WO2014207977A1

WO2014207977A1 - Ceiling-traveling vehicle system, and wiring method for ceiling-traveling vehicle system

Info

Publication number: WO2014207977A1
Application number: PCT/JP2014/002297
Authority: WO
Inventors: 博之貝沼; 徳菊池
Original assignee: 村田機械株式会社
Priority date: 2013-06-26
Filing date: 2014-04-24
Publication date: 2014-12-31
Also published as: TW201509709A

Abstract

　This ceiling-traveling vehicle system is provided with a ceiling-traveling vehicle (101) provided with a drive wheel (111) and a carriage (112), a first horizontal part (121) for supporting the drive wheel (111), a rail (102) having a vertical part (123) for holding the first horizontal part (121) in a hanging manner, an electric wire (103) placed on a side of the vertical part (123) that is opposite a passage route (A) of the drive wheel (111), and a power-receiving device (113) for receiving electric power from the electric wire (103) without contact, the power-receiving device being provided to the ceiling-traveling vehicle (101). The electric wire (103) is provided with power supply units (131) which are portions for supplying electric power, turnback parts (132) that are turned back from the power supply units (131) toward the vertical part (123) and placed along the power supply units (131), and curved parts (133) that are curved upward from the turnback parts (132).

Description

Overhead traveling vehicle system and wiring method in overhead traveling vehicle system

The present invention relates to a system including a suspended overhead traveling vehicle that travels along a rail that is suspended from a ceiling or the like, and more particularly, a ceiling that is fed in a non-contact manner from an electric wire disposed along the rail. The present invention relates to an overhead traveling vehicle system including a traveling vehicle and a wiring method in the overhead traveling vehicle system.

In factories, etc., overhead traveling vehicles that run while hanging on rails that are suspended from the ceiling, etc., and transport goods between manufacturing equipment and storage on the factory floor are used. The provided overhead traveling vehicle system may be used. By using such an overhead traveling vehicle system, it is possible to effectively use the space in the factory.

Conventionally, as a method of supplying electric power to the overhead traveling vehicle, for example, a trolley wire is provided along a rail, and a collector that is in sliding contact with the trolley wire is installed in the overhead traveling vehicle. There is a method of supplying power to the overhead traveling vehicle.

In recent years, in order to avoid dust generation due to friction between the trolley wire and the current collector, a pair of reciprocating electric wires are arranged along the rails, and an alternating current is passed through the electric wires, so that the overhead traveling vehicle is electromagnetically induced. On the other hand, an overhead traveling vehicle system that employs a so-called non-contact power feeding method that supplies power in a non-contact manner has appeared.

In such a non-contact power supply method, it is necessary to reciprocate the electric wire along the rail with a so-called single stroke, but the supply route for supplying the electric power formed by the electric wire is interrupted in the middle of the traveling route of the overhead traveling vehicle, In some cases, it is necessary to draw a passage route through which a current mainly formed by electric wires flows from the rail, and return the current passage route to the rail again to form a new power supply route. For example, when the wiring becomes long, there is a case where a current passing path is drawn out in order to interpose a series resonant capacitor for stably supplying power to the electric wire. In addition, by providing a switching machine for dynamically changing the traveling route of the overhead traveling vehicle in the middle of the rail, the current passage route may be temporarily pulled out of the rail at the switching portion.

For example, in Patent Document 1, a power supply path is temporarily interrupted by cutting an electric wire, and a terminal that extends to the outside of the rail is attached to an end portion of the cut electric wire so that a current passage path is extended from the rail to the outside. Pull out. Similarly, another electric wire is arranged in a state of being in contact with the cut electric wire, and a terminal extending from the outside of the rail to the inside is attached to the base end portion of the other electric wire, so that a new power supply path is provided along the rail. And a device capable of maintaining a single stroke as a current passage.

This makes it possible to bring the tip of the electric wire, which is the interrupted power supply path, as close as possible to the base end of another electric wire, which is another power supply path, and the section where the power supply path is interrupted and power cannot be supplied Is considered to be as narrow as possible.

