JP2557253B2 - Rigid trolley wire - Google Patents

Description

Description: TECHNICAL FIELD 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 copper convex trolley main material 40 by hot extrusion.

In the structure shown in FIG. 9, when the wear of the current collector plate 41 has reached the limit, 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, a bimetal effect occurs when the temperature changes, and the entire trolley wire is distorted, so that the current collector plate 41 and the trolley main material at the ends in the wire length direction.
40 may shift in the length direction or peel off,
It may cause a power failure.

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 lengthwise direction during the machining, which may cause peeling or buckling of the current collector plate 41. Occurs.

In the conventional example shown in FIG. 10, a stainless steel current collector plate 47 is formed in a U shape and is covered with an aluminum reinforcing member 46, and the current collector plate is provided between both ears 45a of the aluminum trolley main member 45. This is a structure in which the current collector plate 47 is fixed to the trolley body 44 by fitting 47 and crimping the ear portion 45a.

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

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, the current collector plate 47 is
Almost no surface pressure is applied between the 47 and the reinforcing member 46,
As a result, the electric resistance at the time of current collection may increase, and the current collector plate 47 may burn. That is, since stainless steel has lower conductivity than aluminum or copper, when the stainless steel current collector plate 47 is provided as described above,
In order to maintain good electrical conductivity, it is required to secure sufficient surface pressure on the contact surface between them.

(Object of the Invention) An object of the present invention is to provide a stainless steel collector plate on a trolley main material having high conductivity, and to facilitate maintenance and replacement of a rigid collector wire when the collector plate is worn. With
It is intended to prevent peeling due to the deviation of the current collector plate due to a difference in thermal expansion coefficient, and to ensure excellent electrical conductivity between the current collector plate and the trolley main material. Further, it is an object of the present invention to reduce the size of the holding portion of the current collector plate and to save the number of holding parts.

(Technical means for achieving the object) In order to achieve the above object, the invention according to claim (1) of the present application is based on a trolley main body made of copper or aluminum and having a high cross-sectional shape and having a high conductivity. And a rigid trolley wire provided with a stainless steel collector plate forming a collector surface,
A current collector plate is formed in a U-shaped cross-section with both side walls, and is covered on the head of the main surface of the trolley main body on the side of the current collecting surface. Holes are formed respectively, the pin holes of the current collector plate are slightly eccentric to the pin holes of the main material of the trolley, and hollow coupling pins are inserted into both pin holes. The lock rivet is inserted through the lock rivet, and both ends of the lock rivet hold the pin hole portions on both side walls of the current collector plate and the periphery thereof through the lock washers.

In the invention according to claim (2), the cross-sectional shape of the head of the trolley main material with which the current collector plate is covered is formed into an H shape having groove portions at both ends in the pin direction, and the inner surface of the groove is centered in the pin direction. It is formed in a taper shape so as to come closer to the pin center line side as it goes to the part side.

(Function) Since the pin holes of the current collector plate are eccentric to the current collecting surface side of the pin hole mainly of the trolley and the connecting pins are inserted into the above both holes, the connecting pins bend and the restoring force due to them (Spring action)
By this, the current collector plate and the end surface of the trolley mainly on the current collecting surface side are constantly in pressure contact with each other, and good electrical conductivity is secured between the current collector plate and the trolley body.

Further, by removing the rivet and pulling out the pin, the current collector plate and the trolley main material can be disassembled, so that only the current collector plate can be replaced for wear of the current collector plate, and maintenance is easy.

Since the rivet head holds the pin hole on both side walls of the current collector plate, it prevents pins from falling off, prevents both side walls of the current collector plate from opening, and prevents the current collector plate and the trolley from shifting in the longitudinal direction. Can be stopped. Therefore, the current collection performance is good. Further, the holding portion is compact, and the number of holding members can be saved.

Also, change the shape of the head of the trolley main material that the current collector plate is covered,
The pin is formed into an H shape having grooves at both ends in the pin direction, and the inner surface of the groove is tapered so as to be closer to the center line of the pin toward the center of the pin direction. Supports three points with the center. Therefore, an effective spring action due to the bending of the pin can be expected, while there is no concern that the pin will be sheared between the side wall of the current collector plate and the head of the trolley main material.

