CN109693582B - Expansion joint - Google Patents
Expansion joint Download PDFInfo
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- CN109693582B CN109693582B CN201710985462.7A CN201710985462A CN109693582B CN 109693582 B CN109693582 B CN 109693582B CN 201710985462 A CN201710985462 A CN 201710985462A CN 109693582 B CN109693582 B CN 109693582B
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- slide rail
- clamping plate
- expansion joint
- connecting body
- connector
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B60—VEHICLES IN GENERAL
- B60M—POWER SUPPLY LINES, AND DEVICES ALONG RAILS, FOR ELECTRICALLY- PROPELLED VEHICLES
- B60M1/00—Power supply lines for contact with collector on vehicle
- B60M1/30—Power rails
- B60M1/305—Joints
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Machines For Laying And Maintaining Railways (AREA)
- Current-Collector Devices For Electrically Propelled Vehicles (AREA)
Abstract
The invention discloses an expansion joint which comprises a left sliding rail, a right sliding rail, a first clamping plate, a second clamping plate, a connecting body, a first current connector, a second current connector and an insulating support, wherein the left sliding rail and the right sliding rail can slide relatively, and the first clamping plate and the second clamping plate are opposite in front and back and clamp the left sliding rail and the right sliding rail; the connecting body is respectively connected with the left sliding rail and the right sliding rail, and the connecting body is relatively and fixedly connected with the first clamping plate and the second clamping plate; the first current connector is respectively connected with the left sliding rail and the connecting body and is electrically communicated with the left sliding rail and the connecting body; the second current connector is respectively connected with the right slide rail and the connector and is electrically conducted; the insulating support is connected with the connecting body for supporting the connecting body. According to the expansion joint provided by the embodiment of the invention, the insulating support connected with the connecting body is arranged, so that the structural strength and stability of the whole expansion structure are improved.
Description
Technical Field
The invention relates to the technical field of rail trains, in particular to an expansion joint.
Background
The expansion joint of the related technology is installed by adopting a three-section type contact rail, and is mechanically anchored and connected into a whole by an aluminum alloy clamping plate, the current connecting device is made of pure copper plate silver plating for electric current carrying, and the connecting mechanism is mechanically connected by a soft copper belt. The current-carrying copper plate connected with the current connector is a rigid structure, if the current-carrying copper plate is arranged on the side contact curve section, the anchoring clamping plate of the elastic deformation expansion joint of the conductive rail can be tightly attached to the left and right sliding rails, so that the expansion joint is clamped, and the current-carrying copper plate is not suitable for the installation of the side contact current-receiving curve section; in addition, the expansion joint is arranged between the two insulating supports without support, so that the expansion joint is not beneficial to leveling due to self weight droop and internal force generated by a contact rail of a curve line section.
Disclosure of Invention
The present invention is directed to solving, at least to some extent, one of the technical problems in the related art. To this end, an object of the invention is to propose an expansion joint which is structurally strong and stable.
According to the expansion joint provided by the embodiment of the invention, the expansion joint comprises a left slide rail, a right slide rail, a first clamping plate, a second clamping plate, a connecting body, a first current connector, a second current connector and an insulating support, wherein the left slide rail and the right slide rail can relatively slide, and the first clamping plate and the second clamping plate are opposite in front and back and clamp the left slide rail and the right slide rail; the connecting body is respectively connected with the left sliding rail and the right sliding rail, and the connecting body is relatively and fixedly connected with the first clamping plate and the second clamping plate; the first current connector is respectively connected with the left slide rail and the connector and is electrically conducted; the second current connector is respectively connected with the right slide rail and the connector and is electrically conducted; the insulating support is connected with the connecting body and is used for supporting the connecting body.
According to the expansion joint provided by the embodiment of the invention, the insulating support connected with the connecting body is arranged, so that the structural strength and stability of the whole expansion structure are improved.
In addition, the expansion joint according to the above embodiment of the present invention may further have the following additional technical features:
in one embodiment of the invention, the insulating support is attached to the bottom surface of the connecting body by a screw.
In an embodiment of the present invention, waist cavities are disposed on both front and rear sides of the left slide rail and both front and rear sides of the right slide rail, and the first clamping plate and the second clamping plate are provided with protrusions inserted into the corresponding waist cavities.
In one embodiment of the invention, the first splint and the second splint each comprise: a plate portion, both end portions on a surface of the plate portion being provided with the convex portion.
In one embodiment of the invention, the first clamping plate and the second clamping plate are both formed by machining the fishplates through wire cutting.
