JPH0635265B2 - Rigid trolley wire - Google Patents

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. 10 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 of FIG. 10, 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,
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 or separated at the ends in the wire length direction. 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 of FIG. 11, a current collecting plate 47 made of stainless steel is formed in a U-shape and is covered with a reinforcing member 46 made of aluminum, and a current collecting portion is provided between both ears 45a of a trolley main member 45 made of aluminum. The current collector plate 47 is fixed to the trolley main material 45 by fitting the plate 47 and caulking the ears 45a.

Even with the structure shown in FIG. 11, 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, similarly to FIG. 10, the current collector plate 41 is apt to be displaced, peeled or buckled due to the difference in the coefficient of thermal expansion. Furthermore, current collector 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, which may increase the electric resistance at the time of current collection, 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, the surface pressure of the contact surface between the two is kept in order to maintain good conductivity. It is required to secure enough.

(Object of the Invention) An object of the present invention is to provide a rigid trolley wire in which a stainless steel collector plate is provided on a trolley main material having high conductivity, and to facilitate easy maintenance and replacement when the collector plate is worn. 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 current collector plate sandwiching portion compact and to save the number of sandwiching components.

(Technical Means for Achieving the Purpose) In order to achieve the above-mentioned object, the present invention provides a current collector plate having a U-shaped cross section having both side walls and a current collecting surface side of a trolley main material. Cover the head and form pin holes for spring pin insertion on both side walls of the trolley main material and the current collector plate,
The pin holes of the current collector plate are slightly eccentric to the pin holes of the main material of the trolley, and hollow cylindrical spring pins are inserted into both pin holes to make the current collector plate the head of the trolley main material. Press and insert the lock pin body into the spring pin, form female threads on both ends of the lock pin, screw the lock bolts to both female threads, and collect the current collector plate by the heads of both lock bolts. Both side walls are sandwiched.

(Function) Since the pin holes of the current collector plate are eccentric to the current collecting surface side of the pin hole of the trolley main material and the spring pins are inserted into the both holes, the spring pins are bent and the restoring force (spring Due to the action), the current collector plate and the end surface of the trolley main material on the current collector surface side are constantly in pressure contact with each other to ensure good electrical conductivity between the current collector plate and the trolley body.

Further, by removing the lock bolt and pulling out the lock pin body and the spring pin, the current collector plate and the trolley main material can be disassembled, whereby only the current collector plate can be replaced when the current collector plate is worn, and maintenance is easy.

Since both sides of the current collector plate are clamped by the bolt head,
It is possible to prevent the spring pin from falling off, prevent the side walls of the current collector plate from opening, and prevent the current collector plate and the trolley main material from being displaced 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.

(Example) FIG. 1 is an enlarged vertical cross-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 portion 1 at the base end portion (right end portion in FIG. 1).
1 is integrally formed, and thereby the cross-sectional shape is formed to be substantially convex (T-shaped), and a bulging 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 a pin hole 15 penetrating in the vertical direction is formed in the constricted portion 12a. Further, 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, groove 12
The width D of b is tapered so that it becomes narrower toward the waist 12a.

The current collector plate 13 is integrally provided with both side walls 14 and has a substantially U-shaped cross section. The current collector plate 13 covers the head 12 of the trolley main member 10 and has pin holes 16 in 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. Both holes 15, 1
A hollow swinging pin 27 having a C-shaped cross-section is inserted into 6 to connect the current collector plate 13 and the trolley main member 10 to each other. Tapers are formed at both ends of the spring pin 27 so that the spring pin 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 pin body 18 and a pair of upper and lower lock bolts 19 are provided to lock the spring pin 27. The lock pin main body 18 is formed in a solid shape, has internal threaded portions 18a at both ends in the pin length direction, and is inserted into the spring pin 27 so as to have a rattling P in the radial direction. Washers 17 are arranged in the pin holes 16 of the upper and lower side walls 14, respectively, and the upper and lower lock bolts 19 pass through the holes of the washer 17 and the pin holes 16 of the side wall 14, respectively, and the female screw portions 18a of the lock pin main body 18 respectively.
And is clamped by the bolt heads 19a via the washers 17 on the side wall 14 of the current collector plate. The washer 17 is integrally provided with a bent portion 17a for preventing rotation at the end portion of the trolley main member 10 on the flange 11 side, and thus the cross-sectional shape is formed in an L shape. FIG. 2 is a view taken in the direction of arrow II in FIG. 1, and the pin hole 16 of the current collector plate 13 is a long hole in the length direction of the trolley wire, whereby, for example, the trolley wire is bent into a curved shape. Sometimes, current collector 13 and trolley main material 1
The spring pin 27 absorbs the displacement in the length direction from 0, etc.
It is designed so that excessive load is not applied to it.

