CN201063424Y - Earth handcart - Google Patents
Earth handcart Download PDFInfo
- Publication number
- CN201063424Y CN201063424Y CNU2007201279351U CN200720127935U CN201063424Y CN 201063424 Y CN201063424 Y CN 201063424Y CN U2007201279351 U CNU2007201279351 U CN U2007201279351U CN 200720127935 U CN200720127935 U CN 200720127935U CN 201063424 Y CN201063424 Y CN 201063424Y
- Authority
- CN
- China
- Prior art keywords
- ground connection
- panel
- handcart
- earthed switch
- fixed
- Prior art date
- 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.)
- Expired - Lifetime
Links
Images
Landscapes
- Switch Cases, Indication, And Locking (AREA)
Abstract
The utility model relates to a handcart device used in an electrical switch cabinet, in particular to an earthed handcart which comprises a base and a faceplate and an insulated support which are respectively fixed on the base, wherein, the faceplate is fixed with an earthed switch; the insulated support is fixed with a touch arm; moreover, the faceplate is also fixed with an electricity testing device; an electrical interlock or/and a mechanical interlock is/are arranged between the electricity testing device and the earthed switch. When the earthed handcart is in the working position inside the switch cabinet, whether a busbar is charged can be directly detected through the electricity testing device; when the busbar is charged, a signal is output to lock the operating mechanism of the earthed switch; therefore, the earthed switch is incapable of switching in to prevent the earthed switch from being charged. Because the electricity testing device is directly installed to detect whether the busbar is charged, the prior operation of electricity testing by special equipment before earthing is omitted, thereby greatly improving operation safety; meanwhile, effective earthing of a system is realized by means of the characteristic that the earthed switch can cut off a short circuit current.
Description
Technical field
The utility model relates to a kind of electric switch cart device cashier's office in a shop that is applied to, particularly a kind of ground connection handcart.
Technical background
In existing electrical system, the ground connection of primary side main bus bar is mainly taked the mode of hanging earthing conductor or earthed switch is installed on main bus bar.But because the restriction of structure space in the switch cubicle, the direct mode of hanging earthing conductor ground connection on main bus bar, not easy to operate, simultaneously because of can't realizing interlocking between mains switch and the earthed switch, and there is security risk; Adopt busbar grounding switch ground connection,,, also just can't use earthed switch to be grounded because the restriction of switch cubicle structure can't be installed the busbar grounding switch in some switch cubicle though realize the locking between mains switch and ground connection easily.
Therefore relatively more conventional at present occupation mode is to utilize the ground connection handcart that main bus bar is carried out ground connection.When the ground connection handcart carries out ground connection to main bus bar, normally earlier special-purpose electrical verification handcart is pushed in the switch cubicle, after guaranteeing the ground connection car and pre-ground connection side bus effectively contacting, utilize the ground connection handcart to add hanging earthing conductor and be grounded operation.The electrical verification process mainly is to open switch cubicle bus bar side static contact baffles (valve) with electrical verification car (valve driving car), uses electroscope electrical verification on fixed contact then.At this moment, owing to may charged fixed contact be the place ahead that exposes the operator, difficult while ground connection car ground connection is hanging earthing conductor in addition to ensure the personal safety of operating personnel in the electrical verification process, brings storage how inconvenient also can for on-the-spot ground connection operation.
The utility model content
The utility model provides a kind of simple to operation, safe ground connection handcart in order to address the above problem.
The technical scheme in the invention for solving the technical problem is: a kind of ground connection handcart, comprise base and the panel, the insulating support that are separately fixed on the base, be fixedly connected with earthed switch on the described panel, be fixed with contact arm on the described insulating support, also be fixed with electroscopic device on the described panel, be provided with the lock that is electrically connected between described electroscopic device and the earthed switch or/and mechanical chain.
The output of described electroscopic device can be connected with an electrification display, and the output of described electrification display control latching electromagnet, described latching electromagnet stop by interlocking gear or allow operation to described earthed switch.
Described interlocking gear can comprise latching cam, Breech block and junction panel, described Breech block 7 is fixed on the described junction panel, can move up and down with junction panel, described junction panel top roof pressure one with the fixing stage clip of panel on, the iron core of described latching electromagnet is connected to the bottom of described junction panel, described earthed switch comprises operating grip, and the installation site of described operating grip is connected with described latching cam.
The bottom of described junction panel can be connected with locking plate by link rod, and described base is connected with leading screw, and described locking plate is arranged on the leading screw.
Described electroscopic device can be the capacitance partial pressure device.
Can be provided with a transparent observation window on the described panel, described observation window blocks the place ahead at described earthed switch.
Contact, two positions can be set on the movement locus of ground connection handcart, be respectively test position contact and contact, service position.
