CN102222861B - Novel explosion-proof distribution box - Google Patents
Novel explosion-proof distribution box Download PDFInfo
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- CN102222861B CN102222861B CN201010149497.5A CN201010149497A CN102222861B CN 102222861 B CN102222861 B CN 102222861B CN 201010149497 A CN201010149497 A CN 201010149497A CN 102222861 B CN102222861 B CN 102222861B
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- proof
- explosion
- flame proof
- handle
- axle
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Abstract
The invention discloses a novel explosion-proof distribution box comprising a junction box bottom shell, a junction box cover, an explosion-proof bottom shell and an explosion-proof shell cover, wherein a threaded explosion-proof jointing surface is arranged for connecting the explosion-proof bottom shell and the explosion-proof shell cover; a modular turnoff bracket is arranged at one side of the explosion-proof bottom shell and is provided with a switch mechanism; and a modular handle is arranged at one side of the explosion-proof shell cover and is provided with a pulling shaft operation mechanism. The novel explosion-proof distribution box has the benefits that parts can be machined simply, the explosion-proof performance is reliable, the production efficiency is improved; and the equipment cost is reduced, the management cost is reduced, and the usage of metal resources is reduced.
Description
Technical field
The present invention relates to a kind of distribution box, particularly a kind of Novel explosion-proof distribution box.
Background technology
At present, known flame-proof type explosion-proof distribution box device is mainly to be covered by flame proof, flame proof drain pan, and illumination or power switch, switch operating mechanism, flame proof axle, handle, the structures such as flameproof joint form.Its shortcoming mainly contain following some:
1. known II class C level flame-proof type explosion-proof distribution box cap opening direction is vertical unlocking, reason is that cylinder or the drain pan of seam explosion-resistant enclosure structure and the mating surface of lid are cylindrical surface, flameproof joint maximal clearance (being the maximum of the difference of two cylindrical surface inner and outer diameter) requires to be less than 0.15mm, and flameproof joint vertically (direction of open cap) bonding length is greater than 25mm, two flameproof joint surface roughness Ra require to keep between 3.2-6.3, surface, composition surface does not allow the scuffing of colliding with, composition surface affects explosion-proof performance after colliding with and scratching, scratching even makes product lose explosion-proof performance.Flameproof joint requires to reach the degree of depth more than 25mm, and gap of flameproof joint requires the product below 0.15mm to be only the product that meets explosion-proof criteria requirement, this causes existing explosion-proof electrical distribution box product in assembling or keeps in repair while uncapping all gruelling, necessary careful vertical unlocking or fastening, axial power thrusts control does not with great difficulty make to cover stuck on shell, exerted oneself conference damage cylinder or seam flameproof joint, cause flameproof joint to lose efficacy, if flameproof joint lost efficacy, when blast in explosion-proof electrical distribution box inside, inner spark may be transmitted to explosion-proof electrical distribution box extraneous explosion gaseous environment, easily cause an explosion accident.
2. current flame-proof type explosion-proof distribution box product will effectively guarantee that in actual production maximal clearance, casing explosion-proof composition surface is that 0.15mm is more difficult, no matter be II class A, the B level equipment of planar structure, or the II class C level equipment of cylinder and fixing structure, when all processing or spraying paint because of shell, because of stressed or the easily generation of being heated, be out of shape, actual production maximal clearance, casing explosion-proof composition surface is out larger with theoretical value error, the gap of flameproof joint numerical value of each product differs larger, unstable product quality.
3. if current II class C level explosion-proof electrical distribution box equipment flame proof gap of flame proof drain pan and flame proof lid when producing assembling is too little, fasten and open very difficult, although flame proof gap process too large unlatching more easily, gap, composition surface does not meet requirement of explosion proof.Even if flameproof joint maximal clearance just in time guarantees 0.15mm, because the little reason that engages distance in gap, composition surface simultaneously, fastening or unlatching shell are also very difficult.And explosion-proof casing adopts cylinder or fixing structure difficulty when machining and the check of product explosion suppresion surface larger, and processing and proofer's experience and technical quality are had relatively high expectations, and man-hour is long, and production efficiency is lower, and product parts interchangeability is poor, and management cost is higher.
Known II class C level explosion-proof electrical distribution box shell adopts cylinder or seam flameproof joint structure, cover with several bolted covers and housing, each bolt centre distance requires to be not more than 120mm, and 8 above stainless steel bolts of operated by rotary motion fix explosion-proof casing and flame proof lid.While using a plurality of bolt fastening structures to cause processing and assembling and maintenance, man-hour is long, efficiency is low, and product material consumption is many, and waste resource, does not meet the policy economizing on resources that China advocates now.
