JP2011047158A - Gondola for work - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a gondola for work allowing a worker to perform maintenance safely in a short time without causing incomplete contact and making it dirty during power supply from a feeder system on a building side to a moving device on a gondola body side and perform the work for cleaning for many hours. <P>SOLUTION: This gondola 200 for work includes a gondola body 201, the moving device 202 for moving the gondola body 201 in the horizontal direction and the vertical direction, and the feeder system 212 for feeding power into the moving device 202. The feeder system 212 has a feeder 100 in which high frequency current flows and a pick-up part 1 being inductive-coupled with the feeder 100. The gondola body 201 is moved by feeding induced electromotive force induced by the pick-up part 1 into the moving device 202. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a work gondola used when performing maintenance of a wall surface of a building such as a building or cleaning work of a window glass.

  The work gondola is mainly composed of a gondola body on which a person can get on and clean windows and the like, and a moving mechanism that moves the gondola body up and down and left and right. As a moving mechanism for moving the gondola body up and down, left and right, for example, in the working gondola disclosed in Patent Document 1, the left and right electric winches installed on both side surfaces near the lower portion of the gondola body and the upper part of the gondola body rotate. Crossing from a rope guide piece having guide rollers attached to the left and right, left and right guide rollers attached to both side surfaces near the top of the gondola body, and the left and right guide rollers wound around the left and right electric winches In this way, the left and right ropes are attached to the left and right gondola support arms that are installed near the upper ends of the building via the guide rollers.

Japanese Utility Model Publication No. 6-032579

  However, in the above-described conventional work gondola, power is supplied to the left and right electric winches (hereinafter referred to as “moving device”) using the power supply cord, so that the power supply cord suspends the gondola body. There is a problem of being easily entangled with the left and right ropes. Although it is possible to keep the power supply cord from getting tangled in the left and right ropes by adjusting the length of the power supply cord along with the movement of the gondola body, work that is not related to the original cleaning work is added. Therefore, work efficiency cannot be denied.

In addition, there is a power supply device installed on the roof of a building that supplies power to the moving device of the gondola body by a contact method, but this contact method has the following problems.
1) Dirt due to abrasion powder 2) Incomplete contact due to separation line 3) Waste of time in maintenance

  In the case of 2), an insulated trolley wire is provided on the building side, and a current collector for the insulated trolley wire is provided on the gondola body side. However, since it is in a contact state, there may be a separation line that is separated by vibration or the like. In the case of 3), the inspection and repair of the contact state between the insulated trolley wire on the building side and the current collector for the insulated trolley wire on the gondola main body is a high place work, and thus requires a lot of time. Moreover, it is dangerous because it is a work at high altitude.

  Further, in the conventional work gondola, although a power source for operating the mobile device can be obtained, a power source for using the electrical device for cleaning work cannot be obtained. Although it is used, there is a problem that the rechargeable type cannot work for a long time and the work efficiency is poor.

  The present invention has been made in view of the above circumstances, and performs maintenance safely and in a short time without causing dirt or incomplete contact in power feeding from the power feeding device on the building side to the moving device on the gondola main body side. An object of the present invention is to provide a working gondola that can perform cleaning and other work for a long time.

  The working gondola of the present invention is a working gondola comprising a gondola body, a moving device that moves the gondola body, and a first power feeding device that feeds power to the moving device, the first power feeding. The apparatus includes a first feeder line through which a high-frequency current flows, and a first pickup unit inductively coupled to the first feeder line, and the movement is performed by an induced electromotive force induced in the first pickup unit. By supplying power to the apparatus, the gondola body is moved.

  According to the above configuration, since the power supply from the first power supply device to the mobile device is performed in a non-contact manner, dirt caused by abrasion powder generated by the contact method in which the insulation trolley wire and the current collector for the insulation trolley wire are brought into contact with each other or due to disconnection are eliminated. Complete contact does not occur. Further, work such as maintenance is facilitated, safety can be ensured and work time can be shortened.

  In the above configuration, the moving device moves the gondola body in at least one of a horizontal direction and a vertical direction.

  According to the said structure, a gondola main body can be freely moved to any direction of up-down and left-right.

