JP2000086182A - Remote control type power supply control device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To input power supply to an upper controller from the lower part of a vehicle without an operator riding on a workbench. SOLUTION: A remote control type power supply control device 19 comprises a control part 21 and an operating part 23. The operating part 23 is provided with a battery 27, a leveling device 33 operated when supplied with the power of the battery 27, and a pressure switch 39 for making or breaking an electric connection between the battery 27 and the leveling device 33. The pressure switch 39 is of the hydraulic actuated type that is actuated in response to a hydraulic force, and the control part 21 is a hydraulic pressure generating switch 25 for generating a hydraulic force when operated. The hydraulic pressure generating switch 25 and the pressure switch 39 are communicated to each other by an oil passage 51 made of an insulating material. When the hydraulic pressure generating switch 25 is pressed, the pressure switch 39 is operated accordingly by the hydraulic force via the oil passage 51 to establish an electric connection between the battery 27 and the leveling device 33 to supply the power of the battery 27 to the leveling device 33.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a remote-operated power supply control device, and more particularly, to a remote-operated power supply control device mounted on a workbench provided at a distal end of a telescopic boom having insulation properties. .

[0002]

2. Description of the Related Art An aerial work vehicle pivotally supports a telescopic boom, which can freely expand and contract, move up and down, on a swivel provided on a vehicle body,
Some telescopic booms are provided with a work table provided at the distal end thereof. Since this aerial work vehicle may be used for aerial work such as construction of power distribution equipment such as electric wires, the telescopic boom to which the work table is attached is made of an insulating material such as FRP, so that the work table Electrical insulation between the vehicle bodies can be achieved, and the construction of the power distribution equipment can be performed safely. In some cases, the workbench is provided with a leveling device that corrects the tilt of the workbench in order to further secure the safety of construction of the power distribution equipment. The operation of the leveling device can be performed by a lower controller provided on the vehicle body.

[0003] Incidentally, there is an electric leveling device, and a controller for controlling the electric leveling device includes an upper controller provided on a workbench in addition to a lower controller provided on a vehicle body.

[0004]

However, since the upper controller uses a battery mounted on the work table as a power supply source, an operator gets on the work table to operate the upper controller and supplies power to the upper controller. Needs to be supplied. For this reason, when the operation of the telescopic boom is controlled by the lower controller without turning on the power of the upper controller, the leveling device does not operate and the work table cannot be maintained in the horizontal direction.

The present invention has been made in view of such a problem, and a power supply of an electric leveling device or the like which can turn on a power supply of an upper controller from a lower part of a vehicle without an operator getting on a work table. It is intended to provide a supply device.

[0006]

In order to solve the above-mentioned problems, a remote-operated power supply control device according to the present invention comprises:
And an actuating part provided electrically separated from the main body. The operating unit includes a power source (for example, the battery 27 in the embodiment), an electric operating device (for example, the leveling device 33 in the embodiment) that operates by receiving power supply from the power source, and electrically connects the power source and the electric operating device. An electric switch (for example, the pressure switch 39 in the embodiment) for connecting or disconnecting is provided, and the electric switch is a hydraulically operated switch that is operated by receiving hydraulic pressure. A hydraulic pressure supply means (for example, a hydraulic pressure generation switch 2 in the embodiment) for supplying a hydraulic pressure is provided in the main body.
5, a switching valve 61 and a hydraulic source 63) are provided, and the hydraulic supply means and the electric switch communicate with each other via an oil passage made of an insulating material.
The hydraulic pressure supplied by the hydraulic supply means is transmitted to the electric switch via the oil passage to operate the electric switch, electrically connecting the power supply and the electric actuator, and the electric power of the power is supplied to the electric actuator. You.

In order to start the electric operating device, the hydraulic pressure supplied by the hydraulic supply means is transmitted to the electric switch via the oil passage to operate the electric switch, and the electric power is electrically connected between the power supply and the electric operating device. To supply power from the power supply to the electric actuator.

[0008] The electric operation device is operated by receiving power supply. For example, an electric leveling device provided on a workbench or an upper portion for controlling operation of an operation target such as a telescopic boom provided on the workbench. A controller and the like can be exemplified. The hydraulic pressure supply means has a function of supplying hydraulic pressure.For example, when all of a cylinder including a rod and a bottom and an outrigger jack are grounded, the hydraulic pressure source connected to the hydraulic pressure source and the hydraulic pressure source are switched. And a switching valve for supplying hydraulic pressure to the electric switch.

