CN217641116U - Three-phase column type vacuum circuit breaker - Google Patents
Three-phase column type vacuum circuit breaker Download PDFInfo
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- CN217641116U CN217641116U CN202221162442.2U CN202221162442U CN217641116U CN 217641116 U CN217641116 U CN 217641116U CN 202221162442 U CN202221162442 U CN 202221162442U CN 217641116 U CN217641116 U CN 217641116U
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- circuit breaker
- vacuum circuit
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Abstract
The utility model discloses a three-phase column vacuum circuit breaker, the power distribution box comprises a mechanism box body, three solid utmost point post and three operating device that seals, each operating device includes permanent magnet device and separating brake spring, the direction of arranging is provided with a drive main shaft along three operating device in the mechanism box, this drive main shaft passes through linkage structure and is connected with the synchronous linkage of three insulating pull rod, a tip of drive main shaft is fixed with the transmission turning arm, the separating brake handle is equipped with to mechanism box outside, inside the driving piece that is equipped with of mechanism box, the transmission turning arm is in on the rotatory route of driving piece, support through the driving piece when separating brake handle separating brake rotates and lean on the transmission turning arm and rotate in order to drive the drive main shaft. The utility model discloses a vacuum circuit breaker structure sets up a drive main shaft and disposes suitable separating brake handle in mechanism box through optimal design, through the synchronous linkage between drive main shaft and the three operating device, and manual separating brake convenient operation is reliable, has fine practicality and can the popularization nature.
Description
Technical Field
The utility model relates to a three-phase column vacuum circuit breaker belongs to vacuum circuit breaker structural design technical field.
Background
An outdoor vacuum circuit breaker is a circuit breaker installed outdoors, and is usually installed on a tower. A vacuum circuit breaker is widely used in a high-voltage power transmission and distribution system as a switching device for controlling the breaking of a high-voltage line. The conventional permanent magnet operating mechanism of the three-phase column vacuum circuit breaker is generally provided with only one permanent magnet device (such as the structure disclosed in patent document CN 202905591U), the permanent magnet device is used for controlling three-phase synchronous closing of the vacuum circuit breaker, the opening of the vacuum circuit breaker is driven and controlled by elastic force released by an opening spring, and the vacuum circuit breaker is further provided with a manual opening mechanism in order to realize manual opening in an emergency state. However, the manual opening mechanism applied to the three-phase vacuum circuit breaker at present is difficult to be directly matched and used in the permanent magnet operating mechanism comprising three permanent magnet devices, so that it is necessary to design a suitable manual opening structure.
SUMMERY OF THE UTILITY MODEL
To the problem pointed out in the background art, the utility model provides a rational three-phase column vacuum circuit breaker of configuration optimization.
Realize the utility model discloses the technical scheme of purpose is:
a three-phase column type vacuum circuit breaker comprises a mechanism box body, three solid-sealed polar columns fixed on the mechanism box body and operating mechanisms installed in the mechanism box body, wherein the three operating mechanisms are arranged and are respectively and correspondingly connected with moving contacts on vacuum arc-extinguishing chambers in the solid-sealed polar columns through an insulating pull rod, each operating mechanism comprises a permanent magnet device and a brake separating spring, the permanent magnet device drives the insulating pull rod to control the vacuum arc-extinguishing chambers to be switched on when being powered on, the brake separating springs drive the insulating pull rod to control the vacuum arc-extinguishing chambers to be switched off when the permanent magnet device is powered off, a driving main shaft is arranged in the mechanism box body along the arrangement direction of the three operating mechanisms and is synchronously linked with the three insulating pull rods through a linkage structure, a transmission connecting lever is fixed at one end of the driving main shaft, a brake separating handle is installed outside the mechanism box body, a driving piece linked with the brake separating handle is arranged inside the mechanism box body, the transmission connecting lever is located on the rotating path of the driving piece, and the brake separating handle abuts against the transmission connecting lever through the driving piece to drive the transmission connecting lever to drive the driving main shaft to rotate when the brake separating handle.
In the scheme, the brake-separating device further comprises a return spring, the brake-separating handle is located at an initial position under the action of the return spring, and the driving piece does not block the transmission crank arm from rotating in the state.