  In the above configuration, the first pickup unit includes a cylindrical core that surrounds the circumferential direction of the first power supply line, and a coil that is formed by winding a winding around the core. An opening groove through which the first power supply line can pass in the radial direction is provided along the axial direction of the first power supply line, and at least one of the inner peripheral surface and the outer peripheral surface is formed of a curved surface.

  According to the said structure, since at least one of the internal peripheral surface or outer peripheral surface of a cylindrical core was comprised by the curved surface, the leakage of the magnetic flux from a core can be decreased.

  In the above configuration, the core has both an inner peripheral surface and an outer peripheral surface formed of curved surfaces, and a cross-sectional shape intersecting the axial direction is formed in a substantially C shape.

  According to the above configuration, leakage of magnetic flux from the core can be further reduced.

  The said structure WHEREIN: The both ends of the said core which oppose on both sides of the said opening groove | channel are formed so that the area of the cross section along an axial direction may be larger than the site | part except the said both ends of the said core.

  According to the said structure, the magnetic resistance in the both ends of a core can be reduced relatively, and the magnetic flux which leaks out of an opening groove | channel can be reduced.

  The said structure WHEREIN: The said coil has the coil | winding wound by single layer with respect to the said core.

  According to the said structure, the high frequency resistance of a coil can be reduced compared with the case where a coil | winding is made into multilayer winding.

  The said structure WHEREIN: The said 1st pick-up part has a magnetic shield body surrounding the outer side of the said core.

  According to the above configuration, it is possible to reduce the loss by suppressing the influence of the external magnetic field on the core and the coil.

  In the above-described configuration, an electrical outlet to which an electrical device is connected, and a second power feeding device that feeds power to the outlet are provided, and the second power feeding device includes a second power feeding line through which a high-frequency current flows; And a second pickup section that is inductively coupled to the two feeder lines, and supplies power to the outlet by an induced electromotive force induced in the second pickup section.

  According to the above configuration, since the power supply from the second power supply device to the outlet is performed in a non-contact manner, a power source for using electrical equipment for work (for cleaning work) can be obtained, and a long time Work becomes possible, and work efficiency can be improved.

  The present invention allows maintenance to be performed safely and in a short time without causing dirt or incomplete contact in the power feeding from the power feeding device on the building side to the moving device on the gondola main body side. Etc.) can be performed for a long time.

It is a figure which shows the state which laid the work gondola which concerns on Embodiment 1 of this invention in the building. It is a front view which shows the work gondola of FIG. It is a side view which shows the electric pulley and rail of the work gondola of FIG. It is the figure which expanded the part enclosed by A of FIG. It is a figure which shows the electric power feeder of the work gondola of FIG. 1, (a) is a schematic structure figure of the whole, (b) is sectional drawing of an electric power feeding line. It is sectional drawing of the modification of a feeder. It is a figure which shows the pick-up part of the electric power feeder of the working gondola of FIG. 1, (a) is sectional drawing of the pick-up part which a part was abbreviate | omitted, (b) is explanatory drawing of the magnetic flux which passes the inside of the core in a pick-up part, (c) is explanatory drawing of the magnetic flux which passes the inside of this core in the case of a core with a substantially U-shaped cross section. It is a figure which shows the variation of the core in the pick-up part of the electric power feeding apparatus of the work gondola of FIG. 1, (a) is the figure which comprised only the outer peripheral surface with the curved surface, (b) is the figure which comprised only the inner peripheral surface with the curved surface. It is. It is a front view which shows the work gondola which concerns on Embodiment 2 of this invention.

  DESCRIPTION OF EXEMPLARY EMBODIMENTS Hereinafter, preferred embodiments for carrying out the invention will be described in detail with reference to the drawings.

(Embodiment 1)
FIG. 1 is a view showing a state in which a working gondola according to Embodiment 1 of the present invention is laid on a building 300, and FIG. 2 is a front view showing the working gondola. As shown in FIGS. 1 and 2, the working gondola 200 according to the present embodiment is used for a gondola main body 201, a moving device 202 that moves the gondola main body 201 up and down, left and right, and a movement of the moving device 202 in the horizontal direction. Rail 203, a support member 235 that is fixed to the building 300 and supports the rail 203 and a power supply line 100 described later, and a power supply device (first power supply device) 212 that supplies power to the moving device 202.

