CN114758930A - Replacement tool and replacement method for closing holding pawl of 3AV3 mechanism - Google Patents
Replacement tool and replacement method for closing holding pawl of 3AV3 mechanism Download PDFInfo
- Publication number
- CN114758930A CN114758930A CN202210536799.0A CN202210536799A CN114758930A CN 114758930 A CN114758930 A CN 114758930A CN 202210536799 A CN202210536799 A CN 202210536799A CN 114758930 A CN114758930 A CN 114758930A
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- Prior art keywords
- stay bar
- fixedly connected
- operating rod
- holding pawl
- closing holding
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- 230000007246 mechanism Effects 0.000 title claims abstract description 45
- 238000000034 method Methods 0.000 title claims abstract description 12
- 238000004146 energy storage Methods 0.000 claims abstract description 27
- 230000001681 protective effect Effects 0.000 claims description 25
- 238000001514 detection method Methods 0.000 claims description 19
- 230000006978 adaptation Effects 0.000 claims description 4
- 238000003825 pressing Methods 0.000 claims description 4
- 230000008859 change Effects 0.000 claims description 2
- 230000009471 action Effects 0.000 description 13
- 238000012790 confirmation Methods 0.000 description 7
- 230000008878 coupling Effects 0.000 description 4
- 238000010168 coupling process Methods 0.000 description 4
- 238000005859 coupling reaction Methods 0.000 description 4
- 230000008569 process Effects 0.000 description 3
- 230000003044 adaptive effect Effects 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000007792 addition Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
- 230000001960 triggered effect Effects 0.000 description 1
- 239000002699 waste material Substances 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
- H01H69/00—Apparatus or processes for the manufacture of emergency protective devices
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B3/00—Apparatus specially adapted for the manufacture, assembly, or maintenance of boards or switchgear
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02E—REDUCTION OF GREENHOUSE GAS [GHG] EMISSIONS, RELATED TO ENERGY GENERATION, TRANSMISSION OR DISTRIBUTION
- Y02E30/00—Energy generation of nuclear origin
- Y02E30/30—Nuclear fission reactors
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- Engineering & Computer Science (AREA)
- Manufacturing & Machinery (AREA)
- Power Engineering (AREA)
- Switch Cases, Indication, And Locking (AREA)
- Driving Mechanisms And Operating Circuits Of Arc-Extinguishing High-Tension Switches (AREA)
Abstract
The invention relates to a replacement tool and a replacement method for a closing holding pawl of a 3AV3 mechanism, which comprises a fixed stay bar and a rotary stay bar, wherein the fixed stay bar and the rotary stay bar are respectively propped against two frame side plates; the fixed stay bar comprises a positioning block and a connecting sleeve fixedly connected to one end of the positioning block; the rotary support rod comprises an operating rod, a rotary support block and a screw rod, the rotary support block is coupled to one end of the operating rod in a shaft mode, the screw rod is fixedly connected to the other end of the operating rod, at least two parallel operating surfaces are arranged on the operating rod, the screw rod is in threaded connection with the connecting sleeve, a brake separating press plate is fixedly connected to the fixed support rod and tightly pressed onto the brake separating button, and a limiting mechanism for limiting the fixed support rod to rotate is arranged on the side plate of the frame; the switching-on holding pawl replacing tool is simple in structure, convenient to operate, stable and reliable, and has a switching-off state and non-energy-storage state confirming mechanism before operation.
Description
Technical Field
The invention relates to the field of circuit breakers, in particular to the field of circuit breaker dismounting, and specifically relates to a replacement tool and a replacement method for a closing holding pawl of a 3AV3 mechanism.
Background
The circuit breaker matched with the 3AV3 circuit breaker mechanism has the problems of mechanism part abrasion, fit tolerance and the like, so that the normal opening and closing operation is influenced by a closing pawl and the circuit breaker needs to be replaced. In a traditional replacement mode, the 3AV3 breaker mechanism is required to be integrally disassembled, and the closing holding pawl is taken out and replaced after a mechanism frame side plate is disassembled. And because the 3AV3 breaker mechanism is positioned below the intermediate phase B-phase solid-sealed polar pole, the mechanism mounting screw is positioned at the bottom of the solid-sealed polar pole. Therefore, if the 3AV3 breaker mechanism needs to be disassembled, the B-phase pole must be disassembled first, and the disassembling process of the solid-sealed pole can be completed only by 2 persons operating at the same time due to the large volume and high self weight of the solid-sealed pole.
