CN2037324U - Contact net dual contact wire hanging structure - Google Patents

Abstract

The utility model relates to a hanging structure for a dual-contact wire of a contact net, which adopts two contact wires, and the two contact wires are hung over the same carrier cable. A positioning device at a positioning point is connected with the two wires by using a three-hole positioning sheet. A wire split point is connected with the two wires by using the three-hole positioning sheet, and a wire split pressure lever is used for pressing the wires and is used for installing a flow equalization leading wire. The tension force of the two wires is adjusted by an automatic adjusting system composed of a wire cable, a pulley wheel, a rocking plate, an insulator and a corresponding connecting piece, and the tension force of two differentiating devices is adjusted by using a stage adjusting method. The hanging structure has the advantages of uniform elasticity, uniform and less abrasion and stable dynamic characteristic curve, and the service life enhances more than 3 times.

Description

Contact net dual contact wire hanging structure

It is to the outstanding gown structure of the contact system of electric locomotive power supply that the utility model belongs in the rail transportation system.

Up to the present employed contact system all uses its structure of single contact wire as shown in Figure 11, and contact wire 9 hangs gowns on catenary 8 by messenger wire card 11 and messenger wire 10.Catenary forms contact system with contact wire by being connected with weight 5 and electric pole respectively by insulator 6, pipe link 4, steel rope 3, assembly pulley 1.

The shortcoming of this structure is that the elasticity of contact system is inhomogeneous, locating point place serious wear, and the wearing and tearing of whole piece circuit are inhomogeneous.For example, basal area is 100mm ²The flow conductivity of contact wire, main line is 500A, non-main line is 600A, when big electric current, just will burn line or broken string.When train starting, steep gradient, loaded vehicle traction, scaling loss is particularly serious.In present direct current contact system accident, burning line, broken string accident account for 45-50%.

In order to try to avert accidents, generally adopt following method;

1, improves voltage.According to formula P=IV, keep power constant, reduce electric current by improving voltage.

2, direct current (DC) is become alternating current.

These two kinds of methods are all inapplicable in plant area, the mine of existing direct current contact wire, because this will reconstruct substation, upgrade electric locomotive, change insulation system, therefore are difficult to realize.

3, produce the bigger contact wire of sectional area, for example produce 150mm ²Contact wire.This contact wire is the energy meet requirements in new, but when wearing away extremely near the stage of replacement, the not enough problem of flow conductivity will occur.And, there is the inhomogeneous and serious problem of locating point place abrasion of elasticity too.

The purpose of this utility model should solve solid wire flow conductivity deficiency exactly, easily burns line, broken string problem, solves the abrasion and the elasticity problem of non-uniform of single contact wire; Can utilize original contact system and contact wire production facilities again.

According to the utility model, the basal area that can increase contact wire improves current capacity, reduces traction networking impedance, improves short-circuit current value.

According to the utility model, on former single simple chain suspension circuit, set up two contact wires and hang; Original equipment is not done big change.

According to the utility model, constitute contact system by using new design elements such as rocker, three hole spacers, differentiation shackle.

According to the utility model, two contact wires of two contact gauzes are suspended on the same catenary, at the locating point place, be contained in the three hole spacers on the supporter two fixedly ply-yarn drill respectively two contact wires are blocked.

According to the utility model, the tension force of two contact wires of two contact gauzes is regulated by a compensation anchor and is reached consistent, promptly with a wire compensation anchor of two contact wires by a sliding wheel, pipe link, rocker, insulator institute structure is connected with counter weight system and frame rope bar.

According to the utility model, the registration device of online Cha Chu is to be connected two contact wires with a track switch depression bar with three hole spacers.

According to contact system of the present utility model, contact wire energy maintenance level, energy automatically regulating tension force, alleviate the concentrated load of locating point, mobile nargin is arranged, the contact wire good springiness, line trouble location is easy, there is not the off-line phenomenon, no electro spark, no electric arc during the electric locomotive operation, the dynamic characteristics balance, the amplitude of circuit collector bow diminishes, and it is effective, steadily closely connected to get stream.Long-pending with initial cross-section is 100mm ²Contact wire be example, to critical replacing value, promptly abrasion loss reaches at 40% o'clock to two contact wires, I ∞=571A, I in abrasion ₆₀=2556A, the current capacity when still not having abrasion greater than single contact wire.Test shows that be more than three times of single contact wire the service life of two contact wires.

Below in conjunction with accompanying drawing the present invention is elaborated.

Fig. 1 is the two contact wire suspended structure figure of contact system.

Fig. 2 is the two contact wire compensation of a contact system anchor structure.

Fig. 3 is the method for attachment of contact system catenary and contact wire.

Fig. 4 is the connection structure of line Cha Chu.

