JPH0715791Y2 - 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. 11 shows a conventional example, in which a stainless steel current collector plate is used.
This is a structure in which 41 is pressed against a convex trolley main material 40 made of copper or aluminum by hot extrusion.

In the structure of FIG. 11, when the wear of the current collector plate 41 reaches 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,
As a result, the current collector plate 41 and the trolley main material 40 may be displaced in the length direction or peeled off at the end portions in the wire length direction, which may cause a failure in energization.

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 of FIG. 12, a stainless steel current collector plate 47 is formed in a U-shape and covered with an aluminum reinforcing member 46,
Current collector plate 4 made of aluminum trolley main material 45 between both ears 45a
The current collector plate 47 is fixed to the trolley main member 45 by fitting 7 and crimping the ear portion 45a.

Even in the structure shown in FIG. 12, 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. 11, 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) 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 due to displacement of the current collector plate due to difference in thermal expansion coefficient, etc., and to ensure excellent electrical conductivity between the current collector plate and the trolley main material. Further, it is also an object of the present invention to make the holding portion of the current collector plate compact 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 a trolley made of highly conductive copper or aluminum or the like having a convex cross-sectional shape. In a rigid trolley wire comprising a main material 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 trolley main material is collected. Cover the head on the side of the electric surface and form pin holes on both side walls of the trolley main material and the current collector,
The pin hole of the current collector plate is slightly eccentric to the pin hole of the main material of the trolley, the hollow coupling pins are inserted into both pin holes, and the current collector plate is pressed against the head of the main material of the trolley. , Form a female screw on the inner peripheral surface of the connecting pin, screw the lock bolts into the pin from both ends of the pin, and hold the both side walls of the current collector plate by the heads of both lock bolts. ing.

The invention according to claim (2) is provided with a trolley main material made of highly conductive copper or aluminum or the like having a convex cross-sectional shape, and a stainless steel current collector plate forming a current collecting surface. In a rigid trolley wire, the current collector plate is formed into 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. Form each pin hole, slightly eccentric the pin hole of the current collector plate to the pin hole of the main material of the trolley, and insert hollow coupling pins into both pin holes to attach the current collector plate. Press on the head of the trolley main material, form a female screw on the inner peripheral surface of the connecting pin, form a flange on one end of the pin, and screw a locking bolt from the side opposite to the flange to lock. The heads of the bolts and the brims of the pins hold the side walls of the current collector plate.

(Operation) The pin holes of the current collector plate are eccentric to the current collecting surface side of the pin holes of the main material of the trolley, and the connecting pins are inserted into both holes. Due to the (spring action), the current collector plate and the end surface of the trolley main material on the current collecting surface side are always in pressure contact with each other to ensure good electrical conductivity between the current collector plate and the trolley body.

Further, by removing the bolt and pulling out the pin, the current collector plate and the trolley main material can be disassembled, so that when the current collector plate wears, 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 heads or the bolt heads and the brim of the pin, not only the pin is prevented from falling off, but also the side walls of the current collector plate are prevented from opening and the current collector plate and the trolley. It is possible to prevent the lengthwise deviation from the main material. 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 It is composed of a highly wear-resistant stainless steel collector plate 13 and the like. 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 12 at the tip
Are integrally formed. The head 12 is in the pin length direction (first
Grooves 12b are provided at both ends (in the vertical direction in the figure), thereby forming a constriction 12a at the center. 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. Further, the inner surface of the groove 12b is formed in a tapered shape so as to come to the pin hole center line side as it goes to the constricted portion 12a side.

The current collector plate 13 is integrally formed with both side walls 14 so that its cross-sectional shape is formed into a generally U-shape, and the head 12 of the trolley main material 10 is covered with the pin holes 16 on both side walls 14. Has been formed.

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. The above-mentioned both holes 15 and 16 have a sectional shape C
A hollow connecting pin 27 having a hollow shape is inserted so that the current collector plate 13 and the trolley main material 10 are connected to each other. The pin 27 has an internal thread 27a formed on the inner peripheral surface thereof, and taper is formed at both ends of the pin 27.
Even if they are displaced from each other, they can be easily inserted into the pin holes 15 and 16.