The two frame side plates of the circuit breaker can be unfolded outwards, so that the closing keeping pawl is taken out directly, the frame side plates are unfolded outwards without special tools, the circuit breaker is required to be in an opening state and a non-energy storage state during disassembly and assembly, and a state confirmation mechanism is not arranged during the existing disassembly and assembly, so that the circuit breaker is easy to close or operate in an energy storage state, and safety accidents are caused.
Disclosure of Invention
Aiming at the defects of the prior art, the invention provides a replacing tool and a replacing method of a closing holding pawl of a 3AV3 mechanism, which are convenient for replacing the closing holding pawl and have the functions of confirming an opening state and a non-energy storage state.
The invention is realized by the following technical scheme, and provides a 3AV3 mechanism closing holding pawl replacing tool which comprises a fixed stay bar and a rotary stay bar, wherein the fixed stay bar and the rotary stay bar are respectively propped against two frame side plates; the fixed stay bar comprises a positioning block and a connecting sleeve fixedly connected to one end of the positioning block; the rotary support rod comprises an operating rod, a rotary support block and a screw rod, the rotary support block is connected to one end of the operating rod in a shaft-to-shaft mode, the screw rod is fixedly connected to the other end of the operating rod, at least two parallel operating surfaces are arranged on the operating rod, the screw rod is in threaded connection with the connecting sleeve, a brake separating press plate tightly pressed on the brake separating button is further fixedly connected to the fixed support rod, and a limiting mechanism for limiting the fixed support rod to rotate is arranged on the side plate of the frame; the energy storage state detection device is characterized by further comprising a protective sleeve sleeved on the operating rod and a telescopic electromagnet driving the protective sleeve to avoid the operating rod, and a power line of the telescopic electromagnet is connected with the energy storage state detection switch in series.
In the scheme, the fixed support rod and the rotary support rod are in threaded connection and are respectively supported on the two frame side plates, the rotary support rod is rotated by operating the operating rod on the rotary support rod, the two frame side plates are outwards propped open, the replacement of a closing holding pawl is realized, a separating brake pressing plate fixed on the fixed support rod is pressed on a separating brake button, a mechanism is kept in a separating brake state, the protective sleeve is sleeved on the operating rod, the power line of the telescopic electromagnet is connected with the energy storage state detection switch in series, when the energy storage state detection switch detects that energy is not stored, the telescopic electromagnet is electrified, the driving protective sleeve is driven to move and avoid the operating rod, and the replacement operation can be carried out.
Preferably, the limiting mechanism comprises a positioning counter bore arranged on a side plate of the frame attached to the positioning block, and the positioning block is inserted into the positioning counter bore. In this scheme locating piece inserted the location counter bore, the location counter bore is not the round hole, makes the unable rotation of locating piece.
Preferably, a contact electrically connected with the telescopic electromagnet is fixedly connected to the end face of the positioning block, an elastic contact piece matched with the contact is fixedly connected to the positioning counter bore, and a power line of the telescopic electromagnet is electrically connected to the elastic contact piece. In this scheme, insert the location counter bore when fixed vaulting pole, just can realize being connected of flexible electro-magnet and power cord, just can change the operation.
Preferably, an insulating layer is arranged between the positioning block and the contact, and an insulating layer is arranged between the positioning counter bore and the elastic contact piece. The insulating layer in the scheme plays an insulating role.
Preferably, the positioning counter bore comprises two partially overlapped circular counter bores. The positioning counter bore in the scheme comprises two circular counter bores which are partially overlapped, so that the positioning block is prevented from rotating, and the two circular counter bores are convenient to process.
The telescopic electromagnet comprises a frame side plate, a switching-off connecting plate and a switching-off confirming switch, wherein the frame side plate is hinged to the frame side plate, one end of the switching-off connecting plate is matched with a switching-off button, the other end of the switching-off connecting plate is matched with the switching-off confirming switch, and the switching-off confirming switch is connected in series with a power line of the telescopic electromagnet. According to the scheme, the opening confirmation switch is connected in series with a power line of the telescopic electromagnet, and the power line of the electromagnet can be connected only when the opening confirmation switch detects an opening state.
Preferably, the cross section of the operating rod is a regular hexagon. The cross-section of action bars is regular hexagon in this scheme, is convenient for operate through the spanner.
