A kind of arrangements of electric connection of conductor rail expansion pipe
Technical field
The utility model relates to a kind of electric power system of track traffic elec. vehicle, particularly relates to the conductor rail expansion pipe arrangements of electric connection in the track traffic electric vehicle power supply system, belongs to the power track technical field.
Background technology
Along with developing rapidly of urban track traffic, steel-aluminium composite conducting rail (being called for short the 3rd rail) becomes the first-selection of Feeding System of Urban Rail Transit gradually with its exclusive advantage.
When laying conductor rail, the expansion pipe that can stretch must be installed between adjacent two conductor rails, what occur when varying with temperature to overcome conductor rail expands with heat and contract with cold.It is little that described expansion pipe requires to have contact resistance, good reliability and the characteristic such as easy for installation.
Chinese invention patent ZL201080001092.5, name is called a kind of electric rail connector and discloses a kind of expansion pipe, and it comprises left conductor rail, mid-rail, right conductor rail, support plate, electric conductor and wire; Left conductor rail, four end faces that mid-rail is adjacent with right conductor rail are the inclined-plane that is parallel to each other.The arrangements of electric connection of expansion pipe forms loop in parallel by support plate, electric conductor and wire at left conductor rail and right conductor rail bottom, and its support plate is that aluminum alloy is fixed by welding or riveted joint with left conductor rail and right conductor rail bottom, and electric conductor is copper bar.The expansion pipe of this structure is aspect afterflow, the current-carrying and process on expansion pipe flexible with sliding type and stacked expansion pipe of the same type larger improvement has been arranged.The part but this expansion pipe also comes with some shortcomings when practical application, be specially: (1) copper electric conductor and conductor rail bottom aluminum alloy support plate have larger contact surface, the direct electrical connection of the conductor of unlike material will inevitably produce electrochemical corrosion, and long-term electrochemical corrosion must cause expansion pipe to descend service life.(2) adopt copper electric conductor expensive, what support plate adopted bottom conductor rail simultaneously is bolt connecting mode, thereby theftproof performance and vibrationproof poor-performing.
Summary of the invention
The technical problems to be solved in the utility model is to overcome the deficiencies in the prior art, a kind of afterflow and current-carrying requirement that can not only guarantee expansion pipe is provided, and can reduce production costs, and has the arrangements of electric connection of the conductor rail expansion pipe of good theftproof performance and resistance to shock.
For solving the problems of the technologies described above, the utility model adopts a kind of like this arrangements of electric connection of conductor rail expansion pipe, described conductor rail expansion pipe comprises left conductor rail, mid-rail and right conductor rail, the left side of the right side of described left conductor rail, the both ends of the surface of mid-rail and right conductor rail is the inclined-plane that is parallel to each other, and described arrangements of electric connection comprises aluminium conductive plate and wire; One end of described aluminium conductive plate has a boss portion, the aluminium conductive plate is divided into left aluminium conductive plate and right aluminium conductive plate, the boss portion of left aluminium conductive plate and the bottom of left conductor rail is fixed, right-hand member suspends, the boss portion of right aluminium conductive plate and the bottom of right conductor rail is fixed, left end suspends, described wire is divided into left wire and right wire, the two ends of left wire connect respectively the fixed end of left aluminium conductive plate and the end that suspends of right aluminium conductive plate, the two ends of right wire connect respectively the fixed end of suspend end and the right aluminium conductive plate of left aluminium conductive plate, keep relaxed state after described wire connects.
The utility model also comprises copper to aluminum adapter bar, described copper to aluminum adapter bar is made of metallurgical binding copper coin side and aluminium sheet side together, the two ends of described left wire connect the fixed end of left aluminium conductive plate and the end that suspends of right aluminium conductive plate through copper to aluminum adapter bar respectively, the two ends of right wire connect respectively the fixed end of suspend end and the right aluminium conductive plate of left aluminium conductive plate through copper to aluminum adapter bar, the copper coin side of described copper to aluminum adapter bar contacts with described wire and links to each other, and the aluminium sheet side of described copper to aluminum adapter bar links to each other with the end in contact that suspends with the fixed end of described left and right aluminium conductive plate respectively.
