JP3775759B2 - Non-contact power supply traveling cart - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a non-contact power supply type traveling vehicle that can supply power in a non-contact manner from a power supply line, and more particularly, to a non-contact power supply type traveling vehicle that can always stably supply power even when traveling on a traveling path in which a straight portion and a curved portion are connected. .
[0002]
[Prior art]
Conventionally, as a method of supplying power to a traveling cart that travels along a preset traveling route with a load placed thereon, a method of collecting current with a collector provided on the cart with a trolley wire arranged along the traveling route, traveling A system that collects power from a trolley pass duct installed on the road with a shoe on the carriage, a power supply system that moves the power supply cable connected to the carriage together with the carriage by a cable carrier mounted on the carriage, or a cable reel installed on the carriage There is a method of winding a cable on the road. However, each of the above-described methods has drawbacks such as wear of parts, the size of the power feeding device, and the disconnection of the cable.
[0003]
In order to eliminate such drawbacks, the following non-contact power supply type traveling cart has been developed. FIG. 4 is an explanatory side sectional view of the traveling cart, and FIG. 5 is a plan view illustrating a state in which the traveling cart is passing the curved portion of the traveling path.
[0004]
In the figure, reference numeral 50 denotes a travel path laid on the ground 51, a travel rail 52 on which the travel wheels 55 of the travel cart 54 roll is provided on the upper surface, and a holder 31 that holds the guide wire 30 on the side surface. Is fixed to a base 53 provided on the travel path 50.
[0005]
The traveling carriage 54 is provided with a plurality of E-shaped iron cores 32 (one in the illustrated example) on the longitudinal side surface of the vehicle body via the support seats 33 so as to face the guide wire 30. A pickup coil 34 is wound around the part.
[0006]
The induction wire 30 has a proximal end connected to a high-frequency power source (not shown) and a distal end connected to form a loop. An intermediate portion of the induction wire 30 is a reciprocating line in which current flows in opposite directions. It is comprised so that it may be located in both opening part 32A which pinches | interposes 32 center leg parts. And the opening part 32A of the iron core 32 is formed in the magnitude | size which the guide wire 30 and the holder 31 can pass.
[0007]
When a high-frequency current is passed from the high-frequency power source to the induction wire 30, an induction voltage is generated in the pickup coil 34 by an electromagnetic induction effect in which the induction wire 30 is the primary side and the pickup coil 34 is the secondary side. The high frequency voltage generated by this voltage is converted into a predetermined AC voltage and supplied to the load of the traveling carriage 54. Thus, power is supplied in a non-contact manner while the traveling carriage 54 is traveling.
[0008]
[Problems to be solved by the invention]
However, since the pickup coil 34 is attached to the support seat 33 fixed to the traveling carriage 54 as described above, there is no problem when the traveling path is a straight portion, but there are a plurality of cases where the curvature of the curved portion 50A is small. The change in the distance between the pickup coil 34 and the guide wire 30 makes the relationship between the string and the arc remarkable, and the pickup coil 34 and the guide wire 30 interfere with each other, or the relative position between the pickup coil 34 and the guide wire 30 changes. It fluctuates greatly. Therefore, since the generated voltage fluctuates, there is a problem that stable power feeding cannot be obtained. In addition, since the guide wire 30 is limited in its overall length, the guide wire is connected when the traveling rail becomes long, but there is a problem that power supply is interrupted when the traveling carriage changes the joint of the guide wire 30. .
[0009]
SUMMARY OF THE INVENTION An object of the present invention is to provide a non-contact power supply type traveling carriage that can always supply power stably even on a traveling path in which a straight portion and a curved portion are connected.
[0010]
It is another object of the present invention to provide a non-contact power feeding type traveling carriage that prevents the power feeding from being interrupted at the joint of the guide wire and adds the power feeding capacity.
[0011]
It is another object of the present invention to provide a non-contact power supply type traveling carriage to which the influence of the guide wire is reduced by external interference and high frequency radiation.
[0012]
[Means for Solving the Problems]
In order to achieve the above-described object, the non-contact power feeding type traveling carriage of the present invention is a non-contact power feeding that is fed via a pickup coil by an induction wire that is a reciprocating conductor provided in parallel along a pair of traveling rails. A traveling bogie that is pivotably provided on the traveling carriage, traveling wheels that are respectively disposed on both sides of the bogie and roll on a traveling rail, and one front side and one rear side of the bogie respectively. A guide wheel that is disposed and sandwiches one of the traveling rails from both sides thereof, and a pickup coil that is disposed at a lower position of the bogie and wound around an iron core, and the bogie is disposed at a front portion and a rear portion of the traveling carriage. It is arranged.
