CN108512169B - Bus bridge frame box expansion joint and bus bridge frame expansion box - Google Patents
Bus bridge frame box expansion joint and bus bridge frame expansion box Download PDFInfo
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- CN108512169B CN108512169B CN201810479317.6A CN201810479317A CN108512169B CN 108512169 B CN108512169 B CN 108512169B CN 201810479317 A CN201810479317 A CN 201810479317A CN 108512169 B CN108512169 B CN 108512169B
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- joint body
- expansion
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- 238000007789 sealing Methods 0.000 claims abstract description 19
- 230000009975 flexible effect Effects 0.000 claims description 7
- 241001227561 Valgus Species 0.000 claims description 2
- 239000004020 conductor Substances 0.000 description 12
- 238000003825 pressing Methods 0.000 description 9
- 238000005457 optimization Methods 0.000 description 6
- 238000005452 bending Methods 0.000 description 5
- 230000000694 effects Effects 0.000 description 5
- 230000001681 protective effect Effects 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- 230000008602 contraction Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000000428 dust Substances 0.000 description 3
- 238000009434 installation Methods 0.000 description 3
- 230000009286 beneficial effect Effects 0.000 description 2
- 230000005540 biological transmission Effects 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- 229910000831 Steel Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 230000005611 electricity Effects 0.000 description 1
- 238000002955 isolation Methods 0.000 description 1
- 210000001503 joint Anatomy 0.000 description 1
- 238000004080 punching Methods 0.000 description 1
- 238000006748 scratching Methods 0.000 description 1
- 230000002393 scratching effect Effects 0.000 description 1
- 230000006641 stabilisation Effects 0.000 description 1
- 238000011105 stabilization Methods 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
Classifications
-
- H—ELECTRICITY
- H02—GENERATION; CONVERSION OR DISTRIBUTION OF ELECTRIC POWER
- H02G—INSTALLATION OF ELECTRIC CABLES OR LINES, OR OF COMBINED OPTICAL AND ELECTRIC CABLES OR LINES
- H02G5/00—Installations of bus-bars
- H02G5/06—Totally-enclosed installations, e.g. in metal casings
Landscapes
- Bridges Or Land Bridges (AREA)
- Installation Of Bus-Bars (AREA)
Abstract
The utility model provides a bus bridge frame box expansion joint and a bus bridge frame expansion box, and relates to the technical field of closed bus connection. The bus bridge frame box expansion joint comprises an inner joint body and an outer joint body, wherein the inner joint body is sleeved in the outer joint body in a telescopic manner, the outer joint body is a rectangular cylinder, an everting edge is arranged on the side face of the broadside of the outer box body and is attached to the outer wall of the inner joint body, perforations are uniformly distributed on the everting edge, connecting long holes corresponding to the positions of the perforations are formed in the inner joint body along the telescopic direction, and telescopic sliding of the expansion joint is realized by arranging the perforations and the connecting long holes. The inner wall of the inner section body is sealed and buckled with the groove-shaped buckle cover, the groove-shaped buckle cover is arranged in parallel with the connecting long hole, the groove-shaped buckle cover is internally provided with a sliding block matched with the groove-shaped buckle cover in shape, the outward turning edge and the inner section body are tightly pressed and fixed by screwing the sliding block through bolts, the integrity of the telescopic joint is ensured, the groove-shaped buckle cover isolates the connecting long hole from the inside of the box body, and the joint of the inner section body and the outer section body is ensured to have good sealing performance.
Description
Technical Field
The utility model relates to the technical field of closed bus connection, in particular to a bus bridge box expansion joint and a bus bridge expansion box.
Background
In the engineering practice of electricity generation and transformer, realize the electric current transmission through sealed busbar between the lead-out wire of generator and the low-voltage side of main transformer or the low-voltage side of transformer and the high-voltage distribution equipment, sealed busbar includes protective housing, bus bar conductor and bus bar bridge, and the bus bar bridge is used for insulating support bus bar conductor, and the bus bar conductor seals and sets up in the protective housing, forms the environment of relative isolation with the external world, avoids dust and the aqueous vapor in the air to get into and causes the short circuit to the bus bar conductor in the protective housing, and then has improved sealed busbar's job stabilization nature.