When the utility model is in the service position when the ground connection handcart in switch cubicle, whether can directly detect bus by electroscopic device charged, when in case bus is charged, the operating mechanism of earthed switch is lived in locking with regard to output signal, earthed switch can't be closed a floodgate, prevent charged splice grafting ground switch, because electroscopic device directly has been installed, whether charged in order to detect bus, saved the preceding operation that needs with the special equipment electrical verification of original ground connection, improve the fail safe of operation greatly, utilized earthed switch to have simultaneously and close the characteristic of closing the short circuit current ability, realized the effective grounding of system.
Description of drawings
Fig. 1 is a structural representation of the present utility model;
Fig. 2 is the structural representation of mechanical chain part among Fig. 1.
Embodiment
As shown in Figure 1, 2, the utility model comprises chassis 14 and the panel 4, the insulating support 2 that are fixed on the chassis 14, be equipped with on the described insulating support 2 and be used for the contact arm 1 that is connected with system busbar, the bottom on described chassis 14 is provided with leading screw 15, be used for cooperating with the cabinet of switch cubicle, by rotational lead screw 15, drive chassis 14 and push or pull out switch cubicle.Be fixed with a capacitance partial pressure device 3 on the described panel 4, the below of described capacitance partial pressure device 3 is provided with an earthed switch, and described earthed switch also is fixed on the described panel 4.Described panel is provided with a transparent observation window, and described observation window 18 blocks the place ahead at described earthed switch, also illuminating lamp can be installed in the handcart, and by described observation window 18, situation is closed in the pass of being convenient in time to grasp the ground connection cutter.Described earthed switch comprises and is used for realizing the ground connection cutter 16 that contacts, ground connection cutter operating mechanism 17 and the operating grip 10 that is used to control the motion of ground connection cutter with bus, described operating grip 10 is for flexibly connecting, only in the operational grounding cutter, just insert installation, other the time can extract, when fitting operation handle 10, observation window 18 can be extractd or moved on on one side, perhaps direct the setting has the jack that inserts operating grip 10 on described observation window 18, makes between observation window 18 and operating grip 10 structures not clash.The junction of described operating grip and operating structure is provided with a latching cam 9, a Breech block 7 is fixed on the described junction panel 6, can move up and down with junction panel 6, described junction panel 6 top roof pressures one with the fixing stage clip 5 of panel 4 on, also be fixed with a lockweight 8 on the described junction panel 6, the bottom of described junction panel also is connected with a link rod 11, the bottom of described link rod 11 is connected with a reverse depression bar 12, and described reverse depression bar 12 is connected with a locking plate 13 that is arranged on the leading screw 15.An earthed switch latching electromagnet 18, with the earthed switch that is installed on the ground connection handcart, iron core stretches out and blocks described junction panel 6 when dead electricity, stops described junction panel 6 to move up, withdrawal unshakable in one's determination when electric, described junction panel 6 can freely move up and down.
Described ground connection handcart has two specific critical localisations in pushing the process of switch cubicle, be test position and service position, two positions contact BT1 and BT2 are set on the movement locus of ground connection handcart, on the ground connection handcart places the guide rail of switch cubicle, when not pushing switch cubicle, the ground connection handcart is in test position, at this moment contact, the position BT2 closure of ground connection handcart; When the ground connection handcart is whole push switch cubicle after, the ground connection handcart is in the service position, this moment the ground connection handcart contact, position BT1 closure.
Below in conjunction with said structure, the course of work of the present utility model is described, at first by rotary screw rod 15, make handcart chassis 14 drive whole vehicle body and move forward when pushing switch cubicle, control a ground connection car operation and allow indicator light (not indicating among the figure) to light, whether operating personnel can light by this lamp, judge whether the ground connection car can be operated, this moment, the latching electromagnet (not indicating among the figure) of test position got electric excitation, removed the handcart locking, allowed the operational grounding handcart.
Then, operating personnel further shake the ground connection handcart into the service position to switch cubicle, band point situation with capacitance partial pressure device 3 detection primary sides, control latching electromagnet 18 dead electricity of described service position if primary side is charged, iron core stretches out, block described junction panel 6, the operation of locking earthed switch prevents charged splice grafting ground switch; If system's primary side is not charged, the latching electromagnet 18 of described earthed switch service position gets electric excitation, removes the locking to described junction panel 6, allows the operational grounding switch.
