JPH0698905B2 - Composite trolley wire and its manufacturing equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention relates to a composite trolley wire in which a band member such as stainless steel serving as a sliding portion is joined to a member such as aluminum serving as a conductive portion, and particularly, a conductive portion member. A composite trolley wire in which the conductive part member can be prevented from being shaved by sliding of the contact plate of the current collector to generate burrs without reducing the bonding force between the sliding part strip and the strip, and a manufacturing device therefor. Is to provide.

[Prior Art] Conventionally, a composite trolley wire in which a member such as aluminum serving as a conductive portion is joined with a strip material such as stainless steel serving as a sliding portion has a structure shown in FIG.

That is, in the strip material to be the sliding portion 2, one strip surface was used as the sliding surface 1 and all the other surfaces were buried in the member of the conductive portion 3. In the member of the conductive portion 3, the width between the side surfaces 5, 5 is made larger than the strip width of the sliding portion strip material to form the end portions 6, 6 joined to both side edges of the sliding portion strip material. In this manner, the joining force is made strong and stable by adding not only the band surface facing the sliding surface but also the side edge surfaces to the joining portion 12 of the sliding portion band material to the conductive portion member. is there.

Such a composite trolley wire is used for the sliding surface 1 of the strip material of the sliding portion 2.
Was laid as a single line or a multi-line with a certain distance between lines.

[Problems to be solved by the invention]

By the way, in the above-mentioned composite trolley wire, the contact strip of the current collector may slidably slide at the branching portion or the sharp curve portion of the erection line. In that case, the contact strip is the strip material of the sliding portion 2. Not only the sliding surface 1 but also the lower end portions 6, 6 of the members of the conductive portion 3 that extend by joining to both side edges thereof slide.
The member 3 made of aluminum or the like of the conductive portion 3 is scraped by sliding of the contact plate to generate a cutting piece, that is, a burr, and the burr grows and protrudes. It was a factor that caused contact and caused a ground fault.

In order to solve the above problem, it is also possible to eliminate the lower end of the member forming the conductive portion so as not to be slid by the contact plate, but on the other hand, when the lower end 6,6 disappears,
The joining force between the sliding member and the conductive member is reduced, which causes a problem in practical use.

In view of the above-mentioned problems of the prior art, the present invention prevents the occurrence of burrs due to the sliding of the conductive part member without affecting the joining force between the strip material that becomes the sliding part and the member that becomes the conductive part. It is an object to provide a composite trolley wire and a manufacturing apparatus therefor.

[Means for solving problems]

The composite trolley wire provided by the present invention is a part that forms a side surface of the conductive part in a composite trolley wire in which a strip material such as stainless steel serving as a sliding part is joined to a member such as aluminum serving as a conductive part. , The ends joined by extending to the inclined parts on both side edges of the sliding part band material disappear as linear tips by the time reaching the ridge line parts on both sides of the sliding surface of the sliding part band material. The two side surfaces are inclined so that the linear tip end side thereof is widened toward the end and narrower than the sliding surface width.

Further, the manufacturing apparatus for the composite trolley wire provided by the present invention forms the composite trolley wire in the shape of the composite trolley wire in which a band member such as stainless steel serving as the sliding portion is joined to a member such as aluminum serving as the conductive portion. In a manufacturing apparatus for a composite trolley wire, comprising: a pair of rolls that press-contact a member and a sliding portion strip and a pair of restraining members that are formed between the pair of rolls to form a side surface of a conductive portion, The pair of restraining members are in contact with the ridge line portions on both sides of the sliding surface of the sliding portion band member, and the surface forming the conductive portion side surface increases from the roll side in contact with the sliding portion band member to the other roll. It is to be inclined so that the opposing separation width is narrowed.

〔Example〕

FIG. 1 shows a preferred embodiment of the composite trolley wire according to the present invention.

The composite trolley wire 4 uses a highly conductive and lightweight aluminum member as the conductive portion 3, and uses a stainless steel strip material having good wear resistance as the sliding portion 2. A rectangular cross section is formed in an arc shape so that the sliding surface 1 side bulges in an arc shape, and the conductive surface 3 has a band surface facing the sliding surface 1 and both side edges thereof as joints 12. It is embedded in the member.

On the other hand, the member of the conductive portion 3 is shaped in the cross-sectional shape of the grooved power line, and the grooved side surfaces 5, 5 are inclined toward the end of the sliding portion toward the strip material side, and the lower end portion 6 is formed. , 6 are extended and joined to the slanted portions on both side edges of the strip of the sliding portion 2, but are linear until reaching the ridges on both sides of the sliding surface 1 of the strip of the sliding portion 2. It was made to disappear as a point. As a result, both side surfaces 5, 5 of the conductive portion 3 are inclined so that the lower end portions 6, 6 have the maximum width and become narrower toward the upper side.