The protective shell is usually made into the shape of a box body, the box body is made of aluminum plates, the corrosion resistance is good, and the additional eddy current loss caused by the steel box body is avoided. In the installation, because there is the error in measuring and the actual assembly, lead to the installation of box often to appear axial cooperation deviation, use the flexible coupling of corresponding material such as rubber bellows at the connection tip of box, however, the life of this material is limited, needs frequent change.
The technical scheme disclosed in the Chinese patent application publication No. CN202930877U is developed later, the expansion joint device of the enclosed bus shell comprises an outer shell and an inner shell, wherein the outer shell and the inner shell are of rectangular frame structures, the outer shell and the inner shell are sleeved together, and the end parts of the inner shell and the outer shell are respectively provided with an outward flange and an inward flange so as to prevent the inner shell from falling out of the outer shell. The length adjustment is carried out by adopting a drawing mode, so that the assembly error can be well compensated. However, due to the lack of a corresponding fixing structure between the inner shell and the outer shell, when the inner shell and the outer shell are correspondingly stretched or stressed and scratched in use, the busbar conductors erected in the inner shell and the outer shell generate corresponding stretching deformation or scratching deformation, so that the multiphase busbar conductors can be short-circuited, and the safety of power transmission is seriously influenced.
Disclosure of Invention
The utility model aims to provide a bus bridge box expansion joint, which aims to solve the safety problem caused by the fact that the existing expansion joint lacks of fixed support and the bus leakage distance is changed. The utility model also aims to provide the telescopic box body of the bus bridge frame, so as to solve the safety problem caused by the fact that the existing telescopic joint lacks of fixed support and the bus leakage distance is changed.
In order to achieve the above purpose, the technical scheme of the bus bridge frame box expansion joint of the utility model is as follows:
the bus bridge box expansion joint comprises an inner joint body and an outer joint body which are mutually sleeved in a telescopic manner, a closing-in structure for sliding support of the inner joint body is arranged at a port of the outer joint body, the closing-in structure is matched with the outer side face of the inner joint body in a sealing manner, and a fastening structure for pressing and fixedly connecting the inner joint body and the outer joint body is arranged on at least one edge of the closing-in structure in a group mode.
The beneficial effects are that: the telescopic joint is used for sealing and connecting the two sections of bus bridge frame boxes, the inner joint body and the outer joint body are tightly and fixedly connected through the fastening structure, the integrity of the telescopic joint is guaranteed, unnecessary telescopic movement or stress bending deformation of the telescopic joint is avoided, and therefore the hidden danger of short circuit of bus conductors caused by the change of bus leakage distance is eliminated. After the telescopic joint is installed in place, the closing structure of the outer joint body is matched with the outer side face seal of the inner joint body, so that the sealing performance of the connecting position of the inner joint body and the outer joint body is guaranteed, foreign matters such as dust and water vapor outside are prevented from entering, and the bus conductor is protected better.
In order to increase the contact area between the closing-in structure and the inner joint body and improve the closure and structural strength of the expansion joint, the fastening structure is further limited, and the fastening structure comprises an everting structure with perforations, connecting long holes which are arranged at the edge of the closing-in structure and correspond to the perforation positions on the inner joint body and extend along the expansion direction, and fasteners which are penetrated in the perforations and the connecting long holes.
In order to realize the fastening connection of the inner joint body and the outer joint body, the everting structure is further limited, and the everting structure is an everting nose pressing or everting edge which is arranged on the closing structure and is parallel to the outer side surface of the inner joint body.
In order to achieve the fastening connection of the inner joint body and the outer joint body, the fastening piece is further defined as a threaded bolt and a threaded nut.
In order to ensure the sealing performance of the inner section body, the fastening structure is further limited, and a groove type buckle cover is arranged on the inner wall of the inner section body in a sealing and buckling manner.