4. current II class A, B, C level flame-proof type explosion-proof distribution box is when the inner installation of explosion-proof casing switch, plastics operating grip on switch must align with the special metallic magnetism on Explosion-proof cap to be used in conjunction with and could fasten explosion-proof electrical distribution box flame proof lid, because switch is arranged on explosion-proof casing base plate, mechanism is arranged on flame proof and covers, and the mechanism covering is random slip or the rotating mechanism that does not have service position to limit, if in housing, circuit breaker handle departs from the mechanism covering during assembling, the mechanism covering can be stuck on circuit breaker handle, cause not upper cover of the malfunctioning or basic button of mechanism, and existing mechanism need to be more by the number of components of part assembling, installation time is long, assembler is had relatively high expectations.So current explosion-proof power distribution case apparatus exists switching mechanism to fall behind, switching mechanism part is many, assembler's duration, workshop management cost is high, and because of the different switching mechanism mass discrepancies that produce of assembly manipulation person are large and potential safety hazard more than etc. drawback.And it is also more difficult that existing explosion-proof electrical distribution box equipment carries out on-site maintenance or replacing switch and mechanism's parts.
5. when current explosion-proof power distribution case apparatus is used in explosive gas atmosphere, lack the safety measure that just can uncap after assurance power-off, only on equipment, be provided with and forbid charged warning sign board of uncapping, there is no the mechanical interlocking measure that just can open lid after power-off, if operator has been with electric-opening in unwitting situation explosion-proof power distribution case lid, energized conductor is leaked in explosive gas atmosphere cruelly, easily cause serious explosion accident.
Summary of the invention
For the deficiency of existing shortcoming and technology, the utility model provides a kind of Novel explosion-proof distribution box.
To achieve these goals, the measure that the present invention takes:
A kind of Novel explosion-proof distribution box, comprise junction box's drain pan, junction box's case lid, flame proof drain pan and flame proof cap, between described flame proof drain pan and flame proof cap, by being set, threaded flameproof joint connects, wherein in flame proof drain pan one side, the modular support that opens circuit is installed, and with switching mechanism, a side at flame proof cap is provided with modular handle, and with lifting axle operating mechanism;
Described modular opens circuit in support Control Shaft is installed, Control Shaft two end devices have split washer, on Control Shaft, be also provided with axle sleeve and coupling body, wherein, switch fixedly mounts by switch bracket, switch keeper and holding screw, and also lays break-make motion between Control Shaft and switch;
Handle on described modular handle is arranged on handle panel by positioning sliding block, handle is connected with button by positioning sliding block and spring, wherein on handle, be also provided with handle cover, flame proof is also installed in modular handle and lifts axle, flame proof lifts and on axle, is provided with flame proof axle, flame proof axle is fixed by split washer, axle sleeve and spring, and described flame proof cap is also provided with sign board outward.
Beneficial effect of the present invention: parts machining is simple, explosion-proof performance is reliable, for II class flame-proof type explosion-proof highest ranking product, adopt modular member that efficiency of assembling is improved more than three times, as long as open device housings, rotarily open, not limited by switching mechanism, convenient and reliable, easy damaged explosion suppresion surface not during I& M equipment, adopts pioneering handle design, guarantees the power-off mechanical interlocking of uncapping, the in the situation that of not power-off, cannot open cap, after power-off, just can uncap.Because adopt the flame-proof type C level structure design of innovation, so this product is not only applicable to II class C level place, can replace II class A level and II class B level electrical apparatus for explosive atmospheres simultaneously completely, improved production efficiency, reduce equipment cost, reduce management cost, reduce the use amount of metals resources.
Accompanying drawing explanation
Fig. 1, structural representation of the present invention.
Embodiment
A kind of Novel explosion-proof distribution box, comprise junction box's drain pan 1, junction box's case lid 2, flame proof drain pan 3 and flame proof cap 4, between described flame proof drain pan 3 and flame proof cap 4, by being set, threaded flameproof joint 5 connects, wherein in flame proof drain pan 3 one sides, the modular support that opens circuit is installed, and with switching mechanism, a side at flame proof cap 4 is provided with modular handle, and with lifting axle operating mechanism; Described modular opens circuit in support Control Shaft 6 is installed, 6 liang of end devices of Control Shaft have split washer, on Control Shaft 6, be also provided with axle sleeve and coupling body 9, wherein, switch 10 fixedly mounts by switch bracket 11, switch keeper 21 and holding screw 12, and between Control Shaft 6 and switch, also lays break-make motion 13; Handle 14 on described modular handle is arranged on handle panel 15 by positioning sliding block, handle is connected with button 7 by positioning sliding block 20 and spring, wherein on handle 14, be also provided with handle cover 17, flame proof is also installed in modular handle and lifts axle 16, flame proof lifts and on axle 16, is provided with flame proof axle 18, flame proof axle 18 is fixed by split washer, axle sleeve and spring, the outer sign board 8 that is also provided with of described flame proof cap 4.
