CN112530755A - Frame circuit breaker operating device's separating brake hasp structure and this circuit breaker - Google Patents
Frame circuit breaker operating device's separating brake hasp structure and this circuit breaker Download PDFInfo
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- CN112530755A CN112530755A CN201910883493.0A CN201910883493A CN112530755A CN 112530755 A CN112530755 A CN 112530755A CN 201910883493 A CN201910883493 A CN 201910883493A CN 112530755 A CN112530755 A CN 112530755A
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- separating brake
- circuit breaker
- hasp
- lock catch
- half shaft
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- 230000007246 mechanism Effects 0.000 claims abstract description 30
- 238000000034 method Methods 0.000 claims abstract description 10
- 238000000926 separation method Methods 0.000 claims description 9
- 230000006835 compression Effects 0.000 claims description 4
- 238000007906 compression Methods 0.000 claims description 4
- 230000000694 effects Effects 0.000 claims description 4
- 230000008569 process Effects 0.000 abstract description 6
- 238000010586 diagram Methods 0.000 description 7
- 230000009471 action Effects 0.000 description 2
- 230000007547 defect Effects 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 238000012544 monitoring process Methods 0.000 description 2
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 239000004020 conductor Substances 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 230000005405 multipole Effects 0.000 description 1
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Classifications
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H71/00—Details of the protective switches or relays covered by groups H01H73/00 - H01H83/00
- H01H71/10—Operating or release mechanisms
- H01H71/1009—Interconnected mechanisms
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- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
- Breakers (AREA)
Abstract
The utility model provides a frame circuit breaker operating device's separating brake hasp structure and this circuit breaker, operating device's separating brake hasp (1) is including separating brake cramp (11) and pivot (12), separating brake hasp (1) is located a pair of face-to-face relative and between curb plate (2) of establishing, separating brake cramp (11) dress is on separating brake rotation axis (13), separating brake hasp (1) and operating device's intermediate linkage (4) and separating brake semi-axis (5) linkage, its characterized in that: the rotating shaft (12) is connected with at least one opening lock catch control reset device (A); the opening lock catch structure utilizes the opening lock catch to control the reset device to control the opening lock catch so that the opening lock catch and a contact system of the circuit breaker can be quickly opened through the upper connecting rod and the lower connecting rod in the linkage process, and an operating mechanism can return to a normal opening state after the opening lock catch rotates clockwise to the maximum stroke so as to be in preparation for the next normal opening and closing of the circuit breaker.
Description
Technical Field
The invention belongs to the technical field of circuit breakers, and particularly relates to a switching-off locking structure of a frame circuit breaker operating mechanism and a circuit breaker.
Background
In the field of low-voltage electrical appliances, a frame circuit breaker is generally a main protection switch on a power supply side, so that the frame circuit breaker has extremely high requirements on the breaking capacity, the breaking capacity of the frame circuit breaker is challenged along with the continuous improvement of the rated working voltage of the frame circuit breaker, and the problem that how to reliably break fault current of the frame circuit breaker under the conditions of high voltage and large current is difficult is particularly obvious when the frame circuit breaker is applied to a high-voltage IT system.
The operating mechanism of the frame circuit breaker is generally only an actuating element, and only receives signals of a controller and components such as shunt, close and undervoltage to drive a contact system of the frame circuit breaker to close and open a brake, and the operating mechanism also does not have the function of actively monitoring the current of the contact system under the condition of a large-current short circuit and the capacity of actively cutting off the short-circuit current under the condition of a large current, so that the improvement of the short-circuit breaking capacity of the frame circuit breaker is restricted.
In order to make up for the above defects, the short-circuit breaking capacity of the frame circuit breaker is improved, so that the structure of the operating mechanism needs to be improved, and the operating mechanism is designed into a structure capable of monitoring the current of the contact system and actively opening the brake under the condition of large-current short circuit.
