CN203126564U

CN203126564U - Double-copper-ring expansion connector of steel aluminum composite rail

Info

Publication number: CN203126564U
Application number: CN 201320090852
Authority: CN
Inventors: 李雷
Original assignee: Individual
Current assignee: Individual
Priority date: 2013-02-08
Filing date: 2013-02-08
Publication date: 2013-08-14
Anticipated expiration: 2023-02-08

Abstract

The utility model relates to a double-copper-ring expansion connector of a steel aluminum composite rail and belongs to devices for third rail power supply of urban rail transit. The connector is mainly composed of a left steel aluminum composite rail, a right steel aluminum composite rail, a fishplate and a double-copper-ring current compensator. The current compensator is provided with two parallel copper rings including a lower copper ring 2 and an upper copper ring 3. The steel aluminum composite rail is linearly cut in a Z shape to be divided into the left steel aluminum composite rail 1 and the right steel aluminum composite rail 7. The connector is small in initial sliding starting force and high in reliability.

Description

The two copper band expansion pipes of the compound rail of steel aluminium

Technical field

The utility model relates to the two copper band expansion pipes of the compound rail of a kind of steel aluminium, belongs to the equipment of urban track traffic the 3rd rail power supply.

Background technology

Before the utility model is made, the compound rail expansion pipe of steel aluminium of urban track traffic the 3rd rail power supply in prior art, for example the patent No. is the bellows expansion joint of the compound rail of steel aluminium of ZL200920178441.5, the patent No. is the core rod type expansion pipe of 201120235658.2 the compound rail of steel aluminium, its common shortcoming is that the initial sliding tripping force is big in the process of expansion and contraction, and reliability is not high enough.

The utility model content

The purpose of this utility model is to overcome the shortcoming of the compound rail expansion pipe of above-mentioned steel aluminium, reduces its initial sliding tripping force, further improves its reliability.

The utility model technical scheme that adopts of dealing with problems is: adopt the two copper band expansion pipes of the compound rail of steel aluminium, comprise the compound rail of steel aluminium, fish plate and the current compensator that are divided into two sections, the current compensator that it is characterized in that the compound rail expansion pipe of steel aluminium is mainly two copper bands arranged side by side, following copper band 2 and last copper band 3; A compound rail of steel aluminium as varicosity is divided into two sections, the compound rail 1 of left steel aluminium and the compound rail 7 of right steel aluminium with the cutting of zigzag line.

Compared with the prior art the utility model has the following advantages:

1, the utility model is when the expansion pipe gap delta of expanding with heat and contract with cold changes, and is that the length of main current compensator two ends that constitute changes thereupon by two copper bands arranged side by side, but two ends conduct electricity all the time, do not have relative sliding friction, conduction reliability height.

2, the utility model compensating current passes through from four walls of two copper bands, each wall is by 1/4th of rated current, and the thickness of copper band also only 1/4th is so copper band rigidity reduces greatly, the initial sliding tripping force of expansion pipe obviously reduces, and insulating support is not fragile.The thickness of external splint 5 also can reduce.

3, the utility model expansion pipe gap is big, and weather reaches 250mm when the coldest, and the reduction that the electric locomotive shoegear slips over the corrosion-resistant steel area of contact of the utility model moment and the compound rail of steel aluminium is not more than 50%, and electro spark is little, can improve by fluidity.The expansion pipe quantity that disposes on the circuit can reduce.

4, copper band forms with the Copper Foil coiling of 0.1mm, and technology is simple.

Description of drawings

Fig. 1 is birds-eye view of the present utility model.

Fig. 2 is the A-A section-drawing of the utility model Fig. 1.

Fig. 3 is the B-B section-drawing of the utility model Fig. 1.

Fig. 4 is the C-C section-drawing of the utility model Fig. 1.

The specific embodiment

The embodiment of following the utility model in by reference to the accompanying drawings is further described:

In Fig. 1, the left side is the compound rail 1 of left steel aluminium, and the right is the compound rail 7 of right steel aluminium.The left and right sides compound rail of steel aluminium originally is one, with zigzag wire on WEDM of writing across the page, the slot longitudinally length of line of centers is 400mm, and left side slot begins to cut downwards to the edge from longitudinal centerline, the length of this slot is half of the compound rail width of steel aluminium 92mm, i.e. 46mm; The right slot begins upwards to cut 46mm from longitudinal centerline, and three slots make a compound rail of steel aluminium become two sections, the outstanding 400mm about each in the centre.Xiang Ertou drags apart from δ, becomes the expansion pipe gap delta of reservation.When δ=250mm, each half lap scarf joint about the left and right sides compound rail of steel aluminium also has 150mm still can adapt to the variation of 80 ℃ of summer in winter maximum temperature differences.Be not maximum area in the temperature difference, then can reduce the quantity of expansion pipe configuration, the width between centers of expansion pipe increases to 150 meters from 100 meters.