(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 shown.
Is composed of a trolley main material 10 made of copper having good conductivity and a current collector plate 13 made of stainless steel having high wear resistance. The trolley main material 10 integrally has a flange portion 11 at the base end portion (the right end portion in FIG. 1), and as a result, the cross-sectional shape is formed in a generally convex shape (T shape). Bulging head at the tip
12 are integrally formed. The head 12 has groove portions 12b at both ends in the pin length direction (vertical direction in FIG. 1),
Thereby, a constricted portion 12a is formed in the central portion. That is, the head 12 has a substantially H-shaped cross section, and the constricted portion 12a is formed with a pin hole 15 penetrating in the vertical direction. The inner surface of the groove portion 12b is formed in a tapered shape so as to come to the pin hole center line O1 side as it goes to the constricted portion 12a side. In other words, the width D of the groove 12b is tapered so that it becomes narrower toward the constricted portion 12a.

The current collector plate 13 is integrally provided with both side walls 14 so that the cross-sectional shape thereof is formed into a substantially U-shape.
The head hole 12 is covered with pin holes 16 formed in both side walls 14.

The center line O2 of the pin 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 pin hole 15 of the trolley main material 10. A hollow connecting pin 27 having a C-shaped cross section is inserted into both the holes 15 and 16 to connect the current collector plate 13 and the trolley main member 10. Tapers are formed at both ends of the pin 27 so that the pins 27 can be easily inserted into the pin holes 15 and 16 even if the holes 15 and 16 are displaced from each other as described above.

A lock washer 17 is arranged in each of the pin holes 16 of the side wall 14 of the current collector plate, and the lock rivet 19 for coupling is inserted into the hole 22 and the pin 27 for coupling of the washer 17, and by both ends heads 19a thereof. The pin hole 16 portion of the side wall 14 of the current collector plate and its periphery are held by a washer 17. The washer 17 is a bent portion at the end of the trolley main material 10 on the flange 11 side.
17a is integrally provided, whereby the cross-sectional shape is L-shaped.

FIG. 2 is a view taken in the direction of arrow II in FIG. 1 and shows a pin hole of the current collector plate 13.
16 is a long hole that is long in the length direction of the trolley wire, so that, for example, when bending the trolley wire in a curved shape, it absorbs a deviation in the length direction between the current collector plate 13 and the trolley main material 10. , Pin 27 is designed not to be overloaded.

FIG. 3 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 so that the trolley wire is not detachable. 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 a mounting plate 29 (or parapet) of the supporting device.

FIG. 4 shows a perspective view when disassembled. The pin holes (long holes) 16 of the current collector plate 13 are arranged, for example, at intervals of 60 cm, and the pin holes 15 of the trolley main material 10 are also on the current collector plate 13 side. They are arranged at 60 cm intervals corresponding to the pin holes 16 of.

Both the current collecting surface H of the current collecting plate 13 and the tip surface of the head 12 of the trolley main member 10 are formed in a gentle arc shape.
As exaggerated in the figure, before assembly, the radius of curvature R2 of the current collector plate 13 relative to the radius of curvature R1 of the head 12 of the trolley main material is
Is slightly larger than the
Due to the spring action of both end portions of 27, the current collecting surface portion of the current collecting plate 13 is bent, so that the radius of curvature becomes substantially the same as the radius of curvature R1 of the head 12.

FIG. 7 shows an example of using a rigid trolley wire, which is an example used for supplying electricity to a tire-type train. In FIG. 7, an electric train 1 is provided with running tires 2 and a guide wheel 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 the embodiment will be described in detail. Since both pin holes 15 and 16 in FIG. 1 are displaced so that the pin 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 described. As shown in an exaggerated manner in the figure, the central portion of the pin 27 is in pressure contact with the end face of the pin hole 15 of the trolley main member 10 on the side of the current collecting surface H, while both ends of the pin 27 are side walls.
The pin 27 is pressed against the end surface of the pin hole 16 opposite to the current collecting surface H (direction of arrow A), whereby both ends of the pin 27 are on the current collecting surface H side and the center is opposite to the current collecting surface side. Bend to come to the side. Therefore, both ends of the pin 27 urge the current collector plate 13 in the direction of arrow A by the restoring force (spring action) of the pin 27, and the current collector plate 13 is moved to the trolley main body 10.
It is pressed against the tip surface of the head to ensure a constant surface pressure. Therefore, good electrical conductivity between the stainless steel current collector plate 13 and the copper trolley main material 10 can be ensured.

