JPH067964Y2 - Rigid trolley wire - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION (Industrial field of application) The present invention relates to a rigid trolley wire laid parallel to a track for supplying electricity to a running train or the like. In particular, the present invention relates to a rigid trolley wire in which a stainless steel current collector plate is provided on the current collector surface in order to improve wear resistance of the current collector surface.

(Prior Art and its Problems) FIG. 9 shows a conventional example, which has a structure in which a stainless steel current collector plate 41 is pressed against a convex trolley main material 40 made of copper or aluminum by hot extrusion.

In the structure of FIG. 9, when the current collector plate 41 has reached the limit of wear, the entire trolley wire must be replaced, and maintenance such as replacement work takes time. Moreover, there are the following technical issues.

Due to the difference in thermal expansion coefficient between the trolley main material 40 and the current collector plate 41,
When the temperature changes, a bimetal effect occurs and the entire trolley wire is distorted. As a result, the current collector plate 41 and the trolley main material 40 may be displaced in the length direction at the end of the wire length direction, or may be peeled off. Cause

Further, when the trolley wire is curved corresponding to the curved track, the trolley main material 40 and the current collector plate 41 are displaced in the length direction during the machining, which causes the current collector plate 41 to peel or buckle. Occurs.

In the conventional example shown in FIG. 10, a stainless steel collector plate 47 is formed in a U shape and is covered with a reinforcing member 46 made of aluminum, and both ears 45a of a trolley main member 45 made of aluminum are formed.
In this structure, a current collector plate 47 is fitted in between and the ears 45a are caulked to fix the current collector plate 47 to the trolley main member 45.

Even in the structure of FIG. 10, when the wear of the current collector plate 47 reaches the limit, the entire rigid trolley wire must be replaced, and maintenance such as replacement work takes time.

Further, as in FIG. 9, the current collector plate 41 is apt to be displaced, peeled or buckled due to the difference in thermal expansion coefficient. Further, since the current collector plate 47 is simply covered by the reinforcing member 46, almost no surface pressure is applied between the current collector plate 47 and the reinforcing member 46. The resistance may increase and the current collector plate 47 may be burnt. That is, since stainless steel has lower conductivity than aluminum or copper, when the stainless steel collector plate 47 is provided as described above, in order to maintain good conductivity, the surface pressure of the contact surface between them should be adjusted. It is required to secure enough.

(Object of the Invention) The object of the present invention is to make it easy to perform maintenance and replacement when the current collector plate is worn in a rigid trolley wire in which a stainless steel current collector plate is provided on a trolley main material having high conductivity. The purpose of the present invention is to prevent peeling and the like due to the deviation of the current collector plate due to the difference in the coefficient of thermal expansion and to ensure excellent electrical conductivity between the current collector plate and the trolley main material. Further, the object of the present invention is to make the current collector plate holding portion compact.

(Technical Means for Achieving the Purpose) In order to achieve the above object, the present invention provides a trolley main material made of highly conductive copper or aluminum having a convex cross-sectional shape and a current collecting surface. In a rigid trolley wire with a stainless steel current collector plate to be formed, the current collector plate is formed in a U-shaped cross-section with both side walls and is covered on the head of the trolley main material on the current collecting surface side. , Through holes are formed in both side walls of the trolley main material and the current collecting plate, and the through holes of the current collecting plate are slightly eccentric to the current collecting surface side with respect to the through holes of the trolley main material. A cylindrical nut with a collar that engages with this is inserted into the through hole of the side wall, and a lock bolt that engages with this is inserted through the through hole of the other side of the current collector plate. Screwed into the cylindrical nut in the through hole of the Holds both side walls of the current collector.

(Function) The through hole of the current collector plate is eccentric to the current collecting surface side with respect to the through hole of the trolley main material, and the cylinder nut and the lock bolt are inserted into both of the above holes. The current collector plate itself also bends, and its restoring force (spring action) constantly presses the current collector plate and the end surface of the trolley main material on the current collecting surface side to improve the electrical conductivity between the current collector plate and the trolley body. Secure.

Further, by removing the bolt and the cylinder nut, the current collector plate and the trolley main material can be disassembled, so that when the current collector plate is worn, only the current collector plate can be replaced, and maintenance is easy.

Since both side walls of the current collector plate are held by the bolt head and the tubular nut collar portion, it is possible to prevent the both side walls of the current collector plate from opening and prevent the current collector plate and the trolley main material from shifting in the longitudinal direction. Therefore, the current collection performance is good. In addition, the holding part is compact, and the number of holding parts can be saved.