Next, insert ground connection cutter operating grip 10, ground connection cutter operating grip 10 directly is connected with ground connection cutter operating mechanism 17 after wearing connection latching cam 9 at this moment, by on carry lockweight 8, drive on the junction panel 6 and move, Breech block 7 was followed and was moved on to latching cam 9 tops on the junction panel 6 this moment, made ground connection cutter operation release, even ground connection cutter operating grip 10 can rotate.Clockwise rotate ground connection cutter operating grip 10 ground connection cutter 16 is closed a floodgate, earthed switch is finished the ground connection operation.Latching cam 9 has been followed ground connection cutter operating grip and has been rotated 90 ° at this moment, and Breech block 7 is withstood by latching cam 9, thereby makes junction panel 6 not move down under the effect of stage clip 5.And this moment, junction panel 6 was upwards held reverse depression bar 12 by link rod 11, pushes down screw mandrel locking plate 13 by reverse depression bar 12 again, thereby screw mandrel 15 can not be rotated, and locked ground connection handcart position with this.Thereby guarantee when earthed switch is in "on" position, locking ground connection handcart position, can't shake handcart this moment, just can shake the ground connection handcart after having only the earthed switch separating brake, so guarantee the reliability of busbar grounding.
In addition, contact arm 1 installation site of described ground connection handcart can be adjusted up and down, and when contact arm 1 was installed in the top of handcart insulating support, the ground connection handcart can be realized the busbar grounding function; When contact arm is installed in the bottom of handcart insulating support, can realize the line-to-ground function.
Control circuit relevant with said structure or chain circuit are that those of ordinary skills can finish according to the function that will realize, therefore do not do too much description here.
More than ground connection handcart provided by the utility model is described in detail, used specific case herein principle of the present utility model and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present utility model and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present utility model, the part that all can change in specific embodiments and applications, in sum, this description should not be construed as restriction of the present utility model.
Claims (7)
1. ground connection handcart, it is characterized in that: comprise base and the panel, the insulating support that are separately fixed on the base, be fixedly connected with earthed switch on the described panel, be fixed with contact arm on the described insulating support, also be fixed with electroscopic device on the described panel, be provided with the lock that is electrically connected between described electroscopic device and the earthed switch or/and mechanical chain.
2. ground connection handcart according to claim 1, it is characterized in that: the output of described electroscopic device is connected with an electrification display, the output of described electrification display control latching electromagnet, described latching electromagnet stop by interlocking gear or allow operation to described earthed switch.
3. ground connection handcart according to claim 2, it is characterized in that: described interlocking gear comprises latching cam, Breech block and junction panel, described Breech block is fixed on the described junction panel, can move up and down with junction panel, described junction panel top roof pressure one with the fixing stage clip of panel on, the iron core of described latching electromagnet is connected to the bottom of described junction panel, and described earthed switch comprises operating grip, and the installation site of described operating grip is connected with described latching cam.
4. ground connection handcart according to claim 3 is characterized in that: the bottom of described junction panel is connected with locking plate by link rod, and described base is connected with leading screw, and described locking plate is arranged on the leading screw.
5. according to each described ground connection handcart in the claim 1～4, it is characterized in that: described electroscopic device is the capacitance partial pressure device.
6. according to each described ground connection handcart in the claim 1～4, it is characterized in that: described panel is provided with a transparent observation window, and described observation window blocks the place ahead at described earthed switch.
7. according to each described ground connection handcart in the claim 1～4, it is characterized in that: contact, two positions is set on the movement locus of ground connection handcart, is respectively test position contact and contact, service position.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201279351U CN201063424Y (en) | 2007-07-31 | 2007-07-31 | Earth handcart |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2007201279351U CN201063424Y (en) | 2007-07-31 | 2007-07-31 | Earth handcart |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN201063424Y true CN201063424Y (en) | 2008-05-21 |
Family
ID=39451811
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2007201279351U Expired - Lifetime CN201063424Y (en) | 2007-07-31 | 2007-07-31 | Earth handcart |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN201063424Y (en) |