In the middle of actual use process of the present invention, threaded flameproof joint 5 is explosion-proof composition surface, flame proof cap 4 can be easily opened and be fastened in rotation, do not need to apply too large external force, high request without surface roughness, while fastening flame proof cap 4, can there is not the stuck phenomenon at flame proof drain pan 3 of flame proof cap 4, adopt screw thread rotation to open the object that design of the present invention has realized protection flameproof joint; The flame-proof type explosion-proof distribution box of threaded flameproof joint 5 is as long as guarantee that the effective joggle number of screw thread surpasses 5 and buckles, pitch is no more than 3mm, threaded engagement grade is middle rank, and without the requirement of surface roughness and explosion suppresion surface gap and length, product explosion-proof performance is more stable; Flameproof joint adopts threaded flameproof joint 5 structures, the threaded flameproof joint 5 relative cylinders of processing or seam explosion suppresion surface handling ease many, to housing quality inspection person and final products assembler's experience and technical quality, require lower, man-hour is short, production efficiency is higher, product parts interchangeability is strong, and management cost is lower.
Modular handle band lifts axle operating mechanism, this design has realized that handle 14 rotatablely moves and 18 elevating movements of flame proof axle, breakthrough solution the flame-proof type explosion-proof distribution box switch of screw thread rotation open type and switching manipulation control a difficult problem, realize the effective control to the miniature circuit breaker in flame proof drain pan 3 or large electric current breaker of plastic casing; Due to the design of integral type modular structure, this mechanism components is can Batch assemblage good with standby, make it to become the universal component of product of the present invention, while needing completed knocked down products, module is screwed in to flame proof cap 4, easy for installation, packaging efficiency compare at present known common cylinder or seam explosion separation structure operating mechanism high more than 3 times.
Modular circuit breaker supporting band operating parts switching mechanism, this design has solved the installation of miniature circuit breaker in the flame-proof type distribution box product rotarily opening and has fixed and control problem, be applicable to various different operating electric currents and with the miniature circuit breaker of creepage protection function, the modular operating mechanism module that this Modular switch mechanism and explosion-proof shell cover forms perfect combination, can shift to an earlier date and assemble in enormous quantities this switching mechanism, during final products assembling, the miniature circuit breaker needing is fixed in module switch mechanism with two holding screws, easy to assembly, realizing the standardization assembling of flame-proof type explosion-proof distribution box produces, compared to existing common flame-proof type explosion-proof distribution box production, the production efficiency of this design is higher, product quality is more stable, can shorten greatly the management cost of explosion-proof electrical distribution box product delivery cycle and reduction assembling line.
The use of above two kinds of novelty module mechanisms, can also make the on-site maintenance work of explosion-proof electrical distribution box product become easier to be light.
The mechanical interlocks of uncapping after power-off of the present invention, only have when modular operating grip 14 positions are transformed into de-energized, while pressing the button 7 of lower handle front end simultaneously, the flame proof axle 28 of handle mechanism just can automatic spring, now also power-off of switch, at this moment just can rotarily open flame proof cap 4, now handle 14 loses the control action to switch automatically, the misoperation to switch in the time of can effectively avoiding uncapping; If open handle 14 when of the present invention, do not forward de-energized to, now switch 10 does not have power-off, even if push button 7, by the interlocking effect of handle 14 and flame proof axle 18 and switch bracket, also cannot rotarily open flame proof cap 4, this design has realized the mechanical interlock action that the power-off of real flame-proof type explosion-proof distribution box is uncapped, and can effectively guarantee the safety of operator and explosion-proof place facility.
Those ordinary skill in the art's simple change and replacement are all within protection scope of the present invention.