In order to improve the fastening connection strength of the inner joint body and the outer joint body, the structure of the expansion joint is further limited, a flaring structure is arranged at a port of the inner joint body, and an inner fastening structure for compressing and fixedly connecting the inner joint body and the outer joint body is arranged on at least one side of the flaring structure in a group.
In order to achieve the above purpose, the technical scheme of the bus bridge telescopic box body provided by the utility model is as follows:
the bus bridge telescopic box body comprises an inner bridge box body and an outer bridge box body which are mutually telescopic and sleeved together, a closing-in structure for sliding support of the inner bridge box body is arranged at a port of the outer bridge box body, the closing-in structure is matched with an outer side face seal of the inner bridge box body, and a fastening structure for compressing the inner bridge box body and the outer bridge box body to be fixedly connected is arranged on at least one side of the closing-in structure in a group mode.
The beneficial effects are that: the inner bridge frame box body and the outer bridge frame box body are tightly and fixedly connected through the fastening structure, so that the integrity of the bridge frame box body is guaranteed, unnecessary telescopic movement or stress bending deformation of the bridge frame box body is avoided, and the hidden danger of short circuit of a bus conductor caused by the change of the bus leakage distance is eliminated. After the telescopic box body is installed in place, the closing-in structure of the outer bridge frame box body is matched with the outer side face seal of the inner bridge frame box body, so that the sealing performance at the telescopic connection position is guaranteed, foreign matters such as dust and water vapor outside are prevented from entering, and the effect of better protecting the bus conductors is achieved.
In order to increase the contact area between the closing-in structure and the inner bridge frame box body and improve the sealing performance and the structural strength of the telescopic connection part, the fastening structure is further limited, and the fastening structure comprises an everting structure with perforations, connecting long holes which are arranged at the edge of the closing-in structure and correspond to the perforation positions and extend along the telescopic direction, and fasteners which are arranged in the perforations and the connecting long holes in a penetrating manner.
In order to realize the fastening connection of the inner bridge frame box body and the outer bridge frame box body, the fastening piece is further limited, and the everting structure is an everting nose or an everting edge which is arranged on the closing structure and is parallel to the outer side surface of the inner bridge frame box body.
In order to realize the fastening connection of the inner bridge frame box body and the outer bridge frame box body, the fastening piece is further limited, and the fastening piece is a bolt and a nut which are in threaded fit.
In order to ensure the sealing performance of the inner bridge frame box body, the fastening structure is further limited, and a groove type buckle cover is arranged on the inner wall of the inner bridge frame box body in a sealing buckling manner.
In order to improve the fastening connection strength of the inner bridge frame box body and the outer bridge frame box body, the telescopic connection structure is further limited, a flaring structure is arranged at a port of the inner bridge frame box body, and an inner fastening structure for compressing and fixedly connecting the inner bridge frame box body and the outer bridge frame box body is arranged on at least one side of the flaring structure in a group.
Drawings
FIG. 1 is a schematic perspective view of an inner joint body in an embodiment 1 of a bus bridge box expansion joint according to the present utility model;
FIG. 2 is a schematic perspective view of an outer joint in embodiment 1 of a bus bridge box expansion joint according to the present utility model;
FIG. 3 is a schematic diagram of an assembled side perspective view of a specific embodiment 1 of a bus bridge box expansion joint of the present utility model;
FIG. 4 is a schematic perspective view of FIG. 2A;
FIG. 5 is a schematic perspective view of the view B in FIG. 1;
FIG. 6 is a schematic diagram of an assembled side perspective view of a specific embodiment 6 of a bus bridge box expansion joint of the present utility model;
FIG. 7 is an exploded view of FIG. 6 at C;
FIG. 8 is a schematic diagram showing an assembled side perspective view of a specific embodiment 2 of the expansion tank of the bus bridge of the present utility model;
FIG. 9 is a schematic view of the outer case of FIG. 8;
FIG. 10 is a schematic view of the inner housing of FIG. 8;
in the figure: 1-inner joint body, 10-flaring edge, 11-second perforation, 13-first connecting slot hole, 14-first groove type buckle closure, 15-first sliding block, 2-outer joint body, 20-edge, 21-first perforation, 23-second connecting slot hole, 24-second groove type buckle closure, 25-second sliding block, 26-circular pressing plate, 27-screw and 3-horn mouth.