[0013]
When the guide wires are non-contact power supply type traveling carts that are spaced apart from each other in the vertical direction, the iron core is an E-shaped iron core in which a pickup coil is wound at the center, and the guide wheel side It is preferable that the guide wire is attached to the bogie so that the guide wire enters the opening portion.
[0014]
About the said travel rail, it is preferable to arrange | position so that the travel rail tread of the said travel wheel may come to a position higher than the said guide line .
[0015]
DETAILED DESCRIPTION OF THE INVENTION
DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of a non-contact power feeding traveling vehicle (hereinafter referred to as the present traveling vehicle) according to the present invention will be described below with reference to the drawings. 1 is a side sectional view of the traveling carriage of the present invention, FIG. 2 is a plan view taken along line AA of FIG. 1, and FIG. 3 is a configuration explanatory view of a non-contact power feeding method. The same parts as those in the past use the same reference numerals.
[0016]
The traveling cart 10 of the present invention includes a bogie 20 suspended from the center of the bottom surface of the main body 11, an E-shaped iron core 32, a pickup coil 34, a traveling wheel 24, and a guide wheel 26 respectively attached to the bogie 20. It has.
[0017]
The main body 11 is equipped with a loading platform, a power supply device, a cart control device, a communication device, etc., not shown. An opening 11A through which electric wires to be described later are inserted and a hollow shaft 12 are suspended from the center of the bottom surface of the main body 11 so as to surround the opening 11A.
[0018]
The bogie 20 is a plate-like member having a rectangular shape in plan view, and has an opening 20A at the center thereof. A bearing 21 between the outer peripheral surface of the hollow shaft 12 and the inner peripheral surface of the opening 20A is fitted. Accordingly, the bogie 20 can freely turn with respect to the hollow shaft 12.
[0019]
A bearing cover 22 having an opening 22 </ b> A is provided on the lower surface of the bogie 20, thereby holding the bearing 21 and holding a support seat 23 that extends downward from the bearing cover 22. An E-shaped iron core 32 and a pickup coil 34 wound around the E-shaped iron core 32 are provided at the lower end of the seat 23. As shown in FIG. 1 and FIG. 2, the E-shaped iron core 32 is attached so that the opening thereof is laterally directed toward the guide wheel 26.
[0020]
The traveling wheel 24 is rotatably provided on brackets 25 provided on both sides of the bogie 20 so as to roll on the tread of the traveling rail 14 laid on the traveling path 13 provided on the fixed side (ground side). It is configured. Reference numeral 28 denotes a motor for driving the traveling wheels.
[0021]
The guide wheels 26 are composed of a plurality of sets, each of which is a pair facing each other, and are rotatably provided on a bracket 27 provided in front of the bogie 20 and in the vicinity of the outside of the rear vehicle body. A pair of opposing guide wheels 26 are arranged so as to abut on both side surfaces of the traveling rail 14.
[0022]
The lead wire 35 of the pickup coil 34 is drawn into the main body 11 through the opening 22A and the hollow shaft 12 provided in the bearing cover 22 along the support seat 23, and through the opening 20A and the opening 11A. Electrical connection.
[0023]
Next, a non-contact power supply type electrical component used in the present invention will be described with reference to FIG. On the fixed side, a high frequency inverter 36, a power factor improving capacitor 37, and the induction wire 30 are provided. On the other hand, the traveling carriage 10 is provided with an E-shaped iron core 32 and a pickup coil 34. The voltage generated by the pickup coil 34 is input to a rectifier circuit 38 and travels through a constant voltage output device 39 such as a PWM inverter. It is configured to be supplied to the load 40 of the carriage 10.
[0024]
Next, the operation of the apparatus of the present invention will be described. When a current is passed from the high-frequency inverter 36 to the guide wire 30, an induced magnetic field is generated, a voltage is induced in the pickup coil 34 on the traveling carriage, power is supplied to the traveling carriage 10, and electric power is supplied to the traveling carriage load 40.
[0025]
When the traveling carriage 10 advances from the straight portion 14B of the traveling rail 14 to the curved portion 14A, the bogie 20 is followed by the guide wheels 26 that roll in accordance with the curvature of the traveling rail 14, as shown in FIG. Since it turns, the follow-up of the pickup coil 34 to the curved portion 14A is improved. Therefore, the traveling wheel 26 travels smoothly along the curved portion 14A, and the variation in the distance between the pickup coil 34 and the guide wire 30 is reduced, so that stable power feeding can be obtained.
