CN103391698B - A kind of cover plate protector - Google Patents
A kind of cover plate protector Download PDFInfo
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- CN103391698B CN103391698B CN201210147572.3A CN201210147572A CN103391698B CN 103391698 B CN103391698 B CN 103391698B CN 201210147572 A CN201210147572 A CN 201210147572A CN 103391698 B CN103391698 B CN 103391698B
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- bolt
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- cover plate
- snap close
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Abstract
The invention discloses a kind of cover plate protector, it is characterized in that comprising: bolt cover (3), cover on cover plate (1) periphery of the electrical apparatus interstar connection cavity (11) with multiple connecting bolt; Bolt cover fixture, respectively connecting bolt cover (3) and described electrical apparatus interstar connection cavity (11), to be fixed on cover plate (1) periphery by bolt cover (3); Snap close (8), is arranged on bolt cover fixture or bolt cover (3), is used for blocking the fastening bolt (9) of bolt cover fixture, is unscrewed with fastening bolt (9) before preventing snap close (8) mobile; Checkout gear, is arranged on snap close (8), is used for detecting snap close (8) and blocks effect to fastening bolt (9), be connected with supervisory control system (17) and/or audible-visual annunciator (18).Adopt multiple-protection thus achieve uncovering power-off, warnings of uncapping of cover plate (1), the locking and prevent from uncapping without authorization operating function of uncapping, structure is comparatively simply, easy to use.
Description
Technical field
The present invention relates to a kind of cover plate protector, particularly relate to a kind of protector of mineral electrical apparatus wire connection cavity cover plate.
Background technology
" safety regulations in coal mine " the 446th article: " non-full-time personnel or non-electric personnel on duty must not operate electric equipment without authorization "; Article 488: " exploiting field electrician must not open working section sub station electric equipment without authorization and place under repair "; Article 445: down-hole must not hotline maintenance, resettlement electric equipment, cable or wire.The fastening bolt of present underground coal mine electrical equipment connector cover, outside being exposed to, the people of down-hole band spanner and hand vice is more, arbitrarily can open the connector cover of electric equipment, live line working, although there is sound coal mine safety management system, there is the supervision of safety and patrol person, but carrying out of above " code " clause can not be ensured from technical equipment, some employees ignore security regulations, hot line job electrical apparatus interstar connection box violating the regulations, there occurs a lot of electric injures and deaths and gas explosion accident in coal mining enterprise at home and abroad.
Summary of the invention
Object of the present invention is exactly to overcome above-mentioned prior art Problems existing, a kind of cover plate protector is provided, adopt multiple-protection thus the non-dedicated instrument achieving cover plate can not be uncapped without authorization, and leading uncovering power-off, locking of uncapping, alarm function of uncapping, structure is comparatively simple, easy to use.
For realizing above-mentioned purpose of the present invention, provide following technical scheme:
A kind of cover plate protector, comprising: bolt cover, covers on the cover plate periphery of the electrical apparatus interstar connection cavity with multiple connecting bolt; Bolt cover fixture, respectively connecting bolt cover and described electrical apparatus interstar connection cavity, to be fixed on cover plate periphery by bolt cover; Snap close, is arranged on bolt cover fixture or bolt cover, is used for blocking the fastening bolt of bolt cover fixture, moves front fastening bolt be unscrewed to prevent snap close; Checkout gear, is arranged on snap close, is used for detecting snap close and blocks effect to fastening bolt, be connected with supervisory control system and/or audible-visual annunciator.
Preferably, bolt cover fixture comprises: stirrup, has the bar shaped top board being buckled in and being fixedly connected with on described bolt cover and with it, and by the two bar shaped side plates of top board two ends along described electrical apparatus interstar connection cavity to downward-extension; Fixed block, is fixed on the inner side of a side plate; Described fastening bolt, is arranged on another side plate; Wherein, fixed block and described fastening bolt are resisted against on described electrical apparatus interstar connection cavity respectively, described stirrup and described electrical apparatus interstar connection cavity to be fixed, thus described bolt cover are fixed on described cover plate periphery.
