JPS635363Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of application] The present invention relates to the provision of a device for collecting current in a multi-wire insulated trolley duct having a structure in which an insulated trolley wire is stretched inside the duct, and is particularly applicable to The present invention relates to the provision of a current collector of this type that can be advantageously installed and used in places with a poor atmosphere.

[Conventional technology]

In general, two types of contact mobile power supply systems have been adopted: a trolley duct system that collects current by running a trolley, and an insulated trolley bar that collects current by bringing the collector into contact with the bias. Each has its own problems.

In other words, in the former trolley bus duct system, the trolley, which is a current collector, is housed in the duct, so it is compact, but on the other hand, many bare conductors are arranged close to each other in parallel in the duct, and Since the duct has continuous openings along the entire length of the duct to pull out the part of the trolley that connects to the external moving equipment, if the atmosphere is humid or dusty, the bad atmosphere will pass through the duct openings. They may enter the interior and cause condensation or a volume of dust between adjacent conductors, easily causing a short circuit. In addition, in the case of the latter insulated trolley bar, a conductor is built into an insulating cover with a roughly U-shaped cross section,
Since the conductor is exposed within the limited opening of the insulating cover, a large electrical insulation distance is ensured even when many conductors are placed close together, and the insulation performance is excellent. A collector is pivotally attached to the tip of a vertically long spring-loaded arm, one end of which is pivoted to a tow rod that is linked to a tow rod, and the collector's current collector is biased toward the conductor exposed within the opening of the insulating cover by the tilting force of the arm. Since the current is collected through contact, the space for moving current collection is quite large, and since the arm is directly linked to the moving equipment, it is not affected by the vibrations and swings of the moving equipment. In addition, because a large number of insulated trolley bars are installed independently, each insulated trolley bar must be installed in conjunction with an arm for each insulated trolley bar that is pivoted to a common traction bar. Due to errors, etc., one or more insulated trolley bars cause the collector to collide with the insulated cover, making it difficult to perform stable current collection.

As described above, the trolley duct and the insulated trolley bar each have advantages and disadvantages, and in addition, they both have common problems.

That is, the trolley duct, insulated trolley bar,
The conductor is usually a standard length of about 3 m, and many of them are sequentially electrically and mechanically joined to form a predetermined line, so there are several joints on the current collecting surface of the conductor. Due to the steps and gaps that tend to occur in these joints, instantaneous disconnection and sparks occur during current collection running. The sparks can cause ignition in a dry but dusty atmosphere, which is dangerous.

In order to solve these problems, the inventors constructed a trolley duct by installing an insulated trolley wire inside the duct, and insulated the current collector mounted on the trolley that runs inside the duct. We devised an insulated trolley duct system in which the conductor exposed within the restricted opening of the attached trolley wire is brought into biased contact. This takes advantage of both the compactness of the trolley duct and the good insulation performance of the insulated trolley bar, and compensates for the shortcomings of the trolley duct and insulated trolley bar, and even though the duct has joints, Since the trolley wire to be stretched can be rolled into a long length by drum winding, it is possible to significantly reduce the number of joints on the current collecting surface of the conductor, which eliminates various conventional problems. It attracted attention as something that could solve all the shortcomings in one fell swoop.

However, long insulated trolley wires are wrapped in drums and delivered to the site.
Although the wire is fed out, stretched, and stretched, it is very difficult to completely eliminate the curling tendency in the rolled-up state, and the wire is often stretched in a duct with snakes formed. Under such conditions, the current collector collects current by using both the trolley car that runs guided by the duct and the current collector that comes into contact with the conductor using the limited opening of the insulated trolley wire as a guide. However, if the insulated trolley wire has a deformed part such as a snake, the guide of the current collector becomes unstable. This tends to be exacerbated when the contact position between the wire and the duct is not constant, and if this happens, the contact between the current collector and the trolley wire will be adversely affected, making it difficult to ensure stable current collection running.

[Purpose of invention]

In view of the above-mentioned problems, the present invention has been developed for an insulated trolley duct in which a large number of insulated trolley wires are stretched in parallel in a common duct, and the current is collected by running within the duct. This type of current collector is capable of absorbing deviations caused by deformation of the insulated trolley wire and the duct, even if the contact position between the trolley wire and the duct is not constant, and allows stable current collection running at all times. This is what we are trying to provide.

