JPH0769105A - Trolly duct - Google Patents

Abstract

PURPOSE:To provide such a trolly duct that can easily adjust its whole length without stopping electric power supply to a moving load. CONSTITUTION:A trolly duct which has an approximately quadratic-prism-shape, stores a conductor 2, and has trolley openings 3 axially stretching on its one side is provided with duct main body 1 having engagement counterparts 4 of prescribed length on both side of trolly openings 3, conductor supports 6 for supporting the conductor 2 in the duct main bodies 1, hoisting metals 7 for suspending the duct main bodies 1, connection metals 12 having engagement parts 14 for being engaged with the engagement counterparts 4 of the connected two duct main bodies 1, and a power supply member 19 for supplying power to the conductor 2 by penetrating the wall faces of the duct main bodies 1. Therefore, the engagement parts 14 and the engagement counterparts 4 are so formed that the duct main bodies 1 can displace axially by prescribed amount.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a trolley duct which is used, for example, in an electric product inspection line of a factory to supply electricity to a mobile load.

[0002]

2. Description of the Related Art FIG. 12 shows a conventional trolley duct.
There is one shown in. This product includes a duct main body 1, a conductor support 6, a hanging fitting 7, a connecting fitting 12, and a power feeding member 19
Is equipped with.

The duct body 1 has a substantially rectangular tube shape and accommodates a rod-shaped conductor 2. This duct body 1
The trolley has an opening 3 extending in the axial direction on one side, and the engaged portions 4 having a predetermined length are provided on both sides of the trolley opening 3. Further, on both sides of the engaged portion 4, there are provided positioning portions 5 for limiting the engagement position of the connecting fitting 12 described later. The conductor support 6 has an insulating property and is fixed to the inner wall of the duct body 1 at a predetermined interval to support the conductor 2.

The hanging metal fitting 7 is composed of a pair of facing pieces 8 and 8 and a connecting piece.
It is a roughly U-shaped one consisting of 9 and suspends the duct body 1. In this suspending metal 7, the tip of the facing piece 8 is bent inward so as to hold the duct body 1.
Further, a male screw member 10 penetrates the connecting piece 9. By screwing the nut 11 onto the male screw member 10 and tightening the nut 11, the duct main body 1 is fixed, and the hanging metal fitting 7 is attached to the bracket extending from the separately installed equipment carrying rail.
Is installed.

The connecting fitting 12 is an engaged portion 4 of the duct body 1.
Two duct bodies, each of which has a pair of side plates 13 and 13 having an engaging portion 14 of a predetermined length engaged with the duct body 1 sandwiching the duct body 1 from both sides, and a fixing plate 16 fixing the side plates 13 and 13. It connects 1,1 closely. At that time, the conductor 2 is connected to the duct body 1
Separately, they are electrically connected by a conductive conductor joint (not shown).

The power supply member 19 is a box-shaped member having a terminal (not shown), and is normally arranged at the connecting portion of the two connected duct bodies 1 and 1, and the wall surface of the duct body 1 is Penetrate to feed conductor 2. Further, the power feeding member 19 is usually provided for each energizing section formed by electrically connecting a plurality of conductors 2.

[0007]

By the way, the trolley duct is arranged along, for example, an electric product inspection line in a factory and supplies electricity to an electric device which is automatically conveyed. If it is carried out by a chain conveyor, the chain may stretch and sag due to long-term use. In such a case, it may hinder the transportation of the equipment, so the chain is re-stretched by extending the entire length of the equipment transportation rail. It is necessary to extend the length according to the elongation of the chain. However, the above-mentioned cannot separate a plurality of connected duct main bodies from each other to extend the entire length, and duct bodies of different lengths must be prepared in advance and replaced appropriately. There was a problem of not becoming.