The prior art Chinese patent 99111495.7 discloses a single-pole or multi-pole circuit breaker, which relates to a part of structural design to improve the above problems, wherein the circuit breaker splits a switching-off lock catch into a lock catch part and an unlock part, under the condition of normal current, the unlock part and the lock catch part are integrated through a pressure spring, the switching-off lock catch only plays a locking function, when a contact system generates short-circuit current, the switching-off lock catch bears extra pressure, the pressure spring is compressed, the unlock part rotates to trigger a switching-off half shaft to act, and therefore, a product is switched off. However, the split-gate lock catch in the technical scheme has a complex structure and is not easy to assemble; the parts of the locking plate and the unlocking plate in the separating lock catch have high precision requirement and large processing difficulty; meanwhile, due to the structural limitation of the locking plate, the service life of parts is short.
The prior art chinese patent 201310197219.0 discloses a circuit breaker operating mechanism with a trip locking device capable of quickly tripping during short circuit, which is similar to chinese patent 99111495.7, in which an opening lock catch is separated into an opening buckle piece and a rotating shaft, and the opening lock catch buckle piece is integrated with the rotating center through a tension spring. This separating brake hasp structure is too simple, the one side is considered to the function, rotate through the separating brake hasp and make operating device dropout back, can't drive separating brake semi-axis dropout, operating device can't resume normal separating brake state, operation instruction can produce in disorder before the next combined floodgate, simultaneously this scheme with after the separating brake hasp part split, the difficult assembly of separating brake hasp, separating brake cramp is to the precision in the separating brake hasp, the intensity demand is too high, the processing degree of difficulty is very big, adopt extension spring structure to respond to contact system current size simultaneously, it is short-lived to know the extension spring, very big influence product life.
Disclosure of Invention
The invention aims to solve the technical defects that the existing breaker operating mechanism is complex in opening lock catch structure, the opening half shaft cannot be driven to achieve a tripping state after the operating mechanism is tripped by the opening lock catch rotating, and the operating mechanism cannot be recovered to a normal opening state.
Technical scheme
In order to achieve the above technical object, the present invention provides an opening lock catch structure of a frame circuit breaker operating mechanism, wherein the opening lock catch comprises an opening lock catch piece and a rotating shaft, the opening lock catch is located between a pair of side plates which are oppositely arranged face to face, the opening lock catch piece is mounted on the rotating shaft, and the opening lock catch is linked with a middle connecting rod and an opening half shaft of the operating mechanism, and the opening lock catch structure is characterized in that: the rotating shaft is connected with at least one opening lock catch control resetting device;
the opening lock catch control resetting device is positioned in a sliding groove formed in any one side plate between the pair of side plates which are arranged oppositely face to face, and comprises a half shaft sleeve I, a half shaft sleeve II, a pressure spring and a pressure spring cushion block, wherein the half shaft sleeve I and the half shaft sleeve II are arranged in the sliding groove and can be combined or separated in a sliding mode, one end of the pressure spring abuts against the half shaft sleeve I or the half shaft sleeve II, and the other end of the pressure spring abuts against the wall of the sliding groove or the pressure spring cushion block;
and the end of the rotating shaft is inserted into a space between the first half shaft sleeve and the second half shaft sleeve.
Adopt the advantage and the effect of above-mentioned structure: 1) copper axle sleeve structure can effectively reduce the frictional resistance of separating brake hasp rotation axis department, 2), adopt this kind of curb plate spout structure, can be through the direction of adjustment spout, reduce the power value of separating brake hasp pressure spring that resets, it changes processing to reset the pressure spring, big complete structure is only a notion, in practice because mechanism volume restriction, it is too big to extend the power value, can't make the product at all, 3) all set up axle sleeve and pressure spring on the curb plate, separating brake hasp structure has been simplified, because the separating brake hasp is high accuracy and high strength spare part, need guarantee separating brake hasp wholeness, 4) adopt the pressure spring structure, the pressure spring is longe-lived, guarantee product life.