In the scheme, the mechanism box body is rotatably provided with a rotating shaft, and the driving piece and the brake separating handle are respectively fixed at the inner end and the outer end of the rotating shaft; the driving piece comprises a fixed connecting block fixedly connected with the rotating shaft and a driving shaft fixed on the fixed connecting block, a limiting column is fixed on the inner wall of the mechanism box body, and the fixed connecting block is abutted against the limiting column when the opening handle is located at an initial position.
In the above scheme, the reset spring is a tension spring and is connected between the fixed connecting block and the tension spring hook, and the tension spring hook is fixed on the mechanism box body.
In the above scheme, the bottom end of each insulating pull rod is connected with a connecting block and the connecting block is fixed on the movable iron core of the permanent magnet device, a connecting crank arm is fixed on the driving main shaft at a position corresponding to each connecting block, a connecting slot is arranged on the connecting block, a connecting arm is arranged on the connecting crank arm, and the connecting slot and the connecting arm are in inserting fit to form the linkage structure.
In the scheme, a plurality of connecting slots are formed in each connecting block at intervals, rib plates are formed between every two adjacent connecting slots, the number of the connecting arms is equal to that of the connecting slots, and the connecting arms are correspondingly spliced with the connecting slots one by one.
The utility model discloses positive effect has: the utility model discloses an among the three-phase column vacuum circuit breaker, through set up a drive main shaft and dispose suitable separating brake handle in the mechanism box, through being connected between drive main shaft and the three operating device and realize that the three-phase action is synchronous, through rotatory separating brake handle and drive the drive main shaft rotation and drive the insulating pull rod action among the three operating device and carry out the separating brake when the separating brake, the utility model provides a structural design is reasonable, and adaptation that can be better is installed and is used in three-phase column vacuum circuit breaker, has fine practicality and generalizability.
Drawings
Fig. 1 is a schematic perspective view of a vacuum circuit breaker according to the present invention;
fig. 2 is a schematic structural view of the vacuum circuit breaker of the present invention without a mechanism box and a solid-sealed terminal post;
fig. 3 is a schematic view of a partial structure of a three-phase column vacuum circuit breaker according to the present invention;
FIG. 4 is a schematic view of the three-dimensional structure of the middle opening handle, the driving member and the rotating shaft of the present invention when they are connected in a matching manner;
fig. 5 is a schematic perspective view of the transmission crank arm of the present invention;
fig. 6 is a schematic view of a three-dimensional structure of the middle connecting block of the present invention.
The reference symbols shown in the figures are: 1-a mechanism box body; 11-a limiting column; 12-tension spring hook; 2-solid sealing the pole; 3-an operating mechanism; 31-permanent magnetic means; 32-a switching-off spring; 4-an insulating pull rod; 41-connecting block; 411-a connection slot; 5-driving the main shaft; 51-a transmission crank arm; 52-connecting crank arm; 521-a connecting arm; 6-opening a brake handle; 7-a drive member; 71-fixing the connecting block; 72-a drive shaft; 8-a return spring; 9-axis of rotation.
Detailed Description
The specific structure of the present invention is described below with reference to the accompanying drawings:
a three-phase column type vacuum circuit breaker is shown in figures 1 to 6 and comprises a mechanism box body 1, three solid-sealed polar columns 2 fixed on the mechanism box body 1 and operating mechanisms 3 installed in the mechanism box body 1, wherein the three operating mechanisms 3 are arranged, the three operating mechanisms 3 are respectively and correspondingly connected with moving contacts on vacuum arc-extinguishing chambers in the solid-sealed polar columns 2 through insulating pull rods 4, each operating mechanism 3 comprises a permanent magnet device 31 and a breaking spring 32, the permanent magnet device 31 drives the moving iron core to move when being electrified and further drives the insulating pull rods 4 to control the vacuum arc-extinguishing chambers to be switched on, the breaking spring 32 drives the insulating pull rods 4 to control the vacuum arc-extinguishing chambers to be switched off when the permanent magnet device 31 is electrified, a driving main shaft 5 is arranged in the mechanism box body 1 along the arrangement direction of the three operating mechanisms 3, the driving main shaft 5 is synchronously linked with the three insulating pull rods 4 through a linkage structure, a driving crank arm 51 is fixed at one end part of the driving main shaft 5, a breaking handle 6 is installed outside the mechanism box body 1, a driving piece 7 linked with the breaking handle 6 is arranged in the mechanism box body 1, the driving piece 51 is located on a rotation path of the breaking handle 7, and the driving piece drives the driving piece to rotate through the driving piece 5; in the scheme of the embodiment, a driving main shaft 5 is arranged in a mechanism box body 1, the driving main shaft 5 is in linkage connection with insulating pull rods 4 in three operating mechanisms 3 through a linkage structure, and a tripping handle structure with a corresponding structure is configured, when manual tripping is needed, a tripping handle 6 is manually driven to rotate towards the tripping direction, a driving piece 7 linked with the tripping handle 6 is abutted to a transmission crank arm 51 to drive the driving main shaft 5 to rotate, and a downward driving force is generated on the insulating pull rod 4 in the rotating process of the driving main shaft 5 to drive a moving contact in a vacuum arc extinguishing chamber to move downwards to be separated from a static contact, so that the three vacuum arc extinguishing chambers are driven to be tripped synchronously; in addition when in actual use, because the associated action of drive main shaft 5 under the condition that an operating device 3 breaks down, still can drive this three-phase vacuum circuit breaker work when two other operating devices 3 normally act, therefore manual separating brake structural design more can adapt to the use of three-phase vacuum circuit breaker in this embodiment, has fine practicality.
