CN112993839B - Electric chassis truck - Google Patents
Electric chassis truck Download PDFInfo
- Publication number
- CN112993839B CN112993839B CN202110127374.XA CN202110127374A CN112993839B CN 112993839 B CN112993839 B CN 112993839B CN 202110127374 A CN202110127374 A CN 202110127374A CN 112993839 B CN112993839 B CN 112993839B
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- Prior art keywords
- locking
- rotating shaft
- stop pin
- circuit breaker
- lock plate
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- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
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Classifications
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/127—Withdrawal mechanism
- H02B11/133—Withdrawal mechanism with interlock
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H33/00—High-tension or heavy-current switches with arc-extinguishing or arc-preventing means
- H01H33/60—Switches wherein the means for extinguishing or preventing the arc do not include separate means for obtaining or increasing flow of arc-extinguishing fluid
- H01H33/66—Vacuum switches
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01H—ELECTRIC SWITCHES; RELAYS; SELECTORS; EMERGENCY PROTECTIVE DEVICES
- H01H9/00—Details of switching devices, not covered by groups H01H1/00 - H01H7/00
- H01H9/20—Interlocking, locking, or latching mechanisms
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02B—BOARDS, SUBSTATIONS OR SWITCHING ARRANGEMENTS FOR THE SUPPLY OR DISTRIBUTION OF ELECTRIC POWER
- H02B11/00—Switchgear having carriage withdrawable for isolation
- H02B11/12—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal
- H02B11/167—Switchgear having carriage withdrawable for isolation with isolation by horizontal withdrawal truck type
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/06—Means for converting reciprocating motion into rotary motion or vice versa
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- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02K—DYNAMO-ELECTRIC MACHINES
- H02K7/00—Arrangements for handling mechanical energy structurally associated with dynamo-electric machines, e.g. structural association with mechanical driving motors or auxiliary dynamo-electric machines
- H02K7/10—Structural association with clutches, brakes, gears, pulleys or mechanical starters
- H02K7/116—Structural association with clutches, brakes, gears, pulleys or mechanical starters with gears
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- 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
- Y02T—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO TRANSPORTATION
- Y02T10/00—Road transport of goods or passengers
- Y02T10/60—Other road transportation technologies with climate change mitigation effect
- Y02T10/70—Energy storage systems for electromobility, e.g. batteries
Landscapes
- Engineering & Computer Science (AREA)
- Power Engineering (AREA)
- Trip Switchboards (AREA)
Abstract
The invention relates to an electric chassis truck which comprises a frame, a positioning mechanism, a motor, a transmission mechanism, a screw rod, a nut gear, a bracket, a mechanical locking mechanism and an emergency brake separating mechanism, wherein the mechanical locking mechanism comprises a locking stop pin, a stop pin sliding limiting block, a spring and a stay wire, and the stay wire is connected with the locking stop pin and a brake separating and closing sliding block in a permanent magnet vacuum circuit breaker. The emergency brake separating mechanism comprises an installation bent plate and a three-layer sleeve rotating shaft, wherein three layers of the three-layer sleeve rotating shaft can axially stretch and slide but cannot axially rotate, the inner layer of the three-layer sleeve rotating shaft is an emergency brake separating operation shaft and is connected with the installation bent plate through a pin, and the rear end of the outer layer sleeve of the three-layer sleeve rotating shaft is connected with an emergency brake separating rod on the permanent magnet vacuum circuit breaker. The invention has the advantages of adapting the I SM permanent magnet vacuum circuit breaker, improving the intelligent level of a high-voltage switch cabinet matched with the circuit breaker, realizing the mechanical and electrical interlocking of the I SM permanent magnet vacuum circuit breaker and an electric chassis, preventing misoperation and the like.
Description
Technical Field
The invention relates to the technical field of electric chassis vehicles, in particular to an electric chassis vehicle used in a high-voltage switch cabinet.