  As shown in FIG. 2, the moving device 202 includes electric pulleys 205A and 205B for moving the gondola body 201 in the horizontal direction and a connecting member 206 for connecting the electric pulleys 205A and 205B. The electric pulleys 205A and 205B incorporate electric winches 205A1 and 205B1 for moving the gondola main body 201 in the vertical direction. Connected to. The electric pulleys 205A and 205B operate synchronously, and the gondola body 201 can be moved in the vertical direction while keeping the gondola body 201 in a horizontal state.

  FIG. 3 is a side view showing the electric pulley 205 </ b> A and the rail 203. The rail 203 is formed in a substantially L shape, and a tip portion 2031 on the side not in contact with the building 300 protrudes in the vertical direction. A roller 210 disposed in the horizontal direction is rotatably attached to the tip portion 2031. The electric pulley 205A includes a roller 215 arranged in the horizontal direction, a roller 216 arranged in the vertical direction, a DC motor 217 for driving the roller 216 arranged in the vertical direction, and a reel 218 that houses the wire 207A. A DC motor 219 that drives the reel 218 to feed and wind the wire 207A, and an AC / DC converter (AC / DC converter) 220 that converts a high-frequency AC voltage from the power supply device 212 into a DC voltage. ing. The reel 218 and the DC motor 219 constitute an electric winch 205A1.

  The roller 215 is in contact with the side surface of the rail 203, and the roller 216 is in contact with the bottom surface, so that the moving device 202 can move smoothly together with the roller 210 on the rail 203 side. The DC voltage from the AC / DC converter 220 is used to drive the DC motors 217 and 219.

  The electric pulley 205B has the same configuration as the electric pulley 205A, but the electric pulley 205B does not necessarily require a motor (corresponding to the DC motor 217) for moving the pulley body.

  As shown in FIG. 5A, the power supply device 212 includes a power supply line (first power supply line) 100 installed in a loop shape, a high-frequency power source 110 that causes a high-frequency current to flow through the power supply line 100, and the power supply line 100 and induction. A pickup unit (first pickup unit) 1 to be coupled is provided, and power is supplied from the pickup unit 1 to the moving device 202. That is, an induced electromotive force is induced in the pickup unit 1 by causing a high-frequency current to flow through the feeder line 100. The moving device 202 is fed by the induced electromotive force, and the moving device 202 moves in the horizontal direction, and the wire 207A. 207B is sent out and wound up. The movement of the moving device 202 in the horizontal direction and the feeding and winding of the wires 207A and 207B are performed by an operator operating a hand switch (not shown). That is, when an operation of moving the moving device 202 in the horizontal direction with the hand switch is performed, power is supplied to the DC motor 217 and the moving device 202 moves in the horizontal direction. In this case, the moving device 202 moves to the right side in the horizontal direction or the left side in the horizontal direction due to the difference in the rotation direction of the DC motor 217. That is, when an operation to move the horizontal direction right side with the hand switch is performed, the moving device 202 moves to the right side in the horizontal direction, and when an operation to move the left side in the horizontal direction with the hand switch is performed, the moving device 202 moves to the left side in the horizontal direction. Move to.

  In addition, when an operation for lowering the gondola main body 201 with the hand switch is performed, power is supplied to the DC motor 219, the wire 207A is sent out from the reel 218, and the gondola main body 201 is lowered. In addition, when an operation for raising the gondola body 201 with the hand switch is performed, power is supplied to the DC motor 219 (power is supplied with a polarity that rotates in the direction opposite to the rotation direction when the motor is lowered) by the reel 218. The wire 207A is wound up and the gondola body 201 is raised. As described above, the moving device 202 can freely move the gondola body 201 in both the horizontal direction and the vertical direction.

  The pickup unit 1 constituting the power feeding device 212 is provided on the electric pulley 205A side of the moving device 202, and the power feeding line 100 and the high frequency power source 110 constituting the power feeding device 212 are provided on the building 300 side. As shown in FIG. 3 or FIG. 4, the power supply line 100 is supported obliquely by an L-shaped support member 223. 4 is an enlarged view of a portion surrounded by A in FIG.