In order to enable the brake separating handle 6 to automatically rotate and return when the manual brake separating operation is completed, the reset spring 8 is further arranged in the embodiment, the brake separating handle 6 is located at an initial position under the action of the reset spring 8, the driving piece 7 does not block the rotation of the transmission connecting lever 51 under the state, namely the driving piece 7 does not interfere with the normal action of an operating mechanism in the three-phase vacuum circuit breaker when the brake separating handle 6 is located at the initial position, when the brake separating is performed manually, the brake separating handle 6 rotates and enables the reset spring 8 to store energy in the process, the brake separating handle 6 is released after the manual brake separating is completed, and the brake separating handle 6 is driven to rotate and return to the initial position when the reset spring 8 releases the stored energy. The switching handle 6 can be manually reset without the provision of the return spring 8.
As a further preferable solution of this embodiment, as shown in fig. 3, a rotating shaft 9 is rotatably installed on the mechanism case 1, the driving member 7 and the opening handle 6 are respectively fixed at the inner end and the outer end of the rotating shaft 9, synchronous rotation linkage of the driving member 7 and the opening handle 6 is realized through the rotating shaft 9, and a bearing may be disposed between the rotating shaft 9 and the mechanism case 1 to ensure flexibility of rotation; the driving piece 7 comprises a fixed connection block 71 fixedly connected with the rotating shaft 9 and a driving shaft 72 fixed on the fixed connection block 71, a limiting column 11 is fixed on the inner wall of the mechanism box body 1, and the fixed connection block 71 is abutted against the limiting column 11 when the brake separating handle 6 is at an initial position, so that the brake separating handle 6 is abutted and limited at the initial position.
As a specific solution in the above embodiments, the return spring 8 in this embodiment is a tension spring, and the tension spring is connected between the fixed connecting block 71 and a tension spring hook 12, and the tension spring hook 12 is fixed on the mechanism case 1, so that the tension spring is installed in a hanging manner.
In a preferable scheme of this embodiment, as shown in fig. 5 to 6, the bottom end of each insulating pull rod 4 is connected with a connecting block 41, and the connecting block 41 is fixed on the movable iron core of the permanent magnetic device 31, a connecting crank 52 is fixed on the driving spindle 5 at a position corresponding to each connecting block 41, a connecting slot 411 is arranged on the connecting block 41, a connecting arm 521 is arranged on the connecting crank 52, and the connecting slot 411 and the connecting arm 521 are inserted and matched to form the linkage structure; the connecting crank arm 52 in the present embodiment is connected with the connecting slot 411 in a plug-in fit manner, so that the rotation of the driving spindle 5 is related to the up-and-down movement of the insulating pull rod 4.
In a further preferable scheme of this embodiment, as shown in fig. 5 to fig. 6, in this embodiment, a plurality of connection slots 411 are arranged on each connection block 41 at intervals, rib plates are formed between adjacent connection slots 411, the number of the connection arms 521 is equal to that of the connection slots 411, and the connection arms 521 are correspondingly inserted into the connection slots 411 one by one, so that the connection is reliable and effective through the one-to-one insertion and cooperation of the connection slots 411 and the connection crank arms 52, and can bear greater stress, and the strength of the connection block 41 is ensured due to the rib plates.