(Embodiment) FIG. 1 is an enlarged vertical sectional view of a rigid trolley wire to which the present invention is applied. In FIG. 1, a rigid trolley wire 9 is a copper trolley main material 10 having good conductivity and The collector plate 13 is made of stainless steel, which has high wear resistance. The trolley main material 10 has a flange 11 at the base end (right end in FIG. 1).
Is integrally formed, and thus the cross-sectional shape is formed to be substantially convex (T-shaped), and a bulged head 12 is integrally formed at the tip end on the current collecting surface H side. The head 12 has groove portions 1 at both ends in the pin length direction (vertical direction in FIG. 1).
2b, which forms a waist 12a in the center. That is, the head 12 has a substantially H-shaped cross section, and the constricted portion 12a is formed with a through hole 15 penetrating in the vertical direction. Further, the inner surface of the groove portion 12b is formed in a taper shape so as to come to the through hole center line side as it goes to the constricted portion 12a side.

The current collector plate 13 is integrally provided with both side walls 14 so that its cross-sectional shape is formed into a substantially U-shape. The current collector plate 13 covers the head 12 of the trolley main member 10 and has a through hole 16 in both side walls 14. Has been formed.

The center line O2 of the through hole 16 of the current collector side wall 14 is eccentric to the current collecting surface H side by a slight eccentricity c with respect to the center line O1 of the through hole 15 of the trolley main material 10. A washer 17 is arranged in each of the through holes 16 of the side wall 14 of the current collector plate.

A cylindrical nut 21 with a collar and a lock bolt 19 are provided to fix the current collector plate 13 to the trolley main material head 12. The cylinder nut 21 passes through the hole of the lower washer 17 and the through hole 16 of the lower side wall 14 from below and is inserted into the through hole 15 of the trolley main material head 12. Cylinder nut 21
Is interrupted in the head 12 of the main material of the trolley, and the cylinder nut 21
The upper edge of the head is located at the center of the head 12 in the vertical direction. The bolt 19 passes through the hole of the upper washer 17 and the through hole 16 of the upper side wall 14 and is inserted into the through hole 15 of the trolley main material head 12, and is screwed into the cylinder nut 21. The flange portion 21a of the cylinder nut 21 and the bolt head portion 19a are used to interpose the current collector side wall 14 through both washers 17.
I am holding. The washer 17 integrally includes a bent portion 17a at the end of the trolley main member 10 on the flange 11 side,
The bent portion 17a abuts the end surface of the side wall 14 on the side of the flange portion 11 and serves as a rotation stopper for the washer 17.

FIG. 2 is a view taken in the direction of arrow III in FIG. 1, and the through hole 16 of the current collector plate 13 is a long hole that is long in the length direction of the trolley wire, whereby, for example, the trolley wire is bent into a curved shape. Sometimes
The lengthwise deviation of the current collector plate 13 and the trolley main member 10 is absorbed, and an unreasonable load is not applied to the cylinder nut 21 and the bolt 19.

FIG. 3 is a view on arrow III of FIG.
1a has a pair of cut-off portions 2 for engaging a tool or the like.
9 is formed.

FIG. 4 shows a state in which the trolley wire 9 is supported by the insulator 26. The flange portion 11 is fixed to the cap 26a portion of the insulator 26 by the base end portions of the upper and lower fasteners 32, and the trolley wire The center of gravity portion (intermediate portion of the web 10a) S is supported by the tip of the fastener 32. The insulator 26 is fixed to the parapet via a mounting plate 29 of the supporting device.

FIG. 5 shows a perspective view at the time of disassembling. The through holes (long holes) 16 of the current collector plate 13 are arranged at intervals of 60 cm, for example, and the through holes 15 of the trolley main material 10 are also on the current collector plate 13 side. Corresponding to the through-holes 16 of the above, they are arranged at intervals of 60 cm.

Both the current collecting surface H of the current collecting plate 13 and the tip surface of the head 12 of the trolley main material 10 are formed in a gentle arc shape.
As exaggeratedly shown in FIG. 6, before assembly, the radius of curvature R2 of the current collector plate 13 is slightly larger than the radius of curvature R1 of the head 12 of the trolley main material. The current collecting surface portion of the current collector plate 13 is bent by the spring action of the bolts 21 and the like, so that the radius of curvature becomes substantially the same as the radius of curvature R1 of the head 12.

FIG. 8 shows a usage example of a rigid trolley wire, which is an example used for supplying electricity to a tire-type train. In FIG. 9, an electric train 1 is provided with running tires 2 and guide wheels 5 for preventing falling, and runs on a track surface 3 of a track device. A parapet 7 is provided on the side of the raceway surface 3, and a plurality of rigid trolley wires 9 are supported by the parapet 7 via a supporting device 8. The rigid trolley wire 9 is arranged parallel to the track, and the current collecting shoe 4 of the train 1 abuts on it.

