JP2777684B2 - Rigid train line - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rigid train line laid parallel to a track to supply electricity to a running train or the like.

[0002]

2. Description of the Related Art Hitherto, a structure for connecting the ends of a frame of a rigid train line with a joint splicer has been known.

[0003] However, in this type of conventional connection structure, a pair of plate-shaped or rod-shaped joint splicers of a predetermined length are applied from both sides of the web portion of the gantry to form a sandwich.
The structure was such that the web of the gantry was tightened from both sides with fasteners composed of bolts and nuts.

[0004]

In the above-mentioned conventional connection structure, the bending strength and the bending rigidity at the connection portion of the gantry may be insufficient, and there is a problem in the electrical conductivity at the connection portion.

SUMMARY OF THE INVENTION It is an object of the present invention to increase the bending strength and the bending stiffness of a connecting portion without deforming a gantry, suppress a rise in temperature at a connecting portion, suppress an increase in electric resistance, and maintain a stable structure. An object of the present invention is to provide a rigid electric wire that can exhibit high current collection and electrical characteristics.

[0006]

SUMMARY OF THE INVENTION The present invention provides a substantially T-shaped cross section.
And a joint for connecting the ends of the frame with each other.
Pricer and trolley wire attached to the tip of the base
And an ear for clamping the trolley wire to the base.
The frame has a substantially T-shaped cross-sectional shape in which a flange portion is provided on a base end side and a bulging portion for ear attachment is provided on a distal end side, and the flange portion and the bulging portion are connected by a web. A state in which a pair of joint splicers are fitted from both sides into a pair of longitudinal recesses formed by the flange portion, the web, and the bulging portion, and the pair of joint splicers are pulled together by a caulking fastener and connected. At the base end surface and the distal end surface of the joint splicer, the inclined surface near the center surface of the lower surface of the flange portion adjacent to the web portion of the gantry, and the inclined surface of the bulging portion upper surface adjacent to the web portion of the gantry. , Respectively, to form an inclined surface on the base end surface and the distal end surface so as to be pressed in a wedge shape,
And it is configured to leave a minute gap between the web and the inner surface of the joint splicer ,
Is the contact surface facing the tip and the tip side of the contact surface.
The hook claw formed on the base comes into contact with the base end of the ear.
It has a sloping surface, and is attached to the base with fasteners
The ear to be operated cooperates with the locking claw of the base.
To engage with a pair of V-shaped locking grooves of the trolley wire.
It has a holding claw at the tip for holding
The trolley wire is in contact with the slope surface and cooperates with the slope surface to form
Pull to the end side, and make the curved convex surface of the trolley wire
At the base end, there is a gradient surface to be pressed against the contact surface.
In the locking claw of the stand and the locking groove on the side of the large fan-shaped part of the trolley wire
Form a gap between the surface and the ear claw
Part, between the inner surface of the locking groove on the side of the large fan-shaped part of the trolley wire,
A gap is formed, and the trolley wire is a pair
Two points where the locking groove of the abutment comes into contact with the locking claw and the holding claw.
And one point where the curved convex surface comes into contact with the contact surface of the gantry.
It was configured to be held at a total of three points .

[0007]

A pair of joint splicers are tightened by a caulking fastener to an inclined surface of a flange portion and a bulging portion adjacent to a web portion of a gantry (that is, an inclined surface located as close as possible to a center surface of the gantry). ), It can be firmly and stably fixed mechanically and electrically, does not loosen even after long-term use, and does not cause abnormal bending or electrical heating at the connection portion.

In addition, an inclined surface is formed near the center surface of the inner surface of the flange portion and the bulging portion on the side of the longitudinal concave portion adjacent to the web portion of the gantry, and the inclined surface is formed on the base end surface and the distal end surface of the joint splicer. Also, if an inclined surface is formed, and it is tightened with a caulking fastener to pull the pair of joint splicers,
The joint splicer enters the longitudinal recess of the gantry in a wedge shape.

Moreover, since a small gap remains between the web and the inner surface of the joint splicer, the pulling force (fastening force) of the caulking fastener is not killed, and the joint splicer as a wedge is moved in the longitudinal direction. It becomes the force to drive into the recess.