It is obvious that the above embodiments of the present invention are only examples for clearly illustrating the present invention, and are not limitations to the embodiments of the present invention. Other variations and modifications will be apparent to persons skilled in the art in light of the above description. This need not be, nor should it be exhaustive of all embodiments. And such obvious changes and modifications which fall within the spirit of the invention are deemed to be covered by the present invention.
Claims (6)
1. A three-phase column type vacuum circuit breaker comprises a mechanism box body (1), three solid-sealed polar columns (2) fixed on the mechanism box body (1) and operating mechanisms (3) arranged in the mechanism box body (1), wherein the three operating mechanisms (3) are respectively and correspondingly connected with moving contacts on vacuum arc-extinguishing chambers in the solid-sealed polar columns (2) through an insulating pull rod (4), each operating mechanism (3) comprises a permanent magnet device (31) and a breaking spring (32), the permanent magnet device (31) drives the insulating pull rod (4) to control the vacuum arc-extinguishing chambers when being electrified, the breaking spring (32) drives the insulating pull rod (4) to control the vacuum arc-extinguishing chambers to break when the permanent magnet device (31) is powered off, the three operating mechanisms (3) are characterized in that a driving main shaft (5) is arranged in the mechanism box body (1) along the arrangement direction of the three operating mechanisms (3), the driving main shaft (5) is synchronously linked and connected with the three insulating pull rods (4) through a linkage structure, a connecting lever (51) is fixed at one end of the driving main shaft (5), a breaking handle (6) is arranged outside the box body (1), and a driving piece (7) is arranged on a driving piece and a driving piece (7) and is arranged on a driving piece path, when the brake separating handle (6) is in brake separating rotation, the driving part (7) abuts against the transmission crank arm (51) to drive the driving main shaft (5) to rotate.
2. A three-phase column vacuum circuit breaker according to claim 1, characterized in that it further comprises a return spring (8), under the action of which return spring (8) the opening handle (6) is in an initial position, in which the drive member (7) does not block the rotation of the transmission crank arm (51).
3. A three-phase column vacuum circuit breaker according to claim 2, wherein the mechanism case (1) is rotatably provided with a rotating shaft (9), and the driving member (7) and the opening handle (6) are respectively fixed at the inner and outer ends of the rotating shaft (9); the driving piece (7) comprises a fixedly connecting block (71) fixedly connected with the rotating shaft (9) and a driving shaft (72) fixed on the fixedly connecting block (71), a limiting column (11) is fixed on the inner wall of the mechanism box body (1), and the fixedly connecting block (71) is abutted against the limiting column (11) when the opening handle (6) is at an initial position.
4. A three-phase column vacuum circuit breaker according to claim 3, characterized in that the return spring (8) is a tension spring, which is connected between the fixed connection block (71) and a tension spring hook (12), the tension spring hook (12) being fixed to the mechanism case (1).
5. The vacuum circuit breaker as claimed in claim 3, wherein a connecting block (41) is connected to a bottom end of each insulating pull rod (4), the connecting block (41) is fixed to a movable iron core of the permanent magnet device (31), a connecting crank arm (52) is fixed to a position of the driving main shaft (5) corresponding to each connecting block (41), a connecting slot (411) is formed in the connecting block (41), a connecting arm (521) is arranged on the connecting crank arm (52), and the connecting slot (411) and the connecting arm (521) are in plugging fit to form the linkage structure.
6. The vacuum circuit breaker of claim 5, wherein a plurality of connecting slots (411) are formed in each connecting block (41) at intervals, rib plates are formed between adjacent connecting slots (411), the number of the connecting arms (521) is equal to that of the connecting slots (411), and the connecting arms (521) are correspondingly inserted into the connecting slots (411) one by one.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221162442.2U CN217641116U (en) | 2022-05-13 | 2022-05-13 | Three-phase column type vacuum circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202221162442.2U CN217641116U (en) | 2022-05-13 | 2022-05-13 | Three-phase column type vacuum circuit breaker |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN217641116U true CN217641116U (en) | 2022-10-21 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202221162442.2U Active CN217641116U (en) | 2022-05-13 | 2022-05-13 | Three-phase column type vacuum circuit breaker |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN217641116U (en) |
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2022
- 2022-05-13 CN CN202221162442.2U patent/CN217641116U/en active Active
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