Cited By (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104332866A (en) * | 2014-07-29 | 2015-02-04 | 上海宝临电气集团有限公司 | Electricity-detecting/ phase-checking double-purpose handcart |
| CN105140695A (en) * | 2015-09-17 | 2015-12-09 | 内蒙古包钢钢联股份有限公司 | Grounding vehicle for centrally-installed switchgear |
| CN105322457A (en) * | 2015-10-15 | 2016-02-10 | 胜利油田恒源电气有限责任公司 | Multifunctional examining and repairing vehicle for mid-set type switch cabinet |
| CN105576544A (en) * | 2014-07-18 | 2016-05-11 | 国家电网公司 | Electrical-inspection earthing and earthing switch electric opening control method of electrical-inspection earthing trolley |
| CN107153134A (en) * | 2017-06-15 | 2017-09-12 | 国网山东省电力公司枣庄供电公司 | Electrical verification earth handcart and method of work |
| CN107394552A (en) * | 2017-09-01 | 2017-11-24 | 贵州电网有限责任公司 | The installation of switch-cabinet grounding line, remove device and operating method |
| CN109346965A (en) * | 2018-10-30 | 2019-02-15 | 国网山东省电力公司潍坊供电公司 | A kind of high-tension switch cabinet bus grounding device |
| CN111952876A (en) * | 2020-07-27 | 2020-11-17 | 国网福建省电力有限公司三明供电公司 | Electricity testing and grounding function integrated handcart device |
-
2007
- 2007-07-31 CN CNU2007201279351U patent/CN201063424Y/en not_active Expired - Lifetime
Cited By (11)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105576544A (en) * | 2014-07-18 | 2016-05-11 | 国家电网公司 | Electrical-inspection earthing and earthing switch electric opening control method of electrical-inspection earthing trolley |
| CN104332866A (en) * | 2014-07-29 | 2015-02-04 | 上海宝临电气集团有限公司 | Electricity-detecting/ phase-checking double-purpose handcart |
| CN104332866B (en) * | 2014-07-29 | 2017-02-15 | 上海宝临电气集团有限公司 | Electricity-detecting/ phase-checking double-purpose handcart |
| CN105140695A (en) * | 2015-09-17 | 2015-12-09 | 内蒙古包钢钢联股份有限公司 | Grounding vehicle for centrally-installed switchgear |
| CN105322457A (en) * | 2015-10-15 | 2016-02-10 | 胜利油田恒源电气有限责任公司 | Multifunctional examining and repairing vehicle for mid-set type switch cabinet |
| CN105322457B (en) * | 2015-10-15 | 2017-07-14 | 胜利油田恒源电气有限责任公司 | Intermediate switchgear cabinet Multifunctional repair |
| CN107153134A (en) * | 2017-06-15 | 2017-09-12 | 国网山东省电力公司枣庄供电公司 | Electrical verification earth handcart and method of work |
| CN107394552A (en) * | 2017-09-01 | 2017-11-24 | 贵州电网有限责任公司 | The installation of switch-cabinet grounding line, remove device and operating method |
| CN107394552B (en) * | 2017-09-01 | 2023-09-26 | 贵州电网有限责任公司 | Switch cabinet grounding wire mounting and dismounting device and operation method |
| CN109346965A (en) * | 2018-10-30 | 2019-02-15 | 国网山东省电力公司潍坊供电公司 | A kind of high-tension switch cabinet bus grounding device |
| CN111952876A (en) * | 2020-07-27 | 2020-11-17 | 国网福建省电力有限公司三明供电公司 | Electricity testing and grounding function integrated handcart device |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN201063424Y (en) | Earth handcart | |
| CN103441439B (en) | A kind of switch cubicle that isolating switch, vacuum circuit-breaker and earthed switch are housed | |
| CN1295832C (en) | Draw out arrangement for molded case circuit breakers | |
| CN103904578A (en) | Integrated handcart with phase testing function and bus grounding function for high-voltage switch cabinet | |
| CN203434502U (en) | A switch cabinet provided with isolating switches, vacuum circuit breakers, and grounding switches | |
| CN201887352U (en) | Grounding trolley for maintenance of high-voltage switch cabinet | |
| CN202258889U (en) | Mechanical interlocking device of dual-power inflation cabinet | |
| CN201601411U (en) | Central cabinet major loop ground handcart | |
| CN102279351B (en) | For performing device and the electric combination switchgear of the measurement of cable | |
| CN102270813A (en) | Electricity testing and earthing handcart for main bus and feeder branch | |
| KR101883574B1 (en) | Position detector for vacuum circuit breaker | |
| CN201805169U (en) | Hand cart for electricity test and grounding of leading-in wire on switch cabinet | |
| WO2021109833A1 (en) | Portable automatic phase sequence detection device | |
| CN211627693U (en) | Portable automatic phase sequence detection device | |
| CN2826775Y (en) | Intelligent armoured moving type dual generatrix AC metal closed switch cabinet | |
| CN107293982A (en) | Longitudinal withdraw-type breaker middle-placed switch cabinet | |
| CN203787835U (en) | One-piece handcart used for phasing and bus grounding of high tension switchgear | |
| CN217362247U (en) | High tension switchgear intelligent control device with activity panel | |
| CN201886951U (en) | Grounding switch and rear door interlocking device for high-voltage switch cabinet | |
| CN202276076U (en) | Middle-arranged safety protection device of high voltage switch cabinet | |
| CN202260217U (en) | Movable high-voltage switch cabinet powered by double power supplies | |
| CN201369510Y (en) | Switch cabinet valve detection trolley | |
| CN2838016Y (en) | Locking device against reverse misoperation of power transformation | |
| CN216903887U (en) | Intelligent high-voltage switch cabinet door detection device | |
| CN203553703U (en) | Armoured movably type metal-enclosed switchgear |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CX01 | Expiry of patent term |
Granted publication date: 20080521 |
|
| CX01 | Expiry of patent term |