Moreover, the shape of the head 12 of the trolley main body 10 is formed into an H shape having grooves 12b at both ends in the pin length direction, and the inner surface of the groove 12b becomes closer to the center of the pin in the length direction of the pin. By forming the taper so that the pin 27
Will be supported at three points, that is, both ends and the center. Therefore, a large spring effect due to the bending of the pin 27 can be expected, while there is no concern that the pin 27 will be sheared between the side wall 14 of the current collector plate and the head 12 of the trolley main material.

In addition, the radius of curvature R2 of the current collector plate 13 in FIG.
By making it slightly larger than the radius of curvature R1 of 12,
Due to the bending of the current collector plate 13 due to the action of the pin 27 at the time of assembly, the top wall portion of the current collector plate 13 and the end surface of the trolley head 12 are strongly pressed against each other, and the electrical conductivity between the both 13 and 12 is improved. Incidentally, the current collector plate 13 has a small electric resistance because electricity flows in the plate pressure direction at its top wall portion, while the electricity flows at the side wall 14 portion in the direction along the side wall 14 and thus has a large electric resistance. Further, due to the spring action of the pin 27 and the spring action of the current collector plate 13 itself, it is possible to sufficiently secure the surface pressure at the top wall portion having a low electric resistance.

When assembled, the head 19 of the rivet 19 of FIG.
Since the pin hole 16 part of the current collector side 14 is held by a and the washer 17, the pin 27 will not fall off due to vibration or impact of the train shoe, and the current collector plate
The opening of 14 can be prevented, and the pin 27 is prevented from coming off. When the current collector plate 13 and the trolley main material 10 are assembled, the current collector plate 13 is covered on the trolley main material head 12, and the pin 27 is formed by using the tip taper portion of the pin hole 16 and the head of the current collector side wall 14. Department
Drive into 12 pin holes 15. Then, the washer 17 is arranged, the lock rivet 19 is inserted into the pin 27, and the tip of the rivet is caulked.

Further, since the pin holes 16 of the current collector plate 13 are elongated holes, the current collector plate 13 and the trolley main material are bent when the rigid trolley wire is bent.
Even if the position in the axial direction with respect to 10 is displaced, the pin 27 can be prevented from being damaged, and the residual stress between the both 13 and 10 can be reduced.
Can prevent buckling.

If the current collector plate 13 is worn and needs to be replaced, remove the lock rivet 19 and washer 17 and remove the pin 27 to remove the current collector plate 13 as shown in FIG. 4, and replace only the current collector plate 13 with a new one. Replace with.

(Another embodiment) (1) Pin holes in the current collector 13 as shown by phantom lines in FIG.
Preliminary pin holes 15a and 16a (so-called dead holes) are formed at intervals of 16 and between the pin holes 15 of the trolley main member 10 at regular intervals, for example.

The rigid trolley wire has, for example, a fixed length of 7.5 m, for example, and they are successively added. However, when the dimensions are matched on the ground, a random scale product appears and the dimensions are cut. At this time, the spare pin holes 15a and 16a are used to arrange the coupling pin 27 as close to the end as possible.

(2) Aluminum having high conductivity can also be used as the main constituent of the trolley.

(3) As the connecting pin 27, a blind rivet 19 may be used as shown in FIG. That is, as is generally well known, the bulging portion 31a is provided in the hollow rivet 19.
The caulking core 31 having the above is inserted, and the core 31 protrudes upward before inserting the rivet (virtual line).
31b is integrally provided, and after inserting the rivet 19 into the pin 27,
The pull rod 31b is pulled, the rivet tip is caulked (expanded) by the bulging portion 31a, and the pull rod 31b is further pulled to tear it off.

Further, ribs 33 are formed on the corners of the washer 17.