Wherein, the end of another side plate is connected with the level board horizontally outward extended, and it is fixed with bolt sleeve, and bolt sleeve is provided with groove; Described snap close to be sleeved on described bolt sleeve and to block described fastening bolt, it has the screw corresponding with described groove; Lock core, its one end is inserted in described groove by screw.
Or, bolt cover fixture comprises: stirrup, there is the bar shaped top board be placed on described cover plate, with by the two bar shaped side plates of top board two ends along described electrical apparatus interstar connection cavity to downward-extension, the end of two bar shaped side plates is fixed with the level board that level extends internally, and described bolt cover is stacked on top board; Described fastening bolt, is connected to be fixed with described top board through described bolt cover; Wherein, described two level boards are resisted against on the bottom surface of described electrical apparatus interstar connection cavity, and the bottom of described fastening bolt is resisted against on the end face of described cover plate, thus described bolt cover is fixed on described cover plate periphery.
Wherein, bolt cover is fixed with bolt sleeve, bolt sleeve is provided with groove; Described snap close is sleeved on described bolt sleeve and described fastening bolt, it has the screw corresponding with described groove; Lock core, its one end is inserted in described groove by screw.
Preferably, checkout gear comprises: be arranged on the action sensor on described snap close, is electrically connected with described supervisory control system and/or audible-visual annunciator; Be arranged on the magnet on described bolt sleeve, contact with action sensor magnetic; When described lock tube departs from described bolt sleeve, described snap close blocks event resolves to described fastening bolt, the circuit that action sensor is electrically connected with described supervisory control system and/or audible-visual annunciator is connected, action sensor connects transmission signal to described supervisory control system and/or audible-visual annunciator, and supervisory control system is cut off power supply and/or audible-visual annunciator in described electrical apparatus interstar connection cavity and sent sound and light alarm.
Or, bolt cover fixture comprises: stirrup, there is the bar shaped top board be placed on described cover plate, with by the two bar shaped side plates of top board two ends along described electrical apparatus interstar connection cavity to downward-extension, the end of two bar shaped side plates is fixed with the level board that level extends internally, described bolt cover is stacked on top board, and bolt cover and top board correspondence position are provided with lower concave part; Described fastening bolt, is placed in lower concave part and is also connected to be fixed with described top board through described bolt cover; Wherein, described two level boards are resisted against on the bottom surface of described electrical apparatus interstar connection cavity, and the bottom of described fastening bolt is resisted against on the end face of described cover plate, thus described bolt cover is fixed on described cover plate periphery.
Wherein, bolt cover is fixed with bolt sleeve, bolt sleeve is provided with groove; Described snap close is sleeved on described bolt sleeve and also hides on described lower concave part, it has the screw corresponding with described groove; Lock core, its one end is inserted in described groove by screw.
Preferably, checkout gear comprises: be arranged on the action sensor on the lock tube of described snap close, is electrically connected with described supervisory control system and/or audible-visual annunciator; With the action sensor actuating strut of described bolt sleeve Mechanical Contact, bolt sleeve does not install magnet; When described lock tube departs from described bolt sleeve, described snap close blocks event resolves to described fastening bolt, the circuit that action sensor is electrically connected with described supervisory control system and/or audible-visual annunciator is connected, action sensor connects transmission signal to described supervisory control system and/or audible-visual annunciator, and supervisory control system is cut off power supply and/or audible-visual annunciator in described electrical apparatus interstar connection cavity and sent sound and light alarm.