[0010] In this way, the inclined surface of the joint splicer is extremely strongly pressed against the inclined surface of the inner surface of the longitudinal recess of the gantry (without deforming the flange portion and the bulging portion), and the connection structure is formed. The bending strength and the bending rigidity can be significantly increased, and the conductivity is also improved. Also, the trolley line crosses
On the surface, a pair of V-shaped locking grooves of the trolley wire
Two points that contact the locking claw of the
The point where the curved convex surface of the line abuts against the abutment surface of the gantry
It is held at a total of three points.

[0011]

The embodiments will be described below in detail.

In the embodiment shown in the sectional views of FIGS. 1 and 2 and FIG. 3, 1 is a trolley wire, made of copper or copper alloy, and 2 is made of copper or copper alloy having a substantially T-shaped cross section. It is a mount.

The gantry 2 has a flange portion 3 attached to an insulator (not shown) at a base end (upper end in the drawing) and an ear mounting swelling portion 4 at a tip end. Web 5
And are integrally formed by an extruded member or a subsequent cold drawing process.

Reference numeral 6 denotes an ear for clamping the trolley wire to the gantry 2 and is made of copper or a copper-based alloy, and is manufactured by an extrusion material or a subsequent cold drawing process.

Reference numeral 7 denotes an ear fastener comprising a hexagon socket button bolt 7a, a cylindrical nut 7b, and the like. The ear fastener 7 extends through the bulging portion 4 of the gantry 2 in a direction perpendicular to the gantry center plane P. The ear 6 which is inserted through the hole 8 and has only one side as shown in FIG.
Or a pair of ears 6, 6 on both sides as shown in FIG.
It is to be attached to the pedestal bulging portion 4.

The trolley wire 1 has a pair of V
Having a U-shaped locking groove 9, 9
It is a substantially daruma shape combining the large fan-shaped part 11 with the tip side.

Accordingly, the trolley wire 1 has a curved convex surface 12 on the base end side (upward in the figure).

The gantry 2 has a lower end surface of the bulging portion 4 as an abutment surface 13 for contacting the curved convex surface 12 of the trolley wire 1. That is, the gantry 2 has an abutment surface 13 facing the tip direction (downward in the figure).

Further, a protruding ridge portion 14 having a small triangular cross-sectional shape is continuously provided on the distal end side of the contact surface 13 so that a locking claw portion to be inserted into the locking groove 9 inside the trolley wire 1. Form 15, 15.

A web 5 corresponding to the lower surface of the flange portion 3 and the center plane P, and a bulging portion 4 adjacent to the web 5
On the upper surface of the joint splicer 1 made of copper or copper alloy from both sides in a pair of formed longitudinal recesses 16, 16.
7, 17 are inserted.

That is, as shown in FIG.
The joint splicer 17 is disposed between the ends of the {for example, 6 m} bases 2, 2, and the bases 2, 2 are sequentially connected and arranged, and a continuous long trolley wire 1 is attached thereto. Can be

Reference numeral 18 denotes a caulking fastener, which comprises a pin member having an independent concavo-convex strip on the outer periphery and a collar or the like having a hole with an independent concavo-convex portion to be caught by caulking. And the web 5 at the end of the gantry 2
The hole is inserted in a skewered shape, and the pair of joint splicers 17, 17 are strongly attracted to each other and fixed.

However, inclined surfaces 19 and 20 are formed near the center plane P on the base end surface (upper surface in the figure) of the joint splicer 17 and near the center surface P on the distal end surface (lower surface in the figure). .

Further, in the gantry 2, inclined surfaces 21 and 22 are also formed on the lower surface of the flange portion 3 near the center plane P and on the bulging portion 4 near the center surface P.

In this manner, with the pair of joint splicers 17 and 17 being strongly pulled together by the caulking fastener 18 (see FIG. 1), the inclined surfaces 19 and 20 of the joint splicer 17 are connected. Is pressed against the inclined surfaces 21 and 22 of the gantry 2,
In the cross-sectional view, the joint splicers 17, 17 are pressed into the longitudinal recesses 16 of the gantry 2 from both sides in a wedge shape, and the contact portions of the gantry 2 and the joint splicer 1
Even if there are some errors in the manufacturing dimensions of the contact portions 7 and 17, the errors can be absorbed and the flange portion 3 can be stably fixed without being deformed.

In this manner, as shown in FIG. 5, the ends of the adjacent frames 2 and 2 are connected straight so as to form a straight line, and are subjected to an external force from the vertical direction in FIG. And extremely high rigidity and strength. In addition, the electric resistance at the gantry connection is reduced, and the temperature rise can be prevented.