A washer 17 is arranged in each of the pin holes 16 of the current collector side wall 14, and a pair of upper and lower lock bolts 19 are respectively inserted into the pin hole 16 of the current collector side wall 14 from above and below and a pin 27 is inserted. It meshes with the screw portion 27a. Then, both bolt heads 19a hold a part of the side wall 14 of the current collector plate around the pin hole 16 through a washer 17. Washer 17 is trolley base material 10
Is integrally provided with a bent portion 17a at the end on the flange 11 side of
The bent portion 17a abuts on the end surface of the head portion 12 on the side of the flange portion 11 and thereby stops rotation of the washer 17.

FIG. 2 is a view taken in the direction of arrow II in FIG. 1 and shows the pin hole 16 of the collector plate 13.
Is a long hole in the length direction of the trolley wire, so that, for example, when bending the trolley wire into a curved shape, the current collector plate
Absorbs lengthwise deviation between the trolley main material 10 and the trolley 10,
No excessive load is applied to 27.

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

Both the current collecting surface H of the current collecting plate 13 and the tip end surface of the head 12 of the trolley main member 10 are formed in a gentle arc shape. The radius of curvature R2 of the current collector plate 13 is slightly larger than the radius of curvature R1 of the main material head 12, and the pin 27 when assembled
The current collecting surface of the current collector plate 13 is bent by the spring action of both ends of the, so that the radius of curvature becomes substantially the same as the radius of curvature R1 of the head 12.

FIG. 9 shows an example of using 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 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 surface 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 provided with the side wall 14.
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 central portion is opposite to the current collecting surface side. Bends to come to. Accordingly, the restoring force (spring action) of the pin 27 urges the current collector plate 13 toward the arrow A direction at both ends of the pin, so that the current collector plate 13 is moved to the trolley main member 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 member 10 is formed into an H shape having the groove portions 12b at both ends in the pin length direction, and the inner surface of the groove portion 12b becomes closer to the center of the pin in the length direction of the pin. By forming the pin 27 so as to come to the side, the pin 27 is supported at three points of its both ends and the central part.
Therefore, a large spring effect due to the bending of the pin 27 can be expected,
On the other hand, 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 slightly increasing the radius of curvature R1 of, due to the bending of the current collector plate 13 due to the action of the pin 27 during assembly,
The top wall portion of the current collector plate 13 and the end face of the trolley head 12 are pressed against each other more strongly, so that 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 pin 27 and the spring action of the current collector plate 13 itself as described above, the surface pressure at the top wall part having a low electric resistance is sufficient. It can be secured.

At the time of assembly, since the side wall 14 of the current collector plate is held by the bolt heads 19a of FIG. 1, the pin 27 does not fall off due to vibrations or shocks of the train shoe, and the current collector is It is possible to prevent the plate 14 from opening and prevent the pin 27 from coming off.

When assembling the current collector plate 13 and the trolley main material 10,
13 is put on the head 12 of the trolley main material, and the pin 27 is driven into the pin hole 16 of the side wall 14 of the collector plate and the pin hole 15 of the head 12 by utilizing the tip taper portion thereof. Then, the washer 17 is arranged and the lock bolt 19 is screwed to the female screw 27a of the pin 27.

In addition, by making the pin hole 16 of the current collector plate 13 a long hole,
Even when the axial position of the current collector plate 13 and the trolley main material 10 is displaced during bending of the rigid trolley wire, damage to the pin 27 can be prevented,
Further, residual stress between the both 13 and 10 can be reduced, and buckling of the current collector plate 13 can be prevented.

If the current collector plate 13 becomes worn and needs replacement, use the lock bolt.
By removing 19 and removing the pin 27, 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.

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

(Another embodiment) (1) As shown by the phantom line in FIG.
For example, three spare pin holes 15a and 16a (so-called dead holes) are formed at equal intervals, for example, between 16 and between the pin holes 15 of the trolley main material 10.

The rigid trolley wire has, for example, a fixed length of 7.5 m, and these are successively added. However, when the dimensions are matched on the spot, a random-sized product appears and the fixed-length product is 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 trolley main material.

(3) In the embodiment shown in FIG. 8, a collar portion 27b is formed at one end of a C-shaped pin 27 having a sectional shape, and the head portion 12 is fully penetrated into the pin 27 from the direction opposite to the collar portion 27b. 1 lock bolt
This is an example in which 19 is screwed. That is, the side wall 14 of the current collector plate is held by the pin collar portion 27b and the bolt head portion 19a. The collar portion 27b has a notch portion 29 as shown in FIG. 9 so that the detent tool can be engaged.