Background
Along with the progress of the manufacturing process of the power equipment, the power supply quality of the power equipment is more and more stable, and in order to further improve the automation level of a power system, each unit in the power supply industry comprehensively expands the intelligent upgrading and reconstruction work of the transformer substation. In order to enable the centrally-mounted vacuum circuit breaker to conveniently realize the functions of pushing in (pushing in the working position from the test position and locking) and withdrawing (withdrawing from the working position from the test position and locking), a chassis is generally adopted to carry the vacuum circuit breaker and realize the pushing in and withdrawing of the vacuum circuit breaker. At present, when the high-voltage switch cabinet is subjected to power failure maintenance, the in-out operation of the chassis is mainly completed manually by an operator on site by using a handle. In order to further reduce the workload of operators, personal injury to the operators is avoided, complete power-off and power-on work can be realized under the condition of 'unmanned' on site, and the chassis truck is required to electrically complete an electric operation instruction sent remotely or on site. The ISM permanent magnet vacuum circuit breaker is widely applied to power plants, substations and other industrial fields due to the technical advantages of long service life, high reliability, small volume, no maintenance and the like. However, because the structure of the electric chassis is different from that of a common vacuum circuit breaker, the conventional electric chassis cannot be directly used for the circuit breaker, so that no suitable electric chassis is used for the circuit breaker.
For this purpose we have developed an electric chassis to solve the above drawbacks.
Disclosure of Invention
The invention aims to overcome the defects of the prior art and provide an electric chassis vehicle, which has the advantages of being adaptive to an ISM permanent magnet vacuum circuit breaker, improving the intelligent level of a high-voltage switch cabinet matched with the circuit breaker, realizing the mechanical and electrical interlocking of the ISM permanent magnet vacuum circuit breaker and the electric chassis vehicle, preventing misoperation and the like.
In order to achieve the above purpose, the invention adopts the following technical scheme: the electric chassis truck comprises a frame, a positioning mechanism, a motor, a transmission mechanism, a screw gear, a screw rod and a bracket, wherein the bracket is fixedly connected to the frame, the motor is connected with the screw gear through the transmission mechanism, and the screw gear is connected with the screw rod through a thread groove;
the mechanical locking mechanism comprises a locking stop pin, a stop pin sliding limiting block, a spring and a stay wire, wherein a sliding groove is formed in the top end of the stop pin sliding limiting block, the locking stop pin is in sliding connection with the stop pin sliding limiting block, the spring is in abutting connection with the middle of the locking stop pin, and the stay wire is arranged at the top end of the locking stop pin;
the emergency brake separating mechanism comprises a mounting bent plate and a three-layer sleeve rotating shaft, the mounting bent plate is fixedly arranged above the positioning mechanism, one end of the three-layer sleeve rotating shaft is connected with the mounting bent plate, and the other end of the three-layer sleeve rotating shaft is connected to an emergency brake separating rod of the permanent magnet vacuum circuit breaker;
the frame is provided with a lock plate, the lock plate comprises a lock plate rotating shaft perforation, a lock plate rotating shaft is arranged in the lock plate rotating shaft perforation in a penetrating mode, the lock plate can rotate around the lock plate rotating shaft within a certain angle range, the front end of the lock plate is provided with a locking head, a torsion spring is sleeved on the lock plate rotating shaft, and the torsion spring can enable the lock plate to bounce upwards.
Preferably, the stop pin sliding limiting block is fixedly arranged at the top end of the bracket, the locking stop pin is arranged in the sliding groove and is in sliding connection with the sliding groove, a retaining wall is arranged at the rear end of the sliding groove, the spring is in abutting connection with the retaining wall, and the pull wire is respectively connected to the locking stop pin and the opening and closing sliding block of the permanent magnet vacuum circuit breaker.
Preferably, when the permanent magnet vacuum circuit breaker is switched off, the locking stop pin is pulled by the pull wire and then is retracted into the sliding groove, the locking plate can be lifted, the electric chassis vehicle can execute in-out operation, when the permanent magnet vacuum circuit breaker is switched on, the locking stop pin is pushed by the spring to extend out of the sliding groove, the locking stop pin is in butt joint with the interlocking head, the locking plate is not lifted, and the electric chassis vehicle cannot execute in-out operation.
Preferably, the installation bent plate is arranged at one end of the three-layer sleeve rotating shaft, an emergency brake separating operation shaft, a hollow sleeve and an outer sleeve are sequentially arranged on the three-layer sleeve rotating shaft in a sliding manner along the axial direction from inside to outside, the emergency brake separating operation shaft and the installation bent plate form a pin connection relationship, and one end of the outer sleeve, which is far away from the installation bent plate, is fixedly connected with an emergency brake separating rod of the permanent magnet vacuum circuit breaker.
