JPH08264357A - Pickup apparatus - Google Patents

Abstract

PURPOSE: To make an entire pickup part less bulky by winding a coil around a wall inside a recess of a magnetic material core having recesses for exhibiting respective power supply lines. CONSTITUTION: A pickup part 24 for constituting respective power receiving parts is provided at a site opposite to power supply lines 12d, 12e of a guide rail 1 in a automobile body frame. The pickup part 24 comprises a pickup coil 24g wound on rear parts 24f, 24h for respectively connecting upper, lower and center protrusions 24b, 24c, 24d of a pickup core 24a having an E-shape cross section made of a magnetic material. Thus a pickup apparatus which has been necessarily forced to be large in size in the prior art in order to make an air gap large between the power supply lines 12d, 12e and the pickup core 24a can be significantly less bulky.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pickup device which has a pickup part which is inductively coupled to a power feed line in a physical non-contact state and which receives power from the power feed line through the pickup part.

[0002]

2. Description of the Related Art Conventionally, various systems have been proposed as a system for supplying electric power from a power feeding section to a power receiving section by physically non-contact inductive coupling (Japanese Patent Publication No. 6-506099, U).
SP4914539, USP4833338, USP3
904954, JP-A-55-119393, JP-A-2-215087, JP-A-5-207606). Among them, for example, the technology disclosed in Japanese Patent Laid-Open No. 5-207606 and Japanese Patent Laid-Open No. 6-506099 is applied to power distribution to a plurality of transport vehicles used in a monorail transport system.

FIG. 6 is a front view showing the relationship between a guide rail and a carrier vehicle traveling along the guide rail in the monorail type carrier system disclosed in the former, and FIG. 7 is provided on the guide rail side which is a power feeding portion. FIG. 2 is a partially enlarged cross-sectional view showing a relationship between a feeding line that is installed and a pickup unit that is mounted on a side of a carrier vehicle that is a power receiving unit, in which 1 is a guide rail and 2 is a guide rail.
Indicates a carrier vehicle.

The guide rail 1 is formed in an I-shape in cross section, and is supported by a support arm 11 mounted along its one side in the longitudinal direction at substantially regular intervals in a state of being suspended from the ceiling of a factory or the like. A guide line 12 is fixed to the other side surface of the guide rail 1 and extends in the longitudinal direction along the guide rail 1. As shown in FIG. 7, the guide line 12 includes supporters 12b and 12c, which are laterally upward and downward from one side surface of the mounting plate 12a with a predetermined space.
Is provided in a protruding manner, and feeders 12d and 12e are fixed to the tips of the respective supporters 12b and 12c.

On the other hand, as shown in FIG. 6, the transport vehicle 2 has a pair of U-shaped body frames 2 which are arranged in front of and in the rear of the traveling direction and are arranged at predetermined intervals to hold the guide rail 1 in a front view.
1 (only one side is shown in FIG. 6) is configured to pass a carrier 23, and a carrier 23 is detachably supported by the carrier 23. On the body frame 21, a drive trolley 21a rollingly contacting the upper end surface of the guide rail 1 is located at a position facing the upper end surface of the guide rail 1, and a pair of driving trolleys rolling at the side surfaces at positions facing both side surfaces of the lower end of the guide rail 1. Steady rest roller 21
b and 21b, respectively, and a pickup unit 24 at a position facing the guide line 12,
1a on the upper end surface of the guide rail 1 and the steady rest roller 2
The guide rails 1b and 21b are mounted on the guide rail 1 in a state in which they are in rolling contact with both side surfaces of the lower end portion of the guide rail 1 and the pickup portion 24 faces the guide line 12.

Above the body frame 21, the drive trolley 21 is provided.
A motor M linked to a is mounted, and the motor M is driven by the electric power supplied through the pickup unit 24, the drive trolley 21a is rotated, and the transport vehicle 2 is caused to travel along the guide rail 1. Has become. As shown in FIG. 7, the pickup section 24 is a pickup core 24a made of ferrite and having a cross section of E shape. The pickup section 24 is picked up at the central projection 24d among the projections 24b, 24c, and 24d provided at the upper, lower, and central portions thereof. The coil 24g is wound around the coil. The upper and lower protrusions 24b and 24c are formed in a strip shape so as to sandwich the central protrusion 24d, respectively. The pickup coil 24g is wound around the central protrusion 24d, and the tip ends thereof are used to prevent the coil from coming off. End plate 24e is provided.

In such a conventional device, a magnetic field is formed around the feeder lines 12d and 12e by energizing them. When the pickup unit 24 is located in this magnetic field, the pickup coil 24 of the pickup core 24a
Each protrusion 24b, 24c, 24d including g and the back 24
A magnetic path is formed in f and 24h, and the pickup coil 24
Electric power is induced in g, and this is supplied to the motor M and the like.