Preferably, the telescopic electromagnet is fixedly connected to the fixed stay bar, the protective sleeve is fixedly connected to a telescopic shaft of the telescopic electromagnet, and the outer diameter of the connecting sleeve is smaller than the inner diameter of the protective sleeve. In the scheme, the outer diameter of the connecting sleeve is smaller than the inner diameter of the protective sleeve, so that the protective sleeve slides upwards the connecting sleeve.
A 3AV3 mechanism closing holding pawl replacement method, comprising the steps of:
a. the fixed stay bar and the rotary stay bar are in threaded connection and respectively propped against the two frame side plates, and the rotary stay bar is rotated by operating the operating rod on the rotary stay bar to outwards prop open the two frame side plates, so that the replacement of the closing holding pawl is realized;
b. the fixed stay bar is inserted into the positioning counter bore of the frame side plate, so that the fixed stay bar cannot rotate, and the opening press plate fixed on the fixed stay bar is pressed on the opening button, so that the mechanism keeps an opening state;
c. the protective sleeve is sleeved on the operating rod, a power line of the telescopic electromagnet is connected with the energy storage state detection switch in series, and when the energy storage state detection switch detects that energy is not stored, the telescopic electromagnet is powered on, so that the protective sleeve is driven to move and avoid the operating rod, and replacement operation can be carried out;
d. The fixed stay bar is fixedly connected with a contact electrically connected with the telescopic electromagnet, the positioning counter bore is fixedly connected with an elastic contact plate matched with the contact, the power line of the telescopic electromagnet is electrically connected to the elastic contact plate, and when the fixed stay bar is inserted into the positioning counter bore, the telescopic electromagnet can be connected with the power line, so that the replacement operation can be carried out.
The beneficial effects of the invention are as follows: the tool and the method for replacing the closing holding pawl of the 3AV3 mechanism solve the problems of complex replacing process and labor waste of the traditional closing holding pawl, and have the advantages of simple structure, convenient operation, stability and reliability. The automatic control device has the advantages that the automatic control device is provided with a brake-off state and non-energy-storage state confirmation mechanism before operation, the replacement in a switch-on state or energy-storage state is avoided, safety accidents are effectively avoided, and the automatic control device has the advantages of being simple in overall structure, high in safety, low in cost, convenient to operate, labor-saving, easy to popularize and the like.
Drawings
FIG. 1 is a schematic view of the structure of the present invention;
FIG. 2 is a side view of the present invention;
FIG. 3 is a schematic view of the structure of the fixed stay bar and the rotating stay bar of the present invention;
FIG. 4 is a schematic end view of a locating block of the present invention;
FIG. 5 is a schematic cross-sectional view of a positioning block and a positioning counterbore of the present invention;
Shown in the figure:
1. the device comprises a positioning block, 2, a connecting sleeve, 3, a screw rod, 4, an operating rod, 5, a rotary supporting block, 6, a protective sleeve, 7, a telescopic electromagnet, 8, a separating brake pressing plate, 9, a frame side plate, 10, a separating brake button, 11, a separating brake connecting plate, 12, a separating brake confirmation switch, 13, a contact, 14, an elastic contact piece, 15 and a positioning counter bore.
Detailed Description
In order to clearly explain the technical features of the present solution, the present solution is explained by the following detailed description.
As shown in fig. 1 to 5, the present invention provides a 3AV3 mechanism closing holding pawl replacing tool, which includes a fixed stay bar and a rotating stay bar respectively abutting against two frame side plates 9; as shown in fig. 1, the fixed strut and the pivoting strut are located between the two frame side plates 9, and the distance adjustment of the fixed strut and the pivoting strut causes the two frame side plates 9 to be spread apart, so that the closing holding pawl is replaced.
As shown in fig. 3, the fixed stay bar includes a positioning block 1 and a connecting sleeve 2 fixedly connected to one end of the positioning block 1; an inner ring of the connecting sleeve 2 is provided with an internal thread, and one end of the positioning block 1, which is far away from the connecting sleeve 2, is propped against one of the frame side plates 9.