Preferably, a first limiting pin is arranged at one end of the emergency brake separating operation shaft, a horizontal first guide groove is formed in the side wall of the hollow sleeve, a second limiting pin is arranged at one end, far away from the installation bent plate, of the hollow sleeve, a second guide groove is formed in the top end of the outer sleeve, the first limiting pin slides along the first guide groove and is limited, and the second limiting pin slides along the second guide groove and is limited.
Preferably, a locking electromagnet is further arranged at the top end of the support, an electromagnet locking baffle is arranged at the front end of the locking plate, when the locking electromagnet is not attracted, the electromagnet locking baffle prevents the locking plate from being lifted, and the electric chassis vehicle does not execute in-out operation.
Due to the application of the technical scheme, compared with the prior art, the invention has the following advantages:
1. after an opening and closing sliding block in the I SM permanent magnet vacuum circuit breaker is connected with a mechanical locking mechanism of an electric chassis vehicle through a stay wire, when the circuit breaker is in an opening state, the mechanical locking mechanism of the electric chassis vehicle is in an unoccluded state, and can execute electric vehicle entering and exiting operation, and when the circuit breaker is in a closing state, the mechanical locking mechanism of the electric chassis vehicle is in a locked state, and cannot execute electric vehicle entering and exiting operation, so that the mechanical locking of the I SM permanent magnet vacuum circuit breaker and the electric chassis vehicle is realized.
2. When the electric chassis is positioned at the working position, the three layers of the three-layer sleeve rotating shaft are mutually pulled apart, and when the electric chassis is positioned at the test position, the three layers of the three-layer sleeve rotating shaft are mutually retracted, so that the emergency brake separating operation can be completed no matter the electric chassis is positioned at the working position or the test position.
3. When the locking electromagnet is not attracted, the electromagnet locking baffle prevents the locking head from moving, so that the locking plate is prevented from lifting, the electric chassis vehicle cannot execute in-out operation, and the electric locking of the ISM permanent magnet vacuum circuit breaker and the electric chassis vehicle is realized.
Drawings
FIG. 1 is a schematic diagram of an embodiment of an electric chassis of the present invention;
FIG. 2 is a schematic view of the structure of FIG. 1 with the latching electromagnet, the baffle, the transmission mechanism, and the emergency brake release mechanism removed;
FIG. 3 is a schematic view of the lock plate of FIG. 2 after being sprung;
FIG. 4 is a schematic view of the installation of a mechanical locking mechanism in an embodiment of the electric chassis of the present invention;
FIG. 5 is a schematic view of the internal structure of the mechanical locking mechanism in an embodiment of the electric chassis of the present invention;
fig. 6 is a schematic view of an emergency brake release mechanism in an embodiment of the electric chassis of the present invention.
Detailed Description
The invention will be described in further detail with reference to the accompanying drawings and specific examples.
In the description of the present invention, it should be understood that the terms "upper," "lower," "front," "rear," "left," "right," "top," "bottom," "inner," "outer," and the like indicate or are based on the orientation or positional relationship shown in the drawings, merely to facilitate description of the present invention and to simplify the description, and do not indicate or imply that the devices or elements referred to must have a specific orientation, be configured and operated in a specific orientation, and thus should not be construed as limiting the present invention.
In fig. 1 to 5, an electric chassis comprises a frame 2, a positioning mechanism 1, a motor 10, a transmission mechanism 12, a nut gear 13, a screw rod 3, a bracket 11, a mechanical locking mechanism 7 and an emergency brake release mechanism 5. The motor 10 is fixedly arranged on the frame 2, the screw gear 13 is arranged on the frame 2 through a screw fixing seat, and the motor 10 can drive the screw gear 13 to rotate through the transmission mechanism 12. The front end of the screw rod 3 and the central hole of the positioning mechanism 1 form a pin connection relationship. The frame 2 is connected with the positioning mechanism 1 through the screw gear 13 and the screw groove of the screw rod 3 in a matched mode. The rear end of the screw rod 3 is provided with a locking limiting block 4, a pin connection relation is formed between the screw rod 3 and the screw rod, and when the screw rod 3 and the screw nut gear 13 relatively rotate, the screw rod 3 drives the locking limiting block 4 to move forwards or backwards.