Furthermore, the opening lock catch is provided with a tension spring which can enable the opening lock catch to rotate anticlockwise and reset.
Furthermore, the pressure spring props against the half shaft sleeve I or the half shaft sleeve II to enable the opening lock catch to only rotate around the rotating shaft when the circuit breaker is in a normal current state.
Further, bearing in the separating brake hasp with middle connecting rod linkage, the upside of separating brake hasp is provided with hasp portion and the linkage of separating brake semi-axis, middle connecting rod makes through propelling movement bearing when the circuit breaker is in short-circuit current the rotation axis makes in the spout along semi-axis sleeve one and two separation direction orbits of semi-axis sleeve move together, drive simultaneously the separating brake hasp clockwise rotates, the separating brake hasp along semi-axis sleeve one and two separation direction orbits of semi-axis sleeve just clockwise pivoted in-process, reduce through hasp portion and the half knot face of separating brake and realize the circuit breaker separating brake.
Further, can be in after the separating brake hasp rotates to maximum position clockwise the anticlockwise rotation resets under separating brake hasp control resetting means and the extension spring effect, simultaneously along the motion of half axle sleeve two merging directions, separating brake hasp anticlockwise rotation just along the motion of half axle sleeve two merging directions orbit in-process through the linkage portion in the separating brake buckle piece can drive the separating brake semi-axis rotates to make operating device resume normal separating brake state. By adopting the structure, the opening lock catch is reset to drive the opening half shaft to reset, so that the operating mechanism returns to the normal opening state to prepare for the next closing.
Furthermore, one end of the tension spring is arranged on a tension spring shaft I of the opening lock catch, and the other end of the tension spring is arranged on a tension spring shaft in the pair of side plates which are arranged oppositely face to face.
Furthermore, notches are formed in the first half shaft sleeve and the second half shaft sleeve, so that the first half shaft sleeve and the second half shaft sleeve can slide along the sliding groove.
The present invention also provides a frame circuit breaker, characterized in that: the opening lock catch structure of the operating mechanism of any one of the preceding claims, wherein the intermediate connecting rod is linked with a contact connecting rod, the contact connecting rod is linked with a contact system, and the contact and separation of the contact system can drive the intermediate connecting rod to move through the contact connecting rod so as to link the opening lock catch.
Advantageous effects
According to the opening lock catch structure of the frame breaker operating mechanism and the breaker, the opening lock catch is controlled by the opening lock catch control reset device to enable the operating mechanism to autonomously sense the short-circuit current of the contact system in the process that the opening lock catch and the contact system of the breaker are linked through the upper connecting rod and the lower connecting rod, autonomous opening can be achieved by the operating mechanism under the condition of large-current short circuit, the conductor loop of the contact system is rapidly cut off, and therefore the contact system is protected from being damaged by the short-circuit current.
Drawings
Fig. 1 is a schematic diagram of a closing state of a frame circuit breaker according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of an operating mechanism according to an embodiment of the present invention;
FIG. 3 is a schematic structural diagram of the opening latch according to the embodiment of the present invention;
FIG. 4 is a schematic structural diagram of a side plate assembly of the operating mechanism according to the embodiment of the present invention;
FIG. 5 is a schematic view of a linkage portion and a buckle portion of the opening buckle according to an embodiment of the present invention;
FIG. 6 is a schematic structural diagram of the embodiment of the present invention, in which when there is a short circuit fault, the moving and stationary contacts generate an electric repulsive force to push the opening latch to move to an amount of the buckle to be ended;
fig. 7 is a schematic view illustrating a rotational movement of the opening latch after the amount of the hasp between the opening latch and the opening half shaft disappears in the opening process of the circuit breaker according to the embodiment of the present invention;
fig. 8 is a schematic diagram illustrating that the opening lock returns to the initial position under the action of the tension spring and the compression spring and drives the opening half shaft to a trip state in the opening process of the circuit breaker according to the embodiment of the invention;
fig. 9 is a schematic structural diagram of a final opening state of the circuit breaker according to the embodiment of the invention;
FIG. 10 is a schematic view of a notch structure in the half axle sleeve according to an embodiment of the present invention;
Detailed Description
The present invention will be described in further detail with reference to the accompanying drawings and examples.