Further, a self-holding circuit is electrically provided between the electric actuator and the power supply, and when the hydraulic pressure is supplied by the hydraulic pressure supply means, the self-holding circuit is operated only by temporarily connecting and operating the electric switch. Preferably, it is activated to maintain the electrical connection between the power source and the electrical actuator. When hydraulic pressure is supplied by the hydraulic pressure supply means and the electric switch is temporarily connected and operated, the self-holding circuit is operated and the power supply and the electric actuator are electrically connected. That is, even if the hydraulic pressure supply means does not continuously supply hydraulic pressure, the electric connection between the power supply and the electric actuator can be maintained by the self-holding circuit.
Also, since the operation of the electric switch does not consume power,
Waste of power consumption of the power supply can be prevented.

The main body is provided on the vehicle body side of the aerial work vehicle,
It is preferable that the operating section is attached to the tip of a high-altitude moving means movably provided on the vehicle body, and a part of the high-altitude moving means has an insulating property. When the main body provided on the vehicle body side of the aerial work vehicle operates, the operating part can be operated. That is, to operate the electric actuator attached to the tip of the high-altitude moving means, it is sufficient to operate the hydraulic supply means of the main body provided on the vehicle body side of the high-altitude working vehicle, and It is not necessary to go directly to the tip of the location moving means to directly power on the electric actuator. For this reason, the electric actuator can be remotely controlled from the lower part of the aerial work vehicle.

[0011]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, a preferred embodiment of the present invention will be described with reference to FIGS. This embodiment shows an aspect of an aerial work vehicle having a telescopic boom that can be extended and contracted and turned on a vehicle body. First, before describing the remote-controlled power supply control device of the present invention, an aerial work vehicle equipped with the remote-controlled power supply control device will be described.

As shown in FIG. 1, the aerial work vehicle 1 includes an outrigger jack 5 for supporting the vehicle body 3 at four front, rear, left and right sides of the vehicle body 3, and a hydraulic motor (not shown) on the rear upper portion of the vehicle body 3.
And a swivel 7 that can be swiveled. A base end of a telescopic boom 9 is pivotally supported on an upper portion of the swivel base 7. The telescopic boom 9 is raised and lowered by a telescopic operation of a boom raising and lowering cylinder 11 provided between the swivel 7 and the telescopic boom 9.

A vertical post 13 is provided at the distal end of the telescopic boom 9, and the vertical post 13 is provided with an electric leveling device (not shown). The leveling device has a function of always holding the work table 15 horizontally.
A turning arm 17 is provided on the upper part of the vertical post 13 so as to protrude in the horizontal direction, and is formed so as to be rotatable with respect to the vertical post 13 by a hydraulic motor (not shown). A worktable 15 is provided at the tip of the turning arm 17.

Next, a remote control type power supply control device will be described. As shown in FIG. 2, the remote operation type power supply control device (hereinafter referred to as “power supply control device”) 19 includes an operation unit 2.
1 and an operating part 23. The operation unit 21 has a hydraulic pressure generation switch 25 for generating hydraulic pressure, and the operation unit 23 includes a battery 27, a relay 29, and an upper controller 3.
1, a leveling device 33, a self-holding circuit 35, a diode 37, and a pressure switch 39. Actuator 23
Has a power supply circuit 41 for supplying the power of the battery 27 to the upper controller 31, a relay drive circuit 43 for operating the relay 29, and a connection holding circuit 45 for holding the electrical connection of the switch 29a of the relay 29. ing.
The power supply circuit 41 has a battery 27 in order from the downstream side.
, The switch section 29a of the relay 29 and the upper controller 3
1, the relay driving circuit 43 has a battery 27, a pressure switch 39, a diode 37, and a driving portion 29b of the relay 29 in this order from the downstream side, and the connection holding circuit 45 has a self-holding in that order from the downstream side. Circuit 35 and diode 3
7 and a relay drive unit 29b.

The upper controller 31 is a leveling device 3
The self-holding circuit 35 has a function of maintaining the connection of the contact point of the switch unit 29a of the relay 29 and continuously supplying power to the upper controller 31. A lower controller 47 provided on the vehicle body 3 side is connected to the upper controller 31 via an optical communication cable 49. When the battery 27 is supplied to the upper controller 31, the lower controller 47 is connected to the upper controller 31 via the upper controller 31. The operation of the leveling device 33 can be controlled. The pressure switch 39 has a switch portion 39a for connecting the contact point 57 and a pressing portion 39b for pressing the switch portion 39a.
9b has a function of pressing the switch portion 39a to electrically connect the contacts 57 of the switch portion 39a.