  As shown in FIG. 5B, the power supply line 100 includes a cylindrical inner tube portion 101, a cylindrical outer tube portion 102 disposed outside the inner tube portion 101, an inner tube portion 101, and an outer tube portion. The connecting part 103 that connects the two parts 102 so as to be concentric with each other is formed by coating a conductor integrally formed by bending a metal plate with an insulator 104 made of a synthetic resin molded product having a rectangular tube shape. ing. That is, in the power supply line through which high-frequency current flows, there is resistance (high-frequency resistance) due to the skin effect and proximity effect in addition to the electrical resistance of the conductor material (metal plate), but the double tube shown in FIG. If a conductor having a structure is used for the feeder line 100, high-frequency resistance can be reduced and loss can be reduced as compared with a cylindrical conductor.

  The power supply line is not necessarily limited to this structure, and the manufacturing method is not only bending, but also extrusion molding of metal or press fitting of the inner tube portion 101 having the connecting portion 103 into the outer tube portion 102. It can also be manufactured by a method such as As an example, FIG. 6 shows a modification. This power supply line connects the cylindrical inner tube portion 101, the cylindrical outer tube portion 102 disposed outside the inner tube portion 101, and the inner tube portion 101 and the outer tube portion 102 so as to be concentric with each other. The four conductors 103 are covered with an insulator 104 made of a square tube-shaped synthetic resin molded product.

  As shown in FIG. 7A, the pickup unit 1 includes a core 2, a coil 3, a bobbin 4, a magnetic shield body 5, and a power receiving circuit unit 6 (FIG. 5A). . The power receiving circuit unit 6 includes a capacitor that forms a resonance circuit together with the coil 3, a constant voltage circuit that makes the resonance voltage output from the resonance circuit of the coil 3 and the capacitor constant, and the like.

  As shown in FIG. 7A, the core 2 has both an inner peripheral surface and an outer peripheral surface formed of curved surfaces (cylindrical surfaces), and has a substantially C-shaped cross section that intersects the axial direction (direction perpendicular to the paper surface). Is formed. Here, the end portion 20 of the core 2 facing the opening groove 2a is a cross section along the axial direction from a portion (hereinafter referred to as a “body portion”) 21 excluding the end portion 20 of the core 2. The area is formed large.

  The bobbin 4 is formed of a rectangular tube-shaped synthetic resin molded product that is curved in an arc shape, and outer casings 40 are provided at both ends in the axial direction. The core 2 is divided into two body parts 21 at the opposite side of the opening groove 2a, and the end parts of the body part 21 are joined to each other after the bobbin 4 is extrapolated to each body part 21. Thus, the core 2 shown in FIG. Here, the core 2 has a two-divided structure, but may not be divided.

  The coil 3 is formed by winding a winding having an insulating coating around the bobbin 4 in a single layer. The step between the end 20 of the core 2 and the body 21 is set larger than the diameter of the winding so that the coil 3 does not protrude beyond the end 20 of the core 2. Thus, since the coil 3 does not protrude outside the end portion 20 of the core 2, magnetic flux leaking from the end portion of the coil 3 to the outside of the end portion 20 of the core 2 can be reduced.

  The magnetic shield body 5 is formed in a substantially cylindrical shape by a metal magnetic material having a high magnetic permeability, and is extrapolated to the core 2 and the coil 3. However, the magnetic shield body 5 is provided with a groove 5a communicating with the opening groove 2a of the core 2 along the axial direction. The magnetic shield 5 is not essential and may be omitted.

  Thus, when a high frequency current flows through the opening groove 2a to the power supply line 100 disposed inside the core 2, a high frequency magnetic field (magnetic flux φ) is generated on a concentric circle centering on the power supply line 100, and the magnetic flux φ Most passes through the core 2 along the circumferential direction. At this time, as shown in FIG. 7C, in the case of the core 2 ′ having a substantially U-shaped cross section, a part of the magnetic flux φ leaks out of the core 2 ′ at the boundary portion (corner portion) between the plane and the plane. However, since the core 2 in the present embodiment has both an inner peripheral surface and an outer peripheral surface formed of curved surfaces, and the cross-sectional shape intersecting the axial direction is formed in a substantially C shape, FIG. As shown in FIG. 4, there is almost no magnetic flux φ leaking to the outside from the portion other than the opening groove 2a.