Examples
As shown in fig. 1 and 2, the frame circuit breaker comprises an opening lock catch structure of an operating mechanism B, wherein the intermediate connecting rod 4 is linked with the contact connecting rod 10, the contact connecting rod 10 is linked with the contact system 17, and the contact and separation of the contact system 17 can drive the intermediate connecting rod 4 to move through the contact connecting rod 10 so as to be linked with the opening lock catch 1.
The structure of the opening lock catch 1 shown in fig. 2 and 3 comprises an opening lock catch 11, a rotating shaft 12, a tension spring 13, a tension spring shaft 14 and a bearing 15, wherein the opening lock catch 1 is positioned between a pair of side plates 2 which are oppositely arranged face to face, the opening lock catch 11 is arranged on the rotating shaft 12, the opening lock catch 1 is linked with a middle connecting rod 4 and an opening half shaft 5 of an operating mechanism, and the rotating shaft 12 is connected with at least one opening lock catch control resetting device a;
as shown in fig. 3 and 4, the opening locking and resetting control device a is located in a sliding groove 2a formed in any side plate between the pair of side plates 2 which are arranged oppositely face to face, the opening locking and resetting control device a comprises a first half shaft sleeve 6, a second half shaft sleeve 7, a compression spring 8 and a compression spring cushion block 9, the first half shaft sleeve 6 and the second half shaft sleeve 7 are arranged in the sliding groove 2a and can be combined or separated in a sliding manner, and as shown in fig. 10, notches 67 are formed in the first half shaft sleeve 6 and the second half shaft sleeve 7 and can ensure that the first half shaft sleeve 6 and the second half shaft sleeve 7 can slide along the sliding groove 2 a. One end of the pressure spring 8 props against the first half shaft sleeve 6 or the second half shaft sleeve 7, the other end of the pressure spring props against the sliding groove wall 2a or the pressure spring cushion block 9, and the pressure spring 8 props against the first half shaft sleeve 6 or the second half shaft sleeve 7 to enable the opening lock catch 1 to only rotate around the rotating shaft 12 when the circuit breaker is in a normal current state.
The end of the rotating shaft 12 is inserted into the space between the half shaft sleeve I6 and the half shaft sleeve II 7. In this embodiment, as shown in fig. 3, the opening lock catch 1 is provided with a tension spring 13, so that the opening lock catch can be reset by rotating counterclockwise. One end of the tension spring 13 is arranged on a tension spring shaft I14 of the opening lock catch 1, and the other end of the tension spring is arranged on a tension spring shaft 3 in the pair of side plates 2 which are oppositely arranged face to face.
As shown in fig. 3, fig. 4 and fig. 5, the lower side of the opening lock catch 1 is provided with a bearing 15 and is linked with the intermediate connecting rod 4, the upper side of the opening lock catch 1 is provided with a buckle part 102 and is linked with the opening half shaft 5, the intermediate connecting rod 4 enables the rotating shaft 12 to move together along the separation direction track of the first half shaft sleeve 6 and the second half shaft sleeve 7 in the sliding groove 2a by pushing the bearing 15 when the breaker is in short-circuit current, and simultaneously drives the opening lock catch 1 to rotate clockwise, and in the process that the opening lock catch 1 moves along the separation direction track of the first half shaft sleeve 6 and the second half shaft sleeve 7 and rotates clockwise, the opening of the breaker is realized by reducing the buckle surfaces of the buckle part 102 and the opening half shaft 5, as shown in fig. 6 and fig. 7.