Rotatory vaulting pole includes action bars 4, coupling at the rotatory vaulting piece 5 of 4 one ends of action bars and the screw rod 3 of rigid coupling at the 4 other ends of action bars, and rotatory vaulting piece 5 is kept away from the one end top of action bars 4 on another frame curb plate 9, be equipped with the operating surface of two at least parallels on the action bars 4, in this embodiment the cross-section of action bars 4 is regular hexagon, can rotate action bars 4 through the spanner, rotatory vaulting piece 5 support this moment on frame curb plate 9 and with frame curb plate 9 on not take place the rotation.
The screw rod 3 is in threaded connection with the connecting sleeve 2, so that the rotary supporting block 5 and the positioning block 1 can be expanded outwards by rotating the operating rod 4, and the two frame side plates 9 are expanded outwards.
The fixed stay bar is also fixedly connected with a brake separating pressure plate 8 which is tightly pressed on a brake separating button 10, and a limit mechanism which limits the rotation of the fixed stay bar is arranged on the frame side plate 9; the limiting mechanism enables the fixed stay bar not to rotate, so that the fixed stay bar is tightly pressed on the brake-separating button 10 through the brake-separating pressing plate 8, and the mechanism keeps a brake-separating state.
The limiting mechanism comprises a positioning counter bore 15 arranged on the frame side plate 9 attached to the positioning block 1, and the positioning block 1 is inserted into the positioning counter bore 15. As shown in fig. 4, the positioning counter bore 15 comprises two partially overlapped circular counter bores, the diameters of the two circular counter bores are different, and the cross-sectional shape of the positioning block 1 is the same as that of the positioning counter bore 15, so that the positioning block 1 can only be inserted into the positioning counter bore 15 at a specific angle and position, and the opening pressure plate 8 is pressed on the opening button 10.
Still dodge out flexible electro-magnet 7 of action bars 4 including protective sheath 6 and the drive protective sheath 6 of cover on action bars 4, flexible electro-magnet 7 rigid coupling is on fixed vaulting pole, the protective sheath 6 rigid coupling is on the telescopic shaft of flexible electro-magnet 7, connecting tube 2's external diameter is less than the internal diameter of protective sheath 6, and protective sheath 6 covers in the outer lane of action bars 4 to unable rotatory action bars operate, after the electro-magnet got to the electricity, drive protective sheath 6 and slide to connecting tube 2 on, thereby expose action bars 4, can carry out the rotation operation.
And a power line of the telescopic electromagnet 7 is connected with the energy storage state detection switch in series. The energy storage state detection switch is a detection switch installed on the energy storage mechanism and used for detecting whether the telescopic electromagnet is in an energy storage state or not, and when the energy storage state detection switch detects that the telescopic electromagnet is located in the energy storage state, the energy storage state detection switch is disconnected, so that the telescopic electromagnet 7 cannot be electrified.
As shown in fig. 2, still including articulating the separating brake even board 11 on the frame curb plate 9, the middle part of separating brake even board 11 is articulated with frame curb plate 9, the one end and the separating brake button 10 adaptation of separating brake even board 11, the separating brake even board 11 other end and separating brake confirm switch 12 adaptation, after separating brake button 10 was pressed, drive separating brake even board 11 swing, make the separating brake even board 11 other end trigger separating brake confirm switch 12, separating brake confirm switch 12 establishes ties on telescopic electromagnet 7's power cord, consequently when separating brake confirm switch 12 is not triggered, telescopic electromagnet 7's power cord here breaks off.
In order to ensure that an operator inserts the positioning block 1 into the positioning counterbore 15 when using the device, so as to press the opening button 10, the end face of the positioning block 1 is fixedly connected with a contact 13 electrically connected with the telescopic electromagnet 7, the positioning counterbore 15 is internally fixedly connected with an elastic contact piece 14 adaptive to the contact 13, and a power line of the telescopic electromagnet 7 is electrically connected to the elastic contact piece 14, the number of the contact 13 and the number of the elastic contact piece 14 in the embodiment are respectively two, and the two contacts correspond to a positive pole and a negative pole respectively, so that when the positioning block 1 is inserted into the positioning counterbore 15, the electromagnet cannot be powered.
An insulating layer is arranged between the positioning block 1 and the contact 13, and an insulating layer is arranged between the positioning counter bore 15 and the elastic contact piece 14.
