JP2698875B2 - Rigid train line connection - Google Patents

Description

Description: BACKGROUND OF THE INVENTION (Industrial application field) The present invention relates to an improvement in a connection portion of a rigid train line laid in parallel with a track to supply electricity to a running train or the like.

(Prior art and its problems) A conventional rigid electric train line is provided with a steel base 40 having low conductivity which is not involved in energization as shown in FIG. 6, and a flange portion 41 of the base 40 is fixed to an insulator. Place a solid trolley main material 45 made of highly conductive copper (or aluminum) on 40,
It is fixed by a pair of ears 43. In order to connect the rigid train lines together, for example, a connecting core bar 46 is inserted into the gantry 40, and the gantry is mechanically connected by tightening with bolts 49, and the ear 43 is long in the direction of the train line. The trolley main material 45 is electrically connected to each other by providing the trolley.

According to this structure, the current collecting shoe of the train comes in direct contact with the copper trolley main member 45, so that wear is fast. In addition, since the connecting portion requires the metal core 46 for mechanical connection and the long ear 43 for electrical connection, the number of parts is increased and the connection work is troublesome.

As a countermeasure against the abrasion, it is conceivable that a stainless steel current collector plate 48 having a U-shaped cross section (crown shape) is put on the head of the trolley main member 45 as shown by a virtual line. The number of parts is further increased, and such a connection is inevitably expensive.

(Object of the Invention) An object of the present invention is to provide a component at a connection portion of a rigid electric wire having a wear-resistant and lightweight structure in which a current collecting surface is a stainless steel plate and a trolley main member is a hollow copper plate or an aluminum plate. An object of the present invention is to save points and prevent deformation of a trolley main member.

(Technical Means for Achieving the Object) In order to achieve the above object, the present invention provides a head member of a trolley main member having a substantially hat-shaped cross section made of a copper plate or an aluminum plate having high conductivity, and made of a stainless steel plate. In connecting the rigid electric wire covered with a current collector plate having a U-shaped cross section, a bolt insertion hole is formed on one side wall of the trolley main material, and the other side wall corresponding to the bolt insertion hole is formed on the other side wall corresponding to the bolt insertion hole. Form a cylindrical nut insertion hole, place a good conductive gold splicer on both sides of the trolley main material connected to each other, insert a bolt into one splicer and the bolt insertion hole of the trolley main material, The cylindrical nut having the portion is inserted into the other splicer and the nut insertion hole of the trolley main material, and the cylindrical nut and the bolt are screwed so that the tip of the cylindrical nut is pressed against the inner surface of one side wall of the trolley main material. Configuration.

(Operation) The tip of the cylinder nut inserted into the nut insertion hole comes into contact with the inner surface of one side wall of the trolley main member, so that the cylinder nut serves as a spacer between the side walls of the trolley main member. Prevents deformation of the trolley main material due to excessive tightening of bolts.

(Example) First, an example of a rigid body line structure suitable for a connection part of a rigid body line according to the present invention will be described. As shown in FIG. 4, the rigid train wire 9 is composed of a trolley main member 10 made of a copper (or aluminum) plate having high conductivity, a current collector plate 13 made of stainless steel having high wear resistance, and the like. . The trolley main material 10 is formed by bending a copper plate by press or roll forming to form a hollow hat-shaped (hat-shaped) cross-sectional shape having a flange portion 11 integrally at a base end (right end in FIG. 4). It has both side walls 10a and 10b and a tip head 12 which are parallel to each other. A bottom plate portion 11b that is bent toward the cross-section center line O3 of the train line is formed on both flange portions 11, and the bottom plate portion 11b is joined to the center line O3 portion of the train line by welding W. The bottom plate 11b is formed with a pair of steps 11a that bend toward the current collecting surface, so that the bottom plate 11 has a concave shape with its central portion recessed toward the current collecting surface. I have. Pin holes 15 are formed in both side walls 10a and 10b of the trolley main member 10 on the current collecting surface side.

The current collector plate 13 is formed to have a substantially U-shaped cross section by integrally providing both side walls 14, and the trolley main member 10
And a pin hole 16 is formed in both side walls 14.

The center line O2 of the pin hole 16 of the current collector plate side wall 14 is eccentric to the current collecting surface H by a slight eccentric amount c with respect to the center line O1 of the pin hole 15 of the trolley main member 10. A hollow connecting pin (spring pin) 27 having a C-shaped cross section penetrates the holes 15 and 16, thereby connecting the current collector plate 13 and the trolley main member 10. Both ends of the pin 27 are tapered 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 disposed in each of the pin holes 16 of the current collector side wall 14, and a lock rivet 19 is inserted into the hole 22 of the washer 17 and the coupling pin 27. The pin holes 16 of the side wall 14 of the electric plate and the periphery thereof are clamped via washers 17. The washer 17 is integrally provided with an anti-rotation bent portion 17a at an end of the trolley main member 10 on the flange portion 11 side. The diameter of the lock rivet 19 is slightly smaller than the inner diameter of the coupling pin 27, so that the diameter of the coupling pin 27 can be reduced to an elliptical shape. That is, in the cross section of the pin 27 in the pin inserted state, the hollow portion keeps a normal circular shape, but both ends are reduced in diameter between the end surface of the pin hole 15 on the current collecting surface side and the end surface of the pin hole 16 on the flange portion side. Then, a spring action is exerted, and the current collector 13 is pressed against the head 12.