FIG. 8 is a sectional view showing the structure of the guide line 12 and the pickup section 24 disclosed in the above-mentioned Japanese Patent Publication No. 6-506099. In this prior art, of the protrusions 24b, 24c, 24d which are provided to laterally project from one side surface of the pickup core 24a, the central protrusion 24d is separated into the pickup coil 24g and the outer periphery thereof connected to the switching means. The coil 24i is provided. Other configurations are substantially the same as those shown in FIG. 7, and corresponding parts are designated by the same reference numerals.

As a result, when the load of one of the plurality of transport vehicles 2 becomes small, switching means connected to the separation coil 24i is provided so as to prevent the power distribution to the other transport vehicles from being disturbed. Is closed, the guide line 12 and the pickup section 24 can be decoupled.

[0010]

By the way, in the conventional apparatus as described above, the pickup cores 24a in the pickup section 24 are all E-shaped and are picked up around the central protrusion 24d in the pickup core 24a. Since the coil 24g is wound, the outer diameter of the protrusion 24d becomes large, and the power supply lines 12d, 1
2e, pickup core 24a, pickup coil 2
Since it is necessary to maintain an appropriate air gap with 4g, the back portions 24f, 24 connecting the respective protrusions 24b, 24c, 24d.
It is necessary to increase the dimension of h, and there is a problem that the whole is vertically long and bulky and the induction efficiency is low.

The present invention has been made in view of the above circumstances, and an object of the present invention is to wind a pickup coil around the inner back wall of each recess of the pickup core that should face the power supply line. It is an object of the present invention to provide a pickup device that can be made smaller.

[0012]

A pickup device according to the present invention is a pickup device which has a pickup portion inductively coupled to a power source and a power supply line connected to the power source, and receives electric power through the pickup portion. The power feed line is composed of a pair of upper and lower sides, and the pickup portion has an E-shaped cross section, and a coil is wound around the inner back wall of each of the recesses in the core made of a magnetic material having the recesses facing the power feed lines. It is characterized by being equipped with.

[0013]

In the present invention, the coil is wound around the inner back wall of each recess for exposing each power supply line in the pickup core, so that the dimension between the recesses can be shortened and the pickup core can be made small. Can be configured.

[0014]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The present invention will be specifically described below with reference to the drawings showing the embodiments. 1 is a schematic view showing a monorail type transport system to which the present invention is applied, FIG. 2 is an enlarged side view showing the relationship between a guide rail and a guided vehicle, FIG. 3 is an enlarged front view of the same, and FIG. 4 is a feeder line and a pickup. It is an expanded sectional view which shows the inductive coupling structure with a part. In the figure, 1 is a guide rail that constitutes a monorail type transportation system in a factory, 2 is a guided vehicle, and 3 is a system controller. The guide rail 1 is installed so as to form a multiple loop by connecting stations (not shown) corresponding to the purpose of transportation, and a switch rail for selectively using either one at each intersection. A system branch / merge unit 4 is provided.

As shown in FIG. 4, the guide rail 1 has a substantially I-shaped cross section, and a support arm 11 is attached to one side surface of the guide rail 1 at substantially regular intervals in the longitudinal direction. It is installed suspended from the ceiling. On the other side surface of the guide rail 1, a guide line 12 forming a power feeding portion is fixed over the same entire length in the longitudinal direction, and is connected to the primary side power source portion 7 shown in FIG.

The guide line 12 is arranged in a loop shape on one side surface of the mounting plate 12a, extending over the respective tip portions of a pair of supporters 12b, 12c projecting laterally at a predetermined distance in the downward direction. The feeder line 12d is on one side and the feeder line 12e is on the other side. The power supply lines 12d and 12e are configured by coating a stranded wire formed by bundling insulated thin wires with a resin material. On the other hand, as shown in FIGS. 2 and 3, the transport vehicle 2 is constructed by suspending a carrier 23 that is detachably attached to a pair of front and rear body frames 21 and 22 to form a U-shape in a front view. ing.

The vehicle body frame 21 has an upper portion thereof, a drive trolley 21a rollingly contacting the upper surface of the guide rail 1 at a position facing the upper surface of the guide rail 1, and upper and lower portions thereof having the guide rail 1.
A pair of steady rest rollers 21b, 21b, 21c, 21 which are in rolling contact with the upper and lower side surfaces, respectively, at positions facing each other.
c, and the drive trolley 21a is provided at the top.
The motor M linked to is fixed. In addition, the body frame 21
In the portion of the guide rail 1 that faces the power supply lines 12d and 12e, a pickup unit 2 that forms a power receiving unit is provided.
4 are provided.

As shown in FIG. 4, the pickup portion 24 has upper and lower protrusions 24b, 24 of a pickup core 24a made of a magnetic material such as ferrite and formed in an E-shaped cross section.
c, the back portions 24f and 24h for connecting the central protrusions 24d,
In other words, the pickup coil 24g is wound around the inner walls of the recesses facing the power supply lines 12d and 12e. The number of turns, wire diameter, etc. of the pickup coil 24a are set as necessary.