The hydraulic pressure generating switch 25 and the pressure switch 39
Is communicated with an oil passage 51 made of an insulating material. When the hydraulic pressure generation switch 25 is pressed, the oil passage 51
The oil inside is compressed and transmitted to the pressing portion 39b,
The piston 53b extends toward the switch 39a and contacts the connection plate 55 of the switch 39a to move the connection plate 55 toward the contact 57.

Next, a case will be described in which the power supply control device 19 is used to move the work table 15 to a predetermined high position without an operator riding on the work table 15. First, the aerial work vehicle 1 is moved to the work site with the work table 15 stored on the vehicle body 3. Then, the outrigger jack 5 is extended and grounded to stably support the vehicle body 3.

Next, the upper controller 31
The operator presses the hydraulic pressure generation switch 25 to turn on the switch 7. When the hydraulic pressure generation switch 25 is pressed, the oil in the oil passage 51 is compressed and the hydraulic pressure is transmitted to the pressing portion 39b, and the piston 53 of the pressing portion 39b is extended toward the switch portion 39a to connect the switch portion 39a. The connecting plate 55 is in contact with the plate 55 and electrically connects the contact points 57 electrically temporarily.
When the contacts 57 are electrically connected temporarily, the battery 27 and the drive unit 29b of the relay 29 are electrically connected, and the drive unit 29b operates to operate the switch unit 29 of the relay 29.
a is activated, the contacts 57 of the relay 29 are electrically connected, the battery 27 and the upper controller 31 are electrically connected, and the power of the battery 27 is
Supplied to At the same time, the self-holding circuit 35 operates to operate the driving unit 29b of the relay 29,
The electrical connection of the switch unit 29a is maintained, and the power of the battery 27 is continuously supplied to the upper controller 31.

Next, the upper controller 31
When the 7 is inserted, the information is transmitted to the lower controller 47 via the optical communication cable 49, and the lower controller 47 can operate the leveling device 33.
Then, the operator operates the telescopic boom 9 by using the lower controller 47 and operates the leveling device 33 to move the work table 15 to a predetermined high position and maintain the work table 15 in the horizontal direction. I do.

Further, the power supply control device of the present invention may be the one shown in FIG. Only the differences between the power supply control device 59 and the above-described power supply control device 19 will be described, and the same reference numerals will be given to the same aspects, and the description thereof will be omitted.
The power supply control device 59 differs from the power supply control device 19 in that the self-holding circuit 35 and the relay 29 described above are not provided and the function of the pressure switch 39 is different. The pressure switch 39 presses the hydraulic pressure generation switch 25 to operate the piston 53.
When the hydraulic pressure generation switch 39 is pressed once, the piston 53 is maintained in the expanded state, and when the hydraulic pressure generation switch 39 is pressed again, the expanded piston 53 is contracted.

To put the battery 27 into the upper controller 31, the operator presses the hydraulic pressure generation switch 25,
The oil in the oil passage 51 is compressed, and this oil pressure is transmitted to the pressing portion 39b.
And the piston 53 contacts the connection plate 55 of the switch unit 39a, and the switch unit 39a
Are electrically connected. Since the piston 53 remains in the extended state, the contact 57
The upper controller 31 is continuously electrically connected between the
, The power of the battery 27 is continuously supplied.

On the other hand, in order to shut off the supply of the battery 27 to the upper controller 31, the oil pressure in the oil passage 51 is reduced by pressing the oil pressure generation switch 25 again, so that the piston 53 is reduced and the switch portion 39a is operated. Are electrically disconnected between the contacts 57.

Even if an operator does not step on the work table 15 and puts the battery 27 into the upper controller 31, pressing the hydraulic pressure generation switch 25 provided on the vehicle body 3 side allows the upper controller 31 to charge the battery 27. Can be put in. Therefore, the operation of the leveling device 33 can be controlled by supplying the battery 27 to the upper controller 31 from the lower part of the vehicle, and the use of the pressure switch 39 using hydraulic pressure eliminates the need for electric power to operate the switch. Thus, the power consumption of the battery 27 can be saved.

The switch 39a of the pressure switch 39
Is not limited to the above, the connection plate 55 is moved by the pressing of the hydraulic pressure generation switch 25 to maintain the connection between the contacts 57, and the connection between the contacts 57 is released by pressing the connection plate 55 again. Switches or toggle switches combined with springs to provide a snap action for quickly opening and closing between contacts 57 can be used.