In one embodiment of the invention, the left sliding rail is locked with the first clamping plate and the second clamping plate by bolts, and the left sliding rail can move left and right relative to the first clamping plate and the second clamping plate; and/or the right sliding rail is locked with the first clamping plate and the second clamping plate through bolts, and the right sliding rail can move left and right relative to the first clamping plate and the second clamping plate.
In one embodiment of the present invention, the first clamping plate and the second clamping plate are respectively fastened with the connecting body by bolts; or the first clamping plate and the second clamping plate are respectively welded with the connecting body.
In an embodiment of the present invention, a dovetail rail is disposed on a surface of the connecting body, a first dovetail groove is disposed on the left slide rail, a second dovetail groove is disposed on the right slide rail, and both the first dovetail groove and the second dovetail groove are matched with the dovetail rail.
In an embodiment of the invention, the surfaces of the connecting body on the two sides of the dovetail rail are wedge-shaped and inclined upwards in the direction away from the dovetail rail, the surfaces of the left slide rail on the two sides of the first dovetail groove are wedge-shaped and adapted to the connecting body, and the surfaces of the right slide rail on the two sides of the second dovetail groove are wedge-shaped and adapted to the connecting body.
In one embodiment of the invention, the left slide rail and the right slide rail are both machined from conductive rails.
In one embodiment of the invention, the left slide rail and the right slide rail are respectively provided with a long waist hole for connecting the first clamping plate and the second clamping plate.
In an embodiment of the present invention, a support sleeve is disposed in the long waist hole, and the first clamping plate and the second clamping plate respectively press two ends of the support sleeve.
In one embodiment of the invention, the length of the long waist hole is not less than 95mm, and the expansion adjustment amount of the left slide rail and the right slide rail is not less than 150 mm.
In one embodiment of the invention, the opposite end surfaces of the left slide rail and the right slide rail are both cut into inclined surfaces with an included angle of not more than 15 degrees with the normal line of the other end surface.
In an embodiment of the present invention, the left slide rail and the right slide rail are arranged on the left and right sides of the connecting body in a central symmetry manner.
In an embodiment of the present invention, conductive grease is applied to the joint surfaces of the connecting body and the left and right slide rails, the joint surfaces of the first clamping plate and the left and right slide rails, and the joint surfaces of the second clamping plate and the left and right slide rails.
In one embodiment of the invention, the connector is an aluminum alloy extrusion.
In an embodiment of the invention, the first current connector is connected to the bottom surface of the connecting body and the bottom surface of the left slide rail, and the second current connector is connected to the bottom surface of the connecting body and the bottom surface of the right slide rail.
In one embodiment of the invention, the first current connector and the second current connector are each formed by crimping a T2 copper foil having a thickness in a range of 0.08mm to 1mm, and the first current connector and the second current connector have a width of not less than 100mm, a thickness of not more than 12mm, and a current-carrying capacity of not less than 2200A.
In an embodiment of the invention, a short copper-aluminum composite plate is arranged between the first current connector and the connecting body, a long copper-aluminum composite plate is arranged between the left sliding rail and the connecting body, a short copper-aluminum composite plate is arranged between the second current connector and the connecting body, and a long copper-aluminum composite plate is arranged between the right sliding rail and the connecting body, wherein both the short copper-aluminum composite plate and the long copper-aluminum composite plate are respectively provided with an aluminum layer on one surface and a copper layer on the other surface, and the copper layers are in contact with the first current connector or the second current connector.
In an embodiment of the present invention, the width of the long copper-aluminum composite plate is not less than 100mm, and the length of the long copper-aluminum composite plate is not less than 160mm, and the width of the short copper-aluminum composite plate is not less than 100mm, and the length of the short copper-aluminum composite plate is not less than 85 mm.
In an embodiment of the invention, the first current connectors are respectively bolted with the bottom surface of the connecting body and the bottom surface of the left slide rail, the second current connectors are respectively bolted with the bottom surface of the connecting body and the bottom surface of the right slide rail, and stainless steel pressure plates are respectively arranged between the first current connectors and the corresponding screw heads and between the second current connectors and the corresponding screw heads.
In one embodiment of the invention, the first current connector and the second current connector both adopt a soft copper ring structure.
In one embodiment of the invention, the first current connector and the second current connector are each wound from a T2 copper foil having a thickness in the range of 0.08mm to 0.1 mm.