Japanese Patent Laid-Open No. 11-4502

However, in the non-contact power feeding method, the Litz wire having good high-frequency characteristics is often used for the electric wire, and the technique described in Patent Document 1 cuts the litz wire in which a plurality of coated thin wires are bundled. The work of removing the coating and connecting the end of the cut litz wire and the terminal needs to be performed in or near the rail. Particularly in the case of rails provided on the ceiling, these operations must be performed at high places, increasing the difficulty.

In addition, it is necessary to have one pair of terminal for the front end and terminal for the base end for each part where the current passage route needs to be pulled out of the rail, which increases the number of parts and makes it difficult to install the overhead traveling vehicle system. Become.

The invention of the present application has been made in view of the above-described problems, and can provide a power supply path outside the rail without using a terminal, and can narrow a section where the power supply path is interrupted and power cannot be supplied as much as possible. It aims at providing the wiring method in a traveling vehicle system and an overhead traveling vehicle system.

In order to achieve the above object, an overhead traveling vehicle system according to the present invention includes an overhead traveling vehicle including a driving wheel, a carriage attached to the driving wheel in a suspended manner, and a plate-like vehicle that supports the driving wheel. A rail having a first horizontal portion and a vertical portion that holds the first horizontal portion in a suspended shape; and a path that forms a path of the overhead traveling vehicle; And a power receiving device that is provided in the overhead traveling vehicle and receives power from the wire in a non-contact manner, and the wire supplies power to the power receiving device. A power supply section that is a portion, a folding section that is folded back from the power feeding section toward the vertical section and disposed along the power feeding section, and a folding section that is folded upward from the folding section. Featuring There.

According to this, the power supply path is interrupted by folding the electric wire, and the current passing path is drawn by further folding the folded electric wire and pulling it out of the rail. Therefore, there is no need to cut the wires to draw the power passage path out of the rails, or to connect the terminals and wires, and work easily even at high places near the ceiling. Is possible.

Also, since the power supply path is interrupted by folding the electric wire, it is possible to arrange the supply paths that are pulled back into the rail with the same structure at as narrow intervals as possible. Therefore, it is possible to make the portion where the supply of power is interrupted as narrow as possible.

The rail further has a plate-like second horizontal portion that extends from the passage of the drive wheel to a portion where the power feeding portion is disposed at the upper end of the vertical portion, and the second horizontal portion is The overhead traveling vehicle further includes two contact surface portions, each having a penetrating passage hole that allows the bent portion to pass through, and contact surface portions that continuously extend along the passage route at both end surfaces in the width direction. Each has an auxiliary wheel that abuts and rotates while sandwiching the second horizontal portion.

According to this, even though the current passage route is drawn out of the rail, the auxiliary wheel of the overhead traveling vehicle can be continuously secured without being interrupted by the contact surface portion that contacts the rail. It becomes possible to drive the traveling vehicle stably.

Further, the passage hole may be one through which a pair of electric wires pass.

According to this, it is possible to cancel the influence of the alternating current passing through the rail on the rail while suppressing the decrease in the structural strength of the rail.

Furthermore, you may provide the electric wire holder attached to the said rail and hold | maintaining the said electric power feeding part and the said folding | turning part of the said electric wire simultaneously.

According to this, it is possible to easily wire the power feeding portion and the folded portion even in a narrow space in the rail.

In order to achieve the above object, a wiring method in an overhead traveling vehicle system according to the present invention includes a driving wheel, an overhead traveling vehicle including a carriage attached to the driving wheel in a suspended manner, and the driving wheel. A plate-shaped first horizontal portion for supporting; a vertical portion for holding the first horizontal portion in a suspended shape; a rail that forms a path of the overhead traveling vehicle; and the drive wheel with respect to the vertical portion. A wiring method in an overhead traveling vehicle system comprising: an electric wire disposed along the passage route on the opposite side of the passage route; and a power receiving device that is provided in the overhead traveling vehicle and receives electric power from the electric wire in a contactless manner. The electric wire is folded back from the power feeding unit, which is a part that supplies power to the power receiving device, toward the vertical part, and a folding unit is disposed along the power feeding unit, and upward from the folding unit. Occasionally And forming a bend by bending unit.

According to this, the power supply path is interrupted by folding the electric wire, and the current passing path can be drawn by further folding the folded electric wire and pulling it out of the rail. Therefore, it is not necessary to cut the wires for drawing the power passage path out of the rails, or to connect the terminals and wires, and work easily even at high places near the ceiling. Is possible.