During production and processing, each mechanism is provided with an energy storage state detection switch, a positioning counter bore 15, an elastic contact piece 14, a separating brake confirmation switch 12 and a power line of a telescopic electromagnet, and the fixed stay bar and the rotary stay bar can be used for replacing any mechanism. After the positioning block 1 is inserted into the positioning counter bore 15, the energy storage state detection switch detects that the positioning block is in an energy storage-free state, the brake-separating confirmation switch 12 detects that the positioning block is in a brake-separating state, and at the moment, the telescopic electromagnet is electrified.
A 3AV3 mechanism closing holding pawl replacement method, comprising the steps of:
a. the fixed stay bar and the rotary stay bar are in threaded connection and respectively propped against the two frame side plates 9, and the rotary stay bar is rotated by operating the operating rod on the rotary stay bar to outwards prop open the two frame side plates, so that the replacement of the closing holding pawl is realized;
b. the fixed stay bar is inserted into a positioning counter bore of a frame side plate, so that the fixed stay bar cannot rotate, and the opening pressure plate 8 fixed on the fixed stay bar is tightly pressed on the opening button 10, so that the mechanism keeps an opening state;
c. The protective sleeve 6 is sleeved on the operating rod 4, a power line of the telescopic electromagnet 7 is connected with the energy storage state detection switch in series, and when the energy storage state detection switch detects that energy is not stored, the telescopic electromagnet 7 is electrified, so that the protective sleeve 6 is driven to move and the operating rod 4 is avoided, and the replacement operation can be carried out;
d. the fixed stay bar is fixedly connected with a contact 13 electrically connected with the telescopic electromagnet 7, the positioning counter bore 15 is fixedly connected with an elastic contact plate 14 adaptive to the contact 13, the power line of the telescopic electromagnet 7 is electrically connected with the elastic contact plate 14, and when the fixed stay bar is inserted into the positioning counter bore, the connection between the telescopic electromagnet 7 and the power line can be realized, and the replacement operation can be carried out.
Of course, the above description is not limited to the above examples, and the undescribed technical features of the present invention may be implemented by or using the prior art, which is not described herein again; while the present invention has been described in detail with reference to the preferred embodiments, it will be understood by those skilled in the art that various changes, modifications, additions and substitutions may be made without departing from the spirit of the invention and the scope of the invention as defined in the accompanying claims.
Claims (9)
1. The utility model provides a 3AV3 mechanism combined floodgate keeps pawl to change frock which characterized in that: comprises a fixed stay bar and a rotary stay bar which are respectively propped against two frame side plates (9);
the fixed support rod comprises a positioning block (1) and a connecting sleeve (2) fixedly connected to one end of the positioning block (1);
the rotating support rod comprises an operating rod (4), a rotating support block (5) connected to one end of the operating rod (4) in a shaft joint mode, and a screw (3) fixedly connected to the other end of the operating rod (4), at least two parallel operating faces are arranged on the operating rod (4), the screw (3) is in threaded connection with the connecting sleeve (2), a brake separating pressing plate (8) tightly pressed on a brake separating button (10) is fixedly connected to the fixed support rod, and a limiting mechanism for limiting the rotation of the fixed support rod is arranged on the frame side plate (9);
the energy storage state detection device is characterized by further comprising a protective sleeve (6) sleeved on the operating rod (4) and a telescopic electromagnet (7) for driving the protective sleeve (6) to avoid the operating rod (4), wherein a power line of the telescopic electromagnet (7) is connected with the energy storage state detection switch in series.
2. The 3AV3 mechanism closing holding pawl replacing tool as claimed in claim 1, wherein: the limiting mechanism comprises a positioning counter bore (15) arranged on a frame side plate (9) attached to the positioning block (1), and the positioning block (1) is inserted into the positioning counter bore (15).
3. The 3AV3 mechanism closing holding pawl replacing tool according to claim 2, wherein: the end face of the positioning block (1) is fixedly connected with a contact (13) electrically connected with the telescopic electromagnet (7), an elastic contact piece (14) matched with the contact (13) is fixedly connected in the positioning counter bore (15), and a power line of the telescopic electromagnet (7) is electrically connected to the elastic contact piece (14).
4. The 3AV3 mechanism closing holding pawl replacing tool according to claim 3, wherein: an insulating layer is arranged between the positioning block (1) and the contact (13), and an insulating layer is arranged between the positioning counter bore (15) and the elastic contact piece (14).
5. The 3AV3 mechanism closing holding pawl replacing tool according to claim 2, wherein: the positioning counter bore (15) comprises two partially overlapped circular counter bores.