In this embodiment, a lock plate 6 is disposed on the frame 2, the lock plate 6 can rotate around a lock plate shaft for fixing the lock plate 6 within a certain angle range, and a torsion spring 14 is sleeved on the lock plate shaft to make the lock plate 6 spring upwards. One end of the lock plate 6 is provided with a interlocking head 6-3, and one side of the lock plate 6 in the length direction is provided with a first locking convex part 6-1 and a second locking convex part 6-2 in sequence. The bracket 11 is fixedly arranged on the frame 2, and the stop pin sliding limiting block 7-2 is fixedly arranged at the top end of the bracket 11. The top end of the bracket 11 can be further provided with a locking electromagnet 8, the front end of the locking plate 6 is provided with an electromagnet locking baffle 9, and when the locking electromagnet 8 is not attracted, the electromagnet locking baffle 9 prevents the locking plate 6 from lifting, and the electric chassis vehicle does not execute in-out operation.
In this embodiment, when the permanent magnet vacuum circuit breaker is opened, the opening and closing slider in the permanent magnet vacuum circuit breaker is at a back position, the locking stop pin 7-1 connected with the opening and closing slider is retracted into the stop pin sliding stop block 7-2 through the pull wire 7-3, if the electric chassis car leaves the working position or the test position, the left plate 15 connected to the positioning mechanism 1 moves backwards or forwards relative to the locking plate 6, the front widened part or the back widened part of the left plate 15, which is propped against the bottom protruded part of the locking plate 6, leaves the bottom protruded part of the locking plate 6, the locking plate 6 is lifted under the action of the torsion spring 14, at this time, the second locking protruded part 6-2 or the first locking protruded part 6-1 on the locking plate 6 is lifted along with the locking plate 6, the locking stop block 4 connected on the screw rod 3 through the pin can pass under the second locking protruded part 6-2 or the first locking protruded part 6-1 on the locking plate 6, and the electric chassis car can execute the in-out operation; when the permanent magnet vacuum circuit breaker is in a closing state, an opening and closing sliding block in the permanent magnet vacuum circuit breaker is in a front position, a locking stop pin 7-1 connected with the opening and closing sliding block through a pull wire 7-3 stretches out to the front of a sliding groove 7-2-1 of a stop pin sliding limiting block 7-2 under the action of a spring 7-4, at the moment, the locking stop pin 7-1 blocks the interlocking head 6-3 part of a locking plate 6, the locking plate 6 cannot be lifted, at the moment, the locking limiting block 4 connected with a screw rod 3 through a pin is blocked by a second locking protruding part 6-2 or a first locking protruding part 6-1 on the locking plate 6 and cannot move, and an electric chassis vehicle cannot execute an in-out operation.
In this embodiment, the mechanical locking mechanism 7 includes a locking stop pin 7-1, a stop pin sliding stopper 7-2, a spring 7-4 and a pull wire 7-3. The top end of the stop pin sliding limiting block 7-2 is provided with a sliding groove 7-2-1, the locking stop pin 7-1 is in sliding connection with the stop pin sliding limiting block 7-2, and the middle of the locking stop pin is in abutting connection with a spring 7-4. The top end of the locking stop pin 7-1 is provided with a bolt component 7-1-1 in a penetrating way, and the bolt component 7-1-1 is provided with a pull wire 7-3 in a penetrating way. A sliding groove is arranged at one side of the stop pin sliding limiting block 7-2, two screws are connected to one side of the locking stop pin 7-1, the locking stop pin 7-1 slides back and forth in the sliding groove 7-2-1, and the screws are abutted with the sliding groove.
In this embodiment, the locking pin 7-1 is installed in the sliding groove 7-2-1, and the locking pin 7-1 is slidingly connected with the sliding groove 7-2-1. One end of the sliding groove 7-2-1 is provided with a retaining wall 7-2-2, the spring 7-4 is abutted against the retaining wall 7-2-2, and the pull wire 7-3 is respectively connected to the locking retaining pin 7-1 and the opening and closing sliding block of the permanent magnet vacuum circuit breaker.
In this embodiment, in fig. 6, the emergency brake release mechanism 5 includes a mounting bending plate 5-1 and a three-layer sleeve shaft, wherein the three layers of the three-layer sleeve shaft can slide in an axial direction in a telescopic manner but cannot rotate in the axial direction. The installation bent plate 5-1 is fixedly arranged above the positioning mechanism 1, one end of the three-layer sleeve rotating shaft is connected with the installation bent plate 5-1, and the other end of the three-layer sleeve rotating shaft is connected with an emergency brake separating rod of the permanent magnet vacuum circuit breaker. The three-layer sleeve rotating shaft is sequentially provided with an emergency brake separating operation shaft 5-2, a hollow sleeve 5-3 and an outer sleeve 5-4 in a sliding manner along the axial direction from inside to outside, and three layers of the three-layer sleeve rotating shaft can stretch and slide along the axial direction but cannot rotate along the axial direction. The emergency brake-separating operation shaft 5-2 is connected with the mounting bent plate 5-1 by pins. The emergency brake-separating operation shaft 5-2 is provided with a square head 5-2-2 at one end far away from the hollow sleeve 5-3. One end of the outer sleeve 5-4 far away from the installation bent plate 5-1 is connected with an emergency brake separating rod of the permanent magnet vacuum circuit breaker through screws.