  Therefore, compared with the core 2 ′ shown in FIG. 7C, the efficiency of power transmission from the power supply line 100 to the pickup unit 1 can be improved and the power supply amount can be increased. In the present embodiment, both the inner peripheral surface and the outer peripheral surface of the core 2 are configured by curved surfaces. For example, only the outer peripheral surface may be configured by curved surfaces as shown in FIG. Alternatively, as shown in FIG. 8B, only the inner peripheral surface may be formed of a curved surface, and the inner peripheral surface and the outer peripheral surface have a plurality of planes in any of these shapes of the core 2. Compared with the core 2 ′ configured to be abutted against each other, it is possible to reduce the magnetic flux φ leaked to the outside from a portion other than the opening groove 2a. However, it is clear that the power transmission efficiency of the core 2 of the present embodiment is the highest with respect to these two types of cores 2.

  By the way, in the case where one of the two feed lines 100 going back and forth to the high frequency power supply 110 is arranged inside the core 2 and the other feed line 100 is arranged in the vicinity of the pickup unit 1. The magnetic flux generated around the other power supply line 100 cancels out with the magnetic flux φ passing through the core 2, and as a result, the power transmission efficiency of the pickup unit 1 may be reduced. On the other hand, in the present embodiment, since the core 2 and the coil 3 are covered with the magnetic shield body 5 and magnetically shielded, the magnetic flux φ passing through the core 2 as described above is an external magnetic field (magnetic flux). Can be prevented, and as a result, loss can be reduced.

  Further, in the present embodiment, the opening groove 2a is provided in the core 2 of the pickup unit 1 so that it can be easily attached to and detached from the power supply line 100. However, the portion (gap) of the opening groove 2a is magnetic. The magnetoresistance of the circuit will be greatly increased. Therefore, in the present embodiment, both end portions 20 of the core 2 facing each other across the opening groove 2a are formed to have a larger cross-sectional area along the axial direction than the body portion 21 excluding the both end portions 20 of the core 2. Thus, the magnetic resistance at both end portions 20 of the core 2 is relatively reduced as compared with the body portion 21, and the magnetic flux leaking out of the core 2 from the opening groove 2a is reduced.

  Furthermore, when a coil is formed by winding multiple windings, the high frequency resistance of the winding may increase due to the proximity effect, which may reduce the efficiency of power transmission. Therefore, in the present embodiment, the coil 3 is formed by winding the winding around the core 2 in a single layer, thereby reducing the high-frequency resistance of the coil 3 as compared with the case where the winding is wound in multiple layers. The efficiency of power transmission can be improved.

  As described above, according to the working gondola 200 of the present embodiment, the gondola main body 201, the moving device 202 that can move the gondola main body 201 in the horizontal direction and the vertical direction, and the power to the moving device 202 are supplied. The power supply device 212 includes a power supply line 100 through which a high-frequency current flows, and a pickup unit 1 that is inductively coupled to the power supply line 100, and the mobile device is driven by an induced electromotive force induced in the pickup unit 1. By supplying power to 202, the gondola body 201 is moved.

  Therefore, since the power supply from the power supply device 212 to the moving device 202 is performed in a non-contact manner, contamination due to abrasion powder generated by the contact method in which the insulation trolley wire and the current collector for the insulation trolley wire are brought into contact or incomplete contact due to disconnection occurs. There is no. Further, work such as maintenance is facilitated, safety can be ensured and work time can be shortened.

(Embodiment 2)
FIG. 9 is a front view showing a working gondola according to Embodiment 2 of the present invention. In this figure, parts common to those in FIG. 2 described above are denoted by the same reference numerals and description thereof is omitted.

