank arm IV; 44-oil buffer; 45-positioning piece.
Detailed Description
In order to make the technical solution of the present invention better understood, the technical solution of the embodiments of the present invention will be clearly and completely described below 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 efforts shall belong to the protection scope of the present invention.
It should be noted that the terms "first," "second," and the like in the description and claims of the present invention and in the drawings described above are used for distinguishing between similar elements and not necessarily for describing a particular sequential or chronological order. It is to be understood that the data so used is interchangeable under appropriate circumstances such that the embodiments of the invention described herein are capable of operation in sequences other than those illustrated or otherwise described herein. Furthermore, the terms "comprises," "comprising," and "having," and any variations thereof, are intended to cover a non-exclusive inclusion, such that a process, method, system, article, or apparatus that comprises a list of steps or elements is not necessarily limited to those steps or elements expressly listed, but may include other steps or elements not expressly listed or inherent to such process, method, article, or apparatus.
The device of the present invention is specifically described below by way of specific embodiments:
referring to fig. 3, the opening/closing holding device for a high-voltage circuit breaker provided in this embodiment includes: the device comprises a closing half shaft 22, a closing tripping plate 23, a connecting rod I32, a connecting rod II34, a tension spring 36, a separating tripping plate 37 and a separating half shaft 38;
In this embodiment, referring to fig. 4, when the circuit breaker is in the open-circuit stored energy state, the closing trip plate 23 is buckled on the closing half shaft 22, and the clockwise rotation of the closing trip plate 23 is limited. On the other hand, the lower side of the closing tripping plate 23 is fastened to the positioning member 45 of the cam 20, so that the cam 20 is limited, the cam 20 and the cam shaft 24 cannot rotate clockwise continuously, and the purposes of maintaining the energy storage state of the closing spring and the opening state of the operating mechanism are achieved.
In this embodiment, referring to fig. 5, when the circuit breaker receives a closing signal, the closing half shaft 22 rotates clockwise by an angle to release the restriction on the closing trip plate 23, so that the closing trip plate 23, which has released the restriction, rotates clockwise, and the lower end thereof is separated from the positioning member 45 of the cam 20, thereby releasing the restriction on the cam 20 and the cam shaft 24. The closing spring enables the cam shaft 24 to drive the cam 20 to rotate clockwise, so that the operating mechanism completes the closing process of the circuit breaker.
In this embodiment, referring to fig. 6, the opening holding state of the high-voltage circuit breaker opening holding device is that the opening trip plate 37 is left-hand fastened to the opening half shaft 38, and its counterclockwise rotation is restricted. The convex limit structure on the surface of the opening tripping plate 37 is buckled with the corner of the connecting rod I32, so that the free movement of the connecting rod I32 is limited. And because one end of the connecting rod I32 determines the movement of the connecting rod II34, the movement limitation of the connecting rod I32 also limits the movement of the connecting rod II34, thereby achieving the purpose of keeping the closing of the operating mechanism.
In this embodiment, referring to fig. 7, when the circuit breaker receives the opening signal, the opening half shaft 38 rotates counterclockwise by an angle to release the restriction on the left side of the opening trip plate 37, and the opening trip plate 37 rotates counterclockwise immediately under the influence of the opening force. The convex limit structure on the surface of the opening tripping plate 37 can be separated from the corner of the connecting rod I32, so that the connecting rod I32 can move downwards and leftwards, and because one end of the connecting rod I32 is connected with one end of the connecting rod II34 through a shaft pin, the connecting rod II34 can also move downwards, and the operating mechanism can complete the opening process of the circuit breaker.
Example 2
The cam shaft 24 is connected with an external motor through a gear structure; two ends of the cam shaft 24 are respectively connected with a closing spring 35 through a hanging spring crank arm 21, and the closing spring 35 is fixed on a circuit breaker hanging plate 41; the connecting part of the connecting rod I32 and the connecting rod II34 is movably connected with a connecting plate II29, the connecting plate II29 is connected with a crank arm I25 through a connecting plate I27, and one end of the crank arm I25 is fixedly connected with an external spindle 42. The rest is the same as in example 1.
