JPS6246725A - Manufacture of trolley duct - Google Patents

Abstract

PURPOSE:To prevent occurrence of step at the joint of travelling face of wheel by cutting the housing laterally to remain the travelling face of wheel then bending the housing such that the current collecting trolley will travel while describing a curved locus. CONSTITUTION:When manufacturing, plural cuts 2 are made laterally in the housing 1' having wheel travelling face 1a in the longitudinal direction. Then the housing 1' is bent to have desired curvature thereafter the seams or reinforcing boards are welded to produce single complete housing 1'' having specific curvature. Here, the supporting sections of plural conductors 3 are secured to the housing 1''. Respective conductor 3 is previously bent with approximately same curvature with that of the housing 1''. In such trolley duct 5, step will never occur on the wheel travelling face 1a even if the housing 1'' is bent.

Description

[Detailed description of the invention] 〔Technical field〕 The present invention relates to a method for manufacturing a trolley duct.

[Background technology]

The trolley duct has a duct-shaped housing and a conductor housed longitudinally within the housing. Inside the housing, a wheel running surface for a current collection trolley that runs while receiving power from the conductor is further provided along the longitudinal direction.

When the current collector comes into contact with the conductor, the current collecting trolley moves, and power is supplied from the current collecting trolley to the running lane.

When constructing a trolley duct, the trolley duct is often provided with a curved portion in the longitudinal direction so that the current collecting trolley travels along a curved track.

Next, a conventional method for manufacturing a trolley duct having a curved portion along the longitudinal direction (the traveling direction of the current collecting trolley) will be described.

FIG. 5 shows the main steps of a conventional trolley duct manufacturing method in order. FIG. 6 shows the current collecting trolley running along the completed trolley duct.

First, as shown in FIG.
, 51d. Next, as shown in FIG. 5(b), these divided housing pieces are assembled to form a desired bend, and then assembled into a single housing 52 by a method such as welding. . Thereafter, as shown in FIG. 5(C), the conductor 53, which has been separately bent, is placed in the housing 52. In this way, a curved trolley duct 50 is created.

However, the trolley duct 50, which is made of short housing pieces joined together, inevitably has problems at the joints.
A step is formed on the wheel running surface. In Figure 6,
Joint A between running surface 54a and running surface 54b, and running surface 5
There are two steps at the joint A2 between the running surface 4b and the running surface 54C. If a step is created on the wheel running surface, the wheels 56 will bounce up at the step while the current collecting trolley 55 is running. When this happens, the current collector 57 momentarily moves to the conductor 53.
Since it will move away from , an arc will occur. Therefore, the power supply from the conductor 53 is disturbed, and in severe cases, the current collector 57 and the conductor 53 are damaged. Also, wheel 5
The springing up and generation of arcs in No. 6 also cause noise.

[Purpose of the invention]

SUMMARY OF THE INVENTION In view of the above-mentioned problems, it is an object of the present invention to provide a method for manufacturing a trolley duct that allows a current collector trolley to run smoothly without shaking even if the trolley duct has a bent portion. Disclosure] In order to achieve the above-mentioned object, the present invention is arranged so that a conductor is housed along the longitudinal direction, and the wheel running surface of the current collecting trolley that runs while receiving electricity from the conductor is arranged along the longitudinal direction. A method for manufacturing a trolley duct including a step of bending a provided housing so that the current collector trolley runs on a curved track, and cutting in the lateral direction of the housing so that the wheel running surface remains. The present invention is directed to a method for manufacturing a trolley duct, which comprises bending the housing so that the current collecting trolley is suitable for traveling along a curved track after the current collecting trolley is formed.

Hereinafter, embodiments of the present invention will be described in detail with reference to the accompanying drawings.

FIG. 1 shows the main steps of an embodiment of the method for manufacturing a trolley duct according to the present invention in order.

Figure 2 shows the current collecting trolley running along the completed trolley duct.

As seen in FIG. 1 (al), a first
As shown in Figure (b), a plurality of cuts 2 are made from the lateral direction. The housing 1 is usually made by roll molding. As shown in FIG. 1(f), which shows a cross section of the portion of the housing 1' where the cuts 2 have been made, the cuts 2 are made so that the wheel running surfaces 1a and la remain. After this cut 2 is made, the housing 1' is bent so as to have a desired curvature, as shown in FIG. 1(C). When the housing 1 is bent, the outer portion is slightly stretched and bent, so the housing 1 is made of a steel material, an aluminum material, or the like. Furthermore, by welding the seams and welding the reinforcing plates, the housing 1'' with the desired curvature is made into a complete single housing 1''.As shown in Fig. 1 Fdl,
Three conductors 3 combined by the conductor support part 3a
is housed within the housing by fixing the conductor support portion 3a within the housing. The conductor 3 is usually pre-bent to approximately the same curvature as the bending curvature of the housing 1''.

Finally, as shown in FIG. 1(e), the trolley duct 5 is completed. Wheel running surface 1a.

Since the cut 2 was not made in 1a, the wheel running surface 1a of the completed trolley duct 5.

There are no stepped areas in 1a. Therefore, as shown in FIG. 2(a), the current collecting trolley 1
Even if the current collector trolley 10 runs with the wheels 1) in contact with the wheel running surfaces 1a, la, the wheel running surfaces 1a,
Since there is no step at all on la, the wheel 1) will not jump up.