Further, a duct main body 23 for length adjustment as shown in FIG. 13, that is, one having an expansion / contraction part 24 so that the axial length can be changed is inserted in the middle of a plurality of duct main bodies to be connected. If it is set, it is possible to adjust the total length. However, since it is difficult to expand and contract the conductor, the duct body 23 does not accommodate the conductor. Therefore, when the trolley passes through the duct main body 23, electricity is not supplied to the electric device, and in the case of a device equipped with a microcomputer or the like, there is a problem that an unplanned reset is performed and a problem occurs.

The present invention has been made in view of the above circumstances, and an object thereof is to make it possible to easily adjust the overall length of the trolley duct without interrupting the supply of electricity to the mobile load. To provide.

[0010]

In order to achieve the above object, a trolley duct according to a first aspect of the present invention has a generally rectangular tubular shape for accommodating a conductor and having a trolley opening formed on one side thereof and extending in the axial direction. A duct main body having engaged parts of a predetermined length on both sides of the trolley opening, a conductor support tool for supporting the conductor in the duct main body, and a hanging metal fitting for suspending the duct main body. In a trolley duct including: a connection fitting having an engaging portion that engages with the engaged portions of the two duct bodies, and a power feeding member that penetrates a wall surface of the duct body to feed power to a conductor, The duct main body is formed with the engaging portion and the engaged portion so that the duct main body can be displaced by a certain amount in the axial direction.

The trolley duct according to claim 2 is
The power supply member according to claim 1 is arranged for each duct body.

The trolley duct according to claim 3 is
The conductor support according to claim 1 or 2 is arranged so as to be positioned at both ends of the conductor.

The trolley duct according to claim 4 is
The hanging fitting according to any one of claims 1 to 3 is formed so as to be movable in the axial direction of the duct body.

[0014]

According to the first aspect of the present invention, since the duct body is formed with the engaging portion and the engaged portion so that the duct body can be displaced by a certain amount in the axial direction, a plurality of duct bodies are connected. The entire length of time can be easily adjusted.

According to the structure described in claim 2, in addition to the function described in claim 1, since the power feeding member is arranged for each duct body, even if a plurality of connected duct bodies are separated from each other,
The energized state of each conductor is maintained.

According to the structure of claim 3, in addition to the effect of claim 1 or 2, the conductor support is arranged so as to be located at both ends of the conductor, so that when two duct bodies are connected. A step is less likely to occur between the end of one conductor and the end of the other conductor that are adjacent to each other in the axial direction.

According to the structure described in claim 4, in addition to the functions described in claims 1 to 3, since the suspension fitting is formed so as to be movable in the axial direction of the duct body, the duct body can be easily displaced in the axial direction. Can be made.

[0018]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described below with reference to FIGS. The members having the same basic functions as those of the conventional example are designated by the same reference numerals. This trolley duct consists of duct body 1, conductor support 6
And a connection fitting 12 and a power supply member 19.

The duct body 1 has a substantially rectangular tube shape and accommodates a rod-shaped conductor 2. The duct body 1 has an opening 3 for a trolley extending in the axial direction on one side, and an engaged portion 4 having a predetermined length on both sides of the opening 3 for a trolley. Specifically, as shown in FIG. 4, the engaged portion 4 is formed by bending the edge portions on both sides of the trolley opening portion 3 outward and has a generally J-shaped cross section. Further, on both sides of the engaged portion 4 in the axial direction, there are provided positioning portions 5 for limiting the engaging position of the connecting fitting 12, which will be described later. The positioning portion 5 is formed by bending both sides of the engaged portion 4 in the axial direction extremely outwardly of the engaged portion 4. Furthermore, a power supply opening is provided on the wall surface of the intermediate portion of the duct body 1.

The conductor support 6 is made of, for example, an insulating material made of synthetic resin, and is fixed to at least inner walls of both ends of the duct body 1 to support the conductor 2. By arranging the conductor support 6 in this way, the two duct bodies 1, 1
Conductors that are adjacent to each other in the axial direction when connected
There is no step between the end of 2 and the end of the other conductor 2, so that the current collector provided in the trolley passing through the connecting portion and the conductors 2, 2 can be brought into contact with each other smoothly.