(4) FIG. 10 shows a modified example of the washer 17, in which the bent portion 17a is brought into contact with the edge of the side wall 14 of the current collector plate.

(5) The present invention can also be applied to a rigid trolley wire without the groove 12b of the head 12 as shown in FIG.

(6) The washer 17 can be omitted. In that case, the head 19a of the lock bolt 19 or the head 19 and the pin 2
The collar 27b of 7 is enlarged so that the head is placed at the eccentric position of the pin hole 16.
It is possible to completely surround the pin hole 16 even if the 19a and the brim portion 27b are located.

(Effects 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 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 it is possible to collect electricity on a train or the like. Good electrical 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 27 when assembled by shifting to the surface side
Because the restoring force (spring action) due to the flexure of the current collector ensures a sufficient surface pressure at the contact surface between the current collector plate 13 and the trolley main material 10, the conductivity of the current collector plate 13 and the trolley main material 10 is always maintained. Can be secured well and the current collection performance is good.

(3) Since both side walls 14 of the current collector plate 13 are clamped by the bolt head portion 19a or the pin collar portion 27b,
Not only can the pin 27 be prevented from falling off due to vibration or shock, but also the collector plate 13 can be prevented from opening and the pin 27 can be prevented from coming off from the collector plate 13.

(4) Since the lock bolt 19 is inserted into the pin 27 in the trolley wire head 12, for example, a structure in which both ends of the pin are held by arms by fitting a bolt or a cylinder nut to the web portion of the trolley main material In comparison, the number of parts is small and it can be made compact. Moreover, the trolley main material 11 web 10
Since a space can be secured on both side surfaces of the a portion, the center of gravity S of the trolley wire can be accurately supported by the fastener 32 when supporting the insulator 26 etc. as shown in FIG. 4, and the trolley wire is stably supported. .

[Brief description of drawings]

FIG. 1 is an enlarged vertical cross-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 perspective view of the rigid trolley wire when disassembled, and FIG. 4 is an insulator. FIG. 5 is a front sectional view showing a state in which the current collector plate and the trolley main material are exaggerated to show the difference in curvature radius between the current collector plate and the trolley main material, and FIG. A schematic diagram, Fig. 7 is an example of use of a rigid trolley wire, a longitudinal sectional view of a track for a tire type electric train, Fig. 8 is a longitudinal sectional view showing another embodiment, and Fig. 9 is a view taken along the line IX in Fig. 8. Figure,
FIG. 10 is a vertical sectional view showing a modified example of the washer, and FIGS. 11 and 12 are vertical sectional views of a conventional example. 10 ... Trolley main material, 12 ... Head, 13 ... Current collector, 14 ... Side wall, 15
… Pin hole, 16… Pin hole, 17… Washer, 19… Lock bolt, 19a… Head, 27… Pin, 27b… Collar part

Claims (2)

[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 in a U-shaped cross-section with both side walls, and is covered on the head on the current collecting surface side of the trolley main material, and pin holes are formed on both side walls of the trolley main material and the current collector plate, respectively. Then, the pin hole of the current collector plate is slightly eccentric to the pin hole of the trolley main material on the current collecting surface side, and hollow coupling pins are inserted into both pin holes to place the current collector plate on the trolley main material head. , And form a female thread on the inner peripheral surface of the coupling pin, screw the lock bolts into the pin from both ends of the pin, and hold both side walls of the current collector plate by the heads of both lock bolts. Rigid trolley wire. 2. A rigid trolley wire comprising a trolley main material made of highly conductive copper or aluminum having a convex cross-section and a stainless steel collector plate forming a collector surface. , The current collector plate is formed in a U-shaped cross-section with both side walls, and is covered on the head on the current collecting surface side of the trolley main material, and pin holes are formed on both side walls of the trolley main material and the current collector plate, respectively. Then, the pin hole of the current collector plate is slightly eccentric to the pin hole of the trolley main material on the current collecting surface side, and hollow coupling pins are inserted into both pin holes to place the current collector plate on the trolley main material head. To form a female thread on the inner peripheral surface of the connecting pin, form a flange on one end of the pin, and screw a locking bolt from the side opposite to the flange to lock the head of the locking bolt. A rigid trolley wire that holds both side walls of the current collector plate by means of the brim of the pin.