The operation of this embodiment will be described in detail. Since both through holes 15 and 16 in FIG. 1 are displaced so that the through hole 16 on the side of the current collector plate 13 is located on the side of the current collecting surface, the sixth hole at the time of assembly is shown. As shown in an exaggerated manner in the drawing, the edge of the through hole 15 on the side of the current collecting surface is in pressure contact with the tubular nut 21 in the vertical central portion of the head, and the portion near the flange portion of the tubular nut 21 and the bolt head of the bolt 19 are shown. The portions in the vicinity of the portions are in pressure contact with the end faces of the through holes 16 of the side wall 14 on the side opposite to the current collecting surface H (the direction of the arrow A), whereby the central portion of the cylinder nut 21 and the bolt 19 is on the current collecting surface side. And bend to come to the other side. Therefore, the restoring force (spring action) of the bolt 19 or the like urges the current collector plate 13 in the direction of the arrow A, and the current collector plate 13 is pressed against the tip end surface of the trolley main member 10 to secure a constant surface pressure. To do. Moreover, the shape of the head 12 of the trolley main material 10 is formed into an H shape having the groove portions 12b at both ends in the bolt length direction, and the inner surface of the groove portion 12b becomes closer to the central portion of the bolt length direction toward the center of the bolt. By forming the taper shape so as to come to the line side, the tubular nut 21 and the bolt 19 are supported at three points, that is, both end portions and the central portion. Therefore, the spring effect due to the bending of the bolt 19 or the like can be expected, while there is no concern that the bolt 19 or the like will be sheared between the side wall 14 and the trolley main material head 12.

Further, since the radius of curvature R2 of the current collector plate 13 in FIG. 6 is made slightly larger than the radius of curvature R1 of the trolley main material head 12, the current collector plate 1 due to the action of the bolts 19 and the like during assembly.
Due to the bending of No. 3, the top wall portion of the current collector plate 13 and the end surface of the trolley head 12 are pressed against each other more strongly, and the electrical conductivity between the both 13 and 12 is improved. By the way, in the top wall portion of the current collector plate 13, electricity flows in the plate pressure direction, so that the path becomes short and the current-carrying performance is good. The side wall 14 has a large electric resistance, but in the present invention, due to the spring action of the bolt 19 or the like and the spring action of the current collector plate 13 itself, the surface pressure at the top wall part having a low electric resistance is sufficient. Can be secured.

At the time of assembly, since the side wall 14 of the current collector plate is held by the bolt head portion 19a and the tubular nut collar portion 21a of FIG. 1, the current collector plate 14 can be prevented from opening.

When assembling the current collector plate 13 and the trolley main material 10, the current collector plate 13 is covered on the trolley main material head 12, the washer 17 is arranged in each through hole 16 part, and the cylinder nut 21 is attached to the tip taper part. Utilizing the through hole 1 of the lower side wall 14
6 and the through hole 15 of the head 12. At this time, if the current collector plate 13 is pressed to the head side by, for example, an appropriate pressing jig, the nut 21 can be easily inserted. Then, the lock bolt 19 is inserted into the through hole 16 or the like from above, and the cylinder nut 2
Screw to 1.

Further, since the through hole 16 of the current collector plate 13 is a long hole, even if the current collector plate 13 and the trolley main member 10 are displaced in the axial direction during bending of the rigid trolley wire, the bolt 19 or the like is damaged. Can be prevented, the residual stress between the both 13 and 10 can be reduced, and buckling of the current collector plate 13 can be prevented.

When the current collector plate 13 is worn and needs to be replaced, the lock bolt 19 and the tube nut 21 are removed, the current collector plate 13 is removed as shown in FIG. 3, and only the current collector plate 13 is replaced with a new one.

The washer 17 covers the pin hole (long hole) 16
Prevents the entry of rainwater and dust.

(Another Example) (1) As shown by phantom lines in FIG. 5, three through-holes 16 of the current collector plate 13 and between through-holes 15 of the trolley main material 10 are spaced at equal intervals of three, for example. Spare through holes 15a, 16a
(So-called dead hole) is formed.

The rigid trolley wire has, for example, a fixed length of 7.5 m, and these are sequentially added. However, when the dimensions are matched in the field, a random-sized product appears and the fixed-length product is cut. At this time, the spare through holes 15a and 16a are used to arrange the bolts 19 and the like as close to the ends as possible.

(2) Aluminum, which has high conductivity, can be used as the main material of the trolley.