Even if the trolley duct 5 has a bent portion, the current collector trolley 10 runs smoothly, so that the power supply from the conductor 3 to the current collector 12 is stable, and no noise is generated.

Since the trolley duct 5 shown in FIGS. 2(a) and 2(b) is bent into a horizontal arc shape, the current collecting trolley also travels along a horizontal arc trajectory.

Note that the trolley duct 5 is connected to the ceiling surface (
(not shown). The current collection trolley 10 is configured to move until the guide ring 14 comes into contact with the guide groove 15 of the housing 1#.

Therefore, the vibration of the current collection trolley 10 in the left and right direction is reduced. The current collector 12 is supported by a spring (not shown) or the like (
The feces are designed to move elastically up and down. Therefore, the current collector 12 is always in stable contact with the conductor 3. The power received from the collector 12 is transferred to the cable 16
Power is supplied to the lanes that the vehicle runs through.

Next, a third example will be described in which the housing of the trolley duct is bent so that the current collecting trolley runs on a curved track having height differences along the traveling direction.
This will be explained with reference to the figures and FIG.

FIG. 3 shows the main steps of bending the housing so that the running surface of the wheels of the current collecting trolley is uphill. Figure 3 (Housing 2 as seen in al.
The process is the same as before until the notch 21 is made at 0. After that, as shown in Fig. 3 (C1), the housing is bent upward, and the reinforcing plate 23 is applied to the ceiling surface 20''a of the housing 20'', and the bent state is maintained by welding, etc. Of course, after that, this housing 20" is fixed inside the housing 20".
A conductor (not shown) having a curved shape similar to that shown in FIG. is seamless and continuous.Therefore, the current collection trolley runs smoothly along the trolley duct.

Figure 4 shows that the housing where the cut is made originally has a horizontal arc shape in the longitudinal direction, and the wheel running surface is an uphill slope up to the middle of the housing, and then downhill from there. This diagram shows the main steps involved in bending. In other words, the wheel running surface is a three-dimensional track. Figure 4 (
After making a notch 31 as shown in Fig. 4('b) in the housing 30 as shown in Fig. 4(a), bend it so that the center of the housing 30'' is the highest as shown in Fig. 4(C1). Place the reinforcing plate 33 on the housing 30''
Place it on the ceiling surface 30#a and fix it by welding or the like so that the bent state is maintained. Naturally, after that, a conductor (not shown) having the same bent shape as the housing 30'' is housed inside the housing 30''. In this way, the trolley duct is completed. In this case as well, since the cut 31 is not made in the wheel running surface 30a, the wheel running surface 30a is seamlessly continuous. Therefore, the current collecting trolley runs smoothly along the trolley duct.

〔Effect of the invention〕

As described in detail above, the trolley duct manufactured by the manufacturing method according to the present invention has a seamless and continuous wheel running surface even if the housing has a curved shape. Therefore, the running of the current collector trolley is smooth and stable, and there is no arcing, which results in stable power reception from the conductor to the current collector, and also extends the life of the conductor and the current collector. Furthermore, it is possible to realize quiet running of the current collection trolley without generating noise.

[Brief explanation of the drawing]

Figure 1 [a), (b), fc), fd), fe
d, ff) are step-by-step process explanatory diagrams showing the main steps of an embodiment of the method for manufacturing a trolley duct according to the present invention, and Fig. These are partially cutaway views of the trolley in a running state, where figure fa) is a front view and figure ('b) is a front view.
) is a side view. Figure 3 (a), ('b), (C
1, (d) and Fig. 4 (a), (b), (C1
, (dl is a step-by-step process explanatory diagram showing the main steps of another embodiment of the method for manufacturing a trolley duct according to the present invention, and FIG. 5 (al, (bl, C1 is a conventional trolley duct) Fig. 6 is a partially cutaway plan view showing the current collecting trolley running along the trolley duct. 1.1', 1''...Housing la...Wheel running surface 2...Notch 3...Conductor 5...Trolley duct agent Patent attorney Takehiko Matsumoto Figure 1 (e) (b) ゝ゛-16 Figure 3 Figure 4 ( C)

Claims (4)

[Claims] (1) A housing in which a conductor is housed along the longitudinal direction, and a wheel running surface of a current collecting trolley that runs while receiving power from the conductor is provided along the longitudinal direction, is connected to the housing. In a method for manufacturing a trolley duct that includes a step of bending the electric trolley so that it runs on a curved track, cuts are made in the lateral direction of the housing so that the wheel running surface remains, and then the current collecting trolley is bent. A method for manufacturing a trolley duct, characterized in that the housing is bent so that the trolley duct is suitable for traveling along a curved track. (2) The method for manufacturing a trolley duct according to claim 1, wherein the housing in which the cuts are made is linear in the longitudinal direction, and the housing is bent so that the curved trajectory becomes a horizontal arc. (3) The trolley duct according to claim 1, wherein the housing in which the cuts are made is linear in the longitudinal direction, and the housing is bent so that the curved trajectory has a height difference along the traveling direction. manufacturing method. (4) The trolley according to claim 1, wherein the housing in which the cuts are made has a horizontal arc shape in the longitudinal direction, and the housing is bent so that the curved trajectory has a height difference along the traveling direction. Duct manufacturing method.