According to the present invention, it is possible to draw out a current passage path out of the rail with a simple operation without using a separate part such as a terminal. Further, the gap in the power supply path can be reduced as much as possible.

FIG. 1 is a diagram schematically illustrating the overall configuration of an overhead traveling vehicle system. FIG. 2 is a perspective view schematically showing an overhead traveling vehicle attached to a rail. FIG. 3 is a side view schematically showing the overhead traveling vehicle attached to the rail by cutting the rail and the like. FIG. 4 is a perspective view showing a rail and an electric wire. FIG. 5 is a perspective view showing the vicinity of the folded portion of the electric wire. FIG. 6 is a side view showing the vicinity of the electric wire holder 106 by cutting a rail or the like.

Next, an embodiment of an overhead traveling vehicle system and a wiring method in the overhead traveling vehicle system according to the present invention will be described with reference to the drawings. In addition, the following embodiment is only what showed an example of the overhead traveling vehicle system which concerns on this invention, and the wiring method in an overhead traveling vehicle system. Accordingly, the scope of the present invention is defined by the wording of the claims with reference to the following embodiments, and is not limited to the following embodiments. Therefore, among the constituent elements in the following embodiments, constituent elements that are not described in the independent claims indicating the highest concept of the present invention are not necessarily required to achieve the object of the present invention. It will be described as constituting a preferred form.

FIG. 1 is a diagram schematically showing the overall configuration of an overhead traveling vehicle system.

As shown in the figure, the overhead traveling vehicle system 100 is a system that is provided near the ceiling of a factory or the like, can hold the article so that it can be raised and lowered, and can transfer the article from a predetermined point to another point. An overhead traveling vehicle 101, a rail 102, and an electric wire 103 are provided. In the case of the present embodiment, the overhead traveling vehicle system 100 includes a power feeding device 104, a resonator 151, a lift rail 152, a switching machine 153, and an electric wire holder 106.

FIG. 2 is a perspective view schematically showing an overhead traveling vehicle attached to a rail.

FIG. 3 is a side view schematically showing the overhead traveling vehicle attached to the rail by cutting the rail and the like.

The overhead traveling vehicle 101 is a device that travels along the rail 102 while being suspended on the rail 102, and that can lift and lower the article that is held by detachably holding the drive wheel 111, A carriage 112 and a power receiving device 113 are provided. In the present embodiment, the overhead traveling vehicle 101 includes auxiliary wheels 114.

The driving wheel 111 is a wheel that moves the carriage 112 relative to the rail 102 by contacting the rail 102 and rotating the driving wheel 111 itself. In the case of the present embodiment, a drive source 115 is attached to the drive wheel 111.

The carriage 112 is a basic part of the overhead traveling vehicle 101 that is attached to the driving wheel 111 in a hanging manner. For example, the carriage 112 is attached with a chuck for holding an article, a mechanism for opening and closing the chuck, a motor for raising and lowering the chuck, and the like.

The power receiving device 113 is a device that receives electric power from the electric wire 103 through which an alternating current flows without contact by electromagnetic induction. In the case of the present embodiment, since the drive source 115 and the like operate with a direct current, the power receiving device 113 has a cross section provided with two grooves that accommodate the electric wires 103 (feeding portions (described later)) wired in parallel. An E-shaped power receiving core 116 and a rectifier (not shown) that rectifies an alternating current generated by electromagnetic induction in the power receiving core 116 into a direct current are provided.

The auxiliary wheel 114 is a wheel that is arranged so as to sandwich the rail 102 from the side, and that stabilizes the traveling of the overhead traveling vehicle 101.

FIG. 4 is a perspective view showing rails and electric wires.

As shown in these drawings, the rail 102 is a member that is provided in a suspended state from the ceiling or beam of the factory building and forms a travel route of the overhead traveling vehicle 101, and includes a first horizontal portion 121 and a vertical portion. 123. In the present embodiment, the rail 102 has a second horizontal portion 122.

The first horizontal portion 121 is a plate-like portion that supports the drive wheels 111 of the overhead traveling vehicle 101. The first horizontal portion 121 is a strip-shaped portion that is spread out in the horizontal direction, and the space above the first horizontal portion 121 forms a passage route A through which the drive wheels 111 pass. In the case of the present embodiment, the first horizontal portion 121 is provided integrally with the lower end portion of the vertical portion 123 and is arranged in a state extending to the opposite side of the passage route A with respect to the vertical portion 123.