In this embodiment, a first limiting pin 5-2-1 is disposed at one end of the emergency brake-off operating shaft 5-2. The side wall of the hollow sleeve 5-3 is provided with a horizontal first guide groove 5-3-1. The end of the hollow sleeve 5-3 far away from the mounting bent plate 5-1 is provided with a second limiting pin 5-3-2. The first limiting pin 5-2-1 slides along the first guiding groove 5-3-1 and limits. The top of the outer sleeve 5-4 is provided with a second guide groove 5-4-1, and the second limiting pin 5-3-2 slides along the second guide groove 5-4-1 and limits the position.
When the screw rod 3 and the screw nut gear 13 relatively rotate, the screw rod 3 drives the locking limiting block 4 to move forwards or backwards. The pull wire 7-3 is pulled, the locking catch pin 7-1 compresses the spring 7-4 and slides into the sliding groove 7-2-1, the locking plate 6 is lifted up by the first locking convex part 6-1 and the second locking convex part 6-2 under the action of the torsion spring 14, the locking limit block 4 can pass under the first locking convex part 6-1 or the second locking convex part 6-2, at the moment, electric vehicle entering and exiting operation can be executed, the locking catch pin 7-1 slides out of the sliding groove 7-2-1, the locking catch pin 7-1 is abutted with the interlocking head 6-3, the first locking convex part 6-1 and the second locking convex part 6-2 of the locking plate 6 are not lifted up, the first locking convex part 6-1 or the second locking convex part 6-2 is blocked with the locking limit block 4, and at the moment, electric vehicle entering and exiting operation is not executed.
The foregoing is merely a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All technical schemes formed by equivalent transformation or equivalent substitution fall within the protection scope of the invention.
Claims (4)
1. The electric chassis truck comprises a frame, a positioning mechanism, a motor, a transmission mechanism, a screw gear, a screw rod and a bracket, wherein the bracket is fixedly connected to the frame, the motor is connected with the screw gear through the transmission mechanism, and the screw gear is connected with the screw rod through a thread groove;
the mechanical locking mechanism comprises a locking stop pin, a stop pin sliding limiting block, a spring and a stay wire, wherein a sliding groove is formed in the top end of the stop pin sliding limiting block, the locking stop pin is in sliding connection with the stop pin sliding limiting block, the spring is in abutting connection with the middle of the locking stop pin, and the stay wire is arranged at the top end of the locking stop pin;
the emergency brake separating mechanism comprises a mounting bent plate and a three-layer sleeve rotating shaft, the mounting bent plate is fixedly arranged above the positioning mechanism, one end of the three-layer sleeve rotating shaft is connected with the mounting bent plate, and the other end of the three-layer sleeve rotating shaft is connected to an emergency brake separating rod of the permanent magnet vacuum circuit breaker;
the frame is provided with a lock plate, the lock plate comprises a lock plate rotating shaft perforation, a lock plate rotating shaft is arranged in the lock plate rotating shaft perforation in a penetrating manner, the lock plate can rotate around the lock plate rotating shaft within a certain angle range, the front end of the lock plate is provided with a linkage head, the lock plate rotating shaft is sleeved with a torsion spring, and the torsion spring can enable the lock plate to spring upwards;
the installation bending plate is arranged at one end of the three-layer sleeve rotating shaft, an emergency brake separating operation shaft, a hollow sleeve and an outer sleeve are sequentially arranged on the three-layer sleeve rotating shaft in a sliding manner along the axial direction from inside to outside, the emergency brake separating operation shaft and the installation bending plate form a pin connection relationship, and one end of the outer sleeve, which is far away from the installation bending plate, is fixedly connected with an emergency brake separating rod of the permanent magnet vacuum circuit breaker;
a first limiting pin is arranged at one end of the emergency brake-separating operation shaft, a horizontal first guide groove is arranged on the side wall of the hollow sleeve, a second limiting pin is arranged at one end, far away from the installation bent plate, of the hollow sleeve, a second guide groove is arranged at the top end of the outer sleeve, the first limiting pin slides along the first guide groove and limits, and the second limiting pin slides along the second guide groove and limits;
a locking electromagnet is further arranged at the top end of the support.