As shown in fig. 8 and 9, after clockwise rotating to the maximum position, the opening lock catch 1 can rotate counterclockwise to reset under the action of the opening lock catch control resetting device a and the tension spring 13, and simultaneously move along the combining direction of the first half shaft sleeve 6 and the second half shaft sleeve 7, and the opening lock catch 1 rotates counterclockwise and can drive the opening half shaft 5 to rotate through the linkage part 101 in the opening lock catch 11 during the track movement process along the combining direction of the first half shaft sleeve 6 and the second half shaft sleeve 7, so that the operating mechanism is restored to the normal opening state as shown in fig. 9.
Claims (8)
1. The utility model provides a frame circuit breaker operating device's separating brake hasp structure, separating brake hasp (1) is including separating brake cramp (11) and rotation axis (12), separating brake hasp (1) is located a pair of face-to-face relative and between curb plate (2) of establishing, separating brake cramp (11) dress is on rotation axis (12), separating brake hasp (1) and operating device's intermediate linkage (4) and separating brake semi-axis (5) linkage, its characterized in that: the rotating shaft (12) is connected with at least one opening lock catch control reset device (A);
the opening lock catch control resetting device (A) is positioned in a sliding groove (2a) formed in any side plate between the pair of side plates (2) which are arranged oppositely face to face, the opening lock catch control resetting device (A) comprises a first half shaft sleeve (6), a second half shaft sleeve (7), a pressure spring (8) and a pressure spring cushion block (9), the first half shaft sleeve (6) and the second half shaft sleeve (7) are arranged in the sliding groove (2a) and can be combined or separated in a sliding mode, one end of the pressure spring (8) abuts against the first half shaft sleeve (6) or the second half shaft sleeve (7), and the other end of the pressure spring abuts against the sliding groove wall (2a) or the pressure spring cushion block (9);
the end of the rotating shaft (12) is inserted into a space between the half shaft sleeve I (6) and the half shaft sleeve II (7).
2. The opening locking structure of the frame circuit breaker operating mechanism according to claim 1, wherein: the opening lock catch (1) is provided with a tension spring (13) which can enable the opening lock catch to rotate anticlockwise and reset.
3. The opening locking structure of the frame circuit breaker operating mechanism according to claim 1, wherein: the compression spring (8) props against the first half shaft sleeve (6) or the second half shaft sleeve (7) to enable the opening lock catch to only rotate around the rotating shaft (12) when the circuit breaker is in a normal current state.
4. The opening locking structure of the frame circuit breaker operating mechanism according to claim 1, wherein: bearing (15) in separating brake hasp (1) with intermediate linkage (4) linkage, the upside of separating brake hasp is provided with hasp portion (102) and separating brake semi-axis (5) linkage, intermediate linkage (4) make through propelling bearing (15) when the circuit breaker is in short-circuit current rotation axis (12) are in spout (2a) along semi-axis sleeve (6) and two (7) separation direction orbits of semi-axis sleeve move together, drive simultaneously separating brake hasp (1) clockwise turning, separating brake hasp (1) along semi-axis sleeve (6) and two (7) separation direction orbits of semi-axis sleeve move and clockwise turning's in-process, reduce through the profile of hasp portion (102) and separating brake semi-axis (5) and realize the circuit breaker separating brake.
5. The opening locking structure of the frame circuit breaker operating mechanism according to claim 1, wherein: separating brake hasp (1) clockwise rotate can be in behind the maximum position separating brake hasp control resetting means (A) and extension spring (13) effect anticlockwise rotation resets down, simultaneously along semi-axis sleeve (6) and two (7) merge direction movements of semi-axis sleeve, separating brake hasp (1) anticlockwise rotation and along semi-axis sleeve (6) and two (7) merge direction orbit motion in-process can drive through linkage portion (101) in separating brake cramp (11) separating brake semi-axis (5) rotate to make operating device resume normal separating brake state.