The vertical portion 123 is a portion that holds the first horizontal portion 121 in a suspended shape (for example, in a state of being separated from the ceiling by a predetermined distance). In the case of the present embodiment, the vertical portion 123 is a strip-shaped portion arranged along the vertical plane. In the case of the present embodiment, the cross-sectional shape of the vertical portion 123 and the first horizontal portion 121 forms an inverted T shape, but the present invention is not limited to this, for example, the vertical portion The cross-sectional shape of 123 and the first horizontal portion 121 may be L-shaped.

The second horizontal portion 122 is a plate-like portion that extends from the passage route A of the drive wheel 111 to the portion where the electric wire 103 is disposed at the upper end portion of the vertical portion 123. The second horizontal portion 122 has a function of ensuring the structural strength of the rail 102, and is along the passage route A of the drive wheel 111 on both end surfaces in the width direction (X-axis direction in the drawing) of the second horizontal portion 122. A contact surface portion 124 extending continuously is provided. The contact surface portion 124 is a portion where the auxiliary wheels 114 of the overhead traveling vehicle 101 are in contact with each other and roll. Further, a penetrating passage hole 125 that allows the electric wire 103 to pass in the vertical direction is provided on the side where the electric wire 103 of the second horizontal portion 122 is wired (the side opposite to the passage route A with respect to the vertical portion 123). Yes. By providing the passage hole 125, it is not necessary to provide a notch that divides the contact surface portion 124 in order to draw the electric wire 103 out of the rail 102, and the contact surface portion 124 can be arranged without a break. It is possible to ensure stable and smooth traveling of the overhead traveling vehicle 101.

In the case of the present embodiment, the cross-sectional shape of the rail 102 is a shape obtained by rotating the H character by 90 degrees (the same shape as the so-called H-shaped steel), and the width direction of the first horizontal portion 121 (X in the figure). Both end surfaces in the axial direction are also portions where the auxiliary wheels 114 of the overhead traveling vehicle 101 come into contact with each other and roll.

FIG. 5 is a perspective view showing the vicinity of the folded portion of the electric wire.

The electric wire 103 is a conductive member disposed mainly along the rail 102 on the opposite side of the passage route A of the driving wheel 111 with respect to the vertical portion 123 of the rail 102. The electric wire 103 functions as a power supply line that supplies electric power to the overhead traveling vehicle 101 and is a member that can flow high-frequency alternating current to supply electric power to the overhead traveling vehicle 101 in a contactless manner. As the electric wire 103, for example, a litz wire is employed. The electric wire 103 is pulled out from the power supply device 104, wired in a single stroke along the rail 102, folded back at a portion electrically farthest from the power supply device 104, and returned to the power supply device 104 along the previously wired portion. They are wired so that they form a ring as a whole.

The power feeding device 104 is a device that allows a current to flow through the electric wire 103. In the present embodiment, the power feeding device 104 is a power source that can cause a high-frequency current to flow through the electric wire 103.

Further, the electric wire 103 includes a power feeding part 131, a folded part 132, and a bent part 133 depending on a difference in wiring state with respect to the rail 102.

The power feeding unit 131 is a part of the electric wire 103 that supplies power to the power receiving device 113 provided in the overhead traveling vehicle 101. The power feeding unit 131 is disposed along the vertical portion 123 of the rail 102 at a position where the electric wire 103 in charge of the outward path and the electric wire 103 in charge of the return path are parallel to each other at a predetermined distance from the vertical portion 123 of the rail 102. This is a portion that is housed in the groove of the power receiving core 116 of the power receiving device 113 and causes electromagnetic induction to the power receiving core 116. The power feeding part 131 is disposed above the first horizontal part 121 and on the side of the vertical part 123, and is disposed in parallel with the first horizontal part 121 at a predetermined distance from the vertical part 123. It is a part of the electric wire 103 arranged in parallel with a predetermined distance.