  The work gondola 200B of the present embodiment has the same configuration as the work gondola 200 of the first embodiment described above, and an outlet 225 to which electrical devices for work (for cleaning the window 301) can be connected, A power supply device (second power supply device) 212B that supplies power to the outlet 225, a power supply cord 226 that connects the power supply device 212B and the outlet 225, and a reel 227 that stores the power supply cord 226 are provided. Similarly to the power supply device 212 described above, the power supply device 212B includes a power supply line (second power supply line) 100B installed in a loop shape, a high-frequency power source 110B that causes a high-frequency current to flow through the power supply line 100B, and a power supply line 100B and induction. A pickup unit (second pickup unit) 1B to be coupled is provided, and power is supplied to the outlet 225 from the pickup unit 1B.

  The reel 227 operates in conjunction with the reel 218 of the electric winch 205A1, and when the wire 207A is pulled out from the reel 218, the power supply cord 226 is pulled out from the reel 227 by an equivalent length. On the other hand, when the wire 207A is rewound onto the reel 218, the power supply cord 226 is rewound onto the reel 227 by an equivalent length. Thus, since the power supply cord 226 has the same length as the wire 207A, there is no possibility that the power supply cord 226 is entangled with the wire 207A.

  Since a high-frequency AC voltage is output from the power feeding device 212B, an AC / DC converter (AC / DC converter) that converts this to a DC voltage may be added.

  As described above, according to the working gondola 200B of the present embodiment, power is supplied from the power feeding device 212B to the outlet 225 in a non-contact manner, so that the electrical equipment for work (for cleaning the window 301) can be used. A power source for use can be obtained, work can be performed for a long time, and work efficiency can be improved.

DESCRIPTION OF SYMBOLS 1, 1B Pickup part 2 Core 2a Opening groove 3 Coil 4 Bobbin 5 Magnetic shield body 5a Groove 6 Power receiving circuit part 20 End part 21 Body part 40 Outer part 100, 100B Feed line 101 Inner pipe part 102 Outer pipe part 103 Connection part 104 Insulator 110, 110B High frequency power supply 200, 200B Work gondola 201 Gondola main body 202 Moving device 203 Rail 205A, 205B Electric pulley 205A1, 205B1 Electric winch 206 Connecting member 207A, 207B Wire 212, 212B Power supply device 210, 215, 216 Roller 217 219 DC motor 218, 227 Reel 220 AC / DC converter 223, 235 Support member 225 Outlet 226 Power supply cord 300 Building

Claims (8)

With a gondola body,
A moving device for moving the gondola body;
A working gondola comprising a first power feeding device for feeding power to the mobile device,
The first power supply device includes:
A first feeder line through which a high-frequency current flows;
A first pickup unit that is inductively coupled to the first power supply line;
A working gondola in which the gondola body is moved by supplying power to the moving device by induced electromotive force induced in the first pickup unit. A working gondola according to claim 1,
The moving device is a working gondola that moves the gondola body in at least one of a horizontal direction and a vertical direction. A working gondola according to claim 1 or 2,
The first pickup unit is
A cylindrical core that surrounds the circumferential direction of the first power supply line;
A coil formed by winding a winding around the core;
In the core, an opening groove through which the first power supply line can pass in a radial direction is provided along the axial direction of the first power supply line, and at least one of an inner peripheral surface or an outer peripheral surface is configured by a curved surface. Working gondola. A working gondola according to claim 3,
The core is a working gondola in which both an inner peripheral surface and an outer peripheral surface are formed of curved surfaces, and a cross-sectional shape intersecting the axial direction is formed in a substantially C shape. A working gondola according to claim 3 or 4,
A working gondola in which both end portions of the core facing each other with the opening groove are formed to have a larger cross-sectional area along the axial direction than portions excluding the both end portions of the core. A working gondola according to any one of claims 3 to 5,
The coil is a working gondola having a single-layer winding around the core. A working gondola according to any one of claims 3 to 6,
The first pickup unit is a working gondola having a magnetic shield body that surrounds the outside of the core. A working gondola according to any one of claims 1 to 7,
An electrical outlet to which electrical equipment is connected;
A second power supply device for supplying power to the outlet,
The second power supply device
A second feeder line through which high-frequency current flows;
A second pickup unit that is inductively coupled to the second feeder line;
A working gondola that supplies power to the outlet by an induced electromotive force induced in the second pickup unit.

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