The hanging metal fitting 7 includes a pair of facing pieces 8 and 8 and a connecting piece.
It is a roughly U-shaped one consisting of 9 and suspends the duct body 1. In this suspending metal 7, the tip of the facing piece 8 is bent inward so as to hold the duct body 1. Further, the male screw member 10 penetrates the connecting piece 9. By screwing the nut 11 into the male screw member 10 and tightening it,
The duct main body 1 is fixed, and the hanging metal fitting 7 is attached to a bracket extending from a separately installed rail for transporting equipment.

The connection fitting 12 is composed of a pair of side plates 13, 13 and a fixed plate 16, and connects the two duct bodies 1, 1. As shown in FIG. 6, the side plate 13 has a generally U-shaped cross section, and sandwiches the duct body 1 from both sides in the width direction. One end of the side plate 13 engages with the engaged portion 4 of the duct body 1. A joint 14 is provided. The engaging portion 14 is formed by bending one end of the side plate 13 so as to have a generally J-shaped cross section and being bent more significantly than the engaged portion 4.

The engaging portion 14 has a length slightly shorter than the engaged portion 4 of the duct body 1. That is, this engaging part
A gap is formed between 14 and the positioning portion 5 of the duct body 1 because the engagement portion 14 is short. Therefore, when the two duct bodies 1 and 1 are connected by the connecting fitting 12, the duct body 1 can be displaced in the axial direction by the gap, as shown in FIG. Further, a fixing plate described later is provided near the other end of the side plate 13.
A fitting recess 15 for fitting with 16 is provided.

The fixed plate 16 has a substantially flat plate shape, and sandwiching pieces 17, 17 are continuously provided at both ends in the width direction thereof. Clip 17
The fitting convex portion 18 is provided on the fitting concave portion 15 of the side plate 13.
The side plate 13 is fixed by fitting with.

The feeding member 19 is a box-shaped member for accommodating a tongue-shaped terminal (not shown), has an opening on one surface, and projects the terminal from there. This power supply member 19
Is provided for each duct body 1 so as to cover the power supply opening, and is screwed to a mounting plate 20 having a shape similar to that of the side plate 13 of the connection fitting 12. That is, the terminal protruding from the power feeding member 19 penetrates through the power feeding opening and the conductor 2
The conductor 2 is supplied with power by making contact with.

The adjustment of the entire length when a plurality of duct bodies 1 of the trolley duct are connected will be described. First, the plurality of duct bodies 1 are usually closely connected by the connecting fittings 12. Next, if it becomes necessary to extend the entire length from the slack of the chain conveyor,
After loosening the nut 11 of 7, the duct body 1 is displaced so as to be separated from each other in the axial direction. Then, the nut of the hanging metal fitting is tightened again to fix the duct body. At this time, by changing the number of duct bodies 1 to be displaced, the entire length can be made as required.

It is needless to say that the displacement amount of the duct main body must be set so that the trolley does not drop out from the gap when the duct bodies are separated from each other and the contact between the trolley and the conductor is maintained. is there. Further, the trolley duct of the present invention can be used by connecting with a conventional trolley duct. Further, the connecting fitting is not limited to the one including the side plate and the fixing plate, and for example, the duct body may be connected and fixed only by the side plate. Further, the hanging metal fitting may be, for example, one formed by bending an iron plate in a U-shape, or may be formed by connecting iron plates bent in an L-shape.

Next, a second embodiment of the present invention will be described with reference to FIGS.
It will be described based on 1. The members having the same basic functions as those of the first embodiment are designated by the same reference numerals and the description thereof will be omitted.