The folded portion 132 is folded toward the vertical portion 123 from the distal end (or the base end) of the power feeding portion 131 wired at a predetermined distance from the vertical portion 123, and is further pulled back along the power feeding portion 131. It is a part of the electric wire 103 including the return part 134 which is a part. In the case of the present embodiment, the folded portion 132 is folded in a U shape within the waterside surface with a radius of curvature allowed for the electric wire 103, and is at least as long as the radius of curvature along the power feeding portion 131. It has been pulled back by a length of more or less.

The bent portion 133 is a portion where the electric wire 103 is bent upward from an end portion opposite to an end portion connected to the power feeding portion 131 of the folded portion 132. In the case of the present embodiment, the bent portion 133 is bent so that the reciprocating electric wire 103 passes through the passage hole 125 provided in the second horizontal portion 122 of the rail 102.

In addition, the electric power feeding part 131, the folding | returning part 132, and the bending part 133 are the parts of the electric wire 103 formed by bending the one electric wire 103, and these boundaries cannot be shown clearly.

In the case of the present embodiment, the portion of the electric wire 103 shown in FIG. 4 includes two feeding portions 131, a folding portion 132, and a folding portion 133, and each of the feeding portion 131, the folding portion 132, and the folding portion 133. Each is arranged so as to be plane-symmetric. Further, the folded portion 132 is arranged in a butted state. By disposing in such a state, one electric wire 103 (a continuous electric wire 103) is bent and formed without using other members, but the electric wire 103 is provided. The two power supply portions 131 can be brought as close as possible, and the gap in the portion where the power supply path must be divided can be reduced. Therefore, the non-power-feeding section that is the gap portion can be reduced, and electric power cannot be supplied to the overhead traveling vehicle 101. Therefore, the portion where the overhead traveling vehicle 101 cannot be accelerated can be reduced.

In the case of the present embodiment, the rail 102 is also divided at the butted portion (symmetrical portion) of the folded portion 132. Accordingly, when the other rail 102 is moved with respect to one rail 102, the power feeding portion 131, the folding portion 132, and the folding portion 133 attached to the other rail 102 are also moved, and thus formed by the power feeding portion 131. It is also possible to separate the power supply path.

Thereby, for example, even if the elevating rail 152 that can be raised and lowered in a state where the overhead traveling vehicle 101 is suspended to maintain the overhead traveling vehicle 101 is provided on a part of the rail 102 that forms the normal traveling route, The non-feeding section can be narrowed.

Similarly, the switching machine 153 for switching the traveling route of the overhead traveling vehicle 101 also needs to divide the rail 102 and move some of the rails 102, but the switching machine 153 also includes a power feeding unit 131 and a turn-back unit 132. By providing the bent portion 133, the rail 102 can be switched in a state in which the non-feeding section is narrowed.

Further, in order to connect a resonator 151 (for example, a series resonant capacitor) interposed in the middle of the electric wire 103 in order to stably supply electric power over the entire electric wire 103, the electric wire 103 is pulled out above the rail 102. However, by arranging the plane-symmetric power feeding section 131, the folding section 132, and the folding section 133, the resonator 151 can be connected in series (series connection) with the non-feed section narrowed. In this case, the rail 102 is not necessarily divided.

FIG. 6 is a side view showing the vicinity of the electric wire holder 106 by cutting a rail or the like.

As shown in the figure, the electric wire holder 106 is a member that is attached to the rail 102 and holds the power feeding portion 131 and the folded portion 132 (return portion 134) of the electric wire 103 at the same time. The electric wire holder 106 has a first holding part 161 for holding the power feeding part 131 and the first holding part 161 from the vertical part 123 for wiring the power feeding part 131 in a state of being separated from the vertical part 123 of the rail 102 by a predetermined distance. A projecting portion 162 that is held at a position separated by a predetermined distance and an attaching portion 163 for attaching the projecting portion 162 to the rail 102 are provided. In addition, the electric wire holder 106 includes a folded portion 132 and a second holding portion 164 that holds the return portion 134 that is a part of the folded portion 132 at the end opposite to the first holding portion 161.

In the case of the present embodiment, the electric wire holder 106 is provided with protrusions 162 at both ends of one attachment part 163 in order to wire the power supply part 131 in parallel, and is first held at the tip of the protrusion 162. Part 161 is attached. Further, the second holding portion 164 is a portion in which the mounting portion 163 is cut out, and the folded portion 132 (return portion 134) is pressed by pressing the folded portion 132 (return portion 134) against the vertical portion 123 of the rail 102. keeping.