In an embodiment of the invention, the front side wall and the rear side wall of the first current connector and the front side wall and the rear side wall of the second current connector are clamped by an aluminum plate located on the inner side and a stainless steel plate located on the outer side, the bottom surface of the connecting body and the bottom surface of the left slide rail are respectively provided with an aluminum block corresponding to the aluminum plate of the front side wall and the aluminum plate of the rear side wall of the first current connector, the bottom surface of the connecting body and the bottom surface of the right slide rail are respectively provided with an aluminum block corresponding to the aluminum plate of the front side wall and the aluminum plate of the rear side wall of the second current connector, and the corresponding aluminum blocks, aluminum plates and stainless steel plates are connected through bolts.
Drawings
FIG. 1 is a schematic view of an expansion joint according to one embodiment of the present invention.
Figure 2 is a schematic view of an expansion joint of one embodiment of the invention in another orientation.
FIG. 3 is a schematic view of the linker of FIG. 1.
Fig. 4 is a schematic view of the first clamping plate of fig. 1.
Fig. 5 is a schematic view of the left slide rail of fig. 1.
Fig. 6 is a schematic view of the left slide rail, the first clamping plate and the second clamping plate in fig. 1.
Fig. 7 is a schematic view of the left slide rail of fig. 1 engaged with a connecting body.
Fig. 8 is a schematic view of the right slide rail of fig. 1 engaged with a connector.
Figure 9 is a schematic view of another example expansion joint of the present invention.
Reference numerals: the expansion joint 100, the left slide rail 11, the right slide rail 12, the first clamping plate 21, the second clamping plate 22, the connecting body 3, the first current connector 41, the second current connector 42, the insulating support 5, the waist cavity 101, the convex part 201, the plate part 202, the dovetail rail 301, the first dovetail groove 1021, the second dovetail groove 1022, the support sleeve 104, the aluminum block 401, the stainless steel plate 402 and the aluminum plate 403.
Detailed Description
Reference will now be made in detail to embodiments of the present invention, examples of which are illustrated in the accompanying drawings, wherein like or similar reference numerals refer to the same or similar elements or elements having the same or similar function throughout. The embodiments described below with reference to the drawings are illustrative and intended to be illustrative of the invention and are not to be construed as limiting the invention.
Referring to fig. 1 and 2, according to the expansion joint 100 of the embodiment of the present invention, the expansion joint 100 includes a left slide rail 11, a right slide rail 12, a first clamping plate 21, a second clamping plate 22, a connecting body 3, a first current connector 41, a second current connector 42, and an insulating support 5.
The left slide rail 11 and the right slide rail 12 are relatively slidable, and the first clamping plate 21 and the second clamping plate 22 are front-back opposite and clamp the left slide rail 11 and the right slide rail 12. The connecting body 3 is connected with the left slide rail 11 and the right slide rail 12, respectively, and the connecting body 3 is relatively fixedly connected with the first clamping plate 21 and the second clamping plate 22. The first current connector 41 is electrically connected to the left slide rail 11 and the connecting body 3, respectively. The second current connector 42 is electrically connected to the right slide rail 12 and the connector 3, respectively. An insulating support 5 is connected to the connecting body 3 for supporting the connecting body 3.
According to the expansion joint 100 of the embodiment of the present invention, the insulating support 5 connected to the connection body 3 is provided, thereby improving the structural strength and stability of the entire expansion structure.
In one embodiment of the present invention, the insulating support 5 is attached to the bottom surface of the connecting body 3 by screws.
Wherein, first splint 21 and second splint 22 can be respectively through three screw fastening on connector 3, left side slide rail 11, right side slide rail 12 becomes central symmetry and arranges in connector 3 both sides, left side slide rail 11, right side slide rail 12 are being held to first splint 21 and second splint 22, and through two sets of bolt fastening, first current connector 41, second current connector 42 can be respectively through two screw connections in connector 3 bottom surface and slide rail (left side slide rail 11, right side slide rail 12) bottom surface, insulating support 5 can be through four screw connections in connector 3 bottom surface.
Referring to fig. 5 and 6, in an embodiment of the present invention, waist cavities 101 are formed in front and rear sides of the left slide rail 11 and front and rear sides of the right slide rail 12, and protrusions 201 inserted into the corresponding waist cavities 101 are formed on the first clamping plate 21 and the second clamping plate 22. Thereby improving the stability of the clamping plate and the sliding rail.
Further, as shown in fig. 4, each of the first clamping plate 21 and the second clamping plate 22 includes: plate portion 202, both end portions on the surface of plate portion 202 are provided with convex portions 201.
Advantageously, both the first clamping plate 21 and the second clamping plate 22 are formed by wire cutting the fishplates.