Explaining different parts, the male thread member 10 of the hanging metal fitting 7 of this trolley duct is
Wheel so that 7 can move in the axial direction of duct body 1.
21 are connected to each other, and the rails 22 for running the wheels 21
However, for example, they are arranged so as to be suspended from the ceiling.
With this configuration, the hanging metal fitting 7 can be easily
Move in the 1 axis direction.

The adjustment of the entire length when a plurality of duct bodies 1 of this trolley duct are connected will be described. First, the plurality of duct bodies 1 are usually closely connected by the connecting fittings 12. Then, when it becomes necessary to extend the entire length from the slack of the chain conveyor, the duct body 1 is displaced so as to be separated from each other in the axial direction. The displacement of the duct body 1 is performed by moving the suspension metal fitting 7 that suspends the duct body 1. At this time, by changing the number of duct bodies 1 to be displaced, the entire length can be made as required.

[0031]

In the trolley duct according to the first aspect of the present invention, since the engaging portion and the engaged portion are formed so that the duct main body can be displaced by a certain amount in the axial direction, a plurality of duct main bodies are connected. You can easily adjust the overall length when you do.

According to the trolley duct of the second aspect, in addition to the effect of the first aspect, the conductive state of each conductor is maintained even if a plurality of connected duct bodies are separated from each other.
The supply of electricity to the mobile load is uninterrupted.

In addition to the effect of claim 1 or 2, the trolley duct according to claim 3 has an end portion of one conductor and an end portion of the other conductor which are adjacent to each other in the axial direction when two duct bodies are connected. Since a step is unlikely to occur between them, the current collector provided in the trolley passing through the connection portion and the conductor can be brought into contact with each other smoothly.

According to the trolley duct of the fourth aspect, in addition to the effects of the first to third aspects, since the hanging metal fitting is formed so as to be movable in the axial direction of the duct body, the duct body can be easily displaced in the axial direction. be able to.

[Brief description of drawings]

FIG. 1 is a partially cutaway side view showing a first embodiment of the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a partially cutaway side view showing a state in which the duct body is displaced.

FIG. 4 is a sectional view of the duct body.

FIG. 5 is a front view of a side plate of the connection fitting.

FIG. 6 is a sectional view of a side plate of the connection fitting.

FIG. 7 is a cross-sectional view showing a state in which the duct body is connected by a connecting fitting.

FIG. 8 is a front view of the hanging metal fitting.

FIG. 9 is a side view of the hanging fitting.

FIG. 10 is a cross-sectional view showing a state in which the suspension fitting suspends the duct body.

FIG. 11 is a side view showing a state in which the suspension fitting suspends the duct body.

FIG. 12 is a side view showing a conventional example.

FIG. 13 is a side view showing a conventional example.

[Explanation of symbols]

 1 Duct body 2 Conductor 3 Trolley opening 4 Engaged part 6 Conductor support 7 Hanging fitting 12 Connection fitting 14 Engagement part 19 Power supply member 21 Wheel 22 Running rail

Claims (4)

[Claims] 1. A substantially rectangular tube-shaped member for accommodating a conductor and having an opening for trolley extending in the axial direction on one side, and having engaged portions of a predetermined length on both sides of the opening for trolley. A duct body, a conductor support for supporting the conductor in the duct body, and a hanging metal fitting for suspending the duct body,
A trolley duct including: a connecting fitting having an engaging portion that engages with an engaged portion of two duct bodies to be connected; and a power feeding member that penetrates a wall surface of the duct body to feed power to a conductor. The trolley duct, wherein the engaging portion and the engaged portion are formed so that the duct body can be displaced by a certain amount in the axial direction. 2. The trolley duct according to claim 1, wherein the power feeding member is provided for each duct body. 3. The trolley duct according to claim 1, wherein the conductor support is arranged so as to be located at both ends of the conductor. 4. The trolley duct according to claim 1, wherein the hanging metal fitting is formed so as to be movable in the axial direction of the duct body.