Further, instead of the pressure generating switch 25,
As shown in FIG. 4, a switching valve 61 and a hydraulic pressure source 63 may be provided upstream of the oil passage 51. The switching valve 61 is a two-port, two-position switching valve. When the solenoid 65 is excited, the hydraulic source 63 and the oil passage 51 communicate with each other through the switching valve 61, and the hydraulic source 6
3 is supplied into the oil passage 51. Solenoid 6
5 is electrically connected to a lower controller 47. When the lower controller 47 detects that all of the outrigger jacks 5 shown in FIG. ), The lower controller 47 excites the solenoid 65. That is, when it becomes possible to perform work at a high place, the lower controller 47 excites the solenoid 65 of the switching valve 61 to operate the pressure switch 39. Therefore, the pressure switch 39 can be remotely operated without the operator riding on the work table 15 shown in FIG.

[0026]

According to the remote control type power supply control device of the present invention, the hydraulic pressure supplied by the hydraulic supply means is transmitted to the electric switch via the oil passage to operate the electric switch, and the electric operation device is supplied with power. Power is supplied,
The electric actuator can be remotely controlled, and the use of an electric switch using hydraulic pressure eliminates the need for electric power to operate the electric switch, thereby saving battery power consumption.

Further, a self-holding circuit is electrically provided between the electric actuator and the power supply, and the hydraulic switch is supplied with hydraulic pressure by the hydraulic pressure supply means to temporarily connect and operate the electric switch, thereby activating the self-holding circuit. When the electrical connection between the power supply and the electric actuator is maintained, the self-holding circuit maintains the electrical connection between the power supply and the electric actuator without continuously supplying hydraulic pressure by the hydraulic supply means. Can be.

Further, the main body portion is provided on the vehicle body side of the aerial work vehicle, and the operating portion is attached to a distal end portion of the aerial movement means movably provided on the vehicle body, and a part of the aerial movement means is provided. If it has insulation properties, the electric actuator can be remotely controlled from below the aerial work vehicle.

[Brief description of the drawings]

FIG. 1 is a front view of an aerial work vehicle equipped with a remote-controlled power supply control device according to an embodiment of the present invention.

FIG. 2 shows an electric circuit of the remote-controlled power supply control device according to the embodiment of the present invention.

FIG. 3 shows an electric circuit of the remote-controlled power supply control device according to the embodiment of the present invention.

FIG. 4 shows a switching valve connected to the remote-controlled power supply control device according to the embodiment of the present invention.

[Explanation of symbols]

 REFERENCE SIGNS LIST 1 aerial work vehicle 3 body 9 telescopic boom 19 remote-operated power supply control device 21 operation unit 23 operating unit 25 hydraulic pressure generation switch 27 battery 33 leveling device 35 self-holding circuit 39 pressure switch 51 oil passage 61 switching valve

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 3F333 AA09 AB04 BB08 BD02 DA09 FA03 FE03 FE08

Claims (3)

[Claims] 1. An electric operation device comprising: a main body portion; and an operation portion provided apart from the main body portion and electrically insulated, wherein the operation portion is operated by receiving a power supply and a power supply from the power supply. An electrical switch for electrically connecting or disconnecting the power supply and the electrical operating device between the power supply and the electrical operating device, wherein the electrical switch comprises a hydraulically operated switch operated by receiving hydraulic pressure, Is provided with hydraulic pressure supply means for supplying hydraulic pressure, the hydraulic pressure supply means and the electric switch communicate with each other through an oil passage made of an insulating material, and the hydraulic pressure supplied by the hydraulic pressure supply means passes through the oil passage. The remote controller transmits the electric switch to operate the electric switch to electrically connect the power supply and the electric actuator, and the electric power of the power supply is supplied to the electric actuator. Remote control power supply. 2. A self-holding circuit is electrically provided between the electric actuator and the power supply, and when the hydraulic pressure is supplied by the hydraulic pressure supply means, the electric switch is only temporarily connected and activated. 2. The remote-operated power supply control device according to claim 1, wherein the self-holding circuit operates to maintain the electrical connection between the power supply and the electric actuator. 3. The apparatus according to claim 1, wherein the main body is provided on a vehicle body side of the aerial work vehicle, and the operating portion is attached to a distal end of a height moving means movably provided on the vehicle body. 3. The remote-controlled power supply control device according to claim 1, wherein a part of the moving means has an insulating property.