By adopting the electric wire holder 106 as described above, the wiring structure of the power feeding part 131, the folding part 132, and the folding part 133 can be easily constructed, and the power feeding part 131, the folding part 132, and the folding part are provided on the rail 102. 133 can be easily attached.

In addition, about the part where the folding | returning part 132 (return part 134) is not wired, the electric power feeding part 131 is hold | maintained by the 2nd electric wire holder 169 which is not provided with the 2nd holding | maintenance part 164 with the structure substantially the same as the electric wire holder 106 ( (See FIG. 4).

Note that the present invention is not limited to the above embodiment. For example, another embodiment realized by arbitrarily combining the components described in this specification and excluding some of the components may be used as an embodiment of the present invention. In addition, the present invention includes modifications obtained by making various modifications conceivable by those skilled in the art without departing from the gist of the present invention, that is, the meaning described in the claims. It is.

For example, the folded portion 132 is drawn so as to form a semicircular shape in the drawing, but is not particularly limited to a semicircular shape, and an arbitrary shape can be selected.

It can be used for an overhead traveling vehicle system, particularly an overhead traveling vehicle system installed in an environment where it is necessary to suppress dust generation during traveling of the overhead traveling vehicle.

100 overhead traveling vehicle system 101 overhead traveling vehicle 102 rail 103 electric wire 104 power supply device 106 electric wire holder 111 driving wheel 112 carriage 113 power receiving device 114 auxiliary wheel 115 driving source 116 power receiving core 121 first horizontal portion 122 second horizontal portion 123 vertical portion 124 Contact surface portion 125 Passing hole 131 Power feeding portion 132 Folding portion 133 Bending portion 134 Returning portion 151 Resonator 152 Lifting rail 153 Switching machine 161 First holding portion 162 Protruding portion 163 Mounting portion 164 Second holding portion 169 Second electric wire holder

Claims

An overhead traveling vehicle comprising a drive wheel and a carriage attached in a hanging manner to the drive wheel;
A plate-shaped first horizontal portion that supports the drive wheel, and a vertical portion that holds the first horizontal portion in a suspended shape, and a rail that forms a path of the overhead traveling vehicle;
An electric wire disposed along the passage path on the opposite side of the passage path of the drive wheel with respect to the vertical portion;
A power receiving device that is provided in the overhead traveling vehicle and receives power from the electric wires in a non-contact manner;
The wire is
A power feeding unit that is a part for supplying power to the power receiving device;
A folded portion that is folded from the power feeding portion toward the vertical portion and disposed along the power feeding portion;
An overhead traveling vehicle system comprising: a bent portion bent upward from the folded portion.
The rail further includes
A plate-shaped second horizontal portion extending from the passage of the driving wheel to the portion where the power feeding portion is disposed at the upper end of the vertical portion;
The second horizontal portion is
A through hole passing through the bent portion; and
A contact surface portion continuously extending along the passage path at both end surfaces in the width direction;
The overhead traveling vehicle further includes:
The overhead traveling vehicle system according to claim 1, further comprising an auxiliary wheel that rotates in a state where the second horizontal portion is held in contact with the two contact surface portions.
The overhead traveling vehicle system according to claim 2, wherein a pair of electric wires pass through the passage hole.
further,
The overhead traveling vehicle system according to any one of claims 1 to 3, further comprising an electric wire holder that is attached to the rail and simultaneously holds the feeding portion and the folded portion of the electric wire.
An overhead traveling vehicle including a drive wheel and a carriage attached to the drive wheel in a suspended manner, a plate-like first horizontal portion that supports the drive wheel, and a vertical that holds the first horizontal portion in a suspended shape A rail that forms a route for the overhead traveling vehicle, an electric wire that is disposed along the passage route on the opposite side of the passage route of the drive wheel with respect to the vertical portion, and the overhead traveling vehicle A wiring method in an overhead traveling vehicle system provided with a power receiving device that receives power from the electric wire in a contactless manner,
The electric wire is folded toward the vertical part from a power feeding part which is a part for supplying power to the power receiving device, and a folding part is disposed along the power feeding part,
A wiring method in an overhead traveling vehicle system in which a bent portion is formed by bending upward from the folded portion.