6. The opening locking structure of the frame circuit breaker operating mechanism according to claim 2, wherein: one end of the tension spring (13) is arranged on a tension spring shaft I (14) of the opening lock catch (1), and the other end of the tension spring is arranged on a tension spring shaft (3) in the pair of side plates (2) which are arranged oppositely face to face.
7. The opening locking structure of the frame circuit breaker operating mechanism according to claim 1, wherein: the half shaft sleeve I (6) and the half shaft sleeve II (7) are provided with notches (67) which can ensure that the half shaft sleeve I (6) and the half shaft sleeve II (7) slide along the sliding groove (2 a).
8. A frame circuit breaker, characterized by: the opening lock catch structure comprises the operating mechanism as claimed in any one of the preceding claims, wherein the intermediate connecting rod (4) is linked with a contact connecting rod (11), the contact connecting rod (11) is linked with a contact system (12), and the contact and separation of the contact system (12) can drive the intermediate connecting rod (4) to move through the contact connecting rod (11) so as to link the opening lock catch (1).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910883493.0A CN112530755B (en) | 2019-09-18 | 2019-09-18 | Opening lock catch structure of frame circuit breaker operating mechanism and circuit breaker |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201910883493.0A CN112530755B (en) | 2019-09-18 | 2019-09-18 | Opening lock catch structure of frame circuit breaker operating mechanism and circuit breaker |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112530755A true CN112530755A (en) | 2021-03-19 |
| CN112530755B CN112530755B (en) | 2024-07-16 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201910883493.0A Active CN112530755B (en) | 2019-09-18 | 2019-09-18 | Opening lock catch structure of frame circuit breaker operating mechanism and circuit breaker |
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| Country | Link |
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| CN (1) | CN112530755B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113948349A (en) * | 2021-10-28 | 2022-01-18 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Piezoelectric tripping mechanism for circuit breaker |
| CN115148558A (en) * | 2021-03-31 | 2022-10-04 | 上海良信电器股份有限公司 | Operating mechanism of switch |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253371A (en) * | 1998-07-29 | 2000-05-17 | 施耐德电器工业公司 | Circuit breaker possessing high power strength and breaking capability |
| CN103325632A (en) * | 2013-07-26 | 2013-09-25 | 大全集团有限公司 | Circuit breaker operating mechanism capable of tripping quickly |
| CN109243932A (en) * | 2018-10-11 | 2019-01-18 | 上海永继电气股份有限公司 | A kind of breaker operator system |
| CN211150458U (en) * | 2019-09-18 | 2020-07-31 | 上海良信电器股份有限公司 | Frame circuit breaker operating device's separating brake hasp structure and this circuit breaker |
-
2019
- 2019-09-18 CN CN201910883493.0A patent/CN112530755B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1253371A (en) * | 1998-07-29 | 2000-05-17 | 施耐德电器工业公司 | Circuit breaker possessing high power strength and breaking capability |
| CN103325632A (en) * | 2013-07-26 | 2013-09-25 | 大全集团有限公司 | Circuit breaker operating mechanism capable of tripping quickly |
| CN109243932A (en) * | 2018-10-11 | 2019-01-18 | 上海永继电气股份有限公司 | A kind of breaker operator system |
| CN211150458U (en) * | 2019-09-18 | 2020-07-31 | 上海良信电器股份有限公司 | Frame circuit breaker operating device's separating brake hasp structure and this circuit breaker |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN115148558A (en) * | 2021-03-31 | 2022-10-04 | 上海良信电器股份有限公司 | Operating mechanism of switch |
| CN113948349A (en) * | 2021-10-28 | 2022-01-18 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Piezoelectric tripping mechanism for circuit breaker |
| CN113948349B (en) * | 2021-10-28 | 2023-12-12 | 武汉船用电力推进装置研究所（中国船舶重工集团公司第七一二研究所） | Piezoelectric tripping mechanism for circuit breaker |
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|---|---|
| CN112530755B (en) | 2024-07-16 |
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