Beneficial effect of the present invention embodies in the following areas:
Cover plate protector of the present invention adopts bolt cover to cover multiple connecting bolt, prevents non-dedicated instrument from operating connecting bolt without authorization and being opened by cover plate; Bolt cover fixture is adopted to fix bolt cover, and adopt snap close to prevent opening of the fastening bolt of bolt cover fixture, thus prevent bolt cover to be opened, checkout gear is adopted to detect the effect of snap close, achieve power-off when snap close is opened, locking, warning function, adopt multiple-protection thus achieve the leading uncovering power-off of cover plate, locking, warning function; Structural design is simple, easy to use.
Accompanying drawing explanation
Fig. 1 is the vertical view of one embodiment of the invention cover plate protector;
Fig. 2 is the cutaway view along A-A line in Fig. 1;
Fig. 3 is the vertical view of second embodiment of the invention cover plate protector;
Fig. 4 is the cutaway view along B-B line in Fig. 3;
Fig. 5 is the vertical view of third embodiment of the invention cover plate protector;
Fig. 6 is the cutaway view along C-C line in Fig. 5.
Description of reference numerals: 1-cover plate; 2-connecting bolt; 3-bolt cover; 4-stirrup; 40-top board; 41,42-side plate; 41a, 42a, 44-level board; 43-fixed block; 5-action sensor; 6-magnet; 60-action sensor actuating strut; 7-bolt sleeve; 70-groove; 8-snap close; 80-lock tube; 81-lock core; 9-fastening bolt; 10-adjusting nut; 11-electrical apparatus interstar connection cavity; 17-supervisory control system; 18-audible-visual annunciator.
Embodiment
As shown in Fig. 1-6, cover plate protector of the present invention comprises: bolt cover 3, covers on the cover plate 1 of the electrical apparatus interstar connection cavity 11 with multiple connecting bolt 2; Bolt cover fixture, respectively connecting bolt cover 3 and electrical apparatus interstar connection cavity 11, to be fixed on cover plate 1 periphery by bolt cover 3; Snap close 8, is arranged on bolt cover fixture or bolt cover 3, is used for blocking the fastening bolt 9 of bolt cover fixture, moves front fastening bolt 9 be unscrewed to prevent snap close; Checkout gear, is arranged on snap close 8, is used for detecting snap close and blocks effect to fastening bolt 9, be connected with supervisory control system 17 and/or audible-visual annunciator 18.Cover plate protector of the present invention adopts bolt cover 3 to cover multiple connecting bolt 2, prevents operation connecting bolt 2 and is opened by cover plate 1; Adopt snap close 8 to prevent opening of fastening bolt 9, adopt checkout gear to detect the effect of snap close, adopt multiple-protection thus achieve the leading uncovering power-off of cover plate 1, warning of uncapping, locking of uncapping, preventing from uncapping without authorization operating function.
Embodiment 1
As shown in the vertical view of Fig. 1 the present embodiment cover plate protector, bolt cover 3 covers on the cover plate 1 of the electrical apparatus interstar connection cavity 11 with multiple connecting bolt 2, multiple connecting bolt 2 is all covered bottom it, make to want operation connecting bolt 2 and must first open bolt cover 3.