Preferably, as shown in fig. 6, the left slide rail 11 is locked with the first clamping plate 21 and the second clamping plate 22 by bolts, and the left slide rail 11 is movable left and right relative to the first clamping plate 21 and the second clamping plate 22; and/or the right slide rail 12 and the first clamping plate 21 and the second clamping plate 22 are locked by bolts, and the right slide rail 12 can move left and right relative to the first clamping plate 21 and the second clamping plate 22.
The clamping plates (the first clamping plate 21 and the second clamping plate 22) are formed by cutting and processing common fishplates connected with conductor rails by wires, wherein screws penetrate through holes in the clamping plates to fasten the clamping plates on the connecting body 3, and bolts fasten the two opposite clamping plates (the first clamping plate 21 and the second clamping plate 22) through countersunk holes in the clamping plates; the wedge-shaped edges (convex parts 201) on the clamping plates are used for matching with the web of the slide rail (the left slide rail 11 and the right slide rail 12), so that 5 degrees of freedom of the slide rail are limited, and only the degree of freedom of the slide rail sliding along the longitudinal direction (X direction) of the slide rail is reserved.
In one embodiment of the present invention, the first clamping plate 21 and the second clamping plate 22 are respectively fastened to the connecting body 3 by bolts; or the first clamping plate 21 and the second clamping plate 22 are respectively welded with the connecting body 3.
Referring to fig. 3, 7 and 8, in an embodiment of the present invention, a dovetail rail 301 is disposed on a surface of the connecting body 3, a first dovetail groove 1021 is disposed on the left slide rail 11, a second dovetail groove 1022 is disposed on the right slide rail 12, and the first dovetail groove 1021 and the second dovetail groove 1022 are both matched with the dovetail rail 301.
The dovetail rail 301 extends in the left-right direction, and on a cross section perpendicular to the left-right direction, the dovetail rail 301 is in a shape in which the size of the free end is large and the size of the fixed end is small, and the shape of the dovetail grooves (the first dovetail groove and the second dovetail groove) is adapted to the shape of the dovetail rail.
Wherein, dovetail grooves are arranged on the upper surface and the lower surface of the connecting body 3 and are used for matching with the left slide rail and the right slide rail. Dovetail rails may also be provided on the upper surface (or lower surface) of the connecting body 3 and engaged with dovetail grooves on the left and right rails.
The dovetail rail 301 is matched with the dovetail groove, so that 5 degrees of freedom of the flow receiving surface of the sliding rail are limited, and only the degree of freedom of the sliding rail sliding along the longitudinal direction (X direction) of the sliding rail is reserved, so that the end part of the sliding rail is stably supported, the heights of the left flow receiving surface 101 and the right flow receiving surface 101 are kept consistent for a long time, and the collector shoe can pass through the expansion joint 100 smoothly without impact;
referring to fig. 7 and 8, in an embodiment of the present invention, surfaces of the connecting body 3 on both sides of the dovetail rail 301 are wedge-shaped and inclined upward in a direction away from the dovetail rail 301, surfaces of the left slide rail 11 on both sides of the first dovetail groove 1021 are wedge-shaped and adapted to the connecting body 3, and surfaces of the right slide rail 12 on both sides of the second dovetail groove 1022 are wedge-shaped and adapted to the connecting body 3.
The wedge-shaped surface on the connector 3 is matched with the wedge-shaped groove at the rail web of the slide rail, and the threaded hole on the side surface (front and back side surfaces) of the connector 3 is used for connecting clamping plates (a first clamping plate 21 and a second clamping plate 22). The transverse threaded hole on the bottom surface of the connecting body 3 is used for connecting the insulating support 5. Threaded holes longitudinally in the bottom surface of the connecting body 3 are used for the current connectors (the first current connector 41 and the second current connector 42).
In one embodiment of the present invention, the left slide rail 11 and the right slide rail 12 are both made of conductive rail.
Further, referring to fig. 6, the left slide rail 11 and the right slide rail 12 are each provided with a long waist hole for connecting the first clamping plate 21 and the second clamping plate 22.
As shown in fig. 6, a support sleeve 104 is advantageously arranged in the long waist hole, and the first clamping plate 21 and the second clamping plate 22 respectively press against two ends of the support sleeve 104.
The support sleeve 104 is made of stainless steel and is used for supporting the first clamping plate 21 and the second clamping plate 22, so as to ensure that a necessary gap exists between the sliding rail and the clamping plates to facilitate the sliding of the sliding rail on the clamping plates, and the length of the support sleeve 104 is determined according to a required gap between the sliding rail and the clamping plates.
Preferably, the length of the long waist hole is not less than 95mm, and the expansion adjustment amount of the left slide rail 11 and the right slide rail 12 is not less than 150 mm.