According to the composite trolley wire having the above structure, the aluminum member serving as the conductive portion is present on the extension line of the sliding surface formed on one of the surfaces of the stainless steel strip serving as the sliding portion. Therefore, even if the contact plate of the current collector is inclined at the branch or the sharp curve, the contact plate may slide on the sliding surface of the sliding part, but the end part 5 of the conductive part may be slid. It is possible to avoid movement, and to prevent burrs on a conductive portion that is cut like aluminum and generates a section. If the groove corresponding to the width of the strip material of the sliding portion 2, that is, the width of the sliding surface 2 is formed by the abrasion of the sliding plate during sliding, the edge of the abrasion groove becomes the conductive portion. The side surfaces, especially the side surfaces of the lower end portions 6,6 come close to each other, but the side surfaces 5,5 of the conductive part 3 are narrower than the sliding surface width with the lower end portions 6,6 being the maximum width. Since it is inclined, there is no risk of wear on the side surfaces 5, 5 of the conductive portion 3, particularly the lower end portions 6, 6 that contribute to the side edge portion of the sliding portion 2, at the edges of the wear grooves of the contact plate, and It is possible to prevent the parts from being worn away and reducing the bonding strength.

In addition, since the joining portion of the sliding portion strip material to the conductive portion member is secured not only on the strip surface facing the sliding surface but also on both side edges of the strip, the joining margin is not reduced and the joining force can be reduced. Absent.

FIG. 2 shows a preferred embodiment of an apparatus for manufacturing a composite trolley wire having the above structure.

This manufacturing apparatus is provided so as to contact a lower surface 8 which is a sliding surface of the sliding portion 2 and an upper surface 7 which is one surface of the conductive portion 3, and a member such as aluminum which is the conductive portion 3 and the sliding portion 2. A pair of rolls 9 and 10 that are rolled and pressure-contacted from the direction of superposition with a strip material such as a stainless steel, and a pair of rolls 9 and 10 that are interposed between the rolls 9 and 10 to form both side surfaces 5 and 5 of the conductive portion member. The restraint members 11 and 12 are provided.

Thus, the roll 10 in contact with the strip material of the sliding portion 2 is formed with a groove having an arc-shaped cross section on the circumferential surface, and the strip material of the sliding portion 2 is deformed by the rolling pressure contact force of the roll. It is designed to go in and shape into a bow shape.

When the strip material of the sliding portion 2 is formed into a bow shape as described above with a horizontal cross section, both side edges are inclined so as to face the conductive portion side.

On the other hand, the pair of restraining members 11 and 12 are the rolls 1 with which the sliding member strip is in contact with the surfaces 13 and 13 forming the both side surfaces 5 and 5 of the conductive portion 3.
It is inclined so that the facing separation width becomes narrower as it goes from the 0 side to the other roll 9, and the degree of the inclination is such that both sides of the sliding surface are different from the inclined portion formed by the both side edges of the sliding portion strip. The width of separation is gradually increased in the state of contact with the ridge line portion of the.

According to the manufacturing apparatus configured as described above, a pair of rolls 9 and 10 and a pair of rolls 9 and 10 are formed by stacking a member (square rod shape) that is a conductive portion and a strip material such as stainless steel that is a sliding portion. The rolls 9 and 11 installed between the restraining members 11 and 12,
By applying a pressing force to the elastic member, the soft member that becomes the conductive part is plastically deformed and formed into a predetermined shape, and the strip shape that becomes the sliding part by the pressing force at that time is the arc-shaped groove surface of the roll 10. At the same time as it is pushed into and deformed into an arch shape, the joint portion 12 with the conductive portion member that is plastically deformed is formed on the belt surface that faces the lower surface 8 that is the sliding surface. The conductive portion member that is plastically deformed also enters between the inclined portions of both side edges of the sliding portion member and the surface 13 of the restraining member facing the sliding portion member, and on the extension line of the molded side surface 5 of the conductive portion member. Such joint 12
To form a second joint. Then, the second joint portion disappears as a linear point by the sliding surface of the sliding portion strip, that is, by the ridge line portions on both sides of the lower surface 8,
In addition, inclined side surfaces 5 and 5 are formed such that the linear tip end is widened and narrower than the width of the lower surface 8 of the sliding portion.
Thus, the composite trolley wire as shown in FIG. 1 is manufactured.