FIG. 3 is an exploded view of the lock pin body 18, which clarifies the structure of the lock pin body 18. Lock bolt 19
Both are, for example, right-handed threads, so that both can be tightened simultaneously.

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 19a) 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 of the rigid trolley wire when disassembled,
The pin holes (long holes) 16 of the current collector plate 13 are arranged, for example, at 60 cm intervals, and the pin holes 15 of the trolley main material 10 are also arranged at 60 cm intervals corresponding to the pin holes 16 on the current collector plate 13 side. There is.

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. Due to the spring action of both ends of the pin 27, the collector plate 13
The current collecting surface of the head bends 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. 7, a train 1 is equipped 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 this embodiment will be described in detail. Since the 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 pin holes 15 and 16 in FIG. As shown in an exaggerated manner in the drawing, the central portion of the spring 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 spring pin 27 are pin holes 16 of the side wall 14.
Of the spring pin 27 is pressed against the end surface on the side opposite to the current collecting surface H (direction of arrow A), so that both ends of the spring pin 27 have current collecting surface H.
Side, the central portion is bent so as to come to the side opposite to the current collecting surface side. Therefore, the restoring force (spring action) of the spring pin 27 urges the current collector plate 13 toward the direction of arrow A by the both ends of the pin, presses the current collector plate 13 against the head end surface of the trolley main member 10, and keeps it constant. Ensure surface pressure. Therefore, good electrical conductivity between the stainless steel collector plate 13 and the copper trolley main material 10 can be ensured.

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 pin length direction, and the inner surface of the groove portion 12b becomes closer to the center of the pin length direction toward the center of the pin. By forming the spring pin 27 so as to come to the side, the spring 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 spring pin 27 can be expected, and there is no concern that the spring pin 27 will be sheared between the current collector side wall 14 and the trolley main material head 12.

Further, by making the radius of curvature R2 of the current collector plate 13 in FIG. 6 slightly larger than the radius of curvature R1 of the head portion 12 of the trolley main material, the current collector plate 13 is bent by the action of the spring pin 27 during assembly. Further, 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. By the way, in the top wall portion of the current collector plate 13, electricity flows in the plate pressure direction so that the electric resistance is small. On the other hand, in the side wall 14 portion, electricity flows in the direction along the side wall 14, so that the electric resistance is large. As described above, due to the spring action of the spring pin 27 and the spring action of the current collector plate 13 itself, a sufficient surface pressure can be secured at the top wall portion where the electric resistance is low.

At the time of assembling, the head 1 of both bolts 19 in FIG.
Since the side wall 14 of the current collector plate is sandwiched by 9a, the spring pin 27 does not drop off due to vibration or impact of the shoe of the train, and the opening of the current collector plate 14 can be prevented. Prevent it from coming off.

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, and the spring pin 27 is utilized by utilizing the tip taper portion of the current collector side wall 14.
It is driven into the pin hole 16 and the pin hole 15 of the head 12. Then, the washer 17 is arranged and the lock pin body 18
Is inserted into the spring pin 27, and the upper and lower lock bolts 19 are respectively screwed into the female screw portions 18a of the lock pin 8. At this time, since both lock bolts 19 are both right-handed screws, both bolts 19 can be tightened at the same time.