Further, referring to fig. 1, 2 and 5, the opposite end surfaces of the left slide rail 11 and the right slide rail 12 are each cut into an inclined surface having an angle of not more than 15 ° with respect to the normal of the other end surface. For example, in the figure, the right end surface of the left slide rail 11 and the left end surface of the right slide rail 12 are cut into inclined surfaces.
Advantageously, with reference to fig. 1 and 2, the left slide rail 11 and the right slide rail 12 are arranged on the left and right sides of the connecting body 3 in a central symmetry.
The slide rail (left slide rail 11, right slide rail 12) is formed by ordinary conductor rail through machine tooling, and the dovetail on it matches with forked tail rail 301 on the connector 3, and the length in long waist hole is not less than 95mm to guarantee that expansion joint 100's adjustment volume is not less than 150mm, slide rail bottom surface screw hole is used for connecting the current connector. One end of the sliding rail is cut into an inclined plane, an acute angle formed by the inclined plane and a normal line of the other end face of the sliding rail is not more than 15 degrees, and the cut inclined plane can enable the collector shoe to smoothly pass through a gap between the left sliding rail and the right sliding rail.
In an embodiment of the present invention, conductive grease is applied to the respective bonding surfaces of the connecting body 3 and the left and right rails 11 and 12, the bonding surfaces of the first clamping plate 21 and the left and right rails 11 and 12, and the bonding surfaces of the second clamping plate 22 and the left and right rails 11 and 12.
Conductive grease is smeared between each joint surface of the connector 3 and the slide rail and between each joint surface of the clamping plate and the slide rail, so that on one hand, the conductivity between the joint surfaces is increased, and on the other hand, the lubricating effect is achieved, so that the slide rail can slide between the clamping plates of the slide rail more smoothly.
In one embodiment of the invention, the connector 3 is an aluminum alloy extrusion.
Further, the connector 3 is an aluminum alloy 6063 (T6) extrusion molding.
Referring to fig. 1 and 2, in one embodiment of the present invention, a first current connector 41 is connected to the bottom surface of the connecting body 3 and the bottom surface of the left slide rail 11, and a second current connector 42 is connected to the bottom surface of the connecting body 3 and the bottom surface of the right slide rail 12.
Further, the first current connector 41 and the second current connector 42 are each formed by crimping a T2 copper foil having a thickness in the range of 0.08mm to 1mm, and the first current connector 41 and the second current connector 42 have a width of not less than 100mm, a thickness of not more than 12mm, and a current-carrying capacity of not less than 2200A.
Advantageously, a short copper-aluminum composite plate is arranged between the first current connector 41 and the connector 3, a long copper-aluminum composite plate is arranged between the left slide rail 11, a short copper-aluminum composite plate is arranged between the second current connector 42 and the connector 3, a long copper-aluminum composite plate is arranged between the right slide rail 12, the short copper-aluminum composite plate and the long copper-aluminum composite plate are aluminum layers on one side and copper layers on the other side, and the copper layers are in contact with the first current connector or the second current connector.
Preferably, the width of the long copper-aluminum composite plate is not less than 100mm, the length of the long copper-aluminum composite plate is not less than 160mm, and the width of the short copper-aluminum composite plate is not less than 100mm, and the length of the short copper-aluminum composite plate is not less than 85 mm.
Further, the first current connector 41 is respectively in bolt connection with the bottom surface of the connecting body 3 and the bottom surface of the left slide rail 11, the second current connector 42 is respectively in bolt connection with the bottom surface of the connecting body 3 and the bottom surface of the right slide rail 12, and stainless steel pressing plates are respectively arranged between the first current connector and the corresponding screw head and between the second current connector and the corresponding screw head.
Specifically, the current connectors (the first current connector 41 and the second current connector 42) are formed by crimping a T2 copper foil having a thickness of 1mm or 0.08mm, a width of not less than 100mm, a thickness of not more than 12mm and a current-carrying capacity of not less than 2200A. The two surfaces of the long copper-aluminum composite board are respectively provided with an aluminum layer and a copper layer, the aluminum layer is in contact with the bottom surface of the connecting block, the copper layer is in contact with the corresponding current connector, the width of the copper layer is 100mm, and the length of the copper layer is not less than 160mm, so that a gap formed between the sliding rail and the connecting body 3 after the sliding rail slides outwards is covered, the invasion of impurities is avoided, the two surfaces of the short copper-aluminum composite board are respectively provided with the aluminum layer and the copper layer, the aluminum layer is in contact with the bottom surface of the sliding rail, the copper layer is in contact with the current connector, the width of the copper layer is 100mm, and the length of the copper layer is 85 mm; the stainless steel pressing plate 403 is a 304 stainless steel plate 402, which is used to compress the current connector, the copper-aluminum composite plate, the connecting block and the sliding rail respectively, so that the three are attached more tightly.