In the case of such a manufacturing apparatus, in order to obtain wear resistance, the band material such as stainless steel that is hard only comes into contact with the restraining member only on the ridge line portions on both sides thereof, and thus there is no problem such as a bite and the like. The compound trolley wire can be manufactured with simple equipment.

In the above embodiment, the aluminum of the conductive part is A6063.
Alloy is suitable, and stainless steel for sliding parts is SUS 30
4 is appropriate.

The roll 9 in contact with the conductive part is a flat roll of 300φ, and the roll 10 in contact with the sliding part is a roll with groove of 300φ having a spherical bottom with a width of 17 mm and a depth of 3 mm.

Further, in the forming surface 13 of the restraint members 11 and 12, there is an inclination of 4 ° with respect to the surface orthogonal to the flat roll.

The aluminum member to be stacked on the stainless steel strip is 400
A composite trolley wire which was metallurgically bonded to each other was obtained by preheating at ℃ to 450 ℃ and applying a rolling reduction of 55% to the aluminum member for rolling pressure welding.

[Operation and effect of invention]

According to the composite trolley wire of the present invention, there is no member such as aluminum to be a conductive portion on the extension line of the sliding surface formed on one strip surface of the strip material such as stainless steel to be the sliding portion, Therefore, even if the contact strip of the current collector is tilted at the branching part or the sharp curve part, the contact strip may slide on the sliding surface of the sliding part but not slide on the end of the conductive part. Can be avoided,
It is possible to prevent burrs on a conductive part that is cut like aluminum and generates a section, and because the wear plate wears in the sliding process, it corresponds to the width of the strip material of the sliding part, that is, the width of the sliding surface. Even if a groove is formed and the edge of the wear groove approaches the side surface of the conductive portion, both side surfaces of the conductive portion are narrower than the sliding surface width with the linear tip as the maximum width. Since it is inclined, there is no risk of the linear tips contributing to joining to the side surface of the conductive part, particularly the sliding part side edge, being scraped at the edge of the wear groove of the contact plate, and the joining part is worn away to improve the joining force. It is possible to prevent the influence, and at the same time, the joint part of the sliding part band material to the conductive part member is secured not only on the band surface facing the sliding surface but also on both side edges of the band, so the joint margin does not decrease. The joining force can be sufficient.

Further, according to the apparatus for manufacturing a composite trolley wire of the present invention, since a strip material such as stainless steel that is hard to obtain wear resistance is in contact with the restraining member only at the ridge line portions on both sides thereof, there is no possibility of biting. It is possible to manufacture a composite trolley wire which has no problems, prevents burrs from occurring, and does not reduce the joining force, using simple equipment.

[Brief description of drawings]

FIG. 1 is a cross-sectional explanatory view showing an embodiment of a composite trolley wire according to the present invention, FIG. 2 is a cross-sectional explanatory view showing an embodiment of a composite trolley wire manufacturing apparatus according to the present invention, and FIG. It is a cross-sectional explanatory view of the conventional composite trolley wire. In the reference numeral, 1 is a sliding surface, 2 is a sliding portion (strip material such as stainless steel), 3 is a conductive portion (a member such as aluminum), 4
Is a composite trolley wire, 5 is a side surface on which the conductive portion is formed, 6 is a lower end which is a linear tip of the conductive portion, 9 and 10 are rolls, 11 and 12 are restraining members, and 13 is a surface on which the side surface of the conductive portion is formed. Is.

Claims (2)

[Claims] 1. A composite trolley wire in which a member such as aluminum serving as a conductive portion is joined with a strip material such as stainless steel serving as a sliding portion, the portion forming a side surface of the conductive portion.
The ends that are extended and joined to the slanted parts on both sides of the sliding part strip disappear as linear tips before reaching the ridges on both sides of the sliding part of the sliding part, and both sides of the conductive part A composite trolley wire, wherein the surface is inclined such that its linear tip end side is divergent and narrower than the sliding surface width. 2. A conductive part member and a sliding part band member are rolled in order to form a composite trolley wire in which a band member such as aluminum serving as a conductive part is joined to a band member such as stainless steel as a sliding part. In a manufacturing device for a composite trolley wire, comprising a pair of pressure-contacting rolls and a pair of restraining members that are arranged between the pair of rolls to form a side surface of a conductive portion, the pair of restraining members is a sliding portion band. The surface that is in contact with the ridges on both sides of the sliding surface of the material and that forms the conductive part side surface is inclined so that the facing separation width becomes narrower from the roll side where the sliding part strip material contacts to the other roll. An apparatus for manufacturing a composite trolley wire, which is characterized in that