Fig. 5 is the location structure at locating point place.

Fig. 6 is the tension adjustment structure between circuit sectionalizer.

Fig. 7 is the two-wire direct connection structure at hard anchor place.

Fig. 8 is a two-wire circuit sectionalizer erection plan.

Fig. 9 is three hole spacer signals.

Figure 10 is the rocker scheme drawing.

Figure 11 is single contact wire suspended structure.

As shown in Figure 1, the difference of two wiring suspended structures and single contact wire suspended structure mainly is that two contact wires 91,92 have been installed, set up the tension regulating system (compensation anchor) that comprises two rockers 2 and insulator 6 and corresponding attaching parts at the contact line end, two contact wires 91, with distinguishing that shackle 20 fixes and insulated from each other, two contact wires 91,92 are suspended on the same catenary 8 between 92.At the locating point place, be contained in the three hole spacers 15 on the supporter 19 two fixedly ply-yarn drill 141,142 respectively two contact wires 91,92 are blocked (Fig. 5).

In tension regulating system shown in Figure 2, two contact wires are connected on the pulley 101 by steel cable 31, and pulley 101 is connected to counter weight system 5 and frame rope lever system by pipe link 41 with by rocker 2, insulator 6 and corresponding attaching parts.(counter weight system is also made into by the two string hammers of rocker bonded assembly, to add stiff stability and harmony by original single string hammer.) by the rotation of pulley and shaking of rocker 2, can automatically regulate the tension force of two contact wires 91,92, make it to reach mutual balance.

As shown in Figure 3, two contact wires 91,92 are hanging on same load 8 ropes by messenger wire 10, messenger wire card 11, all will keep the distance about 100mm between the two-wire and between the messenger wire card, it is above that this structure doubles the current capacity of contact system, and can use the armamentarium of former circuit, guarantee that two-wire keeps level, collector bow contacts two-wire simultaneously, and amplitude diminishes, and the destructive force that Electronmotive Force causes when satisfying short circuit is less than the requirement of allowable value.

As shown in Figure 4, no matter be that two contact wires and two contact wire intersect, still two contact wires and single contact wire intersect, all pair of contact wire is when the next, line trouble registration device is by fixing ply-yarn drill 141,142, three hole spacers 15 are connected three hole spacers with one line trouble depression bar 16 interconnects two contact wires 91,92, thereby has increased the stability and the levelness of line trouble.Even for the current-carrying that makes two contact wires, the copper of the current-sharing lead-in wire is installed between the online trouble cuts with scissors line 13.

Figure 5 shows that the location structure at two contact wire locating point places.Manage at original handle on the supporter 19 of 17 lower ends, load onto one three hole spacer 15, in two is lateral opening, load onto two fixedly ply- yarn drills 141 and 142, be respectively applied for and block contact wire 91,92.This lower end structure can make two fixedly ply-yarn drill 141,142 respectively two contact wires are regulated, thereby guarantee on former circuit, to install second contact wire surplus elongation displacement effectively, the sag of two contact wires is consistent, balancing tension, alleviate concentrated load, improve the elasticity of contact.

Shown in figure six, the tension adjustment structure between two place's circuit sectionalizers by parallel connection distinguish shackle 20, straight line, a root fracture line and a two-wire card 21 are formed.Two differentiation shackles 20 also connect, and the contact wire tension force employing stage adjustment method between two places and the differentiation shackle that connects is adjusted, and a contact is straight-through, another root contact wire fracture regulate behind the tension force affixed with two-wire card 21.

Claims (3)

1, a kind of by pulley 1, steel cable 3, attaching parts 4, insulator 6, catenary 8, contact wire 9, fixedly ply-yarn drill 14, the overhead contact line structure that supporter 19 is formed, it is characterized in that this contact system is by two contact wires 91,92 form, these two are touched line 91,92 are suspended on the same catenary 8, at the locating point place, with two in the three hole spacers 15 that are contained on the supporter 19 fixing ply-yarn drills 141,142 respectively with contact wire 91,92 block, contact wire is connected on the pulley 101 by steel cable 31, pulley 101 is by pipe link 41 with by rocker 2, insulator 6 and corresponding attaching parts are connected to counter weight system 5 and frame rope lever system.

2, a kind of overhead contact line structure according to claim 1, it is characterized in that line trouble registration device is by fixing ply-yarn drill 141,142, three hole spacers 15 are connected the line trouble depression bar 16 of three hole spacers and form with one, the copper hinge line 13 that is used as the current-sharing lead-in wire is installed between the line trouble.

3, a kind of overhead contact line structure according to claim 1 is characterized in that between the circuit sectionalizer at two places that tension-adjusting gear is to distinguish shackle 20, a direct-through line by parallel connection, and a root fracture line and two-wire card 21 are formed.

Images