In one embodiment of the present invention, the first current connector 41 and the second current connector 42 each employ a soft copper ring structure.
In one embodiment of the present invention, the first current connector 41 and the second current connector 42 are each wound from T2 copper foil having a thickness in the range of 0.08mm to 0.1 mm.
As shown in fig. 9, in an embodiment of the present invention, the front and rear sidewalls of the first current connector 41 and the front and rear sidewalls of the second current connector 42 are clamped by an aluminum plate 403 located on the inner side and a stainless steel plate 402 located on the outer side, the bottom surface of the connecting body 3 and the bottom surface of the left slide rail 11 are respectively provided with an aluminum block 401 corresponding to the aluminum plate 403 of the front and rear sidewalls of the first current connector, the bottom surface of the connecting body 3 and the bottom surface of the right slide rail 12 are respectively provided with an aluminum block 401 corresponding to the aluminum plate 403 of the front and rear sidewalls of the second current connector, and the corresponding aluminum block 401, aluminum plate 403 and stainless steel plate 402 are bolted.
For example, the first current connector 41 has an aluminum plate 403 on the inner side of the front wall and a stainless steel plate 402 on the outer side, and the first current connector 41 has an aluminum block 401 on the inner side of the front wall, the aluminum block 401 is welded to the bottom surface of the left slide rail 11, and the corresponding aluminum block 401, stainless steel plate 402 and aluminum plate 403 are bolted together.
An aluminum plate 403 is arranged on the inner side of the rear side wall of the first current connector 41, a stainless steel plate 402 is arranged on the outer side of the rear side wall of the first current connector 41, an aluminum block 401 is arranged on the inner side of the rear wall of the first current connector 41, the aluminum block 401 is welded with the bottom surface of the connector 3, and the corresponding aluminum block 401, the stainless steel plate 402 and the aluminum plate 403 are connected together through bolts.
An aluminum plate 403 and a stainless steel plate 402 are arranged on the inner side and the outer side of the front side wall of the second current connector 42, an aluminum block 401 is arranged on the inner side of the front wall of the second current connector 42, the aluminum block 401 is welded with the bottom surface of the right slide rail 12, and the corresponding aluminum block 401, the stainless steel plate 402 and the aluminum plate 403 are connected together through bolts.
An aluminum plate 403 is arranged on the inner side of the rear side wall of the second current connector 42, a stainless steel plate 402 is arranged on the outer side of the rear side wall of the second current connector 42, an aluminum block 401 is arranged on the inner side of the rear wall of the second current connector 42, the aluminum block 401 is welded with the bottom surface of the connector 3, and the corresponding aluminum block 401, stainless steel plate 402 and aluminum plate 403 are connected together through bolts.
Specifically, fig. 9 illustrates another current connector structure of the present invention. The current connector adopts a soft copper ring structure, a welding aluminum block 401 is respectively oppositely welded on the bottom surfaces of the connector 3 and the slide rail, the current connector is clamped by an aluminum plate 403 and a stainless steel plate 402, and the aluminum plate 403, the current connector and the stainless steel plate 402 are fastened on the welding aluminum block 401 by screws. Wherein the current connector is formed by winding a T2 copper foil with the thickness of 0.1 or 0.08 mm.
The I-shaped conductor rail middle support type expansion joint 100 is designed, the whole weight is borne by the insulating support 5, and the sliding rail cannot slide unsmoothly due to self-weight sagging of the sliding rail; the expansion joint 100 can ensure that the end part of the sliding rail obtains stable support, the heights of the left and right current-receiving surfaces are kept consistent, so that the collector shoe can pass through the expansion joint 100 smoothly without impact, the expansion joint 100 is not only suitable for installation of a straight line segment but also suitable for installation of a curve segment under the condition of side contact current receiving, and the sliding rail cannot be blocked at the curve segment.
In addition, the clamping plate and the connecting body 3 can be connected through screws, and the sliding rail clamping plate can be welded on the connecting body 3.
In the description herein, references to the description of the term "one embodiment," "some embodiments," "an example," "a specific example," or "some examples," etc., mean that a particular feature, structure, material, or characteristic described in connection with the embodiment or example is included in at least one embodiment or example of the invention. In this specification, the schematic representations of the terms used above are not necessarily intended to refer to the same embodiment or example. Furthermore, the particular features, structures, materials, or characteristics described may be combined in any suitable manner in any one or more embodiments or examples. Furthermore, various embodiments or examples and features of different embodiments or examples described in this specification can be combined and combined by one skilled in the art without contradiction.