The utility model discloses the device is in the use:
referring to fig. 1-1, 1-2, 2-1 and 2-2, when the high voltage circuit breaker is in the position state of opening and stored energy, the positioning member 45 fixed to the cam 20 is fastened to the closing half shaft 22, and the cam and the link transmission mechanism complete the preparation of closing. When the circuit breaker receives a closing signal, the closing half shaft 22 rotates by an angle to remove the limitation on the closing tripping plate 23, the closing tripping plate 23 without the limitation rotates to be separated from the positioning piece 45 on the cam structure, so that the limitation on the cam structure is removed, the cam 20 is driven by the closing spring 35 to rotate clockwise, the roller at the joint of the connecting plate I27 and the connecting plate II29 is pushed to move downwards leftwards, meanwhile, the opening tripping plate 37 is pushed to rotate anticlockwise through the connecting rod I32, the opening tripping plate 37 is buckled with the opening half shaft 38, the opening tripping plate 37 cannot rotate anticlockwise due to the limiting effect of the opening half shaft 38, and the connecting rod I32 is fixed in the closing process all the time. Because the connecting rod I32 is connected to one side of the connecting rod II34, and the other side of the connecting rod II34 is fixed by a shaft pin all the time, the connecting rod II34 is also fixed all the time in the closing process, at the moment, a five-connecting-rod transmission mechanism is equivalent to a four-connecting-rod transmission mechanism, the transmission direction of force is clear, the main shaft is driven to rotate clockwise by the connecting lever I25, and meanwhile, four brake-separating 30 springs hung on the other four connecting levers III 40 start to store energy. The main shaft drives a connecting lever II 39 connected with a compression spring 26 to rotate clockwise, and pushes the compression spring 26 to move leftwards, so that an outer connecting lever 14 pushes an insulating pull rod 13 to move rightwards to drive a moving contact in a vacuum arc extinguish chamber 7 to complete closing. When the cam 20 rotates to the equal circular surface, the closing operation is completed, and the state is changed into the closing non-energy storage state. The moving direction of the connecting rod transmission mechanism converted from the switching-off stored energy state to the switching-on non-stored energy state is shown by reference to figures 8-1 and 8-2. The breaker rotates the cam 20 to complete the closing process of the breaker; meanwhile, the opening tripping plate 37 is connected to the opening half shaft 38, the counterclockwise rotation of the opening tripping plate is limited, and the opening tripping plate 37 is connected with the connecting rod structure to further limit the movement of the connecting rod structure, so that the operating mechanism is kept in a closing state.
When a brake-separating signal is received, the brake-separating half shaft 38 rotates anticlockwise under the action of a tripping force, the restraint of the brake-separating half shaft 38 on the brake-separating tripping plate 37 is released, the brake-separating tripping plate 37 rotates anticlockwise under the action of the force, the connecting rod I32 is not fixed, and therefore one end of the connecting rod II34 is not fixedly limited, and the connecting rod II34 is converted into a five-connecting-rod transmission mechanism in the brake-separating process. Because there is not definite motion relation between the connecting lever I25 serving as the driving arm and the connecting plate I27 serving as the driven arm and the connecting plate II29 of the five-connecting-rod transmission mechanism, the force transmitted by the five-connecting-rod transmission mechanism is instantly discharged, the energy is discharged by the opening spring 30, and the main shaft is driven by the four connecting levers 40 to rotate anticlockwise to complete the rapid opening action of the circuit breaker. The moving direction of the connecting rod transmission mechanism converted from the closing non-energy-storage state to the opening non-energy-storage state is shown by reference to fig. 8-3 and 8-4. When the breaker receives a brake-off signal, the brake-off half shaft can rotate by an angle to remove the limitation on the brake-off tripping plate 37, and the brake-off tripping plate 37 rotates to rapidly drive the connecting rod structure to move, so that the brake-off process of the breaker is completed; when the circuit breaker is changed from a non-energy-storage state of switching-off to an energy-storage state of switching-off, the motor drives the driven gear 31 to rotate through the main gear 33, the driven gear 31 drives the cam shaft 24 to rotate in the clockwise direction, the spring-hanging crank arm 21 is connected with the cam shaft 24, the cam shaft 24 rotates to drive the spring-hanging crank arm 21 to rotate in the clockwise direction, and the switching-on spring 35 is lengthened. Meanwhile, the closing tripping plate 23 is connected to the closing half shaft 22, so that the closing tripping plate 23 cannot rotate, the cam 20 rotates clockwise until the positioning piece 45 is fastened to the closing tripping plate 23, and the cam structure connected to the closing tripping plate 23 cannot rotate due to the end of energy storage, and the purposes of maintaining the energy storage state of the closing spring 35 and the opening state of the operating mechanism are achieved.