Detailed Description
Embodiments of the present utility model will be further described with reference to the accompanying drawings.
In the specific embodiment 1 of the bus bridge box expansion joint disclosed by the utility model, as shown in fig. 1 to 5, the bus bridge box expansion joint comprises an inner joint body 1 and an outer joint body 2, wherein the inner joint body 1 is sleeved in the outer joint body 2 and can perform expansion and contraction activities, the inner joint body 1 and the outer joint body 2 are both rectangular cylinders and are connected with corresponding bus bridge box ports, a closing structure is arranged on the side surface of the opposite wide side of one port of the outer joint body 2, the closing structure is provided with an everting edge 20 which is attached to the wall surface of the inner joint body 1, the closing structure is manufactured by stamping forming or welding a Z-shaped workpiece, and three first perforations 21 are uniformly and parallelly arranged on the everting edge 20.
The inner joint body 1 is correspondingly provided with three first connecting long holes 13 extending along the extending and contracting direction on the side face of the opposite broadside, first bolts penetrate through the first through holes 21 and the first connecting long holes 13 in sequence, first sliding blocks 15 are connected to the inner side of the inner joint body 1 in a threaded fit mode with the first bolts, the first sliding blocks 15 correspond to nuts, the inner joint body 1 and the everting edges 20 are pressed and fixed through screwing the first bolts, and fixed connection between the inner joint body 1 and the outer joint body 2 is achieved. In order to solve the problem of tightness caused by the arrangement of the first connecting long hole 13 on the inner joint body 1, a first groove-shaped buckle cover 14 is arranged on the inner wall of the inner joint body 1 in a sealing and buckling manner, the first groove-shaped buckle cover 14 is in anti-rotation fit with the first sliding block 15, and the inner joint body 1 is isolated from the external environment through the first groove-shaped buckle cover 14.
In order to enhance the connection strength of the expansion joint after fastening, a flaring overturning edge 10 is arranged on the side surface of the opposite wide edge of one port of the inner joint body 1, the flaring overturning edge 10 can also be manufactured by stamping forming or welding a Z-shaped workpiece, and three second perforations 11 are uniformly arranged on the flaring overturning edge 10 in parallel. The inner side wall of the outer joint body 2 is buckled and provided with a second groove-shaped buckle cover 24, the groove bottom surface of the second groove-shaped buckle cover 24 is provided with a second connecting long hole 23 which extends along the telescopic direction corresponding to the second perforation 11, the lengths of the first connecting long hole 13 and the second connecting long hole 23 are not smaller than the set telescopic amount, the second groove-shaped buckle cover 24 is sequentially provided with a second bolt through the second perforation 11 and the second connecting long hole 23, the second groove-shaped buckle cover 24 stops screwing a second slide block 25, the second slide block 25 corresponds to the function of a nut, the groove bottom surface of the second groove-shaped buckle cover 24 and the flaring overturning edge 10 are tightly fixed by screwing the second bolt, the integrity of the telescopic joint structure is further improved by tightly pressing and fixing the two parts, and unnecessary telescopic movement or stress bending deformation of the telescopic joint is avoided, so that the hidden trouble that a bus conductor is short-circuited due to the change of a bus leakage distance is eliminated.