Although embodiments of the present invention have been shown and described above, it is understood that the above embodiments are exemplary and should not be construed as limiting the present invention, and that variations, modifications, substitutions and alterations can be made to the above embodiments by those of ordinary skill in the art within the scope of the present invention.
Claims (22)
1. The utility model provides an expansion joint, expansion joint includes left slide rail, right slide rail, first splint and second splint, left side slide rail with right slide rail is slidable relatively, first splint with relative and centre gripping around the second splint left side slide rail and right slide rail, its characterized in that, expansion joint still includes:
the connecting body is respectively connected with the left sliding rail and the right sliding rail, and the connecting body is relatively and fixedly connected with the first clamping plate and the second clamping plate;
the first current connector is respectively connected with the left slide rail and the connector and is electrically conducted;
the second current connector is respectively connected with the right slide rail and the connector and is electrically conducted;
an insulating support connected to the connector for supporting the connector,
wherein, both sides all are equipped with the waist die cavity around left side slide rail and the front and back both sides of right side slide rail, be equipped with on first splint and the second splint and insert corresponding convex part in the waist die cavity, the surface of connector is equipped with the forked tail rail, be equipped with first dovetail on the left side slide rail, be equipped with the second dovetail on the right side slide rail, first dovetail with the second dovetail all with the forked tail rail cooperation, left side slide rail includes first half and lower half, first half and the lower half link to each other from top to bottom to construct out the waist die cavity between first half and the lower half, the tip of first half stretches out the lower half, and the first dovetail is constructed out to the downside of the tip of first half,
the left sliding rail, the first clamping plate and the second clamping plate are locked by bolts, and the left sliding rail can move left and right relative to the first clamping plate and the second clamping plate; and/or the right sliding rail is locked with the first clamping plate and the second clamping plate through bolts, and the right sliding rail can move left and right relative to the first clamping plate and the second clamping plate.
2. The expansion joint according to claim 1, wherein the insulating support is attached to the bottom surface of the connecting body by a screw.
3. The expansion joint according to claim 1, wherein said first and second jaws each comprise:
a plate portion, both end portions on a surface of the plate portion being provided with the convex portion.
4. The expansion joint according to claim 1, wherein said first and second jaws are each formed by wire cutting a fishplate.
5. The expansion joint according to claim 1, wherein said first clamping plate and said second clamping plate are respectively fastened with said connecting body by bolts; or the first clamping plate and the second clamping plate are respectively welded with the connecting body.
6. The expansion joint according to claim 1, wherein surfaces of the connecting body on both sides of the dovetail rail are wedge-shaped and inclined upward in a direction away from the dovetail rail, surfaces of the left slide rail on both sides of the first dovetail groove are wedge-shaped and adapted to the connecting body, and surfaces of the right slide rail on both sides of the second dovetail groove are wedge-shaped and adapted to the connecting body.
7. The expansion joint according to claim 1, wherein the left and right rails are each machined from a conductive rail.
8. The expansion joint as claimed in claim 1, wherein said left and right rails are each provided with a long waist hole for connecting said first and second clamping plates.
9. The expansion joint according to claim 8, wherein a support sleeve is provided in the long waist hole, and the first clamping plate and the second clamping plate respectively press against both ends of the support sleeve.
10. The expansion joint as claimed in claim 8, wherein the length of the long waist hole is not less than 95mm, and the expansion adjustment amount of the left and right slide rails is not less than 150 mm.
11. The expansion joint according to claim 1, wherein the opposing end faces of the left and right slide rails are each cut to a slope having an angle of no more than 15 ° to the normal of the other end face.
12. The expansion joint according to claim 1, wherein the left slide rail and the right slide rail are arranged on left and right sides of the connecting body in a central symmetry.
13. The expansion joint according to any one of claims 1 to 12, wherein conductive grease is applied to each of the engaging surfaces of the connecting body and the left and right rails, the engaging surfaces of the first clamping plate and the left and right rails, and the engaging surfaces of the second clamping plate and the left and right rails.
14. Expansion joint according to any of claims 1-12, wherein the connection body is an aluminium alloy extrusion.
15. The expansion joint of claim 1, wherein the first current connector is connected to the bottom surface of the connecting body and the bottom surface of the left rail, and the second current connector is connected to the bottom surface of the connecting body and the bottom surface of the right rail.