[Summary of the idea]

That is, the current collector of the present invention is a multi-wire insulated trolley in which a large number of insulated trolley wires 10, 10, 10, etc. are stretched in parallel in a common duct 1, as shown in the attached drawings. A device that collects current from a duct includes a wheeled trolley 22 that is towed by a mobile device and runs within the duct 1, and a current collector mounted on the trolley 22, and the current collector is the insulating coated trolley wire 10
The current collector unit 27 is composed of a current collector 25 that is brought into contact with the conductor exposed within the restricted opening of the trolley wire, and an insulating holder 24 that supports the current collector 25, and that corresponds to each of the insulated covered trolley wires 10. Each of the current collecting units 27 passes through a support member 29 that is tiltably raised on the trolley car 22, and is mounted on a pedestal 26 that is movable vertically and horizontally. An elastic body 28 that is separately attached and interposed between the pedestal 26 and the trolley car 22
It is characterized by being elastically supported by.

〔Example〕

The present invention will be explained in more detail below with reference to the accompanying drawings.

As shown in FIGS. 1, 2, and 4, the duct 1 includes a plurality of duct units 2, 2,
2... are successively joined to form a long length, and the duct units 2, 2 are mechanically integrated by connecting ducts 3, 3, 3.... Each duct unit 2 is suspended from brackets 4, 4, 4, . . . placed on construction materials.

The duct unit 2 is a regular length body of several meters in length and has a U-shaped cross section, which are opposed to each other with their openings facing each other, and a mating portion 2a is formed on one side, and the frame bodies are connected to a substrate with bolts and nuts 5. On the other side, an opening 6 that is continuous in the longitudinal direction is set.

To attach the duct unit to bracket 4,
This is done using the hanging bolt 7.

Such duct units 2, 2, 2... are arranged in series with their respective openings facing in the same direction, that is, downward, and are connected to U-shaped connecting ducts 3, 3.
are integrated by connecting them with bolts and nuts 8.

On the other hand, as shown in FIG. 3, the insulated trolley wire 10 stretched in such a duct is made by fitting the same tape 12 in a curved manner around the periphery of the steel stranded wire 11, for example, so that the cross section is approximately I. It consists of a long molded conductor 13 formed in a character shape, and an insulating cover 14 having a substantially U-shaped cross section and continuously covering the conductor 13 in the longitudinal direction. A conductor exposed portion 15 is formed in the opening 14a.

The insulating coated trolley wire 10 thus formed into a long length is wound around a drum 16 or in a spiral shape using the side surfaces on both sides of the opening 14a of the insulating cover 14 as winding surfaces, and is prepared for installation as a single long wire.

Such a long insulated trolley wire 10
is prepared with a length approximately equal to the length of the duct 1 made long by connecting the duct units, and is fed out to penetrate through each duct unit 2, 2, 2... and pass through each duct connection part. Then, as shown in FIG. 6, the end of the insulated trolley wire 10 is held in place by an anchor clamp 17 at a duct unit at the end of the line, and the trolley wire 10 is stretched.

The insulated trolley wires 10 stretched in this way are stretched in parallel in a common duct 1 with a large number of restricted openings 14a facing in the same direction, that is, toward the opening side of the duct. An insulating cover 14 is fitted into a grooved insulating holder 30 arranged inside each duct unit 2 to perform intermediate suspension, thereby suppressing slack.

The anchor clamp 17 is composed of a rigid pin 18 that penetrates the conductor 13 of the insulated trolley wire 10 and the insulating cover 14, and an insulator 19 that supports both ends of the rigid pin 18 and is bolted into two parts. By fixing the insulator 19 to the duct with bolts or the like, the insulated trolley wire is held in place. This anchor clamp is not necessarily necessary; for example, if the conductor 13 has a steel stranded wire 11, a tightening insulator may be connected to the end of the steel stranded wire 11 to hold it in the duct.

Now, for the insulated trolley duct configured as described above, the current collector 20 that runs to collect current is as follows.
Trolley truck 22 with running wheels 21 on four sides
and a current collector mounted on the trolley 22, and the current collector includes a brush-like current collector 25.
and an insulating holder 24 carrying the current collector 25, and the number of current collecting units 27 corresponding to the number of insulated trolley wires is provided. An elastic body 23 such as a coil spring that is biased and protrudes outward.
is built-in.

These current collecting units 27, 27, 27...
They are each individually fixed on a pedestal 26 that is attached to a pedestal 30 installed on the trolley 21 with a support member 29 and an elastic body 28 such as a coil spring interposed therebetween. The support member 29 is made of a bolt/nut or the like, and penetrates through the trolley car side pedestal 30 and the current collecting unit side pedestal 26.
The through hole 30a of No. 30 is made slightly larger than the shaft diameter of the bolt, thereby allowing the support member 29 made of the bolt to move in the penetrating direction of the pedestal, that is, to move in the vertical direction and move (tilt) in the horizontal direction. It is something. Therefore, each current collecting unit 27 can move vertically and horizontally based on the horizontal movement of the pedestal 26 as the supporting member 29 tilts and the vertical movement of the pedestal 26 with respect to the supporting member.
In such a state, it is elastically supported by the elastic body 28.