Boss portion and the aluminium conductive plate of described aluminium conductive plate one end are made into integration, the boss portion of described left aluminium conductive plate is captiveed joint with the bottom of left conductor rail by welding or riveted joint, and the boss portion of right aluminium conductive plate is captiveed joint with the bottom of right conductor rail by welding or riveted joint.
Described wire is the copper braid, and the copper braid is fixed by bolt and aluminium conductive plate.
Expansion pipe of the present utility model also comprises fish plate; Web of the rail line of centers at described left conductor rail and right conductor rail is respectively equipped with left Level tune hole and right Level tune hole, web of the rail line of centers in described mid-rail is provided with fixed orifice, described fish plate is installed in the both sides of left conductor rail, mid-rail and the right conductor rail web of the rail by bolt, left Level tune hole, right Level tune hole and fixed orifice, and described fish plate is captiveed joint with mid-rail, with left conductor rail and right conductor rail sliding block joint.
Described fish plate is aluminum alloy materials, and the described bolt that fish plate is installed is stainless steel material.
Described fish plate and bolt participate in the electrical connection of conductor rail.
After adopting said structure, the utlity model has following beneficial effect:
Because the utility model adopts the aluminium conductive plate to substitute support plate of the prior art and copper bar, has reduced simultaneously corresponding bolt fastening structure.Adopt such structure to greatly reduce the productive costs of expansion pipe, afterflow and the current-carrying requirement of expansion pipe have been guaranteed simultaneously, the structure of aluminium conductive plate integral type has improved the resistance to shock of expansion pipe, also just because of the reduction of the structure that has adopted integral type and parts value, make puzzlement user antitheft problem for a long time also obtain solution simultaneously.
By after adding copper to aluminum adapter bar between aluminium conductive plate and the wire, effectively avoided electrochemical corrosion between the two, improved service life and the safety performance of expansion pipe.
The utility model fish plate is installed in the both sides of left conductor rail, mid-rail and the right conductor rail web of the rail by bolt, left Level tune hole, right Level tune hole and fixed orifice, and fish plate captives joint with mid-rail, with left conductor rail and right conductor rail sliding block joint.After adopting such structure, direction flexible when on the one hand left conductor rail and right conductor rail being expanded with heat and contract with cold has further guaranteed afterflow and the current-carrying performance of expansion pipe towards mid-rail, has effectively guaranteed on the other hand the rigidity of joint.
Description of drawings
Below in conjunction with accompanying drawing the specific embodiment of the present utility model is described in further detail.
Fig. 1 is a kind of structural representation of the utility model conductor rail expansion pipe arrangements of electric connection.
Fig. 2 is along the cross-sectional schematic of A-A line among Fig. 1.
Fig. 3 is the elevational schematic view of Fig. 1.
Fig. 4 is that the master of aluminium conductive plate in the utility model looks scheme drawing.
Fig. 5 is the schematic side view of aluminium conductive plate in the utility model.
Fig. 6 is that the master of copper to aluminum adapter bar in the utility model looks scheme drawing.
The specific embodiment
Referring to the arrangements of electric connection of Fig. 1 to a kind of conductor rail expansion pipe shown in Figure 6, described conductor rail expansion pipe comprises left conductor rail 1, mid-rail 2 and right conductor rail 3, the left side of the both ends of the surface of the right side of described left conductor rail 1, mid-rail 2 and right conductor rail 3 is the inclined-plane that is parallel to each other, and described arrangements of electric connection comprises aluminium conductive plate 4 and wire 5; Described aluminium conductive plate 4 is for having good electric conductivity, the aluminum alloy plate materials of weldability and enough mechanical strength, one end of described aluminium conductive plate 4 has a boss portion, aluminium conductive plate 4 is divided into left aluminium conductive plate 41 and right aluminium conductive plate 42, the bottom of the boss portion 41-1 of left aluminium conductive plate 41 and left conductor rail 1 is fixed, right-hand member suspends, the bottom of the boss portion 42-1 of right aluminium conductive plate 42 and right conductor rail 3 is fixed, left end suspends, described wire 5 is divided into left wire 51 and right wire 52, the two ends of left wire 51 connect respectively the fixed end of left aluminium conductive plate 41 and the end that suspends of right aluminium conductive plate 42, the two ends of right wire 52 connect respectively the fixed end of suspend end and the right aluminium conductive plate 42 of left aluminium conductive plate 41, keep relaxed state after described wire 5 connects.