FIG. 5 is a view taken in the direction of the arrow V in FIG.
Numeral 16 is a long hole extending in the length direction of the train line, so that, for example, when the train line is bent in a curved shape, the current collector plate 13 is formed.
And the trolley main material 10 in the longitudinal direction, etc.
So that an unreasonable load is not applied.

The flange portion 11 of the trolley main member 10 is supported by an insulator such as a parapet or a train line support device.

Next, a connection portion of the rigid electric wire according to the present invention will be described. FIG. 3 is an exploded perspective view of a connecting portion of the rigid electric wires, and the splicers 31a and 31b for connecting the rigid electric wires are made of a material having high conductivity such as copper and have the same length. It is formed long in the vertical direction. One splicer 31a is formed with four bolt insertion holes 35a at intervals in the length direction, and the other splicer 31b is formed with a cylindrical nut insertion hole 35b at a position corresponding to the bolt insertion hole 35a. I have.

The two splicers 31a and 31b are arranged on both sides over both connected train lines, and are connected by four bolts 34 and four flanged cylinder nuts 33.

FIG. 1 is an enlarged cross-sectional view of a bolt insertion hole portion. A bolt insertion hole 36a corresponding to a bolt insertion hole 35a of one splicer 31a is provided on one side wall 10a of the trolley main member 10.
Is formed, and the other splicer 31b is formed on the other side wall 10b.
A nut insertion hole 36b corresponding to the nut insertion hole 35b is formed. At least the diameter of the bolt insertion hole 36a of the side wall 10a is smaller than the outer diameter of the cylinder nut 33, for example, is substantially the same as the inner diameter of the cylinder nut 33. Can come into contact with

The bolt 34 is inserted from above into the splicer 31a and the bolt insertion holes 36a, 35a of the trolley main member side wall 10a,
The cylinder nut 33 is inserted from below into the other splicer 31b and the nut insertion holes 35b and 36b of the trolley main material side wall 10b,
By screwing into the bolt 34, the two spurcers 31a and 31b are tightened between the head of the bolt 34 and the flange 33a of the cylinder nut 33, and at the same time, the leading edge 33b of the cylinder nut 33 is fixed to one side wall 10a.
By contacting the inner surface (the periphery of the bolt insertion hole 36a), excessive tightening is prevented.

Incidentally, the length d5 from the flange portion 33a of the cylinder nut 33 to the tip edge 33b is the distance between the side walls 10a and 10b before tightening.
d1, the thickness d2 of the other side wall 10b, and the other splicer 3
1b is formed slightly shorter than the total dimension of the length d3 of the nut insertion hole 35b, whereby the other splicer 31 is formed.
The tightening allowance of b is secured. That is, the cylindrical nut tip edge 33b abuts against the inner surface of the side wall 10a in a state where the other side wall 10b is slightly bent by a predetermined amount at the time of tightening.

The cylindrical nut flange 33a has cut-off surfaces 60 on both sides to prevent rotation, and the cut-off surface 60 is attached to the splicer 31b.
The groove 61 is engaged with a side edge of the groove 61. Splicers 31a, 3
Ears extending toward the current collecting surface side at the end of the current collecting surface side of 1b
When the bolts are tightened, the side portions 14 of the current collector plate 13 are clamped by the lugs 37, and both ends of the connecting pin 27 located at the end of the train line are clamped undetachably. .

FIG. 2 is a view taken in the direction of the arrow II in FIG. 1, and the ear portion 37 is formed over the entire length of the splicer 31a (31b) in the length direction of the trolley line. A hexagonal hole is formed in the head of the bolt 34.

The operation of this embodiment will be described in detail. When connecting rigid train lines, ends of the rigid train lines 9 are butted together at a butt surface M as shown in FIG. At 15 (16), the connecting pin 27 is also inserted, and splicers 31a and 31b are arranged on both side surfaces of both trolley main members 10 as shown in FIG. Thus, the train lines are mechanically connected to each other, and the current collectors 13 are electrically connected to each other via the ears 37 of the splicers 31a and 31b. As shown in FIG. 1, when the tip 33b of the cylinder nut 33 contacts the inner surface of the one side wall 10a, the cylinder nut 33 serves as a spacer, and the hollow trolley main member 10 is unnecessarily bent (deformed). Absent.