[0026]
Moreover, the bogies 20 are disposed at the front and rear portions of the traveling carriage 10. Since the limit of the length of the pickup coil 34 attached to the bogie 20 is the same, the feeding capacity can be increased by attaching two pickup coils 34. Then, by attaching the bogie 20 to the front part and the rear part, it is possible to reduce the fluctuation in the distance between the guide wire 30 and the pickup coil 34 in the straight part 14B and the curved part 14A. Further, power can be supplied without interruption even at the joint of the guide wire 30.
[0027]
Furthermore, the traveling rail tread surface 14 </ b> A of the traveling wheel 24 is disposed so as to be higher than the guide wire 30 with respect to the fixed side. Therefore, since all the guide lines are stored inside the travel path, the object passing through the upper surface of the travel path does not interfere. In addition, the influence of high frequency radiation can be reduced.
[0028]
In this embodiment, the traveling cart 10 travels on a traveling rail laid on the ground. However, the present invention is not limited to this, and the traveling rail is stretched on the ceiling, and the traveling cart is configured to be suspended. It may be.
[0029]
【The invention's effect】
As described above, in the case of the non-contact power supply type traveling carriage according to claim 1 of the present invention, the non-contact power supply type that is fed through the pickup coil by the induction wire that is a reciprocating conductor provided in parallel along the pair of traveling rails. In the traveling carriage, a bogie provided on the traveling carriage so as to be able to turn, traveling wheels disposed on both sides of the bogie and rolling on the traveling rail, and disposed on the front and rear of one side of the bogie, respectively. And a guide wheel that sandwiches one of the traveling rails from both sides thereof, and a pickup coil that is disposed at a lower position of the bogie and wound around an iron core, and the bogie is disposed at a front portion and a rear portion of the traveling carriage. ing. Therefore, there is an advantage that stable power feeding can be performed. Moreover, in addition to an increase in power supply capacity, power can be supplied without interruption even at the joint of the guide wire.
[0030]
In the case of the non-contact power supply traveling vehicle according to claim 2 of the present invention, the guide wire is the non-contact power supply traveling vehicle according to claim 1, wherein the guide wires are spaced apart from each other in the vertical direction. It is an E-shaped iron core around which a pickup coil is wound at the center, is attached to the bogie in the direction of the guide wheel side, and each of the guide wires enters the opening. Therefore, the same effect as that of the invention according to claim 1 is obtained.
[0031]
In the case of the contactless power supply traveling vehicle according to claim 3 of the present invention, the contactless power supply traveling vehicle according to claim 1 or 2, wherein the traveling rail has a traveling rail tread surface of the traveling wheel from the guide wire. It is arranged to be at a high position. Therefore, in addition to the effect of the invention according to claim 1 or 2, since the guide wire is provided in the interior from the laying surface of the traveling rail, the influence of interference with the outside and high-frequency radiation can be reduced.
[Brief description of the drawings]
FIG. 1 is a side sectional view of a carriage of the present invention.
FIG. 2 is a plan view taken along line AA in FIG.
FIG. 3 is a diagram illustrating the configuration of a non-contact power feeding method.
FIG. 4 is a side view cross-sectional explanatory view of a conventional non-contact power feeding type traveling carriage.
FIG. 5 is a plan view for explaining a state in which a traveling carriage is passing through a curved portion.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 10 Traveling carriage 11 Main body 12 Hollow shaft 14 Traveling rail 20 Bogie 21 Bearing 24 Traveling wheel 26 Guide wheel 30 Guide wire 32 E-shaped iron core 34 Pickup coil

Claims (3)

In a non-contact power supply type traveling vehicle that is fed through a pickup coil by a guide wire that is a reciprocating conductor provided in parallel along a pair of traveling rails, a bogie that is provided so as to be able to turn on the traveling vehicle, Travel wheels disposed on both sides and rolling on the travel rail, guide wheels disposed on the front and rear sides of one side of the bogie and sandwiching one of the travel rails from both sides, and a position below the bogie And a pickup coil wound around an iron core , wherein the bogie is disposed at a front portion and a rear portion of the traveling cart.   2. The non-contact power supply type traveling vehicle according to claim 1, wherein the guide wires are arranged at intervals in the vertical direction. The iron core is an E-shaped iron core around which a pickup coil is wound at a central portion, and a guide wheel. A non-contact power supply type traveling carriage, which is attached to a bogie in a lateral direction in the direction of the side, and each of the guide wires is inserted into an opening portion. 3. The non-contact power feeding traveling vehicle according to claim 1, wherein the traveling rail is disposed so that a traveling rail tread surface of the traveling wheel is positioned higher than the guide line. Type traveling cart.

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