The above specific embodiment 1 is a preferred embodiment of the bus bridge box expansion joint of the present utility model, and in other embodiments, the corresponding structure may be adjusted, simplified or further optimized as required, and the following adjustment and variation may be specifically provided:
in the specific embodiment 2 of the bus bridge box expansion joint, the bus bridge box expansion joint comprises an inner joint body and an outer joint body which are mutually sleeved in a telescopic way, a closing-in structure for sliding support of the inner joint body is arranged at a port of the outer joint body, the closing-in structure is in sealing fit with the outer side face of the inner joint body, and a fastening structure for compressing and fixedly connecting the inner joint body and the outer joint body is arranged at the closing-in structure. The fastener of the present utility model connecting the inner and outer segments may take other forms than that of embodiment 1, such as: the fastener includes the screw and is equipped with the circular clamp plate of middle part cooperation screw hole, and the radius of circular clamp plate is greater than or equal to the length of connecting the slot hole on the inner segment body, makes the circular clamp plate compress tightly the box wall of the inner segment body and the valgus edge of the outer segment body through screwing up the screw, can guarantee all the time in flexible activity that circular clamp plate will connect slot hole department and seal moreover.
In the embodiment 3 of the bus bridge box expansion joint according to the present utility model, as a further optimization of the embodiment 2, in order to increase the contact area between the closing structure and the inner joint body and improve the sealing performance and structural strength of the expansion joint, the fastening structure includes an everting structure with perforations provided at the edge of the closing structure, a connection slot hole extending in the expansion direction and provided at a position corresponding to the perforations on the inner joint body, and a fastener penetrating into the perforations and the connection slot hole.
In the embodiment 4 of the bus bridge box expansion joint according to the present utility model, as a further optimization of the embodiment 3, in order to achieve the fastening connection between the inner joint body and the outer joint body, the everting structure is an everting nose or an everting edge that is disposed on the closing structure and parallel to the outer side surface of the inner joint body, and in other embodiments, the everting edge and the inner joint body may be formed as an integral structure by punching and bending, and in addition, the everting edge may be replaced by an ear-shaped connection structure.
In the embodiment 5 of the bus bridge box expansion joint of the utility model, as a further optimization of the embodiment 3, in order to realize the fastening connection of the inner joint body and the outer joint body, the fastening piece is a threaded bolt and a threaded nut, and in other embodiments, the fastening piece can be provided with a threaded bolt and a square sliding block with a middle threaded hole.
In the embodiment 6 of the bus bridge box expansion joint according to the present utility model, as a further optimization of any one of embodiments 2 to 5, in order to ensure the sealing performance of the inner joint body, a groove-shaped buckle cover is fastened on the inner wall of the inner joint body in a sealing manner, in other embodiments, the groove-shaped buckle cover may be adjusted correspondingly by changing the structure of a fastener, as shown in fig. 6 and 7, the fastener includes a screw and a circular pressing plate provided with a middle portion matching with a threaded hole, the radius of the circular pressing plate is greater than or equal to the length of a connecting slot hole on the inner joint body, the circular pressing plate is pressed against the outward turned edge of the box wall and the outer joint body of the inner joint body by screwing the screw, and in the expansion and contraction activities, the sealing of the connecting slot hole position by the circular pressing plate can be ensured all the time.
In a further optimization of any one of embodiments 2 to 5, in order to improve fastening connection strength of the inner joint body and the outer joint body, a flaring structure is arranged at a port of the inner joint body, an inner fastening structure for pressing and fixedly connecting the inner joint body and the outer joint body is arranged on at least one side of the flaring structure in a group, and in other embodiments, compared with embodiment 1, the second groove-shaped buckle cover can be replaced by a first groove-shaped buckle cover, a connecting long hole is formed in a wall of the outer joint body, the groove-shaped buckle cover is buckled on the outer side of the connecting long hole on the wall in a sealing mode, and the flaring overturning edge is fastened and connected with the outer joint body in an internal operation of the expansion joint.
In the specific embodiment 1 of the bus bridge expansion box body, the bus bridge expansion box body comprises an inner bridge box body and an outer bridge box body, the inner bridge box body is sleeved in the outer bridge box body and can perform expansion and contraction activities, the inner bridge box body and the outer bridge box body are both rectangular cylinder bodies and are connected with corresponding electrical equipment interfaces, a closing structure is arranged on the side face of the opposite wide side of one port of the outer bridge box body, the closing structure is provided with an outward turned edge which is attached to the wall face of the inner bridge box body, the closing structure is made by stamping forming or welding Z-shaped workpieces, and three first perforations are uniformly arranged on the outward turned edge in parallel.