By setting the spring constants of the elastic body 23 inside the insulating holder and the elastic body 28 on the trolley to 23<28, the current collector unit can sit more easily. In addition to wheels 21 running on the bottom surface of the duct, guide wheels 31 running on the side surfaces of the duct are provided on four sides of the trolley bogie 22 to ensure running stability of the trolley bogie 22. Furthermore, a terminal box 32 is provided below the trolley 22 and is vertically installed through the opening 6 of the duct 1. This box 3
2 is equipped with a towing chain 32, which is connected to a towing frame 34 attached to the moving device side, and a lead wire 35 connected to the collector 25 inside.
A terminal board 36 for taking in the information is built-in. A lead wire 37 is led out from the terminal board 36 to be connected to a moving device (not shown).

In FIG. 6, reference numeral 50 denotes a transfer point that is set so that the end portions of the duct unit, which are expanded into a trumpet shape, are separated from each other and are opposed to each other. 51 is attached to the end of the insulated trolley wire in the end of the duct unit which is expanded in the shape of a prong, and has a conductor exposed portion 1.
This is an insulating guide with a guide surface that corresponds to No. 5.

Furthermore, the support members 29 to which the current collecting units 27 are individually associated may be directly attached to the frame of the trolley car 22 without using the pedestal 30.

[Effect]

In the current collector configured in this way, a large number of current collectors 25, 25, 25, . . . , a large number of insulated trolley wires 10, 10, 10, . Each line is forced into contact with the exposed portion 15 of the conductor 13 through the individually restricted opening 14a, and in this state the trolley car is pulled by a moving device, thereby collecting current from multiple lines at once. It is something.

If the insulated trolley wire has a tendency to curl and the restricted opening 14a is deviated from the normal direction, the tilting of the support member 29 and the pedestal 26
By vertically moving the current collector unit 27, it is possible to follow the current collector unit 27 in the deviated direction, thereby making it possible to stably contact the current collector 25 with the conductor 13. In addition, the trolley wire with insulation coating 10
The same operation as described above can also be used to cope with the case where the positions of the duct 1 and the duct 1 are not aligned.

〔effect〕

As explained above, the current collecting device of the present invention runs on wheels inside an insulated trolley duct in which a large number of insulated trolley wires are strung inside a common duct, so it is less affected by vibrations in the moving equipment, and even if the insulated trolley wire has a tendency to bend or its connection position with the duct is not correct, it can follow this and stabilize the contact with the conductor through the limited opening of the current collector, which is extremely beneficial in reducing the moving space and achieving stable current collection.

[Brief explanation of the drawing]

FIG. 1 is an explanatory diagram showing an outline of an insulated trolley duct for running a current collecting device according to the present invention;
Fig. 2 is a perspective view showing the duct unit, Fig. 3 is a perspective view showing the insulated trolley wire, Fig. 4 is a side view showing the connecting part of the duct unit, Fig. 5
The figure is a cross-sectional view taken along the line A-A in Fig. 5, and Fig. 6 shows the vicinity of the transfer point of the insulated trolley duct. A is a plan view, B is a partially sectional side view, and Fig.
The figures show a current collector according to the present invention, in which A is a plan view, B is a partially sectional side view, and C is a side view in the cross-sectional direction. 1... Duct, 10... Trolley wire with insulation coating, 10... Current collector, 22... Trolley truck,
24...Insulating holder, 25...Collector, 27...
Current collector unit, 28... elastic body, 29... support member.

Claims (1)

[Scope of utility model registration request] A wheeled trolley that is towed by a mobile device and runs within the duct in a multi-wire insulated trolley duct in which a large number of insulated trolley wires are stretched in parallel in a common duct, and which collects current. a trolley; and a current collector mounted on the trolley, the current collector including a current collector that contacts the conductor exposed within the restricted opening of the insulated trolley wire; and an insulating holder supporting the trolley wire, and each of the current collecting units is a support tiltably raised on the trolley car. Each trolley is mounted separately on a pedestal that penetrates the member and is movable vertically and horizontally, and is elastically supported by an elastic body interposed between the pedestal and the trolley. A current collector for a multi-wire insulated trolley duct.