As Fig. 1 and Fig. 2 along A-A line in Fig. 1 cutaway view shown in, the bolt cover fixture of the present embodiment comprises: stirrup 4, have and be buckled on bolt cover 3 and the bar shaped top board 40 be fixedly connected with it, and by the two bar shaped side plates 41,42 of top board 40 two ends along electrical apparatus interstar connection cavity 11 to downward-extension; Fixed block 43, is fixed on the inner side of a side plate 42; Fastening bolt 9, is arranged on another side plate 41, side plate 41 is provided with through hole, and the bottom of through hole is fixed with adjusting nut 10, and adjusting nut 10 is fixed with side plate 41, and fastening bolt 9 connects adjusting nut 10 through hole.During installation, first select sizeable bolt cover 3 and supporting stirrup 4 according to the overall dimension of electric equipment cover plate 1, then make the top board 40 of stirrup 4 be buckled on bolt cover 3, the top board of stirrup 4 is fixedly connected with bolt cover, afterwards, the bolt cover 3 be fixed as one and stirrup 4 are stretched into along electric equipment loudspeaker nozzle direction to be installed on electrical apparatus interstar connection cavity 11, bolt cover 3 is made to cover on cover plate 1, fastening bolt 9 is screwed into and is fixed in adjusting nut 10 on side plate 41 and screw, until the bottom of fastening bolt 9 contacts with electrical apparatus interstar connection cavity 11, continue to turn fastening bolt 9, the bolt cover 3 be fixed as one and stirrup 4 just can entirety to the right (Fig. 1 shown in) mobile, until the fixed block 43 be positioned on the side plate 42 on the left side is resisted against on electrical apparatus interstar connection cavity 11, now, fixed block 43 and fastening bolt 9 are tightly resisted against the both sides of electrical apparatus interstar connection cavity 11 respectively, thus stirrup 4 is fixed on electrical apparatus interstar connection cavity 11, because bolt cover 3 and stirrup 4 are fixed as one, so just, make bolt cover 3 be fixed on cover plate 1.Only have operation to unclamp fastening bolt 9 bolt cover 3 to be separated with cover plate 1.
As shown in Figure 2, be connected with the level board 44 horizontally outward extended at the end of side plate 41, it be fixed with bolt sleeve 7, bolt sleeve 7 is provided with groove 70.The snap close 8 of the present embodiment to be sleeved on bolt sleeve 7 and to block fastening bolt 9: snap close 8 has the screw corresponding with groove 70; Lock core 81, its one end is inserted in groove 70 by screw, thus by locked for snap close 8 on bolt sleeve 7.Because snap close 8 covers fastening bolt 9, therefore only have and snap close 8 just can be operated fastening bolt 9 when bolt sleeve 7 takes off, such snap close 8 just serves the effect of blocking to fastening bolt 9, prevents from operating fastening bolt 9 without authorization.
The checkout gear of the present embodiment comprises: be placed in the magnet 6 on bolt sleeve 7, and the action sensor 5 be arranged on snap close 8, action sensor 5 is the transducers by action during magnetic action, shown in action sensor 5 with supervisory control system 17 and/or audible-visual annunciator 18(Fig. 3) be electrically connected.When snap close 8 by locked on bolt sleeve 7 time, action sensor 5 disconnects with the connection line of supervisory control system and/or audible-visual annunciator, when with special key operable lock core 81, lock core is unlocked, when snap close 8 is taken off from bolt sleeve 7, magnetic action disappears, the connection line of action sensor 5 action and supervisory control system and/or audible-visual annunciator is connected, action sensor 5 sends signal to supervisory control system and/or audible-visual annunciator, supervisory control system 17 is cut off and is powered in described electrical apparatus interstar connection cavity, and/or audible-visual annunciator sends sound and light alarm signal, prompting " surveys gas density, electrical verification, electric discharge ", and locking after can power-off being realized (after uncapping, upper level power supply can not send electricity).Also can be connected with supervisory control systems such as Internet of Things and show cover plate opening-closing state.Now could loosen fastening bolt 9, remove bolt cover 3, unclamp cover plate connecting bolt 2, open wire connection cavity and carry out operation.