To sum up, the utility model discloses in the device, when high voltage circuit breaker for the position state that the separating brake has stored energy, at this moment cam structure and link structure accomplished the preparation work of combined floodgate. When the circuit breaker receives a closing signal, the closing half shaft can rotate by an angle to remove the restriction on the closing tripping plate, the closing tripping plate for removing the restriction can rotate, the restriction on the cam structure is removed, the cam structure rotates to push the connecting plate structure to move, the opening tripping plate is pushed to rotate through the connecting rod structure, the opening tripping plate is buckled with the opening half shaft, the opening tripping plate cannot continue to rotate due to the restriction of the opening half shaft, and therefore the connecting rod structure is fixed in the closing process all the time. Because the connecting rod structure has a definite force transmission direction, the switch-on is completed after energy storage. When the cam structure is an equal circular surface, the closing operation is completed, and the state is changed into a closing non-energy-storage state. Meanwhile, the opening tripping plate is connected to the opening half shaft to limit the counterclockwise rotation of the opening tripping plate, and the opening tripping plate is connected with the connecting rod structure to further limit the movement of the connecting rod structure, so that the operating mechanism is kept in a closing state. When a brake-separating signal is received, the brake-separating half shaft rotates anticlockwise under the action of a tripping force, the restraint of the brake-separating half shaft on the brake-separating tripping plate is relieved, the brake-separating tripping plate rotates anticlockwise under the action of the force, the connecting rod structure is not fixed any more, and the brake separation is completed after the energy is released. The utility model discloses the device is through controlling two mutually independent hasp units of separating brake keeper and combined floodgate keeper in order to accomplish separating brake or combined floodgate process to the motion of restriction connecting rod structure and the rotation of cam, this structure can reduce combined floodgate tripping force and separating brake tripping force effectively, effectively avoids refusing of high voltage circuit breaker divide-shut brake mechanism to divide, refuse to close the problem, is showing the combined floodgate reliability and the separating brake reliability that improve the circuit breaker, and extension fixture's life. The switching-on maintaining unit and the switching-off maintaining unit are mutually independent, the switching-off or switching-on state can be controlled by limiting the motion of the connecting rod structure and the rotation of the cam, the acting force of the switching-off tripping plate and the switching-on tripping plate is saved, the switching-on and switching-off precision can be improved, and the service life of the device can be prolonged.
The above contents are only for explaining the technical idea of the present invention, and the protection scope of the present invention cannot be limited thereby, and any modification made on the basis of the technical solution according to the technical idea of the present invention all fall within the protection scope of the claims of the present invention.
Claims (10)
1. The switching-on and switching-off holding device of the high-voltage circuit breaker is characterized by comprising a cam structure, a switching-on holding unit and a switching-off holding unit, wherein the switching-on holding unit comprises a switching-on half shaft (22) and a switching-on tripping plate (23), the switching-on half shaft (22) is fixed on an external circuit breaker hanging plate (41), one end of the switching-on tripping plate (23) is connected to the switching-on half shaft (22), and the other end of the switching-on tripping plate is connected to the cam structure;
the brake separating retaining unit comprises a connecting rod structure, a brake separating half shaft (38) and a brake separating tripping plate (37) connected to the brake separating half shaft (38), the brake separating half shaft (38) is fixed on an externally connected circuit breaker hanging plate (41), and the connecting rod structure is connected with the brake separating tripping plate (37);
the connecting rod structure is connected with a connecting plate structure, and the connecting plate structure is connected with the cam structure through a roller in the opening state of the circuit breaker.