(3) The bent portion 17a of the washer 17 shown in FIG. 1 may be brought into contact with the end surface of the trolley main material head 12 on the flange portion side.

(5) Further, the present invention can be applied to a rigid trolley wire having no groove 12b of the head 12 as shown in FIG.

(6) The washer 17 can be omitted. In that case, the head portion 19a of the bolt 19 and the collar portion 21 of the tube nut 21
By increasing the diameter of a, the head 19 is placed at the eccentric position of the pin hole 16.
The pin hole 16 can be completely surrounded even when a and the flange portion 21a are located.

(Effect of the Invention) According to the present invention as described above: (1) The stainless steel current collector plate 13 is mechanically coupled to the trolley main material 10 having high conductivity by using the cylinder nut 21 and the bolt 19. Therefore, when the current collecting surface H is worn, the current collecting plate 13 may be removed from the trolley main material 10 and only the current collecting plate 13 may be replaced with a new one. Therefore, replacement work, that is, maintenance of the trolley wire is easy.

Moreover, it is possible to prevent peeling and the like due to axial displacement as in the conventional case.

(2) Despite the fact that the current collector plate 13 can be detached from the trolley main material 10, good current-carrying performance between the current collector plate 13 and the trolley main material 10 can be ensured, and the current collection plate for a train or the like can be secured. Good electrical performance.

That is, generally, stainless steel has a higher wear resistance than copper or aluminum but has a lower conductivity, but the through hole 16 of the current collector side wall 14 is slightly charged with respect to the through hole 15 of the trolley main member 10. The surface pressure of the contact surface between the current collecting plate 13 and the trolley main member 10 is sufficiently secured by the bending of the bolts 19 and the like at the time of assembly and the bending of the current collecting plate 13 itself at the time of assembly, Good electrical conductivity between the electrical plate 13 and the trolley main material 10 can be ensured, and current collection performance and the like are good.

(3) Since both side walls 14 of the current collector plate 13 are held by the bolt head portion 19a and the tubular nut collar portion 21a,
The current collector plate 13 can be prevented from opening.

(4) Since the lock bolt 19 and the cylinder nut 21 are inserted into the through hole 15 of the trolley main material head 12, and the washer 17 is arranged on the side wall of the current collector plate, for example, the bolt is attached to the web portion of the trolley main material. Compared with a structure in which both ends of the pin are held by arms or the like by fitting a tube nut or the like, the number of parts can be reduced and the size can be made compact. Moreover, since a space can be secured on both sides of the web 10a portion of the trolley main member 11, the center of gravity S of the trolley wire can be accurately supported by the fastener 32 when supporting the insulator 26 or the like as shown in FIG. Support for trolley wire is stable.

[Brief description of drawings]

FIG. 1 is an enlarged vertical sectional view of a rigid trolley wire to which the present invention is applied, FIG. 2 is a view taken in the direction of arrow II in FIG. 1, and FIG. 3 is III in FIG.
FIG. 4 is a front view showing a state where the trolley is supported by an insulator, FIG. 5 is a perspective view showing a state where the current collector plate is removed from the trolley main material, and FIG. 6 is a current collector plate and the trolley main material. Fig. 7 is a vertical cross-sectional partial view exaggerating the difference in the curvature radii of Fig. 7, Fig. 7 is a vertical cross-sectional schematic view exaggerating the bending of a cylinder nut, etc. FIG. 9 and FIG. 10 are vertical cross-sectional views of the conventional example. 10 ... Trolly main material, 12 ... head, 13 ... current collector,
14 ... Side wall, 15 ... Through hole, 16 ... Through hole, 17
...... Washer, 19 ...... Lock bolt, 19a ...... Head, 21 ...... Cylinder nut, 21a ...... Brim part

Claims (1)

[Scope of utility model registration request] 1. A rigid trolley wire comprising a trolley main material made of highly conductive copper or aluminum or the like having a convex cross-section and a stainless steel current collector plate forming a current collecting surface. , The current collector plate is formed into a U-shaped cross-section having both side walls, and the head of the trolley main material on the current collecting surface side is covered, and through holes are formed in both side walls of the trolley main material and the current collector plate, respectively. Then, the through hole of the current collector plate is slightly eccentric to the current collecting surface side with respect to the through hole of the trolley main material, and a tubular nut with a collar that engages with this is provided in the through hole of one current collector plate side wall. Insert the lock bolt that engages with the through hole of the side wall of the other collector plate, screw the lock bolt into the tubular nut in the through hole of the head of the trolley main material, and lock the bolt. A rigid trolley wire that holds both side walls of the current collector plate by the head and cylinder nut collar.