Expansion pipe of the present utility model is arranged on the two ends of an anchor section of conductor rail, and left conductor rail 1, right conductor rail 3 link to each other with backbone by fish plate.Described left conductor rail 1, mid-rail 2 and right conductor rail 3 are processed by the steel-aluminium composite conducting rail backbone, and the cross section all is I shape, and the collector shoe of track elec. vehicle slides at the end face of conductor rail and realizes being flowed.
For preventing the electrochemical corrosion between the copper aluminium, prolong the service life of parts, arrangements of electric connection of the present utility model also comprises copper to aluminum adapter bar 6, thereby described copper to aluminum adapter bar 6 consists of by reach metallurgical binding copper coin side 6-1 and aluminium sheet side 6-2 together by laser welding or explosive welding, the two ends of described left wire 51 connect the fixed end of left aluminium conductive plate 41 and the end that suspends of right aluminium conductive plate 42 through copper to aluminum adapter bar 6 respectively, the two ends of right wire 52 connect respectively the fixed end of suspend end and the right aluminium conductive plate 42 of left aluminium conductive plate 41 through copper to aluminum adapter bar 6, the copper coin side 6-1 of described copper to aluminum adapter bar 6 contacts with described wire 5 and links to each other, the aluminium sheet side 6-2 of described copper to aluminum adapter bar 6 respectively with a described left side, the fixed end of right aluminium conductive plate 41,42 links to each other with the end in contact that suspends.
Boss portion and the aluminium conductive plate 4 of described aluminium conductive plate 4 one ends are made into integration, the boss portion 41-1 of described left aluminium conductive plate 41 is captiveed joint with the bottom of left conductor rail 1 by welding or riveted joint, and the boss portion 42-1 of right aluminium conductive plate 42 is captiveed joint with the bottom of right conductor rail 3 by welding or riveted joint.
Described wire 5 is the copper braid, and the copper braid is fixing with aluminium conductive plate 4 by bolt 9.
Expansion pipe of the present utility model also comprises fish plate 7; Web of the rail line of centers at described left conductor rail 1 and right conductor rail 3 is respectively equipped with left Level tune hole 1-1 and right Level tune hole 3-1, web of the rail line of centers in described mid-rail 2 is provided with fixed orifice 8, described fish plate 7 is installed in the both sides of left conductor rail 1, mid-rail 2 and right conductor rail 3 webs of the rail by bolt 7-1, left Level tune hole 1-1, right Level tune hole 3-1 and fixed orifice 8, form the rigid construction of layer clip, and described fish plate 7 is captiveed joint with mid-rail 2, with left conductor rail 1 and right conductor rail 3 sliding block joints.When mounted, the bolt 7-1 Tightening moment that is fastened on the mid-rail 2 is large, and the bolt 7-1 Tightening moment that links to each other with right conductor rail 3 with left conductor rail 1 is little, two groups of bolt 7-1 on left like this conductor rail 1 and the right conductor rail 3 can do longitudinal sliding motion respectively in left Level tune hole 1-1, right Level tune hole 3-1, thereby make fish plate 7 and left conductor rail 1 and right conductor rail 3 sliding block joints, captive joint with mid-rail 2.
Described fish plate 7 is aluminum alloy materials, and the described bolt 7-1 that fish plate 7 is installed is stainless steel material.Described fish plate 7 and bolt 7-1 participate in the electrical connection of conductor rail.
The utility model is mainly used in the Feeding System of Urban Rail Transit, be used for the conductor rail telescopic variation that compensation produces because of temperature traverse, be the inclined-plane that is parallel to each other by the setting of joint with left conductor rail 1, mid-rail 2 and right conductor rail 3, can make the contact surface surface of conductor rail continuously, the gap of seam can be adjusted and can overlap, thereby make shoegear by conductor rail expansion pipe gap the time, can be transitioned into the other end from an end smoothly, eliminate shoegear and by expansion pipe the time, produce electric arc.Manufacturing cost of the present utility model is lower, can guarantee afterflow and the current-carrying requirement of expansion pipe, and have good theftproof performance and resistance to shock.