In addition, both pin holes 15 and 16 in FIG.
6, the pin 27 is pressed into contact with the pin hole 15 of the trolley main member 10 on the end face on the current collecting surface H side, as shown in FIG. The pin hole 16 of the current collector plate 13 is pressed against the end face on the side opposite to the current collecting surface H side (the direction indicated by the arrow A), and as described above, the cross section of the pin 27 has a normal central portion. While maintaining a circular shape, both ends are reduced in elliptical shape. Therefore, the current collecting plate 13 is urged in the direction of arrow A by the restoring force (spring action) of the pin 27, and the current collecting plate 13 is pressed against the head 12 of the trolley main member 10 to secure a constant surface pressure. Therefore, good electrical conductivity can be ensured between the stainless steel current collector 13 and the copper trolley main material 10.

At the time of assembly, the head 19 of the rivet 19 shown in FIG.
a and the washer 17 pinch the pin hole 16 of the current collector side wall 14, and the connecting portion is pinched by the ears 37 of the splicers 31a and 31b. Does not fall off, and the opening of the current collector 14 can be prevented, so that the pins 27
To prevent slippage.

Further, since the pin holes 16 of the current collector plate 13 are elongated, mutual axial displacement between the current collector plate 13 and the trolley main member 10 can be absorbed during bending of a rigid electric wire or the like.

When the current collector 13 is worn out and replaced, the lock rivet 19 and the washer 17 are removed and the pin 27 is removed, so that only the current collector 13 is replaced with a new one.

(Another embodiment) (1) As the main material of the trolley, an aluminum plate having high conductivity can be used instead of the copper plate as described above.

(2) As a material of the splicers 31a and 31b, aluminum or its alloy can be used in addition to copper or its alloy.

(3) Instead of the lock rivet 19 for holding the pin 27 for connecting the current collector plate, a pull-out type so-called blind rivet can be used. Lock bolts and nuts can be used instead of rivets.

(Effects of the Invention) As described above, according to the present invention: (1) Both rigid and mechanical splicers 31a, 32 of copper or the like are used to make both mechanical and electrical connections at the rigid electric wire line connection part. Therefore, the number of parts can be reduced.

(2) The tip 33b of the cylinder nut 33 at the time of bolt tightening comes into contact with the inner surface of the side wall of the trolley main member 10, so that the cylinder nut 33 serves as a spacer, and the hollow trolley main member 10 is excessively bent due to excessive tightening or the like. (Deformation) does not occur.

 Therefore, the fastening operation can be performed easily and accurately.

(3) Since the current collecting plate H is provided with the current collecting plate 13 made of stainless steel, the wear resistance is improved, the number of replacements is reduced, and maintenance and the like are facilitated.

(4) Flange 11 directly on trolley main material 10 with high conductivity
6, the stainless steel base that does not participate in the current supply can be omitted, and the trolley main member 10 itself is formed in a hollow shape by a copper (or aluminum) plate. In comparison, the number of parts can be saved and the weight can be reduced.

[Brief description of the drawings]

FIG. 1 is an enlarged vertical cross-sectional view (enlarged cross-sectional view taken along the line II of FIG. 2) of a connecting portion of a rigid electric wire to which the present invention is applied, FIG. FIG. 4 is an exploded perspective view of a connection portion of the rigid electric wire, FIG. 4 is a longitudinal sectional view of an IV portion of FIG. 3 of the rigid electric wire,
FIG. 5 is a view taken in the direction of arrow V in FIG. 4, and FIG. 6 is a longitudinal sectional view of a conventional example. 10: Trolley main material, 10a, 10b: Trolley main material side wall, 11: Flange part, 12: Head, 13: Current collector plate, 31
a, 31b: splicer, 33: cylinder nut, 33a: collar, 34: bolt, 35a, 36a: bolt insertion hole, 35
b, 36b ... Nut insertion hole

Continuation of the front page (56) References JP-A-59-29521 (JP, A) JP-A-61-295138 (JP, A) JP-A-2-99430 (JP, A) , U) Japanese Utility Model Showa 62-4432 (JP, U) Japanese Utility Model Showa 62-168944 (JP, U) Japanese Utility Model Showa 63-107239 (JP, U) 6-18826 (JP, Y2) JP 6-11225 (JP, Y2) JP 6-104429 (JP, B2)

Claims (1)

(57) [Claims] 1. A rigid electric wire having a generally hat-shaped trolley main member made of a highly conductive copper plate or aluminum plate and a U-shaped current collector plate made of a stainless steel plate put on a head thereof. In connecting the trolley main member, a bolt insertion hole is formed on one side wall of the trolley main member, and a cylindrical nut insertion hole is formed on the other side wall corresponding to the bolt insertion hole. On both sides, a good conductive metal splicer is arranged, a bolt is inserted into one splicer and the bolt insertion hole of the trolley main material, and a cylindrical nut having a flange portion is inserted into the other splicer and the nut insertion hole of the trolley main material. A connection portion for a rigid electric wire, wherein the tube nut and a bolt are screwed so that the tip of the tube nut is pressed against the inner surface of one side wall of the trolley main member.