Embodiment 2
As shown in Figure 3,4, the bolt cover fixture of the present embodiment comprises: stirrup 4, there is the bar shaped top board 40 be placed on cover plate 1, with by the two bar shaped side plates 41,42 of top board 40 two ends along electrical apparatus interstar connection cavity 11 to downward-extension, the end of two bar shaped side plates 41,42 is fixed with level board 41a, 42a that level extends internally, and bolt cover 3 is stacked on top board 40; Fastening bolt 9, is threaded, to be fixed connection with adjusting nut 10 fixing on top board 40 through bolt cover 3.During installation, turn fastening bolt 9, make the bottom surface contacting cover plate 1 bottom it, when then continuing to turn fastening bolt 9, stirrup 4 can move along with turning of fastening bolt 9, until two level board 41a, 42a is resisted against on the flange bottom of electrical apparatus interstar connection cavity 11 tightly, now the bottom of fastening bolt 9 is also resisted against on the end face of cover plate 1 tightly, such stirrup 4 is just at fastening bolt 9 and two level board 41a, be fixed on tightly under the effect of 42a on electrical apparatus interstar connection cavity 11, because bolt cover 3 is integrally fixed with by fastening bolt 9 and stirrup 4, thus bolt cover 3 is also fixed on cover plate 11.
As shown in Figure 4, bolt cover 3 is fixed with bolt sleeve 7, bolt sleeve 7 is provided with groove 70; The snap close 8 of the present embodiment is sleeved on bolt sleeve 7 and fastening bolt 9, and snap close 8 has the screw corresponding with groove 70; One end of lock core 81 is inserted in groove 70 by screw, thus by locked for snap close 8 on bolt sleeve 7 and fastening bolt 9, only have and snap close 8 just can be operated fastening bolt 9 when bolt sleeve 7 and fastening bolt 9 take off, such snap close 8 just serves locked effect to fastening bolt 9.
In the present embodiment, the structure of checkout gear is identical with embodiment 1 with operation principle, is not repeated at this.
Embodiment 3
As shown in Figure 5,6, the bolt cover fixture of the present embodiment comprises: stirrup 4, there is the bar shaped top board 40 be placed on cover plate 1, with by the two bar shaped side plates 41,42 of top board 40 two ends along electrical apparatus interstar connection cavity 11 to downward-extension, the end of two bar shaped side plates 41,42 is fixed with level board 41a, 42a that level extends internally, bolt cover 3 is stacked on top board 40, and bolt cover 3 and top board 40 correspondence position are provided with lower concave part; Fastening bolt 9, is placed in lower concave part and is also threaded, to be fixedly connected with top board 40 by bolt cover 3 with adjusting nut 10 fixing on top board 40 through bolt cover 3.In the present embodiment, the fixing means of stirrup and bolt cover 3 is identical with embodiment 2, is not repeated at this.
As shown in Figure 6, bolt cover 3 is fixed with bolt sleeve 7, bolt sleeve 7 closes on lower concave part, bolt sleeve 7 is provided with groove 70; The snap close 8 of the present embodiment is sleeved on bolt sleeve 7 and also hides on lower concave part, and snap close 8 has the screw corresponding with groove 70; One end of lock core 81 is inserted in groove 70 by screw, thus by locked for snap close 8 on bolt sleeve 7, snap close 8 hides on lower concave part, only has and snap close 8 just can be operated fastening bolt 9 when bolt sleeve 7 takes off, and such snap close 8 just serves locked effect to fastening bolt 9.
In the present embodiment, checkout gear comprises: be arranged on the action sensor 5 on the lock tube 80 of snap close 8, and the action sensor actuating strut 60 be placed on bolt sleeve 7, action sensor 5 is the transducers by mechanical force action, and action sensor 5 is electrically connected with supervisory control system and/or audible-visual annunciator (not shown).When snap close 8 by locked on bolt sleeve 7 time, action sensor 5 disconnects with the connection line of supervisory control system and/or audible-visual annunciator, when with special key operable lock core 81, lock core is unlocked, when snap close 8 is taken off from bolt sleeve 7, action sensor actuating strut returns to normally open under its elastic force effect, the action of action sensor contact, signal is sent to supervisory control system and/or audible-visual annunciator, supervisory control system 17 cuts off the power supply of powering in described electrical apparatus interstar connection cavity, and/or audible-visual annunciator sends sound and light alarm signal, prompting " surveys gas density, electrical verification, electric discharge ", and locking after realizing power-off, now could loosen fastening bolt 9, remove bolt cover 3, unclamp cover plate connecting bolt 2, open wire connection cavity and carry out operation.