The inner bridge frame box is characterized in that three first connecting long holes extending along the extending direction are correspondingly formed in the side faces of the opposite wide sides of the inner bridge frame box, first bolts penetrate through the first through holes and the first connecting long holes in sequence, first sliding blocks are connected with the inner side of the inner bridge frame box in a threaded fit mode with the first bolts, the first sliding blocks correspond to the nuts, the first sliding blocks are screwed to enable the inner bridge frame box to be pressed and fixed with the outward turning edges through screwing of the first bolts, and fixed connection between the inner bridge frame box and the outer bridge frame box is achieved. In order to solve the problem of tightness caused by the arrangement of the first connecting long holes on the inner bridge frame box body, a first groove-shaped buckle cover is arranged on the inner wall of the inner bridge frame box body in a sealing and buckling manner, the first groove-shaped buckle cover is in anti-rotation fit with the first sliding block, and the inner bridge frame box body is isolated from the external environment through the first groove-shaped buckle cover.
In order to enhance the connection strength of the telescopic box body after the fastening, a flaring overturning edge is arranged on the side surface of the opposite wide edge of one port of the inner bridge box body, the flaring overturning edge can also be manufactured by stamping forming or welding a Z-shaped workpiece, and three second perforations are uniformly arranged on the flaring overturning edge in parallel. The inner side wall of the outer bridge frame box body is buckled and is provided with a second groove type buckle cover, a second connecting long hole extending along the telescopic direction is formed in the groove bottom surface of the second groove type buckle cover corresponding to the second through hole, a second bolt is sequentially arranged through the second through hole and the second connecting long hole, the second groove type buckle cover is stopped and screwed with a second sliding block, the second sliding block corresponds to the effect of a nut, the groove bottom surface of the second groove type buckle cover and the flaring overturning edge are pressed and fixed through screwing the second bolt, unnecessary telescopic movement or stress bending deformation of the telescopic box body is avoided, and therefore the hidden danger of short circuit of a bus conductor caused by the change of the bus leakage distance is eliminated.
In the specific embodiment 2 of the bus bridge expansion box of the present utility model, as shown in fig. 8 to 10, as a further optimization of the specific embodiment 1, in order to facilitate adjustment of the installation distance of the outer bridge box, the other end of the outer bridge box is provided with a flared mouth with an outward enlarged opening, so as to realize seamless butt joint.
Other embodiments of the telescopic case of the bus bridge of the present utility model are the same as the embodiments of the corresponding structures in the telescopic joint of the telescopic case of the bus bridge of the present utility model, and will not be described herein again.
Claims (10)
1. The utility model provides a busbar bridge box telescopic joint, includes the interior festival body and the outer festival body that mutually flexible suit is in the same place, and the port department of the outer festival body is equipped with the binding off structure that is used for to interior festival body sliding support, and binding off structure seals the cooperation with the lateral surface of the interior festival body, characterized by is provided with in groups on at least one edge of binding off structure department and is used for compressing tightly fixed connection's fastening structure with interior festival body and outer festival body, fastening structure includes the connection slot hole that extends along the flexible direction that corresponds the perforation position setting on the edge setting of binding off structure has perforation valgus structure, interior festival body to and wear the fastener of dress in perforation and connection slot hole.
2. The bus bridge box expansion joint of claim 1, wherein said everting structure is an everting nose or edge disposed on the closing structure and parallel to the outer side of the inner joint body.
3. The bus bridge box expansion joint of claim 1 wherein said fasteners are threaded bolt and nut.
4. A bus bridge box expansion joint according to any of claims 1 to 3, wherein a groove type buckle cover is arranged on the inner wall of the inner joint body in a sealing and buckling manner.