6. The 3AV3 mechanism closing holding pawl replacing tool as claimed in claim 1, wherein: still including articulating separating brake even board (11) on frame curb plate (9), the one end and the separating brake button (10) adaptation of separating brake even board (11), separating brake even board (11) other end and separating brake confirm switch (12) adaptation, separating brake confirm switch (12) are established ties on the power cord of flexible electro-magnet (7).
7. The 3AV3 mechanism closing holding pawl replacing tool as claimed in claim 1, wherein: the cross section of the operating rod (4) is a regular hexagon.
8. The 3AV3 mechanism closing holding pawl replacing tool as claimed in claim 1, wherein: the telescopic electromagnet (7) is fixedly connected to the fixed support rod, the protective sleeve (6) is fixedly connected to a telescopic shaft of the telescopic electromagnet (7), and the outer diameter of the connecting sleeve (2) is smaller than the inner diameter of the protective sleeve (6).
9. A 3AV3 mechanism closing holding pawl changing method, comprising the steps of:
a. the fixed stay bar and the rotary stay bar are in threaded connection and respectively propped against the two frame side plates, and the rotary stay bar is rotated by operating the operating rod on the rotary stay bar to outwards prop open the two frame side plates, so that the replacement of the closing holding pawl is realized;
b. the fixed stay bar is inserted into the positioning counter bore of the frame side plate, so that the fixed stay bar cannot rotate, and the opening press plate fixed on the fixed stay bar is pressed on the opening button, so that the mechanism keeps an opening state;
c. the protective sleeve is sleeved on the operating rod, a power line of the telescopic electromagnet is connected with the energy storage state detection switch in series, and when the energy storage state detection switch detects that energy is not stored, the telescopic electromagnet is electrified, so that the protective sleeve is driven to move and the operating rod is avoided, and the replacement operation can be carried out;
d. The fixed stay bar is fixedly connected with a contact electrically connected with the telescopic electromagnet, the positioning counter bore is fixedly connected with an elastic contact plate matched with the contact, the power line of the telescopic electromagnet is electrically connected to the elastic contact plate, and when the fixed stay bar is inserted into the positioning counter bore, the telescopic electromagnet can be connected with the power line, so that the replacement operation can be carried out.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210536799.0A CN114758930B (en) | 2022-05-18 | 2022-05-18 | 3AV3 mechanism closing retaining pawl replacement tool and replacement method |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202210536799.0A CN114758930B (en) | 2022-05-18 | 2022-05-18 | 3AV3 mechanism closing retaining pawl replacement tool and replacement method |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN114758930A true CN114758930A (en) | 2022-07-15 |
| CN114758930B CN114758930B (en) | 2024-04-26 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202210536799.0A Active CN114758930B (en) | 2022-05-18 | 2022-05-18 | 3AV3 mechanism closing retaining pawl replacement tool and replacement method |
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| CN (1) | CN114758930B (en) |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09161624A (en) * | 1995-12-06 | 1997-06-20 | Mitsubishi Electric Corp | Closing and tripping device for circuit breaker |
| US20080196606A1 (en) * | 2007-02-20 | 2008-08-21 | Xerox Corporation | Efficient cross-stream printing system |
| CN201927539U (en) * | 2010-12-03 | 2011-08-10 | 侯立身 | Modular spring operating mechanism for high voltage vacuum circuit breaker |
| CN215220536U (en) * | 2021-07-29 | 2021-12-17 | 宁波市江北宏盛高压电器液压机械有限公司 | Closing pawl for high-voltage switch |
-
2022
- 2022-05-18 CN CN202210536799.0A patent/CN114758930B/en active Active
Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JPH09161624A (en) * | 1995-12-06 | 1997-06-20 | Mitsubishi Electric Corp | Closing and tripping device for circuit breaker |
| US20080196606A1 (en) * | 2007-02-20 | 2008-08-21 | Xerox Corporation | Efficient cross-stream printing system |
| CN201927539U (en) * | 2010-12-03 | 2011-08-10 | 侯立身 | Modular spring operating mechanism for high voltage vacuum circuit breaker |
| CN215220536U (en) * | 2021-07-29 | 2021-12-17 | 宁波市江北宏盛高压电器液压机械有限公司 | Closing pawl for high-voltage switch |
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| Publication number | Publication date |
|---|---|
| CN114758930B (en) | 2024-04-26 |
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