In particular, as shown in the right half of FIGS. 1 and 3, between the web 5 and the inner surface of the joint splicer 17, the wedge is pressed so as to leave a small gap W. Care is taken not to disturb it.

Thus, on the base end surface (upper surface in the drawing) of the bulging portion 4 of the gantry 2, a stepped portion 23 parallel to the center plane P is formed outside the inclined surface 22 and further formed. An outwardly downwardly inclined surface 24 is continuously formed outward at a predetermined angle θ.

On the other hand, at the base end of the ear 6, as shown in FIG. 4, a locking bent piece 25 is formed, and its contact surface is a slope 26 having a predetermined angle β. The slope 26 is brought into contact with the slope 24 of the gantry 2.

Further, the tip of the ear 6 has a holding claw portion 27 which cooperates with the locking claw portion 15 of the gantry 2 and engages and engages with the pair of locking concave grooves 9 of the trolley wire 1. To have.

Accordingly, when the fastener 7 is tightened, the slope 26 at the base end of the ear 6 moves toward the center plane P while sliding on the slope 24 of the gantry 2, and the trolley wire 1 The trolley wire 1 is drawn toward the base end side (upward in the figure), and the curved convex surface 12 of the trolley wire 1 is pressed against the contact surface 13 of the gantry 2 (from below in the figure).

As is apparent from FIG. 3, a gap U is formed between the locking claw 15 of the gantry 2 and the inner surface of the locking groove 9 on the side of the large sector 11 of the trolley wire 1. Also, Year 6
A gap T is formed between the holding claw 27 of the trolley wire 1 and the inner surface of the locking groove 9 on the side of the large sector 11 of the trolley wire 1.

Therefore, in the cross section shown in FIGS. 3, 1 and 2, the pair of locking grooves 9, 9 are in contact with the locking claw 15 and the holding claw 27 at two points. In the present invention, the point is counted as one point, two points, including the surface contact. One point where the curved convex surface 12 contacts the contact surface 13 of the gantry 2 It is held at a total of three points.

Further, when the ears 6 and 6 are tightened to an appropriate value with the fastener 7, the inner end of the locking bent piece 25 of the ear 6 comes into contact with the stepped portion 23 of the gantry 2. , Regulates excessive tightening.

In this way, the trolley wire 1 is held at the most stable three points (in the cross section), and the trolley wire 1 is securely fixed (pinched) to the gantry 2 in a correct posture.

It should be noted that the angles θ and β described above are 8 ° to 8 °, respectively.
A range of 18 ° is preferred. In particular, the range of 10 ° to 16 ° is optimal.

Next, referring to FIG. 5, the operation of installing the rigid electric wire according to the present invention will be briefly described. First, the gantry 2 is attached to a ceiling or a wall of a tunnel through an insulator (not shown).
Next, joint splicers 17 and 17 and caulking fasteners 18 ...
Is connected to the adjacent frame 2.

Thereafter, the trolley wire 1 is temporarily attached to the gantry 2, and furthermore, the trolley wire 1 is fastened by ears 6.
Is fixed to the gantry 2.

It is preferable that the end faces of the mounts 2 and 2 are in contact with each other.

Next, a product according to the present invention illustrated in FIG. 1 and a plate-shaped joint splicer and a bolt
Connection structure by nut connection───The inner surface of the joint splicer abuts the web of the
The temperature rise t, the electric resistance r, and the vertical bending stiffness of the structure し た fastened by the nut connection are shown as percentages with the value of the middle seamless part (standard part) of the stand as 100. The measured values are shown in Table 1 below.

[0041]

[Table 1]

From the above Table 1, it can be seen that the connection structure using the ears 6, 6 and the caulking fasteners 18 of the present invention has a temperature rise of 10% to 20% as compared with the intermediate portion (standard portion) of the gantry 2 where there is no seam. The bending stiffness is reduced only by about 5% to 10% while the electric resistance is reduced by 0% to 10%.

On the other hand, in the conventional product, the temperature rise may be higher than the standard part, and the electric resistance may be 0% to
It can be seen that the bending rigidity is increased by 20% and the bending rigidity is reduced by 10% to 20%.

[0044]

According to the present invention, the following effects are exhibited by the above-described structure.

In the connection, the frames 2 and 2 can be effectively and stably connected firmly without deformation, and the mechanical bending rigidity and strength can be improved.