2. The electric chassis of claim 1, wherein the stop pin sliding limiting block is fixedly installed at the top end of the bracket, the locking stop pin is installed in the sliding groove and is in sliding connection with the sliding groove, a retaining wall is arranged at the rear end of the sliding groove, the spring is in abutting connection with the retaining wall, and the pull wire is respectively connected to the locking stop pin and the opening and closing slide block of the permanent magnet vacuum circuit breaker.
3. The electric chassis of claim 2, wherein when the permanent magnet vacuum circuit breaker is switched off, the locking catch is retracted into the sliding groove after being pulled by the pull wire, the locking plate can be lifted, the electric chassis can perform an in-out operation, when the permanent magnet vacuum circuit breaker is switched on, the locking catch is pushed by the spring to extend out of the sliding groove, the locking catch is abutted with the interlocking head, the locking plate is not lifted, and the electric chassis cannot perform the in-out operation.
4. A motor-driven chassis according to any one of claims 1 to 3, wherein an electromagnet blocking baffle is provided at the front end of the lock plate, and when the blocking electromagnet is not attracted, the electromagnet blocking baffle prevents the lock plate from being lifted, and the motor-driven chassis does not perform an in-out operation.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110127374.XA CN112993839B (en) | 2021-01-29 | 2021-01-29 | Electric chassis truck |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202110127374.XA CN112993839B (en) | 2021-01-29 | 2021-01-29 | Electric chassis truck |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112993839A CN112993839A (en) | 2021-06-18 |
| CN112993839B true CN112993839B (en) | 2023-05-23 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202110127374.XA Active CN112993839B (en) | 2021-01-29 | 2021-01-29 | Electric chassis truck |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112993839B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114050496B (en) * | 2021-11-24 | 2023-09-22 | 国网山东省电力公司莒南县供电公司 | Locking device for circuit breaker handcart position |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202340086U (en) * | 2011-11-30 | 2012-07-18 | 上海通用电气开关有限公司 | Chassis vehicle device with door-closing operation function and emergency opening function |
| CN104037010A (en) * | 2014-05-27 | 2014-09-10 | 安徽明远电力设备制造有限公司 | Mechanical emergency tripping device and tripping method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN2610477Y (en) * | 2003-03-20 | 2004-04-07 | 常州森源开关有限公司 | Vacuum circuit breaker |
| CN201750081U (en) * | 2010-08-06 | 2011-02-16 | 常熟开关制造有限公司(原常熟开关厂） | Chassis interlocking device of handcart type circuit breaker |
| KR101470048B1 (en) * | 2010-11-01 | 2014-12-05 | 현대중공업 주식회사 | Drawing mecanism with double interlock function for a vacuum circuit breaker |
| CN202333563U (en) * | 2011-11-18 | 2012-07-11 | 厦门威尔圣电气实业有限公司 | Electric chassis truck for driving vacuum circuit breaker to move |
| CN103280727B (en) * | 2013-06-14 | 2015-11-18 | 苏州达宏电子科技有限公司 | A kind of electric chassis truck |
| CN203632060U (en) * | 2013-12-18 | 2014-06-04 | 青岛特锐德电气股份有限公司 | Chassis vehicle for handcart type breaker and handcart type breaker |
| CN206180460U (en) * | 2016-08-31 | 2017-05-17 | 裕丰电气有限公司 | Electric chassis vehicle |
| CN209184070U (en) * | 2018-11-27 | 2019-07-30 | 辽宁当凯电力有限公司 | Central-positioned high-voltage switch cabinet prevents on-load from pushing and pulling scale car device |
-
2021
- 2021-01-29 CN CN202110127374.XA patent/CN112993839B/en active Active
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN202340086U (en) * | 2011-11-30 | 2012-07-18 | 上海通用电气开关有限公司 | Chassis vehicle device with door-closing operation function and emergency opening function |
| CN104037010A (en) * | 2014-05-27 | 2014-09-10 | 安徽明远电力设备制造有限公司 | Mechanical emergency tripping device and tripping method thereof |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112993839A (en) | 2021-06-18 |
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