Claims (1)
1. a Novel explosion-proof distribution box, comprise junction box's drain pan (1), junction box's case lid (2), flame proof drain pan (3) and flame proof cap (4), it is characterized in that: between described flame proof drain pan (3) and flame proof cap (4), by threaded flameproof joint (5) is set, connect, wherein in flame proof drain pan (3) one sides, modular circuit breaker support is installed, and with switching mechanism, a side at flame proof cap (4) is provided with modular handle, and with lifting axle operating mechanism, Control Shaft (6) is installed in described modular circuit breaker support, Control Shaft (6) two end devices have split washer, on Control Shaft (6), be also provided with axle sleeve and coupling body (9), wherein, switch (10) is by switch bracket (11), switch keeper (21) and holding screw (12) fixed installation, and between Control Shaft (6) and switch, also lay break-make motion (13), handle (14) on described modular handle is arranged on handle panel (15) by positioning sliding block, handle is connected with button (7) by positioning sliding block (20) and spring, wherein on handle (14), be also provided with handle cover (17), flame proof is also installed in modular handle and lifts axle (16), flame proof lifts and on axle (16), is provided with flame proof axle (18), flame proof axle (18) passes through split washer, axle sleeve and spring are fixed, the outer sign board (8) that is also provided with of described flame proof cap (4).
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010149497.5A CN102222861B (en) | 2010-04-16 | 2010-04-16 | Novel explosion-proof distribution box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201010149497.5A CN102222861B (en) | 2010-04-16 | 2010-04-16 | Novel explosion-proof distribution box |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102222861A CN102222861A (en) | 2011-10-19 |
| CN102222861B true CN102222861B (en) | 2014-11-05 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201010149497.5A Expired - Fee Related CN102222861B (en) | 2010-04-16 | 2010-04-16 | Novel explosion-proof distribution box |
Country Status (1)
| Country | Link |
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| CN (1) | CN102222861B (en) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102496500A (en) * | 2011-12-27 | 2012-06-13 | 四川航天系统工程研究所 | Novel explosion-proof conversion switch |
| MX343790B (en) * | 2012-08-24 | 2016-11-23 | Cooper Technologies Co | Programmable termparature controller for hazardous location enclosures. |
| WO2017139650A1 (en) | 2016-02-12 | 2017-08-17 | Cooper Technologies Company | Enclosure arrangements; components; and methods |
| CN109990094B (en) * | 2017-12-31 | 2021-04-13 | 中国人民解放军63653部队 | Sealing protection and opening method of observation device under action of explosion impact |
| DE102018118195B4 (en) * | 2018-07-27 | 2020-06-04 | R. Stahl Schaltgeräte GmbH | Explosion-proof housing with split lid |
| CN115458375B (en) * | 2022-10-17 | 2023-06-02 | 明迈防爆技术(上海)有限公司 | Explosion-proof circuit breaker operation structure |
Citations (4)
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|---|---|---|---|---|
| CN2266783Y (en) * | 1995-06-05 | 1997-11-05 | 沈阳北方防爆电器厂 | Control device for flame-proof type explosion-proof luminating distribution box |
| CN2919619Y (en) * | 2006-04-06 | 2007-07-04 | 大庆奉天电力器材厂 | Flameproof and rotproof power illuminating distributor box |
| CN200972996Y (en) * | 2006-11-01 | 2007-11-07 | 上海宝临防爆电器有限公司 | Combined explosion-proof distribution box |
| CN201708457U (en) * | 2010-04-16 | 2011-01-12 | 宁波远东防爆器材有限公司 | Novel explosion-proof distribution box |
Family Cites Families (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP4048167B2 (en) * | 2003-12-24 | 2008-02-13 | 株式会社大同工業所 | Explosion-proof device |
| JP4508679B2 (en) * | 2004-02-20 | 2010-07-21 | サンクス株式会社 | Flameproof enclosure and area sensor |
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2010
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|---|---|---|---|---|
| CN2266783Y (en) * | 1995-06-05 | 1997-11-05 | 沈阳北方防爆电器厂 | Control device for flame-proof type explosion-proof luminating distribution box |
| CN2919619Y (en) * | 2006-04-06 | 2007-07-04 | 大庆奉天电力器材厂 | Flameproof and rotproof power illuminating distributor box |
| CN200972996Y (en) * | 2006-11-01 | 2007-11-07 | 上海宝临防爆电器有限公司 | Combined explosion-proof distribution box |
| CN201708457U (en) * | 2010-04-16 | 2011-01-12 | 宁波远东防爆器材有限公司 | Novel explosion-proof distribution box |
Non-Patent Citations (4)
| Title |
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| JP特开2005-180878A 2005.07.07 * |
| JP特开2005-235643A 2005.09.02 * |
| 张海鸥.隔爆型接线端子的结构型式与技术要求.《电气防爆》.2009,(第2期),第4页第2栏倒数第24-29行. * |
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| CN102222861A (en) | 2011-10-19 |
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| CF01 | Termination of patent right due to non-payment of annual fee |