2. The switching-on and switching-off holding device of the high-voltage circuit breaker is characterized in that the cam structure comprises a cam (20) and a cam shaft (24), wherein the cam (20) is fixed on a circuit breaker hanging plate (41) through the cam shaft (24); the camshaft (24) is connected with an external motor through a gear structure; two ends of the cam shaft (24) are respectively connected with a closing spring (35) through a spring-hanging crank arm (21), and the closing spring (35) is fixed on a circuit breaker hanging plate (41).
3. The switch-on/switch-off holding device of the high-voltage circuit breaker according to claim 2, wherein the cam (20) is provided with a positioning member (45), and the switch-on trip plate (23) is buckled on the positioning member (45) before the circuit breaker is switched on.
4. The opening and closing holding device of the high-voltage circuit breaker according to claim 1, wherein the connecting rod structure comprises a connecting rod I (32) and a connecting rod II (34), one end of the connecting rod I (32) is movably connected with the opening tripping plate (37), the other end of the connecting rod I (32) is movably connected with one end of the connecting rod II (34), and the other end of the connecting rod II (34) is fixed on the external circuit breaker hanging plate (41).
5. The opening and closing holding device of the high-voltage circuit breaker according to claim 4, characterized in that a raised limiting structure is arranged on the opening and closing trip plate (37), and a corner is arranged on the connecting rod I (32); before the breaker is opened, the corner of the connecting rod I (32) is buckled on the limit structure of the opening tripping plate (37).
6. The opening and closing holding device of the high-voltage circuit breaker according to claim 4, wherein the opening holding unit further comprises a tension spring (36), one end of the tension spring (36) is connected to the opening tripping plate (37), and the other end of the tension spring is fixed on the connecting rod II (34); the tension spring (36) is fixed at 1/2 of the side wall of the connecting rod II (34).
7. The switching-on and switching-off holding device of the high-voltage circuit breaker is characterized in that the switching-on tripping plate (23) is in shaft pin connection with a switching-on half shaft (22), and the connecting rod I (32) is in shaft pin connection with the switching-off tripping plate (37); the connecting rod I (32) is connected with the connecting rod II (34) through a shaft pin.
8. The switch-on/off holding device of the high-voltage circuit breaker according to claim 1, wherein the connecting plate structure comprises a connecting plate II (29) and a connecting plate I (27), one end of the connecting plate II (29) is movably connected to the joint of the connecting rod I (32) and the connecting rod II (34), the other end of the connecting plate II is connected with one end of the connecting plate I (27), the other end of the connecting plate I (27) is connected with a crank arm I (25), and one end of the crank arm I (25) is fixedly connected with an external spindle (42).
9. The opening/closing holding device of a high voltage circuit breaker according to claim 8, wherein the roller is sleeved at the connection of the link plate I (27) and the link plate II (29).
10. The switching-on/off holding device of a high voltage circuit breaker according to claim 1, wherein the switching-on trip plate (23) is L-shaped, and the switching-off trip plate (37) is fan-shaped.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021708759.2U CN212725200U (en) | 2020-08-14 | 2020-08-14 | Opening and closing retaining device of high-voltage circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202021708759.2U CN212725200U (en) | 2020-08-14 | 2020-08-14 | Opening and closing retaining device of high-voltage circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN212725200U true CN212725200U (en) | 2021-03-16 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202021708759.2U Active CN212725200U (en) | 2020-08-14 | 2020-08-14 | Opening and closing retaining device of high-voltage circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN212725200U (en) |
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2020
- 2020-08-14 CN CN202021708759.2U patent/CN212725200U/en active Active
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