16. The expansion joint according to claim 1, wherein the first and second current connectors are each crimped by a T2 copper foil having a thickness in the range of 0.08mm to 1mm, and the first and second current connectors have a width of not less than 100mm, a thickness of not more than 12mm, and a current-carrying capacity of not less than 2200A.
17. The expansion joint according to claim 1 or 16, wherein a short copper aluminum composite plate is arranged between the first current connector and the connecting body, a long copper aluminum composite plate is arranged between the left sliding rail, a short copper aluminum composite plate is arranged between the second current connector and the connecting body, a long copper aluminum composite plate is arranged between the right sliding rail, both the short copper aluminum composite plate and the long copper aluminum composite plate are aluminum layers on one side and copper layers on the other side, and the copper layers contact the first current connector or the second current connector.
18. The expansion joint as claimed in claim 17, wherein said long copper aluminum composite plate has a width of not less than 100mm and a length of not less than 160mm, and said short copper aluminum composite plate has a width of not less than 100mm and a length of not less than 85 mm.
19. The expansion joint according to claim 1, wherein the first current connectors are respectively bolted to the bottom surface of the connecting body and the bottom surface of the left slide rail, the second current connectors are respectively bolted to the bottom surface of the connecting body and the bottom surface of the right slide rail, and stainless steel pressure plates are respectively arranged between the first current connectors and the corresponding screw heads and between the second current connectors and the corresponding screw heads.
20. The expansion joint according to claim 1, wherein said first and second current connectors each employ a soft copper ring structure.
21. The expansion joint according to claim 20, wherein the first and second current connectors are each wound from T2 copper foil having a thickness in the range of 0.08mm to 0.1 mm.
22. The expansion joint according to claim 20, wherein the front and rear side walls of the first current connector and the front and rear side walls of the second current connector are each clamped by an aluminum plate located inside and a stainless steel plate located outside, the bottom surface of the connector and the bottom surface of the left slide rail are respectively provided with aluminum blocks corresponding to the aluminum plates of the front and rear side walls of the first current connector, the bottom surface of the connector and the bottom surface of the right slide rail are respectively provided with aluminum blocks corresponding to the aluminum plates of the front and rear side walls of the second current connector, and the corresponding aluminum blocks, aluminum plates and stainless steel plates are bolted.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710985462.7A CN109693582B (en) | 2017-10-20 | 2017-10-20 | Expansion joint |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201710985462.7A CN109693582B (en) | 2017-10-20 | 2017-10-20 | Expansion joint |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN109693582A CN109693582A (en) | 2019-04-30 |
| CN109693582B true CN109693582B (en) | 2022-03-18 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201710985462.7A Active CN109693582B (en) | 2017-10-20 | 2017-10-20 | Expansion joint |
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| CN (1) | CN109693582B (en) |
Families Citing this family (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN110834570B (en) * | 2018-08-15 | 2022-09-06 | 比亚迪股份有限公司 | Contact rail assembly of track and track with contact rail assembly |
| CN111231775B (en) * | 2020-03-05 | 2021-08-03 | 北京磁浮交通发展有限公司 | Expansion joint and rail vehicle power supply system |
| CN113459905B (en) * | 2020-03-30 | 2023-10-13 | 比亚迪股份有限公司 | Joint device and conductor rail assembly with same |
| CN112606740A (en) * | 2020-12-31 | 2021-04-06 | 曾鉴 | Connecting structure for contact rail |
Family Cites Families (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101823446B (en) * | 2010-04-28 | 2012-11-07 | 浙江旺隆轨道交通设备有限公司 | Contact rail expansion joint |
| CN102501783B (en) * | 2011-10-25 | 2015-01-14 | 比威(天津)电气化***有限责任公司 | Expansion joint for smooth transition of third rail of subway |
| CN103303164B (en) * | 2013-05-20 | 2016-04-20 | 新誉集团有限公司 | A kind of expansion joint for conductive rail |
| CN203713596U (en) * | 2014-01-16 | 2014-07-16 | 中铁电气化局集团宝鸡器材有限公司 | Steel aluminum contact rail expansion joint |
| DE202015105562U1 (en) * | 2015-10-20 | 2017-01-23 | Rehau Ag + Co. | Expansion connector for busbars |
| CN105742840B (en) * | 2016-03-28 | 2017-07-25 | 湖南华品轨道交通有限公司 | A kind of telescopic connector of jointless |
| CN106809061B (en) * | 2016-12-29 | 2018-03-13 | 比亚迪股份有限公司 | Conductor rail connector expansion pipe component |
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2017
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