The pickup coil 24g is a guide rail 1.
When the carrier 2 is mounted on the feeders 12d, 12
facing the peripheral surface of e at a predetermined interval,
By energizing 12e, it is positioned in the magnetic field formed around it and the electric power induced in the pickup coil 24g is supplied to the motor M and the like. On the other hand, on the body frame 22, there is a driven trolley 22a that rolls on the upper portion of the body frame 22 facing the upper surface of the guide rail 1, and on the lower portion of the body frame 22 facing the lower both side surfaces of the guide rail 1. Anti-sway rollers 22b, 22b, 2 rolling
2c and 22c are provided.

The system controller 3 is for carrying out the control necessary for the transport vehicle to transport the object G to be transported from one station to another intended station, and issues a work instruction to the transport vehicle 2. In addition, it outputs a control signal for securing a traveling route to the branch / merge controller 5, and gives a work instruction for transferring the transported object G to a station controller (not shown) installed in each station. In addition to performing overall operation of the system and ensuring safety, it also has the function of issuing an alarm when a failure occurs.

The branching / merging controller 5 shown in FIG. 1 is for controlling traffic between the transport vehicles 2, and is installed at a place where traffic control is required, for example, a branching section, a merging section, or the like. Others In FIG. 1, 6 is a repair line, and 7 is a primary side power supply unit. The repair line 6 guides the guide rail 1 through the branching / merging section 4 of the carrier vehicle 2 requiring maintenance and inspection.
This is for guiding from here to maintenance.

FIG. 5 is a block diagram showing a schematic configuration of a power supply / power receiving unit between the guide rail and the carrier vehicle in the monorail type carrier system shown in FIG. The primary power supply unit 7 is installed on the ground together with the system controller 3 and the like,
The induction line 12 includes an AC power supply (fixed high frequency power supply), an impedance converter that converts a constant voltage into a constant current, and the like.
A constant current is supplied to the power supply lines 12d and 12e constituting the.

The pickup unit 24 receives power from the power supply lines 12d and 12e by inductive coupling, supplies power to the motor M and the like through the secondary power supply unit 8, and causes each carrier vehicle 2 to travel. In the embodiment, the pickup coil 24g is wound around the back portions 24f and 24h of the pickup core 24a, but it is needless to say that the separation coil may be wound here as in the case shown in FIG. is there.

[0024]

As described above, according to the present invention, a coil is wound around the inner wall of the recess of the pickup core that faces each power supply line, thereby increasing the air gap between the conventional power supply line and the pickup core. Therefore, it was inevitable to increase the size, but by eliminating this, it is possible to greatly reduce the size, and the air gap becomes smaller, so that the power receiving efficiency is high, and the present invention has excellent effects. Play.

[Brief description of drawings]

FIG. 1 is a schematic diagram of a monorail type transport system to which a pickup device according to the present invention is applied.

FIG. 2 is an enlarged side view showing a relationship between a guide rail and a carrier vehicle.

FIG. 3 is an enlarged front view showing a relationship between a guide rail and a traveling carriage.

FIG. 4 is an enlarged cross-sectional view showing a relationship between a guide rail of a guide rail and a pickup portion of a traveling carriage.

5 is a block diagram showing a schematic configuration of a power supply / power receiving unit between a guide rail and a carrier vehicle in the monorail system carrier system shown in FIG.

FIG. 6 is a front view showing a relationship between a guide rail and a carrier vehicle in a conventional system.

FIG. 7 is a schematic cross-sectional view showing a relationship between a power supply line and a pickup unit in a conventional system.

FIG. 8 is a schematic cross-sectional view showing a relationship between a power supply line and a pickup unit in another conventional system.

[Explanation of symbols]

 1 guide rail 2 carrier vehicle 3 system controller 4 branching / merging section 5 branching / merging controller 6 repair line 11 support arm 12 guide line 12d, 12e power supply line 21, 22 body frame 24 pickup section 24a pickup core 24b, 24c, 24d protrusion Part 24f, 24h Back part 24g Pickup coil

 ─────────────────────────────────────────────────── ─── Continuation of the front page (72) Inventor Yasuo Kawamatsu 4-17-96 Tsurumi, Tsurumi-ku, Osaka-shi, Osaka Prefecture Tsubakimoto Chain Co., Ltd.

Claims (1)

[Claims] 1. A pickup device having a pickup unit inductively coupled to a power source and a power supply line connected to the power source, and receiving electric power through the pickup unit, wherein the power supply line is composed of a pair of upper and lower sides. The section has an E-shaped cross section, and a coil is wound around the inner back wall of each of the recesses in the core made of a magnetic material and having the recesses facing the power supply lines. .