Although be explained in detail the present invention above; but the present invention is not limited thereto; those skilled in the art can principle according to the present invention modify, and therefore, all various amendments carried out according to principle of the present invention all should be understood to fall into protection scope of the present invention.
Claims (9)
1. a cover plate protector, is characterized in that comprising:
Cover on the bolt cover (3) of cover plate (1) periphery of the electrical apparatus interstar connection cavity (11) with multiple connecting bolt;
Respectively connecting bolt cover (3) has the bolt cover fixture of fastening bolt (9), for bolt cover (3) is fixed on cover plate (1) periphery with described electrical apparatus interstar connection cavity (11);
Be arranged on the snap close (8) on bolt cover fixture or bolt cover (3), be used for blocking bolt cover fixture fastening bolt (9), be unscrewed to prevent the mobile front fastening bolt (9) of snap close (8);
Be arranged on the checkout gear on snap close (8), be used for detecting snap close (8) and effect is blocked to bolt cover fixture fastening bolt (9), and be connected with supervisory control system (17) and/or audible-visual annunciator (18);
Described bolt cover fixture comprises:
Stirrup (4), have and be buckled on described bolt cover (3) and the bar shaped top board (40) be fixedly connected with it, and by the two bar shaped side plates (41,42) of top board (40) two ends along described electrical apparatus interstar connection cavity (11) to downward-extension.
2. cover plate protector as claimed in claim 1, it is characterized in that, described bolt cover fixture also comprises:
Be fixed on the fixed block (43) of the inner side of a side plate (42);
Described fastening bolt (9) is arranged on another side plate (41);
Wherein, fixed block (43) and described fastening bolt (9) are resisted against on described electrical apparatus interstar connection cavity (11) respectively, described stirrup (4) and described electrical apparatus interstar connection cavity (11) are fixed, thus described bolt cover (3) are fixed on described cover plate (1) periphery.
3. cover plate protector as claimed in claim 2, it is characterized in that, the end of described another side plate (41) is connected with the level board (44) horizontally outward extended, it is fixed with bolt sleeve (7), bolt sleeve (7) is provided with groove (70);
Described snap close (8) is sleeved on described bolt sleeve (7) and goes up and block described fastening bolt (9), it has the screw corresponding with described groove (70);
Lock core (81), its one end is inserted in described groove (70) by screw.
4. cover plate protector as claimed in claim 1, it is characterized in that, described bolt cover fixture also comprises:
The level board (41a, 42a) that the level being fixed on two bar shaped side plates (41,42) end extends internally, described bolt cover (3) is stacked on top board (40);
(9 are connected to be fixed with described top board (40) through described bolt cover (3) described fastening bolt;
Wherein, described two level boards (41a, 42a) are resisted against on the bottom surface of described electrical apparatus interstar connection cavity (11) flange, the bottom of described fastening bolt (9) is resisted against on the end face of described cover plate (1), thus described bolt cover (3) is fixed on described cover plate (1) periphery.
5. cover plate protector as claimed in claim 4, is characterized in that, described bolt cover (3) is fixed with bolt sleeve (7), bolt sleeve (7) is provided with groove (70);
Described snap close (8) is sleeved on described bolt sleeve (7) and described fastening bolt (9), it has the screw corresponding with described groove (70);
Lock core (81), its one end is inserted in described groove (70) by screw.
6. cover plate protector as claimed in claim 1, it is characterized in that, described bolt cover fixture also comprises:
The level board (41a, 42a) that the level being fixed on two bar shaped side plates (41,42) end extends internally, described bolt cover (3) is stacked on top board (40), and bolt cover (3) and top board (40) correspondence position are provided with lower concave part;
Described fastening bolt (9) is placed in lower concave part and is also connected to be fixed with described top board (40) through described bolt cover (3);
Wherein, described two level boards (41a, 42a) are resisted against on the bottom surface of described electrical apparatus interstar connection cavity (11) flange, the bottom of described fastening bolt (9) is resisted against on the end face of described cover plate (1), thus described bolt cover (3) is fixed on described cover plate (1) periphery.