Particularly, as a rigid electric wire, a special surface treatment is not applied to the connection portion, so that the temperature rise at the connection portion can be suppressed low, and an increase in electric resistance can be prevented, so that a very preferable connection structure. Thus, in combination with the above effects, it can be said that the structure exhibits stable current collecting and feeding properties.

The connection operation is possible easily and quickly.

Further, since the inclined surfaces 19, 21; 20, 22 at positions as close as possible to the gantry center plane P are fixed by pressure welding, a strong and stable connection mechanically and electrically can be realized. Moreover, it is an excellent connection structure that does not loosen even after long-term use, and does not cause abnormal bending or electrical heating at the connection portion.

Also, the joint splicer 17 and
Even if there is some dimensional error in the mutual contact portion of the gantry 2,
Stablely fixed because it is rusted and pressed strongly
I can do it.  The trolley wire 1 is the most stable (in cross section)
Is firmly fixed to the gantry 2 in the correct posture.
I can wear it.

[Brief description of the drawings]

FIG. 1 is a sectional view showing an embodiment of the present invention.

FIG. 2 is a sectional view showing a modification of the present invention.

FIG. 3 is an explanatory diagram of shapes, dimensions, and the like of components of the present invention.

FIG. 4 is a cross-sectional view of an example of an ear.

FIG. 5 is a front view of a main part.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 trolley wire 2 gantry 3 flange 4 bulge for ear attachment 5 web 6 ear 7 fastener 9 locking concave groove 12 curved convex surface 13 abutment surface 15 locking claw 16 longitudinal recess 17 joint splicer 18 Caulking fastener 19 Inclined surface 20 Inclined surface 21 Inclined surface 22 Inclined surface 24 Inclined surface 27 Clamping claw W Minute gap P Central surface

──────────────────────────────────────────────────続 き Continuing on the front page (72) Katsuharu Nakajima, 8, Nishinocho, Higashikojima, Amagasaki-shi, Hyogo Mitsubishi Cable Industry Co., Ltd. (56) References JP-A-61-295138 (JP, A) JP-A-52-61804 (JP, U) JP-A-53-118211 (JP, U) JP-B-34-6354 (JP, A) B1) Tokiko Sho 52-7604 (JP, B2) Tokiko Sho 15-193 (JP, Y1) Toko Sho 27-6901 (JP, Y1) Toko Sho 49-35262 (JP, Y1) Toko Shoko 58 -19072 (JP, Y2) (58) Field surveyed (Int. Cl. ⁶ , DB name) B60M 1/23-1/30

Claims (1)

(57) [Claims] 1. A base having a substantially T-shaped cross section, and an end phase of the base.
Joint splicer to connect each other
A trolley wire attached to the end and the trolley wire attached to the base
Comprising a ear for clamping, the said cradle, substantially T-shaped flange portion on the base end side, with the ear mounting bulging portion on the distal end side, and ligated between the flange portion and the bulging portion at the web While having a cross-sectional shape, a pair of joint splicers are fitted from both sides into a pair of longitudinal recesses formed by the flange portion, the web, and the bulging portion, and the pair of joint splicers are swaged with a fastener. In the state where the joint splicer is pulled and connected, the base end surface and the distal end surface of the joint splicer are inclined near the center surface of the lower surface of the flange portion adjacent to the web portion of the gantry, and bulge adjacent to the web portion of the gantry. An inclined surface is formed on the base end surface and the distal end surface so as to be pressed in a wedge shape, respectively, on the inclined surface of the upper surface, and a minute gap is left between the web and the inner surface of the joint splicer. configured to, further, the above-mentioned The platform, abutment surface facing the distal direction
And a locking claw formed on the distal end side of the corresponding contact surface, and
The ear has a sloping surface that the base end of
The ear attached to the gantry with a tie is
A pair of V of the trolley wire cooperates with the locking claw portion of the gantry.
The claw that engages while engaging with the U-shaped locking groove
And having contact with the slope of the gantry
Cooperate to pull the trolley wire toward the base end,
The curved surface that presses the curved convex surface of
A locking claw portion of the base, a trolley wire
A gap is formed between the inner surface of the locking groove on the side of the large sector
And the ear claw part and the large fan-shaped part of the trolley wire
A gap is formed between the lock groove and the inner surface of the
In the cross section, the pair of locking grooves are formed with the locking claw portions.
The two points abutting on the clamping claw and the curved convex surface are
It is held at a total of three points, one point in contact with the contact surface of
A rigid train line characterized by the following configuration .