(Advantages of the Invention) According to the present invention as described above: (1) Since the stainless steel current collector plate 13 is mechanically coupled to the trolley main material 10 having high conductivity by using the coupling pin 27. When the current collecting surface H is worn, the current collecting plate 13 is used as the main material of the trolley.
Remove from 10 and replace only the current collector plate 13 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 removed from the trolley main material 10, good current-carrying performance between the current collector plate 13 and the trolley main body 10 can be secured, and current collection for trains and the like can be ensured. Good performance.

That is, generally, stainless steel has higher wear resistance than copper or aluminum but has low conductivity, but the pin holes 16 of the side wall 14 of the current collector plate are slightly charged with respect to the pin holes 15 of the trolley main material 10. Coupling pin at the time of assembly
Due to the restoring force (spring action) due to the bending of 27, the surface pressure of the contact surface between the current collector plate 13 and the trolley main material 10 is sufficiently secured,
Good electrical conductivity between the current collector plate 13 and the trolley main material 10 can always be ensured, and current collection performance and the like are good.

(3) Since the rivet head 19a holds the pin hole 16 portion of the both side walls 14 of the current collector plate 13 and its surroundings through the washer 17, it is possible to prevent the pin 27 from falling off due to vibration or impact. Also, the current collector plate 13 can be prevented from opening and the pin 27 can be prevented from coming off from the current collector plate 13. Furthermore, by tightening the side wall 14 of the current collector plate, the axial deviation between the current collector plate 13 and the trolley main material 10 can be suppressed and reduced.

(4) Since the lock rivet 19 is inserted into the pin 27 in the trolley wire head 12 and the washer 17 is arranged on the side wall of the current collector plate, for example, fit the bolt or cylinder nut to the web portion of the trolley main material. As compared with a structure in which both ends of the pin are held by an arm or the like, the number of parts is small and the device can be made compact. Moreover, since spaces can be secured on both sides of the web 10a portion of the trolley main material 11, the center of gravity S of the trolley wire can be accurately supported by the fasteners 32 when supported on the insulator 26 or the like as shown in FIG. Support for trolley wire is stable.

(5) The trolley main material head 12 on which the current collector plate is covered as in claim (2) is formed in an H shape having groove portions 12b at both ends in the pin length direction, and the inner surface of the groove portion 12b is formed. By forming the taper so as to come closer to the center line of the pin as it goes to the center of the pin length direction, the pin 27 can be supported and deflected at three points of the center and both ends. The spring action due to the bending of the pin 27 can be more effectively exerted, and the pin 27 can be prevented from being sheared.

[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 of FIG. 1, FIG. 3 is a front view showing a state of being supported by an insulator, and FIG. 4 is an exploded view. 5 is a perspective view of a rigid trolley wire at the time, FIG. 5 is a vertical cross-sectional partial view showing exaggeratedly the difference in curvature radius between the current collector plate and the trolley main material, and FIG. Fig. 7 is an example of using a rigid trolley wire, and is a longitudinal sectional view of a track for a tire type electric train. Fig. 8 is a longitudinal sectional view showing another embodiment. Figs. 9 and 10 show conventional examples. FIG. 10 …… Trolly main material, 12 …… Current collector, 12
b ... Groove, 14 ... Side wall, 15 ... Pin hole, 16 ... Pin hole, 17 ... Washer, 19 ... Lock rivet, 19a ...
Rivet head

Claims (2)

(57) [Claims] 1. A rigid trolley wire comprising a trolley main body made of highly conductive copper or aluminum having a convex cross-section and a stainless steel collector plate forming a collector surface. Form the plate in a U-shaped cross-section with both side walls and cover the head on the current collecting surface side of the trolley main material with pin holes for inserting connecting pins on both side walls of the trolley main body and the current collecting plate. Each of them is formed, and the pin holes of the current collector plate are slightly eccentric to the pin holes of the main material of the trolley, the hollow coupling pins are inserted into both pin holes, and they are locked in the engaging pins. A rigid trolley wire in which a rivet is inserted and the both ends of the lock rivet are used to hold the pin hole portions on both side walls of the current collector plate and the surroundings through lock washers. 2. The trolley main material head on which the current collector plate is covered has a cross-sectional shape of an H shape having grooves at both ends in the pin length direction, and the inner surface of the groove is on the center side in the pin length direction. The rigid trolley wire according to claim (1), wherein the rigid trolley wire is formed so as to be closer to the center line of the pin as it goes to.