7. cover plate protector as claimed in claim 6, is characterized in that, described bolt cover (3) is fixed with bolt sleeve (7), bolt sleeve (7) is provided with groove (70);
Described snap close (8) is sleeved on described bolt sleeve (7) and goes up and hide on described lower concave part, it has the screw corresponding with described groove (70);
Lock core (81), its one end is inserted in described groove (70) by screw.
8. the cover plate protector as described in claim 3 or 5, is characterized in that, described checkout gear comprises:
Be arranged on the action sensor (5) on described snap close (8), be electrically connected with described supervisory control system (17) and/or audible-visual annunciator (18);
Be arranged on the magnet (6) on described bolt sleeve (7), contact with action sensor (5) magnetic;
When described lock tube (80) departs from described bolt sleeve (7), described snap close (8) blocks event resolves to described fastening bolt (9), the circuit that action sensor is electrically connected with described supervisory control system (17) and/or audible-visual annunciator (18) is connected, action sensor connects transmission signal to described supervisory control system (17) and/or audible-visual annunciator (18), and supervisory control system (17) is cut off power supply and/or audible-visual annunciator (18) in described electrical apparatus interstar connection cavity (11) and sent sound and light alarm.
9. cover plate protector as claimed in claim 7, it is characterized in that, described checkout gear comprises:
Be arranged on the action sensor (5) on the lock tube (80) of described snap close (8), be electrically connected with described supervisory control system (17) and/or audible-visual annunciator (18);
With the action sensor actuating strut (60) of described bolt sleeve (7) Mechanical Contact;
When described lock tube (80) departs from described bolt sleeve (7), described snap close (8) blocks event resolves to described fastening bolt (9), the circuit that action sensor is electrically connected with described supervisory control system (17) and/or audible-visual annunciator (18) is connected, action sensor connects transmission signal to described supervisory control system (17) and/or audible-visual annunciator (18), and supervisory control system (17) is cut off power supply and/or audible-visual annunciator (18) in described electrical apparatus interstar connection cavity (11) and sent sound and light alarm.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210147572.3A CN103391698B (en) | 2012-05-11 | 2012-05-11 | A kind of cover plate protector |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210147572.3A CN103391698B (en) | 2012-05-11 | 2012-05-11 | A kind of cover plate protector |
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| Publication Number | Publication Date |
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| CN103391698A CN103391698A (en) | 2013-11-13 |
| CN103391698B true CN103391698B (en) | 2016-02-24 |
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| CN201210147572.3A Active CN103391698B (en) | 2012-05-11 | 2012-05-11 | A kind of cover plate protector |
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Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN109714924A (en) * | 2019-02-21 | 2019-05-03 | 山西全安新技术开发有限公司 | It is a kind of for fastening the method and device of electric apparatus for explosive atmospheres cavity |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201623495U (en) * | 2010-03-25 | 2010-11-03 | 成都瑞杰科能电气有限公司 | Reactive power compensation complete equipment of SVC transformer substation |
| CN201850863U (en) * | 2009-07-15 | 2011-06-01 | 山西全安新技术开发有限公司 | Uncovering and locking device in case of gas exceeding limit |
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2012
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Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN201850863U (en) * | 2009-07-15 | 2011-06-01 | 山西全安新技术开发有限公司 | Uncovering and locking device in case of gas exceeding limit |
| CN201623495U (en) * | 2010-03-25 | 2010-11-03 | 成都瑞杰科能电气有限公司 | Reactive power compensation complete equipment of SVC transformer substation |
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| CN103391698A (en) | 2013-11-13 |
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