Further, since the pin holes 16 of the current collector plate 13 are elongated holes, even if the current collector plate 13 and the trolley main material 10 are displaced in the axial direction during bending of the rigid trolley wire, the spring pin 2
7 can be prevented from being damaged, 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 rivet 19 and the washer 17 are removed and the spring pin 27 is removed to remove the current collector plate 13 as shown in FIG. 5 and replace only the current collector plate 13 with a new one. Replace with a thing.

(4) The washer 17 covers the pin hole (long hole) 16 to prevent rainwater and dust from entering.

(Another embodiment) (1) As shown by phantom lines in FIG. 4, between the pin holes 16 of the current collector plate 13 and between the pin holes 15 of the trolley main material 10, for example, three at equal intervals. Spare pin 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 pin holes 15a and 16a are used to arrange the spring pin 27 as close to the end as possible.

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

(3) As the lock pin 18, it is also possible to employ a hollow pipe having female threads formed at both ends as shown in FIG.

(4) If the washer 17 is not used, lock bolt 19
The diameter of the head portion 19a is increased so that the pin hole 16 can be completely surrounded even if the head portion 9a is located at the eccentric position of the pin hole 16 to prevent rainwater, dust and the like from entering.

(Effects of the Invention) As described above, according to the present invention: (1) Since the current collector plate 13 made of stainless steel is mechanically coupled to the trolley main member 10 having high conductivity by using the spring pin 27. 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 higher wear resistance than copper or aluminum but low conductivity, but the pin hole 16 of the side wall 14 of the current collector plate is slightly collected with respect to the pin hole 15 of the main material 10 of the trolley. With the restoring force (spring action) due to the bending of the spring pin 27 at the time of assembly,
Since the surface pressure of the contact surface between the current collector plate 13 and the trolley main material 10 is sufficiently ensured, it is possible to always ensure good electrical conductivity between the final current plate 13 and the trolley main material 10, and good current collection performance and the like. .

(3) Both side walls 14 of the current collector plate 13 are clamped by the bolt heads 19a via the washers 17,
The spring pin 27 can be prevented from coming off due to vibration or shock, and the current collector plate 13 can be prevented from opening so that the spring pin 2 can be prevented.
7 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 pin body 18 and the lock bolt 19 are inserted into the head portion 12 of the trolley main material, and the washer 17 is arranged on the side wall portion of the current collector plate, for example, a bolt or a cylinder is attached to the web portion of the trolley main material. Compared to a structure in which both ends of a pin are held by an arm or the like by fitting a nut, the number of parts is small and the size can be made compact. Moreover, trolley main material 1
Since a space can be secured on both side surfaces of the web 10a portion of No. 1, 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. 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, FIG. 3 is an exploded sectional view of a lock pin body, and FIG. 4 is supported by an insulator. FIG. 5 is a perspective view of a rigid trolley wire when disassembled, FIG. 6 is a longitudinal sectional partial view showing exaggeratedly the difference in curvature radius between the current collector plate and the trolley main material, and FIG. The figure is a schematic vertical cross-sectional view showing the flexure of the pin in an exaggerated manner. Fig. 8 is an example of the use of a rigid trolley wire. FIGS. 10 and 11 are vertical sectional views of a conventional example. 10 ... Trolley main material, 13 ... Current collector plate, 14 ... Side wall, 15 ... Pin hole, 16 ... Pin hole,
17: washer, 18: lock pin body, 19 ...
Lock bolt, 19a ... bolt head

Claims (1)

[Claims] 1. 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 current collector plate forming a current collecting surface, A 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. Pins for inserting spring pins on both side walls of the trolley main material and the current collector plate. Each hole is formed, the pin holes of the current collector plate are slightly eccentric to the pin holes of the main material of the trolley, and hollow cylindrical spring pins are inserted into both pin holes to attach the current collector plate. Press on the trolley main material head, insert the lock pin body into the spring pin, form female threads on both ends of the lock pin, screw the lock bolts on both female threads, A rigid trolley wire that holds both side walls of the current collector plate with its head.