Two copper bands arranged side by side up and down among Fig. 1, following copper band 2 and last copper band 3, an end of the inboard of each copper band by fixed block 4 and the compound rail 1 of left steel aluminium machinery and electric linking up; Machinery and electric linking up, so just the left and right sides compound rail of steel aluminium with expansion pipe gap two ends has linked up electric the inboard other end of another of each copper band by fixed block 4 and the compound rail 7 of right steel aluminium.When gap delta changed, the girth of copper band was constant, but the semicircle of copper band can change with respect to the position of fixed block 4, and one distance can reduce, and the position of semicircle is adjusted automatically apart from increase in the other end under the elastic reaction of Copper Foil.

In the part sectional view on the right of Fig. 1, two fish plates 6 are clamped the waist of the compound rail of left and right sides steel aluminium through bolt 8 and taper spring 9.Fish plate 6 becomes electric another passage that links the compound rail of left and right sides steel aluminium of going up.The rated current of the compound rail of steel aluminium is big more than 20% on the comparable main track of total current of two fish plates 6 and following copper band 2 and upward copper band 3 transmission, has further improved the reliability of supply line.

Fig. 2 is the A-A section-drawing of the utility model Fig. 1, the connection relationship of copper band and the compound rail 1 of left steel aluminium about having expressed.The bottom of Fig. 2 is the compound rail 1 of left steel aluminium, and its two side is each fish plate 6.A left side, Fig. 2 top one side of something is to go up copper band 3, and the following root of contiguous block 4 and the compound rail 1 of left steel aluminium are welded into one, and its inboard with last copper band 3 links to each other, and material can be used brass, adopts spot welding or flash butt welding, good manufacturability.The right one side of something in Fig. 2 top is copper band 2 down, through another contiguous block 4 and the compound rail 1 of left steel aluminium machinery and electric linking up./ 4th of a sectional area peace rated current of copper band is calculated and is selected, and copper band employing 0.1 or the thick T2 Copper Foil coiling of 0.08mm form, can be zinc-plated, and anti-oxidant, life-saving.There is external splint 5 in the outside of each copper band, prevents that copper band from expanding when gap delta changes laterally.

Fig. 3 is the B-B section-drawing of the utility model Fig. 1, in the middle of the bottom be the compound rail 1 of left steel aluminium and the compound rail 7 of right steel aluminium each half, the two gap 0.18mm is equivalent to the diameter of WEDM molybdenum filament.Each fish plate 6 of its two sides waist, the contact surface gradient is 14 °, so fish plate 6 is bigger with the electric contact surface of the compound rail of left and right sides steel aluminium, the characteristic that conducts electricity is good, temperature rise is low.The top of Fig. 3 is two copper bands, and the left side is last copper band 3, and the right is following copper band 2.Article two, there is the 0.3mm gap centre of copper band at initial condition.When clearance for expansion δ changed, steel aluminium compound rail moving direction in the left and right sides was opposite forever.

Fig. 4 is the C-C section-drawing of the utility model Fig. 1, has expressed the assembly relation of fish plate 6 with the compound rail 7 of right steel aluminium.Fish plate 6 has stepped hole.Bolt 8 passes the hole of the compound rail of steel aluminium and fish plate, by nut and taper spring 9, makes left and right sides fish plate 6 clamp the compound rail 7 of right steel aluminium with the pressure of appropriateness.Because taper spring 9 compression stiffness is non-linear, this fastening means can guarantee that the electric current on the compound rail 7 of right steel aluminium passes to the compound rail 1 of left steel aluminium through fish plate 6, can reduce the gripping power of 6 pairs of compound rails of steel aluminium of fish plate again, thereby obviously reduce the initial sliding tripping force of expansion pipe.

The utility model can be in process of expansion and contraction have both kept the installation site precision of the compound rail of steel aluminium on the circuit under the situation about changing of expansion pipe gap, can reach copper band 2 to pass to the compound rail 7 of right steel aluminium reliably from the compound rail 1 of left steel aluminium through two fish plates 6 and last copper band 3 continuously in electric current again, thereby make the 3rd rail supply line keep unimpeded.

Claims

1. the two copper band expansion pipes of the compound rail of steel aluminium comprise the compound rail of steel aluminium, fish plate and the current compensator that are divided into two sections, it is characterized in that current compensator has two copper bands arranged side by side, are following copper band 2 and last copper band 3.

2. the two copper band expansion pipes of the compound rail of a kind of steel aluminium according to claim 1 is characterized in that the compound rail of steel aluminium is divided into two sections with the cutting of zigzag line, are the compound rail 1 of left steel aluminium and the compound rail 7 of right steel aluminium.