5. A bus bridge box expansion joint according to any one of claims 1 to 3, wherein the port of the inner joint body is provided with a flaring structure, and at least one side of the flaring structure is provided with an inner fastening structure for compressing and fixedly connecting the inner joint body and the outer joint body.
6. The utility model provides a flexible box of generating line crane span structure, its characterized in that, including the interior crane span structure box and the outer crane span structure box that mutually flexible suit together, the port department of outer crane span structure box is equipped with the binding off structure that is used for the sliding support to interior crane span structure box, and the binding off structure seals the cooperation with the lateral surface of interior crane span structure box, its characterized in that is provided with in groups on at least one edge of binding off structure department and is used for compressing tightly fixed connection's fastening structure with interior crane span structure box, fastening structure includes the connection slot hole that has the perforation to turn up the structure, correspond the perforation position setting on the interior crane span structure box along flexible direction extension on the edge of binding off structure to wear to adorn the fastener in perforation and connection slot hole.
7. The bus bridge expansion box of claim 6, wherein said everting structure is an everting nose or edge disposed on the closing structure parallel to the outer side of the inner bridge box.
8. The bus bridge expansion box of claim 6 wherein said fasteners are threaded bolt and nut.
9. The bus bridge expansion box of any of claims 6 to 8, wherein a groove-shaped buckle cover is sealed and buckled on the inner wall of said inner bridge box.
10. The bus bridge expansion box of any of claims 6 to 8, wherein the port of said inner bridge box is provided with a flaring structure, and at least one side of the flaring structure is provided with an inner fastening structure for compressing and fixedly connecting the inner bridge box and the outer bridge box.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810479317.6A CN108512169B (en) | 2018-05-18 | 2018-05-18 | Bus bridge frame box expansion joint and bus bridge frame expansion box |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810479317.6A CN108512169B (en) | 2018-05-18 | 2018-05-18 | Bus bridge frame box expansion joint and bus bridge frame expansion box |
Publications (2)
| Publication Number | Publication Date |
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| CN108512169A CN108512169A (en) | 2018-09-07 |
| CN108512169B true CN108512169B (en) | 2024-02-20 |
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| Application Number | Title | Priority Date | Filing Date |
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| CN201810479317.6A Active CN108512169B (en) | 2018-05-18 | 2018-05-18 | Bus bridge frame box expansion joint and bus bridge frame expansion box |
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| CN (1) | CN108512169B (en) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113555827B (en) * | 2021-07-17 | 2022-11-29 | 中铁六局集团电务工程有限公司 | Electric wire bridge for electric automation |
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| WO2012038177A1 (en) * | 2010-09-21 | 2012-03-29 | Siemens Aktiengesellschaft | Busbar trunking unit and busbar trunking system comprising a busbar trunking unit |
| CN201821009U (en) * | 2010-10-11 | 2011-05-04 | 上海纳杰电气成套有限公司 | Baseplate connection strengthening rib for retractable 10kv switchgear busbar bridge box |
| CN204012532U (en) * | 2014-06-06 | 2014-12-10 | 淮南联合大学 | A kind of for connecting the expansion joint between channel-type cable bridge |
| CN205039485U (en) * | 2015-10-20 | 2016-02-17 | 山东泰开箱变有限公司 | High pressure enclosed bus bridge telescopic structure |
| CN105262024A (en) * | 2015-11-10 | 2016-01-20 | 江苏银佳企业集团有限公司 | High-pressure common box bus expansion joint with protection performance |
| CN105896419A (en) * | 2016-06-01 | 2016-08-24 | 江苏大浪电气制造有限公司 | Telescopic cable bridge |
| CN107370093A (en) * | 2017-08-15 | 2017-11-21 | 上海涵嘉电气设备有限公司 | A kind of scalable crane span structure of low-voltage complete switch equipment pin-connected panel |
| CN208257343U (en) * | 2018-05-18 | 2018-12-18 | 河南森源电气股份有限公司 | A kind of bus bridge frame cabinet telescopic joint and bus bridge frame retractable wagon |
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